Performance information

• Study on the Effects of Tar Reforming and Steam Gasification of Keyaki Bark in Saitama Prefecture　　　　　　　　　　　　　　　
  Shangrong Wu; Qingyue Wang; Isobe Ryota
  Sustainability, Mar. 2025
  Scientific journal
  DOI：https://doi.org/10.3390/su17052215
  DOI ID：10.3390/su17052215, ORCID：179347534
• Assessment of Health Risks from Agricultural Soils Contaminated with Polycyclic Aromatic Hydrocarbons (PAHs) Across Different Land-Use Categories of Bangladesh　　　　　　　　　　　　　　　
  Sumaya Sharmin; Qingyue Wang; Md. Rezwanul Islam; Weiqian Wang; Yanyan Wang; Christian Ebere Enyoh; Md. Sohel Rana
  Applied Sciences, Dec. 2024
  Scientific journal
  DOI：https://doi.org/10.3390/app15010056
  DOI ID：10.3390/app15010056, ORCID：174477235
• A Special Hydrated Iron Oxyhydroxide for Catalyzing Persulfate to Control Chemical Wastewater Containing Fluoranthene, Phenanthrene, and Pyrene　　　　　　　　　　　　　　　
  Yanyan Wang; Weiqian Wang; Fenwu Liu; Qingyue Wang; Shangrong Wu
  Water, Dec. 2024
  Scientific journal
  DOI：https://doi.org/10.3390/w16233536
  DOI ID：10.3390/w16233536, ORCID：173403794
• Adsorption of Ibuprofen from Water Using Banana Peel Biochar: Experimental Investigation and Machine Learning Algorithms　　　　　　　　　　　　　　　
  Md. Rezwanul Islam; Qingyue Wang; Sumaya Sharmin; Christian Ebere Enyoh
  Water, Dec. 2024
  Scientific journal
  DOI：https://doi.org/10.3390/w16233469
  DOI ID：10.3390/w16233469, ORCID：172942744
• Thermoanalytical and Kinetic Studies for the Thermal Stability of Emerging Pharmaceutical Pollutants Under Different Heating Rates　　　　　　　　　　　　　　　
  Christian Ebere Enyoh; Tochukwu Oluwatosin Maduka; Miho Suzuki; Senlin Lu; Qingyue Wang
  Journal of Xenobiotics, Nov. 2024
  Scientific journal
  DOI：https://doi.org/10.3390/jox14040095
  DOI ID：10.3390/jox14040095, ORCID：171737857
• Synthesis and Characterization of Bio-Based Polyurea Derived from Liquefied Wood of Wooden Musical Instrument Offcuts　　　　　　　　　　　　　　　
  Go Masuda; Christian Ebere Enyoh; Weiqian Wang; Miho Suzuki; Yu Honda; Qingyue Wang
  Macromol, Oct. 2024
  Scientific journal
  DOI：https://doi.org/10.3390/macromol4040044
  DOI ID：10.3390/macromol4040044, ORCID：169779698
• Processes of Metal Oxides Catalyst on Conversion of Spent Coffee Grounds into Rich-Synthesis Gas by Gasification　　　　　　　　　　　　　　　
  Shangrong Wu; Qingyue Wang; Weiqian Wang; Yanyan Wang
  Processes, Oct. 2024
  Scientific journal
  DOI：https://doi.org/10.3390/pr12102232
  DOI ID：10.3390/pr12102232, ORCID：169529941
• Mathematical modeling of cations from non-edible food waste for the reclamation of sodic and saline soils　　　　　　　　　　　　　　　
  Md. Rezwanul Islam; Qingyue Wang; Sumaya Sharmin; Weiqian Wang; Christian Ebere Enyoh
  EURASIAN JOURNAL OF SOIL SCIENCE (EJSS), Oct. 2024
  Scientific journal
  DOI：https://doi.org/10.18393/ejss.1565860
  DOI ID：10.18393/ejss.1565860, ORCID：174488736
• Sources, Distribution, and Health Implications of Heavy Metals in Street Dust across Industrial, Capital City, and Peri-Urban Areas of Bangladesh　　　　　　　　　　　　　　　
  Md. Sohel Rana; Qingyue Wang; Weiqian Wang; Christian Ebere Enyoh; Md. Rezwanul Islam; Yugo Isobe; Md Humayun Kabir
  Atmosphere, Sep. 2024
  Scientific journal
  DOI：https://doi.org/10.3390/atmos15091088
  DOI ID：10.3390/atmos15091088, ORCID：167094289
• Chemicals from Brominated Flame Retardants: Analytical Methods, Occurrence, Transport and Risks　　　　　　　　　　　　　　　
  Christian Ebere Enyoh; Tochukwu Oluwatosin Maduka; Md. Sohel Rana; Sochi Chinaemerem Osigwe; Stanley Chukwuemeka Ihenetu; Qingyue Wang
  Applied Sciences, Sep. 2024
  Scientific journal
  DOI：https://doi.org/10.3390/app14177892
  DOI ID：10.3390/app14177892, ORCID：166860649
• Characterization of Waste Biomass Fuel Prepared from Coffee and Tea Production: Its Properties, Combustion, and Emissions　　　　　　　　　　　　　　　
  Shangrong Wu; Qingyue Wang; Weiqian Wang; Yanyan Wang; Dawei Lu
  Sustainability, Aug. 2024
  Scientific journal
  DOI：https://doi.org/10.3390/su16177246
  DOI ID：10.3390/su16177246, ORCID：166194954
• Study on Fast Liquefaction and Characterization of Produced Polyurethane Foam Materials from Moso Bamboo　　　　　　　　　　　　　　　
  Go Masuda; Satoshi Akuta; Weiqian Wang; Miho Suzuki; Yu Honda; Qingyue Wang
  Materials, Jul. 2024
  Scientific journal
  DOI：https://doi.org/10.3390/ma17153751
  DOI ID：10.3390/ma17153751, ORCID：164519101
• Microplastic Contamination of Non-Mulched Agricultural Soils in Bangladesh: Detection, Characterization, Source Apportionment and Probabilistic Health Risk Assessment　　　　　　　　　　　　　　　
  Sumaya Sharmin; Qingyue Wang; Md. Rezwanul Islam; Weiqian Wang; Christian Ebere Enyoh
  Journal of Xenobiotics, Jun. 2024
  Scientific journal
  DOI：https://doi.org/10.3390/jox14020046
  DOI ID：10.3390/jox14020046, ORCID：162087767
• Characterization of Microplastics and Adsorbed/Dissolved Polycyclic Aromatic Hydrocarbons in the Biggest River System in Saitama and Tokyo, Japan　　　　　　　　　　　　　　　
  Qingyue Wang; Yojiro Yamada; Christian Ebere Enyoh; Weiqian Wang; Kenshi Sankoda
  Nanomaterials, Jun. 2024
  Scientific journal
  DOI：https://doi.org/10.3390/nano14121030
  DOI ID：10.3390/nano14121030, ORCID：161610290
• Characterization of Microbials in the Lung Induced by Allergenic Platanus Pollen Protein (Pla a3) and Ambient Fine Particulate Matter　　　　　　　　　　　　　　　
  Jin Liu; Senlin Lu; Guoqing Hou; Wenwen Hu; Jiumei Zhao; Wei Zhang; Xinchun Liu; Enyoh Christian Ebere; Weiqian Wang; Qingyue Wang
  Atmosphere, Apr. 2024
  Scientific journal
  DOI：https://doi.org/10.3390/atmos15040503
  DOI ID：10.3390/atmos15040503, ORCID：158008620
• Modeling of multicomponent adsorption equilibria of phenol and ciprofloxacin on pristine, acid-modified and thermo-oxidatively-aged polyethylene terephthalate microplastics　　　　　　　　　　　　　　　
  Christian Ebere Enyoh; Wang Qingyue
  Cambridge Prisms: Plastics, 2024
  Scientific journal
  DOI：https://doi.org/10.1017/plc.2024.23
  DOI ID：10.1017/plc.2024.23, ORCID：169066346
• The Plastic Within: Microplastics Invading Human Organs and Bodily Fluids Systems　　　　　　　　　　　　　　　
  Christian Ebere Enyoh; Arti Devi; Hirofumi Kadono; Qingyue Wang; Mominul Haque Rabin
  Environments, Nov. 2023
  Scientific journal
  DOI：https://doi.org/10.3390/environments10110194
  DOI ID：10.3390/environments10110194, ORCID：146511111
• Physicochemical Characterization and Oxidative Potential of Iron-Containing Particles Emitted from Xuanwei Coal Combustion
  Senlin Lu; Jin Liu; Guoqing Hou; Jiumei Zhao; Liu Xinchun; Tingting Xie; KAI XIAO; Shinichi Yonemochi; Enyoh Christian Ebere; Weiqian Wang; Atmospheric Environment
  Toxics, Nov. 2023
  Scientific journal
  DOI：https://doi.org/10.3390/toxics11110921
  DOI ID：10.3390/toxics11110921, ORCID：146736221
• Evaluation of Polyurethane Foam Derived from the Liquefied Driftwood Approaching for Untapped Biomass　　　　　　　　　　　　　　　
  Go Masuda; Ayana Nagao; Weiqian Wang; Qingyue Wang
  Processes, Oct. 2023
  Scientific journal
  DOI：https://doi.org/10.3390/pr11102929
  DOI ID：10.3390/pr11102929, ORCID：143989809
• Investigation of Pyrolysis/Gasification Process Conditions and Syngas Production with Metal Catalysts Using Waste Bamboo Biomass: Effects and Insights
  Yue Guo; Atmospheric Environment
  Sustainability, Oct. 2023
  Scientific journal
  DOI：https://doi.org/10.3390/su151914588
  DOI ID：10.3390/su151914588, ORCID：143918762
• Automated Classification of Undegraded and Aged Polyethylene Terephthalate Microplastics from ATR-FTIR Spectroscopy using Machine Learning Algorithms　　　　　　　　　　　　　　　
  Christian Ebere Enyoh; Qingyue Wang
  Journal of Polymers and the Environment, Aug. 2023
  Scientific journal
  DOI：https://doi.org/10.21203/rs.3.rs-3225941/v1
  DOI ID：10.21203/rs.3.rs-3225941/v1, ORCID：140260305
• Size-resolved environmentally persistent free radicals in urban road dust and association with transition metals.　　　　　　　　　　　　　　　
  Kai Xiao; Zedong Wang; Yousong Zhou; Donglei Fu; Yongqiang Zhang; Zhihan Luo; Yichun Lin; Qingyue Wang; Juan Pei; Guofeng Shen
  Environmental geochemistry and health, Jul. 2023, ［International magazine］
  Environmental persistent free radicals (EPFRs) are receiving growing concerns owing to their potentially adverse impacts on human health. Road dust is one important source of air pollution in most cities and may pose significant health risks. Characteristics of EPFRs in urban road dusts and its formation mechanism(s) are still rarely studied. Here, we evaluated occurrence and size distributions of EPFRs in road dusts from different functional areas of an urban city, and assessed relationship between EPFRs and some transition metals. Strong electron paramagnetic resonance signals of 6.01 × 1016 - 1.3 × 1019 spins/g with the mean g value of 2.0029 ± 0.0019 were observed, indicating that EPFRs consisted of a mixture of C-centered radicals, and C-centered radicals with an adjacent oxygen atom in the urban road dust. Much more EPFRs enriched in finer dust particles. EPFRs significantly correlated with the total Fe, but not water-soluble Fe, suggesting different impacts of water-soluble and insoluble metals in the formation of EFPRs. Health risk assessment results indicated high risk potentials via the ingestion and dermal exposure to EPFRs in road dusts. Future studies are calling to look into formation mechanisms of EPFRs in urban road dusts and to quantitatively evaluate its potential risks on human health.
  English, Scientific journal
  DOI：https://doi.org/10.1007/s10653-023-01688-4
  DOI ID：10.1007/s10653-023-01688-4, PubMed ID：37486413
• Examining the impact of nanoplastics and PFAS exposure on immune functions through inhibition of secretory immunoglobin A in human breast milk.　　　　　　　　　　　　　　　
  Christian Ebere Enyoh; Prosper E Ovuoraye; Wang Qingyue; Weiqian Wang
  Journal of hazardous materials, Volume：459, First page：132103, Last page：132103, Jul. 2023, ［International magazine］
  Emerging contaminants such as nanoplastics (NPs) and per- and polyfluoroalkyl substances (PFAS), have been detected in the environment and breast milk, thus exposing infants to potentially harmful chemicals during breastfeeding. Breast milk contains secretory immunoglobulin A (SIgA), an antibody that plays a vital role in disease protection and the development of the infant's immune system. This study employed molecular simulation and fractional factorial designs to assess the toxicity of NPs and PFAS on breast milk and their influence on infant immunity by inhibiting SIgA. The research found that NPs and PFAS have higher binding affinities to SIgA compared to the control compound. Polycarbonate (-10.7 kcal/mol) had the highest binding affinity among plastics, while Perfluorodecanoic acid (PFDA, - 8.0 kcal/mol) had the highest binding affinity among PFAS. The relative toxic index was higher for PFAS (2.4) than for plastics (1.9), suggesting that PFAS may pose a higher overall toxicity burden on the protein. The presence of specific combinations of NPs and PFAS in breast milk may potentially harm breastfeeding infants, although additional experimental studies are required to validate these findings. These results underscore the potential risks associated with these emerging contaminants in breast milk and their impact on infant immunity.
  English, Scientific journal
  DOI：https://doi.org/10.1016/j.jhazmat.2023.132103
  DOI ID：10.1016/j.jhazmat.2023.132103, PubMed ID：37527590
• Distribution, Potential Sources, and Health Risk of Microplastics (MPs) in Street Dust during and after COVID-19 Lockdown in Bangladesh　　　　　　　　　　　　　　　
  Mominul Haque Rabin; Qingyue Wang; Christian Ebere Enyoh; Xiao Kai; Tasnoba Firoze Sheuty
  Environments, Jul. 2023
  Scientific journal
  DOI：https://doi.org/10.3390/environments10070130
  DOI ID：10.3390/environments10070130, ORCID：139191798
• Nanocellulose-Based Hollow Fibers for Advanced Water and Moisture Management.　　　　　　　　　　　　　　　
  Panpan Niu; Hui Mao; Khak Ho Lim; Qingyue Wang; Wen-Jun Wang; Xuan Yang
  ACS nano, Jul. 2023, ［International magazine］
  Natural plant fibers such as cotton have favorable performance in water and moisture management; however, they suffer from inferior processing ability due to limited diameter and length, as well as natural defects. Although commercially available regenerated cellulose fibers such as lyocell fibers can have tunable structures, they rely on the complete dissolution of cellulose molecules, including the highly crystalline parts, leading to inferior mechanical properties. Through a specially designed coaxial wet-spinning process, we prepare a type of hollow fiber using only cellulose nanofibrils (CNFs) as building blocks. It mimics cotton fibers with a lumen structure but with a tunable diameter and a long length. Moreover, such hollow fibers have superior mechanical properties with a Young's modulus of 24.7 GPa and tensile strength of 341 MPa, surpassing lyocell fibers and most wet-spun CNF-based fibers. Importantly, they have 10 times higher wicking ability, wetting rate, drying rate, and maximum wetting ratio compared to lyocell fibers. Together with a superior long-term performance after 500 rounds of wetting-drying tests, such CNF-based hollow fibers are sustainable choices for advanced textile applications. And this study provides a greater understanding of nanoscale building blocks and their assembled macromaterials, which may help to reveal the magic hierarchical design of natural materials, in this case, plant fibers.
  English, Scientific journal
  DOI：https://doi.org/10.1021/acsnano.3c02553
  DOI ID：10.1021/acsnano.3c02553, PubMed ID：37459214
• Comparison of the heterogeneous reaction of NO2 on the surface of clay minerals and desert dust particles.　　　　　　　　　　　　　　　
  Teng Ma; Jingying Niuhe; Senlin Lu; Lu Zhang; Shumin Zhou; Jin Liu; Wei Zhang; Xinchun Liu; Enyoh Christian Ebere; Qingyue Wang; Weiqian Wang
  Environmental pollution (Barking, Essex : 1987), Volume：334, First page：122134, Last page：122134, Jul. 2023, ［International magazine］
  Mineral particles in air could provide atmospheric chemical reaction interface for gaseous substances and participate in atmospheric chemical reaction process, and affecting the status and levels of gaseous pollutants in air. However, differences of the heterogenous reaction on the surface minerals particles are not very clear. Considering main mineral composition of ambient particles was from dust emission, therefore, typical clay minerals (chlorite, illite) and desert particles (Taklimakan Desert) were selected to analysize chemical reaction of NO2, one of major gaseous pollutants, on mineral particles by using of In-situ DRIFTS (diffuse reflectance infrared Fourier transform spectroscopy) under different condition. And In situ near-ambient pressure X-ray photoelectron spectroscopy (In situ NAP-XPS) was employed to investigate iron (one of the major metals) species variation on the surface of mineral dust particles during the heterogeneous reactions. Our data show that humidity controlled by deuterium oxide (D2O) has a greater effect on chemical reactions compared to light and temperature. Under dry conditions, the amount of heterogeneous reaction products of NO2 on the particles shows Xiaotang dust > chlorite > illite > Tazhong dust regardless of dark or light conditions. In contrast, under humidity conditions, the order of nitrate product quantity under moderate conditions was chlorite > illite > Xiaotang dust > Tazhong dust. In situ NAP-XPS results demonstrate that specie variation of the Fe could promote the heterogenous reactions. These data could provide useful information for understanding the formation mechanism of nitrate aerosols and removal of nitrogen oxides in the atmosphere.
  English, Scientific journal
  DOI：https://doi.org/10.1016/j.envpol.2023.122134
  DOI ID：10.1016/j.envpol.2023.122134, PubMed ID：37414123
• Adsorption and toxicity characteristics of ciprofloxacin on differently prepared polyethylene terephthalate microplastics from both experimental and theoretical perspectives　　　　　　　　　　　　　　　
  Christian Ebere Enyoh; Qingyue Wang
  Journal of Water Process Engineering, Jul. 2023
  Scientific journal
  DOI：https://doi.org/10.1016/j.jwpe.2023.103909
  DOI ID：10.1016/j.jwpe.2023.103909, ORCID：136984721
• Covalent Organic Framework-Supported Metallocene for Ethylene Polymerization.　　　　　　　　　　　　　　　
  Bangban Zhu; Kan Liu; Liqiong Luo; Ziyang Zhang; Yangke Xiao; Minghao Sun; Suyun Jie; Wen-Jun Wang; Jijiang Hu; Shengbin Shi; Qingyue Wang; Bo-Geng Li; Pingwei Liu
  Chemistry (Weinheim an der Bergstrasse, Germany), First page：e202300913, Jun. 2023, ［International magazine］
  The loading of homogeneous catalysts with support can dramatically improve their performance in olefin polymerization. However, the challenge lies in the development of supported catalysts with well-defined pore structures and good compatibility to achieve high catalytic activity and product performance. Herein, we report the use of an emergent class of porous material-covalent organic framework material (COF) as a carrier to support metallocene catalyst-Cp2 ZrCl2 for ethylene polymerization. The COF-supported catalyst demonstrates a higher catalytic activity of 31.1×106  g mol-1  h-1 at 140 °C, compared with 11.2×106  g mol-1  h-1 for the homogenous one. The resulting polyethylene (PE) products possess higher weight-average molecular weight (Mw ) and narrower molecular weight distribution (Ð) after COF supporting, that is, Mw increases from 160 to 308 kDa and Ð drops from 3.3 to 2.2. The melting point (Tm ) is also increased by up to 5.2 °C. Moreover, the PE product possesses a characteristic filamentous microstructure and demonstrates an increased tensile strength from 19.0 to 30.7 MPa and elongation at break from 350 to 1400 % after catalyst loading. We believe that the use of COF carriers will facilitate the future development of supported catalysts for highly efficient olefin polymerization and high-performance polyolefins.
  English, Scientific journal
  DOI：https://doi.org/10.1002/chem.202300913
  DOI ID：10.1002/chem.202300913, PubMed ID：37341127
• Mechanistic Understanding of Efficient Polyethylene Hydrocracking over Two-Dimensional Platinum-Anchored Tungsten Trioxide.　　　　　　　　　　　　　　　
  Qimin Zhou; Deliang Wang; Qingyue Wang; Kailin He; Khak Ho Lim; Xuan Yang; Wen-Jun Wang; Bo-Geng Li; Pingwei Liu
  Angewandte Chemie (International ed. in English), First page：e202305644, Jun. 2023, ［International magazine］
  Chemical upcycling of polyethylene (PE) can convert plastic waste into valuable resources. However, engineering a catalyst that allows PE decomposition at low temperatures with high activity remains a significant challenge. Herein, we anchored 0.2 wt.% platinum (Pt) on defective two-dimensional tungsten trioxide (2D WO3 ) nanosheets and achieved hydrocracking of high-density polyethylene (HDPE) waste at 200-250 °C with a liquid fuel (C5-18 ) formation rate up to 1456 gproducts  ⋅ gmetal species -1  ⋅ h-1 . The reaction pathway over the bifunctional 2D Pt/WO3 is elucidated by quasi-operando transmission infrared spectroscopy, where (I) well-dispersed Pt immobilized on 2D WO3 nanosheets trigger the dissociation of hydrogen; (II) adsorption of PE and activation of C-C cleavage on WO3 are through the formation of C=O/C=C intermediates; (III) intermediates are converted to alkane products by the dissociated H. Our study directly illustrates the synergistic role of bifunctional Pt/WO3 catalyst in the hydrocracking of HDPE, paving the way for the development of high-performance catalysts with optimized chemical and morphological properties.
  English, Scientific journal
  DOI：https://doi.org/10.1002/anie.202305644
  DOI ID：10.1002/anie.202305644, PubMed ID：37325872
• Research on Repressing Allergen Cry j 1 Released from Japanese Cedar Pollen Using Todomatsu Oil　　　　　　　　　　　　　　　
  Yichun Lin; Kai Xiao; Qingyue Wang; Senlin Lu; Weiqian Wang; Akifumi Seguchi
  Atmosphere, Jun. 2023
  Scientific journal
  DOI：https://doi.org/10.3390/atmos14060991
  DOI ID：10.3390/atmos14060991, ORCID：136544735
• Preliminary characterization and probabilistic risk assessment of microplastics and potentially toxic elements (PTEs) in garri (cassava flake), a common staple food consumed in West Africa.　　　　　　　　　　　　　　　
  Christian Ebere Enyoh; Qingyue Wang; Mominul Haque Rabin; Rasheed Oluwafemi Bakare; Joseph Longji Dadiel; Wu Shangrong; Senlin Lu; Ifenna Ilechukwu
  Environmental analysis, health and toxicology, Volume：38, Number：1, First page：e2023005-0, Mar. 2023, ［International magazine］
  Garri from cassava is one of the most consumed foods in West Africa, hence this research was conducted to examine microplastics (MPs) and potentially toxic elements (PTEs) in garri from Nigeria (West Africa) and Japan. This is the first investigation on MPs in garri samples that has been reported in the literature. The study analyzed both packaged and unpackaged vended garri samples using microscopic/spectroscopic and X-ray fluorescence techniques for MPs and PTEs respectively. Microplastic particles in the garri samples ranged from (or were between) 2.00±2.00 - 175.00±25.16 particles/50 with > 90 % as fragments and consisted of polyacrylamide, polyethylene terepthalate, polyvinyl alcohol, high density polyethylene, polyvinyl chloride acrylonitrile, polyethylene chlorinated, polypropylene with silicate mix, polychloroprene and polyethylene chlorosulphonated. The mean concentration of PTEs raged from ND to 0.07 mg/g for Cr and Mn, 0.73 to 5.63 mg/g for Fe, ND to 0.57mg/g for Co, 0.23 to 1.21 mg/g for Ni, 0.15 to 1.53 mg/g for Cu, and 0.12 to 0.63 mg/g for Zn. However, their daily intake was low for both adult and children as with the MPs. The sources of MPs and PTEs were mainly from the garri production processes, atmospheric dusts and during packaging. The non-carcinogenic risk for all samples was low for MPs while in openly vended garri, Ni and Cr in all sample poses carcinogenic risks. There is a need to improve indigenous garri processing techniques to minimize contamination. This research emphasizes the critical necessity to understand the consequences of MPs on human health.
  English, Scientific journal
  DOI：https://doi.org/10.5620/eaht.2023005
  DOI ID：10.5620/eaht.2023005, PubMed ID：37100400, PubMed Central ID：PMC10195672
• Study on Lowering the Group 1 Protease Allergens from House Dust Mites by Exposing to Todomatsu Oil Atmosphere　　　　　　　　　　　　　　　
  Yichun Lin; Kai Xiao; Weiqian Wang; Senlin Lu; Qingyue Wang
  ATMOSPHERE, Volume：14, Number：3, Mar. 2023
  Group 1 protease allergens that persist in fecal particles from house dust mites (HDM) are the prevalent indoor aeroallergens and the primary triggers of dust mite allergy. Consequently, it is vital to discover a secure, efficient, affordable, and eco-friendly inhibitor to restrain these allergens. Herein, an assessment on the suppression of allergens Der f 1 and Der p 1 (predominant Group 1 allergens) with todomatsu oil derived from the remnants of Abies sachalinensis was performed using enzyme-linked immunosorbent assay (ELISA), sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), and molecular docking analysis in silico. The results demonstrated that todomatsu oil effectively suppresses allergens Der f 1 and Der p 1 by lowering their allergen contents, and the decline rate rises with increasing todomatsu oil concentration. The formation of alkyl hydrophobic interactions, pi-sigma bonds, and hydrogen bonds have been observed between oil ingredients and allergens Der f 1 and Der p 1. Intriguingly, the majority of oil ingredients prefer to dock on hydrophobic amino acids. Additionally, oil ingredients docked to the cysteine protease site on Der f 1 or IgG epitope on Der p 1 were discovered. Notably, the binding affinity (BA) score and inhibition constant (Ki) revealed that bornyl acetate, the component with the maximum relative proportion in todomatsu oil, is included in the top five ingredients with the best inhibition effectiveness. As a result, todomatsu oil has been identified as an efficient inhibitor against Group 1 HDM allergens and a viable measure to improve indoor air quality.
  MDPI, English, Scientific journal
  DOI：https://doi.org/10.3390/atmos14030548
  DOI ID：10.3390/atmos14030548, eISSN：2073-4433, Web of Science ID：WOS:000954027900001
• Study on Thermal Degradation Processes of Polyethylene Terephthalate Microplastics Using the Kinetics and Artificial Neural Networks Models　　　　　　　　　　　　　　　
  Tanzin Chowdhury; Qingyue Wang
  PROCESSES, Volume：11, Number：2, Feb. 2023
  Because of its slow rate of disintegration, plastic debris has steadily risen over time and contributed to a host of environmental issues. Recycling the world's increasing debris has taken on critical importance. Pyrolysis is one of the most practical techniques for recycling plastic because of its intrinsic qualities and environmental friendliness. For scale-up and reactor design, an understanding of the degradation process is essential. Using one model-free kinetic approach (Friedman) and two model-fitting kinetic methods (Arrhenius and Coats-Redfern), the thermal degradation of Polyethylene Terephthalate (PET) microplastics at heating rates of 10, 20, and 30 degrees C/min was examined in this work. Additionally, a powerful artificial neural network (ANN) model was created to forecast the heat deterioration of PET MPs. At various heating rates, the TG and DTG thermograms from the PET MPs degradation revealed the same patterns and trends. This showed that the heating rates do not impact the decomposition processes. The Friedman model showed activation energy values ranging from 3.31 to 8.79 kJ/mol. The average activation energy value was 1278.88 kJ/mol from the Arrhenius model, while, from the Coats-Redfern model, the average was 1.05 x 10(4) kJ/mol. The thermodynamics of the degradation process of the PET MPs by thermal treatment were all non-spontaneous and endergonic, and energy was absorbed for the degradation. It was discovered that an ANN, with a two-layer hidden architecture, was the most effective network for predicting the output variable (mass loss%) with a regression coefficient value of (0.951-1.0).
  MDPI, English, Scientific journal
  DOI：https://doi.org/10.3390/pr11020496
  DOI ID：10.3390/pr11020496, eISSN：2227-9717, Web of Science ID：WOS:000942301900001
• Behavior of Autumn Airborne Ragweed Pollen and Its Size-Segregated Allergens (Amb a 1): A study in Urban Saitama, Japan　　　　　　　　　　　　　　　
  Weiqian Wang; Qingyue Wang; Senlin Lu; Yichun Lin; Miho Suzuki; Yuma Saito
  ATMOSPHERE, Volume：14, Number：2, Feb. 2023
  The prevalence of ragweed (Ambrosia artemisiifolia) pollinosis has been increasing worldwide. This study focused on the behavior of autumn airborne pollen and the major ragweed allergen -Amb a 1 particle in urban Saitama, Japan, in 2016. Burkard sampler results showed that the airborne ragweed pollen scattering season was from September 1st to October 9th. Over 83% of sampling events had pollen counts of over 13 grains/m(3), indicating the high potential health risks of ragweed pollen in the atmosphere. The results of a surface plasmon resonance immunoassay (SPR) indicated that the average Amb a 1 count was about 16.5 pg /pollen. The airborne Amb a 1 concentration was up to 4.7 ng/m(3), of which about 45% was accumulated in ultrafine particles, such as particulate matter with a diameter <= 1.1 mu m (PM1.1). Although ragweed pollen was hardly observed during the October 14th-17th sampling campaign, the concentration of ambient Amb a 1 particles in PM1.1 was also determined to be 4.59 ng/m(3), which could be explained by the longer scattering of fine particles in the atmosphere. Pearson correlation coefficient analysis results showed that temperature (daily, r = 0.41; event, r = 0.87) could affect the behavior of the airborne pollen counts, and ambient water-soluble ions (such as Ca2+ and NO3-) could affect Amb a 1 in PM1.1. Additionally, air mass trajectories and wind rose results indicated that air masses with long-range transportation could also influence the temporary behavior of Amb a 1 and pollen counts via the wind. Mugwort and Humulus japonicus pollens were also observed to extend pollen scattering periods. Airborne pollen and allergenic particles could be considered air pollutants, as they pose health risks and are susceptible to environmental influences.
  MDPI, English, Scientific journal
  DOI：https://doi.org/10.3390/atmos14020247
  DOI ID：10.3390/atmos14020247, eISSN：2073-4433, Web of Science ID：WOS:000938221300001
• Evaluation of Nanoplastics Toxicity to the Human Placenta in Systems　　　　　　　　　　　　　　　
  Christian Ebere Enyon; Chidi Edbert Duru; Prosper E. Ovuoraye; Qingyue Wang
  Journal of Hazardous Materials (Impact Factor 14.224), Volume：Vol.446, First page：130600, Last page：130600, Feb. 2023, [Reviewed], [Lead], ［International magazine］
  Following the discovery of plastics in the human placenta, this study evaluated the toxicity of ten different nanoplastics (NPs) in the human placenta. Since the placenta performs metabolic and excretion functions by the enzymatic system, the NPs were docked on these human enzymes including soluble epoxide hydrolase, uracil phosphoribosyltransferase, beta 1,3-glucuronyltransferase I, sulfotransferase, N-acetyltransferase 2, and cytochrome P450 1A1at their active sites with toxicity (binding affinity) determined and compared to control compounds. Density functional theory analysis were conducted on the NPs to identify their global reactivity descriptors and Artificial Neural Networks to predict toxicity based on reactivity descriptors. Polycarbonate (PC), polyethylene terephthalate (PET) and polystyrene (PS) showed the highest toxicity to all enzymes and thus the most toxic polymers due to the presence of an electron-withdrawing group in their aromatic rings, which demonstrated an improved recognition of the enzyme active site by pi-and alkyl interactions. A 210-6 fractional factorial design approach was used in conjunction with a fixed effects model to assess the primary and secondary effects of NPs in a composite system on binding affinity to the placental enzymes. The simulation results suggest that NPs mixture may pose significant risks to the placenta through inhibition of its key enzymes.
  ELSEVIER, English, Scientific journal
  DOI：https://doi.org/10.1016/j.jhazmat.2022.130600
  DOI ID：10.1016/j.jhazmat.2022.130600, ISSN：0304-3894, eISSN：1873-3336, PubMed ID：36584646, Web of Science ID：WOS:000914753300001
• Physico-Chemical Characterization of Food Wastes for Potential Soil Application　　　　　　　　　　　　　　　
  Md. Rezwanul Islam; Qingyue Wang; Yue Guo; Weiqian Wang; Sumaya Sharmin; Christian Ebere Enyoh
  PROCESSES, Volume：11, Number：1, Jan. 2023
  Food waste is a matter of deep concern as it is creating multidimensional threats to the environment. Though these are potential sources of plant nutrients, a detailed investigation has not yet been conducted. Hence, a physico-chemical characterization of non-edible food waste such as brinjal waste, potato peels, banana peels, orange peels, eggshells, cow bones, chicken bones, fish bones, and their combined waste was accomplished using FTIR, TGA, XGT-5000, CHN corder, etc. The present study revealed that plant waste samples had lower ash contents (1.36-7.79%) but higher volatile matter (72.33-80.04%), and the reverse was true in animal waste. In addition, animal waste, except eggshells (22.48%), had lower fixed carbon (1.01-2.83%). On the other hand, fruit waste was documented with higher fixed carbon (11.33-14.27%). Results also indicated that animal waste and their combined samples, except eggshells, contained more nitrogen (3.82-5.06%). The concentration of P was statistically significant in the combined fruit sample (28.21% +/- 8.451), followed by banana peels (24.96% +/- 11.644). Vegetable waste contained a significantly higher amount of K (24.90% +/- 28.311-37.92% +/- 24.833) than other waste. Maximum Ca (68.82% +/- 10.778) and Mg (15.37% +/- 29.88) were recorded in eggshell and fish bone waste, respectively. Except for Zn and Mn in eggshells, the waste studied contained a significant amount of micronutrients. FTIR demonstrated the presence of different functional groups such as alcoholic group (OH), aliphatic chain (C-H), aromatic chain (C-H), alkyl aryl ether (C-O), carbonyl group (C=O), alkene (C=C), thiocyanate (S-CN), isothiocyanate (N=C=S), allene (C=C=C), sulphate (S=O), amine (N-H), and NO stretching band, which varied with the waste used. Thermogravimetric analysis revealed that plant waste degraded more quickly than animal waste. Eggshells were found to be less degradable by increased temperature, followed by cow bones > fish bones > chicken bones. The waste material used in the study was slightly acidic (6.67-6.82) in nature. Correlation analysis of the nutrients showed mainly positive relations in all samples for macro and micronutrients. Therefore, non-edible food waste can be a possible source of plant nutrients.
  MDPI, English, Scientific journal
  DOI：https://doi.org/10.3390/pr11010250
  DOI ID：10.3390/pr11010250, eISSN：2227-9717, Web of Science ID：WOS:000927742100001
• Synthesis and characterization of polyolefin thermoplastic elastomers: A review　　　　　　　　　　　　　　　
  Minghao Sun; Yangke Xiao; Kan Liu; Xuan Yang; Pingwei Liu; Suyun Jie; Jijiang Hu; Shengbin Shi; Qingyue Wang; Khak Ho Lim; Zhenxue Liu; Bo-Geng Li; Wen-Jun Wang
  CANADIAN JOURNAL OF CHEMICAL ENGINEERING, Jan. 2023
  Polyolefin thermoplastic elastomers (TPE-Os) are high-performance polyolefins consisting of both plastic and rubber phases. Compared with other thermoplastic elastomers, the TPE-Os possess better chemical stability, transparency, re-processability, and electrical insulation, which renders their broad applications possible. By manipulating chain structures and topologies of the TPE-Os, differently structured polyolefins with improved thermal and mechanical properties have been developed, including ethylene and alpha-olefin random copolymers (POEs), olefin block copolymers (OBCs), comb-shaped polyolefin elastomers (CPOEs), and dynamically cross-linked polyolefin elastomers. Herein, we review the synthesis of the POE, OBC, CPOE, and dynamical cross-linked polyolefin elastomer, including the catalyst systems, polymerization techniques, processes, and kinetic modelling. The characterization of the TPE-Os and the relationships between the TPE-O chain structure, aggregated state, and product performance are discussed. The future development of higher-performance TPE-Os is envisaged.
  WILEY, English
  DOI：https://doi.org/10.1002/cjce.24825
  DOI ID：10.1002/cjce.24825, ISSN：0008-4034, eISSN：1939-019X, Web of Science ID：WOS:000923333400001
• Degradation of Polyethylene Terephthalate Microplastics by Mineral Acids: Experimental, Molecular Modelling and Optimization Studies　　　　　　　　　　　　　　　
  Tanzin Chowdhury; Qingyue Wang; Christian Ebere Enyoh
  JOURNAL OF POLYMERS AND THE ENVIRONMENT, Volume：30, Number：12, First page：5211, Last page：5227, Dec. 2022
  Mineral acids in the atmosphere breakdown on the action of oxygen and release acid gases into atmosphere causing acid rain, which can chemically weather materials. We hypothesized that the chemical weathering caused by these mineral acids may also influence the rate of degradation or cracking of MPs in the environment. However, studies focusing on the chemical weathering process of mineral acids in the environment on polyethylene terephthalate (PET) is not available in literature. In the present work, PET microplastics (MPs) (1000 mu m) were artificially degraded by acids such as hydrochloric acid (HA), nitric acid (NA) and sulphuric acid (SA) under the effect of contact time (30, 60, 120, 720 and 1440 min), temperature (10, 25, 40, 70,100 and 130 degrees C), and shaking speed (100, 150, 200 and 250 rpm). Degradation was monitored by weight loss, Variable Pressure Scanning Electron Microscope (VP-SEM) and Attenuated total reflectance-Fourier-Transform Infrared (ATR-FTIR) and optimized by Response Surface Methodology (RSM). Results showed that the weight loss were slow but increased with increasing contact time, temperature and shaking speed. For all three acids, the PET MPs spectra peak loss was similar for the different effects. However, the speed of degradation based on the ATR-FTIR and weight loss results followed temperature > shaking speed > contact time. The surface interactions between the PET MPs and acids were investigated using Monte Carlo (MC) simulations and Density functional theory (DFT) Studies. Overall, ATR-FTIR analysis and DFT studies suggested that the breakdown took place through the parts of the PET MPs structure containing oxygen atoms (-OH, C=O) and the aromatic ring. However, optimization results from RSM showed optimal weight loss of 33%, 30% and 22% for HA, SA and NA respectively. Therefore, these acids can be employed in PET MPs degradation and higher rate of degradation will require longer time, high temperature and shaking speeds.
  SPRINGER, English, Scientific journal
  DOI：https://doi.org/10.1007/s10924-022-02578-z
  DOI ID：10.1007/s10924-022-02578-z, ISSN：1566-2543, eISSN：1572-8919, Web of Science ID：WOS:000859707900001
• Self-sensing polymer composite containing a continuous and periodic graphene monolayer　　　　　　　　　　　　　　　
  Jigang Du; Yang Zhang; Xubing Wu; Wei Li; Bingxue Jiang; Song Wang; Khak Ho Lim; Qingyue Wang; Pei Zhao; Wen-Jun Wang; Pingwei Liu
  CELL REPORTS PHYSICAL SCIENCE, Volume：3, Number：12, Dec. 2022
  Embedding the capability of self-sensing to polymeric materials pro-vides tremendous opportunities for developing smart materials with highly important applications. However, a facile method that can introduce this capability to different polymers beyond strain sensing remains elusive. Here, we report a strategy of incorporating a continuous graphene sheet as an electric probe into polymer matrices for developing self-sensing composites. The resulted com-posite demonstrates impressively high conductivities of 290 S/m at a graphene volume fraction (VG) of 0.00068, a good electrical recov-ery at a cyclic elastic strain of 30% and a strain-sensing upper limit of 80%. Moreover, the glass transition, melting, and photodegrada-tion process of different polymers can also be monitored in situ, and the corresponding glass transition temperature (Tg) and melting point (Tm) can be calculated. Our work paves the way for the devel-opment and application of novel self-sensing polymer composites with high sensitivity and versatility based on two-dimensional (2D) materials.
  ELSEVIER, English, Scientific journal
  DOI：https://doi.org/10.1016/j.xcrp.2022.101160
  DOI ID：10.1016/j.xcrp.2022.101160, eISSN：2666-3864, Web of Science ID：WOS:000906525400003
• Toxicity evaluation of microplastics to aquatic organisms through molecular simulations and fractional factorial designs　　　　　　　　　　　　　　　
  Christian Ebere Enyoh; Qingyue Wang; Prosper E. Ovuoraye; Tochukwu Oluwatosin Maduka
  CHEMOSPHERE, Volume：308, Number：Pt 2, First page：136342, Last page：136342, Dec. 2022, ［International magazine］
  Molecular docking, molecular dynamics modelling, and fractional factorial design methodologies were used in the current work to examine the harmful effects of ten microplastic (MPs) such as polystyrene (PS), polyvinyl-chloride (PVC), polyurethane (PU), polymethyl methacrylate (PMMA), polyamide (PA), polyethylene tere-phthalate (PET), polyethylene (PE), polypropylene (PP), polychloropene (PCP) and polycarbonate (PC) on the aquatic organism (zebrafish). The toxicity was evaluated based on the docking of the MPs on cytochrome P450 (CYP P450) protein crystals. The binding affinities (Delta G) followed the order, PC (-6.9 kcal/mol) > PET (-6.1 kcal/mol) > PP (-5.8 kcal/mol) > PA (-5.6 kcal/mol) > PS (-5.1 kcal/mol) > PU (-4.1 kcal/mol) > PMMA (-3.9 kcal/mol) > PCP (-3.3 kcal/mol) > PVC (-2.4 kcal/mol) > PE (-2.1 kcal/mol). The primary driving factors for the binding of the MPs and the protein were hydrophobic force, and hydrogen bonding based on the molecular dynamics analysis and surrounding amino acid residues. Furthermore, a 210-5 fractional factorial design method was estimated to identify the main effect and second-order effects of MPs in a composite contamination system on binding affinity/energy to CYP450 receptor protein of zebrafish, combined with a fixed effects model. The findings showed that different MPs combinations had varying impacts on aquatic toxicity; as a consequence, the best combination of MPs with the lowest aquatic toxicity effect could be excluded. The factorial designs showed that the PU-PS and PP-PA combination and single PCP, has the most significant main effect on CYP450 receptor protein of zebrafish which translates to an optimum toxicity level of-4.61 kcal/mol. The investigation offers a theoretical foundation for identifying the hazardous impacts of MPs on aquatic life.
  PERGAMON-ELSEVIER SCIENCE LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.chemosphere.2022.136342
  DOI ID：10.1016/j.chemosphere.2022.136342, ISSN：0045-6535, eISSN：1879-1298, PubMed ID：36087717, Web of Science ID：WOS:000867421700005
• Estimation of Pollution Levels and Assessment of Human Health Risks from Potentially Toxic Metals in Road Dust in Mymensingh City of Bangladesh　　　　　　　　　　　　　　　
  Md Humayun Kabir; Md Harun Rashid; Qingyue Wang
  PROCESSES, Volume：10, Number：12, Dec. 2022
  The assessment of toxic metals pollution in road dust in Mymensingh city, Bangladesh and its impact on the health risk of human exposure to toxic metals, is inadequate. A comprehensive investigation was conducted in different land use areas, i.e., commercial areas (CA), medically facilitated areas (MFA), residential areas (RA), and park areas (PA), to determine levels of Cr (chromium), Mn (manganese), Ni (nickel), Co (cobalt), Cu (copper), Zn (zinc), As (arsenic), Cd (cadmium), and Pb (lead) using inductively coupled plasma mass spectroscopy (ICP-MS). We planned to use different pollution indices, such as the geoaccumulation index (I-geo), contamination factor (CF), degree of contamination (C-deg), ecological risk (Er), pollution load index (PLI), and enrichment factor (EF), to measure the level of contamination in the road dust of Mymensingh City. The average concentration (mg/kg) ranges of toxic metals in the road dust at different land use areas of Mymensingh City were: Cr (40.8-85.5), Mn (370.7-589.2), Co (6.2-8.7), Ni (22.7-34.2), Cu (29.5-72.2), Zn (236.2-467.1), As (4.9-6.29), Cd (0.32-1.07), and Pb (27.4-81.7), respectively. The CF and PLI results showed that the road dust in these zones was contaminated with toxic metals. The indicator I-geo revealed that CA was found to be 'moderately to heavily contaminated' ranked with Zn and Cd. Calculation of EF indicated that Cu, Zn, As, Cd, and Pb were highly enriched, while others were moderately enriched. According to the C-deg findings, CA, MFA, and RA have very high degrees of contamination (C-deg >= 24), while PA was classified as having a considerable degree of contamination (12 <= C-deg < 24). The Er index showed that only Cd posed a 'medium potential ecological risk' to a 'high ecological potential risk' in road dust. The most common route of exposure was ingestion. The study indicated that the hazard quotient (HQ) and hazard index (HI) in CA, MFA, RA, and PA were less than one for children and adults, which were at a noncarcinogenic risk. The only exception was for children exposed to manganese (HI > 1) in all land use areas. In the research area, no significant carcinogenic health risk was observed for Cr, Ni, As, Cd, and Pb.
  MDPI, English, Scientific journal
  DOI：https://doi.org/10.3390/pr10122474
  DOI ID：10.3390/pr10122474, eISSN：2227-9717, Web of Science ID：WOS:000902665400001
• PayDebt: Reduce Buffer Occupancy Under Bursty Traffic on Large Clusters　　　　　　　　　　　　　　　
  Kexin Liu; Chen Tian; Qingyue Wang; Yanqing Chen; Bingchuan Tian; Wenhao Sun; Ke Meng; Long Yan; Lei Han; Jie Fu; Wanchun Dou; Guihai Chen
  IEEE TRANSACTIONS ON PARALLEL AND DISTRIBUTED SYSTEMS, Volume：33, Number：12, First page：4707, Last page：4722, Dec. 2022
  The average/tail Flow Completion Times (FCTs) are critical to many datacenter applications. Congestion control plays a central role in optimizing FCT. Inappropriate congestion control can exacerbate buffer occupancy, thus hurting the flow performance. Our observations are that current approaches are too aggressive in injecting packets into underlying networks. Instead of handling buffer explosion afterward, we reduce buffer occupancy in the first place. We propose PayDebt, a novel and readily-deployable proactive congestion control protocol. At its heart, a debt mechanism provides bandwidth coordination between the already-buffered and the forthcoming packets. We evaluate PayDebt both in a testbed and large-scale simulations. The buffer occupancy can be decreased by up to 8.0x-35.9x compared to DCQCN and Homa.
  IEEE COMPUTER SOC, English, Scientific journal
  DOI：https://doi.org/10.1109/TPDS.2022.3202504
  DOI ID：10.1109/TPDS.2022.3202504, ISSN：1045-9219, eISSN：1558-2183, Web of Science ID：WOS:000853835300002
• Pollution Characteristics, Source Apportionment, and Health Risk of Polycyclic Aromatic Hydrocarbons (PAHs) of Fine Street Dust during and after COVID-19 Lockdown in Bangladesh　　　　　　　　　　　　　　　
  Mominul Haque Rabin; Qingyue Wang; Weiqian Wang; Christian Ebere Enyoh
  PROCESSES, Volume：10, Number：12, Dec. 2022
  The COVID-19 period has had a significant impact on both the global environment and daily living. The COVID-19 lockdown may provide an opportunity to enhance environmental quality. This study has evaluated the effect of the COVID-19 lockdown on the distribution of polycyclic aromatic hydrocarbons (PAHs) in the street dust (diameter < 20 mu m) of different land use areas in Dhaka city, Bangladesh, using gas chromatography-mass spectrometry (GC-MS). The maximum (2114 ng g(-1)) concentration of n-ary sumation 16 PAHs was found in the industrial area during without lockdown conditions and the minimum (932 ng g(-1)) concentration was found in the public facilities area during the complete lockdown. Meanwhile, due to the partial lockdown, a maximum of 30% of the n-ary sumation 16 PAH concentration decreased from the situation of without lockdown in the industrial area. The highest result of 53% of the n-ary sumation 16 PAH concentration decreased from the situation without lockdown to the complete lockdown in the commercial area. The 4-ring PAHs had the highest contribution, both during and after the lockdown conditions. PAH ratios, correlation, principal component analysis (PCA), and hierarchical clustering analysis (HCA) were applied in order to evaluate the possible sources. Two major origins of PAHs in the street dust were identified as petroleum and petrogenic sources, as well as biomass and coal combustion. Ingestion and dermal pathways were identified as the major exposure routes to PAHs in the dust. The total incremental lifetime cancer risk (ILCR) due to exposure for adults and children ranged from 8.38 x 10(-8) to 1.16 x 10(-7) and from 5.11 x 10(-8) to 1.70 x 10(-7), respectively. These values were lower than the baseline value of acceptable risk (10(-6)), indicating no potential carcinogenic risk. This study found that the COVID-19 lockdown reduced the distribution of PAHs in the different sites of Dhaka city, thus providing a unique opportunity for the remarkable improvement of degraded environmental resources.
  MDPI, English, Scientific journal
  DOI：https://doi.org/10.3390/pr10122575
  DOI ID：10.3390/pr10122575, eISSN：2227-9717, Web of Science ID：WOS:000902799000001
• Analytical techniques, occurrence and health effects of micro and nano plastics deposited in street dust　　　　　　　　　　　　　　　
  Qingyue Wang; Christian Ebere Enyoh; Tanzin Chowdhury; Md. Akhter Hossain Chowdhury
  INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY, Volume：102, Number：18, First page：6435, Last page：6453, Dec. 2022
  Urban street dust is regarded as a significant pollutant in the urban environment and an ideal indicator of urban environmental quality. Even so, studies regarding this matrix for microplastics (MPs) and nanoplastics (NPs) pollution are often overlooked and only a few studies have been conducted to date. MPs and NPs are ubiquitous in nature and of current concern to scientists, governmental and non-governmental organisation. A key issue in understanding the fate and potential effects of MPs and NPs is their dynamic nature, as the size, shape, and charge of the particles change overtime. Reviewed studies suggested that they are present in significant quantities in deposited street dust comprised mainly of PES (Polyester), PP (Polypropylene), PE (Polyethylene), TRWP (Tire and road wear particles) and the concentrations are influenced by anthropogenic activities. These studies therefore suggest dusts as a significant exposure route of human and ecosystem to MPs and NPs. The present review provided a comprehensive overview of current knowledge or information including analytical procedure regarding MPs and NPs in road deposited street dust, identifying gaps in knowledge, and giving suggestions for future research. The significance of this review is that, dusts particles can be easily ingested by humans through inhalation or contact and humans may simultaneously ingest MPs and NPs. Therefore, understanding the dynamics of their sources, pathways, and reservoirs is very important particularly for scientist studying the occurrence and fate of MPs and NPs in ecosystems as well as the general public.
  TAYLOR & FRANCIS LTD, English, Scientific journal
  DOI：https://doi.org/10.1080/03067319.2020.1811262
  DOI ID：10.1080/03067319.2020.1811262, ISSN：0306-7319, eISSN：1029-0397, Web of Science ID：WOS:000562605800001
• Analysis of predictors of mortality and clinical outcomes of different subphenotypes for moderate-to-severe pediatric acute respiratory distress syndrome: A prospective single-center study　　　　　　　　　　　　　　　
  Qingyue Wang; Yanling Liu; Yueqiang Fu; Chengjun Liu; Jing Li; Hongxing Dang
  FRONTIERS IN PEDIATRICS, Volume：10, First page：1019314, Last page：1019314, Nov. 2022, ［International magazine］
  BackgroundThis study aimed to observe the prognosis of patients with moderate-to-severe pediatric acute respiratory distress syndrome (PARDS) admitted to the Pediatric Intensive Care Unit (PICU) as a function of underlying conditions and available treatment strategies, and to investigate the risk factors for death and the outcomes of different clinical subphenotypes. MethodsPatients were divided into non-survivors and survivors according to the prognosis 28 days after the diagnosis. The risk factors for death and the predictive value of relevant factors for mortality were analyzed. Latent class analysis was used to identify different clinical subphenotypes. ResultsA total of 213 patients with moderate-to-severe PARDS were enrolled, of which 98 (46.0%) died. Higher PELOD2 scores (OR = 1.082, 95% CI 1.004-1.166, p < 0.05), greater organ failure (OR = 1.617, 95% CI 1.130-2.313, p < 0.05), sepsis (OR = 4.234, 95% CI 1.773-10.111, p < 0.05), any comorbidity (OR = 3.437, 95% CI 1.489-7.936, p < 0.05), and higher infiltration area grade (IAG) (OR = 1.980, 95% CI 1.028-3.813, p < 0.05) were associated with higher mortality. The combination of these five indicators had the largest area under the curve (sensitivity 89.79%, specificity 94.78%). Patients were classified into higher-risk and lower-risk phenotype group according to the latent class analysis. Compared to the lower-risk phenotype, more patients with higher-risk phenotype suffered from sepsis (24.40% vs. 12.20%, p < 0.05), inherited metabolic diseases (45.80% vs. 25.60%, p < 0.05), positive respiratory pathogens (48.10% vs. 26.80%, p < 0.05), and higher IAG (p < 0.05); they also had significantly higher PIM3 and PELOD2 scores (p < 0.05), with an extremely high mortality rate (61.1% vs. 22.0%, p < 0.05). ConclusionsModerate-to-severe PARDS has high morbidity and mortality in PICU; a higher PELOD2 score, greater organ failure, sepsis, any comorbidity, and higher IAG were risk factors for death, and the combination of these five indicators had the greatest value in predicting prognosis. More patients with sepsis, positive respiratory pathogens, higher PIM3 and PELOD2 scores, and higher IAG were in higher-risk phenotype group, which had worse outcomes. Clear classification facilitates targeted treatment and prognosis determination.
  FRONTIERS MEDIA SA, English, Scientific journal
  DOI：https://doi.org/10.3389/fped.2022.1019314
  DOI ID：10.3389/fped.2022.1019314, ISSN：2296-2360, PubMed ID：36389387, PubMed Central ID：PMC9665116, Web of Science ID：WOS:000885179200001
• In Silico Screening of Active Compounds in Garri for the Inhibition of Key Enzymes Linked to Diabetes Mellitus　　　　　　　　　　　　　　　
  Christian Ebere Enyoh; Tochukwu Maduka; Qingyue Wang; Md Rezwanul Islam
  ACS FOOD SCIENCE & TECHNOLOGY, Volume：2, Number：10, First page：1597, Last page：1611, Oct. 2022
  Through in silico screening, this study seeks to demonstrate a connection between ethnopharmacological claims and the bioactive components found in Garri against potential targets for diabetes. The process of molecular docking involving different bonding modes of compounds in Garri with active cavities of target receptors for proteins human pancreatic alpha-amylase (HPA) and human lysosomal acid-alpha-glucosidase (GAA) was carried out in autodock vina. Density functional theory was used for quantum chemical analysis, while ADME/T properties of the top binding compounds were predicted using the Admetsar and Swissadme database. From the results, (20E)-6-hydroxycholesta-9(11),20(22)-diene-3,23-dione, 25-dedhydrotigogenin, cochlioquinone B, and psi-diosgenin, showed the best docking results (> -8.1 to -9.8 kcal/mol), when compared with the standard control drugs acarbose (-7.9 kcal/mol) and 1-deoxynojirimycin (< -5.1 kcal/mol). The results from the ADME/T prediction also revealed that the compounds had good pharmacokinetic properties. The study provided insights into the development of better inhibitors to treat diabetes from garri.
  AMER CHEMICAL SOC, English, Scientific journal
  DOI：https://doi.org/10.1021/acsfoodscitech.2c00217
  DOI ID：10.1021/acsfoodscitech.2c00217, eISSN：2692-1944, Web of Science ID：WOS:000863552700001
• Combined experimental and molecular dynamics removal processes of contaminant phenol from simulated wastewater by polyethylene terephthalate microplastics　　　　　　　　　　　　　　　
  Christian Ebere Enyoh; Qingyue Wang
  ENVIRONMENTAL TECHNOLOGY, First page：1, Last page：20, Oct. 2022, ［International magazine］
  Microplastics (MPs) and phenolics are pollutants found ubiquitously in freshwater systems. MPs oftentimes serve as a vector for pollutants across ecosystems and are now being explored as alternative adsorbents for pollutant removal. This strategy would reflect the 'reuse' of an existing waste stream into a potentially useful product while at the same time helping to minimize plastic waste in the marine environment. In this study, the adsorption of phenol onto pristine (Pr-PET), modified (Mod-PET), and aged (Ag-PET) Polyethylene Terephthalate (PET) microplastics was examined experimentally and theoretically. Kinetics, isotherms, and thermodynamics models were used to investigate the adsorption process while Grand Canonical Monte Carlo (GCMC) and molecular dynamics (MD) simulations were employed to investigate molecular level alterations. The result showed that the Ag-PET MPs had the best removal efficiency due larger surface area and the adsorption occurred in a pseudo-second-order manner, showing that the rate of phenol adsorption is directly proportional to the number of surface-active sites on the surface of PET MPs while the intraparticle diffusion defined rate-limiting step. However, the maximum monolayer adsorption capacity followed Mod-PET (38.02 mg/g) > Ag-PET (8.08 mg/g) > Pr-PET (6.84 mg/g). The adsorption process proceeded spontaneously and thermodynamically favourable. GCMC-MD simulations revealed that PET MPs are capable of successfully adsorbing the phenol molecule through Van der Waals and electrostatic interactions and can be adopted as novel adsorbents for phenol removal in aqueous solutions.
  TAYLOR & FRANCIS LTD, English, Scientific journal
  DOI：https://doi.org/10.1080/09593330.2022.2139636
  DOI ID：10.1080/09593330.2022.2139636, ISSN：0959-3330, eISSN：1479-487X, PubMed ID：36269120, Web of Science ID：WOS:000875983800001
• Progress of polymer reaction engineering: From process engineering to product engineering　　　　　　　　　　　　　　　
  Pingwei Liu; Jigang Du; Yuting Ma; Qingyue Wang; Khak Ho Lim; Bo-Geng Li
  CHINESE JOURNAL OF CHEMICAL ENGINEERING, Volume：50, First page：3, Last page：11, Oct. 2022
  Polymer reaction engineering studies the design, operation, and optimization of reactors for industrial scale polymerization, based on the theory of polymerization kinetics and transfer processes (e.g., flow, heat and mass transfer). Although the foundation and development of this discipline are less than 80 years, the global production of polymers has exceeded 400 million tons per annum. It demonstrates that polymer reaction engineering is of vital importance to the polymer industry. Along with the maturity of production processes and market saturation for bulk polymers, emerging industries such as information technology, modern transportation, biomedicine, and new energy have continued to develop. As a result, the research objective for polymer reaction engineering has gradually shifted from maximizing the efficiency of the polymerization process to the precise regulation of high-end product-oriented macromolecules and their aggregation structures, i.e., from polymer process engineering to polymer product engineering. In this review, the frontiers of polymer reaction engineering are introduced, including the precise regulation of polymer chain structure, the control of primary aggregation structure, and the rational design of polymer products. We narrow down the topic to the polymerization reaction engineering of vinyl monomers. Moreover, the future prospects are provided for the field of polymer reaction engineering.@2022 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.
  CHEMICAL INDUSTRY PRESS CO LTD, English
  DOI：https://doi.org/10.1016/j.cjche.2022.08.015
  DOI ID：10.1016/j.cjche.2022.08.015, ISSN：1004-9541, eISSN：2210-321X, Web of Science ID：WOS:000902230300002
• Relationships between Mass Level of Allergenic Platanus acerifolia Protein 3 (Pla a3) and Redox Trace Elements in the Size-Resolved Particles in Shanghai Atmosphere　　　　　　　　　　　　　　　
  Senlin Lu; Teng Ma; Lu Zhang; Yule Feng; Shumin Zhou; Wei Zhang; Shinichi Yonemochi; Xinchun Liu; Enyoh Christian Ebere; Weiqian Wang; Qingyue Wang
  ATMOSPHERE, Volume：13, Number：10, Oct. 2022
  Allergenic pollen protein can be released from pollen grains and suspended in the air to cause allergenic reactions. However, the allergenic protein and its relationship with redox trace elements in ambient size-resolved particles has not been reported. Ambient size-resolved particles in Shanghai's atmosphere were sampled during the Platanus pollen season in the spring season of 2017. Planatus pollen protein 3 (Pla a3) and redox trace elements in the ambient particles were investigated and their relationship was analyzed. Our data demonstrated that the mass level of the Pla a3 in the size-resolved particles ranged from 0.41 +/- 0.28 to 7.46 +/- 2.23 pg/m(3), and decreased with the size range. Mass concentrations (ppb) of crustal elements (Fe, Al, Ca, Mg, Na) in the size-resolved particles ranged from 20.11 +/- 9.87 to 1126.22 +/- 659.51, while trace elements (V, Cr, Mn, Co, Ni, Cu, Zn, Ga, As, Se, Rb, Sr, Cd, Cs, Ba, Pb) varied from 0.05 +/- 0.03 to 57.53 +/- 19.7. Mass levels of these trace elements decreased according to particle size. The Abundance of redox trace elements, including Fe (R-2 = 0.82), Mn (R-2 = 0.54), Cu (R-2 = 0.61), Ba (R-2 = 0.82), and Pb (R-2 = 0.82) in the size-resolved particles was significantly related to that of Pla a3, and our data implied redox trace elements might take syngenetic effects on the allergenicity induced by Pla a3 protein.
  MDPI, English, Scientific journal
  DOI：https://doi.org/10.3390/atmos13101541
  DOI ID：10.3390/atmos13101541, eISSN：2073-4433, Web of Science ID：WOS:000872159000001
• Fabrication and Characterization of Activated Carbon from Phyllostachys edulis Using Single-Step KOH Activation with Different Temperatures　　　　　　　　　　　　　　　
  Yue Guo; Qingyue Wang
  PROCESSES, Volume：10, Number：9, Sep. 2022
  Biomass waste from harvestable output is produced in significant quantities by agricultural and forestry processes and can have detrimental effects on the ecosystem. Therefore, biomass derived from the waste in the environment has been recognized as a potential source for preparing functional materials in recent years. In this study, activated carbon (ACs) was fabricated and characterized from Phyllostachys edulis (Moso bamboo) using single-step potassium hydroxide (KOH) activation at different temperatures (500 degrees C to 1000 degrees C). The prepared ACs were characterized for surface morphology, surface area, functional groups and crystallinity using scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) analysis, Fourier transform infrared (FTIR) and X-ray diffraction (XRD), respectively. The SEM revealed well-formed pores on the surface of all ACs, while BET analysis revealed the presence of microporous (<= 800 degrees C) and mesoporous (>800 degrees C) structures. SBET surface area and total pore volume increased with increasing activation temperature, from 434 to 1790 m(2)/g and 0.2089 to 0.8801 cm(3)/g, reaching a maximum at 900 degrees C. FTIR revealed the presence of carbonyl and hydroxyl groups on the surface. XRD showed a dominant amorphous structure and a low crystallization degree in all ACs.
  MDPI, English, Scientific journal
  DOI：https://doi.org/10.3390/pr10091712
  DOI ID：10.3390/pr10091712, eISSN：2227-9717, Web of Science ID：WOS:000859676300001
• Novel Approaches for Inhibiting the Indoor Allergen Der f 2 Excreted from House Dust Mites by Todomatsu Oil Produced from Woodland Residues　　　　　　　　　　　　　　　
  Yichun Lin; Christian Ebere Enyoh; Qingyue Wang; Senlin Lu; Wei Zhang; Kai Xiao; Shumin Zhou; Toshihiko Kaneko; Akifumi Seguchi; Weiqian Wang; Yue Guo
  INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, Volume：19, Number：17, Sep. 2022, ［International magazine］
  House dust mite (HDM) is a globally ubiquitous domestic cause of allergic diseases. There is a pressing demand to discover efficient, harmless, and eco-friendly natural extracts to inhibit HDM allergens that are more likely to trigger allergies and challenging to be prevented entirely. This study, therefore, is aimed at assessing the inhibition of the allergenicity of major HDM allergen Der f 2 by todomatsu oil extracted from residues of Abies Sachalinensis. The inhibition was investigated experimentally (using enzyme-linked immunosorbent assay (ELISA), surface plasmon resonance (SPR), and sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE)) and in silico using molecular docking. The results showed that todomatsu oil inhibits the allergenicity of Der f 2 by reducing its amount instead of the IgG binding capacity of a single protein. Moreover, the compounds in todomatsu oil bind to Der f 2 via alkyl hydrophobic interactions. Notably, most compounds interact with the hydrophobic amino acids of Der f 2, and seven substances interact with CYS27. Contrarily, the principal compounds fail to attach to the amino acids forming the IgG epitope in Der f 2. Interestingly, chemical components with the lowest relative percentages in todomatsu oil show high-affinity values on Der f 2, especially beta-maaliene (-8.0 kcal/mol). In conclusion, todomatsu oil has been proven in vitro as a potential effective public health strategy to inhibit the allergenicity of Der f 2.
  MDPI, English, Scientific journal
  DOI：https://doi.org/10.3390/ijerph191710881
  DOI ID：10.3390/ijerph191710881, eISSN：1660-4601, PubMed ID：36078598, PubMed Central ID：PMC9517791, Web of Science ID：WOS:000852801300001
• Pollution levels and health risk assessment of potentially toxic metals of size-segregated particulate matter in rural residential areas of high lung cancer incidence in Fuyuan, China　　　　　　　　　　　　　　　
  Kai Xiao; Qingyue Wang; Senlin Lu; Yichun Lin; Christian Ebere Enyoh; Tanzin Chowdhury; Mominul Haque Rabin; Md Rezwanul Islam; Yue Guo; Weiqian Wang
  ENVIRONMENTAL GEOCHEMISTRY AND HEALTH, Volume：45, Number：6, First page：2869, Last page：2889, Sep. 2022, ［International magazine］
  The highest incidence and mortality rate of lung cancer in rural area of Fuyuan has been a research hotspot, and the pathogenesis is still unclear. Therefore, atmospheric particulate matters (APMs) samples were collected between 18 February and 01 March 2017, exploring water-soluble potentially toxic metals (WSPTMs) and water-soluble inorganic ionic species (WSIIs) levels, size distribution, sources, acidity and alkalinity, and potential carcinogenic and non-carcinogenic risks, hoping to provide scientific basic data to solve this problem. In our study, the average ratio of nitrate ion (NO3-)/sulfate ion (SO42-) within PM1.1, PM1.1-2.0, PM2.0-3.3, PM3.3-7.0, and PM>7.0 were 0.22, 0.18, 0.15, 0.34 and 0.36, respectively, that revealed that combustion sources contributed to PM were more significant. The anions in equilibrium (ANE) / cations in equilibrium (CAE) < 1 for all samples within PM1.1, PM2.0-3.3, PM3.3-7.0 indicate that the APMs were alkaline, but PM1.1-2.0 particulate matter shows weak acidity. SO42- prefers to combine with NH4+ to form (NH4)(2)SO4, which hinders the formation of NH4NO3, the remaining SO42- and NO3- to neutralize the K+, KNO3 was formed at all particulate, however, K2SO4 can only be formed in PM<3.3. Arsenic (As) and Selenium (Se) were identified as the most enriched WSPTMs in all PM sizes, predominantly from anthropogenic emissions, were suggested that coal combustion is a significant source of PM-bound WSPTMs. Total WSPTMs exhibited high total carcinogenic risks (TCR) values (9.98 x 10(-6), 1.06 x 10(-5), and 1.19 x 10(-5) for girls, boys and adults, respectively) in the smaller particles (< 1.1 mu m). Se was considered as the major contributor (63.60%) to carcinogenic risk (CR) in PM2.0 and had an inverse relationship with PM size that should be of prime concern.
  SPRINGER, English, Scientific journal
  DOI：https://doi.org/10.1007/s10653-022-01374-x
  DOI ID：10.1007/s10653-022-01374-x, ISSN：0269-4042, eISSN：1573-2983, PubMed ID：36088450, Web of Science ID：WOS:000852349600001
• Pollution characteristics and risk assessment of potentially toxic elements of fine street dust during COVID-19 lockdown in Bangladesh　　　　　　　　　　　　　　　
  Mominul Haque Rabin; Qingyue Wang; Md Humayun Kabir; Weiqian Wang
  ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, Volume：30, Number：2, First page：4323, Last page：4345, Aug. 2022, ［International magazine］
  Due to the COVID-19 pandemic, Bangladesh government took the measure like partial lockdown (PL) and complete lockdown (CL) to curb the spread. These measures gave a chance for environmental restoration. In this study, street dust samples were collected during PL and CL from four main urban land use categories in Dhaka city, such as industrial area (IA), commercial area (CA), public facilities area (PFA), and residential area (RA). Ten potentially toxic elements (Cr, Mn, Zn, Fe, Pb, Cu, Co, Ni, As, and Cd) in fine street dust particles (diameter < 20 mu m) were determined following aqua-regia digestion and measured by inductively coupled plasma mass spectrometry (ICP-MS) to evaluate distribution, pollution sources, and potential risks to ecological systems and human health. Results showed that during PL, the concentrations of toxic elements in the dust were higher than that of CL. Cd and Fe were lowest and highest in concentration with 1.56 to 41,970 mu g/g and 0.82 to 39,330 mu g/g in partial and complete lockdown period respectively. All toxic elements were detected at high levels above background values where Fe with the highest and Cd with lowest concentrations, respectively. By land use, the levels of toxic elements pollution followed IA > PFA > RA > CA. Correlation analysis (CA), principal component analysis (PCA), and hierarchal cluster analysis (HCA) revealed that the sources of these analyzed toxic elements were mainly from anthropogenic which are related to industrial and vehicular or traffic emissions. Enrichment factor (EF), geoaccumulation index (I-geo), contamination factor (CF), and pollution load index (PLI) also suggested that the dust was more polluted during PL. Exposure of toxic elements to human was mainly via skin contact followed by ingestion and inhalation. Hazard quotient (HQ) values were < 1 except for Mn through dermal contact at all sites during partial and complete lockdown, similar to hazard index (HI), while Cr further showed high non-carcinogenic risks to children. Generally, children HI values were about 5-6 times higher than those of adults, suggesting a greater vulnerability of children to the health concerns caused by toxic elements in street dust. Carcinogenic risk (CR) values via ingestion pathway indicated all elements (except Pb) had significant health effect, while CR value by inhalation results showed no significant health effect. Cumulative carcinogenic risk (CCR) value had significant health effect except Pb in all land use categories. CCR values decreased during CL and reached at acceptable limit for most of the cases. This research provides a message to the local governments and environmental authorities to have a complete assessment of toxic elements in the street dust of Dhaka megacity in order to assuring public health safety and ecological sustainability.
  SPRINGER HEIDELBERG, English, Scientific journal
  DOI：https://doi.org/10.1007/s11356-022-22541-8
  DOI ID：10.1007/s11356-022-22541-8, ISSN：0944-1344, eISSN：1614-7499, PubMed ID：35971052, PubMed Central ID：PMC9377810, Web of Science ID：WOS:000840631500009
• Submesoscale processes-induced vertical heat transport modulated by oceanic mesoscale eddies　　　　　　　　　　　　　　　
  Qingyue Wang; Changming Dong; Jihai Dong; Hong Zhang; Jingsong Yang
  DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY, Volume：202, Aug. 2022
  Oceanic submesoscale processes mainly arise from phenomena such as jets, density fronts, and mesoscale eddies. Previous studies suggest that the overall submesoscale processes transport heat vertically upgradient, i.e. from cold to warm. However, it is not clear whether the submesoscale processes-induced vertical heat transport (VHT) in mesoscale eddies remains upgradient. Therefore, the present study focuses on submesoscale-induced VHT modulated by mesoscale eddies. A high-resolution oceanic numerical model product is applied to examine the VHT induced by submesoscale processes associated with a pair of cyclonic and anticyclonic mesoscale eddies in the Kuroshio Extension (KE) region. Eddies at different time steps are collocated in terms of the eddy centers to reconstruct a time series of a new eddy dataset that presents eddy-modulated submesoscale processes. The frequency-wavenumber spectra, Rossby numbers, and strain rates in the pair of eddies reveal the existence of submesoscale motions surrounding mesoscale eddies. The variables are decomposed into monthly mean meso-scale and submesoscale components to calculate submesoscale VHT at low-frequency (LF) and high-frequency (HF). The results indicate that submesoscale VHT is modulated by mesoscale eddies mainly along the eddy boundaries. The LF submesoscale VHT (upward in both cyclonic and anticyclonic eddies) dominates the monthly-averaged submesoscale VHT. The magnitude of the hourly HF submesoscale VHT is larger than the LF component, while its monthly average becomes negligible because it is caused by periodical internal waves. The submesoscale VHT along the eddy edges is related to strong frontogenesis which develops the vertical flux.
  PERGAMON-ELSEVIER SCIENCE LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.dsr2.2022.105138
  DOI ID：10.1016/j.dsr2.2022.105138, ISSN：0967-0645, eISSN：1879-0100, Web of Science ID：WOS:000842124900003
• Study of a water-soluble supramolecular complex of curcumin and beta-cyclodextrin polymer with electrochemical property and potential anti-cancer activity　　　　　　　　　　　　　　　
  Wang Zhang; Ping Xiao; Liwei Lin; Fang Guo; Qingyue Wang; Yuanzhe Piao; Guowang Diao
  CHINESE CHEMICAL LETTERS, Volume：33, Number：8, First page：4043, Last page：4047, Aug. 2022
  As a member of the curcuminoid compound family, curcumin (Cur) has many interesting therapeutic properties. However, its low aqueous solubility and stability have resulted in poor bioavailability and restricted clinical efficacy. Based on size matching, beta-cyclodextrin polymer (beta-CDP), with its hydrophilic polymer chains and hydrophobic cavities, can form an inclusion complex with Cur. To improve the water solubility and stability of Cur, a simple and eco-friendly grinding method was designed to form beta-CDP inclusion complexes. According to the Boltzmann-Hamel's method and Job's method, the molar ratio of the beta-CD unit in beta-CDP to Cur was determined to be 1:1. The diffusion coefficient and diffusion activation energy of Cur-beta-CDP were calculated in an electrochemical study. This supramolecular complex worked well in vitro to inhibit the proliferation of hepatoma carcinoma cells HepG2. Remarkably, this method visibly reduced the undesirable side effects on normal cells, without weakening the anti-cancer activity of the drugs. We expect that the obtained host-guest complex will provide a new approach for delivering natural drug molecules, having low water solubility. (C) 2021 Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences.
  ELSEVIER SCIENCE INC, English, Scientific journal
  DOI：https://doi.org/10.1016/j.cclet.2021.12.037
  DOI ID：10.1016/j.cclet.2021.12.037, ISSN：1001-8417, eISSN：1878-5964, Web of Science ID：WOS:000815135400077
• Investigation on the redox/acidic features of bimetallic MOF-derived CeMOx catalysts for low-temperature NH3-SCR of NOx　　　　　　　　　　　　　　　
  Qimin Zhou; Kailin He; Xiaoxiang Wang; Khak Ho Lim; Pingwei Liu; Wenjun Wang; Qingyue Wang
  APPLIED CATALYSIS A-GENERAL, Volume：643, Aug. 2022
  Low-temperature selective catalytic reduction with NH3 (LT-SCR) is a promising approach for NOx remediation. This work utilized bimetallic metal-organic frameworks (MOFs) to prepare CeMOx (M=Ti, Cu) catalysts allowing the homogeneous distribution of promoters to investigate LT-SCR explicitly. The strong interfacial interaction between nanoscale-mixed components was characterized on CeTiOx by HRTEM, micro-Raman, and XPS, resulting in high acidity and good redox properties with abundant Ce3+ and Ti4+. It obtained over 80% conversion from 180 degrees C to 300 degrees C with 100% N2 selectivity, and maintained stable performance in SO2/H2O at a high GHSV of 150,000 h-1. In situ DRIFTS reveals that NH3 adsorption was promoted on CeTiOx, which accelerated reaction between NOx and adsorbed NH3 via Eley-Rideal mechanism. Meanwhile, the aliovalent substitution of ceria by Cu2+ was observed on CeCuOx, forming oxygen vacancies. Its high redox properties enhanced NOx conversion by Langmuir-Hinshelwood mechanism, but triggered NH3 peroxidation, leading to poor N2 selectivity.
  ELSEVIER, English, Scientific journal
  DOI：https://doi.org/10.1016/j.apcata.2022.118796
  DOI ID：10.1016/j.apcata.2022.118796, ISSN：0926-860X, eISSN：1873-3875, Web of Science ID：WOS:000839220300002
• Adsorption of ciprofloxacin from aqueous solution by plastic-based adsorbents: a review　　　　　　　　　　　　　　　
  Christian Ebere Enyoh; Qingyue Wang
  INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY, Jul. 2022
  Plastics and antibiotics are two classes of emerging contaminants with proposed negative impacts on aqueous ecosystems. In this paper, the adsorption of Ciprofloxacin (CIP) from water in studies using plastic-based adsorbents over the last half-decade was reviewed. The objectives of this review were to 1) review the procedures in the development of plastic-based material for CIP removal; 2) review the experimental designs adopted for CIP removal by plastic-based material; 3) summarise the factors affecting the CIP adsorption behaviour of plastic-based material; 4) explore the primary mechanism by which plastic-based material adsorb CIP; 5) evaluate the reusability of the plastic-based materials and 6) identify deficiencies in existing research on the adsorption of CIP by plastic-based materials and give suggestions for further study. We observed that mainly four categories of materials have been used including native plastic-based adsorbents, chemically modified plastic-based adsorbents, high-energy physical treated plastic-based adsorbents, and plastic-based composite adsorbents. The highest removal rate was recorded for the composite (99.1%). Experimental designs are mainly batch while columns have been scantly used. Changes in the pH, contact time, initial concentration, temperature, and ionic strength also affect the adsorption capacity. The most common mechanism by which CIP was adsorbed is hydrogen bonding. Additionally, electrostatic interaction and other non-covalent forces, such as polar-polar interaction, halogen bonds, and pi-pi interactions, are also mechanisms. The majority of current research on plastic-based material adsorption behaviour is done in labs, with little in-depth investigations of the adsorption process and affecting variables. As a result, further research on the adsorption behaviour of plastic-based materials in the environment is needed, which will help to fill that gap.
  TAYLOR & FRANCIS LTD, English
  DOI：https://doi.org/10.1080/03067319.2022.2106432
  DOI ID：10.1080/03067319.2022.2106432, ISSN：0306-7319, eISSN：1029-0397, Web of Science ID：WOS:000831155200001
• Sorption of Per- and Polyfluoroalkyl Substances (PFAS) using Polyethylene (PE) microplastics as adsorbent: Grand Canonical Monte Carlo and Molecular Dynamics (GCMC-MD) studies　　　　　　　　　　　　　　　
  Christian Ebere Enyoh; Qingyue Wang; Weiqian Wang; Tanzin Chowdhury; Mominul Haque Rabin; Rezwanul Islam; Guo Yue; Lin Yichun; Kai Xiao
  INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY, May 2022
  Per- and Polyfluoroalkyl Substances (PFAS) and microplastics (MPs) removal is one of the main technical measures in these emerging pollutant control and MPs can sorb PFAS acting as carriers. In order to explore the sorption process of polyethylene (PE MPs) for different PFAS, Grand Canonical Monte Carlo and molecular dynamics simulation was used. Seven commonly found PFAS compounds including PFNA (Perfluorononanoic acid), PFHxS (Perfluorohexanesulphonic acid), PFHxA (Perfluorohexanoic acid), PFDA (Perfluorodecanoic acid), PFOS (Perfluorooctanesulfonic acid), PFBS (Perfluorobutanesulfonic acid) and Perfluorooctanoic acid (PFOA) were selected. The sorption on PE MPs was based on fixed loading and the sorption (PE MPs+PFAS) average total energy for all simulation steps followed PFHxA (-29.17 kcal/mol) < PFBS (-52.71 kcal/mol) < PFOA (-57.12 kcal/mol) < PFNA (-70.58 kcal/mol) < PFDA (-78.27 kcal/mol) < PFHxS (-80.06 kcal/mol) < PFOS (-102.30 kcal/mol). However, the binding/interaction energies followed PFHxS > PFOS > PFNA > PFDA > PFOA > PFBS > PFHxA. The MD simulation was carried out under NVT ensemble at 298 K, the thermodynamic states and relaxation pretreatment procedures were then examined quantitatively by radial distribution function, X-ray scattering, relative concentration profile, mean square displacement and space time correlation function. The results show that effective sorption of PFAS molecule by PE MPs involves hydrogen or chemical bonding as well non-bond energy such as Van der Waals (VdW), electrostatic and intramolecular energies. The cell volume did not change during single and multicomponent sorption while the sorption density increased about threefold the single component (0.36 g/cm(3)), suggesting that as the pollutant number increased the sorption capacity increased. This study showed that PE MPs can used for single and multicomponent sorption of PFASs effectively and also provided theoretical support for our knowledge of the sorption mechanism at the molecular level, which will help in better understanding of PFAS removal by MPs.
  TAYLOR & FRANCIS LTD, English, Scientific journal
  DOI：https://doi.org/10.1080/03067319.2022.2070016
  DOI ID：10.1080/03067319.2022.2070016, ISSN：0306-7319, eISSN：1029-0397, Web of Science ID：WOS:000791915700001
• Assessment of Bioaccessibility and Health Risks of Toxic Metals in Roadside Dust of Dhaka City, Bangladesh　　　　　　　　　　　　　　　
  Md Humayun Kabir; Qingyue Wang; Md Harun Rashid; Weiqian Wang; Yugo Isobe
  ATMOSPHERE, Volume：13, Number：3, Mar. 2022
  Spatial variations in the bioaccessibility and health risks induced by chromium (Cr), manganese (Mn), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), arsenic (As) and lead (Pb) in roadside dust from different land-use areas, i.e., commercial areas (CA), planned residential areas (PRA), spontaneous residential areas (SRA) and urban green areas (UGA) in Dhaka city, Bangladesh, were investigated. An in vitro simple bioaccessibility extraction test (SBET) method, which allows the simulation of the gastric (GP) and intestinal phases (IP) of human digestion, was applied to evaluate bioaccessibility and human health risk, assessed using United States Environmental Protection Agency (U.S. EPA) modelling. The average bioaccessible concentration of Zn was the highest in both the gastric (74.4-244.5 mu g/g) and intestinal phases (74.4-244.5 mu g/g) in all the land-use areas except UGA. The bioaccessibility percentages of Co and Cu in the IP phase and As in the GP phase were >40% for all the land-use categories. Carcinogenic (Cr, Ni, As and Pb) and non-carcinogenic human health risks were evaluated for the ingestion pathway, in both children and adults. The results suggest that there were no non-carcinogenic risks for adults and children exposed to roadside dust toxic metals, but the risk levels of roadside dust toxic metals in some sampling areas were high. The carcinogenic risks of Cr in SRA (for children) and Ni in CA (for both adults and children), PRA (for children) and UGA (for children) were found to be within a tolerable range of 10(-6) to 10(-4).
  MDPI, English, Scientific journal
  DOI：https://doi.org/10.3390/atmos13030488
  DOI ID：10.3390/atmos13030488, eISSN：2073-4433, Web of Science ID：WOS:000775916700001
• Comparison of the characterization of allergenic protein 3 (Pla a3) released from Platanus pollen grains collected in Shanghai during the spring of 2019 and 2020　　　　　　　　　　　　　　　
  Xingzi Wang; Shumin Zhou; Senlin Lu; Lu Zhang; Teng Ma; Xinchun Liu; Wei Zhang; Shuijun Li; Kai Xiao; Weqian Wang; Qingyue Wang
  AEROBIOLOGIA, Volume：38, Number：1, First page：23, Last page：33, Mar. 2022, ［International magazine］
  Due to the COVID-19 pandemic in early 2020, large-scale industrial production has been stagnant and reduced, the urban air quality has been greatly improved. It provided an excellent opportunity to explore the effects of air pollutants on the sensitization of pollen allergen proteins in the environment. Platanus pollen grains sampled in the spring of 2019 and 2020 were used for detailed characterization and analysis. Scanning electron microscopy, Fourier transform infrared, X-ray spectroscopy (XPS), trypan blue staining, and western blot analysis were employed to characterize Platanus pollen protein released from pollen grains. Our data showed that the viability of the pollen grains in 2019 was lower compared that in 2020, and the pollen grains collected in 2019 had a higher absorption peak of protein functional groups. The XPS spectra assay result demonstrated that the binding energy of the high-resolution components had not variation on the surface of pollen grains, but relative content of nitrogen and peptide chain in the pollen grains sampled in 2019 were higher than in 2020. These results suggested that more protein in the pollen grains was released onto the surface of pollen grains. In addition, western blot assay showed that the expression of Pla a3 protein in pollen grains sampled in 2019 was significantly higher than that in 2020, revealing that air pollutants could enhance the expression of Pla a3 proteins in Platanus pollen.
  SPRINGER, English, Scientific journal
  DOI：https://doi.org/10.1007/s10453-021-09731-6
  DOI ID：10.1007/s10453-021-09731-6, ISSN：0393-5965, eISSN：1573-3025, PubMed ID：34866768, PubMed Central ID：PMC8627293, Web of Science ID：WOS:000722998400001
• Characteristics and Risk Factors of Children Requiring Prolonged Mechanical Ventilation vs. Non-prolonged Mechanical Ventilation in the PICU: A Prospective Single-Center Study　　　　　　　　　　　　　　　
  Yanling Liu; Qingyue Wang; Jun Hu; Fang Zhou; Chengjun Liu; Jing Li; Yueqiang Fu; Hongxing Dang
  FRONTIERS IN PEDIATRICS, Volume：10, Feb. 2022
  BackgroundProlonged mechanical ventilation (PMV) has become an enormous challenge in intensive care units (ICUs) around the world. Patients treated with PMV are generally in poor health. These patients represent a select cohort with significant morbidity, mortality, and resource utilization. The status of children who have undergone PMV in China is unknown. Our goal is to investigate the prevalence and characteristics of pediatric patients with PMV, as well as the risk factors of PMV in the pediatric intensive care unit (PICU). MethodsThe subjects were divided into two groups. The PMV group(MV >= 14 days) and the non-PMV group(2 days < MV <14 days). The baseline characteristics, treatments, mortality and other results between the two groups were compared. The risk factors associated with PMV were evaluated using univariate and multivariable analyses. ResultsOf the 382 children enrolled, 127 (33.2%) received prolonged mechanical ventilation. The most common cause of MV in the PMV group was acute lung disease (48.0%), followed by acute circulatory system disease (26.0%), acute neurological disease (15.0%), postoperative monitoring (10.2%), and others (0.8%). Comorbidities were more prevalent among the PMV group (P = 0.004). The patients with PMV had a higher rate of premature birth (24.4 vs. 14.1%, P = 0.013) and higher PIM3 score at admission [5.6(3.0-9.9) vs. 4.1(1.7-5.5), P < 0.001]. The use of inotropes/vasopressors (63.8 vs. 43.1%, P < 0.001) was more common in patients with PMV compared with those in the non-PMV group. In the PMV group, the rate of extubation failure (39.4 vs. 6.7%, P < 0.001) was higher than the non-PMV group. The median hospital stay [35(23.0-50.0)d vs. 20(14.0-31.0)d, P < 0.001], PICU stay [22(15.0-33.0)d vs. 9(6.0-12.0)d, P < 0.001], hospitalization costs [ yen 391,925(263,259-614,471) vs. yen 239,497(158,723-350,620), P < 0.001], and mortality after 1-month discharge (22.0 vs. 1.6%, P < 0.001) were higher in the PMV group. Multivariate analysis revealed that age <1 year old, a higher PIM3 score at admission, prematurity, the use of inotropes or vasopressors, extubation failure, and ventilator mode on the first day of MV were associated with PMV. ConclusionsThe incidence and mortality of PMV in pediatric patients is surprisingly high. Premature infants or patients with severe disease or extubation failure are at higher risk of PMV. Patients with PMV exhibit a greater burden with regard to medical costs than those on non-PMV. It is important to establish specialized weaning units for mechanically ventilated patients with stable conditions.
  FRONTIERS MEDIA SA, English, Scientific journal
  DOI：https://doi.org/10.3389/fped.2022.830075
  DOI ID：10.3389/fped.2022.830075, ISSN：2296-2360, Web of Science ID：WOS:000760587100001
• Index models for ecological and health risks assessment of environmental micro-and nano-sized plastics　　　　　　　　　　　　　　　
  Christian Ebere Enyoh; Wang Qingyue; Andrew Wirnkor Verlal; Tanzin Chowdhury
  AIMS ENVIRONMENTAL SCIENCE, Volume：9, Number：1, First page：51, Last page：65, 2022
  The definition of environmental indexes is one of the most widely used methods and methodologies for the study of exposure to polluting agents, and it is a highly helpful instrument for describing the quality of the environment in a simple and straightforward manner. In this study, index models were presented and described that can be used in evaluating the contamination, pollution and health risks of environmental micro (MPs) and nanoplastics (NPs) to ecosystems and humans. Index models such as plastic contamination factors (pCf) and pollution load index (pPLI), plastic-bioconcentration or accumulation factors (pBCf or pBAf), plastic-biota-sediment accumulation factor (pBSAf), biota accumulation load index (BALI), polymer risks indices (pRi), polymer ecological risks index (pERI) while plastic estimated daily intake (pEDI) and plastic carcinogenic risks (pCR) were described for oral, dermal and inhalation pathways. All index modeled were further described based on polymer types of MPs/NPs. The final value is represented by a quantity that measures a weighted combination of sub-indices and defined by an appropriate mathematical function. The central concept is to present an indicator that can describe, in a clear and concise manner, the level of MPs/NPs in the environment, thereby indicating where it would be necessary to intervene and where it would not in order to improve overall environmental conditions.
  AMER INST MATHEMATICAL SCIENCES-AIMS, English, Scientific journal
  DOI：https://doi.org/10.3934/environsci.2022004
  DOI ID：10.3934/environsci.2022004, ISSN：2372-0344, eISSN：2372-0352, Web of Science ID：WOS:000748993900001
• New Analytical Approaches for Effective Quantification and Identification of Nanoplastics in Environmental Samples　　　　　　　　　　　　　　　
  Christian Ebere Enyoh; Qingyue Wang; Tanzin Chowdhury; Weiqian Wang; Senlin Lu; Kai Xiao; Md Akhter Hossain Chowdhury
  PROCESSES, Volume：9, Number：11, Nov. 2021
  Nanoplastics (NPs) are a rapidly developing subject that is relevant in environmental and food research, as well as in human toxicity, among other fields. NPs have recently been recognized as one of the least studied types of marine litter, but potentially one of the most hazardous. Several studies are now being reported on NPs in the environment including surface water and coast, snow, soil and in personal care products. However, the extent of contamination remains largely unknown due to fundamental challenges associated with isolation and analysis, and therefore, a methodological gap exists. This article summarizes the progress in environmental NPs analysis and makes a critical assessment of whether methods from nanoparticles analysis could be adopted to bridge the methodological gap. This review discussed the sample preparation and preconcentration protocol for NPs analysis and also examines the most appropriate approaches available at the moment, ranging from physical to chemical. This study also discusses the difficulties associated with improving existing methods and developing new ones. Although microscopical techniques are one of the most often used ways for imaging and thus quantification, they have the drawback of producing partial findings as they can be easily mixed up as biomolecules. At the moment, the combination of chemical analysis (i.e., spectroscopy) and newly developed alternative methods overcomes this limitation. In general, multiple analytical methods used in combination are likely to be needed to correctly detect and fully quantify NPs in environmental samples.
  MDPI, English
  DOI：https://doi.org/10.3390/pr9112086
  DOI ID：10.3390/pr9112086, eISSN：2227-9717, Web of Science ID：WOS:000724413000001
• Activation of Pt Nanoclusters on TiO2 via Tuning the Metallic Sites to Promote Low-Temperature CO Oxidation　　　　　　　　　　　　　　　
  Kailin He; Qingyue Wang
  CATALYSTS, Volume：11, Number：11, Nov. 2021
  Metallic Pt sites are imperative in the CO oxidation reaction. Herein, we demonstrate the tuning of Pt sites by treating a Pt catalyst in various reductive atmospheres, influencing the catalyst activities in low-temperature CO oxidation. The H-2 pretreatment of Pt clusters at 200 & DEG;C decreases the T-50 from 208 & DEG;C to 183 & DEG;C in the 0.1 wt % Pt/TiO2 catalyst. The T-50 shows a remarkable improvement using a CO pretreatment, which decreases the T-50 further to 135 & DEG;C. A comprehensive characterization study reveals the integrated reasons behind this phenomenon: (i) the extent of PtO transition to metallic Pt sites, (ii) the ample surface active oxygen triggered by metallic Pt, (iii) the CO selectively adsorbs on metallic Pt sites which participate in low-temperature CO oxidation, and (iv) the formation of the unstable intermediate such as bicarbonate, contributes together to the enhanced activity of CO pretreated Pt/TiO2.
  MDPI, English, Scientific journal
  DOI：https://doi.org/10.3390/catal11111280
  DOI ID：10.3390/catal11111280, eISSN：2073-4344, Web of Science ID：WOS:000725097900001
• New Approach Study on Dry Coal Cleaning System with Two-Stage Corona Electrostatic Processes for High-Sulfur Low-Grade Fine Coals　　　　　　　　　　　　　　　
  Chengyuan Liu; Qingyue Wang
  PROCESSES, Volume：9, Number：11, Nov. 2021
  Corona electrostatic separation can remove inorganic materials from coal, reduce coal ash content and sulfur content and improve coal quality, reduce air pollution caused by smoke dust, SOX, and COX. The performance of corona electrostatic separation technology in cleaning a middle ash medium-ash, high-sulfur coal was experimentally investigated. The electrode voltage, drum rotational speed, and feeding speed were tested, whereas other parameters were maintained constant during the experiment. The results indicate that the performance of this technology in cleaning medium-ash, high-sulfur coal can be improved by optimizing the process parameters. The results demonstrate that corona electrostatic separation is effective for the beneficiation of this grade coal. In addition, the efficiency of coal cleaning is significantly improved by adding the second stage beneficiation to clean the middlings out from the first stage beneficiation. In this study, the first stage of beneficiation recovered 38.00% (by weight) of clean coal (ash content below 20%), and the second stage recovered 48.58% (by weight) of clean coal, improving the overall separation efficiency from 0.69 to 1.74. Furthermore, the sulfur content was reduced from 4.71% (raw coal) to 3.53% (clean coal). Our result show that corona electrostatic separation can effectively reject inorganic sulfur from raw coal, and the two-stage separate is also very helpful for coal purification.
  MDPI, English, Scientific journal
  DOI：https://doi.org/10.3390/pr9111915
  DOI ID：10.3390/pr9111915, eISSN：2227-9717, Web of Science ID：WOS:000724616300001
• Industrial Source Contributions and Health Risk Assessment of Fine Particle-Bound Polycyclic Aromatic Hydrocarbons (PAHs) during Spring and Late Summer in the Baoshan Area, Shanghai　　　　　　　　　　　　　　　
  Weiqian Wang; Qingyue Wang; Daisuke Nakajima; Senlin Lu; Kai Xiao; Tanzin Chowdhury; Miho Suzuki; Fenwu Liu
  PROCESSES, Volume：9, Number：11, Nov. 2021
  The main objective of this study was to examine the chemical characteristics, possible sources, and health risks of fine particle-bound Polycyclic Aromatic Hydrocarbons (PAHs) in the Baoshan area of Shanghai. Here, ambient particles with five-size ranges were collected during the spring and late summer of 2017. The PAHs were determined by the Gas Chromatography-Mass Spectrometry (GC-MS). Our results showed that the average mass concentration of 13 species of PAHs in spring and in late summer was 4.83 (1.88 similar to 12.1) ng/m(3) and 4.27 (2.09 similar to 5.75) ng/m(3) in Total Suspended Particles (TSPs), respectively. The higher PAH ratios (PM1.1/TSPs) indicated that PAHs are mainly concentrated in PM1.1, especially in late summer. The values of BaA/(BaA+CHR) were under 0.50 and IcdP/(IcdP+BghiP) were in range from 0.20 to 0.50 for TSP and PM1.1, suggesting that petroleum combustion and diesel emissions could be considered as key sources of PAHs, which tend to be associated with PM1.1. Moreover, the Principal Component Analysis (PCA) in PM1.1 identified the main PH sources, which include stationary and diesel emissions. The air mass backward trajectories and wind direction analysis showed that air masses were mainly derived from marine sources across the local industry area in late summer. Individual Carcinogenic Risk Inhalation (ILCR) was over 10(-6) among the total six age groups in both of the sampling periods in TSPs, indicating the possible carcinogenic risk, especially for children and the young age group. Toxic PAHs belong to Heavy Molecular Weight (HMW) PAHs, especially Benzo[a]pyrene (BaP). Compared with PM1.1-2.0, the Combustion-Derived PAHs group (COMPAHs) and Carcinogenic PAHs (CANPAHs) were highly concentrated in PM1.1. Stationary sources, such as the developed steel industry, made a great contribution to the level of PAHs, especially in late summer.
  MDPI, English, Scientific journal
  DOI：https://doi.org/10.3390/pr9112016
  DOI ID：10.3390/pr9112016, eISSN：2227-9717, Web of Science ID：WOS:000726025700001
• Characteristics and Potential Inhalation Exposure Risks of Environmentally Persistent Free Radicals in Atmospheric Particulate Matter and Solid Fuel Combustion Particles in High Lung Cancer Incidence Area, China　　　　　　　　　　　　　　　
  Kai Xiao; Yichun Lin; Qingyue Wang; Senlin Lu; Weiqian Wang; Tanzin Chowdhury; Christian Ebere Enyoh; Mominul Haque Rabin
  ATMOSPHERE, Volume：12, Number：11, Nov. 2021
  Environmentally persistent free radicals (EPFRs) were previously considered an unrecognized composition of air pollutants and might help explain the long-standing medical mystery of why non-smokers develop tobacco-related diseases such as lung cancer. However, there is no investigated on EPFRs in Xuanwei rural areas, especially in high prevalence of lung cancer areas. In this study, we selected six types of coal and three types of biomass in Xuanwei, then conducted simulated combustion, and six group of atmospheric particulate matters (APMs) to explore the content and particle size distribution pattern of EPFRs and a new health risk assessment method to evaluate the risk of EPFRs in PM for adults and children. Our results show that the contribution of EPFRs for biomass combustion, coal combustion and APMs were mainly distributed in the size range of < 1.1 mu m, which accounted for 76.15 & PLUSMN; 4.14%, 74.85 & PLUSMN; 10.76%, and 75.23 & PLUSMN; 8.18% of PM3.3. The mean g factors and & UDelta;Hp-p indicated that the EPFRs were mainly oxygen-centered radicals in PM in Xuanwei. The results suggest that the health risk of EPFRs is significantly increased when the particle size distribution of EPFRs is taken into account, and coal combustion particulate matter (174.70 & PLUSMN; 37.86 cigarettes for an adult, 66.39 & PLUSMN; 14.39 cigarettes per person per year for a child) is more hazardous to humans than biomass combustion particulate matter (69.41 & PLUSMN; 4.83 cigarettes for an adult, 26.37 & PLUSMN; 1.84 cigarettes per person per year for), followed by APMs (102.88 & PLUSMN; 39.99 cigarettes for an adult, 39.10 & PLUSMN;15.20 cigarettes per person per year for) in PM3.3. Our results provides a new perspective and evidence for revealing the reason for the high incidence of lung cancer in Xuanwei, China.
  MDPI, English, Scientific journal
  DOI：https://doi.org/10.3390/atmos12111467
  DOI ID：10.3390/atmos12111467, eISSN：2073-4433, Web of Science ID：WOS:000724728700001
• Determination of Heavy Metal Contamination and Pollution Indices of Roadside Dust in Dhaka City, Bangladesh　　　　　　　　　　　　　　　
  Md Humayun Kabir; Md Harun Rashid; Qingyue Wang; Weiqian Wang; Senlin Lu; Shinichi Yonemochi
  PROCESSES, Volume：9, Number：10, Oct. 2021
  Urban roadside dust samples from Dhaka City in Bangladesh were collected from a planned residential area (PRA), spontaneous residential area (SRA), commercial area (CA), and urban green area (UGA) in winter and summer to study how season and different urban land-use categories influence the concentrations of heavy metals (Cr, Mn, Co, Ni, Cu, Zn, As, and Pb) and different pollution indices. The dust samples were fractionated into mu m particles, extracted by acid digestion followed by estimation of heavy metals, using ICP-MS. Pollution indices were calculated from the metal concentrations, using standard protocols. The concentrations of heavy metals in roadside dust varied significantly (all p < 0.05), due to sampling seasons and the land-use category. Higher concentrations of heavy metals (Cr, Mn, Ni, Cu, Zn, and Pb) were found in the dust sampled during the winter season than in the summer season, except for As and Co. The geo-accumulation index (Igeo) indicated that the commercial area was heavily contaminated with Cu and Zn during the winter season. The contamination factor (CF) was higher for Cu and Zn in the CA, PRA, and SRA of Dhaka City in winter than in the summer season. The enrichment factor (EF) suggested that Mn and Co were the least enriched metals, and significant enrichment was seen for Cu and Zn for all land-use categories, both in summer and winter. A moderate potential ecological risk for Cu was estimated in CA and PRA in the winter season.

  
  MDPI, English, Scientific journal
  DOI：https://doi.org/10.3390/pr9101732
  DOI ID：10.3390/pr9101732, eISSN：2227-9717, Web of Science ID：WOS:000711680800001
• "Plasti-remediation": Advances in the potential use of environmental plastics for pollutant removal　　　　　　　　　　　　　　　
  Christian Ebere Enyoh; Franklyn Okechukwu Ohiagu; Andrew Wirnkor Verla; Qingyue Wang; Leila Shafea; Evelyn Ngozi Verla; Beniah Obinna Isiuku; Tanzin Chowdhury; Francis Chizoruo Ibe; Md Akhter Hossain Chowdhury
  ENVIRONMENTAL TECHNOLOGY & INNOVATION, Volume：23, Aug. 2021
  Plastic wastes are introduced into the environment inevitably and their exposure in the environment causes deterioration in its mechanical and physicochemical properties. This leads to the formation of plastic fragments, which are considered as micro and nano plastics when their size is <5 mm and < 10 nm. In recent years, plastic pollution has been reported in all kinds of environments worldwide and is considered a threat to the health of the ecosystem and humans. Besides, plastics serve as vectors for pollutants as they are capable of adsorbing and accumulating pollutants from seawater. However, this particular ability exposes the tendency of exploiting plastic waste as an adsorbent for removing pollutants from polluted water. Considering the problems caused by plastic waste to ecosystems, this concept is very interesting and attractive as a way to protect the environment by recycling or reusing plastic wastes as novel low-cost adsorbents. Meanwhile, studies have begun to exploit and understand the concept of using plastic waste as an adsorbent to remove diverse pollutants such as heavy and radioactive metals, persistent organic pollutants, dyes and oils from aqueous solutions as well as gases e.g volatile organic compounds (VOCs), carbon dioxide (CO2) and hydrogen (H-2). This paper, therefore, provides an overview of studies, highlighting the process of adsorbent preparation, plastic/pollutant interaction mechanisms (including kinetic and isotherm models), and factors influencing the removal rates and desorption of pollutants and reusability of the plastic-based adsorbent. Diverse pollutants such as heavy and radioactive metals, persistent organic pollutants, dyes and oils from aqueous solutions as well as gases e.g volatile organic compounds (VOCs), carbon dioxide (CO2) and hydrogen (H-2) have been removed by plastic based adsorbent with the modified ones showing higher removal capacity. Desorption and reusability studies have shown that the plastic based adsorbent is re-generable and stable for dyes and heavy metals (e.g. Pb2+) with high desorption rate (> 80 %) while for low (< 40 %) for phenathrene. Applying plastic waste is a novel potential way of pollutant removal from the environment and therefore a facile sustainable approach. However, the optimization of the method considering the factors affecting the removal rate as well as characterizing the plastic absorbents before and after pollutant adsorption should be conducted. This will help in understanding the possibility of using this concept for field applications. (C) 2021 Elsevier B.V. All rights reserved.
  ELSEVIER, English, Scientific journal
  DOI：https://doi.org/10.1016/j.eti.2021.101791
  DOI ID：10.1016/j.eti.2021.101791, ISSN：2352-1864, Web of Science ID：WOS:000685017000008
• A Robust Cu Catalyst for Low-Temperature CO Oxidation in Flue Gas: Mitigating Deactivation via Co-Doping　　　　　　　　　　　　　　　
  Kailin He; Qingyue Wang; Jinchao Wei
  CATALYSIS LETTERS, Volume：151, Number：8, First page：2302, Last page：2312, Aug. 2021
  CuCeTiOx (CCT) catalyst is considered as a promising prospect attributable to their high activity for low-temperature CO oxidation. However, rapid deactivation when treating humid flue gas hindered their industrial exploitation. The hydroxide ion (OH-) dissociated from H2O, and carbonate intermediates derived from CO/CO2 deposited on the catalyst surface of CCT catalyst, inhibits the CO oxidation by surface oxygen on active sites. In this study, the detrimental effect caused by H2O and CO2 were evaluated, and the performance of CCT catalysts were investigated and compared using in situ DRIFTs study. Further, intentional doping on the CCT using transition metal (e.g., Co and Mn) was performed to mitigate the catalyst deactivation caused by H2O and CO2. The incorporation of cobalt in Co-CCT altered the reaction pathway and mitigated the deactivation via enhancing the consumption of surface adsorbed OH- by CO, reducing the occupancy of active sites. Also, preferential adsorption of CO further suppressed the competition of OH- and CO2 towards active sites on catalyst attributable to the abundant oxygen vacancies and low coordinated metal (i.e., Cu+, Ce3+) in Co-CCT, which significantly enhanced the resistance to H2O and CO2 in the flue gas. This work thoroughly analyzed the mechanism of H2O and CO2 impacting the catalyst activity during low-temperature CO oxidation, is able to provide innovative insights for the design of highly-active and long-shelf life catalysts.Graphic Abstract The incorporation of cobalt in CuCeTiOx catalyst facilitates the formation of oxygen vacancies, the adsorption of CO, and the consumption of OH-, speeding up the CO oxidation to CO2 and promoting the resistance to deactivation caused by H2O and CO2 in the flue gas.[GRAPHICS].
  SPRINGER, English, Scientific journal
  DOI：https://doi.org/10.1007/s10562-020-03471-x
  DOI ID：10.1007/s10562-020-03471-x, ISSN：1011-372X, eISSN：1572-879X, Web of Science ID：WOS:000604191700007
• Preparation and Evaluation of Epoxy Resin Prepared from the Liquefied Product of Cotton Stalk　　　　　　　　　　　　　　　
  Nuerjiamali Tuohedi; Qingyue Wang
  PROCESSES, Volume：9, Number：8, Aug. 2021
  Liquefaction of waste lignocellulosic biomass is a viable technology for replacing fossil fuels and meeting sustainable development goals. In this study, bio-based epoxy resins were prepared from polyhydric-alcohol-liquefied cotton stalk by glycidyl etherification. The cotton stalk was liquefied in a polyethylene glycol/glycerol cosolvent under H2SO4 catalysis. Epon 828 and cotton-stalk-based epoxy resins could be cured using methylhexahydrophthalic anhydride as the curing agent, and the curing process was exothermic. The thermal properties and tensile strength of cured resins were investigated to examine the effect of adding cotton-stalk-based resin on the performance of the copolymerized epoxy resin. Further, the liquefied-cotton-stalk-based epoxy resin was blended with Epon 828 at different ratios (10, 20, and 30 mass%) and cured with a curing agent in the presence of 2-methylimidazole catalyst. An increase in the peak temperature and a reduction in the heat of curing and activation energy of the Epon 828 epoxy resin was observed with increasing content of the cotton-stalk-based epoxy resin. The tensile strength (35.4 MPa) and elastic modulus (1.5 GPa) of the highly crosslinked cotton-stalk-based epoxy resin were equivalent to those of the petroleum-based epoxy resin Epon 828.
  MDPI, English, Scientific journal
  DOI：https://doi.org/10.3390/pr9081417
  DOI ID：10.3390/pr9081417, eISSN：2227-9717, Web of Science ID：WOS:000690061300001
• Nutrient uptake and pharmaceutical compounds of Aloe vera as influenced by integration of inorganic fertilizer and poultry manure in soil　　　　　　　　　　　　　　　
  Tanzin Chowdhury; Md Akhter Hossain Chowdhury; Wang Qingyue; Christian Ebere Enyoh; Weiqian Wang; Md Sirajul Islam Khan
  HELIYON, Volume：7, Number：7, First page：e07464, Jul. 2021, ［International magazine］
  Aloe vera had been used for numerous medical and cosmetic applications since ancient times. The study aimed to investigate the integrated effects of inorganic fertilizer (IF) and poultry manure (PM) on the nutritional and pharmaceutical constituents of A. vera. Eighteen month old A. vera seedlings were used following completely randomized design with three replications. Six combinations of IF [Nitrogen (N), phosphorus (P), potassium (K) and sulphur (S) at the rate of 150, 80, 120 and 30 kg h(-1), respectively] and PM (at the rate of 5 t ha(-1)) were considered viz., IF00PM00 (IF = 0%, PM = 0%), IF100PM00(IF = 100%, PM = 0%), IF75PM25 (IF = 75%, PM = 25%), IF50PM50 (IF = 50%, PM = 50%), IF25PM75 (IF = 25%, PM = 75%) and IF00PM100 (IF = 0%, PM = 100%) as treatments. Different treatment combinations of IF and PM exerted significant influence on the nutritional and pharmaceutical contents of A. vera. Concentrations and uptake of the concerned nutrients were gradually increased with the increased levels of PM except NPKS which were highest in sole application of IF. The aloin concentration of leaf was gradually increased with the increased level of PM and by 42.44% over control. The highest chlorophyll, total phenolic and flavonoid concentrations were found in the plants receiving the treatment IF25PM75 except protein content which was obtained from IF100PM00. Significant and positive relationships between N and S with P concentrations and P and S with K concentrations of A. vera leaf were noticed. Aloin, total phenolic and flavonoid concentrations were significantly and positively correlated with Mg, Fe and Mn concentrations of A. vera leaf. Farmers may be advised to cultivate A. vera applying 75% PM at the rate of 5 t ha(-1) along with 25% IF (N, P, K and S at the rate of 150, 80, 120 and 30 kg ha(-1), respectively) for obtaining better quality leaf in terms of nutrients and pharmaceutical compounds under the agro-climatic conditions of the study area.
  ELSEVIER SCI LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.heliyon.2021.e07464
  DOI ID：10.1016/j.heliyon.2021.e07464, eISSN：2405-8440, PubMed ID：34278036, PubMed Central ID：PMC8264604, Web of Science ID：WOS:000700484300035
• Study on Electrostatic Preparation High-Ash Coal from China Using Roll-Type Electrostatic Separator and the Combustion Characteristics of the Cleaned Coal　　　　　　　　　　　　　　　
  Chengyuan Liu; Qingyue Wang
  PROCESSES, Volume：9, Number：7, Jul. 2021
  The dry roll-type electrostatic coal beneficiation technology under high voltage is used to study the beneficiation of low-grade and high-ash coal in Inner Mongolia, northern China. The optimal coal beneficiation conditions are determined by adjusting three parameters: the electrode voltage, the distance between the electrode and the drum, and the angle theta of the electrode. The best quality clean coal is obtained under the condition of voltage of 30 kV, angle theta of 75 degrees, and electrode distance of 7 cm. Moreover, after separation, the quality of clean coal accounted for 48.41% of the raw coal mass, while the ash ratio decreased from 38.6% of the raw coal to 18.71% of the clean coal, which significantly improves the coal usability. Finally, through the methods of combustion characteristics analysis, infrared spectrum analysis, and combustion exhaust gas analysis of raw and clean coal, it is proven that the roll-type electrostatic separation technology has a high coal beneficiation effect on the high-ash, low-grade coal in Inner Mongolia.
  MDPI, English, Scientific journal
  DOI：https://doi.org/10.3390/pr9071139
  DOI ID：10.3390/pr9071139, eISSN：2227-9717, Web of Science ID：WOS:000677071600001
• Numerical study of the seasonal salinity budget of the upper ocean in the Bay of Bengal in 2014　　　　　　　　　　　　　　　
  Qingyue Wang; Changming Dong; Junde Li; Jingsong Yang; Qing Tian
  JOURNAL OF OCEANOLOGY AND LIMNOLOGY, Volume：39, Number：4, First page：1169, Last page：1187, Jul. 2021
  Impact factors on the salinity budget, especially the eddy salt fluxes and smaller-scale diffusive salt fluxes for the upper 50 m of the Bay of Bengal (BoB) in 2014 are investigated using a box model based on the Regional Ocean Modeling System (ROMS) daily outputs. The model results reproduce that the precipitation and river runoffs are the dominant factors modulating the sharp salinity decrease during the summer monsoon season. The analysis shows that the salinity increase after the summer monsoon is mostly due to the meridional advective and diffusive salt fluxes. The vertical advective salt flux, which is sensitive to the different signals of the wind stress curl, plays an important role in balancing the salinity change induced by the meridional advective salt flux during both the summer and winter monsoon seasons. Distinctive spatial mesoscale structures are presented in the eddy salt flux throughout the year, and their contributions are sizeable (over 30% in the meridional direction and about 10%-30% in the vertical direction). The meridional eddy salt flux is larger in the monsoon seasons than that in the inter-monsoon seasons, and in a positive pattern near the western boundary during the winter monsoon and autumn inter-monsoon. The vertical eddy salt flux makes an important contribution to the salinity budget, especially along the coastal area and around the Andaman and Nicobar Islands. The vertical eddy salt flux becomes large when a tropical cyclone passes the area.
  SCIENCE PRESS, English, Scientific journal
  DOI：https://doi.org/10.1007/s00343-020-0285-1
  DOI ID：10.1007/s00343-020-0285-1, ISSN：2096-5508, eISSN：2523-3521, Web of Science ID：WOS:000644773700001
• Approval Research for Carcinogen Humic-Like Substances (HULIS) Emitted from Residential Coal Combustion in High Lung Cancer Incidence Areas of China　　　　　　　　　　　　　　　
  Kai Xiao; Qingyue Wang; Yichun Lin; Weiqian Wang; Senlin Lu; Shinich Yonemochi
  PROCESSES, Volume：9, Number：7, Jul. 2021
  The incidence and mortality rate of lung cancer is the highest in Xuanwei County, Yunnan Province, China. The mechanisms of the high lung incidence remain unclear, necessitating further study. However, the particle size distribution characteristics of HULIS emitted from residential coal combustion (RCC) have not been studied in Xuanwei. In this study, six kinds of residential coal were collected. Size-resolved particles emitted from the coal were sampled by using a burning system, which was simulated according to RCC made in our laboratory. Organic carbon (OC), elemental carbon (EC), water-soluble inorganic ion, water-soluble potentially toxic metals (WSPTMs), water-soluble organic carbon (WSOC), and HULIS-C (referred to as HULIS containing carbon contents) in the different size-segregated particulate matter (PM) samples were determined for health risk assessments by inhalation of PM. In our study, the ratio of HULIS-Cx to WSOCx values in RCC particles were 32.73-63.76% (average 53.85 +/- 12.12%) for PM2.0 and 33.91-82.67% (average 57.06 +/- 17.32%) for PM2.0 similar to 7.0, respectively. The carcinogenic risks of WSPTMs for both children and adults exceeded the acceptable level (1 x 10(-6), indicating that we should pay more attention to these WSPTMs). Exploring the HULIS content and particle size distribution of the particulate matter produced by household coal combustion provides a new perspective and evidence for revealing the high incidence of lung cancer in Xuanwei, China.
  MDPI, English, Scientific journal
  DOI：https://doi.org/10.3390/pr9071254
  DOI ID：10.3390/pr9071254, eISSN：2227-9717, Web of Science ID：WOS:000677155300001
• Dissolution factors and oxidative potential of acid soluble irons from chlorite mineral particles　　　　　　　　　　　　　　　
  Tingting Xie; Senlin Lu; Lanfang Rao; Luying Zhang; Xingzi Wang; Weiqian Wang; Qingyue Wang
  ATMOSPHERIC ENVIRONMENT, Volume：255, Jun. 2021
  Soluble irons from aerosol particles play a key role in assessment of biological and toxicological effects as a result of their oxidative potential. Several factors are responsible for controlling the solubility of irons released from aerosol mineral particles in acid solution. Here, factors of H+ concentrations, temperatures, solid-liquid ratios and particle sizes on acidsoluble irons from chlorite mineral particles were investigated in 48h. Our data demonstrated that the higher acidity, higher temperature, lower solid-liquid ratio, and smaller particle size were factors that positively influenced the solubility of FeT and Fe(II), and that the higher acidity, lower temperature, higher solid-liquid ratio, and smaller particle size positively improved the solubility of Fe(III). Fe(II) dissolved more easily than Fe(III) in the acid solution under all conditions; the percentage of Fe(III) among the total iron released from chlorite particles could be promoted by increasing the acidity, solid-liquid ratio, and particle size, or by lowering the temperature. In this acidolysis process, there is a clear order of importance of these influencing factors, H+ concentrations > particle sizes > temperatures and solid-liquid ratios. In addition, the dissolution data for FeT at pH = 0.7 and pH = 1 in 48 h could be well described and predicted by non-linear fitting with r2 > 0.99 according to continuous dissolution model. And the analysis of oxidative potential showed that Fe(II) dissolved from chlorite possessed a dominant position in generating reactive oxygen species.
  PERGAMON-ELSEVIER SCIENCE LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.atmosenv.2021.118436
  DOI ID：10.1016/j.atmosenv.2021.118436, ISSN：1352-2310, eISSN：1873-2844, Web of Science ID：WOS:000663138200006
• Characterization of allergenicity of Platanus pollen allergen a 3 (Pla a 3) after exposure to NO2 and O-3　　　　　　　　　　　　　　　
  Shumin Zhou; Xingzi Wang; Senlin Lu; Chuanhe Yao; Luying Zhang; Lanfang Rao; Xinchun Liu; Wei Zhang; Shuijun Li; Weiqian Wang; Qingyue Wang
  ENVIRONMENTAL POLLUTION, Volume：278, First page：116913, Last page：116913, Jun. 2021, ［International magazine］
  Pollen allergens, widely present in the atmosphere, are the main cause of seasonal respiratory diseases that affect millions of people worldwide. Although previous studies have reported that nitrogen dioxide (NO2) and ozone (O-3) promote pollen allergy, the specific biological processes and underlying mechanisms remain less understood. In this study, Platanus pollen grains were exposed to gaseous pollutants (NO2 and O-3). We employed environmental electron microscopy, flow cytometry, western blot assay, enzyme-linked immunoassay, ultraviolet absorption spectrometry, circular dichroism, and protein mass spectrometry to characterise the subpollen particles (SPPs) released from pollen grains. Furthermore, we determined the immunogenicity and pathogenicity induced by Platanus pollen allergen a 3 (Pla a 3). Our results demonstrated that NO2 and O-3 could damage the pollen cell membranes in SPPs and increase the amount of Pla a 3 allergen released into the atmosphere. Additionally, NO2 and O-3 altered the structure of Pla a3 protein through nitrification and oxidation, which not only enhanced the immunogenicity of allergens but also increased the stability of the protein. In vivo analysis using an animal model indicated that NO2 and O-3 greatly aggravated pollen-induced pneumonia. Thus, our study provides guidance for the prevention of pollen allergic diseases. (C) 2021 Elsevier Ltd. All rights reserved.
  ELSEVIER SCI LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.envpol.2021.116913
  DOI ID：10.1016/j.envpol.2021.116913, ISSN：0269-7491, eISSN：1873-6424, PubMed ID：33735791, Web of Science ID：WOS:000641372900012
• A supramolecular complex of hydrazide-pillar[5]arene and bisdemethoxycurcumin with potential anti-cancer activity　　　　　　　　　　　　　　　
  Fang Guo; Tao Xia; Ping Xiao; Qingyue Wang; Zhitong Deng; Wang Zhang; Guowang Diao
  BIOORGANIC CHEMISTRY, Volume：110, May 2021
  Pillar[5]arene complexes of the naturally occurring compound bisdemethoxycurcumin (BDMC) were acquired for improving the water solubility and stability of BDMC. As a family member of curcuminoid compounds, BDMC has many interesting therapeutic properties. However, its low aqueous solubility and stability resulted in poor availability and restricted the clinical efficacy. Pillar[5]arenes with hydrophilic ends and a hydrophobic cavity could include with BDMC based on size matching. The synthesized hydrazide-pillar[5]arene (HP5A) and BDMC had a strong host?guest interaction with a 1:1 binding stoichiometry. Furthermore, the HP5A ? BDMC complex could self-assemble into well-defined fibers in water/ethanol solution. This supramolecular complex worked well in vitro for inhibiting the proliferation of hepatoma carcinoma cells HepG2. Remarkably, this method of complexation with pillar[5]arenes visibly reduced the undesirable side effects on normal cells without weakening the anti-cancer activity of the drugs. We expected that the obtained host?guest complex and fibrous assembly would provide a promising platform for delivering drugs with low water solubility.
  ACADEMIC PRESS INC ELSEVIER SCIENCE, English, Scientific journal
  DOI：https://doi.org/10.1016/j.bioorg.2021.104764
  DOI ID：10.1016/j.bioorg.2021.104764, ISSN：0045-2068, eISSN：1090-2120, Web of Science ID：WOS:000643758600010
• Study on the Characteristics of Size-Segregated Particulate Water-Soluble Inorganic Ions and Potentially Toxic Metals during Wintertime in a High Population Residential Area in Beijing, China　　　　　　　　　　　　　　　
  Kai Xiao; Ao Qin; Weiqian Wang; Senlin Lu; Qingyue Wang
  PROCESSES, Volume：9, Number：3, Mar. 2021
  Airborne particulate matter (PM) pollution often occurs in the wintertime in northern China, posing a potential threat to human health. To date, there are limited studies about the metals and inorganic ions to link source apportionments and health risk assessments in the different size-segregated PM samples. In this study, our samples were collected by a high-volume air sampler from 26 December 2018 to 11 January 2019 in a high population residential area (Beijing). Water-soluble inorganic ions, metal elements in the different size-segregated PM samples were determined for health risk assessments by inhalation of PM. During the sampling period in Beijing, the average concentrations of PM1.1 and PM1.1-2.0 were 39.67 +/- 10.66 mu g m(-3) and 32.25 +/- 6.78 mu g m(-3). Distinct distribution profiles characterized the different elements. The markers of coal combustion Pb, As, and Se had >52% of their mass concentration in PM1.1. The average mass ratios of (NO3- + NO2-)/SO42-, Cl-/Na+, Cl-/K+, and Cl-/(NO3- + NO2-) were 1.68, 6.58, 6.18, and 0.57, which showed that coal combustion and vehicle emissions were the main anthropogenic sources of PM in Beijing in winter. PM1.1 was the major contributor of Pb, Cd, and As for carcinogenic risks (CR) and hazard quotient (HQ). It was indicated that PM1.1 is more harmful than coarse PM. The toxic elements of Cr (VI) (1.12 x 10(-6)), V (0.69 x 10(-6)), and As (0.41 x 10(-6)) caused higher CR for children than Ni, Cd, Co, and Pb. Meanwhile, Pb (35.30 x 10(-6)) and Ni (21.07 x 10(-6)) caused higher CR for adults than As, Cr (VI), V, Co, and Cd, especially PM1.1. This study provides detailed composition data and the first report on human health in a high population residential area in Beijing.
  MDPI, English, Scientific journal
  DOI：https://doi.org/10.3390/pr9030552
  DOI ID：10.3390/pr9030552, eISSN：2227-9717, Web of Science ID：WOS:000634200300001
• Ambient particulate matter-associated autophagy alleviates pulmonary inflammation induced by Platanus pollen protein 3 (Pla3)　　　　　　　　　　　　　　　
  Zhou Shumin; Zhang Luying; Lu Senlin; Peng Jiaxian; Li Yang; Rao Lanfang; Xie Tingting; Zhang Wei; Li Shuijun; Wang Weqian; Wang Qingyue
  SCIENCE OF THE TOTAL ENVIRONMENT, Volume：758, Mar. 2021
  Subpollen particles (SPPs) with diameter less than 1 mm released from allergenic pollen grains contain allergens could trigger asthma and lung inflammation after being inhaled. In the meaning time, ambient fine particles attached on the pollen grains could have further effects on the inflammation. However, the mechanisms underlying these phenomena have not been fully elucidated. In this study, the effects of autophagy triggered by PM2.5 and Platanus SPPs were evaluated by using the A549 cell lines and a pollen sensitized rat model. First, autophagy in A549 cells was analyzed after exposure to PM2.5 using acridine orange staining, real-time quantitative PCR (qRT-PCR), and western blot (WB) assays. The increased levels of ROS, superoxide dismutase, and malonaldehyde in the lung homogenates of rats exposed to SPPs indicated that inflammatory response was triggered in the lungs. Treatment with autophagy-inhibiting drugs showed that autophagy suppressed ROS formation and decreased the production of thymic stromal lymphopoietin (TSLP), a critical pathway altering the inflammatory response. Although the effect was indirect, autophagy appeared to negatively regulate TSLP levels, resulting in a compromised immune response. These results suggested that SPPs promote ROS generation and increase TSLP levels, triggering downstreaminflammation reactions. However, ambient PM2.5 could aggravate autophagy, which in turn effectively suppressed ROS and TSLP levels, leading to the alleviation of the immune response and pulmonary inflammation. (C) 2020 Elsevier B.V. All rights reserved.
  ELSEVIER, English, Scientific journal
  DOI：https://doi.org/10.1016/j.scitotenv.2020.143696
  DOI ID：10.1016/j.scitotenv.2020.143696, ISSN：0048-9697, eISSN：1879-1026, Web of Science ID：WOS:000605623800099
• Operando Investigation of Toluene Oxidation over 1D Pt@CeO2 Derived from Pt Cluster-Containing MOF　　　　　　　　　　　　　　　
  Qingyue Wang; Yuxin Li; Ana Serrano-Lotina; Wei Han; Raquel Portela; Ruixuan Wang; Miguel A. Banares; King Lun Yeung
  JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Volume：143, Number：1, First page：196, Last page：205, Jan. 2021
  A unique 1D nanostructure of Pt@CeO2-BDC was prepared from Pt@CeBDC MOF. The Pt@CeO2-BDC was rich in oxygen vacancies (i.e., XPS O-beta/(O-alpha + O-beta) = 39.4%), and on the catalyst, the 2 nm Pt clusters were uniformly deposited on the 1D mesoporous polycrystalline CeO2. Toluene oxidation was conducted in a spectroscopic operando Raman-online FTIR reactor to elucidate the reaction mechanism and establish the structure-activity relationship. The reaction proceeds as follows: (I) adsorption of toluene as benzoate intermediates on Pt@CeO2-BDC at low temperature by reaction with surface peroxide species; (II) reaction activation and ring-opening involving lattice oxygen with a concomitant change in defect densities indicative of surface rearrangement; (III) complete oxidation to CO2 and H2O by lattice oxygen and reoxidation of the reduced ceria with consumption of adsorbed oxygen species. The Pt clusters, which mainly exist as Pt2+ with minor amounts of Pt-0 and Pt4+ on the surface, facilitated the adsorption and reaction activation. The Pt-CeO2 interface generates reduced ceria sites forming nearby adsorbed peroxide at low temperature that oxidize toluene into benzoate species by a Langmuir-Hinshelwood mechanism. As the reaction temperature increases, the role of lattice oxygen becomes important, producing CO2 and H2O mainly by the Mars-van Krevelen mechanism.
  AMER CHEMICAL SOC, English, Scientific journal
  DOI：https://doi.org/10.1021/jacs.0c08640
  DOI ID：10.1021/jacs.0c08640, ISSN：0002-7863, eISSN：1520-5126, Web of Science ID：WOS:000611083700028
• Incorporating Specific Knowledge into End-to-End Task-oriented Dialogue Systems　　　　　　　　　　　　　　　
  Qingyue Wang; Yanan Cao; Junyan Jiang; Yafang Wang; Lingling Tong; Li Guo
  2021 INTERNATIONAL JOINT CONFERENCE ON NEURAL NETWORKS (IJCNN), 2021
  External knowledge is vital to many natural language processing tasks. However, current end-to-end dialogue systems often struggle to interface knowledge bases(KBs) with response smoothly and effectively. In this paper, we convert the raw knowledge into relation knowledge and integrated knowledge and then incorporate them into end-to-end task-oriented dialogue systems. The relation knowledge extracted from knowledge triples is combined with dialogue history, aiming to enhance semantic inputs and support better language understanding. Integrated knowledge involves entities and relations by graph attention, assisting the model in generating informative responses. The experimental results on three public dialogue datasets show that our model improves over the previous state-of-the-art models in sentence fluency and informativeness.
  IEEE, English, International conference proceedings
  DOI：https://doi.org/10.1109/IJCNN52387.2021.9533938
  DOI ID：10.1109/IJCNN52387.2021.9533938, ISSN：2161-4393, Web of Science ID：WOS:000722581705018
• Nitrogen use efficiency and critical leaf N concentration of Aloe vera in urea and diammonium phosphate amended soil　　　　　　　　　　　　　　　
  Md. Akhter Hossain Chowdhury; Taslima Sultana; Md. Arifur Rahman; Tanzin Chowdhury; Christian Ebere Enyoh; Biplob Kumar Saha; Wang Qingyue
  HELIYON, Volume：6, Number：12, Dec. 2020
  Aloe vera L. is widely cultivated in many countries due to its importance as an all-purpose herbal or medicinal plant. The growth and yield of this plant can be enhanced by application of fertilizer. It is expected that a higher and balanced nutrient supply will result in higher crop production maintaining soil health, which is possible when the applied fertilizers are done in way that is efficient. So, there is a need to understand the amount of applied and type of fertilizer that will give the best output for farmers and to formulate economical market products. This study was conducted to investigate the effect of N fertilizer on leaf yield, its uptake and requirement, critical concentration, use efficiency and economics of Aloe vera L. Plants were grown at six levels of N: 0, 40, 80, 100, 150 and 200 kg ha(-1) from urea and diammonium phosphate (DAP) following completely randomized design with three replicates under field condition. The highest values of yield and yield attributes and profit based on benefit cost ratio (3.81 for urea and 2.91 for DAP) were obtained with 150 kg N ha(-1) (urea) and 100 kg N ha(-1) (DAP). Leaf biomass yield increased by 18-128 % in urea-N and 30-139 % in DAP-N fertilized plant over control while DAP > urea by 7.59 %. Sucker production (mean number) was urea-N (4.95 Plant(-1)) > DAP-N (2.28 Plant(-1)). Both gel and leaf N concentration and uptake was highest at 200 kg ha(-1) for both sources. For 80 % leaf biomass yield, minimum requirement of N was ca 74.90 (urea) and 89.60 kg ha(-1) (DAP). Growth and yield parameters to N application exhibited significant and positive correlations. Critical leaf N concentration was ca 0.88% (DAP) and 0.90% (urea) while mean and maximum NUE was 34% and 64 % (urea) and 43% and 69% (DAP), respectively. Farmers can be advised to apply N at the rate of 150 kg ha(-1) from urea for producing economically higher yield and better-quality A. vera leaves.
  ELSEVIER SCI LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.heliyon.2020.e05718
  DOI ID：10.1016/j.heliyon.2020.e05718, eISSN：2405-8440, Web of Science ID：WOS:000623242400001
• An overview of emerging pollutants in air: Method of analysis and potential public health concern from human environmental exposure　　　　　　　　　　　　　　　
  Christian Ebere Enyoh; Andrew Wirnkor Verla; Wang Qingyue; Franklyn Okechukwu Ohiagu; Akhter Hossain Chowdhury; Emmanuel Chinedu Enyoh; Tanzin Chowdhury; Evelyn Ngozi Verla; Ugwuezumba Patrick Chinwendu
  TRENDS IN ENVIRONMENTAL ANALYTICAL CHEMISTRY, Volume：28, Dec. 2020
  Air pollutants are perhaps the largest cause of diseases and death in the world today. Increasing urbanization and industrialization have caused an increase in number of diverse forms and types of new pollutants, which are difficult to detect and characterize due to their stench behaviour and complex sources of production. Such pollutants have been called emerging pollutants (EPs) and their list is ever increasing. Therefore, the understanding of the method of analysis and health implication of (EPs) in air is critical to providing a more robust understanding of exposure routes, regulations and mitigation. EPs in air discussed in this study are not in any way exhaustive but limited to emerging VOCs (including acrylonitrile, 1-3-butadiene, chloroform, dichloromethane, ethylene oxides, formaldehyde, toluene, trichloroethylene, 1,4-Dioxane) and metals (arsenic, manganese, and vanadium), ultrafine particles, microand nanoplastics, engineered nanoparticles, diesel/black carbon and bioaerosols. Occurrence, detection and health implications of these EPs in air are still unfolding due to limited monitoring studies, lack of standard methodology and regulations. To address this knowledge gap, authors conducted an indepth review of available information. Their spatial distribution, analytical methods and health implications are discussed including the novel coronavirus (COVID-19) as a potential EP in air. The study concluded with highlights of gaps in knowledge and suggestions to key areas for future research. This information is of general interest to environmental scientists and of specific interest to both health and sanitation workers and policymakers at private, government and international organizations. (C) 2020 Elsevier B.V. All rights reserved.
  ELSEVIER, English
  DOI：https://doi.org/10.1016/j.teac.2020.e00107
  DOI ID：10.1016/j.teac.2020.e00107, ISSN：2214-1588, Web of Science ID：WOS:000596635400008
• Oxidative Potential Induced by Ambient Particulate Matters with Acellular Assays: A Review　　　　　　　　　　　　　　　
  Lanfang Rao; Luying Zhang; Xingzi Wang; Tingting Xie; Shumin Zhou; Senlin Lu; Xinchun Liu; Hui Lu; Kai Xiao; Weiqian Wang; Qingyue Wang
  PROCESSES, Volume：8, Number：11, Nov. 2020
  Acellular assays of oxidative potential (OP) induced by ambient particulate matters (PMs) are of great significance in screening for toxicity in PMs. In this review, several typical OP measurement techniques, including the respiratory tract lining fluid assay (RTLF), ascorbate depletion assay (AA), dithiothreitol assay (DTT), chemiluminescent reductive acridinium triggering (CRAT), dichlorofluorescin assay (DCFH) and electron paramagnetic/spin resonance assay (EPR/ESR) are discussed and their sensitivity to different PMs species composition, PMs size distribution and seasonality is compared. By comparison, the DTT assay tends to be the preferred method providing a more comprehensive measurement with transition metals and quinones accumulated in the fine PMs fraction. Specific transition metals (i.e., Mn, Cu, Fe) and quinones are found to contribute OPDTT directly whereas the redox properties of PMs species may be changed by the interactions between themselves. The selection of the appropriate OP measurement methods and the accurate analysis of the relationship between the methods and PM components is conducive to epidemiological researches which are related with oxidative stress induced by PMs exposure.
  MDPI, English
  DOI：https://doi.org/10.3390/pr8111410
  DOI ID：10.3390/pr8111410, eISSN：2227-9717, Web of Science ID：WOS:000593719100001
• Performance of an aliovalent-substituted CoCeOx catalyst from bimetallic MOF for VOC oxidation in air　　　　　　　　　　　　　　　
  Yuxin Li; Wei Han; Ruixuan Wang; Lu-Tao Weng; Ana Serrano-Lotina; Miguel A. Banares; Qingyue Wang; King Lun Yeung
  APPLIED CATALYSIS B-ENVIRONMENTAL, Volume：275, Oct. 2020
  The aliovalent-substitution of cobalt into ceria lattice was demonstrated using a bimetallic CoCeBDC MOF to achieve a high degree of atomic level mixing in the CoCeOx catalyst. Spectroscopic analyses including X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and time-of-flight secondary ion mass spectrometry (ToF-SIMS) confirmed the successful insertion of cobalt atom with a concomitant increase in defects (i.e., Raman I-D/I-F2g = 0.25) and oxygen vacancies (i.e., XPS O-beta/(O-alpha+O-beta)= 0.33) that correlates well with catalytic activity for the oxidations of methanol, acetone, toluene, and o-xylene. The as-prepared CoCeOx performed a 50% conversion (T-50) and 90% conversion (T90) in toluene oxidation at 212 degrees C and 227 degrees C that are significantly lower than the reference Co3O4/CeO2 nanocube catalyst that had T-50 of 261 degrees C and T-90 of 308 degrees C, indicating its better catalytic activity. Moreover, CoCeOx catalyst completely oxidizes organic compounds to carbon dioxide and water, while reaction over Co3O4/CeO2 nanocube catalyst produces significant carbon monoxide.
  ELSEVIER, English, Scientific journal
  DOI：https://doi.org/10.1016/j.apcatb.2020.119121
  DOI ID：10.1016/j.apcatb.2020.119121, ISSN：0926-3373, eISSN：1873-3883, Web of Science ID：WOS:000539373300016
• Ceria and its related materials for VOC catalytic combustion: A review　　　　　　　　　　　　　　　
  Qingyue Wang; King Lun Yeung; Miguel A. Banares
  CATALYSIS TODAY, Volume：356, First page：141, Last page：154, Oct. 2020
  Based on unique oxygen storage capacity (OSC), ceria catalysts are widely investigated for remediation of volatile organic compounds (VOCs) over the recent decade. It is generally accepted that VOC oxidation on ceria is through Mars-van Krevelen mechanism, where lattice oxygen (O-Lat) reacts with adsorbed VOC molecule, followed by re-oxidation of reduced ceria by replenishing O-Lat from gaseous O-2. Oxygen vacancy and oxygen mobility are the key factors involved that influence the OSC and consequently modify the catalytic performance. Many strategies have been explored in the literature to optimize the materials. For the formation energy of oxygen vacancies varies with crystal orientation, ceria with specific morphologies (i.e., nanorods with (110) and (100)) perform better than the typical ceria catalysts. Beyond that, transition metal cations (e.g., V5+, Zr4+, Cr3+, Mnx+, and Cu2+) can dope or aliovalent substitute into ceria lattice, resulting in more defects and tuning the reactivity. Precious metal nanoparticles (e.g., Au, Pt, Pd, Ru) are known to activate the lattice oxygen at the interface of noble metal and ceria, facilitating the transformation of surface oxygen species and decreasing the light-off temperature. These strategies are also applicable to keep ceria from deactivation when facing chlorinated VOCs (CVOCs) and volatile sulfur compounds (VSCs).
  ELSEVIER, English
  DOI：https://doi.org/10.1016/j.cattod.2019.05.016
  DOI ID：10.1016/j.cattod.2019.05.016, ISSN：0920-5861, eISSN：1873-4308, Web of Science ID：WOS:000579547900019
• Studies on relationships between air pollutants and allergenicity of Humulus Scandens pollen collected from different areas of Shanghai　　　　　　　　　　　　　　　
  Senlin Lu; Chuanhe Yao; Shumin Zhou; Yichun Lin; Luying Zhang; Junyang Zeng; Lanfang Rao; Wei Zhang; Yafeng Dai; Hong Li; Weiqian Wang; Qingyue Wang
  JOURNAL OF ENVIRONMENTAL SCIENCES, Volume：95, First page：43, Last page：48, Sep. 2020
  Pollen pollution and allergy are becoming prominent issues in China. However, few studies on pollinosis have been reported. As an allergen in the atmosphere, allergenic Humulus scandens pollen was collected from four districts of Shanghai, including Wusong (WS), Jiading (JD), Xujiahui (XJH) and Songjiang (SJ). The mass concentrations of SO2, NO2, O-3, PM10, and PM2.5 (particulate matter with air dynamic diameter less than 10 and 2.5 mu m, respectively) near the four sampling sites were also recorded during Humulus scandens pollen season. The allergenicity of the Humulus scandens pollen was assessed by using of a rat model and enzyme linked immunosorbent assay (ELISA). Relationships between the allergenicity and air pollutants were correlated. Our results demonstrated that the biological viability of the pollens collected from the four districts exhibited no significant differences. ELISA and dot blotting results further demonstrated that the serum of sensitized rats exhibited much higher immune-reactive response than that of control groups. Western blotting showed that the 15 KD (1KD = 1000 dalton) proteins of Humulus pollen led to the allergic response. The allergenic intensity of Humulus pollen protein from different samples followed the pattern: WS > JD > XJ > SJ. There was a negative relationship between the allergenicity of Humulus pollens and PM10 (R = -0.99) / PM2.5 (R = -0.73), and a positive relationship with O-3 (R = 0.92). These data clearly showed that PM10 and PM2.5 could enhance Humulus pollen protein release, and O-3 could aggravate the allergenicity of the Humulus pollen. (c) 2020 Published by Elsevier B.V. on behalf of The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences.
  SCIENCE PRESS, English, Scientific journal
  DOI：https://doi.org/10.1016/j.jes.2020.03.037
  DOI ID：10.1016/j.jes.2020.03.037, ISSN：1001-0742, eISSN：1878-7320, Web of Science ID：WOS:000548603700006
• Sources of HULIS-C and its relationships with trace metals, ionic species in PM(2.5)in suburban Shanghai during haze and non-haze days　　　　　　　　　　　　　　　
  Myat Sandar Win; Junyang Zeng; Chuanhe Yao; Mengfei Zhao; Guangli Xiu; Tingting Xie; Lanfang Rao; Luying Zhang; Hui Lu; Xinchun Liu; Qingyue Wang; Senlin Lu
  JOURNAL OF ATMOSPHERIC CHEMISTRY, Volume：77, Number：3, First page：63, Last page：81, Sep. 2020
  Humic-like substances (HULIS), the most ubiquitous class of water-soluble organic compounds in the atmosphere could enhance the generation of reactive oxygen species (ROS), and play a significant role in impacting aerosol chemistry and health effects. In this study, twenty-three PM(2.5)samples were collected in the atmosphere of suburban Shanghai from November 29 to December 17, 2015, and March 17 to April 30, 2016, during haze and non-haze days. The mean concentrations of HULIS in spring both in haze and non-haze days (2.34 +/- 0.70 mu g/m(3)and 1.94 +/- 0.88 mu g/m(3)) were relatively higher than in that of winter (1.93 +/- 0.95 mu g/m(3)and 1.31 +/- 0.28 mu g/m(3)). The ammonium, sulfate, and nitrate are the dominant ionic species in both winter and spring during haze days in suburban Shanghai. Correlation results revealed that HULIS formation was highly associated with the biomass burning (K) and secondary aerosols formation (SIA: NH4+, SO42-, NO3-) and also well-correlated with F(-)and ca.(2+)ions, crustal elements (Al and Fe) and anthropogenic pollution metals (As, Se, Rb, Sr, and Pb), suggesting that HULIS-C formation might be from biomass burning and secondary aerosol processes and also mixed formation (marine, crustal and industrial emissions) sources. From the coinciding results of the clustering analysis and weighted-CWT model, the principal potential source regions were the short transports from the Yangtze River Delta (YRD) regions, local regions, marine areas (the Bohai Sea, the Yellow Sea, the East China Sea) and also the long-range transports from northwestern in those seasons.
  SPRINGER, English, Scientific journal
  DOI：https://doi.org/10.1007/s10874-020-09404-7
  DOI ID：10.1007/s10874-020-09404-7, ISSN：0167-7764, eISSN：1573-0662, Web of Science ID：WOS:000541330100001
• Relationships between chemical elements of PM2.5 and O-3 in Shanghai atmosphere based on the 1-year monitoring observation　　　　　　　　　　　　　　　
  Junyang Zeng; Luying Zhang; Chuanhe Yao; Tingting Xie; Lanfang Rao; Hui Lu; Xinchun Liu; Qingyue Wang; Senlin Lu
  JOURNAL OF ENVIRONMENTAL SCIENCES, Volume：95, First page：49, Last page：57, Sep. 2020
  Mass level of fine particles (PM2.5) in main cities in China has decreased significantly in recent years due to implementation of Chinese Clean Air Action Plan since 2013, however, O-3 pollution is getting worse than before, especially in megacities such as in Shanghai. In this work, O-3 and PM2.5 were continuously monitored from May 27, 2018 to March 31, 2019. Our data showed that the annual average concentration of PM2.5 and O-3 (O-3-8 hr, maximum 8-hour moving average of ozone days) was 39.35 +/- 35.74 and 86.49 +/- 41.65 mu g/m(3), respectively. The concentrations of PM2.5 showed clear seasonal trends, with higher concentrations in winter (83.36 +/- 18.66 mu g/m(3)) and lower concentrations in summer (19.85 +/- 7.23 mu g/m(3)), however, the seasonal trends of O-3 were different with 103.75 +/- 41.77 mu g/m(3) in summer and 58.59 +/- 21.40 mu g/m(3) in winter. Air mass backward trajectory, analyzing results of potential source contribution function model and concentration weighted trajectory model implied that pollutants from northwestern China contributed significantly to the mass concentration of Shanghai PM2.5, while pollutants from areas of eastern coastal provinces and South China Sea contributed significantly to the mass level of ozone in Shanghai atmosphere. Mass concentration of twenty-one elements in the PM2.5 were investigated, and their relationships with O-3 were analyzed. Mass level of ozone had good correlation with that of Ba (r = 0.64, p < 0.05) and V (r = 0.30, p > 0.05), suggesting vehicle emission pollutants contribute to the increasing concentration of ozone in Shanghai atmosphere. (c) 2020 Published by Elsevier B.V. on behalf of The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences.
  SCIENCE PRESS, English, Scientific journal
  DOI：https://doi.org/10.1016/j.jes.2020.03.043
  DOI ID：10.1016/j.jes.2020.03.043, ISSN：1001-0742, eISSN：1878-7320, Web of Science ID：WOS:000548603700007
• Characterization of Pyrolysis Products and Kinetic Analysis of Waste Jute Stick Biomass　　　　　　　　　　　　　　　
  Jayanto Kumar Sarkar; Qingyue Wang
  PROCESSES, Volume：8, Number：7, Jul. 2020
  Thermochemical process of biomass is being considered as a latest technique for the restoration of energy source and biochemical products. In this study, the influence of the different heating rates on pyrolysis behaviors and kinetic of jute stick were investigated to justify the waste jute stick biomass as a potential source of bioenergy. Pyrolysis experiments were carried out at four several heating rates of 10, 20, 30 and 40 degrees C/min, by utilizing the thermogravimetric analyzer (TG-DTA) and a fixed-bed pyrolysis reactor. Two different kinetic methods, Kissinger-Akahira-Sunose (KAS) and Ozawa-Flynn-Wall (OFW) were used to determine the distinct kinetic parameters. The experimental results showed that, the heating rates influenced significantly on the position of TG curve and maximum T-m peaks and highest decomposition rate of the jute stick biomass. Both the highest point of TG and the lowest point of Derivative thermogravimetry (DTG) curves were shifted towards the maximum temperature. However, the heating rates also influenced the products of pyrolysis yield, including bio-char, bio-oil and the non-condensable gases. The average values of activation energy were found to be 139.21 and 135.99 kJ/mol based on FWO and KAS models, respectively.
  MDPI, English, Scientific journal
  DOI：https://doi.org/10.3390/pr8070837
  DOI ID：10.3390/pr8070837, eISSN：2227-9717, Web of Science ID：WOS:000557235000001
• Characterization, Pollution Sources, and Health Risk of Ionic and Elemental Constituents in PM(2.5)of Wuhan, Central China　　　　　　　　　　　　　　　
  Weiqian Wang; Weilin Zhang; Shiyang Dong; Shinichi Yonemachi; Senlin Lu; Qingyue Wang
  ATMOSPHERE, Volume：11, Number：7, Jul. 2020
  Atmospheric PM(2.5)samples from Wuhan, China were collected during a winter period of February and a summer period of August in 2018. The average PM(2.5)mass concentration in winter reached 112 mu g/m(3)-about two-fold higher than that found in summer. Eight ionic species constituted 1/3 of PM2.5, whereas more than 85% represented secondary ionic aerosols (NO3-, SO(4)(2-)and NH4+). Higher ratios of NO3-/SO42-(0.95-2.62) occurred in winter and lower ratios (0.11-0.42) occurred in summer showing the different contribution for mobile and stationary sources. Seventeen elemental species constituted about 10% of PM2.5, with over 95% Na, Mg, Al, Ca, Fe, K and Zn. Higher K-concentration occurred in winter indicating greater contribution from biomass and firework-burning. Carcinogenic risks by Cr, As, Cd, Ni and Pb in PM(2.5)indicated that about 6.94 children and 46.5 adults among per million may risk getting cancer via inhalation during surrounding winter atmospheric sampling, while about 5.41 children and 36.6 adults have the same risk during summer. Enrichment factors (EFs) and elemental ratios showed that these hazardous elements were mainly from anthropogenic sources like coal and oil combustion, gasoline and diesel vehicles.
  MDPI, English, Scientific journal
  DOI：https://doi.org/10.3390/atmos11070760
  DOI ID：10.3390/atmos11070760, eISSN：2073-4433, Web of Science ID：WOS:000572579000001
• Soluble Fe release from iron-bearing clay mineral particles in acid environment and their oxidative potential　　　　　　　　　　　　　　　
  Tingting Xie; Senlin Lu; Junyang Zeng; Lanfang Rao; Xingzi Wang; Myat Sandar Win; Daizhou Zhang; Hui Lu; Xinchun Liu; Qingyue Wang
  SCIENCE OF THE TOTAL ENVIRONMENT, Volume：726, Jul. 2020
  Soluble iron from atmospheric aerosol particles has toxicological effects on ambient environment due to their oxidative potential. However, the dissolution process and factors affecting this process are poorly understood. In this study, by solid phase characterization and aqueous dissolution experiments, we investigated the influence of acids, including HCl, H2SO4 and HNO3, and H+ concentration on iron dissolution rate, solubility and speciation of iron in chlorite, illite, kaolinite and pyrite. The dissolution of iron-bearing clay minerals, i.e. chlorite, illite and kaolinite, was a multi-stage process with a rapid rate in the initial stage and then decreasing rate in the following stages. In contrast, the regularly crystallized pyrite proceeded with an extremely rapid dissolution rate at very beginning and then remained almost constant. In all acid solutions, the dissolution rate was in the order of pyrite N illite N chlorite N kaolinite. H2SO4 was stronger than HCl and HNO3 in the destruction of mineral structures to release iron, while HNO3 dissolved more iron in pyrite (FeS2). High H+ concentration easily destroyed the mineral structures to release the structural or interlayer iron, whereas low H+ concentration increased the proportion of Fe (II) in clay minerals. Non-linear fitting of continuous dissolution models showed that the iron dissolution rates and iron redox speciation as functions of time were well predicted, with r(2) > 0.99 for chlorite and illite, and r(2) > 0.96 for kaolinite. Oxidative potential analysis proved that the dissolved iron possessed a considerable potential to generate reactive oxygen species. (C) 2020 Elsevier B.V. All rights reserved.
  ELSEVIER, English, Scientific journal
  DOI：https://doi.org/10.1016/j.scitotenv.2020.138650
  DOI ID：10.1016/j.scitotenv.2020.138650, ISSN：0048-9697, eISSN：1879-1026, Web of Science ID：WOS:000537249100005
• Exploring Token-Oriented In-Network Prioritization in Datacenter Networks　　　　　　　　　　　　　　　
  Kexin Liu; Bingchuan Tian; Chen Tian; Bo Li; Qingyue Wang; Jiaqi Zheng; Jiajun Sun; Yixiao Gao; Wei Wang; Guihai Chen; Wanchun Dou; Yanan Jiang; Huaping Zhou; Jingjie Jiang; Fan Zhang; Gong Zhang
  IEEE TRANSACTIONS ON PARALLEL AND DISTRIBUTED SYSTEMS, Volume：31, Number：5, First page：1223, Last page：1238, May 2020
  In memory computing and high-end distributed storage demand low latency, high throughput, and zero data loss simultaneously from datacenter networks. Existing reactive congestion control approaches cannot both minimize queuing latency and ensure zero data loss. A token-oriented proactive approach can achieve them together by controlling congestion even before sending data packets. However, state-of-the-art token-oriented approaches only strive to optimize network-level metrics: maximizing throughput while achieving flow-level fairness. This article answers the question of how to support objective-aware traffic scheduling in token-oriented approaches. The novelty of Token-Oriented in-network Prioritization (TOP) is that it prioritizes tokens instead of data packets. We make three contributions. Via simulations over a hypothetical TOP system, our first contribution is demonstrating the potential performance gain that can be brought by TOP. Second, we investigate the applicability of TOP. Although the overhead of enabling necessary TOP features in switches is trivial, we find that mainstream commodity datacenter switches do not support them. We hence propose a readily-deployable remedy to achieve in-network prioritization by pushing both switch and end-host hardware capacity to an extreme end. Lastly, we implement a running TOP system with Linux hosts and commodity switches, and evaluate TOP in testbeds and with large-scale simulations for various scenarios.
  IEEE COMPUTER SOC, English, Scientific journal
  DOI：https://doi.org/10.1109/TPDS.2019.2958899
  DOI ID：10.1109/TPDS.2019.2958899, ISSN：1045-9219, eISSN：1558-2183, Web of Science ID：WOS:000526526100016
• Size characteristics and health risks of inorganic species in PM1.1 and PM2.0 of Shanghai, China, in spring, 2017　　　　　　　　　　　　　　　
  Qingyue Wang; Weiqian Wang
  ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, Volume：27, Number：13, First page：14690, Last page：14701, May 2020
  Ambient particulates of Shanghai with 5-stage particle sizes were firstly determined in spring, 2017. The particles' mass concentrations were mainly observed in fine particle matter (PM1.1) and coarse particles (diameter > 7.0 mu m). Water-soluble ionic contents were also more distributed in PM1.1 with the great contents of secondary particles (NO3-, SO42-, and NH4+). Higher ratios of NO2/SO2 and NO3-/SO42- indicated that the vehicle emissions might be made more greater contribution rather than coal combustions to the fine particles. Crustal enrichment factors (EFcs) of trace elements (V, Cr, Ni, Zn, As, Se, Rb, Cd, Pb, and Bi) in PM1.1 in that called slight air pollution events were always higher than those in that called severe air pollution events and EFcs of Se were up to 2.5 x 10(4), while EFcs of Pb, Bi, and Cd were over 100. Based on kinds of elemental ratios in PM1.1 and PM1.1-2.0, atmospheric pollutants in Shanghai might be mainly from coal and oil combustions, diesel, and gasoline vehicles. Air masses backward trajectories also showed that the air masses from the northern part of China were one important air pollutant origins, but other ones might be the local sources, such as traffic and industries. Based on carcinogenic risk analysis of PM2.0, it was considerable that 12-60 children and 37-87 adults among millions of people living in Shanghai might be attacked by cancer during their lifetime. Moreover, the great carcinogenic risk was also observed according to the high concentrations of elemental Cr and As in PM1.1.
  SPRINGER HEIDELBERG, English, Scientific journal
  DOI：https://doi.org/10.1007/s11356-020-07932-z
  DOI ID：10.1007/s11356-020-07932-z, ISSN：0944-1344, eISSN：1614-7499, Web of Science ID：WOS:000513055100003
• Polyurethane Foams and Bio-Polyols from Liquefied Cotton Stalk Agricultural Waste　　　　　　　　　　　　　　　
  Qingyue Wang; Nuerjiamali Tuohedi
  SUSTAINABILITY, Volume：12, Number：10, May 2020
  Cotton is planted on a large scale in China, especially in the Xinjiang Region. A large amount of agricultural waste from cotton plants is produced annually, and currently poses a disposal problem. In this study the product after liquefaction of cotton stalk powder was mixed with diphenylmethane diisocyanate to prepare polyurethane foams. The effects of the liquefaction conditions on the properties of the polyols and polyurethane foams produced using cotton stalk were investigated. The optimal processing conditions for the liquefied product, considering the quality of the polyurethane foams, were studied as a function of the residue fraction. Bio-polyols with promising material properties were produced using liquefaction conditions of 150 degrees C, reaction time of 90 min, catalyst content of 3 wt.%, and 20 w/w% cotton stalk loading. We investigated the optimal processing conditions for producing bio-foam materials with mechanical properties comparable to those of petroleum-based foam materials. This study demonstrated the potential of cotton stalk agricultural waste for use as a feedstock for producing polyols via liquefaction. It was shown that polyethylene glycol 400 (PEG400) and glycerin can be used as alternative solvents for liquefaction of lignocellulosic biomass, such as cotton stalk, to produce bio-polyol and polyurethane foams.
  MDPI, English, Scientific journal
  DOI：https://doi.org/10.3390/su12104214
  DOI ID：10.3390/su12104214, eISSN：2071-1050, Web of Science ID：WOS:000543421400272
• Wood-based epoxy resin's synthesis using decayed woody material from mushroom cultivation　　　　　　　　　　　　　　　
  Sayuri Kawamura; Qingyue Wang
  International Journal of Design and Nature and Ecodynamics, Volume：15, Number：2, First page：155, Last page：160, Apr. 2020
  The aim of this study is to investigate the epoxy resin prepared from liquefied decayed woody materials after mushroom cultivation, in order to widen the applicable range of liquefaction technology. Liquefaction technology is valid replacement of fossil fuel and serving the Sustainable Development Goals. Decayed materials have less usage due to the damage to its original form and the deterioration of its strength. However, decay refers to decomposition of woody composition of cellulose, hemicellulose and lignin, which are easy to be liquefied. Decayed wood woody material was first liquefied by reaction with polyethylene glycol and glycerin. Then epoxy function groups were introduced to the liquefied wood by the glycidyl etherification. The synthesized epoxy resins from decayed woody sample have the similar chemical and technological properties with these from control woody samples. This reality indicates that decayed woody materials have potentially to be used for a wide range of applications including binding and contribute to construct sustainable development society.
  International Information and Engineering Technology Association, English, Scientific journal
  DOI：https://doi.org/10.18280/ijdne.150203
  DOI ID：10.18280/ijdne.150203, ISSN：1755-7445, SCOPUS ID：85084998587
• Different Pyrolysis Process Conditions of South Asian Waste Coconut Shell and Characterization of Gas, Bio-Char, and Bio-Oil　　　　　　　　　　　　　　　
  Jayanto Kumar Sarkar; Qingyue Wang
  ENERGIES, Volume：13, Number：8, Apr. 2020
  In the present study, a series of laboratory experiments were conducted to examine the impact of pyrolysis temperature on the outcome yields of waste coconut shells in a fixed bed reactor under varying conditions of pyrolysis temperature, from 400 to 800 degrees C. The temperature was increased at a stable heating rate of about 10 degrees C/min, while keeping the sweeping gas (Ar) flow rate constant at about 100 mL/min. The bio-oil was described by Fourier transform infrared spectroscopy (FTIR) investigations and demonstrated to be an exceptionally oxygenated complex mixture. The resulting bio-chars were characterized by elemental analysis and scanning electron microscopy (SEM). The output of bio-char was diminished pointedly, from 33.6% to 28.6%, when the pyrolysis temperature ranged from 400 to 600 degrees C, respectively. In addition, the bio-chars were carbonized with the expansion of the pyrolysis temperature. Moreover, the remaining bio-char carbons were improved under a stable structure. Experimental results showed that the highest bio-oil yield was acquired at 600 degrees C, at about 48.7%. The production of gas increased from 15.4 to 18.3 wt.% as the temperature increased from 400 to 800 degrees C. Additionally, it was observed that temperature played a vital role on the product yield, as well as having a vital effect on the characteristics of waste coconut shell slow-pyrolysis.
  MDPI, English, Scientific journal
  DOI：https://doi.org/10.3390/en13081970
  DOI ID：10.3390/en13081970, eISSN：1996-1073, Web of Science ID：WOS:000538041800113
• Effect of macro-and micro-plastics in soil on growth of Juvenile Lime Tree (Citrus aurantium)　　　　　　　　　　　　　　　
  Andrew Wirnkor Verla; Christian Ebere Enyoh; Isiuku Beniah Obinna; Evelyn Ngozi Verla; Wang Qingyue; Md Akhter Hossain Chowdhury; Emmanuel Chinedu Enyoh; Tanzin Chowdhury
  AIMS ENVIRONMENTAL SCIENCE, Volume：7, Number：6, First page：526, Last page：541, 2020
  Plastics in agricultural soils are of current concern to environmental scientist due to potential effects on soil-plant system and food security. In this study, the effect of macro- and micro-sized plastic types of low density polyethylene (LDPE), polypropylene (PP) and polystyrene (PS) in soil on growth of juvenile lime tree were studied using a pot experiment under ambient field conditions. To determine the effect, seven exposure patterns (single: LDPE, PP, PS and mixture: LDPE+PP, LDPE+PS, PP+PS, LDPE+PP+PS) in soil was tested. The results showed that macro-and micro- plastic residues affected the plant during vegetative growth with LDPE single exposure had the strongest negative effects (inhibition of 0.26%). However, LDPE+PP+PS had some positive effects by improving growth higher than the control. Overall, microplastics showed more negative effects than macroplastics, but the lime tree showed strong tolerance (with tolerance index > 70 %) to the different treatments. Without doubt, more research is urgently needed in order to fully understand the effect and mechanism of macroplastics and microplastics in soil-plant system. When understood remediation methods could be formulated to minimize the effects of plastics which are now ubiquitous in the environment.
  AMER INST MATHEMATICAL SCIENCES-AIMS, English, Scientific journal
  DOI：https://doi.org/10.3934/environsci.2020033
  DOI ID：10.3934/environsci.2020033, ISSN：2372-0344, eISSN：2372-0352, Web of Science ID：WOS:000604298000005
• A characterization of HULIS-C and the oxidative potential of HULIS and HULIS-Fe(II) mixture in PM2.5 during hazy and non-hazy days in Shanghai　　　　　　　　　　　　　　　
  Senlin Lu; Myat Sandar Win; Junyang Zeng; Chuanhe Yao; Mengfei Zhao; Guangli Xiu; Yichun Lin; Tingting Xie; Yafeng Dai; Lanfang Rao; Luying Zhang; Shinich Yonemochi; Qingyue Wang
  ATMOSPHERIC ENVIRONMENT, Volume：219, Dec. 2019
  Humic-like substances (HULIS) were isolated from PM2.5 in Shanghai. The oxidative potential and the cytotoxicity of the isolated HULIS and its Fe(II) binary mixtures were evaluated by using cell-free Dithiothreitol (DTT) and cellular 3-(4,5-dimethylthiazol-2-y1)-2,5-diphenyltetrazolium bromide (MTT) assays. Our data showed that HULIS-C contents in spring during hazy and non-hazy days were relatively higher than in winter. Cell-free DTT and bioassay (reactive oxygen species (ROS) and MTT) results showed that higher ROS values were released from individual HULIS or SRFA (Suwannee River Fulvic Acid) compounds than HULIS-Fe(II) complexes and Fe(II) alone. In addition, DTT and ROS correlation results were in line with each other and the oxidative potentials of HULIS and its binary mixtures were strongly inter-correlated with carbonaceous components (WSOC, OC) in PM2.5. Dose-dependent MIT results revealed that cell mortality positively correlated with the mass concentrations of HULIS (10-50 mu g/ml). In the HULIS-Fe(II) system, the ROS generation ability depended on the mixing time of HULIS-C with Pe(II), thus suggesting that the organic-metal complexation time and the Fenton reaction induced by Fe (II) play a role in the cell mortality rate.
  PERGAMON-ELSEVIER SCIENCE LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.atmosenv.2019.117058
  DOI ID：10.1016/j.atmosenv.2019.117058, ISSN：1352-2310, eISSN：1873-2844, Web of Science ID：WOS:000503096600025
• A Novel Approach to High-Performance Aliovalent-Substituted Catalysts-2D Bimetallic MOF-Derived CeCuOx Microsheets　　　　　　　　　　　　　　　
  Qingyue Wang; Zhimin Li; Miguel A. Banares; Lu-Tao Weng; Qinfen Gu; Jason Price; Wei Han; King Lun Yeung
  SMALL, Volume：15, Number：42, Oct. 2019
  Mixed transition metal oxides (MTMOs) have enormous potential applications in energy and environment. Their use as catalysts for the treatment of environmental pollution requires further enhancement in activity and stability. This work presents a new synthesis approach that is both convenient and effective in preparing binary metal oxide catalysts (CeCuOx) with excellent activity by achieving molecular-level mixing to promote aliovalent substitution. It also allows a single, pure MTMO to be prepared for enhanced stability under reaction by using a bimetallic metal-organic framework (MOF) as the catalyst precursor. This approach also enables the direct manipulation of the shape and form of the MTMO catalyst by controlling the crystallization and growth of the MOF precursor. A 2D CeCuOx catalyst is investigated for the oxidation reactions of methanol, acetone, toluene, and o-xylene. The catalyst can catalyze the complete reactions of these molecules into CO2 at temperatures below 200 degrees C, representing a significant improvement in performance. Furthermore, the catalyst can tolerate high moisture content without deactivation.
  WILEY-V C H VERLAG GMBH, English, Scientific journal
  DOI：https://doi.org/10.1002/smll.201903525
  DOI ID：10.1002/smll.201903525, ISSN：1613-6810, eISSN：1613-6829, Web of Science ID：WOS:000482639500001
• Performance of MOF-derived CeO2 catalysts for VOCs oxidation　　　　　　　　　　　　　　　
  Yuxin Li; Qingyue Wang; King Lun Yeung
  ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Volume：258, Aug. 2019
  AMER CHEMICAL SOC, English
  ISSN：0065-7727, Web of Science ID：WOS:000525055502360
• Nickel foam and graphene hybird aerogels supported CeO2 for VOCs oxidation　　　　　　　　　　　　　　　
  Jiaxian Luo; Weiyang Chen; Qingyue Wang; King Lun Yeung
  ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Volume：258, Aug. 2019
  AMER CHEMICAL SOC, English
  ISSN：0065-7727, Web of Science ID：WOS:000525055502475
• Catalytic materials derived from MOFs for low-temperature VOC remediation　　　　　　　　　　　　　　　
  Qingyue Wang; Zhimin Li; Wei Han; King Lun Yeung
  ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Volume：258, Aug. 2019
  AMER CHEMICAL SOC, English
  ISSN：0065-7727, Web of Science ID：WOS:000525055502317
• SST Anomalies in the Mozambique Channel Using Remote Sensing and Numerical Modeling Data　　　　　　　　　　　　　　　
  Guoqing Han; Changming Dong; Junde Li; Jingsong Yang; Qingyue Wang; Yu Liu; Joel Sommeria
  REMOTE SENSING, Volume：11, Number：9, May 2019
  Based on both satellite remote sensing sea surface temperature (SST) data and numerical model results, SST warming differences in the Mozambique Channel (MC) west of the Madagascar Island (MI) were found with respect to the SST east of the MI along the same latitude. The mean SST west of the MI is up to about 3.0 degrees C warmer than that east of the MI. The SST differences exist all year round and the maximum value appears in October. The area of the highest SST is located in the northern part of the MC. Potential factors causing the SST anomalies could be sea surface wind, heat flux and oceanic flow advection. The presence of the MI results in weakening wind in the MC and in turn causes weakening of the mixing in the upper oceans, thus the surface mixed layer depth becomes shallower. There is more precipitation on the east of the MI than that inside the MC because of the orographic effects. Different precipitation patterns and types of clouds result in different solar radiant heat fluxes across both sides of the MI. Warm water advected from the equatorial area also contribute to the SST warm anomalies.
  MDPI, English, Scientific journal
  DOI：https://doi.org/10.3390/rs11091112
  DOI ID：10.3390/rs11091112, ISSN：2072-4292, Web of Science ID：WOS:000469763600120
• Aqueous photochemical degradation of mefenamic acid and triclosan: role of wastewater effluent matrices　　　　　　　　　　　　　　　
  Kenshi Sankoda; Yuta Sugawara; Takuya Aida; Chieko Yamamoto; Jun Kobayashi; Kazuhiko Sekiguchi; Qingyue Wang
  WATER SCIENCE AND TECHNOLOGY, Volume：79, Number：10, First page：1853, Last page：1859, May 2019
  In this study, photochemical degradation of two emerging pharmaceutical chemicals, mefenamic acid (MF) and triclosan (TCS), was investigated to clarify the role of treated wastewater effluent matrices on their environmental photolysis. Target compounds were individually exposed to simulated sunlight in different media: ultrapure buffered water and synthetic field water with treated municipal wastewater effluent. The results in ultrapure buffered water showed that the direct photolysis processes in aquatic environments are not relevant to the elimination of MF. However, in samples containing treated wastewater effluent, photochemical degradation of MF was clearly enhanced. Our results indicate that MF undergoes indirect photolysis by reactive intermediates produced in an effluent matrix. Further quenching experiments suggested that photochemically produced hydroxyl radicals and excited triplet state dissolved organic matter drive the degradation of MF. In contrast to MF, TCS photochemical degradation proceeds through rapid direct photolysis. TCS was quickly degraded in ultrapure buffered water but it is considerably hampered in samples containing wastewater effluent. The declined degradation of TCS in the synthetic field water was discussed in terms of underlying optical filter effects by coexisting chromophoric substances. Results emphasize the importance of taking local water chemistry into consideration when predicting natural attenuation of pharmaceutical chemicals in receiving areas.
  IWA PUBLISHING, English, Scientific journal
  DOI：https://doi.org/10.2166/wst.2019.173
  DOI ID：10.2166/wst.2019.173, ISSN：0273-1223, eISSN：1996-9732, Web of Science ID：WOS:000476841100003
• Diversity of bacteria in cloud water collected at a National Atmospheric Monitoring Station in Southern China　　　　　　　　　　　　　　　
  Peng Jiaxian; Zhou Shumin; Xiao Kai; Zeng Junyang; Yao Chuanhe; Lu Senlin; Zhang Wei; Fu Yuzhen; Yang Yuxiang; Bi Xinhui; Zhang Guohua; Wang Qingyue
  ATMOSPHERIC RESEARCH, Volume：218, First page：176, Last page：182, Apr. 2019
  Bacteria in the atmosphere affect human health and atmospheric characteristics, however, few studies have investigated bacteria in high altitude areas in China, especially in clouds and fog. In this study, the bacterial community structures of three cloud water samples, collected at the Nanling national atmospheric monitoring station (112 degrees 53'56 '' E, 24 degrees 41'56 '' N) in China, were studied by combining culture-based approach and high-throughput sequencing technology. The results showed that the dominant bacteria in cloud water samples were Proteobacteria (71.36%), followed by Actinobacteria (21.72%) and bacteroidetes (6.43%), but bacterial species identified using a culture-based approach were < 1% of the total bacteria. NO2, SO42-, and pH value were related to the community structures of bacterial, indicating anthropogenic emissions possibly enhanced the variety of bacterial communities in cloud water.
  ELSEVIER SCIENCE INC, English, Scientific journal
  DOI：https://doi.org/10.1016/j.atmosres.2018.12.004
  DOI ID：10.1016/j.atmosres.2018.12.004, ISSN：0169-8095, eISSN：1873-2895, Web of Science ID：WOS:000457814600015
• Size distribution of Platanus acerifolia allergen 3 (Pla a3) in Shanghai ambient size-resolved particles and its allergenic effects　　　　　　　　　　　　　　　
  Shumin Zhou; Hui Zhao; Jiaxian Peng; Qiang Hong; Kai Xiao; Yu Shang; Senlin Lu; Wei Zhang; Minghong Wu; Shuijun Li; Shen Yu; Weqian Wang; Qingyue Wang
  ATMOSPHERIC ENVIRONMENT, Volume：198, First page：324, Last page：334, Feb. 2019
  Pollen allergy has become a major problem for a considerable and steadily increasing percentage of people worldwide. Allergenic protein, which is contained in subpollens, can be released from pollen and suspended in air to cause allergenic reactions. However, the distribution of the allergenic protein and its relationship with inorganic ions in ambient particles has not been reported. Here, a recombinant Platanus acerifolia allergen3 and tandemsix-histidine epitope (His(6)) fusion protein (rPla a3) was expressed in a prokaryotic system and then purified by affinity chromatography. The allergenicity of both rPla a3 and natural Pla a3 in Platanus pollen protein extract was assessed by enzyme-linked immunosorbent assay using the sera of rPla a3-sensitized rats. Our results demonstrated that IgE from rPla a3-sensitized rats could be used to quantify the allergenicity of Pla a3 in the released Platanus pollen and identify the mass level of Pla 3 in size-resolved particles. The peak of natural Pla a3 expression was found in the middle of April, and the highest mass level of Pla a3 occurred in ambient particles diameters larger than 7 mu m. The mass concentration of Pla a3 in the atmosphere was consistent with that of the total protein variety, which also showed a peak in particles with diameters larger than 7 mu m during the Platanus pollen season. Remarkably, most Pla a3 existed in particulate matters > 7 mu m, including intact Platanus pollen, and non-negligible partitions of Pla a3 were detected in particles with diameters less than 7.0 mu m. Major ions (Ca2+, NH4+, and SO42-) in ambient particles not only aggravated pollen rupture and content release, but also affected the distribution of Pla 3 in the particles. Allergic disease could be specifically identified by using rPla a3, and there was a short lag between hospital admission for allergic disease and the peak of Platanus protein concentration in spring.
  PERGAMON-ELSEVIER SCIENCE LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.atmosenv.2018.10.060
  DOI ID：10.1016/j.atmosenv.2018.10.060, ISSN：1352-2310, eISSN：1873-2844, Web of Science ID：WOS:000455693900030
• Dynamics of dissolved organic matter in a wastewater effluent-impacted Japanese urban stream: characteristics, occurrence and photoreactivity of fluorescent components　　　　　　　　　　　　　　　
  Kenshi Sankoda; Chieko Yamamoto; Kazuhiko Sekiguchi; Jun Kobayashi; Qingyue Wang
  WATER SCIENCE AND TECHNOLOGY, Volume：78, Number：10, First page：2036, Last page：2045, Dec. 2018
  We report the results of using the excitation-emission matrix (EEM) method combined with parallel factor analysis (PARAFAC) to investigate the characteristics and occurrence of dissolved organic matter (DOM) in an urban stream impacted by effluent from a wastewater treatment plant (WWTP). The PARAFAC model divides the bulk EEM spectra into six individual fluorescent components with three humic-like components (C1-C3), two protein-like components (C4 and C5) and a wastewater-derived component (C6). In general, intensities of fluorescent components are abundant in WWTP effluent impacted samples, thus showing that such an effluent is a major source of DOM in urban rivers, but C5 is considered to have autochthonous sources within the stream. In areas where the effluent is released, the fluorescent intensity from components (except C5) gradually decreases as these components are transported downstream. However, concentrations of dissolved organic carbon remain almost constant downstream of the release area. These results would be attributed to degradation and/or modification of fluorophore. Photolysis experiments confirmed that fluorescent intensities can decrease with increase of irradiation times. C6 particularly showed a rapid photodegradation, remaining only 24.1% after 48 h photolysis. These findings would be important when assessing DOM source and water quality in aquatic environments by EEM-PARAFAC.
  IWA PUBLISHING, English, Scientific journal
  DOI：https://doi.org/10.2166/wst.2018.468
  DOI ID：10.2166/wst.2018.468, ISSN：0273-1223, eISSN：1996-9732, Web of Science ID：WOS:000457673100002
• Atmospheric HULIS and its ability to mediate the reactive oxygen species (ROS): A review　　　　　　　　　　　　　　　
  Myat Sandar Win; Zhengyang Tian; Hui Zhao; Kai Xiao; Jiaxian Peng; Yu Shang; Minghong Wu; Guangli Xiu; Senlin Lu; Shinich Yonemochi; Qingyue Wang
  JOURNAL OF ENVIRONMENTAL SCIENCES, Volume：71, First page：13, Last page：31, Sep. 2018
  Atmospheric humic-like substances (HULIS) are not only an unresolved mixture of macroorganic compounds but also powerful chelating agents in atmospheric particulate matters (PMs); impacting on both the properties of aerosol particles and health effects by generating reactive oxygen species (ROS). Currently, the interests of HULIS are intensively shifting to the investigations of HULIS-metal synergic effects and kinetics modeling studies, as well as the development of HULIS quantification, findings of possible HULIS sources and generation of ROS from HULIS. In light of HULIS studies, we comprehensively review the current knowledge of isolation and physicochemical characterization of HULIS fromatmospheric samples as well as HULIS properties (hygroscopic, surface activity, and colloidal) and possible sources of HULIS. This reviewmainly highlights the generation of reactive oxygen species (ROS) fromPMs, HULIS and transition metals, especially iron. This review also summarized the mechanism of ironorganic complexation and recent findings of OH formation from HULIS-metal complexes. This review will be helpful to carry out the modeling studies that concern with HULIS-transition metals and for further studies in the generation of ROS from HULIS-metal complexes. (C) 2017 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
  SCIENCE PRESS, English, Scientific journal
  DOI：https://doi.org/10.1016/j.jes.2017.12.004
  DOI ID：10.1016/j.jes.2017.12.004, ISSN：1001-0742, eISSN：1878-7320, Web of Science ID：WOS:000447274900003
• Magnetic, geochemical characterization and health risk assessment of road dust in Xuanwei and Fuyuan, China　　　　　　　　　　　　　　　
  Zhengying Tan; Senlin Lu; Hui Zhao; Xiao Kai; Peng Jiaxian; Myat Sandar Win; Shang Yu; Shinich Yonemochi; Qingyue Wang
  ENVIRONMENTAL GEOCHEMISTRY AND HEALTH, Volume：40, Number：4, First page：1541, Last page：1555, Aug. 2018
  As an accumulation of solid organic and inorganic pollutant particles on outdoor ground surfaces, road dust is an important carrier of heavy metal contaminants and can be a valuable medium for characterizing urban environmental quality. Because the dusts can be an important source of atmospheric particles and take impact on human health, the aim of this study described in detail the mineralogical characteristics, morphology, and heavy metal content of road dust from Xuanwei and Fuyuan, locations with high lung cancer incidence. Our results show that the average concentrations of heavy metals in road dust were higher than their background values. Higher concentrations of heavy metals were found in the magnetic fractions (MFs) than in the non-magnetic fractions (NMFs). Magnetic measurements revealed high magnetic susceptibility values in the road dust samples, and the dominant magnetic carrier was magnetite. The magnetic grains were predominantly pseudo-single domain, multi-domain, and coarse-grained stable single domains (coarse SSD) in size. SEM/XRD analysis identified two groups of magnetic particles: spherules and angular/aggregate particles. Hazard index (HI) values for adults exposure to road dust samples, including MF, Bulk, and NMF, in both areas were lower or close to safe levels, while HI values for childhood exposure to magnetic fractions in both areas were very close or higher than safe levels. Cancer risks from road dust exposure in both areas were in the acceptable value range.
  SPRINGER, English, Scientific journal
  DOI：https://doi.org/10.1007/s10653-018-0070-7
  DOI ID：10.1007/s10653-018-0070-7, ISSN：0269-4042, eISSN：1573-2983, Web of Science ID：WOS:000439474700024
• Operando Raman-online FTIR investigation of ceria, vanadia/ceria and gold/ceria catalysts for toluene elimination　　　　　　　　　　　　　　　
  Qingyue Wang; King Lun Yeung; Miguel A. Banares
  JOURNAL OF CATALYSIS, Volume：364, First page：80, Last page：88, Aug. 2018
  Toluene oxidation on three ceria catalysts, CeO2, VOx/CeO2 and Au/CeO2, was investigated by an operando Raman-online FTIR reactor cell. The reactive surface oxygen sites were preferred sites for vanadium and gold deposition. The deposited vanadium existed as V5+, while most of the gold was in Au+ state and roughly a third of ceria was in the reduced Ce3+ state. The Au/CeO2 and CeO2 catalysts (T-50(*)= 260 and 290 degrees C) were more active and selective toward the complete oxidation of toluene than VOx/CeO2 catalyst (T*(50) = 370 degrees C), where T*(50) refers to the temperature for 50% of CO2 yield. The eta(2)-peroxide O-2ads(2-) ads was detected on Au/CeO2 and CeO2 catalysts, where toluene molecules preferentially adsorbed parallel to the surface via pi-bonding. Au/CeO2 gave complete combustion producing mainly CO2. On the other hand, eta(1)-superoxide O-2(-) ads was found on VOx/CeO2 catalyst and the toluene molecule adsorbed via sigma-bonding forming carbenium ions on the vanadia Bronsted acid sites. This catalyst produced significant amount of benzaldehyde as partial oxidation byproduct and CO (<25%). The nature of the active sites, configurational adsorption of toluene and the reactive oxygen species play important roles in the catalyst activity and selectivity leading to a large contrast in the catalytic behavior of the CeO2, VOx/CeO2 and Au/CeO2 catalysts. (C) 2018 Elsevier Inc. All rights reserved.
  ACADEMIC PRESS INC ELSEVIER SCIENCE, English, Scientific journal
  DOI：https://doi.org/10.1016/j.jcat.2018.05.001
  DOI ID：10.1016/j.jcat.2018.05.001, ISSN：0021-9517, eISSN：1090-2694, Web of Science ID：WOS:000440391600009
• Size distribution and sources of 37 toxic species of particulate polycyclic aromatic hydrocarbons during summer and winter in Baoshan suburban area of Shanghai, China (Retraction of Vol 566, Pg 1519, 2016)　　　　　　　　　　　　　　　
  Qingyue Wang; Keisuke Kobayashi; Weiqian Wang; Jie Ruan; Daisuke Nakajima; Mayuko Yagishita; Senlin Lu; Wenchao Zhang; Miho Suzukia; Tomoya Saitou; Kazuhiko Sekiguchi; Kenshi Sankoda; Yuji Takao; Masaki Nagae; Masanori Terasaki
  SCIENCE OF THE TOTAL ENVIRONMENT, Volume：626, First page：1507, Last page：1507, Jun. 2018
  The objectives of this study were to assess the size-segregated distribution and sources of 37 different species of particulate polycyclic aromatic hydrocarbons (PAHs) in a suburban area of Shanghai metropolitan City, China. The ambient particulate sampling was carried out on the rooftop of a five-stories building in Baoshan campus of Shanghai University. An Andersen high-volume air sampler was employed to collect ambient size-segregated particulate matter during summer of August to September and winter of November to December 2015. The high toxic PAHs were determined by a gas chromatography mass spectrometry. The concentrations of total PAHs in suspended particulate matter (SPM) and PM1.1 (suspended particulate matter below 1.1 mu m in diameter) in the suburban area of Shanghai were 4.58-14.5 ng/m(3) and 1.82-8.56 ng/m(3), respectively in summer, and 43.6-160 ng/m(3) and 23.2-121 ng/m(3), separately in winter. 1,8-Naphthalic anhydride (1,8-NA) showed the highest concentration among 37 different species of PAHs in the suburban area of Shanghai. The concentrations of high molecular PAHs (e.g. 5-6 ring PAHs) followed a nearly unimodal size distribution with the highest peaks in PM1.1. The diagnostic ration qualitatively indicated that PAHs in SPM of Shanghai were mainly derived from motor-vehicle or petroleum combustion in summer and from coal and biomass combustion in winter. According to the calculated toxicity equivalency factors based on the methods of Nisbet and Lagoy and the potency equivalency factors (PEF) recommended by U.S. EPA, the highest contributors in the total carcinogenicity of the PAHs in SPM and PM1.1 were dibenzo[a,h] pyrene (46.2% and 45.0% in summer), benzo[a] pyrene (44.4% and 43.8% in winter) and benz[j] aceanthrylene (80.2% and 83.1% in summer and 83.1% and 84.0% in winter), respectively. Therefore, benzo[a] pyrene seemed to be a lower contributor than other carcinogenic PAHs. (C) 2016 Elsevier B.V. All rights reserved.
  ELSEVIER, English, Scientific journal
  DOI：https://doi.org/10.1016/j.scitotenv.2018.02.158
  DOI ID：10.1016/j.scitotenv.2018.02.158, ISSN：0048-9697, eISSN：1879-1026, Web of Science ID：WOS:000428194000149
• Femtosecond Fiber Amplification System Based on Third-Order Dispersion Compensation Technique　　　　　　　　　　　　　　　
  Hao Jingyu; Liu Bowen; Song Huanyu; Wen Liang; Niu Jia; Chai Lu; Hu Minglie; Wang Qingyue
  LASER & OPTOELECTRONICS PROGRESS, Volume：55, Number：5, May 2018
  A high-power and high-pulse-quality femtosecond all fiber laser amplification system is constructed based on the negative third-order dispersion compensation with fiber chirped pulse amplification technology. In the proposed system, the polarization maintaining large mode field of the double-clad Yb-doped fiber and the negative third-order dispersion fiber and the normal polarization maintaining fiber are utilized as the gain medium and mixed fiber stretcher, respectively. Moreover, a pre-compensation of third-order dispersion is implemented while the widening of the time domain is realized, therefore a high-quality and high-power laser is obtained. In the experiment, we use the hybrid fiber stretcher and a 1200 line.mm(-1) grating-pair as the compressor, and make the net third-order dispersion of the system approach zero. Consequently, we obtain a high-quality dechirp pulse with central wavelength of 1035 nm and pulse duration of 217 fs. In addition, average output power of 8.5 W at repetition rate of 111 MHz is achieved.
  SHANGHAI INST OPTICS & FINE MECHANICS, CHINESE ACAD SCIENCE, Chinese, Scientific journal
  DOI：https://doi.org/10.3788/LOP55.051404
  DOI ID：10.3788/LOP55.051404, ISSN：1006-4125, Web of Science ID：WOS:000549819600034
• Research Progress of Nonlinear Frequency Conversion Technology Based on Fiber Femtosecond Lasers　　　　　　　　　　　　　　　
  Zhao Jun; Hu Minglie; Fan Jintao; Liu Bowen; Song Youjian; Chai Lu; Wang Qingyue
  LASER & OPTOELECTRONICS PROGRESS, Volume：55, Number：4, Apr. 2018
  Over the last decade, there have been spectacular development in nonlinear frequency conversion techniques, due to the development of improved nonlinear materials together with the evolution of femtosecond pump lasers. Compared with traditional laser sources, nonlinear conversion techniques represent a simple and effective approach to the direct generation of widely tunable and broadband coherent radiation breaking through the limited bandwidth of gain medium. And thus such techniques arc of great interests for different applications. Up to now, our group has built up a variety of high power fiber lasers successfully, which provides a cornerstone for the nonlinear frequency conversion. We review the recent process developments in nonlinear frequency conversion techniques driven by photonics crystal femtosecond fiber lasers, especially in the last five years, including optical parametric oscillators (OPOs), excellent frequency up conversion based on GaAs nanowires, supercontinuum generation and third harmonic generation based on highly nonlinear photonic crystal fibers. In addition, basic principles and some advanced applications arc also discussed in this review.
  SHANGHAI INST OPTICS & FINE MECHANICS, CHINESE ACAD SCIENCE, Chinese
  DOI：https://doi.org/10.3788/LOP55.040001
  DOI ID：10.3788/LOP55.040001, ISSN：1006-4125, Web of Science ID：WOS:000549895000001
• Operando Raman-online FTIR investigation on the role of vanadium and gold doping on ceria-based catalysts for toluene elimination　　　　　　　　　　　　　　　
  Miguel Banares; Qingyue Wang; Weiyang Chen; King Lun Yeung
  ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Volume：255, Mar. 2018
  AMER CHEMICAL SOC, English
  ISSN：0065-7727, Web of Science ID：WOS:000435537702190
• Allergenicity of recombinant Humulus japonicus pollen allergen 1 after combined exposure to ozone and nitrogen dioxide　　　　　　　　　　　　　　　
  Qiang Hong; Shumin Zhou; Hui Zhao; Jiaxian Peng; Yang Li; Yu Shang; Minghong Wu; Wei Zhang; Senlin Lu; Shuijun Li; Shen Yu; Weiqian Wang; Qingyue Wang
  ENVIRONMENTAL POLLUTION, Volume：234, First page：707, Last page：715, Mar. 2018
  Ozone (O-3) and nitrogen dioxide (NO2) are thought to play primary roles in aggravating air pollution induced health problems. However, the effects of joint O-3/NO2 on the allergenicity of pollen allergens are unclear. Humulus japonicus pollen allergen 1 (Hum j1) is a profilin protein that causes widespread pollinosis in eastern Asia. In order to study the effects of combined O-3/NO2 on the allergenicity of Hum j1, tandem six-histidine peptide tag (His6)-fused recombinant Hum j1 (rHum j1) was expressed in a prokaryotic system and purified through His6 affinity chromatography. The purified rHum j1 was used to immunize SD rats. Rat sera with high titers of IgG and IgE antibodies against rHum j1 were used for allergenicity quantification. The rHum j1 was exposed to O-3/NO2, and changes in allergenicity of the exposed rHum j1 were assayed using the immunized rat antibodies. Tandem LC-MS/LC (liquid chromatography-mass spectrometer/liquid chromatography spectrometer) chromatography and UV and circular dichroism (CD) spectroscopy were used to study the structural changes in rHum j1. Our data demonstrated that a novel disulfide bond between the sulfhydryl groups of two neighboring cysteine molecules was formed after the rHum j1 exposure to joint O-3/NO2, and therefore IgE-binding affinity was increased and the allergenicity was reinforced. Our results provided clues to elucidate the mechanism behind air pollution-induced increase in pollinosis prevalence. (C) 2017 Elsevier Ltd. All rights reserved.
  ELSEVIER SCI LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.envpol.2017.11.078
  DOI ID：10.1016/j.envpol.2017.11.078, ISSN：0269-7491, eISSN：1873-6424, Web of Science ID：WOS:000426225100074
• Operando reaction study of toluene oxidation over ceria catalysts　　　　　　　　　　　　　　　
  Qingyue Wang; Manuel Arjona Alonso; Miguel Banares; King Lun Yeung
  ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Volume：255, Mar. 2018
  AMER CHEMICAL SOC, English
  ISSN：0065-7727, Web of Science ID：WOS:000435537702267
• Survey of inorganic components in atmospheric particles of three urban areas caused by winter energy consumption in China and Japan　　　　　　　　　　　　　　　
  Qingyue Wang; Weiqian Wang
  WIT Transactions on Ecology and the Environment, Volume：217, First page：469, Last page：479, 2018
  Today, countries around the world are continuing to advance economically, putting a great strain on the ability of the natural environment to process the high level of pollutants being created. In recent years, the increase in fossil fuel consumption, especially in China, is significant, due to advancing economic development. Air pollution, such as suspended particle matter emitted from anthropogenic sources, has already become a serious regional problem for the urban environment, and could be an important inhibitory factor for sustainable development. In this paper, the atmospheric inorganic compositions of three urban areas - Saitama city in the Tokyo metropolitan area, Nagasaki city in Japan and Shanghai metropolitan area in China - were determined during the winter of 2015. The results showed that water-soluble components such as sulfate ion (SO4 2- ), nitrate ion (NO3 - ) and potassium ion (K + ), as secondary particles of anthropogenic combustion sources, increase in the order of Shanghai >
  Nagasaki >
  Saitama, and are several times higher in Shanghai compared with those of the other sampling sites. It was confirmed that serious air pollution events create nitrogen oxides, and sulfur oxides are caused by fossil fuel consumption. It might be possible that the urban air pollutants of fossil-fuel-burning sources were transported to Japan by “long-range transportation”. As we can see from the analytical results from the Shanghai urban area, the main source of anthropogenic pollution is commonly the exhaust emitted from motor vehicles. However, trace elements such as arsenic (As), selenium (Se), vanadium (V) and nickel (Ni) of coal and petroleum oil combustion were higher in the Nagasaki urban area than in the Saitama urban area. It was indicated that the urban air pollution in Shanghai, due to the presence of inorganic components caused by seasonal energy consumption, were much higher than in Japan during the winter sampling periods. It could be considered that the air pollutants were transported to Japan via long-range transportation. According to these experimental findings, it is evident that China's energy structure requires improvement if progress is to be made in sustainable development.
  WITPress, English, Scientific journal
  DOI：https://doi.org/10.2495/SDP180421
  DOI ID：10.2495/SDP180421, ISSN：1743-3541, SCOPUS ID：85062888936
• Decayed woody material from mushroom cultivation: Characterization of liquefaction　　　　　　　　　　　　　　　
  Qingyue Wang; Sayuri Kawamura
  WIT Transactions on Ecology and the Environment, Volume：217, First page：481, Last page：492, 2018
  Decayed woody material from mushroom cultivation is one of the most important waste materials in Japan, as almost 300 tonnes are released each year. It is nearly impossible to reuse these resources, because of the damage to its original form and deterioration of its strength. These decayed woody materials could be used to create a valid chemical product from the main components' decomposition: this could reduce waste material and its environmental impact, especially in developing countries. This article focuses on the liquefied portion of decayed woody materials that is released from mushroom cultivation. By analysis of the products from major woody holocellulose (i.e. cellulose and hemicellulose) and lignin, we found the same ratios of weight loss in decayed woody samples, compared with the original woody samples. All the main components of the decayed wood were partially degraded. The crystallinities within woody samples were decreased with sufficient long-term decay. After these decayed woody samples were liquefied and compared with the original samples, we conducted liquefaction tests using ethylene glycol, glycerine, and the catalyst sulfuric acid. The ratios of residue during liquefaction showed that the liquefied characteristics of decayed woody material released from mushroom cultivation were equal to or less than that of the original wood. In addition, the results as determined by a Fourier-transform infrared spectroscopy showed that the liquefied ratios of decayed woody samples could be equal to or higher than those original woody samples without decay.
  WITPress, English, Scientific journal
  DOI：https://doi.org/10.2495/SDP180431
  DOI ID：10.2495/SDP180431, ISSN：1743-3541, SCOPUS ID：85062885303
• Arbuscular mycorrhiza confers lead tolerance and uptake in Miscanthus sacchariflorus　　　　　　　　　　　　　　　
  Animesh Sarkar; Takashi Asaeda; Qingyue Wang; Yasuko Kaneko; Md H. Rashid
  CHEMISTRY AND ECOLOGY, Volume：34, Number：5, First page：454, Last page：469, 2018
  The effects of an arbuscular mycorrhizal fungi (AMF) association on the growth, survival capabilities, nutrients and lead (Pb) uptake of Miscanthus sacchariflorus under different Pb concentrations were studied in the form of pot cultures. The treatments comprised inoculation or non-inoculation of the AMF, Gigaspora margarita, and the addition of three Pb concentrations to the soil (0, 100 and 1000 mg kg(-1)). The addition of Pb significantly decreased mycorrhizal colonisation. The inoculation of AMF with Pb increased chlorophyll content, Fv/Fm, total dry mass, indole-3-acetic acid (IAA), total nitrogen, and total phosphorus, whereas H2O2 level, indole-3-acetic acid oxidase (IAAO) activity, and peroxidase (POD) activity were low compared to those in the non-inoculated treatments. Moreover, the application of AMF together with Pb doses induces concentrations of Pb in the plant, where the higher dose of Pb (1000 mg kg(-1)) induces a lower content of Pb in the aerial part of the plant but a higher content in the root. G. margarita enhanced the tolerance of M. sacchariflorus against Pb toxicity, and facilitated the accumulation of Pb in the plant roots, whereas translocation to the shoots was inhibited at the highest dose Pb (1000 mg kg(-1)). However, in contaminated soil, the Pb removal capability of M. sacchariflorus with AMF was remarkable.
  TAYLOR & FRANCIS LTD, English, Scientific journal
  DOI：https://doi.org/10.1080/02757540.2018.1437150
  DOI ID：10.1080/02757540.2018.1437150, ISSN：0275-7540, eISSN：1029-0370, Web of Science ID：WOS:000429073400005
• A Sequence Transformation Model for Chinese Named Entity Recognition　　　　　　　　　　　　　　　
  Qingyue Wang; Yanjing Song; Hao Liu; Yanan Cao; Yanbing Liu; Li Guo
  KNOWLEDGE SCIENCE, ENGINEERING AND MANAGEMENT (KSEM 2018), PT I, Volume：11061, First page：491, Last page：502, 2018
  Chinese Named Entity Recognition (NER), as one of basic natural language processing tasks, is still a tough problem due to Chinese polysemy and complexity. In recent years, most of previous works regard NER as a sequence tagging task, including statistical models and deep learning methods. In this paper, we innovatively consider NER as a sequence transformation task in which the unlabeled sequences (source texts) are converted to labeled sequences (NER labels). In order to model this sequence transformation task, we design a sequence-to-sequence neural network, which combines a Conditional Random Fields (CRF) layer to efficiently use sentence level tag information and the attention mechanism to capture the most important semantic information of the encoded sequence. In experiments, we evaluate different models both on a standard corpus consisting of news data and an unnormalized one consisting of short messages. Experimental results showed that our model outperforms the state-of-the-art methods on recognizing short interdependence entity.
  SPRINGER INTERNATIONAL PUBLISHING AG, English, International conference proceedings
  DOI：https://doi.org/10.1007/978-3-319-99365-2_44
  DOI ID：10.1007/978-3-319-99365-2_44, ISSN：0302-9743, eISSN：1611-3349, Web of Science ID：WOS:000886458900045
• Human fibulin-3 protein variant expresses anti-cancer effects in the malignant glioma extracellular compartment in intracranial xenograft models　　　　　　　　　　　　　　　
  Yanyan Li; Yuan Hu; Chuanjin Liu; Qingyue Wang; Xiaoxiao Han; Yong Han; Xue-Shun Xie; Xiong-Hui Chen; Xiang Li; Eric R. Siegel; Kambiz Afrasiabi; Mark E. Linskey; You-Xin Zhou; Yi-Hong Zhou
  ONCOTARGET, Volume：8, Number：63, First page：106311, Last page：106323, Dec. 2017
  Background: Decades of cytotoxic and more recently immunotherapy treatments for malignant glioma have had limited success due to dynamic intra-tumoral heterogeneity. The dynamic interplay of cancer cell subpopulations has been found to be under the control of proteins in the cancer microenvironment. EGF-containing fibulin-like extracellular matrix protein (EFEMP1) (also fibulin-3) has the multiple functions of suppressing cancer growth and angiogenesis, while promoting cancer cell invasion. EFEMP1-derived tumor suppressor protein (ETSP) retains EFEMP1' s anti-growth and anti-angiogenic functions while actually inhibiting cancer cell invasion. Methods: In this study, we examined the therapeutic effect on glioblastoma multiforme (GBM) of an in vitro synthesized protein, ZR30, which is based on the sequence of ETSP, excluding the signaling peptide. Results: ZR30 showed the same effects as ETSP in blocking EGFR/NOTCH/AKT signaling pathways, when applied to cultures of multiple GBM cell lines and primary cultures. ZR30' s inhibition of MMP2 activation was shown not only for GBM cells, but also for other types of cancer cells having overexpression of MMP2. A significant improvement in survival of mice with orthotopic human GBM xenografts was observed after a single, intra-tumoral injection of ZR30. Using a model mimicking the intra-tumoral heterogeneity of GBM with cell subpopulations carrying different invasive and proliferative phenotypes, we demonstrated an equal and simultaneous tumor suppressive effect of ZR30 on both tumor cell subpopulations, with suppression of FOXM1 and activation of SEMA3B expressions in the xenografts. Conclusion: Overall, the data support a complementary pleiotrophic therapeutic effect of ZR30 acting in the extracellular compartment of GBM.
  IMPACT JOURNALS LLC, English, Scientific journal
  DOI：https://doi.org/10.18632/oncotarget.22344
  DOI ID：10.18632/oncotarget.22344, eISSN：1949-2553, Web of Science ID：WOS:000419534900028
• Single particle aerosol mass spectrometry of coal combustion particles associated with high lung cancer rates in Xuanwei and Fuyuan, China　　　　　　　　　　　　　　　
  Senlin Lu; Zhengying Tan; Pinwei Liu; Hui Zhao; Dingyu Liu; Shang Yu; Ping Cheng; Myat Sandar Win; Jiwen Hu; Linwei Tian; Minghong Wu; Shinich Yonemochi; Qingyue Wang
  CHEMOSPHERE, Volume：186, First page：278, Last page：286, Nov. 2017
  Coal combustion particles (CCPs) are linked to the high incidence of lung cancer in Xuanwei and in Fuyuan, China, but studies on the chemical composition of the CCPs are still limited. Single particle aerosol mass spectrometry (SPAMS) was recently developed to measure the chemical composition and size of single particles in real-time. In this study, SPAMS was used to measure individual combustion particles emitted from Xuanwei and Fuyuan coal samples and the results were compared with those by ICP-MS and transmission electron microscopy (TEM). The total of 38,372 particles mass-analyzed by SPAMS can be divided into 9 groups based on their chemical composition and their number percentages: carbonaceous, Na-rich, K-rich, Al-rich, Fe-rich, Si-rich, Ca-rich, heavy metal-bearing, and PAH-bearing particles. The carbonaceous and PAH-bearing particles are enriched in the size range below 0.56 mu m, Fe-bearing particles range from 0.56 to 1.0 mu m in size, and heavy metals such as Ti, V, Cr, Cu, Zn, and Pb have diameters below 1 mu m. The TEM results show that the particles from Xuanwei and Fuyuan coal combustion can be classified into soot aggregates, Fe-rich particles, heavy metal containing particles, and mineral particles. Non-volatile particles detected by SPAMS could also be observed with TEM. The number percentages by SPAMS also correlate with the mass concentrations measured by ICP-MS. Our results could provide valuable insight for understanding high lung cancer incidence in the area. (C) 2017 Elsevier Ltd. All rights reserved.
  PERGAMON-ELSEVIER SCIENCE LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.chemosphere.2017.07.161
  DOI ID：10.1016/j.chemosphere.2017.07.161, ISSN：0045-6535, eISSN：1879-1298, Web of Science ID：WOS:000411846900033
• Response of Miscanthus sacchariflorus to zinc stress mediated by arbuscular mycorrhizal fungi　　　　　　　　　　　　　　　
  Animesh Sarkar; Takashi Asaeda; Qingyue Wang; Yasuko Kaneko; Md H. Rashid
  FLORA, Volume：234, First page：60, Last page：68, Sep. 2017
  Arbuscular mycorrhizal (AM) fungi have the ability to promote growth of the associated plants by enhancing water and nutrient uptake. In the present study, we aimed to explore the performance of Miscanthus sacchariflorus under different soil zinc (Zn) levels in association with inoculated AM fungi. M. sacchariflorus was grown in a greenhouse with three doses of added Zn (0, 100 and 1000 mg kg(-1) soil) in combination with or without association of AM fungi, and its growth, oxidative stress levels, and ultrastructure were observed. The additions of medium levels of Zn (100 mg kg-1) did not show significant effects on mycorrhizal colonization; however, when the Zn addition level was 1000 mg kg(-1), the mycorrhizal infection rate slightly decreased in comparison to the no Zn addition treatment (control). Inoculation of AM with 100 mg kg(-1) Zn addition increased chlorophyll concentration, Fv/Fm, total dry mass, concentrations of indole acetic acid, total nitrogen and total phosphorus, and content of Zn, whereas activity levels of peroxidase and indole acetic acid oxidase, and H2O2 levels were low when compared with the other two treatments. 1000 mg kg(-1) Zn addition resulted in lower Zn contents in the aerial parts of inoculated compared to non-inoculated plants. Zn crystals in the root parenchyma of mycorrhizal plants were observed. These results open the possibility of using arbuscular mycorrhizal fungi symbiotic Miscanthus plants in phytoremediation as well as to grow them in Zn-deficient soils. (C) 2017 Elsevier GmbH. All rights reserved.
  ELSEVIER GMBH, English, Scientific journal
  DOI：https://doi.org/10.1016/j.flora.2017.05.011
  DOI ID：10.1016/j.flora.2017.05.011, ISSN：0367-2530, eISSN：1618-0585, Web of Science ID：WOS:000416738300007
• Comparison of Plant-derived Carbonaceous Components (Organic Molecular Markers and (14)carbon) in PM2.5 in Summer and Autumn at Kazo, Japan　　　　　　　　　　　　　　　
  Kouki Sasaka; Qingyue Wang; Kazuhiko Sakamoto
  ASIAN JOURNAL OF ATMOSPHERIC ENVIRONMENT, Volume：11, Number：3, First page：165, Last page：175, Sep. 2017
  In Japan, the primary carbonaceous particles emitted from motor vehicles and waste incinerators have been reduced due to strict regulations against exhaust gas. However, the relative contribution of carbonaceous particles derived from plants and bio-mass has been increasing. Accordingly, compositional analysis of carbonaceous particles has become increasingly important to determine the sources and types of particles produced. To reveal the sources of the organic particles contained in particulate matter with diameters of <= 2.5 mu m (PM2.5) and the processes involved in their generation, we analyzed molecular marker compounds (2-methyltetrols, cis-pinonic acid, and levoglucosan) derived from the plants and biomass in the PM2.5 collected during daytime-and nighttime-sampling periods in summer (July and August) and autumn (November) in Kazo, which is in the northern area of Saitama prefecture, Japan. We also measured C-14 carbonaceous concentrations in the same PM2.5 samples. The concentrations of 2-methyltetrols were higher in the summer than in the autumn. Because the deciduous period overlaps with this decrease in the levels of 2-methyltetrols, we considered the emission source to broad-leaved trees. In contrast, the emission source of the cispinonic acid precursor was considered to be conifers, because its concentration remained almost constant throughout the year. The concentration of levoglucosan was considerably increased in the autumn due to frequent biomass open burning. The ratio of plant-derived carbon to total carbon, obtained by measuring of C-14, in summer PM2.5 sample was higher in the nighttime, and could be influenced by anthropogenic sources during the daytime.
  JAPAN SOC ATMOSPHERIC ENVIRONMENT, English, Scientific journal
  DOI：https://doi.org/10.5572/ajae.2017.11.3.165
  DOI ID：10.5572/ajae.2017.11.3.165, ISSN：1976-6912, eISSN：2287-1160, Web of Science ID：WOS:000416967000003
• Species of Iron in Size-resolved Particle Emitted from Xuanwei Coal Combustion and Their Oxidative Potential　　　　　　　　　　　　　　　
  Qiang-Xiang Wang; Zheng-Ying Tan; Hui Zhao; Ji-Hua Li; Lin-Wei Tian; Qing-Yue Wang; Shinich Yonemochi; Sen-Lin Lü
  Huanjing Kexue/Environmental Science, Volume：38, Number：6, First page：2273, Last page：2279, Jun. 2017
  Many reports have claimed that high lung cancer mortality rate in Xuanwei is associated with the residential coal combustion. Considering iron is the main chemical element in the particles emitted from Xuanwei coal combustion, and especially, reactive oxygen species (ROS) could be generated by redox-active transition metals (TM) such as iron (Fe) in particles, therefore, raw coal samples from 4 coal mines in Xuanwei were sampled, and size-resolved particles emitted from the raw coal samples were collected by using of Andersen Five-stage High Volume Sampler. Species of iron in the raw coal sample, size-resolved particles and bottom ashes were analyzed by BCR sequential extraction method (community bureau of reference, BCR). The generation potential of ·OH free radicals from coal emission particles in the surrogate lung fluid (SLF) solution was measured by using high pressure liquid chromatography (HPLC). Our results demonstrated that a large fraction of oxidizable Fe could be found in raw coal samples. However, the acid extractable, reducible and oxidizable fractions of Fe in the fly ash particles accounted for a large proportion (46%-78%) in the size-resolved particles after coal combustion. There was difference in levels of ·OH free radicals generated from coal emission particles in the SLF for 24 hours among particles with different sizes. The concentration of ·OH increased in both fine particles (<
  1 μm, 1.1-2 μm, 2-3.3 μm) and coarse particles (3.3-7 μm, >
  7 μm) as the particles size decreased. Linear correlation could be found between the oxidizable fractions of iron and the generation of ·OH in particles emitted from coal combustion (R2=0.32).
  Science Press, Chinese, Scientific journal
  DOI：https://doi.org/10.13227/j.hjkx.201611110
  DOI ID：10.13227/j.hjkx.201611110, ISSN：0250-3301, PubMed ID：29965343, SCOPUS ID：85029453925
• Temperature tunable cascaded energy transfer during femtosecond nonlinear frequency conversion process　　　　　　　　　　　　　　　
  Shuanggen Zhang; Kaili Zhai; Wenchao You; Xiurong Ma; Minglie Hu; Qingyue Wang
  MATERIALS LETTERS, Volume：197, First page：56, Last page：58, Jun. 2017
  The paper reports a combined experimental and theoretical study of temperature dependent energy transfer process of second harmonic generation from a broadband ultrashort pulse by using the periodically poled lithium niobate crystal. It was found that a narrowband SH beam can be generated and the tuning of their central wavelength was realized by the temperature or the amount of the phasemismatching of the nonlinear crystal under large group velocity mismatch. The experimental results were well fitted by the numerical simulations on the basis of the coupled equations for the cascaded nonlinear process. The investigation allow us to provide a promising method to achieve a narrow-band, dense and efficient multi-frequency device. (C) 2017 Elsevier B.V. All rights reserved.
  ELSEVIER SCIENCE BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.matlet.2017.03.156
  DOI ID：10.1016/j.matlet.2017.03.156, ISSN：0167-577X, eISSN：1873-4979, Web of Science ID：WOS:000399500300016
• MicroRNA-140-5p inhibits cell proliferation and invasion by regulating VEGFA/MMP2 signaling in glioma　　　　　　　　　　　　　　　
  Yuan Hu; Yanyan Li; Chun Wu; Liang Zhou; Xiaoxiao Han; Qingyue Wang; Xueshun Xie; Youxin Zhou; Ziwei Du
  TUMOR BIOLOGY, Volume：39, Number：4, Apr. 2017
  Glioma is the most common primary malignant tumor of the central nervous system, which results in both a poor prognosis and outcome because of the aggressive progression of disease, growth and resistance to surgery, chemotherapy, and radiotherapy. MiR-140-5p is a small, non-coding single-stranded RNA molecule, which was previously studied in the settings of human tongue cancer, hepatocellular carcinoma, and colorectal cancer. However, detailed data that formally demonstrate the contribution of miR-140-5p to glioma development are missing. Similarly, relatively little is known about the relationship of miR-140-5p, vascular endothelial growth factor A, and matrix metalloproteinase-2 in glioma progression. In this study, we found that miR-140-5p expression was significantly decreased in glioma tissues and in the glioma cell-lines U87 and U251 as compared with non-cancerous brain tissues by quantitative real-time polymerase chain reaction. In addition, miR-140-5p inhibited glioma cell proliferation and invasion and promoted glioma cell apoptosis both in vivo and in vitro. Interestingly, while the expression levels of miR-140-5p were higher in glioma cells, the messenger RNA or protein expression levels of vascular endothelial growth factor A and matrix metalloproteinase-2 were lower in glioma cells as determined by quantitative real-time polymerase chain reaction, western blot assay, and immunohistochemistry. By contrast, downregulation in the expression levels of miR-140-5p augmented the messenger RNA and protein expression levels of both vascular endothelial growth factor A and matrix metalloproteinase-2. These findings suggested that miR-140-5p inhibited glioma proliferation and invasion by regulating the vascular endothelial growth factor A/matrix metalloproteinase-2 signaling pathway both in vitro and in vivo.
  SAGE PUBLICATIONS LTD, English, Scientific journal
  DOI：https://doi.org/10.1177/1010428317697558
  DOI ID：10.1177/1010428317697558, ISSN：1010-4283, eISSN：1423-0380, Web of Science ID：WOS:000400268800043
• Operando Raman-FTIR study of gold catalysts supported on titania and ceria for VOC-related odor elimination　　　　　　　　　　　　　　　
  Qingyue Wang; Pedro Avila; Miguel Banares; King Lun Yeung
  ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Volume：253, Apr. 2017
  AMER CHEMICAL SOC, English
  ISSN：0065-7727, Web of Science ID：WOS:000430568502710
• Size distribution of allergenic Cry j 2 released from airborne Cryptomeria japonica pollen grains during the pollen scattering seasons　　　　　　　　　　　　　　　
  Xiumin Gong; Qingyue Wang; Senlin Lu; Miho Suzuki; Daisuke Nakajima; Kazuhiko Sekiguchi; Makoto Miwa
  AEROBIOLOGIA, Volume：33, Number：1, First page：59, Last page：69, Mar. 2017
  Japanese cedar (Cryptomeria japonica) pollinosis is one of seasonal allergic rhinitis that mainly occurs in Japan. The pollinosis is caused by two main kinds of allergenic proteins called Cry j 1 and Cry j 2 which exist in Cryptomeria japonica pollen. In our previous study, we reported that the size-segregated of airborne fine allergenic Cry j 1 and morphological change of Cry j 1 due to the contact with rainfall. However, the study on airborne allergenic Cry j 2 in different particle sizes has not been identified until now. Therefore, the main aim of this study is to investigate the size distribution and scattering behavior of allergenic Cry j 2. The Cry j 2 particles were collected and determined in different particle sizes at the urban sampling points during the most severe pollination season of 2012 in Saitama, Japan. After the size-segregated Cry j 2 allergenic particles were collected using an Andersen high-volume (AHV) atmospheric sample, the airborne Cry j 2 concentrations were determined with a surface plasmon resonance (SPR) method. At the same time, the airborne Cryptomeria japonica pollens were also counted by the Durham pollen sampler. The higher concentrations of the allergenic Cry j 2 were detected even in particle sizes equal to or less than 1.1 mu m (PM1.1) than other particle sizes. The airborne particles ranges from 0.06 to 11 mu m were also collected by a low-pressure impactor (LPI) atmospheric sampler. After that, the concentrations of Cry j 2 allergenic particles in fine particle sizes were measured by the SPR method either. With the help of this study, we have confirmed the existence of fine daughter allergenic particles, which clearly differ from the parent pollen grains in size, especially after the rainy days. It is possible that the daughter allergenic species will be released from the fractions of cell wall and burst pollen grains. We concluded that rainwater was one of the important factors that affects the release of pollen allergenic proteins of both Cry j 1 and Cry j 2 from the parent pollen grains.
  SPRINGER, English, Scientific journal
  DOI：https://doi.org/10.1007/s10453-016-9450-6
  DOI ID：10.1007/s10453-016-9450-6, ISSN：0393-5965, eISSN：1573-3025, Web of Science ID：WOS:000394353400006
• Periodic disruptions induced by high repetition rate femtosecond pulses on magnesium-oxide-doped lithium niobate surfaces　　　　　　　　　　　　　　　
  Shuanggen Zhang; Hongli Kan; Kaili Zhai; Xiurong Ma; Yiming Luo; Minglie Hu; Qingyue Wang
  LASER PHYSICS, Volume：27, Number：2, Feb. 2017
  In this paper, we demonstrate the periodic disruption formation on magnesium-oxide-doped lithium niobate surfaces by a femtosecond fiber laser system with wavelength and repetition rate of 1040 nm and 52 MHz, respectively. Three main experimental conditions, laser average power, scanning speed, and orientation of sample were systematically studied. In particular, the ablation morphologies of periodic disruptions under different crystal orientations were specifically researched. The result shows that such disruptions consisting of a bamboo-like inner structure appears periodically for focusing on the surface of X-, Y- and Z-cut wafers, which are formed by a rapid quenching of the material. Meanwhile, due to the anisotropic property, the bamboo-like inner structures consist of a cavity only arise from X-and Z-cut orientation.
  IOP PUBLISHING LTD, English, Scientific journal
  DOI：https://doi.org/10.1088/1555-6611/aa4ff2
  DOI ID：10.1088/1555-6611/aa4ff2, ISSN：1054-660X, eISSN：1555-6611, Web of Science ID：WOS:000393660500001
• Geochemical Characteristics and Genesis of Volcanic Rocks of Yixian Formation in Jianping, Western Liaoning　　　　　　　　　　　　　　　
  Yandong Peng; Qingyue Wang
  PROCEEDINGS OF THE 2017 2ND INTERNATIONAL CONFERENCE ON CIVIL, TRANSPORTATION AND ENVIRONMENTAL ENGINEERING (ICCTE 2017), Volume：135, First page：501, Last page：504, 2017
  The volcanic rocksdistributed in Pingzhuang-Machang basin of Jianping countryshould belongs to YixianFormation, thevolcanism may be divided into two subcycles. The volcanic rocks mainly consists of rhyolites, trachyte and trachyandesites. The geochemical characteristicsindicate that the volcanic rocks belong to thehigh-K calc-alkalinemagmatic serious. The volcanic rocks are obviously enriched in large ion lithophile element elements (K, Rb, Sr, Zr, Ba, Pb, Li), and depleted inhigh field-strength element(HFSE) (Nb, Ti, P, Th, U, HREE) as well as compatible elements (Co, Ni, Cr, V). The volcanic rocks is rich in LREE. There is a slight negative Euanomaly, no Ce anomaly. A detailed geochemical discrimination of selected elements allowed us to identify that the volcanic rocks of Yixian Formation mainly derived from the partial melting of lower crust materials, but has been contaminated by upper crustal materials during its ascent process in some degree. The volcanic rocks of Yixian volcanic cycle weregenerated in response to lithosphere inhomogeneous extension in thecontinental intraplateorogenic belt. They have the basic characteristics of continental intra-plate volcanic rocks.
  ATLANTIS PRESS, English, International conference proceedings
  ISSN：2352-5401, Web of Science ID：WOS:000426729600088
• BASIC STUDY ON THE DECAYED BEHAVIOR OF WASTE WOODY SAMPLES CAUSED BY THREE WHITE-ROT FUNGI　　　　　　　　　　　　　　　
  Qingyue Wang; Hideharu Takahashi; Sayuri Kawamura; Shin Hatakeyama
  ENERGY AND SUSTAINABILITY VIII, Volume：224, First page：267, Last page：277, 2017
  In this study, we investigated the decayed behavior of waste woody samples caused by three kinds of white-rot fungi known as Coriolus consors, Coriolus hirsutus and Ischnoderma resinosum, which were selected to prepare and develop the decayed woody samples from original woody biomasses. After 8 weeks of decaying, the weights of all decayed woody samples had decreased. From the results of analysis of the major woody holocellulose and lignin, the same ratios of weight decrement in all decayed woody samples were found when compared with their original woody sample. It seemed that these components had degraded simultaneously. The crystallinities of woody samples had increased even though woody samples were decayed. It was thought that the amorphous parts of cellulose and hemicellulose were decomposed preferentially. We tried to use these decayed woody samples as samples for the liquefaction experiment. It is observed that the decayed woody samples may be liquefied to be the same as their original woody samples basing on the molecular weight distribution, chemical structure and other chemical parameters of the liquefied contents.
  WIT PRESS, English, International conference proceedings
  DOI：https://doi.org/10.2495/ESUS170251
  DOI ID：10.2495/ESUS170251, ISSN：1743-3541, Web of Science ID：WOS:000450031900026
• Monocycle and doublet pulses generation via photon echo in rare-earth-doped optical crystal　　　　　　　　　　　　　　　
  Kai Huang; Shuanggen Zhang; Xiurong Ma; Minglie Hu; Qingyue Wang
  OPTICAL ENGINEERING, Volume：55, Number：12, Dec. 2016
  All-optical pulse generation opens up a field for ultrawideband (UWB) applications. However, controllable pulse width and pulse type are still challenging. Here, we present a theoretical model and stimulated results of monocycle and doublet waveforms generation using programmable optical photon echo progress. We synthesized instantaneously monocycle and doublet waveforms by adjustment of pulse width, pulse amplitude, pulse position, and time interval of subpulses. We verified the possible application of the proposed method to design U. S. Federal Communications Commission-compliant UWB waveforms, and therefore, it may provide an avenue for waveform generation. (C) 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
  SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS, English, Scientific journal
  DOI：https://doi.org/10.1117/1.OE.55.12.126109
  DOI ID：10.1117/1.OE.55.12.126109, ISSN：0091-3286, eISSN：1560-2303, Web of Science ID：WOS:000396372900071
• AN ENGINEERED IN VITRO SYNTHESIZED PROTEIN ZR30 EXPRESSES ITS ANTI-CANCER EFFECT IN THE EXTRACELLULAR COMPARTMENT OF DIFFERENT GLIOMA CELL SUBPOPULATIONS IN INTRACRANIAL XENOGRAFT MODELS　　　　　　　　　　　　　　　
  Yanyan Li; Chuaniin Liu; Qingyue Wang; Xiaoxiao Han; Yong Han; Xiong-Hui Chen; Eric Siegel; Kambiz Afrasiabi; Mark Linskey; You-Xin Zhou; Yi-Hong Zhou
  NEURO-ONCOLOGY, Volume：18, First page：47, Last page：47, Nov. 2016
  OXFORD UNIV PRESS INC, English
  ISSN：1522-8517, eISSN：1523-5866, Web of Science ID：WOS:000398604101129
• Broadband and Efficient Femtosecond Second-Harmonic Generation With Temperature-Dependent Group Velocity Matching　　　　　　　　　　　　　　　
  Shuanggen Zhang; Kaili Zhai; Xiurong Ma; Minglie Hu; Qingyue Wang
  IEEE JOURNAL OF QUANTUM ELECTRONICS, Volume：52, Number：9, Sep. 2016
  I n this paper, a method to achieve the simultaneous quasi-phased-matched and group-velocity-matched second harmonic (SH) generation for femtosecond pulses at 1550 nm band was proposed. Under the polarization configuration (e+e-o), group velocity can be matched by control of temperature. The described coupling equations were applied to MgO doped periodically poled lithium niobate crystal, and the temporal and spectral characteristics of interaction waves were investigated. The fractional time delay between the fundamental frequency wave and the SH wave is as a function of temperature and the input pulse duration, resulting in optimal conversion efficiency. Such method can be useful for the broadband and efficient ultrafast SH pulse generation and pulse compression applications.
  IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, English, Scientific journal
  DOI：https://doi.org/10.1109/JQE.2016.2592819
  DOI ID：10.1109/JQE.2016.2592819, ISSN：0018-9197, eISSN：1558-1713, Web of Science ID：WOS:000381459300001
• Low temperature catalyst for VOC abatement　　　　　　　　　　　　　　　
  Qingyue Wang; Hao Chen; Long Ting Luk; Wei Han; King Lun Yeung
  ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Volume：252, Aug. 2016
  AMER CHEMICAL SOC, English
  ISSN：0065-7727, Web of Science ID：WOS:000431460205101
• Studies on size distribution and health risk of 37 species of polycyclic aromatic hydrocarbons associated with fine particulate matter collected in the atmosphere of a suburban area of Shanghai city, China　　　　　　　　　　　　　　　
  Qingyue Wang; Keisuke Kobayashi; Senlin Lu; Daisuke Nakajima; Weiqian Wang; Wenchao Zhang; Kazuhiko Sekiguchi; Masanori Terasaki
  ENVIRONMENTAL POLLUTION, Volume：214, First page：149, Last page：160, Jul. 2016
  Polycyclic aromatic hydrocarbons (PAHs) in suspended particulate matter (SPM) contribute significantly to health risk. Our objectives were to assess the size distribution and sources of 26 PAHs and 11 polycyclic aromatic compounds (PACs) in SPM in the suburban area, Shanghai city, China. Air sampling was carried out on the rooftop of a five-stories building in the campus of Shanghai University. An Andersen high-volume air sampler was employed to collect ambient size-segregated particles from August to September 2015. The toxic particulate PAHs were determined by the gas chromatography mass spectrometry. The concentrations of total PAHs (TPAHs) in SPM and PM1.1 (suspended particulate matter below 1.1 mu m) were in the ranges of 4.58-14.5 ng m(-3) and 1.82-8.56 ng m(-3), respectively. 1,8-naphthalic anhydride showed the highest concentrations among 37 species of PAHs and PACs ranging 7.76 -47.9 ng m(-3) and 1.50-17.6 ng m(-3) in SPM and PM1.1, respectively. The concentrations of high molecular weight 5-6 ring PAHs followed a nearly unimodal size distribution with the highest peak in PM1.1, while other lower molecular weight PAHs were not dependent on particle sizes. The toxicity analysis indicated that the carcinogenic potency of particulate PAHs primarily existed in PM1.1. Regarding meteorological parameters and other pollutants, the positive effect of humidity and NO2 over PAHs was confirmed. Diagnostic ration indicated that the particulate PAHs in Shanghai were mainly derived from motor vehicle or petroleum combustion. The highest benzo[a]pyrene equivalent (BaPeq) in SPM and PM1.1 were 2.15 ng M-3 and 1.43 ng m(-3) calculated by the toxicity equivalency factor, and 69.31 ng m(-3) and 47.81 ng M-3 estimated by the potency equivalency factors, respectively. The highest contributors in the total carcinogenicity of the particulate PAHs were dibenzo[a,h]pyrene (46.2% and 45.0%) and benz[j] aceanthrylene (80.2% and 83.1%), respectively while benzo[a]pyrene is lower contributor than other carcinogenic PAHs. (C) 2016 Elsevier Ltd. All rights reserved.
  ELSEVIER SCI LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.envpol.2016.04.002
  DOI ID：10.1016/j.envpol.2016.04.002, ISSN：0269-7491, eISSN：1873-6424, Web of Science ID：WOS:000378448600017
• Temperature Dependence of Fiber-Format Multiwavelength Generation Process in Bulk MgO-PPLN Crystal Via High-Power Photonic Crystal Fiber Laser　　　　　　　　　　　　　　　
  Kaili Zhai; Shuanggen Zhang; Xiurong Ma; Youjian Song; Minglie Hu; Qingyue Wang; Kailiang Zhang
  IEEE PHOTONICS JOURNAL, Volume：8, Number：2, Apr. 2016
  In this paper, we report on a compact frequency conversion scheme based on high-power photonic crystal fiber (PCF) laser at optical communication band using a multigrating MgO-PPLN crystal. Temperature dependence of wave-vector mismatch, group velocity, central wavelength, and conversion efficiency was theoretically analyzed. Temperature tuning characteristics were experimentally obtained by propagating 240-fs pulses with a 126-MHz repetition rate in a 10-mm-long MgO-PPLN crystal. We also observed and characterized second-harmonic generation (SHG), third-harmonic generation (THG), and fourth-harmonic generation processes in the same crystal. Maximum SHG and THG conversion efficiency values of 27.5% and 4.3% were achieved at 100 degrees C and 77 degrees C, respectively.
  IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, English, Scientific journal
  DOI：https://doi.org/10.1109/JPHOT.2016.2536364
  DOI ID：10.1109/JPHOT.2016.2536364, ISSN：1943-0655, eISSN：1943-0647, Web of Science ID：WOS:000373053400039
• Mineralogical characterization of ambient fine/ultrafine particles emitted from Xuanwei C1 coal combustion　　　　　　　　　　　　　　　
  Senlin Lu; Xiaojie Hao; Dingyu Liu; Qiangxiang Wang; Wenchao Zhang; Pinwei Liu; Rongci Zhang; Shang Yu; Ruiqi Pan; Minghong Wu; Shinich Yonemochi; Qingyue Wang
  ATMOSPHERIC RESEARCH, Volume：169, First page：17, Last page：23, Mar. 2016
  Nano-quartz in Xuanwei coal, the uppermost Permian (C1) coal deposited in the northwest of Yuanan, China, has been regarded as one of factors which caused high lung cancer incidence in the local residents. However, mineralogical characterization of the fine/ultrafine particles emitted from Xuanwei coal combustion has not previously been studied. In this study, PM1 and ultrafine particles emitted from Xuanwei coal combustion were sampled. Chemical elements in the ambient particles were analyzed by inductively coupled plasma mass spectrometry (ICP-MS), and mineralogical characterization of these ambient particles was investigated using scanning electronic microscopy (SEM/EDX) and transmission electronic microscopy, coupled with energy-dispersive spectroscopy (TEM/EDX). Our results showed that the size distribution of mineral particles from the coal combustion emissions ranged from 20 to 200 nm. Si-containing particles and Fe-containing particles accounted for 50.7% of the 150 individual particles measured, suggesting that these two types of particles were major minerals in the ambient particles generally. The nano-mineral particles were identified as quartz (SiO2) and gypsum (CaSO4) based on their crystal parameters and chemical elements. Additionally, there also existed unidentified nanominerals. Armed with these data, toxicity assessments of the nano-minerals will be carried out in a future study. (C) 2015 Elsevier B.V. All rights reserved.
  ELSEVIER SCIENCE INC, English, Scientific journal
  DOI：https://doi.org/10.1016/j.atmosres.2015.09.020
  DOI ID：10.1016/j.atmosres.2015.09.020, ISSN：0169-8095, eISSN：1873-2895, Web of Science ID：WOS:000366879100002
• Characterization of Microcrystalline Cellulose after Pretreatment with Low Concentrations of Ionic Liquid-H2O for a Pyrolysis Process　　　　　　　　　　　　　　　
  Qiyu Chen; Takumi Endo; Qingyue Wang
  BIORESOURCES, Volume：11, Number：1, First page：159, Last page：173, Feb. 2016
  Microcrystalline cellulose (MCC) samples pretreated by ionic liquid (ILs)-H2O mixtures were studied for application in a pyrolysis process. A 1-ethyl-3- methylimidazolium methanesulfonate [Emim][MeSO3]-H2O mixture with solid acid catalyst Nafion (R) NR50 was used in the pretreatment process. A lower amount of hydrogen bonding between neighboring pretreated MCC chains resulted from a less ordered cellulose structure, leading to lower crystallinity, decreased molecular weight and reduced thermal stability. The pyrolysis result showed that the yields of char were lower, the average reaction rate increased, and the DTG peak temperature decreased relative to the untreated MCC. The amount and concentration of the hydrogen gas obtained from the pyrolysis of sample 90(20) (4.00 mmol/g-sample) was higher than that obtained from the pyrolysis of the MCC (3.26 mmol/g-sample). This study explores MCC (pretreated by ionic liquid-H2O mixtures) with a recyclable solid acid catalyst under varying pretreatment conditions, as a potential raw feed material, to be applied in the pyrolysis
  NORTH CAROLINA STATE UNIV DEPT WOOD & PAPER SCI, English, Scientific journal
  ISSN：1930-2126, Web of Science ID：WOS:000367732700016
• Femtosecond-induced micostructures in Magnesium- doped Lithium Niobate crystals with high repetition rate　　　　　　　　　　　　　　　
  Hongli Kan; Shuanggen Zhang; Kaili Zhai; Xiurong Ma; Yiming Luo; Minglie Hu; Qingyue Wang
  OPTICS COMMUNICATIONS, Volume：361, First page：175, Last page：180, Feb. 2016
  In this paper, heat accumulation effect of MgO: LN crystal irradiated by femtosecond pulses was analyzed by a developed thermal conduction model in terms of the spatial and temporal distribution of the absorbed laser energy. Using the focused femtosecond pulses about 61 fs at 1040 nm with a repetition rate of 52 MHz, ablation morphologies under different exposure time and average power were obtained experimentally. The measured laser-induced damage threshold of X-, Y- and Z-cut MgO: LN crystals are 0.82 mJ/cm(2), 0.74 mJ/cm(2) and 0.76 mJ/cm(2), respectively, and based on the measurement achieved in the Lab the differences in the ablation morphologies were analyzed in detail. (C) 2015 Elsevier B.V. All rights reserved.
  ELSEVIER, English, Scientific journal
  DOI：https://doi.org/10.1016/j.optcom.2015.10.060
  DOI ID：10.1016/j.optcom.2015.10.060, ISSN：0030-4018, eISSN：1873-0310, Web of Science ID：WOS:000369229300030
• Arbuscular Mycorrhizal Association for Growth and Nutrients Assimilation of Pharagmites japonica and Polygonum cuspidatum Plants Growing on River Bank Soil　　　　　　　　　　　　　　　
  Animesh Sarkar; Takashi Asaeda; Qingyue Wang; Md. H. Rashid
  COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS, Volume：47, Number：1, First page：87, Last page：100, Jan. 2016
  Effects of arbuscular mycorrhizal fungi (AMF) on the growth, nutrient absorption, and inoculation effectiveness of AMF on pioneer plants Pharagmites japonica (C4) and Polygonum cuspidatum (C3) were evaluated by performing a pot experiment in a greenhouse at Saitama University, Japan. AMF spores were collected from the commercial product, Serakinkon. The average colonization levels of P. japonica and P. cuspidatum were 24-33% and 0.2-0.5% respectively and no colonization was found in sterilized soil treatment. AMF colonization increased the plant dry mass, phosphorus (P), and nitrogen (N) concentrations of P. japonica's roots, stems, and leaves when AMF applied with natural and sterilized soil compared with only sterilized and natural soil. This was a significant effect for N-loss minimization from soil. Maximum value showed when P. japonica was grown with natural soil in combination with AMF whereas P. cuspidatum showed very less or a negative response to AMF colonization in all cases.
  TAYLOR & FRANCIS INC, English, Scientific journal
  DOI：https://doi.org/10.1080/00103624.2015.1108432
  DOI ID：10.1080/00103624.2015.1108432, ISSN：0010-3624, eISSN：1532-2416, Web of Science ID：WOS:000367817100009
• P03 Evaluation of sonocatalytic reaction efficiency under various conditions　　　　　　　　　　　　　　　
  Sato Kota; Sekiguchi Kazuhiko; Sankoda Kenshi; Wang Qingyue
  Proceedings of the Annual Meeting of the Japan Society of Sonochemistry, Volume：25, First page：37, Last page：38, 2016
  Recently, it has been reported that photocatalytic reaction drived using ultrasonic (US) irradiationeven under dark condition, and this reaction has been known as sonocatalytic reaction. However, its reactionmechanism has not become clear in detail. In this study, we evaluated the removal ratio of organic compoundsin water phase based on sonocatalytic activity with 50 kHz US irradiation under dark condition. In order toclarify the influences of TiO₂ crystal structure, physical properties of target compounds, and H₂O₂ addition onthe removal ratio, three crystal types of TiO₂ and two different aldehydes, such as benzaldehyde (C₆H₅CHO)and formaldehyde (HCHO), were used for the degradation experiments. In case of TiO₂ (P25) suspension withUS irradiation under dark condition (US/P25), removal ratios of both aldehydes increased 10 % approximately.On the other hand, the effects of crystal structure and particle size of TiO₂ were evaluated by comparing US/P25with US/ST21 and US/ST21 with US/ST01, respectively. When smaller size TiO₂ particles including rutile typestructure (P25) were used, the removal ratio of C₆H₅CHO improved slightly whereas the removal ratio of HCHOdid not change in contrast. It was estimated that sonocatalytic reaction can be occurred in hydrophobic fieldnear the cavitation bubble. Furthermore, it has been reported that OH radicals formation was influenced byH2O2 addition, and depended on TiO₂ structure. Therefore, we also investigated the effect of H₂O₂ addition onremoval ratio by US/P25 and US/ST21. As a result, by H2O2 addition, removal ratio of HCHO was enhancedby US/P25 and reduced by US/ST21. However, removal ratio of C₆H₅CHO was reduced by both US/P25 andUS/ST21. The different behavior in H₂O₂ addition means that TiO₂ characteristics contribute to sonocatalystreaction.
  Japan Society of Sonochemistry, Japanese
  DOI：https://doi.org/10.20577/pamjss.25.0_37
  DOI ID：10.20577/pamjss.25.0_37, CiNii Articles ID：130005830648
• Assessment of the irrigation feasibility of low-cost filtered municipal wastewater for red amaranth (Ainaranthus tricolor L cv. Surma)　　　　　　　　　　　　　　　
  Gokul Chandra Biswas; Animesh Sarkar; Md H. Rashid; Monirul Hassan Shohan; Mirajul Islam; Qingyue Wang
  INTERNATIONAL SOIL AND WATER CONSERVATION RESEARCH, Volume：3, Number：3, First page：239, Last page：252, Sep. 2015
  Because of the scarcity of clean water, treated wastewater potentially provides an alternative source for irrigation. In the present experiment, the feasibility of using low-cost filtered municipal wastewater in the irrigation of red amaranth (Amoranthus tricolor L cv. Surma) cultivation was assessed. The collected municipal wastewater from fish markets, hospitals, clinics, sewage, and kitchens of households in Sylhet City, Bangladesh were mixed and filtered with nylon mesh. Six filtration methods were applied using the following materials: sand (T-1); sand and wood charcoal consecutively (T-2); sand, wood charcoal and rice husks consecutively (T-3); sand, wood charcoal, rice husks and sawdust consecutively (T-4); sand, wood charcoal, rice husks, sawdust and brick chips consecutively (T-5); and sand, wood charcoal, rice husks, sawdust, brick chips and gravel consecutively (T-6). The water from ponds and rivers was considered as the control treatment (L). The chemical properties and heavy metals content of the water were determined before and after the low cost filtering, and the effects of the wastewater on seed germination, plant growth and the accumulation rate of heavy metals by plants were assessed. After filtration, the pH, EC and TDS ranged from 5.87 to 9.17, 292 to 691 mu S cm(-1) and 267 to 729 mg L-1, respectively. The EC and TDS were in an acceptable level for use in irrigation, satisfying the recommendations of the FAO. However, select pH values were unsuitable for irrigation. The metal concentrations decreased after applying each treatment. The reduction of Fe,.Mn, Pb, Cu, As and Zn were 73.23%, 92.69%, 45.51%, 69.57%, 7547% and 95.06%, respectively. When we considered the individual filtering material, the maximum amount of As and Pb was absorbed by sawdust; Cu and Zn by wood charcoal; Mn and Cu by sand and Fe by gravel. Among the six filtration treatments, Ts showed the highest seed germination (67.14%), similar to the control To (77.14%). The healthy plants/pot ratio (93.62%) was significantly higher for T-5, even higher than the control (85.19%). Additionally, the average plant height for T-5 (8.097 in.) was statistically identical to the control (8.633 in.). The average number of leaves for T-5 (10) was near to the control (12). Finally, the minimum amount of heavy metals accumulated in the plants of Ts, whereas the maximum accumulation rate varied among treatments. The accumulated levels of Fe, Mn, Cu, and Zn were within the safe limit; however, the concentrations of Pb and As exceeded their safe limits. The results showed that the low-cost filtration method potentially allows municipal wastewater to he used in irrigation for agricultural production. (C) 2015 International Research and Training Center on Erosion and Sedimentation and China Water and Power Press. Production and Hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license
  KEAI PUBLISHING LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.iswcr.2015.07.001
  DOI ID：10.1016/j.iswcr.2015.07.001, ISSN：2095-6339, eISSN：2589-059X, Web of Science ID：WOS:000417101900007
• Role of arbuscular mycorrhizal fungi on the performance of floodplain Phragmites japonica under nutrient stress condition　　　　　　　　　　　　　　　
  Animesh Sarkar; Takashi Asaeda; Qingyue Wang; Md H. Rashid
  CHEMISTRY AND ECOLOGY, Volume：31, Number：5, First page：402, Last page：415, Jul. 2015
  A pot experiment was conducted to evaluate the potential effects of arbuscular mycorrhizal fungi (AMF) on growth, nutrient uptake, and inoculation effectiveness on Phragmites japonica. Spores of AMF strains (Gigaspora margarita Becker & Hall) were collected from the commercial product 'Serakinkon'. Four treatments, namely, natural soil (NS), natural soil inoculated by AM fungi, sterilised soil (SS) inoculated by AM fungi, and SS without AM fungi inoculation were selected to determine the effects of applied and indigenous AMF on P. japonica. The average colonisation level of P. japonica was 24-33%, whereas no colonisation was found in the SS. AMF colonisation increased the chlorophyll content (r = 0.84, p < .01), plant dry mass (r = 0.89, p < .01), and N, P, K, Mg, and Fe concentration of the plant's roots, stems, and leaves when AMF was applied with natural and SS. In all cases, maximum values were found when the plants were applied with NS in combination with AMF, but Ca concentration decreased as the colonisation level increased. Mn concentration decreased in the roots, but increased in the leaves. Cu concentration was not significantly affected by treatments. N-loss minimisation from the soil was significant when the colonisation level was high.
  TAYLOR & FRANCIS LTD, English, Scientific journal
  DOI：https://doi.org/10.1080/02757540.2015.1039527
  DOI ID：10.1080/02757540.2015.1039527, ISSN：0275-7540, eISSN：1029-0370, Web of Science ID：WOS:000359746800002
• Pyrolysis study of bamboo Phyllostachys edulis pretreated with ionic liquids mixtures　　　　　　　　　　　　　　　
  Qiyu Chen; Qingyue Wang
  Huagong Xuebao/CIESC Journal, Volume：66, Number：5, First page：1874, Last page：1882, May 2015
  The pyrolysis study of the ionic liquid (IL)-H2O mixtures pretreated bamboo (Phyllostachys edulis) was investigated. 1-Butyl-3-methylimidazolium chloride ([Bmim]Cl)-H2O, 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim]BF4)-H2O and 1-butyl-3-methyl pyrrolidinium chloride ([Bmpy]Cl) -H2O with or without solid acid catalyst (Nafion®NR50) were used in the pretreatment process. The composition analysis result of untreated bamboo and pretreated bamboo were compared. XRD and SEM result were analyzed to explain the effect of ILs mixture on cellulose crystalline structures and surface structures. According to the result of TG-DTA and GC-TCD, the sample pretreated with [Bmim]Cl-H2O mixture was used in the pyrolysis process to produce more gaseous products and low char. About 0.12 g gaseous products and 0.19 g char were produced from 1.0 g sample pretreated with [Bmim]Cl-H2O mixture and added solid acid catalyst, different from the result of untreated sample, 0.04 g gaseous products and 0.24 g char. The potential and problems of IL-H2O mixture pretreatment used in thermal chemical conversion methods were discussed.
  Materials China, Chinese, Scientific journal
  DOI：https://doi.org/10.11949/j.issn.0438-1157.20141494
  DOI ID：10.11949/j.issn.0438-1157.20141494, ISSN：0438-1157, SCOPUS ID：85092434964
• Spectral Characteristics of Femtosecond Pulses Propagation in Periodically Poled Lithium Niobate via Cascaded Quadratic Non linearity　　　　　　　　　　　　　　　
  Shuanggen Zhang; Wenchao You; Xiurong Ma; Minglie Hu; Qingyue Wang
  IEEE JOURNAL OF QUANTUM ELECTRONICS, Volume：51, Number：5, May 2015
  Characteristics of spectral shift and spectrum broadening of femtosecond pulses propagation in periodically poled lithium niobate via cascaded quadratic nonlinearity are investigated. Amount of spectral broadening is obtained analytically from coupled equations including Kerr-like term. Multipeak spectra with the typical self-phase-modulation-like characteristics were obtained experimentally using 40-fs pulses with a spectral width of 60 nm at 1550-nm band. The spectral blue and red shifts as large as 50 nm were observed with a large phase mismatching Delta k = 95 mm(-1). The simulated spectra confirmed the experimental measurement.
  IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, English, Scientific journal
  DOI：https://doi.org/10.1109/JQE.2015.2415525
  DOI ID：10.1109/JQE.2015.2415525, ISSN：0018-9197, eISSN：1558-1713, Web of Science ID：WOS:000353505700002
• Comparison of cellular toxicity caused by ambient ultrafine particles and engineered metal oxide nanoparticles　　　　　　　　　　　　　　　
  Senlin Lu; Wenchao Zhang; Rui Zhang; Pinwei Liu; Qiangxiang Wang; Yu Shang; Minghong Wu; Ken Donaldson; Qingyue Wang
  PARTICLE AND FIBRE TOXICOLOGY, Volume：12, Mar. 2015
  Objective: The development of nanotechnology has spurred concerns about the health effects of exposure to nanoparticles (NPs) and ultrafine particles (UFPs). Toxicological data on NPs and UFPs may provide evidence to support the development of regulations to reduce the risk of particle exposure. We tried to provide fundamental data to determine differences in cytotoxicity induced by ambient UFPs and engineered metal oxide NPs (ZnO, NiO, and CeO2).Methods: UFPs were sampled by using of a nano micro-orifice uniform deposit impactor. Physicochemical characterization of the UFPs and nano metal oxide particles were studied by scanning electron microscopy and transmission electron microscopy. Cellular toxicity induced by the different particles was assessed by using of comprehensive approaches and compared after A549 cells were exposured to the particles.Results: All of the measured particles could damage A549 cells at concentrations ranging from 25 to 200 mu g/mL. The lowest survival ratio and the highest lactate dehydrogenase level were caused by nano-ZnO particles, but the highest levels of intracellular reactive oxygen species (ROS) and percentages of apoptosis were observed in cells treated with the soluble fraction of ambient fine particles (PM1.8) at 200 mu g/mL. Relatively high concentrations of anthropogenic metals, including Zn, Ni, Fe, and Cu, may be responsible for the higher toxicity of fine ambient particles compared with the ambient coarse particles and UFPs. The selected heavy metals (Zn, Ni, Fe, and Cu) were found to be located in the perinuclear and cytoplasmic areas of A549 cells. The distribution pattern of metals from ambient particles showed that distributions of the metals in A549 cells were not uniform and followed the pattern Cu > Zn > Fe > Ni, suggesting that Cu was absorbed by A549 cells more easily than the other metals.Conclusions: Metal nanoparticles oxides and UFPs at low concentration could damage to cells, but the manufactured metal oxide nanoparticles are not highly toxic to lung cells compared to environmental particles. The local concentration effect of heavy metals in A549 cells, as well as the induction of oxidative stress by the particles, may be responsible for the damage observed to the cells.
  BIOMED CENTRAL LTD, English, Scientific journal
  DOI：https://doi.org/10.1186/s12989-015-0082-8
  DOI ID：10.1186/s12989-015-0082-8, ISSN：1743-8977, Web of Science ID：WOS:000353546600001
• Simulation of resonant microfabrication of the PLA film by single mid-infrared femtosecond laser pulse　　　　　　　　　　　　　　　
  Dongqing Pang; Yunxuan Li; Shutong He; Qingyue Wang
  OPTICAL AND QUANTUM ELECTRONICS, Volume：47, Number：3, First page：603, Last page：611, Mar. 2015
  Recently the dynamics of the resonant ablation of polymers and toluene employing mid-infrared femtosecond laser (fs laser) has been calculated by using the fluid equations. The advantages and shortcomings of the mid-infrared fs laser resonant ablation have been discussed. The results indicated that the mid-infrared fs laser is a powerful tool for removing a polymer coating on the substrate made of another polymer due to good wavelength selectivity. In this paper we studied the resonant ablation processes of polymer coatings with ultrahigh molecular weight. The influence of the initial temperature was discussed and the selection rules of laser parameters were given. We also discussed how to make hollow patterns in a polymer film, and the results demonstrated the acceleration of the ablation process caused by suspending the film.
  SPRINGER, English, Scientific journal
  DOI：https://doi.org/10.1007/s11082-014-9936-9
  DOI ID：10.1007/s11082-014-9936-9, ISSN：0306-8919, eISSN：1572-817X, Web of Science ID：WOS:000350882000014
• Physico-chemical characterization of PM2.5 in the microenvironment of Shanghai subway　　　　　　　　　　　　　　　
  Senlin Lu; Dingyu Liu; Wenchao Zhang; Pinwei Liu; Yi Fei; Yan Gu; Minghong Wu; Shang Yu; Shinich Yonemochi; Xiaoju Wang; Qingyue Wang
  ATMOSPHERIC RESEARCH, Volume：153, First page：543, Last page：552, Feb. 2015
  The Shanghai subway metro system has brought great convenience to the city's travelling public, although passengers are exposed to airborne particles in this built micro-environment. However, investigations on the physicochemical characterization of PM2.5 air pollution in the Shanghai subway system are to date very limited. Three subway stations along the No. 7 line were selected as subway PM2.5 monitoring sites: Pan'guang, Shanghai University (SHU), and Jing'an, which are located in an outer suburban area, a suburban area and the urban area, respectively, airborne PM2.5 on the subway station platforms and in the ambient atmosphere above-ground was synchronously collected from 19th March to 4th, May, 2012. Cutting-edge techniques, including scanning electronic microscopy coupled with energy dispersive X-ray (SEM/EDX), inductively coupled plasma mass spectrometry (ICP-MS) and X-ray absorption near-edge structure (XANES) were employed to investigate microscopic characterization, chemical elements and speciation of the main heavy metals in subway PM2.5. Our results demonstrated that mass levels of PM2.5 in the subway stations were higher than that in ambient air. Mass levels of PM 25 in the subway stations and in ambient air ranged from 49.17 +/- 19.7 mu g/m(3) to 66.15 +/- 25.20 mu g/m(3), and 24.52 +/- 3.3 mu g/m(3) to 65.60 +/- 5.6 mu g/m(3), respectively. The microscopic characterization of PM2.5 in ambient air and in subway stations showed marked differences. The PM2.5 in the subway stations was mainly composed of iron-containing particles and mineral particles, while the PM2.5 in ambient air largely consisted of mineral particles and soot aggregates. Fe was the most abundant element in subway PM2.5, followed by: major elements (mass level > 100 ng/m(3)) including Na, Mg, Al, K, Ca, Zn, Mn, Ba; sub-major elements (10 ng/m(3) < mass level < 100 ng/m(3)) including Li, Cr, Ni,Cu, Ga, Sr, Pb; and minor elements (mass level < 10 ng/m(3)), Be, V, As, Se, Rb, Ag, Cd, Tl, Bi. The mass levels of Ca, Al and Zn in ambient PM2.5 were higher than those in subway PM2.5, however those of the remaining 26 measured elements in subway PM2.5 were higher than in ambient PM2.5. The speciation of Fe in PM2.5 was in the form of Fe2+, while for Cu, that in the finer fractions (<0.25,0.5 and 1.0 mu m) was in the form Cu2+, but in the PM2.5 fraction itself, was as Cu1+ (C) 2014 Elsevier B.V. All rights reserved.
  ELSEVIER SCIENCE INC, English, Scientific journal
  DOI：https://doi.org/10.1016/j.atmosres.2014.10.006
  DOI ID：10.1016/j.atmosres.2014.10.006, ISSN：0169-8095, eISSN：1873-2895, Web of Science ID：WOS:000347264600044
• Distribution characteristics of heavy metals in the street dusts in Xuanwei and their health risk assessment
  Zhang, W.-C.; L{\"u; S.-L.; Liu, D.-Y.; Liu, P.-W.; Shinich, Y.; Wang, X.-J.; Wang, Q.-Y.
  Huanjing Kexue/Environmental Science, Volume：36, Number：5, 2015
  Scientific journal
  DOI：https://doi.org/10.13227/j.hjkx.2015.05.041
  DOI ID：10.13227/j.hjkx.2015.05.041, ORCID：23466825, SCOPUS ID：84930149467
• Biocontrol potentiality of isolated trichoderma spp. against pestalozzia theae Saw. in Tea
  Sarkar, A.; Das, R.C.; Rashid, H.; Ali, M.; Islam, M.S.; Asaeda, T.; Wang, Q.
  Acta Phytopathologica et Entomologica Hungarica, Volume：50, Number：2, 2015
  Scientific journal
  DOI：https://doi.org/10.1556/038.50.2015.2.3
  DOI ID：10.1556/038.50.2015.2.3, ORCID：23466803, SCOPUS ID：84948975445
• Characterization of Bamboo after Ionic Liquid-H2O Pretreatment for the Pyrolysis Process　　　　　　　　　　　　　　　
  Qiyu Chen; Takumi Endo; Qingyue Wang
  BIORESOURCES, Volume：10, Number：2, First page：2797, Last page：2808, 2015
  Bamboo (Phyllostachys edulis) samples pretreated with ionic liquid (ILs)-H2O mixtures were studied concerning their application in the pyrolysis process. [Bmim]Cl-H2O, [Bmim]BF4-H2O, [Bmim]HSO4-H2O, and [Bmim]Ac-H2O mixture systems were used in the pretreatment process. The characteristics of pretreated bamboo were analyzed, as was cellulose extracted from ILs-H2O pretreated bamboo. The enrichment of cellulose (a-cellulose) in pretreated bamboo was achieved. The amount of char resulting from the pyrolysis of the [Bmim] Ac-H2O pretreated sample (20.1 wt%) was lower than the untreated bamboo sample (24.2 wt%) at 900 degrees C. A greater proportion of the pretreated bamboo samples was converted into gas products and/or liquids. The pretreated cellulose pyrolysis process could proceed more easily than processing untreated samples due to the disordered crystalline cellulose structure and the decrease in molecular weight.
  NORTH CAROLINA STATE UNIV DEPT WOOD & PAPER SCI, English, Scientific journal
  DOI：https://doi.org/10.15376/biores.10.2.2797-2808
  DOI ID：10.15376/biores.10.2.2797-2808, ISSN：1930-2126, Web of Science ID：WOS:000354642000068
• Arbuscular mycorrhizal influences on growth, nutrient uptake, and use efficiency of Miscanthus sacchariflorus growing on nutrient-deficient river bank soil　　　　　　　　　　　　　　　
  Animesh Sarkar; Takashi Asaeda; Qingyue Wang; Md. H. Rashid
  FLORA, Volume：212, First page：46, Last page：54, 2015
  The potential effects of arbuscular mycorrhizal fungi (AMF) on growth, nutrient assimilation, and inoculation effectiveness of AMF on the pioneer plant Miscanthus sacchariflorus which is dominant in river banks were evaluated. A pot experiment was performed in a greenhouse at Saitama University, Japan. Spores of AMF strains were collected from the commercial product 'Serakinkon'. The average colonization level of M. sacchariflorus was 23-28%, whereas no colonization was found in sterilized soil. AMF colonization increased the chlorophyll content, plant dry mass, N, P, K, Mg, Fe, Cu, and Zn concentration of the M sacchariflorus plant's roots, stems, and leaves when it was applied with natural and sterilized soil. In all cases, maximum values were measured when the M. sacchariflorus plant was applied with natural soil in combination with AMF, but Ca concentration decreased as colonization level increased. Mn concentration decreased in roots and stems but increased in leaves in natural soil, and AMF with natural soil treatment. N loss minimization from the soil was significant when colonization level was high. Therefore, AMF have some potential effects for growth of the C4 grass Miscanthus sacchariflorus and nitrogen retention in aquatic terrestrial inter-faces (river banks). (C) 2015 Published by Elsevier GmbH.
  ELSEVIER GMBH, English, Scientific journal
  DOI：https://doi.org/10.1016/j.flora.2015.01.005
  DOI ID：10.1016/j.flora.2015.01.005, ISSN：0367-2530, eISSN：1618-0585, Web of Science ID：WOS:000353601700007
• P04 Ultrasonic degradation of perfluorochemicals combined with short-wavelength UV irradiation(Poster Session)　　　　　　　　　　　　　　　
  Kudo Takahisa; Sekiguchi Kazuhiko; Sankoda Kenshi; Wang Qingyue
  Proceedings of the Annual Meeting of the Japan Society of Sonochemistry, Volume：24, First page：27, Last page：28, 2015
  Perfluorochemicals (PFCs) is one of the fluorinated organic synthetic oil, and has been used as heat carrier and hydraulic oil for a vacuum pump used in the semiconductor clean room. This substance has extremely strong carbon-fluorine bonds in the internal structure, and these carbon-fluorine bonds give high resistance to heat and react with other chemicals. However, PFCs is harmful to a human body, and has high global warming potential. In this study, we investigated the effects of 200 kHz ultrasonication and short-wavelength UV irradiation on the degradation of hydrophobic PFCs (perfluorooctane: PFO) and its decomposition intermediate products. As an intermediate product of PFO, we chose perfluorooctanoic acid (PFOA) pentafluoropropionic acid (PFPrA). 93.7% of PFO was decomposed after 60 min by 200 kHz ultrasonic irradiation, and the concentration of PFO after 120 min was below the limit of quantitation. Defluorination of PFO after 120 min was improved 2.1% by the combination of UV_<254+185> irradiation. From these results, it was confirmed that 200 kHz ultrasonic irradiation was more effective for hydrophobic perfluorochemicals like PFO, and UV254+185 irradiation was more effective for hydrophilic perfluorochemicals which is considered one of the decomposition intermediates of PFO.
  The Japan Society of Sonochemistry, Japanese
  DOI：https://doi.org/10.20577/pamjss.24.0_27
  DOI ID：10.20577/pamjss.24.0_27, CiNii Articles ID：110010013719, CiNii Books ID：AA1259907X
• P14 Study on appearance of photocatalytic activity with ultrasonic irradiation under dark conditions(Poster Session)　　　　　　　　　　　　　　　
  Sato Kota; Sekiguchi Kazuhiko; Sankoda Kenshi; Wang Qingyue
  Proceedings of the Annual Meeting of the Japan Society of Sonochemistry, Volume：24, First page：47, Last page：48, 2015
  Recently, it has been reported that photocatalytic reaction drives using ultrasonic (US) irradiation even under dark condition. However, its mechanism does not become clear in detail. In this study, we evaluate the removal ratio of organic compounds in water phase based on photocatalytic activity with 50 kHz US irradiation under dark condition. In order to clarify the influences of TiO_2 crystal structure and the physical properties of target compounds, three crystal types of TiO_2 and two different aldehydes such benzaldehyde (C_6H_5CHO) and formaldehyde (HCHO) were used for degradation experiments. TiO_2 (P25) suspension with US irradiation under dark condition (US/P25) enhanced removal ratios of both aldehydes, from 8.2% (US only) to 17% (US/P25) in HCHO, and from 43% (US only) to 57% (US/P25) in C_6H_5CHO. On the other hand, the effect of crystal structure of TiO_2 was evaluated by comparing US/P25 with US/ST21. In the case of using TiO_2 including rutile type structure (P25), the removal ratio was slightly improved in C_6H_5CHO. Furthermore, US/ST21 was compared with US/ST01 from the viewpoint of the particle size. US/ST01 with smaller particle size enhanced removal ratio in C_6H_5CHO. In all experiments, no change of removal ratio was confirmed in HCHO indicating that TiO_2 crystal structure and the physical properties effect on removal ratio of hydrophobic compound. Thus, it was estimated that photocatalytic reaction by US/TiO_2 could be occurred in hydrophobic field near the cavitation bubble.
  The Japan Society of Sonochemistry, Japanese
  DOI：https://doi.org/10.20577/pamjss.24.0_47
  DOI ID：10.20577/pamjss.24.0_47, CiNii Articles ID：110010013729, CiNii Books ID：AA1259907X
• P06 Degradation of toluene gas with ultrasonic mist generated by AOP techniques(Poster Session)　　　　　　　　　　　　　　　
  Narahara Soma; Sekiguchi Kazuhiko; Sankoda Kenshi; Wang Qingyue
  Proceedings of the Annual Meeting of the Japan Society of Sonochemistry, Volume：24, First page：31, Last page：32, 2015
  Advanced oxidation processes (AOPs) are very effective techniques for degradation and mineralization of organic pollutants. On the other hand, ultrasonic atomization is a very useful technique to produce ultrasonic mist which consists of submicron-scale droplets. Using these techniques, volatile organic compound (VOC) gas was decomposed on the mist surface by OH radicals generated by AOPs, and water-soluble decomposition intermediates were rapidly captured into the mist. As a result, the removal rate of toluene under UV/H_2O_2/mist condition was faster than that under UV/H_2O_2 condition. This result indicated that toluene gas could easily react with OH radicals on the mist surface, using ultrasonic atomization, because gas-liquid interfaces increased by the mist generation. Furthermore, we tried degradation experiments of toluene gas under conditions with ozone addition. Ozone also reacts with H_2O_2 to generate OH radicals (perozone reaction) on the mist surface, and toluene gas was effectively removed there by perozone reaction. Since this reaction is effective for various VOC gases, it could be a useful air purification technique. Finally, we evaluated the chemical reactivity of VOC gas with ultrasonic mist from the viewpoint of AOPs reactions.
  The Japan Society of Sonochemistry, Japanese
  DOI：https://doi.org/10.20577/pamjss.24.0_31
  DOI ID：10.20577/pamjss.24.0_31, CiNii Articles ID：110010013721, CiNii Books ID：AA1259907X
• Physicochemical properties and ability to generate free radicals of ambient coarse, fine, and ultrafine particles in the atmosphere of Xuanwei, China, an area of high lung cancer incidence　　　　　　　　　　　　　　　
  Senlin Lu; Fei Yi; Xiaojie Hao; Shang Yu; Jingjing Ren; Minghong Wu; Feng Jialiang; Shinich Yonemochi; Qingyue Wang
  ATMOSPHERIC ENVIRONMENT, Volume：97, First page：519, Last page：528, Nov. 2014
  The link between the high incidence of lung cancer and harmful pollutants emitted by local coal combustion in Xuanwei, Yunnan province, China, has been a focus of study since the 1980s. However, the mechanisms responsible for the high lung cancer rate remain unclear, necessitating further study. Since a close relationship between ambient air particle pollution and respiratory diseases exists, we sampled size-resolved ambient particles from the atmosphere of Xuanwei. In our indoor experiment, cutting-edge methods, including scanning electron microscopy coupled with energy dispersive X-ray detection (SEMI/EDX), particle-induced X-ray emission (PIXE), electronic paramagnetic resonance (EPR) and the cell-free DCFH-DA assay, were employed to investigate the physicochemical properties, the potential to generate free radicals and the oxidative potential of ambient coarse (diameter, 1.8-10 mu m), fine (diameter, 0.1-1.8 mu m), and ultrafine (diameter, <0.1 gm) particles. We found the total mass concentrations of the size resolved particles collected in spring were higher than that in early winter. Mass percentage of fine particles accounted for 68% and 61% of the total particulate mass in spring and in early winter samples, respectively, indicating that fine particles were the major component of the Xuanwei ambient particulate matters. On the other hand, the results of SEM/EDX analysis showed that the coarse particles were dominated by minerals, the fine particles by soot aggregates and fly ashes, and the ultrafine particles by soot particles and unidentified particles. Our PIXE results revealed that crustal elements (Ca, Ti Si, Fe) were mainly distributed in coarse particles, while trace metals (Cr, Mn, Ni, Cu, Zn, Pb) dominated in the fine particle fraction, and S, a typical element emitted by coal combustion, mainly resided in fine particles collected from the winter atmosphere. EPR results indicated that the magnitude of free radical intensity caused by size-resolved particles followed these patterns: fine particles > coarse particles > ultrafine particles for spring samples and ultrafine particles > fine particles > coarse particles for winter samples. Cell-free DCFH assay results conclusively showed that all of the measured particle suspensions displayed a higher oxidative potential than the negative control. The correlation coefficient (R-2) between free radical intensity and fluorescent intensity generated by the size-resolved particles was 0.535 and 0.507 for the spring and winter seasons, respectively, implying that ambient air particles in the Xuanwei atmosphere have the ability to generate free radicals, and fine and ultrafine particles could be hazardous to local residents. (C) 2013 Elsevier Ltd. All rights reserved.
  PERGAMON-ELSEVIER SCIENCE LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.atmosenv.2013.11.047
  DOI ID：10.1016/j.atmosenv.2013.11.047, ISSN：1352-2310, eISSN：1873-2844, Web of Science ID：WOS:000343336700055
• Characterization of protein expression of Platanus pollen following exposure to gaseous pollutants and vehicle exhaust particles　　　　　　　　　　　　　　　
  Senlin Lu; Jingjin Ren; Xiaojie Hao; Dingyu Liu; Rongci Zhang; Minghong Wu; Fei Yi; Jun Lin; Yonemochi Shinich; Qingyue Wang
  AEROBIOLOGIA, Volume：30, Number：3, First page：281, Last page：291, Sep. 2014
  Being major ornamental street trees, species of Platanus are widely planted in the Shanghai urban area. A great deal of allergenic Platanus pollen is released from the trees and suspended in the atmosphere during its flowering season, ultimately causing allergic respiratory diseases. Few papers have focused on the distribution of this type of pollen and its expression of allergenic proteins. In order to investigate any differences in protein expression in Platanus pollen following exposure to gaseous and particulate pollutants, a special apparatus was designed. Exposure condition (such as temperature, humidity, and exposure time) of Platanus pollen and gaseous pollutants can be simulated using of this apparatus. Fresh Platanus orientalis pollen, pollutant gases (NO2, SO2, NH3), and typical urban ambient particles (vehicle exhaust particles, VEPs) were mixed in this device to examine possible changes that might occur in ambient airborne urban pollen following exposure to such pollutants. Our results showed that the fresh P. orientalis pollen became swollen, and new kinds of particles could be found on the surface of the pollen grains after exposure to the pollutants. The results of SDS-PAGE showed that five protein bands with molecular weights of 17-19, 34, 61, 82, and 144 kDa, respectively, were detected and gray scale of these brands increased after the pollen exposure to gaseous pollutants. The two-dimensional gel electrophoresis analysis demonstrated that a Platanus pollen allergenic protein (Pla a1, with a molecular weight of 18 kDa) increased in abundance following exposure to pollutant gases and VEPs, implying that air pollutants may exacerbate the allergenicity of pollen.
  SPRINGER, English, Scientific journal
  DOI：https://doi.org/10.1007/s10453-014-9327-5
  DOI ID：10.1007/s10453-014-9327-5, ISSN：0393-5965, eISSN：1573-3025, Web of Science ID：WOS:000340393500006
• Study on the size-segregated distribution of 37 species of polycyclic aromatic hydrocarbons in urban atmospheric fine particles of Japan　　　　　　　　　　　　　　　
  Q. Wang; K. Kobayashi; M. Zhou; S. Lu; S. Dong; D. Nakajima; K. Sekiguchi; M. Terasaki
  WIT Transactions on Ecology and the Environment, Volume：183, First page：131, Last page：143, Jul. 2014, [Reviewed]
  The size-segregated distribution and seasonal concentrations of polycyclic aromatic hydrocarbons (PAHs) in urban suspended particulate matter (SPM) at the Japan national route 463 in the urban of Saitama city, Japan were investigated using an Andersen high-volume air sampler. Air sampling was carried out from June 2013 to January 2014. 37 species of toxic PAHs such as benzo[j]aceanthrylene, dibenzo[a,h]anthracene, benzo[c]fluorene and dibenzo[a,l]pyrene were measured. It was found that the average concentration of 37 species of particulate PAHs including methyl-PAHs, benzothiophenes and oxy-PAHs from atmospheric oxidation of PAHs collected in the urban of Saitama city was 3.42 to 6.51 ng/m3 during 2013 sampling campaign periods. 1,8-naphthalic anhydride (1,8-NA) showed the highest concentration among 37 species of PAHs. The concentrations of high molecular PAHs, which were found in all seasons, followed different size distribution, especially with the highest peak in fine particle sizes around 1.1 μm. The concentrations of low-molecular PAHs were not much different with particle sizes. The toxicity analysis indicated that the carcinogenic potency of particulate PAHs primarily existed in the particle size below 1.1 μm. 37 species of PAHs in urban atmospheric fine particles were not only derived from vehicle emission with long range transportation, but also produced by local other anthropogenic sources.
  WITPress, English, Scientific journal
  DOI：https://doi.org/10.2495/AIR140111
  DOI ID：10.2495/AIR140111, ISSN：1743-3541, SCOPUS ID：84924079392
• Dynamics of mid-infrared femtosecond laser resonant ablation　　　　　　　　　　　　　　　
  Dongqing Pang; Yunxuan Li; Qingyue Wang
  APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, Volume：115, Number：4, First page：1181, Last page：1185, Jun. 2014
  Resonant ablation is beneficial to avoiding uncontrollable subsurface damages in the laser ablation of polymers. In this paper the dynamics of mid-infrared laser resonant ablation of polylactic acid and toluene was calculated by using fluid dynamic equations. The merits and drawbacks of mid-infrared femtosecond laser resonant ablation of high molecular weight polymers have been discussed.
  SPRINGER, English, Scientific journal
  DOI：https://doi.org/10.1007/s00339-013-8144-y
  DOI ID：10.1007/s00339-013-8144-y, ISSN：0947-8396, eISSN：1432-0630, Web of Science ID：WOS:000336362900014
• Behavior of Cellulose Liquefaction After Pretreatment Using Ionic Liquids with Water Mixtures　　　　　　　　　　　　　　　
  Qingyue Wang; Qiyu Chen; Naoki Mitsumura; Sarkar Animesh
  JOURNAL OF APPLIED POLYMER SCIENCE, Volume：131, Number：11, Jun. 2014
  Ionic liquid (IL)-water mixtures were applied in cellulose pretreatment experiment and the pretreated cellulose was used in subsequent phenol liquefaction process as a new application method. Cellulose recovery rate and the average molecular weight (M-w) of pretreated cellulose were investigated to understand the influence of these mixtures on cellulose structure. X-ray diffraction, Fourier transform infrared, gel permeation chromatograph, and scanning electron microscope were used to clarify the changes of pretreated cellulose. The liquefied residues from untreated cellulose and pretreated cellulose were considered as significant index to determine the effect of IL-water mixtures on cellulose. Moreover, liquefied residues were initially characterized by the variation of the average M-w. It was suggested that the lower M-w of cellulose obtained in IL-water mixtures, and the crystalline structure was disrupted. So, some cracks were found on the cellulose surface obviously. The liquefied residues result suggested that the pretreated cellulose obtained the lower residues at the same time or the same amount of residues by using the less time. The behavior of cellulose liquefaction efficiency using IL-water mixture pretreatment was discussed. The lower M-w of cellulose was the major factor, which accelerates the cellulose phenol liquefaction process efficiency. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40255.
  WILEY, English, Scientific journal
  DOI：https://doi.org/10.1002/app.40255
  DOI ID：10.1002/app.40255, ISSN：0021-8995, eISSN：1097-4628, Web of Science ID：WOS:000332387300041
• Femtosecond cascaded third-harmonic generation with simultaneous walk-off effect by multigrating periodically poled MgO-doped lithium niobate　　　　　　　　　　　　　　　
  Wenchao You; Shuanggen Zhang; Xiurong Ma; Qingyue Wang
  OPTICAL ENGINEERING, Volume：53, Number：5, May 2014
  The explicit formula solutions of cascaded third-harmonic generation (THG) process were derived based on coupled-wave equations. Conversion efficiency (CE) with the simultaneous temporal walk-off effect is theoretically investigated by use of split-step Fourier transform method, and the obtained results show that the CE of cascaded THG can be adjusted by phase mismatch, i.e., Delta k(SHG) and Delta k(THG). The walk-off effect can be eliminated to some extent by optimizing pump intensity. Using the multiple-grating periodically poled MgO-doped lithium niobate (MgO: PPLN), pumped by 50 fs optical parametric amplifier pulses, the CE of the cascaded THG was achieved (10.8%), and a detailed analysis was presented. (C) 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
  SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS, English, Scientific journal
  DOI：https://doi.org/10.1117/1.OE.53.5.056119
  DOI ID：10.1117/1.OE.53.5.056119, ISSN：0091-3286, eISSN：1560-2303, Web of Science ID：WOS:000340680800069
• Oil aggregated behavior for coal recovery and combustion characteristics of their aggregates from different grade coals
  Wang, Q.; Niida, H.; Liu, C.; Kurokawa, H.; Sarkar, A.; Sekiguchi, K.; Sugiyama, K.
  International Journal of Sustainable Development and Planning, Volume：9, Number：4, 2014
  Scientific journal
  DOI：https://doi.org/10.2495/SDP-V9-N5-692-704
  DOI ID：10.2495/SDP-V9-N5-692-704, ORCID：23466847, SCOPUS ID：84939476228
• Study on biomass tar reduction by ash and fluidizing medium in a heterogeneous reaction
  Wang, Q.; Endo, T.; Aparu, P.; Kurogawa, H.
  International Journal of Sustainable Development and Planning, Volume：9, Number：4, 2014
  Scientific journal
  DOI：https://doi.org/10.2495/SDP-V9-N5-669-679
  DOI ID：10.2495/SDP-V9-N5-669-679, ORCID：23466843, SCOPUS ID：84939478706
• Investigation of condensation reaction during phenol liquefaction of waste woody materials
  Wang, Q.; Mitsumura, N.; Chen, Q.; Sarkar, A.; Kurokawa, H.; Sekiguchi, K.; Sugiyama, K.
  International Journal of Sustainable Development and Planning, Volume：9, Number：4, 2014
  Scientific journal
  DOI：https://doi.org/10.2495/SDP-V9-N5-658-668
  DOI ID：10.2495/SDP-V9-N5-658-668, ORCID：23466841, SCOPUS ID：84939484204
• Process analysis of the waste bamboo by using polyethylene glycol solvent liquefaction
  Wang, Q.; Chen, Q.; Qiao, Q.; Sugiyama, K.
  International Journal of Sustainable Development and Planning, Volume：9, Number：4, 2014
  Scientific journal
  DOI：https://doi.org/10.2495/SDP-V9-N5-647-657
  DOI ID：10.2495/SDP-V9-N5-647-657, ORCID：23466839, SCOPUS ID：84939540625
• Reduction of fine particles exhausted from small-size combustor using agricultural waste residue by controlling burning temperatures
  Wang, Q.; Itoh, S.; Lu, S.
  International Journal of Sustainable Development and Planning, Volume：9, Number：4, 2014
  Scientific journal
  DOI：https://doi.org/10.2495/SDP-V9-N5-717-726
  DOI ID：10.2495/SDP-V9-N5-717-726, ORCID：23466838, SCOPUS ID：84926507671
• Reactivity for pyrolysis and co2 gasification of alkali metal loaded waste wood char
  Wang, Q.; Apaer, P.; Kurokawa, H.; Sugiyama, K.
  International Journal of Sustainable Development and Planning, Volume：9, Number：5, 2014
  Scientific journal
  DOI：https://doi.org/10.2495/SDP-V9-N5-680-691
  DOI ID：10.2495/SDP-V9-N5-680-691, ORCID：23466830, SCOPUS ID：84939539960
• Release behaviour of cryptomeria japonica pollen allergenic cry j 1 and cry j 2 in rainwater containing air pollutants
  Wang, Q.; Nakamura, S.; Gong, S.; Suzuki, M.; Nakajima, D.; Takai, Y.; Lu, S.; Sekiguchi, K.; Miwa, M.
  International Journal of Sustainable Development and Planning, Volume：9, Number：1, 2014
  Scientific journal
  DOI：https://doi.org/10.2495/SDP-V9-N1-42-53
  DOI ID：10.2495/SDP-V9-N1-42-53, ORCID：23466795, SCOPUS ID：84901200693
• Characterization of polycyclic aromatic hydrocarbons in suspended fine particulate matter emitted from rice husk burning under different combustion temperature conditions
  Wang, Q.; Kobayashi, K.; Lu, S.; Itoh, S.; Nakajima, D.
  WIT Transactions on Ecology and the Environment, Volume：186, 2014
  Scientific journal
  DOI：https://doi.org/10.2495/ESUS140221
  DOI ID：10.2495/ESUS140221, ORCID：23466848, SCOPUS ID：84926490038
• Biomass and pyrolyzed waste char produced from solid industrial and agricultural organic wastes
  Wang, Q.; Aparu, P.; Kurogawa, H.; Sugiyama, K.
  International Journal of Sustainable Development and Planning, Volume：9, Number：5, 2014
  Scientific journal
  DOI：https://doi.org/10.2495/SDP-V9-N5-705-716
  DOI ID：10.2495/SDP-V9-N5-705-716, ORCID：23466817, SCOPUS ID：84939544438
• P6 Degradation of persistent organic fluorine compound using ultrasonic irradiation and short-wavelength UV light(Poster Session)　　　　　　　　　　　　　　　
  Kudo Takahisa; Sekiguchi Kazuhiko; Wang Qingyue
  Proceedings of the Annual Meeting of the Japan Society of Sonochemistry, Volume：23, First page：41, Last page：42, 2014
  Perfluoropolyether (PFPE) is the fluorinated organic synthetic oil which has been used as heat carrier and hydraulic oil for a vacuum pump used in the semiconductor clean room. This substance has extremely strong carbon-fluorine bonds in the internal structure, and these carbon-fluorine bonds give high resistance to heat and a chemical reaction. However, PFPE is harmful to a human body, and has high global warming potential. In this study, we investigated the effects of 50 and 200 kHz ultrasonication and short-wavelength UV irradiation on the degradation of PFPE and its decomposition intermediate products. As an intermediate product of PFPE, we chose pentafluoropropionic acid (PFPrA). 84.9% of PFPE was decomposed after 120 min by 200 kHz ultrasonic irradiation, and 48.6% of PFPrA was decomposed after 120 min by UV_<254+185> irradiation. From these results, it was confirmed that 200 kHz ultrasonic irradiation was more effective for hydrophobic perfluorochemicals like PFPE, and UV_<254+185> irradiation was more effective for hydrophilic perfluorochemicals like PFPrA which is one of the decomposition intermediates of PFPE.
  The Japan Society of Sonochemistry, Japanese
  DOI：https://doi.org/10.20577/pamjss.23.0_41
  DOI ID：10.20577/pamjss.23.0_41, CiNii Articles ID：110010013673, CiNii Books ID：AA1259907X
• P22 Influences of various factors on cellulose saccharification using un ultrasonic/solid acid catalyst method(Poster Session)　　　　　　　　　　　　　　　
  Nonaka Takumi; Sekiguchi Kazuhiko; Wang Qingyue
  Proceedings of the Annual Meeting of the Japan Society of Sonochemistry, Volume：23, First page：73, Last page：74, 2014
  Use of the biomass is one of the solutions of an energy problem. The sugar provided by saccharification of the biomass can be converted into biofuel and materials. There are some problems in saccharification methods, for example, sulfuric acid saccharification needs collection and disposal of abolished sulfuric acid, hydrothermal saccharification needs high temperature and high pressure conditions, and enzymic saccharification needs long reaction time and high costs. Ultrasonic irradiation causes a physical effect as stirring and a chemical effect as radical reaction by selecting the frequency appropriately. The aim of this research is to investigate the influence of ultrasonic irradiation on solid acid saccharification of biomass under the mild condition. From our experimental results, it was suggested that solid acid method with ultrasonic irradiation accelerated the saccharification reaction at the temperature of 60 ℃. And also, the case of 50 kHz irradiation showed higher total sugar concentration than that of the 200 kHz irradiation.
  The Japan Society of Sonochemistry, Japanese
  DOI：https://doi.org/10.20577/pamjss.23.0_73
  DOI ID：10.20577/pamjss.23.0_73, CiNii Articles ID：110010013689, CiNii Books ID：AA1259907X
• P7 Effects of ultrasonic irradiation and physical pretreatment on hydrolysis of cellulosic biomass with dilute sulfuric acid(Poster Session)　　　　　　　　　　　　　　　
  Sekiguchi Kazuhiko; Baba Koya; Wang Qingyue
  Proceedings of the Annual Meeting of the Japan Society of Sonochemistry, Volume：23, First page：43, Last page：44, 2014
  Lignocellulosic biomass is one of sustainable resources which can be used for biofuel (ethanol) and materials through saccharification. However, there are several problems in the existing saccharification methods. For example, sulfuric acid saccharification needs a complicated process to treat waste sulfuric acid, and enzymic saccharification needs long reaction time and high cost. Therefore, an effective and economical saccharification method is necessary. The aim of this research is to investigate the influence of physical pretreatment and ultrasonic irradiation on saccharification of cellulose under low sulfuric acid concentration conditions. Physical pretreatment has the refinement and disruptive effects on crystalline structure of a cellulose sample. Ultrasonic wave has a physical effect as stirring and a chemical effect as radical reaction by selecting appropriate frequency. From our experimental results, it was confirmed that ball milling pretreatment improved acid hydrolysis of cellulose by decreasing cellulose crystallinity. And it was suggested that 200 kHz of ultrasonic irradiation affected on saccharification of cellulose effectively by the chemical effect in the case of 30 wt% sulfuric acid concentration at 60℃ reaction temperature after 6 h ball milling.
  The Japan Society of Sonochemistry, Japanese
  DOI：https://doi.org/10.20577/pamjss.23.0_43
  DOI ID：10.20577/pamjss.23.0_43, CiNii Articles ID：110010013674, CiNii Books ID：AA1259907X
• Removal of Ethylene and Secondary Organic Aerosols Using UV-C-254 (+) (185) (nm) with TiO2 Catalyst　　　　　　　　　　　　　　　
  Ken-Lin Chang; Kazuhiko Sekiguchi; Qingyue Wang; Feng Zhao
  AEROSOL AND AIR QUALITY RESEARCH, Volume：13, Number：2, First page：618, Last page：626, Apr. 2013
  In this investigation we evaluated the feasibility and effectiveness of ozone-producing UV (254 + 185 nm) irradiation and a TiO2 photocatalyst for degradation of ethylene, which is strongly hydrophobic and does not decompose easily in a humid environment. Tests were performed in a photoreactor (V = 0.55 L) under UV irradiation at various wavelengths (365, 254 and 254 + 185 nm), relative humidities (RH < 1% and RH > 86%), atmospheres (pure N-2 and air), residence times (11-33 sec), initial ethylene concentrations in the range of 25-105 ppmv and TiO2 contact areas (86.4-259 cm(2)) with presumably ambient pressure and temperature.The experimental results demonstrated that the use of TiO2 under 254 + 185 nm UV irradiation significantly enhanced the photodegradation of ethylene compared to the case of UV irradiation alone, due to the synergistic effect of photochemical oxidation in the gas phase and photocatalytic oxidation on the TiO2 surface. Photodegradation induced with 254 + 185 nm UV irradiation was compared with photodegradation induced with UV irradiation at wavelengths of 365 and 254 nm. The highest conversion and mineralization levels were obtained with 254 + 185 nm UV irradiation among the three tested UV sources. Moreover, irradiating with 254 + 185 nm light generated secondary organic aerosols (SOA) via gas-to-particle conversion of organic compounds in the air stream. The results indicate that the concentration of generated SOAs decreased in the presence of the TiO2 catalyst, and thus that TiO2 may be used to effectively control the emissions of undesirable SOAs.In an application test, for photocatalytic oxidation with 254 + 185 nm UV irradiation, corresponding to a flow rate of 0.5 L/min, and an initial concentration of 34 ppmv, over 90% of the inlet ethylene could be degraded.
  TAIWAN ASSOC AEROSOL RES-TAAR, English, Scientific journal
  DOI：https://doi.org/10.4209/aaqr.2012.07.0195
  DOI ID：10.4209/aaqr.2012.07.0195, ISSN：1680-8584, eISSN：2071-1409, Web of Science ID：WOS:000315327400018
• Process analysis of waste bamboo materials using solvent liquefaction
  Wang, Q.; Qiao, Q.; Chen, Q.; Mitsumura, N.; Kurokawa, H.; Sekiguchi, K.; Sugiyama, K.
  WIT Transactions on Ecology and the Environment, Volume：176, 2013
  Scientific journal
  DOI：https://doi.org/10.2495/ESUS130231
  DOI ID：10.2495/ESUS130231, ORCID：23466835, SCOPUS ID：84887571207
• Suppression method of the condensation reaction during phenol liquefaction of woody material
  Wang, Q.; Mitsumura, N.; Chen, Q.; Apar, P.; Niida, H.; Ito, S.; Endo, T.; Animesh, S.; Kurokawa, H.; Sekiguchi, K.; Sugiyama, K.
  WIT Transactions on Ecology and the Environment, Volume：176, 2013
  Scientific journal
  DOI：https://doi.org/10.2495/ESUS130241
  DOI ID：10.2495/ESUS130241, ORCID：23466826, SCOPUS ID：84887604741
• Study on heterogeneous reaction between tar and ash from waste biomass pyrolysis and gasification
  Wang, Q.; Endo, T.; Apar, P.; Gui, L.; Chen, Q.; Mitsumura, N.; Qian, Q.; Niida, H.; Animesh, S.; Sekiguchi, K.
  WIT Transactions on Ecology and the Environment, Volume：176, 2013
  Scientific journal
  DOI：https://doi.org/10.2495/ESUS130251
  DOI ID：10.2495/ESUS130251, ORCID：23466814, SCOPUS ID：84887605199
• Clarification of the reaction at the solution interface of pyrite during oil agglomeration for developing desulfurization and coal cleaning efficiency
  Wang, Q.; Niida, H.; Apar, P.; Chen, Q.; Gui, L.; Qian, Q.; Mitsumura, N.; Endou, T.; Animesh, S.; Kurokawa, H.; Sekiguchi, K.; Sugiyama, K.
  WIT Transactions on Ecology and the Environment, Volume：176, 2013
  Scientific journal
  DOI：https://doi.org/10.2495/ESUS130261
  DOI ID：10.2495/ESUS130261, ORCID：23466798, SCOPUS ID：84887590773
• Behavior of suspended particulate matter emitted from combustion of agricultural residue biomass under different temperatures
  Wang, Q.; Itoh, S.; Itoh, K.; Apaer, P.; Chen, Q.; Niida, D.; Mitsumura, N.; Animesh, S.; Sekiguchi, K.; Endo, T.
  WIT Transactions on Ecology and the Environment, Volume：176, 2013
  Scientific journal
  DOI：https://doi.org/10.2495/ESUS130271
  DOI ID：10.2495/ESUS130271, ORCID：23466844, SCOPUS ID：84887583765
• Size-segregated allergenic particles released from airborne Cryptomeria japonica pollen grains during the Yellow Sand events within the pollen scattering seasons
  Qingyue Wang; Xiumin Gong; Miho Suzuki; Senlin Lu; Kazuhiko Sekiguchi; Daisuke Nakajima; Makoto Miwa
  Asian Journal of Atmospheric Environment, Volume：7, Number：4, First page：191, Last page：198, 2013
  Cryptomeria japonica pollen is the most common pollen, which are scattering during each spring season in Japan. Japanese cedar (Cryptomeria japonica) pollinosis is one of seasonal allergic rhinitis that mainly occurs in Japan. In addition, long range transportation of Yellow Sand from the East Asian continent was also found during the pollen scattering seasons in Japan. Therefore, the interaction or impact between pollen and Yellow Sand should be concerned. In this study, our objective was to investigate the airborne behaviour of Cryptomeria japonica pollen grains and its size-segregated allergenic (Cry j 1) particles as the airborne tracer of Cryptomeria japonica pollen during the Yellow Sand events. Airborne Cryptomeria japonica pollen grains and its size-segregated allergenic particles were collected at roadside of urban residential zones of Saitama city during the pollination periods from February to March in two year investigation of 2009 and 2010. The overlap of Yellow Sand events and dispersal peak of pollen grains was observed. According to the Meteorological data, we found that the peaks of airborne pollen grains appeared under higher wind speed and temperature than the previous day. It was thought that Yellow Sand events and airborne pollen counts were related to wind speed. From the investigation of the airborne behavior of the size-segregated allergen particles by determining Cry j 1 with Surface Plasmon Resonance (SPR), the higher concentrations of the allergenic Cry j 1 were detected in particle size equal to or less than 1.1 μ(PM1.1) than other particle sizes during Yellow Sand events, especially in the rainy day. We conclude that rainwater trapping Yellow Sand is one of the important factors that affect the release of allergenic pollen species of Cry j 1. Therefore, it is very important to clarify the relationships between Cryptomeria japonica pollen allergenic species and chemical contents of the Yellow Sand particles in further studies.
  Korean Society for Atmospheric Environment, English, Scientific journal
  DOI：https://doi.org/10.5572/ajae.2013.7.4.191
  DOI ID：10.5572/ajae.2013.7.4.191, ISSN：2287-1160, SCOPUS ID：84893421746
• Diurnal and nocturnal behaviour of airborne Cryptomeria japonica pollen grains and the allergenic species in urban atmosphere of saitama, Japan
  Qingyue Wang; Shinichi Nakamura; Senlin Lu; Daisuke Nakajima; Miho Suzuki; Kazuhiko Sekiguchi; Makoto Miwa
  Asian Journal of Atmospheric Environment, Volume：7, Number：2, First page：65, Last page：71, 2013
  Japanese cedar (Cryptomeria japonica) pollinosis is the most popular pollinosis in Japan. It has been reported that Cryptomeria japonica pollen allergenic species are suspended as fine particles in the urban atmosphere. These allergenic fine particles are responsible for inducing asthma by breaking into the lower respiratory tract. It has also been found that pollinosis symptoms on the sufferers appear mainly at night-time by the results from epidemiological studies. However, the exact reason for these phenomena is not yet clarified. In this study, the diurnal and nocturnal behaviours of Cryptomeria japonica pollen grains and their allergenic species in the urban area of Saitama city of Kanto Plain were investigated. Airborne pollen grains and allergenic Cry j 1 concentrations in total suspended particulate matter (TSP) were investigated at two sampling sites, a heavy traffic road (roadside site) and at the balcony of the 10th floor of the Building of Research and Project of Saitama University (general urban site). The latter sampling site where located about 300 m away from the roadside site was used as a general urban site unaffected by automobile traffic. The airborne pollen counts were measured with a real-time pollen monitor. Cry j 1 particles were collected with two high volume air samplers, and these concentrations were measured by surface plasmon resonance method with a Biacore J system. The diurnal variation of the airborne pollen counts was similar to the trends of temperature and wind speed during the day-time
  whereas its tendency with wind speed trend was not observed during the night-time. Airborne pollen counts were lower with northern wind than with southern wind because the pollen comes from the mountainous areas, and the mountains in the south are closer, about half the distance to the northern mountains. It is suggested that the peaks of airborne pollen counts during night-time in the sampling site occurred by transport of pollen grains released during day-time in the mountainous forest areas, located c.a. 100 km away from the sampling site. On the roadside site the allergenic Cry j 1 concentrations were higher than at the general urban site, nevertheless pollen grains counts were lower. These results suggested that worsening of pollinosis symptoms during nighttime in urban area was caused by transport of pollen grains during day-time in the mountainous forest areas. Moreover, pollen allergenic species become different morphology from pollen grain at roadside site, and the subsequent pollen grains re-suspension by automobile traffic.
  Korean Society for Atmospheric Environment, English, Scientific journal
  DOI：https://doi.org/10.5572/ajae.2013.7.2.065
  DOI ID：10.5572/ajae.2013.7.2.065, ISSN：2287-1160, SCOPUS ID：84883251208
• P14 Generation of ultrasonic mist under different frequency conditions(Poster Session)　　　　　　　　　　　　　　　
  Sekiguchi Kazuhiko; Kudo Takahisa; Wang Qungyue; Shimura Tetsuya
  Proceedings of the Annual Meeting of the Japan Society of Sonochemistry, Volume：22, First page：49, Last page：50, 2013
  Ultrasonic atomization is a very useful technique to produce fine liquid particles of a diameter range below 10μm. This technique does not need calorie but uses relatively high ultrasonic of irradiation frequency. In this study, we investigated the behavior of size distribution of ultrasonic mist generated under different frequency conditions. From the results of WPS measurements, it was confirmed that the peak diameter changed to smaller range with increasing in frequency, regardless the number concentration of mist increased at the smaller range. It was thought that this tendency depended on the wavelength of capillary wave because higher frequency could generate shorter capillary wave. Using this technique, the mist with different diameter can be generated according to the purpose by changing an ultrasonic transducer with different frequency.
  The Japan Society of Sonochemistry, Japanese
  DOI：https://doi.org/10.20577/pamjss.22.0_49
  DOI ID：10.20577/pamjss.22.0_49, CiNii Articles ID：110009732786, CiNii Books ID：AA1259907X
• P33 Influence of various factors on the acid saccharification of biomass under ultrasonic irradiation(Poster Session)　　　　　　　　　　　　　　　
  Sekiguchi Kazuhiko; Baba Koya; Wang Qingyue
  Proceedings of the Annual Meeting of the Japan Society of Sonochemistry, Volume：22, First page：87, Last page：88, 2013
  Lignocellulosic biomass is one of sustainable resources which can be used for biofuel and materials by saccharification. However, there are several problems in the existing saccharification methods. For example, sulfuric acid saccharification needs a complicated process to treat waste sulfuric acid and enzymic saccharification needs long reaction time and high cost. Therefore, an effective and economical saccharification method is necessary. The aim of this research is to investigate the influence of ultrasonic irradiation on saccharification of biomass under low sulfuric acid concentration conditions. Ultrasonic wave has a physical effect as stirring and a chemical effect as radical reaction by selecting the frequency appropriately. From our experimental results, it was suggested that 200kHz of ultrasonic irradiation affected on saccharification of hemicelluloses in biomass effectively by the chemical effect in the case of 5wt% sulfuric acid concentration at 60℃ reaction temperature.
  The Japan Society of Sonochemistry, Japanese
  DOI：https://doi.org/10.20577/pamjss.22.0_87
  DOI ID：10.20577/pamjss.22.0_87, CiNii Articles ID：110009732805, CiNii Books ID：AA1259907X
• P13 Evaluation of chemical reactivity of ultrasonic mist to VOC gas using various AOP techniques(Poster Session)　　　　　　　　　　　　　　　
  Sekiguchi Kazuhiko; Namiki Takaaki; Wang Qingyue; Namiki Norikazu
  Proceedings of the Annual Meeting of the Japan Society of Sonochemistry, Volume：22, First page：47, Last page：48, 2013
  Advanced oxidation processes (AOPs) are very efficient methods for destruction and mineralization of recalcitrant organic compounds. On the other hand, ultrasonic atomization is a very useful technique to produce fine liquid particles of a diameter range below 10μm. In this study, gaseous VOC is removed on the mist surface or inside it by OH radicals generated from hydrogen peroxide (H_2O_2) and 254nm of UV irradiation. The degradation of gaseous pollutants in a mist formed by ultrasonic atomization was studied under various conditions. Furthermore, 200kHz of high frequency ultrasound irradiation was used for continuous supply of H_2O_2. From these experiments, sufficient removal rates of toluene were obtained not only under 200kHz/UV/mist condition but also under 200kHz/mist condition. This process may be applied as a new air purification technique.
  The Japan Society of Sonochemistry, Japanese
  DOI：https://doi.org/10.20577/pamjss.22.0_47
  DOI ID：10.20577/pamjss.22.0_47, CiNii Articles ID：110009732785, CiNii Books ID：AA1259907X
• Differences of chemical species and their ratios between fine and ultrafine particles in the roadside environment　　　　　　　　　　　　　　　
  Shinji Kudo; Kazuhiko Sekiguchi; Kyung Hwan Kim; Masatoshi Kinoshita; Detlev Moeller; Qingyue Wang; Hiroshi Yoshikado; Kazuhiko Sakamoto
  ATMOSPHERIC ENVIRONMENT, Volume：62, First page：172, Last page：179, Dec. 2012
  Chemical components of fine particles (FPs; aerodynamic diameter, Dp <2.5 mu m) and ultrafine particles (UFPs; Dp < 0.1 mu m) at Japanese and German roadsides were investigated during summer. The UFPs/FPs ratio for organic carbon (CC) concentrations on weekdays was 34.5% and 25.0% at Japanese and German roadsides, respectively, whereas 33% and 6.4% for elemental carbon (EC) concentrations, respectively. These results thus indicate a higher OC and a lower EC contribution from UFPs at the Japanese roadside than at the German roadside. In particle samples, OC2 and OC3 constituted a high proportion of UFPs, and pyrolyzed OC and EC1 were predominant among FPs of 0.1 mu m < Dp <2.5 mu m. Our results showed roadside environment exist not only primary FPs and UFPs but also secondary FPs and UFPs from photochemical reactions or long-range transport. (C) 2012 Elsevier Ltd. All rights reserved.
  PERGAMON-ELSEVIER SCIENCE LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.atmosenv.2012.08.039
  DOI ID：10.1016/j.atmosenv.2012.08.039, ISSN：1352-2310, eISSN：1873-2844, Web of Science ID：WOS:000311188200017
• Gas/particle partitioning of low-molecular-weight dicarboxylic acids at a suburban site in Saitama, Japan　　　　　　　　　　　　　　　
  Linfa Bao; Mariko Matsumoto; Tsutomu Kubota; Kazuhiko Sekiguchi; Qingyue Wang; Kazuhiko Sakamoto
  ATMOSPHERIC ENVIRONMENT, Volume：47, First page：546, Last page：553, Feb. 2012
  Low-molecular-weight dicarboxylic acids (diacids) exhibit semivolatile behavior in the atmosphere, but their partitioning between the gaseous and particulate phases is still unclear. An annular denuder-filter pack system with a cyclone PM2.5 was employed to investigate the gaseous and particulate phase concentrations of diacids, with high collection efficiency of most target compounds. Saturated diacids, unsaturated diacids, ketocarboxylic acids, and dicarbonyls were determined in gaseous and particulate samples collected from a suburban site in Japan, during 2007 summer, 2008 late-winter and early-winter. The concentrations of gaseous and particulate diacids in early-winter were lower than those in summer, but higher than those in late-winter. Individual diacid in gaseous phase showed a relatively good correlation with ambient oxidants, but a low correlation with NO gas (a primary pollutant). Particulate fraction to the total amount (F-p) of individual acid was larger in winter than in summer, and also was larger at night than in the daytime. In the same sample, individual diacid and ketocarboxylic acid had higher particulate phase occurrence (F-p > 56% in summer), whereas unsaturated diacid had higher gaseous phase occurrence (F-p < 18% in summer). In summer, gas/particle partitioning of diacids varied diurnally; F-p values of oxalic and glyoxylic acids increased from their lowest values in the morning to their highest values at night, exhibiting the similar diurnal variation of relative humidity in the atmosphere. The higher humidity at night may lead to the formation of droplets in which water-soluble gaseous phases can dissolve, thus promoting gas-to-particle conversion. These results suggest that gas/particle partitioning of diacids depends not only on the concentrations in the gaseous phase by photochemical oxidation, but also on the characteristics of the atmosphere (e.g., temperature, sunlight, and relative humidity) and the aerosols (e.g., acidity, alkaline composition, and water content). (C) 2009 Elsevier Ltd. All rights reserved.
  PERGAMON-ELSEVIER SCIENCE LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.atmosenv.2009.09.014
  DOI ID：10.1016/j.atmosenv.2009.09.014, ISSN：1352-2310, eISSN：1873-2844, Web of Science ID：WOS:000301157700061
• Release rate of daughter allergenic species from Cryptomeria japonica pollen grains trapped in air polluted wet deposition
  Nakamura, S.; Wang, Q.; Gong, S.; Takai, Y.; Lu, S.; Nakajima, D.; Suzuki, M.; Sekiguchi, K.; Miwa, M.
  WIT Transactions on Ecology and the Environment, Volume：157, 2012
  Scientific journal
  DOI：https://doi.org/10.2495/AIR120341
  DOI ID：10.2495/AIR120341, ORCID：23466810, SCOPUS ID：84865768733
• Release behavior of small sized daughter allergens from Cryptomeria japonica pollen grains during urban rainfall event
  Wang, Q.; Nakamura, S.; Lu, S.; Xiu, G.; Nakajima, D.; Suzuki, M.; Sakamoto, K.; Miwa, M.
  Aerobiologia, Volume：28, Number：1, 2012
  Scientific journal
  DOI：https://doi.org/10.1007/s10453-011-9212-4
  DOI ID：10.1007/s10453-011-9212-4, ORCID：23466797, SCOPUS ID：84862691120
• Effect of phenol concentrations on the condensation reaction during the liquefaction of waste woody materials with phenol
  Wang, Q.; Mitsumura, N.; Chen, Q.; Apar, P.; Qian, Q.; Gui, L.; Niida, H.; Kurokawa, H.; Sekiguchi, K.; Sugiyama, K.
  WIT Transactions on Ecology and the Environment, Volume：163, 2012
  Scientific journal
  DOI：https://doi.org/10.2495/WM120321
  DOI ID：10.2495/WM120321, ORCID：23466845, SCOPUS ID：84867918629
• Characterization of suspended particulate matter emitted from waste rice husk as biomass fuel under different combustion conditions
  Wang, Q.; Maezono, T.; Apaer, P.; Chen, Q.; Gui, L.; Itoh, K.; Kurokawa, H.; Sekiguchi, K.; Sugiyama, K.; Niida, H.; Itoh, S.
  WIT Transactions on Ecology and the Environment, Volume：157, 2012
  Scientific journal
  DOI：https://doi.org/10.2495/AIR120321
  DOI ID：10.2495/AIR120321, ORCID：23466837, SCOPUS ID：84865735286
• Characterization of the physical form of allergenic Cry j 1 in the urban atmosphere and determination of Cry j 1 denaturation by air pollutants
  Qingyue Wang; Jun Morita; Xiumin Gong; Shinichi Nakamura; Miho Suzuki; Senlin Lu; Kazuhiko Sekiguchi; Takuya Nakajima; Daisuke Nakajima; Makoto Miwa
  Asian Journal of Atmospheric Environment, Volume：6, Number：1, First page：33, Last page：40, 2012
  In this study, we characterized the physical form of allergenic Cry j 1 in the urban atmosphere. Through an immunofluorescence antibody method, we showed that allergenic Cry j 1 exists as fine particles (≤1.1 μm). To determine Cry j 1 concentrations and its particle size distribution, we used the ELISA method to confirm that most Cry j 1 exists as fine particles in the urban atmosphere and is found at high concentrations on fine day next to rainy day. Furthermore, we evaluated Cry j 1 denaturation by using the Biacore J system based on the surface plasmon resonence (SPR) principle and sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). We showed that the dissociation constant (KD) of Cry j 1 that has been exposed to urban polluted air is lower (1.76 ×10-14 M) than that of Cry j 1 (1.32×10-9-3.37× 10-9 M) of original pollen grains that has not been exposed to air pollutants. Cry j 1 turns into low molecular weight proteins by reacting with various acidic solutions. In sum, we showed that allergenic Cry j 1 exists as fine particles that can deposit in the lower respiratory tract. This finding clarifies the relationship between Japanese cedar pollinosis and air pollutants.
  Korean Society for Atmospheric Environment, English, Scientific journal
  DOI：https://doi.org/10.5572/ajae.2012.6.1.033
  DOI ID：10.5572/ajae.2012.6.1.033, ISSN：2287-1160, SCOPUS ID：84870012348
• Size distribution of chemical elements and their source apportionment in ambient coarse, fine, and ultrafine particles in Shanghai urban summer atmosphere　　　　　　　　　　　　　　　
  Senlin Lu; Rui Zhang; Zhenkun Yao; Fei Yi; Jingjing Ren; Minghong Wu; Man Feng; Qingyue Wang
  JOURNAL OF ENVIRONMENTAL SCIENCES, Volume：24, Number：5, First page：882, Last page：890, 2012
  Ambient coarse particles (diameter 1.8-10 mu m), fine particles (diameter 0.1-1.8 mu m), and ultrafine particles (diameter < 0.1 mu m) in the atmosphere of the city of Shanghai were sampled during the summer of 2008 (from Aug 27 to Sep 08). Microscopic characterization of the particles was investigated by scanning electron microscopy coupled with energy dispersive X-ray spectroscopy (SEM/EDX). Mass concentrations of Si, P, S, Cl, K, Ca, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, As, Se, Br, Rb, Sr, and Pb in the size-resolved particles were quantified by using synchrotron radiation X-ray fluorescence (SRXRF). Source apportionment of the chemical elements was analyzed by means of an enrichment factor method. Our results showed that the average mass concentrations of coarse particles, fine particles and ultrafine particles in the summer air were 9.38 +/- 2.18, 8.82 +/- 3.52, and 2.02 +/- 0.41 mu g/m(3), respectively. The mass percentage of the fine particles accounted for 51.47% in the total mass of PM10, indicating that fine particles are the major component in the Shanghai ambient particles. SEM/EDX results showed that the coarse particles were dominated by minerals, fine particles by soot aggregates and fly ashes, and ultrafine particles by soot particles and unidentified particles. SRXRF results demonstrated that crustal elements were mainly distributed in the coarse particles, while heavy metals were in higher proportions in the fine particles. Source apportionment revealed that Si, K, Ca, Fe, Mn, Rb, and Sr were from crustal sources, and S, Cl, Cu, Zn, As, Se, Br, and Pb from anthropogenic sources. Levels of P, V, Cr, and Ni in particles might be contributed from multi-sources, and need further investigation.
  SCIENCE PRESS, English, Scientific journal
  DOI：https://doi.org/10.1016/S1001-0742(11)60870-X
  DOI ID：10.1016/S1001-0742(11)60870-X, ISSN：1001-0742, eISSN：1878-7320, Web of Science ID：WOS:000304632700015
• Investigation on behavior of airborne Japanese cedar pollen and its allergen in Saitama 2011　　　　　　　　　　　　　　　
  Shinichi Nakamura; Qingyue Wang; Shiyang Dong; Yuko Takai; Kazuhiko Sekiguchi; Miho Suzuki; Daisuke Nakajima
  29TH SYMPOSIUM ON AEROSOL SCIENCE AND TECHNOLOGY, 2012, First page：63, Last page：64, 2012
  Japanese cedar pollinosis has been increasing in Japan and currently affects over 26.5 % of the population. Japanese cedar pollinosis was concerned an adjuvant effect when pollen and air pollutant was aspirated at the same time. In our previous study, it was reported that daily variation between airborne Japanese cedar pollen and its allergen particles were differed at road side. Therefore, our thought that this phenomenon was stemmed heavy traffic and/or attendant air pollutants. Thus, we investigated behavior of pollen and its allergen at top of building, as back ground, and on road side. In this result, pollen counts and Cry j 1 concentrations were indicated same variation at on road side and at top of building. Though, pollen counts at top of building were higher than them on road side; nevertheless Cry j 1 concentrations were lower than their on road side. Hence, it was thought that pollen grain was changed morphology by heavy traffic and/or attendant air pollutants. In conclusion, we suggest that patients of pollinosis are better to be provided forecast of allergen concentrations with forecast of pollen counts.
  JAPAN ASSOC AEROSOL SCI & TECHNOLOGY, Japanese, International conference proceedings
  Web of Science ID：WOS:000399351200032
• Evaluation of gas adsorption amount in the collection of atmospheric ultrafine particles using inertial filter sampler　　　　　　　　　　　　　　　
  Kazuhiko Sekiguchi; Kenji Sakurai; Qingyue Wang
  29TH SYMPOSIUM ON AEROSOL SCIENCE AND TECHNOLOGY, 2012, First page：41, Last page：42, 2012
  Inertial filter sampler (INF sampler) can collect ultrafine particles (UFPs) uniformly onto a 47 mm phi quartz filter at atmospheric pressure. However, it should be concerned gas adsorption because UFPs are the mixtures of low mass components. In this study, we evaluated gas adsorption of organic carbon (OC) and ion components atmospheric UFPs using INF sampler. The concentrations of OC, elemental carbon (EC), and water-soluble inorganic ions were measured and used for artifact calculation. As a result, about 30 % of OC and 20 % of NO3- collected on the quartz filter were overestimation by gas adsorption.
  JAPAN ASSOC AEROSOL SCI & TECHNOLOGY, Japanese, International conference proceedings
  Web of Science ID：WOS:000399351200021
• Decomposition of organic contaminants in gas and water phase using ultrasonic atomization.　　　　　　　　　　　　　　　
  Kazuhiko Sekiguchi; Ayana Shimizu; Kei Yokoyama; Takaaki Namiki; Qingyue Wang; Norikazu Namiki
  29TH SYMPOSIUM ON AEROSOL SCIENCE AND TECHNOLOGY, 2012, First page：97, Last page：98, 2012
  Ultrasonic atomization was applied to decomposition of organic contaminants in gas and water phase. In recent years, interesting phenomenon regarding ultrasonic atomization have been reported that VOC gases were decomposed and mineralized by photocatalytic reaction on the surface of ultrasonic mist including TiO2 powder and H2O2 which was formed from water by sonolysis. Moreover, ultrasonic atomization has ability to condense substances dissolved in water into droplets in gas-phase. In this study, we decompose organic contaminants in gas and water phases with a combination of the ultrasonic technique mentioned above under UV254 and UV254-135 irradiation.
  JAPAN ASSOC AEROSOL SCI & TECHNOLOGY, Chinese, International conference proceedings
  Web of Science ID：WOS:000399351200049
• Variation of chemical components in ultrafine particles with distance from the roadside　　　　　　　　　　　　　　　
  Kazuhiko Sekiguchi; Qingyue Wang; Masatoshi Kinoshita; Kyung Hwan Kim; Shinji Kudo
  29TH SYMPOSIUM ON AEROSOL SCIENCE AND TECHNOLOGY, 2012, First page：257, Last page：258, 2012
  Ultrafine particles (Dp < 0.1 mu m; PM0.1) and fine particles (Dp < 2.5 mu m; PM2.5) were measured at suburban roadside and background sites to estimate the possible emission sources from chemical components. Atmospheric samplings of PM0.1 and PM2.5 were carried out in summer and winter with 11.5h sampling duration time to observe the variation of chemical components between daytime and nighttime. The carbonaceous components were accounted for 70 % in PM0.1 and for 40 % in PM2.5 at both sites, respectively. The carbonaceous and ionic components in PM0.1 and PM2.5 tended to increase in the daytime. Especially, from the results of chemical analysis and particle number concentrations, it was indicated that PM0.1 contributed to PM2.5 by heterogeneous particle growth. Furthermore, OCl and soot-EC in PM0.1 had the potential for the same emission source like diesel exhaust during winter measuring period.
  JAPAN ASSOC AEROSOL SCI & TECHNOLOGY, Japanese, International conference proceedings
  Web of Science ID：WOS:000399351200129
• Behavior of suspended particulate matter emitted from the combustion of waste rice husk fuel　　　　　　　　　　　　　　　
  Qingyue Wang; Shingo Ito; Takuya Naezono; Apaer Pataer; Qiyu Chen; Kazuhiko Sekiguchi; Gio Ding; Kouiti Ito
  29TH SYMPOSIUM ON AEROSOL SCIENCE AND TECHNOLOGY, 2012, First page：39, Last page：40, 2012
  There are large quantities of waste rice husk around 3 million tons as biomass waste estimated every year in Japan. In recent years, there is an increasing demand on the utilization of unused biomass instead of fossil oil fuel in small size combustors for domestic use and farming-greenhouses heating during the winter season. However, there is lack of regulations or laws in operation for environmental control of the air pollution, the waste disposal and public health. So far, small size combustors are characterized by simplicity on their structure and the low costs while they can emit suspended particulate matter due to their low combustion performance. In this study, we investigated if fossil fuel can be substituted by waste rice husk in the laboratory model combustion experiment. Our experimental results showed that the particulate mass concentrations can be reduced substantially by high temperature combustion. Fine particle size distribution seems to be different with combustion conditions (e.g. smoldering combustion, flaming combustion). We can also suggest that air pollutants can be reduced if we can ensure suitable combustion performance of small size combustors even those falls out of the applicable emissions regulations.
  JAPAN ASSOC AEROSOL SCI & TECHNOLOGY, Japanese, International conference proceedings
  Web of Science ID：WOS:000399351200020
• Airborne behavior of cross-antigenic pollen allergens together with Japanese cedar pollen allergen　　　　　　　　　　　　　　　
  Qingyue Wang; Yuko Takai; Takuya Nakajima; Shinichi Nakamura; Xiumin Gong; Miho Suzuki; Kazuhiko Sekiguchi; Daisuke Nakajima
  29TH SYMPOSIUM ON AEROSOL SCIENCE AND TECHNOLOGY, 2012, First page：67, Last page：68, 2012
  Major allergens of Japanese cedar pollen have cross-antigenicity together with Japanese cypress pollen allergens, since these allergens are similar in their structure. Therefore, it is important for investigation on the airborne behavior of cross-antigenic pollen allergens together with major allergenic Cry j 1, and we will set out to building up that for cedar pollinosis patient for disclosure of information of airborne amount of cross-antigenic allergens during the pollen scattering season. In our study, pollen counts were measured by Durham samplers based on gravity sedimentation and concentrations of Cry j 1 and cross-antigenic pollen allergens together with Cry j 1 in atmosphere were measured by the surface plasmon resonance method. As the results, concentrations of Cry j 1 and cross-antigenic pollen allergens during the daytime were higher than those during the nighttime while the pollen counts tend to increase with the temperature. Concentrations of allergen increased despite decreasing pollen counts from the middle to the end of April, because the pollen grains expanded and eluted allergen contents by precipitation after the scattering. It is important to investigate the concentrations of allergens since pollen counts showed the different behavior with their allergen concentrations.
  JAPAN ASSOC AEROSOL SCI & TECHNOLOGY, Japanese, International conference proceedings
  Web of Science ID：WOS:000399351200034
• Fundamental research on apoptosis inducibility of nitro Japanese cedar pollen allergen　　　　　　　　　　　　　　　
  Qingyue Wang; Shiyang Dong; Jun Morita; Miho Suzuki; Shinichi Nakamura; Xiumin Gong; Kazuhiko Sekiguchi; Daisuke Nakajima
  29TH SYMPOSIUM ON AEROSOL SCIENCE AND TECHNOLOGY, 2012, First page：71, Last page：72, 2012
  Recently, prevalence of Japanese cedar pollinosis has been increasing, and it is observed highly in Kanto area of Japan. As a cause of the high prevalence in Kanto area, we focused attention on 3-nitrotyrosines contained in allergen protein that cause the immune reactions and enhance an immunogenicity of allergen proteins. we clarified that 3-nifrotyrosine, Cry j 1 and Cry j 1 containing 3-nitrotyrosine (i.e. nitro Japanese cedar pollen allergen) induce HeLa cell (epidermoid cell) apoptosis and that nitration of tyrosine residues contained in Cry j 1 was probable to enhance the apoptosis inducibility for HeLa cell. From these results, it is suggested that further investigations will be needed for the behavior and health effect of Cry j 1 and Cry j 1 containing 3-nitrotyrosine in respirable particles.
  JAPAN ASSOC AEROSOL SCI & TECHNOLOGY, Japanese, International conference proceedings
  Web of Science ID：WOS:000399351200036
• P26 Study on gas-phase degradation of organic contaminants in water-phase using ultrasonic atomization(Poster Session)　　　　　　　　　　　　　　　
  Sekiguchi Kazuhiko; Shimizu Ayana; Wang Qingyue
  Proceedings of the Annual Meeting of the Japan Society of Sonochemistry, Volume：21, First page：73, Last page：74, 2012
  Ultrasonic technique is used for various fields, such as cleaning, welding, diffusion and atomization. In particular, ultrasonic atomization, a generating method of fine droplets by subjecting the liquid to the high intensity ultrasound with high frequency, is one of the most attracting techniques. The optimal frequency to generate fine droplets is 2.4 MHz. On the other hand, as an interesting phenomenon, ultrasonic atomization has ability to condense substances in water-phase into droplets in gas-phase. In this study, the condensation effect was applied to degradation of organic contaminants in water-phase. They were highly decomposed with labile species formed by short-wavelength UV irradiation (254+185 nm) or direct UV photolysis. In order to clarify the decomposition effect in gas-phase (O_3, OH radical or UV photolysis), decomposition experiments for organic substances were carried out at various experimental conditions by adding BC particle. This paper indicates a new effective utilization of ultrasonic mist for the treatment of organic contaminants in water-phase.
  The Japan Society of Sonochemistry, Japanese
  DOI：https://doi.org/10.20577/pamjss.21.0_73
  DOI ID：10.20577/pamjss.21.0_73, CiNii Articles ID：110009710744, CiNii Books ID：AA1259907X
• P7 Influence of various factors in the saccharification process of cellulose using ultrasonic irradiation(Poster Session)　　　　　　　　　　　　　　　
  Sekiguchi Kazuhiko; Hayashi Kazuhei; Tahara Yuta; Wang Qingyue
  Proceedings of the Annual Meeting of the Japan Society of Sonochemistry, Volume：21, First page：35, Last page：36, 2012
  Cellulosic biomass is one of the most interested materials for biofuel production. However, existing saccharification methods have several problems. For example, high concentrated sulfuric acid saccharification needs high costs for treatment of wasted acid and enzymicsaccharification is slow and uneconomical. Therefore, more effective and economical saccharification methods are necessary. In the present study, we investigated saccharification of cellulosic biomass with comparative lower concentration of sulfuric acid underultrasonic irradiation with different frequencies. Ultrasonic irradiation in water produces a lot of cavities. They cause physical effects, which give high contact efficiency between sulfuric acid and cellulose, and chemical effects based on active species and temperature, which raise the saccharification reactivity. These effects depend on ultrasonic frequency. We obtained following results when sulfuric acid concentration was 50wt%: Sulfuric acid saccharification under ultrasonic irradiation of 200 kHz promoted cellulose saccharification. And also, when reaction temperature rose from 60℃ to 80℃, the saccharification efficiency under 200 kHz irradiation was improved and higher sugar concentration was obtained.
  The Japan Society of Sonochemistry, Japanese
  DOI：https://doi.org/10.20577/pamjss.21.0_35
  DOI ID：10.20577/pamjss.21.0_35, CiNii Articles ID：110009710725, CiNii Books ID：AA1259907X
• P22 Evaluation of the chemical reactivity of ultrasonic mist with VOC gas using different AOP techniques(Poster Session)　　　　　　　　　　　　　　　
  Sekiguchi Kazuhiko; Namiki Takaaki; Yokoyama Kei; Wang Qingyue; Namiki Norikazu
  Proceedings of the Annual Meeting of the Japan Society of Sonochemistry, Volume：21, First page：65, Last page：66, 2012
  Advanced oxidation processes (AOPs) are very efficient methods for destruction and mineralization of recalcitrant organic compounds. In our previous study, we have suggested the VOC removal processes using ultrasonic mist containing TiO_2 photocatalyst and UV irradiation to generate OH radicals. In this study, the degradation of gaseous VOC, such as toluene using ultrasonic mist without TiO_2 was studied under various conditions. Ultrasonic atomization is a very useful technique to produce fine liquid droples below 10 lam. It was obtained that the removal ratio was higher at the UV/H_2O_2 condition in comparison with at UV/pure water condition. This process can be applied as a new air purification technique.
  The Japan Society of Sonochemistry, Japanese
  DOI：https://doi.org/10.20577/pamjss.21.0_65
  DOI ID：10.20577/pamjss.21.0_65, CiNii Articles ID：110009710740, CiNii Books ID：AA1259907X
• Comparison and trend study on acidity and acidic buffering capacity of particulate matter in China　　　　　　　　　　　　　　　
  Lihong Ren; Wei Wang; Qingyue Wang; XiaoYang Yang; Dagang Tang
  ATMOSPHERIC ENVIRONMENT, Volume：45, Number：39, First page：7503, Last page：7519, Dec. 2011
  The acidity of about 2000 particulate matter samples from aircraft and ground-based monitoring is analyzed by the method similar to soil acidity determination. The ground-based samples were collected at about 50 urban or background sites in northern and southern China. Moreover, the acidic buffering capacity of those samples is also analyzed by the method of micro acid-base titration. Results indicate that the acidity level is lower in most northern areas than those in the south, and the acidic buffering capacity showed inverse tendency, correspondingly. This is the most important reason why the pollution of acidic-precipitation is much more serious in Southern China than that in Northern China. The acidity increases and the acidic buffering capacity drops with the decreasing of the particle sizes, indicating that fine particle is the main influencing factor of the acidification. The ionic results show that Ca salt is the main alkaline substance in particulate matter, whereas the acidification of particulate matter is due to the SO2 and NOx emitted from the fossil fuel burning. And among of them, coal burning is the main contributor of SO2, however the contribution of NOx that emitted from fuel burning of motor vehicles has increased in recent years. By comparison of the experimental results during the past 20 years, it can be concluded that the acid precipitation of particulate matter has not been well controlled, and it even shows an increasing tendency in China lately. The acid precipitation of particulate matter has begun to frequently attack in part of the northern areas. Multiple regression analysis indicates that coefficient value of the ions is the lowest at the urban sites and the highest at the regional sites, whereas the aircraft measurement results are intermediate between those two kinds of sites. (C) 2011 Elsevier Ltd. All rights reserved.
  PERGAMON-ELSEVIER SCIENCE LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.atmosenv.2010.08.055
  DOI ID：10.1016/j.atmosenv.2010.08.055, ISSN：1352-2310, eISSN：1873-2844, Web of Science ID：WOS:000298120400051
• Daytime meteorological structures causing elevated photochemical oxidants concentrations in north Kanto, Japan　　　　　　　　　　　　　　　
  Shinri Hosoi; Hiroshi Yoshikado; Kazuhiko Sekiguchi; Qingyue Wang; Kazuhiko Sakamoto
  ATMOSPHERIC ENVIRONMENT, Volume：45, Number：26, First page：4421, Last page：4428, Aug. 2011
  The north Kanto area is about 150 km north of the heavily populated and industrialized Tokyo metropolis, and local emissions of photochemical oxidants (Ox) precursors are limited because of little anthropogenic emission. Nevertheless, high Ox concentrations exceeding the warning level for Ox (>120 ppbv, 1-h average) are often observed there. We recently reported that high Ox concentrations in the north Kanto area occur under the coupled conditions of a southerly extended sea breeze transporting Ox from the southern urban area and a subsidence inversion layer restricting vertical dispersion. However, these meteorological conditions do not always lead to high Ox concentrations. To identify other conditions affecting the occurrence of high Ox concentrations in north Kanto, we examined meteorological conditions. Key meteorological structures were two thermal lows occurring on sunny days in districts neighboring the Kanto district on the west and north. When both thermal lows persisted in their morning positions until evening, a southerly sea breeze toward the thermal lows was maintained throughout the afternoon, transporting high levels of Ox formed in south Kanto, including Tokyo, to north Kanto. When a thermal low present only in the western district moved eastward to cover the central Kanto area during the afternoon, isobars in north Kanto acquired an east-west orientation and observed wind direction became consistently northerly, thus restricting transport of high Ox from south Kanto. (C) 2011 Elsevier Ltd. All rights reserved.
  PERGAMON-ELSEVIER SCIENCE LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.atmosenv.2011.05.039
  DOI ID：10.1016/j.atmosenv.2011.05.039, ISSN：1352-2310, Web of Science ID：WOS:000293680100011
• Recovery of combustible matter from waste fine Chinese coals by a waste vegetable oil agglomerating process and its combustion characteristics
  Wang, Q.; Kashiwagi, N.; Apaer, P.; Chen, Q.; Wang, Y.; Maezono, T.; Niida, D.
  WIT Transactions on Ecology and the Environment, Volume：143, 2011
  Scientific journal
  DOI：https://doi.org/10.2495/ESUS110281
  DOI ID：10.2495/ESUS110281, ORCID：23466842, SCOPUS ID：79960179954
• Characterization of liquefied products from model woody components in the presence of mineral acid catalysts
  Wang, Q.; Chen, Q.; Apaer, P.; Qian, Q.; Maezono, T.; Mitsumura, N.; Kurokawa, H.; Guo, X.
  WIT Transactions on Ecology and the Environment, Volume：154, 2011
  Scientific journal
  DOI：https://doi.org/10.2495/CHEM110181
  DOI ID：10.2495/CHEM110181, ORCID：23466821, SCOPUS ID：84865562982
• Basic study on combustion characteristics of waste rice husk and emission behavior from a new-type air vortex current combustor
  Wang, Q.; Maezono, T.; Chen, Q.; Apaer, P.; Wang, Y.; Gui, L.; Niida, D.; Mitsumura, N.; Domon, M.; Fujiwara, I.; Yamaguchi, N.
  WIT Transactions on Ecology and the Environment, Volume：154, 2011
  Scientific journal
  DOI：https://doi.org/10.2495/CHEM110191
  DOI ID：10.2495/CHEM110191, ORCID：23466809, SCOPUS ID：84865557266
• P12. Fundamental study on a biomass saccharification process using an ultrasonic wave and a solid acid catalyst(Poster Presentation)　　　　　　　　　　　　　　　
  Tahara Yuta; Sekiguchi Kazuhiko; Wang Qingyue
  Proceedings of the Annual Meeting of the Japan Society of Sonochemistry, Volume：20, First page：115, Last page：118, 2011
  Saccharification of cellulosic biomass is important from the perspective of food protection in order to produce bio-based fuel as ethanol from non-food resources. Therefore, it can become a new chemical industrial process as an alternative exhaustible resource instead of oil. It is well known that saccharification from biomass can be accomplished by enzymatic reaction or sulfuric acid method. However, they have some disadvantages, for example, the former reaction is slow and uneconomical, and the latter method cannot recycle the liquid acid catalyst. Ultrasonic wave has a physical action as stirring and a chemical action as radical reaction by selecting the frequency appropriately. In this study, saccharification of cellulosic biomass was investigated with various recyclable solid acid catalysts. Cellulose was saccharified to low-molecular sugar with the solid acid catalyst under irradiation of an ultrasonic wave. It was found that the saccharification ratio depends on the property of the solid catalyst.
  The Japan Society of Sonochemistry, English
  DOI：https://doi.org/10.20577/pamjss.20.0_115
  DOI ID：10.20577/pamjss.20.0_115, CiNii Articles ID：110009710563, CiNii Books ID：AA1259907X
• Physicochemical characterization and cytotoxicity of ambient coarse, fine, and ultrafine particulate matters in Shanghai atmosphere　　　　　　　　　　　　　　　
  Senlin Lu; Man Feng; Zhenkun Yao; An Jing; Zhong Yufang; Minghong Wu; Guoying Sheng; Jiamo Fu; Shinich Yonemochi; Jinping Zhang; Qingyue Wang; Ken Donaldson
  ATMOSPHERIC ENVIRONMENT, Volume：45, Number：3, First page：736, Last page：744, Jan. 2011
  Epidemiological studies have demonstrated positive relationships between increases in air pollution and adverse health effects. Physicochemical characterization and toxicity of ambient coarse particles (1.8-10 mu m diameter), fine particles (1.8-10 mu m diameter) and ultrafine particles (<0.1 mu m diameter) collected in Shanghai as major air pollutants were investigated. It was found that mass concentrations of different size ambient particles in Shanghai urban atmosphere were higher than those in suburban atmosphere. In addition, the mass concentrations among the different size particles were different. The coarse particles consisted of minerals, while the fine particles were mainly composed of soot aggregates and sulfates; ultrafine particles contained only small amounts of particulates. Crustal elements were mainly distributed in coarse particles, and the anthropogenic elements were mainly found in fine particles. Significant amounts of calcium and magnesium were found in ultrafine particles. Fine particles were found to generate more free radical than coarse and ultrafine particles. Moreover, the results of the cell proliferation assay indicated that ultrafine particles were more cytotoxic than fine and coarse particles. Further investigations are needed to study the mechanism of cytotoxic induced by the ambient particles. (C) 2010 Elsevier Ltd. All rights reserved.
  PERGAMON-ELSEVIER SCIENCE LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.atmosenv.2010.09.020
  DOI ID：10.1016/j.atmosenv.2010.09.020, ISSN：1352-2310, eISSN：1873-2844, Web of Science ID：WOS:000287342800021
• Second harmonic generation by femtosecond Yb-doped fiber laser source based on PPKTP waveguide fabricated by femtosecond laser direct writing　　　　　　　　　　　　　　　
  Chenghou Tu; Zhangchao Huang; Shuanggen Zhang; Minglie Hu; Qingyue Wang; Enbang Li; Yongnan Li; Fuyun Lu
  OPTICS COMMUNICATIONS, Volume：284, Number：1, First page：455, Last page：459, Jan. 2011
  The frequency doubling of femtosecond pulses from an Yb-doped fiber laser source was demonstrated in a PPKTP waveguide fabricated by femtosecond laser direct writing. The PPKTP waveguide contains a fixed period of 8.9 mu m and the feomtosecond fundamental pulses have a central wavelength of 1044 nm. A maximum SHG power of 406 mW was produced, yielding a conversion efficiency of 5.6%. Numerical simulations were carried out to investigate the property of frequency doubling for femtosecond pulses. The results show that the SHG process proceeds even the quasi-phase-matching (QPM) condition is not well satisfied, which is significantly different from that of "long" pulses or CW light and is accorded with the experimental results. (C) 2010 Elsevier B.V. All rights reserved.
  ELSEVIER SCIENCE BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.optcom.2010.09.022
  DOI ID：10.1016/j.optcom.2010.09.022, ISSN：0030-4018, eISSN：1873-0310, Web of Science ID：WOS:000285893200081
• Field investigation on modification of Japanese cedar pollen allergen in urban air-polluted area　　　　　　　　　　　　　　　
  Qingyue Wang; Jun Morita; Shinichi Nakamura; Di Wu; Xiumin Gong; Miho Suzuki; Makoto Miwa; Daisuke Nakajima
  World Academy of Science, Engineering and Technology, Volume：70, First page：624, Last page：629, Sep. 2010
  Cry j 1 is a causative substance of Japanese cedar pollinosis, and it may deteriorate by Cry j 1 invasion to a lower respiratory tract. We observed airborne particles containing Cry j 1 by an immunofluorescence technique using a fluorescence microscope, and we clarified that Cry j 1 exist as aggregates of airborne fine particles (<
  1.1 μm) in the urban atmosphere. Airborne Cry j 1 may react with air pollutants and be denature to a substance deteriorated Japanese cedar pollinosis. Therefore, we applied a sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) to evaluate a Cry j 1 reacted with various air pollutants by liquid phase reaction, and calculated kinetics constants of Cry j 1 extracted from pollens collected in various sites and airborne fine particles containing Cry j 1 by using a surface plasmon resonance (SPR) method. As a result, it is suggested that Cry j 1 may be denatured by air pollutants during the transportation to the urban atmosphere.
  English, Scientific journal
  ISSN：2010-376X, SCOPUS ID：78651533198
• Numerical analysis of mode locking in multi-core photonic crystal fiber　　　　　　　　　　　　　　　
  Fang XiaoHui; Hu MingLie; Li YanFeng; Chai Lu; Wang QingYue
  CHINESE SCIENCE BULLETIN, Volume：55, Number：18, First page：1864, Last page：1869, Jun. 2010
  With linearly coupled nonlinear Schrodinger equations, numerical analysis has been performed on the mode locking forming procedure of a fiber laser in the linear cavity configuration. The fiber is Yb-doped multi-core photonic crystal fiber and semiconductor saturable absorber mirror (SESAM) is adopted as the nonlinear transmission element to start mode locking. Because of the noise randomness, initial pulse would be picked out by SESAM in one or more cores which makes the multi-core mode locking quite different from single-core one. The two situations are compared and fully discussed. Mode locking in multi-core photonic crystal fiber laser can be realized only if the couple coefficient between the cores and the temporal overlap between the pulses in different cores are large enough.
  SCIENCE PRESS, English, Scientific journal
  DOI：https://doi.org/10.1007/s11434-010-3190-8
  DOI ID：10.1007/s11434-010-3190-8, ISSN：1001-6538, Web of Science ID：WOS:000278704700005
• Role of mode coupling on transmission properties of subwavelength composite hole-patch structures　　　　　　　　　　　　　　　
  Changlei Wang; Jianqiang Gu; Jiaguang Han; Qirong Xing; Zhen Tian; Feng Liu; Lu Chai; Yanfeng Li; Minglie Hu; Qingyue Wang; Xinchao Lu; Weili Zhang
  APPLIED PHYSICS LETTERS, Volume：96, Number：25, Jun. 2010
  We report the coupling between surface plasmons and dipole-localized surface plasmons in a composite hole-patch structure at terahertz frequencies. The coupling is found to be changed by increasing the inner patch size, which causes prominent resonance frequency shift in the enhanced transmission. The experimental results show good agreement with numerical simulation. The study clarifies well the nature of coupling between surface plasmons and dipole-localized surface plasmons and is thus of help to identify the role of surface plasmons in the enhanced transmission observed in subwavelength metallic structures. (C) 2010 American Institute of Physics. [doi:10.1063/1.3456377]
  AMER INST PHYSICS, English, Scientific journal
  DOI：https://doi.org/10.1063/1.3456377
  DOI ID：10.1063/1.3456377, ISSN：0003-6951, Web of Science ID：WOS:000279168100002
• Physicochemical characterization and source apportionment of PM2.5 collected in Shanghai urban atmosphere and at Lin'an background atmospheric monitoring station　　　　　　　　　　　　　　　
  Zhen-Kun Yao; Man Feng; Sen-Lin Lu; Jin-Ping Zhang; Qing-Yue Wang; Jia-Liang Feng; Ming-Hong Wu; Guo-Ying Sheng; Jia-Mo Fu
  Zhongguo Huanjing Kexue/China Environmental Science, Volume：30, Number：3, First page：289, Last page：295, Mar. 2010
  The ambient PM2.5 particles were sampled synchronously at two sites,Xujiahui (a commercial center in Shanghai) and Lin'an background atmospheric monitoring station (in Zhejiang Province) in April 2008.The microscopic image of the particles were characterized by using of FESEM/EDS, while their chemical elements composition and the valence of zinc in the samples were investigated by using synchrotron radiation fluorescence technique. The average mass concentrations of PM2.5 in Xujiahui and Lin'an were (131.6±65.2), (83.5±22.9)μg/m3, respectively. The Xujiahui PM2.5 was primarily consisted by soots, flying ash and mineral particles, while the Lin'an PM2.5 was mainly composed by irregular shaped fine particles. Mass concentrations of the 19 elements (P, S, Cl, K, Ca, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, As, Se, Br, Rb, Sr, Pb) were almost higher in Xujiahui PM2.5 than in Lin'an PM2.5. The result of synchrotron radiation XANES indicated that the valence of zinc was mainly in the form of zinc sulfate at the both sites. Enrichment factor analysis demonstrated all the elements except K, Ca was more enriched in Shanghai PM2.5 than in Lin'an PM2.5.
  Chinese, Scientific journal
  ISSN：1000-6923, SCOPUS ID：77952363571
• Multimode transmission in complementary plasmonic structures at terahertz frequencies　　　　　　　　　　　　　　　
  Zhongxiang Zhang; Kam Tai Chan; Yanxia Cui; Sailing He; Changlei Wang; Qirong Xing; Qingyue Wang
  APPLIED PHYSICS LETTERS, Volume：96, Number：7, Feb. 2010
  A three-dimensional subwavelength structure with periodic complementary metal patterns operating in the terahertz range has been proposed and fabricated. The device clearly exhibits three transmission modes under normal incidence, where experimental results obtained by terahertz time domain spectroscopy and simulated results agree very well with each other. The multimode transmission characteristics are found to arise from both localized coupling of fields between the interacting layers and propagating surface waves due to Bloch excitations on the surface of the periodic structure.
  AMER INST PHYSICS, English, Scientific journal
  DOI：https://doi.org/10.1063/1.3318464
  DOI ID：10.1063/1.3318464, ISSN：0003-6951, Web of Science ID：WOS:000274758100087
• Study on coal recovery technology from waste fine Chinese coals by a vegetable oil agglomeration process
  Wang, Q.; Kashiwagi, N.; Apaer, P.; Chen, Q.; Wang, Y.; Maezono, T.
  WIT Transactions on Ecology and the Environment, Volume：142, 2010
  Scientific journal
  DOI：https://doi.org/10.2495/SW100311
  DOI ID：10.2495/SW100311, ORCID：23466815, SCOPUS ID：79960180023
• Evaluation of elution behavior and morphological change of the Cryptomeria japonica pollen grain and release of its daughter allergenic particles by air polluted rainfall
  Wang, Q.; Nakamura, S.; Gong, X.; Lu, S.; Nakajima, D.; Wu, D.; Suzuki, M.; Sakamoto, K.; Miwa, M.
  WIT Transactions on Ecology and the Environment, Volume：136, 2010
  Scientific journal
  DOI：https://doi.org/10.2495/AIR100171
  DOI ID：10.2495/AIR100171, ORCID：23466834, SCOPUS ID：78149316568
• Liquefaction processes and characterization of liquefied products from waste woody materials in different acidic catalysts
  Wang, Q.; Chen, Q.; Apaer, P.; Kashiwagi, N.; Kurokawa, H.; Sugiyama, K.; Wang, X.; Guo, X.
  WIT Transactions on Ecology and the Environment, Volume：142, 2010
  Scientific journal
  DOI：https://doi.org/10.2495/SW100321
  DOI ID：10.2495/SW100321, ORCID：23466828, SCOPUS ID：84865548435
• Perspectives on synergic biological effects induced by ambient allergenic pollen and urban fine/ultrafine particulate matters in atmosphere　　　　　　　　　　　　　　　
  L{\"u; S.-L.; Wang, Q.-Y.; Wu, M.-H.; Feng, M.; Shinichi, N.; Wang, X.-J.; Shinichi, Y.
  Huanjing Kexue/Environmental Science, Volume：31, Number：9, 2010
  Scientific journal
  ORCID：23466786, SCOPUS ID：77957582385
• Apparatus for femtosecond laser measurement　　　　　　　　　　　　　　　
  Qing Sun; Yuqiang Deng; Shiying Cao; Jing Yu; Qingyue Wang; Zhigang Zhang
  5TH INTERNATIONAL SYMPOSIUM ON ADVANCED OPTICAL MANUFACTURING AND TESTING TECHNOLOGIES: OPTICAL TEST AND MEASUREMENT TECHNOLOGY AND EQUIPMENT, Volume：7656, 2010
  Compact and stable fringe resolution autocorrelation apparatus and spectral phase interferometry for direct electric-field reconstruction apparatus have been established. The spectral phase, pulse profile and pulse width can be accurately measured with the home-made apparatus. We have performed theoretical and experimental studies on spectral phase retrieval and pulse profile reconstruction. A wavelet transform technique has been introduced to the spectral phase retrieval process to eliminate the uncertainty which produced from the filter window. According this method, precise spectral phase can be obtained. As a result, precise pulse profile can be reconstructed. The results from the two apparatus have an excellent agreement.
  SPIE-INT SOC OPTICAL ENGINEERING, English, International conference proceedings
  DOI：https://doi.org/10.1117/12.865158
  DOI ID：10.1117/12.865158, ISSN：0277-786X, eISSN：1996-756X, Web of Science ID：WOS:000287797800042
• Comparison of Water-Soluble Organic Components in Size-Segregated Particles between a Roadside and a Suburban Site in Saitama, Japan　　　　　　　　　　　　　　　
  Linfa Bao; Kazuhiko Sekiguchi; Qingyue Wang; Kazuhiko Sakamoto
  AEROSOL AND AIR QUALITY RESEARCH, Volume：9, Number：4, First page：412, Last page：420, Dec. 2009
  To clarify the characteristics of the water-soluble organic components in atmospheric aerosols, size-separated aerosol samples were simultaneously collected at a roadside site (R) and a suburban background site (S) in Saitama, Japan, during spring and summer 2007 and winter 2008. Chemical compositions, including water-soluble organic carbon (WSOC), organic carbon, inorganic ionic components, and individual water-soluble organic acids (saturated dicarboxylic acids, unsaturated dicarboxylic acids, ketocarboxylic acids, and dicarbonyls), were analyzed in size-separated samples. The seasonal variation of WSOC in Saitama aerosols was larger than the spatial difference between the two sites, with summer WSOC concentrations being 2.5-2.8 times those in the other seasons. Seasonal average concentrations of the detected organic acids in PM7.0 were 542 ng/m(3) (R) and 670 ng/m(3) (S). Strong correlations were observed between C-2-C-5 n-dicarboxylic acids and ambient oxidants. The concentration ratios of individual n-dicarboxylic acids (C-2-C-5) to elemental carbon were significantly higher in suburban samples than in roadside samples, indicating that the contribution of secondary formation to these acids was larger in suburban samples. During the warm seasons, the concentrations of sulfate, ammonium, WSOC, and individual acids in fine particles were very high, whereas nitrate, chloride, sodium, and calcium concentrations were higher in coarse particles. Comparisons between the two sites showed that secondary formation contributed more to the total amount of particulate water-soluble organic acids in Saitama aerosols than direct emissions from anthropogenic and natural sources. However, vehicle exhaust was also an important source of dicarboxylic acids in Saitama aerosols, especially in the near-roadside environment.
  TAIWAN ASSOC AEROSOL RES-TAAR, English, Scientific journal
  DOI：https://doi.org/10.4209/aaqr.2009.03.0021
  DOI ID：10.4209/aaqr.2009.03.0021, ISSN：1680-8584, eISSN：2071-1409, Web of Science ID：WOS:000270892800004
• Periodic optical delay line based on a tilted parabolic generatrix helicoid reflective mirror　　　　　　　　　　　　　　　
  Yuebin Wang; Changlei Wang; Qirong Xing; Feng Liu; Yanfeng Li; Lu Chai; Qingyue Wang; Fengzhou Fang; Xiaodong Zhang
  APPLIED OPTICS, Volume：48, Number：11, First page：1998, Last page：2005, Apr. 2009
  We report the design and testing of a novel linear scanning periodic optical delay line (ODL) by use of a helicoid reflective mirror based on a tilted parabolic generatrix that was driven by an electrical motor for a periodic change in the optical path length of the reflected light beam. The divergence and pulse front distortion of the optical beam reflected by the helicoid reflective mirror were simulated based on differential geometry. With a round-trip pass arrangement, a scanning range of delay time as large as 100 ps was obtained by spinning the helicoid reflective mirror with a pitch distance of 7.5 mm. This periodic ODL was used in an optical second-harmonic generation autocorrelator to test the linearity and temporal resolution in comparison with the autocorrelation signal obtained using an ODL structured with a motorized linear translation stage. Experiments demonstrate that our helicoid optical delay device may provide exceptional performance for optical interference, high-resolution terahertz time-domain spectroscopy, and general optical pump-probe experiments. (C) 2009 Optical Society of America
  OPTICAL SOC AMER, English, Scientific journal
  DOI：https://doi.org/10.1364/AO.48.001998
  DOI ID：10.1364/AO.48.001998, ISSN：1559-128X, eISSN：2155-3165, Web of Science ID：WOS:000265620000005
• Phase modulation conversion and conservation in optical parametric amplifier of femtosecond laser pulses　　　　　　　　　　　　　　　
  Dongqing Pang; Weipeng Kong; Lu Chai; Qingyue Wang
  OPTICAL AND QUANTUM ELECTRONICS, Volume：41, Number：5, First page：363, Last page：372, Mar. 2009
  The influence of the pump pulse, group-velocity mismatch, dispersion and self-phase modulation & cross phase modulation on the phase transfer in the OPA process were analyzed. The results show that very sharp phase modulation can be maintained in mid infrared range by optical parametric amplifier. The period and depth of the periodic modulation can also be maintained due to small group-velocity mismatching in the calculated wavelength range.
  SPRINGER, English, Scientific journal
  DOI：https://doi.org/10.1007/s11082-009-9355-5
  DOI ID：10.1007/s11082-009-9355-5, ISSN：0306-8919, Web of Science ID：WOS:000277244900002
• Long-term sulfur emissions and environmental Kuznets curves: Comparison and implications
  Huang, Z.; Tonooka, Y.; Sekiguchi, K.; Wang, Q.; Sakamoto, K.
  Asian Journal of Atmospheric Environment, Volume：3, Number：1, 2009
  Scientific journal
  DOI：https://doi.org/10.5572/ajae.2009.3.1.019
  DOI ID：10.5572/ajae.2009.3.1.019, ORCID：23466796, SCOPUS ID：84870031640
• Influence factors on release and transition of Japanese cedar pollen allergen to fine particle sizes in urban residential atmosphere of Japan　　　　　　　　　　　　　　　
  Wang Qingyue; Nakamura Shinichi; Gong Xiumin; Kurihara Kota; Wu Di; Sakamoto Kazuhiko; Miwa Makoto
  9th International Conference and Exhibition - Healthy Buildings 2009, HB 2009, 2009
  In our field study during the pollination seasons of 2007 and 2008, Japanese cedar pollen and its allergen particles were sampled in the urban residential atmosphere of Saitama, Japan. It was found that fine allergen particles were increased during sunny days after rainfalls despite pollen counts were decreased. In order to find the release mechanism of pollen allergen contents, we performed the elution experiments and morphological observation of allergen concentrations in simulated rain solutions with different inorganic salts which may be eluted from mineral and secondary formed particles. As the results, the daughter allergen particles from large parent pollen grains were determined when contacted with the simulated rain. Based on Japanese classical house structure, the houses are invaded outdoor air by automatic exhaust easily. From these results, allergen particles translated fine particles by rainfall proceed into indoor atmosphere since they easily break through the ventilation, and invade into lower respiratory tract by which can contribute to the hypersensitivity of the asthma in the urban residential area of Japan. In other words, rainfall is one of influence factors on increasing allergen concentrations in indoor atmosphere of the urban residential areas.
  English, International conference proceedings
  SCOPUS ID：84872664059
• Power scaling of THz pulses based on a compact femtosecond photonic crystal fiber laser　　　　　　　　　　　　　　　
  Feng Liu; Youjian Song; Minglie Hu; Yanfeng Li; Weili Zhang; Qirong Xing; Changlei Wang; Yuebin Wang; Lu Chai; Qingyue Wang
  2009 LASERS & ELECTRO-OPTICS & THE PACIFIC RIM CONFERENCE ON LASERS AND ELECTRO-OPTICS, VOLS 1 AND 2, First page：432, Last page：+, 2009
  We present a high power terahertz time-domin spectroscopy(THz-TDS) pumped by an all photonic crystal fiber(PCF) femtosecond laser system, and studied the effects of pulse shape working on the terahertz conversion efficiency
  IEEE, English, International conference proceedings
  Web of Science ID：WOS:000277829300228
• Femto-Second Laser Direct Writing Vertical Microholes in FOTURAN Glass　　　　　　　　　　　　　　　
  Y. Wu; Qingyue Wang
  LASERS IN ENGINEERING, Volume：19, Number：1-2, First page：39, Last page：45, 2009
  Vertical micro-holes were produced in a photosensitive glass (FOTURAN) using a focused femto-sccond laser irradiation at 775 nm, followed by it heat treatment and wet chemical etching in 8% hydrofluoric acid solution for 50 minutes. The micro-holes were analysed by optical and scanning electron microscopy. It is observed that the micro-holes have a circular cross-section and clear edge. Currently, micro-holes with an aspect ratio of about 7:1 can be achieved. By varying the incident laser fluence over a range of 2.3-36.2 J/cm(2) and a laser writing speed of 100-1000 mu m/s, it is possible to produce and characterize micro-holes. It is found that writing speeds hardly affect the micro-hole diameter whereas relatively lower laser fluences result in smaller diameters and the cross-section is more circular.
  OLD CITY PUBLISHING INC, English, Scientific journal
  ISSN：0898-1507, eISSN：1029-029X, Web of Science ID：WOS:000263710600005
• Abatement of indoor air pollution achieved with coal-biomass household briquettes　　　　　　　　　　　　　　　
  Kimiko Yamada; Atsuyuki Sorimachi; Qingyue Wang; Jing Yi; Shunqun Cheng; Yanrong Zhou; Kazuhiko Sakamoto
  ATMOSPHERIC ENVIRONMENT, Volume：42, Number：34, First page：7924, Last page：7930, Nov. 2008
  We investigated the abatement of indoor pollution achieved when two types of coal-biomass briquettes (L-BBs and H-BBs) were used in place of honeycombed coal briquettes (H-coal) in household stoves in rural Chongqing, China. indoor concentrations of sulfur dioxide (502), carbon monoxide (CO), and gaseous fluoride were measured. Additionally, we evaluated the factors that affected indoor concentrations of these gases, including the amount of fuel used as well as its sulfur content, the sulfur-emission ratio determined from the amount of sulfur retained in the combustion ash, and the combustion temperature in the stoves. The average 8-h and 24-h SO2 concentrations for L-BBs were nearly equal to or less than the World Health Organization's 40 ppb guideline, whereas those for H-coal and H-BBs exceeded the guideline. The average 8-h SO2 concentrations for L-BBs were from 63 to 89% lower than those for H-coal, even though the 8-h average weight of fuel and its sulfur content for L-BBs were equal to those of H-coal. A chemical analysis of combustion ash indicated that the sulfur-emission ratio was from 26 to 48% for L-BBs, as compared with 86% for H-coal, and this difference resulted in reduction of indoor SO2 concentrations for L-BBs as compared with H-coal. Most of the 8-h average concentrations of CO and gaseous fluoride for all fuels were lower than the WHO guidelines. We concluded that BBs are a useful domestic fuel for the abatement of indoor air pollution. (C) 2008 Elsevier Ltd. All rights reserved.
  PERGAMON-ELSEVIER SCIENCE LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.atmosenv.2008.07.004
  DOI ID：10.1016/j.atmosenv.2008.07.004, ISSN：1352-2310, eISSN：1873-2844, Web of Science ID：WOS:000260941000010
• Investigation of spectral bandwidth of BBO-I phase matching non-collinear optical parametric amplification from visible to near-infrared　　　　　　　　　　　　　　　
  Bo Liu; Ruobing Zhang; Huagang Liu; Jing Ma; Chen Zhu; Qingyue Wang
  FRONTIERS OF OPTOELECTRONICS, Volume：1, Number：1-2, First page：101, Last page：108, Sep. 2008
  Laser sources which have high power, short time duration and are broadly tunable are needed for the application of ultra-fast lasers. Femtosecond optical parametric amplification (OPA) is one of the most important techniques to produce broadly tunable and several femtosecond laser pulses. To obtain an extremely short pulse, the femtosecond OPA should adequately support a large spectral bandwidth. Ultra-broadband type-I phase matching OPA based on BBO was theoretically investigated. The achromatic phase matching (APM) technology was introduced to femtosecond OPA, and a broadband phase matching condition was given when the signal beams were angularly dispersed. The methods were presented to choose the optimized non-collinear angle and angular dispersion. Effects of non-collinear angle and rate of angular dispersion to the parametric bandwidth were also discussed. The results indicate that a proper non-collinear angle of the noncollinear optical parametric amplifier (NOPA) and getting signal beams dispersed at the right rate in nearinfrared conditions can increase the parametric bandwidth dramatically.
  HIGHER EDUCATION PRESS, English, Scientific journal
  DOI：https://doi.org/10.1007/s12200-008-0014-4
  DOI ID：10.1007/s12200-008-0014-4, ISSN：2095-2759, eISSN：2095-2767, Web of Science ID：WOS:000219671800015
• Femtosecond pulse propagation in temperature controlled gas-filled hollow fiber　　　　　　　　　　　　　　　
  Zhenming Song; Yu Qin; Guangxiao Zhang; Shiying Cao; Dongqing Pang; Lu Chai; Qingyue Wang; Zhong Wang; Zhigang Zhang
  OPTICS COMMUNICATIONS, Volume：281, Number：15-16, First page：4109, Last page：4113, Aug. 2008
  We propose in this paper a novel technique of controlling spectrum expansion of intense femtosecond pulses in argon gas by temperature. The simulation demonstrated that the temperature gradient gas-filled hollow fiber allows more incident pulse energy and therefore more spectra broadening. This scheme has the similar effect as differential pumping, while avoiding the disadvantages of gas flowing through the fiber. (c) 2008 Elsevier B.V. All rights reserved.
  ELSEVIER, English, Scientific journal
  DOI：https://doi.org/10.1016/j.optcom.2008.04.037
  DOI ID：10.1016/j.optcom.2008.04.037, ISSN：0030-4018, eISSN：1873-0310, Web of Science ID：WOS:000257364900033
• Femtosecond laser-induced cell fusion　　　　　　　　　　　　　　　
  Jixian Gong; Xueming Zhao; Qirong Xing; Fang Li; Huanyu Li; Yanfeng Li; Lu Chai; Qingyue Wang; Aleksei Zheltikov
  APPLIED PHYSICS LETTERS, Volume：92, Number：9, Mar. 2008
  Femtosecond laser was employed to induce cell fusion. The interface between two protoplasts of Phaffia rhodozyma in contact was irradiated by femtosecond laser pulses with 1.38x10(4) W for 0.25 s. After about 20 min, the fusion of cells became visible and finally two cells merged into one larger cell within 160 min. Fusion rate at this power level was 80%. The experiments suggested the existence of threshold power for cell fusion induced by femtosecond laser. Regarding femtosecond laser pulses as a trigger, we present a hypothetical model for femtosecond laser-induced cell fusion. (c) 2008 American Institute of Physics.
  AMER INST PHYSICS, English, Scientific journal
  DOI：https://doi.org/10.1063/1.2890070
  DOI ID：10.1063/1.2890070, ISSN：0003-6951, eISSN：1077-3118, Web of Science ID：WOS:000253761500122
• Design rules for phase-matched terahertz surface electromagnetic wave generation by optical rectification in a nonlinear planar waveguide　　　　　　　　　　　　　　　
  Roman R. Musin; Qirong Xing; Yanfeng Li; Minglie Hu; Lu Chai; Qingyue Wang; Yuliya M. Mikhailova; Maksim M. Nazarov; Alexander P. Shkurinov; Aleksei M. Zheltikov
  APPLIED OPTICS, Volume：47, Number：4, First page：489, Last page：494, Feb. 2008
  The theory of guided waves in metal-dielectric planar multilayer structures is applied to reduce the loss and maximize optical nonlinearity for efficient terahertz-field generation in a surface electromagnetic wave by femtosecond laser pulses confined in a chi((2)) nonlinear planar waveguide. For typical parameters of thin-film polymer waveguides and metal-dielectric interfaces, the optimal size of the chi((2)) waveguide core providing the maximum efficiency of terahertz plasmon-field generation is shown to be less than the wavelength of the optical pump field. (c) 2008 Optical Society of America.
  OPTICAL SOC AMER, English, Scientific journal
  DOI：https://doi.org/10.1364/AO.47.000489
  DOI ID：10.1364/AO.47.000489, ISSN：1559-128X, eISSN：2155-3165, Web of Science ID：WOS:000253512100018
• Quantitative analysis of Kerr nonlinearity and Kerr-like nonlinearity induced via terahertz generation in ZnTe　　　　　　　　　　　　　　　
  Zhen Tian; Changlei Wang; Qirong Xing; Jianqiang Gu; Yanfeng Li; Mingxia He; Lu Chai; Qingyue Wang; Weili Zhang
  APPLIED PHYSICS LETTERS, Volume：92, Number：4, Jan. 2008
  Kerr nonlinearity and Kerr-like nonlinearity induced via terahertz generation and the electro-optical effect in ZnTe crystal are investigated. In general, these nonlinear effects are concomitant and difficult to quantitatively analyze in the time domain. Even Z-scan technique, which is a simple and sensitive single-beam method to determine both the sign and magnitude of the nonlinear refractive index as well as the nonlinear absorption coefficient of a given material, cannot quantitatively analyze the contribution of each nonlinear effect directly. A method is proposed in the spectral domain to distinguish between Kerr nonlinearity and Kerr-like nonlinearity. Experimental results agree with theoretical analysis.
  AMER INST PHYSICS, English, Scientific journal
  DOI：https://doi.org/10.1063/1.2838446
  DOI ID：10.1063/1.2838446, ISSN：0003-6951, Web of Science ID：WOS:000252860400006
• P-44 Application of ultrasound to BDF synthesis and purification process(Poster Presentations)　　　　　　　　　　　　　　　
  Sekiguchi Kazuhiko; Mogi Fumie; Kurokawa Hideki; Wang Qingyue; Sakamoto Kazuhiko
  Proceedings of the Annual Meeting of the Japan Society of Sonochemistry, Volume：2007, First page：110, Last page：110, 2007
  The Japan Society of Sonochemistry, English
  DOI：https://doi.org/10.20577/pamjss.2007.suppl.0_110
  DOI ID：10.20577/pamjss.2007.suppl.0_110, CiNii Articles ID：110009710682, CiNii Books ID：AA1259907X
• Influence of nitrogen oxides on heterogeneous uptake and oxidation of sulfur dioxide on yellow sand particles　　　　　　　　　　　　　　　
  Yoichi Horita; Atsuyuki Sorimachi; Hisae Takada; Kazuhiko Sekiguchi; Wang Qingyue; Hidekazu Ishihara; Masataka Nishikawa; Kazuhiko Sakamoto
  PROGRESS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY, VOL I, First page：1272, Last page：1277, 2007
  In China, large amounts of sulfur dioxide (SO2) from coal combustion have been emitted with the progression of industrial and economic activities. In addition, since the emissions of nitrogen oxides and hydrocarbons from automobile exhaust and fossil fuel combustion have been increasing, there is the possibility that ozone (O-3) and gaseous nitric acid (HNO3) would be produced through photochemical reactions. Taking into account those circumstances, the evaluation of the uptake extent of acidic gases and oxidants to mineral dust particles may provide interesting information about the transport and fate of such gases. There are some laboratory studies about the heterogeneous reactions of air pollutants on Chinese mineral dust particles. Furthermore, these reports showed that coexistent components might importantly contribute to heterogeneous uptake and/or to oxidation of SO2. On the other hand, there are a few reports about the possibility that yellow sand particles act as chemical reaction sites in the atmosphere, and as carriers of chemical products, on the basis of chemical analysis of the yellow sand particles during the long-range transport from the source to Japan. Therefore, there is the possibility that air pollutants were attached to yellow sand particles and/or reacted with the particles. In order to obtain information about influence, of moisture, NO2, and gaseous nitric acid (HNO3) on heterogeneous reaction of SO2 on Lanzhou soil particles collected in Lanzhou, China, laboratory experiments were performed in the use of a cylindrical flow reactor. We focused uptake and oxidation of SO2 in this study. The uptake of SO2 was estimated by monitoring the concentration of SO2 continuously. As a result, a high reactivity of SO2 with Lanzhou soil particles was shown. However, the uptake of SO2 was controlled in the presence of HNO3 at < 10% RH, which suggests a rapid acidification of the particle surface by HNO3 uptake. At 80%RH, the uptake of SO2 increased significantly in comparison with < 10%RH and had little influence of NO2 and HNO3. The sulfur oxidation was discussed by means of oxidation ratio of sulfur (ORS). Moisture and NO2 increased the ORS values, and a synergic effect between both components was exhibited. This result indicated the contribution Of NO2 and metal components eluted from the particles to oxidation reaction. HNO3 also contributed to acceleration of oxidation at 80%RH. It is considered that the characteristic transformation of the China loess particle surfaces by SO2 uptake might be related significantly to moisture, NO2, and HNO3.
  SCIENCE PRESS BEIJING, English, International conference proceedings
  Web of Science ID：WOS:000252307300238
• Comparison of Fourier-transform analysis with wavelet-transform analysis in terahertz time-domain spectroscopy　　　　　　　　　　　　　　　
  Lang Liying; Wang Xueguang; Deng Yuqiang; Xing Qirong; Chai Lu; Wang Qingyue
  27TH INTERNATIONAL CONGRESS ON HIGH SPEED PHOTOGRAPHY AND PHOTONICS, PRTS 1-3, Volume：6279, 2007
  In this paper, we applied wavelet-transform to analysis the water vapor absorption spectroscopy in terahertz range, and compared with conventional Fourier-transform analysis in terahertz time-domain spectroscopy. The extracted absorption lines are in excellent agreement with the results of using Fourier-transform analysis. The results show that wavelet-transform analysis of the absorption spectrum delivers accurate absorption lines in THz range. Because the results are shown in a time-frequency domain, it gives a more intuitive image on when the absorption happens at which frequency. Combining wavelet-transform technique with THz-TDS, we hope there births a new spectroscopy: the wavelet-transform terahertz time-domain spectroscopy.
  SPIE-INT SOC OPTICAL ENGINEERING, English, International conference proceedings
  DOI：https://doi.org/10.1117/12.725463
  DOI ID：10.1117/12.725463, ISSN：0277-786X, eISSN：1996-756X, Web of Science ID：WOS:000245033602033
• Influence of two-photon absorption and optical excitation size on the THz radiation via optical rectification　　　　　　　　　　　　　　　
  Lang Liying; Wang Xiannong; Wang Xueguang; Xing Qirong; Chai Lu; Wang Qingyue
  27TH INTERNATIONAL CONGRESS ON HIGH SPEED PHOTOGRAPHY AND PHOTONICS, PRTS 1-3, Volume：6279, 2007
  Although the ZnTe crystal used the generation of THz radiation has a favorable phase matching properties at 820nm, it has strong third-order nonlinearity, such as two-photon absorption effect. And we found experimentally that, the effect of two-photon absorption in ZnTe on the THz radiation was not neglect. In addition, due to optical rectification and diffraction effect, the generated efficiency of THz radiation is also related to the optical excitation size in the emitter. In this paper, by taking into account optical rectification, diffraction and two-photon absorption effects, the theoretical model is established to describe the emitting field intensity of THz radiation. There is excellent agreement between the theoretical results and the experimental data. The good agreement demonstrates that there is a trade-off between these three effects for THz radiation.
  SPIE-INT SOC OPTICAL ENGINEERING, English, International conference proceedings
  DOI：https://doi.org/10.1117/12.725739
  DOI ID：10.1117/12.725739, ISSN：0277-786X, eISSN：1996-756X, Web of Science ID：WOS:000245033602055
• Transmission Properties of Metallic Grating with Subwavelength Slits in THz Frequency Region　　　　　　　　　　　　　　　
  Dong Liang; Qirong Xing; Zhen Tian; Changlei Wang; Weili Zhang; Jianqiang Gu; Yanfeng Li; Lu Chai; Qingyue Wang; Aleksei Zheltikov
  ACTIVE AND PASSIVE ELECTRONIC COMPONENTS, Volume：2007, 2007
  This paper presents a fully experimental and theoretical study on transmission properties of a deep metallic grating with subwave-length slits in THz frequency region by using THz time domain spectroscopy (THz-TDS). The grating exposed to p-polarized incident wave exhibits enhanced nonresonant transmission in the long-wavelength region where the incident wavelength is larger than the grating period. Wood anomalies are observed when the wavelength is comparable to the grating period. Strict theory is given to explain the experimental results and the two are in good agreement. It is proposed that theWood dips may be considered a criterion and a tool to judge and control the uniformity or fabricating accuracy of the grating period. Copyright (C) 2007 Dong Liang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
  HINDAWI LTD, English, Scientific journal
  DOI：https://doi.org/10.1155/2007/63139
  DOI ID：10.1155/2007/63139, ISSN：0882-7516, eISSN：1563-5031, Web of Science ID：WOS:000210438600011
• Measurement of polycyclic aromatic hydrocarbons in bio-diesel exhaust particles　　　　　　　　　　　　　　　
  Toshinori Shirai; Fumie Mogi; Kazuhiko Sekiguchi; Qingyue Wang; Hideki Kurokawa; Yuji Yoshimura; Kazuhiko Sakamoto
  PROGRESS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY, VOL I, First page：516, Last page：522, 2007
  We measured fine particles in the diesel (DF) or bio-diesel fuel (131317) combustion exhaust generated by a diesel power generator (YDG5500B Yanmer) at two different loads (0 and 1500 W). After the dilution of exhausts to 300 times, fine particles were collected with quartz fiber filter and the size-distributions were measured with Scanning Mobility Particle Sizer. Ionic components, organic and elemental carbon, and polycyclic aromatic hydrocarbon (PAHs) were analyzed with lonchromatograph, Thermal Optical Carbon Analyzer, and high-performance liquid chromatograph-fluorescence detector respectively. The chemical compositions and number-size distributions of fine particles were observed at the different combination of DF or BDF and miner, or synthetic lubricant. In the size distributions of diesel and bio-diesel exhaust particles at the different load modes, respective size distribution under low loa condition showed lower mass concentration than high load condition. When using BDF, more organic carbon (OC) was emitted than when using DF without considerable change on number-size distribution of particles, while more elemental carbon (EC) and PAHs were emitted when using DF. In the combination BDF and synthetic lubricating oil, the lowest concentration of EC, total PAHs and respective PAH were observed in the exhaust. These results suggest that 6 exhaust quality from BDF combustion can improve when replacing mineral lubricating oil to synthetic lubricating oil.
  SCIENCE PRESS BEIJING, English, International conference proceedings
  Web of Science ID：WOS:000252307300092
• Ambient air measurements of six bifunctional carbonyls in a suburban area　　　　　　　　　　　　　　　
  Ricardo Ortiz; Hiroyuki Hagino; Kazuhiko Sekiguchi; Qingyue Wang; Kazuhiko Sakamoto
  ATMOSPHERIC RESEARCH, Volume：82, Number：3-4, First page：709, Last page：718, Dec. 2006
  Low-molecular-weight carbonyl compounds, generated by photochemical reactions in the atmosphere and found in the exhaust of motor vehicles, have recently come to the attention of researchers because some of them are suspected carcinogens or mutagens. Six bifunctional carbonyl compounds were detected and measured in a suburban site 30 km northwest of the Tokyo metropolitan area. Samples were taken on five sunny days between 2 August and 11 August 2003 with a low-volume denuder and three-filter tandem system using O-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine (PFBHA) as a sorbent. Bifunctional carbonyls were measured by gas chromatography-mass spectrometry after two derivatization processes with PFBHA and N,O-bis(trimethylsilyl)trifluoroacetamide (BSTFA). The average total (gas plus particle) concentrations were 162.8 ng m(-3) for pyruvic acid, 113.7 ng m(-3) for methylglyoxal, 36.0 ng m(-3) for glycolaldehyde and 58.6 ng m(-3) for glyoxal. (c) 2006 Published by Elsevier B.V.
  ELSEVIER SCIENCE INC, English, Scientific journal
  DOI：https://doi.org/10.1016/j.atmosres.2006.02.025
  DOI ID：10.1016/j.atmosres.2006.02.025, ISSN：0169-8095, eISSN：1873-2895, Web of Science ID：WOS:000242926500024
• The effect of two-photon absorption and optical excitation area on the generation of THz radiation　　　　　　　　　　　　　　　
  Qirong Xing; Liying Lang; Zhen Tian; Ning Zhang; Shuxin Li; Kai Wang; Lu Chai; Qingyue Wang
  OPTICS COMMUNICATIONS, Volume：267, Number：2, First page：422, Last page：426, Nov. 2006
  It was found experimentally that the THz radiation throughput based on optical rectification is strongly related to the optical excitation size in a ZeTe emitter. The factors affecting the THz radiation throughput are investigated in detail both experimentally and theoretically. By taking into account optical rectification, diffraction and two-photon absorption effects, a theoretical model is established to describe the emitting field intensity of THz radiation. There is excellent agreement between the theoretical results and the experimental data under high excitation power. Both theoretical and experimental results demonstrate that there is a trade-off between these three effects for THz radiation, and that in order to increase the THz radiation throughput based on optical rectification, one should choose suitable excitation size under a given pump power. (c) 2006 Elsevier B.V. All rights reserved.
  ELSEVIER, English, Scientific journal
  DOI：https://doi.org/10.1016/j.optcom.2006.06.051
  DOI ID：10.1016/j.optcom.2006.06.051, ISSN：0030-4018, eISSN：1873-0310, Web of Science ID：WOS:000242100400020
• Enhanced zero-order transmission of terahertz radiation pulses through very deep metallic gratings with subwavelength slits　　　　　　　　　　　　　　　
  Qirong Xing; Shuxin Li; Zhen Tian; Dong Liang; Ning Zhang; Liying Lang; Lu Chai; Qingyue Wang
  APPLIED PHYSICS LETTERS, Volume：89, Number：4, Jul. 2006
  Very deep metallic grating structures with subwavelength slits are processed to study the transmission properties of terahertz radiation pulses. The experiments have been performed with two samples. The delay of the terahertz pulses and the corresponding enhanced unresonant transmission spectra through the samples are observed. A simple interpretation is presented based on the combination of zero-order diffraction of the gratings with the coupling of the surface plasmon polaritons formed on the top and bottom of the gratings. The experimental results are in good agreement with theoretical calculations.
  AMER INST PHYSICS, English, Scientific journal
  DOI：https://doi.org/10.1063/1.2235844
  DOI ID：10.1063/1.2235844, ISSN：0003-6951, eISSN：1077-3118, Web of Science ID：WOS:000239376500007
• Investigation of variations in suspended particulate matter with enforcement of regulations on diesel vehicle exhaust in suburban Japan
  Jiang, Z.; Wang, Q.; Sekiguchi, K.; Sakamoto, K.
  JSME International Journal, Series B: Fluids and Thermal Engineering, Volume：49, Number：1, 2006
  Scientific journal
  DOI：https://doi.org/10.1299/jsmeb.49.2
  DOI ID：10.1299/jsmeb.49.2, ORCID：23466823, SCOPUS ID：33747727570
• Spectral properties of very deep zero-order metallic gratings with subwavelength slits at THz frequency region　　　　　　　　　　　　　　　
  Zhen Tian; Qirong Xing; Dong Liang; Ning Zhang; Jianqiang Gu; Chai Lu; Qingyue Wang; Weili Zhang
  TERAHERTZ PHYSICS, DEVICES, AND SYSTEMS, Volume：6373, 2006
  To study the reflection and transmission properties of the gratings, a novel system based on terahertz time domain spectroscopy was established. With this system, we have synchronously measured both the reflection and transmission spectra of the deep zero-order grating with subwavelength slits. In the experiments we found that the enhanced transmission spectra of the grating are complementary to the reflection spectra, which strongly depend on the geometry of the sample and the grating pose relative to the incident THz radiation, such as leaning from incident THz radiation and slits direction of the gratings out of p-polarized radiation. The experimental results agree with the theoretical analysis based on the surface plasmon polaritons and waveguide theory.
  SPIE-INT SOC OPTICAL ENGINEERING, English, International conference proceedings
  DOI：https://doi.org/10.1117/12.685718
  DOI ID：10.1117/12.685718, ISSN：0277-786X, Web of Science ID：WOS:000243901900008
• Experimental observation of electric-field poling in femtosecond laser carved LiNbO3 crystal　　　　　　　　　　　　　　　
  Ying Wang; Zhigang Zhang; Xiaochang Ni; Jian Yu; Mei Sang; Lei Ji; Qingyue Wang
  ADVANCED LASER TECHNOLOGIES 2005, PTS 1 AND 2, Volume：6344, 2006
  We report a preliminary experiment result of poling in a femtosecond-laser-treated LiNbO3 (LN) crystal. Because of the precision of the femtosecond laser machine, we can control the width and depth of snicks exactly. Then the high-voltage electric field was operated on +z side of the LN crystal. The visible poling pattern was observed by it microscope and machining parameter influences the electric field distribution in the crystal. This approach does not need expensive masks and the periods of PPLN can be adjusted flexibly. Although the mechanism of core formation is not very clear yet, we believe that it would provide a novel technique of making prototype PPLN and other periodically poled crystals.
  SPIE-INT SOC OPTICAL ENGINEERING, English, International conference proceedings
  DOI：https://doi.org/10.1117/12.693431
  DOI ID：10.1117/12.693431, ISSN：0277-786X, eISSN：1996-756X, Web of Science ID：WOS:000239452900012
• Experimental study of the transmission and reflection properties of very deep zero-order metallic gratings with subwavelength slits in THz frequency region　　　　　　　　　　　　　　　
  Qirong Xing; Dong Liang; Zhen Tian; Ning Zhang; Jianqiang Gu; Shuxin Li; Lu Chai; Qingyue Wang
  CONFERENCE DIGEST OF THE 2006 JOINT 31ST INTERNATIONAL CONFERENCE ON INFRARED AND MILLIMETER WAVES AND 14TH INTERNATIONAL CONFERENCE ON TERAHERTZ ELECTRONICS, First page：241, Last page：241, 2006
  A novel system based on terahertz time domain spectroscopy was established. On this system, we experimentally studied both the reflection and transmission properties of the deep zero-order grating with subwavelength slits. Enhanced transmission spectra were observed, which were strongly dependent on the geometry of the sample and complementary to the reflection spectra. The experimental results agree well with the theoretical analysis.
  IEEE, English, International conference proceedings
  Web of Science ID：WOS:000246942200239
• Measurement of indoor sulfur dioxide emission from coal-biomass briquettes
  Isobe, Y.; Yamada, K.; Wang, Q.; Sakamoto, K.; Uchiyama, I.; Mizoguchi, T.; Zhou, Y.
  Water, Air, and Soil Pollution, Volume：163, Number：1-4, 2005
  Scientific journal
  DOI：https://doi.org/10.1007/s11270-005-1296-4
  DOI ID：10.1007/s11270-005-1296-4, ORCID：23466820, SCOPUS ID：20544449935
• Experimental Study on Combustion and Pollutant Control of Biobriquette　　　　　　　　　　　　　　　
  Lu, G.; Wang, Q.; Sakamoto, K.; Kim, H.; Naruse, I.; Yuan, J.; Maruyama, T.; Kamide, M.; Sadakata, M.
  Energy and Fuels, Volume：14, Number：6, 2000
  Scientific journal
  ORCID：23466789, SCOPUS ID：0001509475
• Environmental problems of foreign countries. Asia,Africa,and South America. Contamination problems of atomospheric emvironment in China. The present and the future.　　　　　　　　　　　　　　　
  WANG Qing Yue
  Journal of Environmental Conservation Engineering, Volume：27, Number：9, First page：616, Last page：623, Sep. 1998
  Society of Environmental Conservation Engineering, Japanese
  DOI：https://doi.org/10.5956/jriet.27.616
  DOI ID：10.5956/jriet.27.616, ISSN：0388-9459, CiNii Articles ID：10029245532, CiNii Books ID：AN00046213
• Wintertime Photochemical Air Pollution as a Cause of Heavy NO₂ Pollution in Kanto Plain, Japan　　　　　　　　　　　　　　　
  KANEYASU Naoki; YOSHIKADO Hiroshi; MIZUNO Tateki; TANAKA Toshiyuki; SAKAMOTO Kazuhiko; WANG Qing Yue; SOFUKU Masataka
  Journal of Japan Society for Atmospheric Environment / Taiki Kankyo Gakkaishi, Volume：29, Number：2, First page：80, Last page：91, 1994
  Field observations of wintertime photochemical pollution have been conducted in order to investigate the cause of severe NO₂ pollution that often occurs in early winter in the Kanto Plain, Japan. Intensive measurements of secondary photochemical products were carried out on November 26 and 27 and December 6 and 7, 1991, when high concentrations of NO₂ (>90 ppb) were observed. Sampling sites were located in the Metropolitan Tokyo area, as well as four sites at inland of the Kanto Plain, and a site at the top of Mt. Tsukuba (800 m height, 50 km northeast of Tokyo). During the intensive measurement period, daily maximum concentrations of peroxyacetylnitrate (PAN) were 3.9-11.7 ppb on the coast at Tokyo Bay; diurnal variation was similar to that of [PO (=NO₂+0₃) NO₂^Prime (primarily emitted NO₂)]. The diurnal variation of total inorganic nitrates concentrations showed a daytime maximum except on December 7; it reached an extremely high value (59 μg m^-3) on December 6. Acetaldehyde/CO ratio also showed remarkable daytime maxima on December 6 and 7. The behavior of photochemical products indicates that the NO_x-hydrocarbons system photochemical reactions were dominant during this period. In addition, shipboard measurements in Tokyo Bay suggested that PO is predominantly in the form of O₃ above Tokyo Bay, which is contrary to land-based measurements. The results of this study further suggest that the photochemical formation of nitrate is one of the causes of suspended particulate matter (SPM) pollution, which is often accompanied by high concentrations of NO₂.
  Japan Society for Atmospheric Environment
  DOI：https://doi.org/10.11298/taiki1978.29.2_80
  DOI ID：10.11298/taiki1978.29.2_80, ISSN：0386-7064, CiNii Articles ID：130003978127

• Microplastics exposure routes and toxicity studies to ecosystems: An overview　　　　　　　　　　　　　　　
  Christian Ebere Enyoh; Leila Shafea; Andrew Wirnkor Verla; Evelyn Ngozi Verla; Wang Qingyue; Tanzin Chowdhury; Marcel Paredes
  Environmental Health and Toxicology, Volume：35, Number：1, 01 Mar. 2020
  Microplastics (MPs) are now ubiquitous in global ecosystem, therefore all biota is at risk of exposure and potential toxicity. In this study, we presented an overview of information based on literature concerning exposure to MPs and the toxicity of such exposure. Currently, four major routes of exposure have been identified including entanglement, contact, ingestion and inhalation. Humans maybe the most exposed organism because they are at the peak of the food chain. Toxicology effect to marine and freshwater organisms are classified based on exposure dosage as either high (mortality, decreased reproductive output, organ damage) or low (changes in behavior with time). On plants, reports have shown that MPs exposure can affect negatively the growth and depending on exposure concentration and types of MPs and oxidative activities. However, effects on plants maybe short-term and transient. Although, toxicity studies regarding human are still ongoing as per reports, plants and animals are still scantly studied. Animal toxicity studies have widely used D. magna as model specie. MPs pollution may have a knock-on effect on trophic structure and functioning of ecosystems by affecting the base of the food chain. We concluded by identifying the gap in knowledge and give recommendations for future research.
  Korean Society of Environmental Health and Toxicology, English, Book review
  DOI：https://doi.org/10.5620/eaht.e2020004
  DOI ID：10.5620/eaht.e2020004, ISSN：2233-6567, SCOPUS ID：85083253938
• Autumn herbaceous pollinosis : a study of monitoring methods used for airborne Giant Ragweed pollen　　　　　　　　　　　　　　　
  王 青躍; 大塚 岳; 董 詩洋; 石原 数也; 呂 森林; 関口 和彦
  Volume：61, Number：2, First page：49, Last page：55, Apr. 2016
  Japanese
  ISSN：0387-1851, CiNii Articles ID：40020838511, CiNii Books ID：AN00187066
• Effects of Environmental Pollutants on Airborne Pollen Grains and the Behavior of Release Allergenic Species　　　　　　　　　　　　　　　
  WANG Qingyue; GONG Xiumin; DONG Shiyang; SEKIGUCHI Kazuhiko; SUZUKI Miho; NAKAJIMA Daisuke; MIWA Makoto
  Earozoru Kenkyu, Volume：29, Number：1, First page：s197, Last page：s206, 2014
  This paper reports on the absorption of environmental pollutants into various airborne pollen grains, aggravation of allergenicity, damage to the pollen cell walls, and the airborne behavior of fine allergenic particles, especially those released from Cryptomeria japonica (Japanese cedar) pollen, as abundantly determined on sunny days following rainfall. <BR>From the result of rainfall sampling and analysis, it was indicated that a great number of pollens were trapped in initial precipitation. At the same time, many burst pollen grains were also observed in the rainwater. Thus, it was possible that fine allergenic particles such as fractions of cell wall and contents of pollen were released from the bursting of pollen grains. On the other hand, elution of allergenic contents was increased when contacted with a weakly basic solution containing Ca2＋ ions. Therefore, we think that one important factor contributing to the small-sized allergenic particles was induced by contact with rainfall after long-range transportation events of Asian dust.<BR>We succeeded for the first time in detecting fine allergenic contents containing 3-nitrotyrosine in urban atmosphere and clarified that 3-nitrotyrosine induces HeLa cell apoptosis. We summarized the various studies to elucidate the scattering behavior of various pollens, focusing on Cryptomeria japonica pollen and its allergenic particles in the urban atmosphere. This study has the potential for future developments in palynology.
  Japan Association of Aerosol Science and Technology, Japanese
  DOI：https://doi.org/10.11203/jar.29.s197
  DOI ID：10.11203/jar.29.s197, ISSN：0912-2834, CiNii Articles ID：130003393428, CiNii Books ID：AN10041511
• Behavior of Chemical Components in PM0.1 and PM2.5 Transported from Roadside to Background Sites　　　　　　　　　　　　　　　
  SEKIGUCHI Kazuhiko; KINOSHITA Masatoshi; SAKURAI Kenji; Hwan KIM Kyung; WANG Qingyue; HAGINO Hiroyuki
  Earozoru Kenkyu, Volume：29, Number：1, First page：s55, Last page：s65, 2014
  This study utilized an inertial filter (INF) sampler to evaluate gas adsorption and chemical components in ultrafine particles (Dp < 0.1 μm; PM0.1). They were measured at suburban roadside and background sites under low conditions of PM vaporization and gas adsorption and compared with the components of fine particles (Dp < 2.5 μm; PM2.5). Atmospheric samplings of PM0.1 and PM2.5 were performed in summer and winter with 11.5 h sampling durations to observe the variation of chemical components between daytime and nighttime and to clarify the emission sources and the growth behavior of PM0.1to PM2.5. It was shown that the main components in PM0.1 and PM2.5 were different. Carbonaceous components at both sites accounted for 70 % in PM0.1 and for 40 % in PM2.5 respectively, because ionic components were dominant in PM2.5. The carbonaceous and ionic components near the roadside in PM0.1 had a tendency to be transported to background sites as they expanded via heterogeneous nucleation, especially in winter. Ultrafine particles with a diameter of 20-30 nm and OC1 fraction in OC components were confirmed only in winter, and OC1 fraction indicated higher correlation with soot EC components at both sites. Therefore, it was thought that OC1 fraction was emitted from the diesel exhaust and played an important role in the growth of PM0.1 to PM2.5.
  Japan Association of Aerosol Science and Technology, Japanese
  DOI：https://doi.org/10.11203/jar.29.s55
  DOI ID：10.11203/jar.29.s55, ISSN：0912-2834, CiNii Articles ID：130003393438, CiNii Books ID：AN10041511
• Development of Degradation Treatment Process for VOC Gases Using Mist Containing Hydrogen Peroxide　　　　　　　　　　　　　　　
  NAMIKI Takaaki; SEKIGUCHI Kazuhiko; WANG Qingyue; NAMIKI Norikazu; AZUMA Kenichi; TAMURA Hajime; SUWA Yoshihide; KAGI Naoki; FUJII Shuji
  Earozoru Kenkyu, Volume：29, Number：2, First page：112, Last page：118, 2014
  Degradation of volatile organic compound (VOC) gas by ultrasonic mist was investigated using a batch reactor under various experimental conditions. The experiments were conducted with or without hydrogen peroxide (H2O2) under 254 nm of UV irradiation. In the techniques with H2O2, VOC gas was removed by adsorption or reaction with OH radicals generated from H2O2 on the mist surface or inside it. Since 100% of toluene gas could be removed under all conditions by the adsorption or reaction with OH radicals on the mist surface, we evaluated the reactivity under the various experimental conditions by their reaction rates. The removal rate of toluene under UV/H2O2/mist condition was faster than that under UV/pure water/mist condition. Therefore, it is evident that H2O2 plays an important role in the generation of OH radicals and removal of gaseous VOC. Furthermore, in cases of 200 kHz of high frequency ultrasonic irradiation for the continuous generation of H2O2, sufficient removal rates were obtained not only under 200 kHz/UV/pure water/mist condition but also under 200 kHz/pure water/mist condition. Therefore, the results indicate that 200 kHz of ultrasound irradiation has a capability of continuous supply of H2O2, and a direct reaction with toluene by creating reactive cavities.
  Japan Association of Aerosol Science and Technology, Japanese
  DOI：https://doi.org/10.11203/jar.29.112
  DOI ID：10.11203/jar.29.112, ISSN：0912-2834, CiNii Articles ID：130004837985
• Evaluation of Organic Gas Adsorption during Collection of Atmospheric Ultrafine Particles Using an Inertial Filter Sampler　　　　　　　　　　　　　　　
  SAKURAI Kenji; SEKIGUCHI Kazuhiko; WANG Qingyue; FURUUCHI Masami; HATA Mitsuhiko
  Earozoru Kenkyu, Volume：29, Number：2, First page：119, Last page：123, 2014
  An inertial filter (INF) sampler can collect ultrafine particles (UFP) uniformly onto a 47 mmφ quartz filter with a low pressure drop (20–30 kPa) at 40 L/min. However, gas adsorption may influence chemical composition of UFP as a positive artifact during sampling period owing to very low mass concentration of UFP. In this study, we evaluated organic gas adsorption onto the quartz filter settled in the INF sampler during collection of atmospheric UFP in summer and winter to elucidate the influence of seasonal temperature and relative humidity. The filter samples collected by the INF sampler were analyzed for organic carbon (OC), elemental carbon (EC) by a thermal/optical carbon analyzer following the IMPROVE method.As a result, the artifacts of OC ranged from 33.0±11.7% in summer to 27.8±12.0% in winter, a large difference in the OC concentration was not observed between the seasons. The artifacts for each OC fraction showed that OC1 and OC4 were almost not adsorbed onto the filter but OC2 and OC3 were adsorbed about 40%, indicating that high boiling point components were adsorbed onto the filter at the high flow rate condition. From these results, it was thought that the gas adsorption was relatively low for the mass concentration of UFP and the INF sampler can be a useful device for UFP collection.
  Japan Association of Aerosol Science and Technology, Japanese
  DOI：https://doi.org/10.11203/jar.29.119
  DOI ID：10.11203/jar.29.119, ISSN：0912-2834, CiNii Articles ID：130004837986
• P-097 Benzo[c]fluorene the major contributor to cancer potency in ambient air : the concentration and the distribution in Japan(Poster presentation)　　　　　　　　　　　　　　　
  Yagishita Mayuko; Kageyama Shiho; Shiraishi Fujio; Ohshima Shigeru; Wang Qingyue; Goto Sumio; Aoki Yasunobu; Nakajima Daisuke
  Taikai Program Yoshisyu of the Environmental Mutagen Society of Japan, Number：42, First page：123, Last page：123, 30 Oct. 2013
  The Environmental Mutagen Society of Japan, Japanese
  CiNii Articles ID：110009732510, CiNii Books ID：AA11167240
• 3-3-3 Basic study on heterogeneous reaction between tar and ash from cellulose pyrolysis　　　　　　　　　　　　　　　
  WANG Qingyue; ENDO Takumi; APAER Pataer; CHEN Qiyu; NIIDA Hiroki; SEKIGUCHI Kazuhiko; MITSUMURA Naoki
  日本エネルギー学会大会講演要旨集, Volume：22, Number：22, First page：72, Last page：73, 29 Jul. 2013
  Pyrolysis and gasification technology is one of the energy conversion methods using biomass. The fuel gas is obtained by pyrolysis and gasification reactions, but condensable organic compounds so-called tar is also generated. Tar clogs the pipe of gasifier and break turbine, therefore must be reduced. In a fluidized bed gasifier, contact frequency between tar and ash is high, thus, tar reduction effect by ash contained in the biomass is expected. In this study, we have conducted an experiment thermal decomposition of cellulose by constructing an experimental device that assumes the heterogeneous reaction in a fluidized bed gasifier. K_2CO_3 and Ca(OH)_2 that are compound of K and Ca contained in the biomass ash were selected as the catalysts. The amount of condensable products and heavy tar were decreased, also the amount of gaseous products were increased by installing K_2CO_3 and Ca(OH)_2 In heterogeneous reaction between tar and ash, K_2CO_3 and Ca(OH)_2 have the catalytic effect to decompose the tar, to enhance gaseous production.
  The Japan Institute of Energy, Japanese
  DOI：https://doi.org/10.20550/jietaikaiyoushi.22.0_72
  DOI ID：10.20550/jietaikaiyoushi.22.0_72, CiNii Articles ID：110009799284, CiNii Books ID：AA12292973
• 7-3-1 Resolving solution interface reaction of pyrite during oil agglomeration for developing desulfurization and coal cleaning efficiency　　　　　　　　　　　　　　　
  WANG Qingyue; NIIDA Hiroki; APAER Pataer; CHEN Qiyu; MITSUMURA Naoki; ENDO Takumi; SEKIGUCHI Kazuhiko
  日本エネルギー学会大会講演要旨集, Volume：22, Number：22, First page：278, Last page：279, 29 Jul. 2013
  Recently the large amounts of waste fine coals are produced, which are difficult to be treated because of the high ash contents and inorganic sulfuric compounds. In order to make efficient use of waste fine coal, the retrieval technique is necessary for recovery of combustible contents from fine waste coals. Nowadays oil agglomeration process can deal with these problems. In this study, we investigated the mechanism of solution interface reaction on oil agglomeration in order to separate pyrite sulfur effectively from waste fine coal. During the high basic condition, pyrite sulfur reduction indicated high values since the pyrite surface became hydrophilic due to covering surface of pyrite sulfur by ferric hydroxide. As the results, we can remove pyrite under high basic condition, however decrease of coal cleaning efficiency occurred at this condition.
  The Japan Institute of Energy, Japanese
  DOI：https://doi.org/10.20550/jietaikaiyoushi.22.0_278
  DOI ID：10.20550/jietaikaiyoushi.22.0_278, CiNii Articles ID：110009799387, CiNii Books ID：AA12292973
• Morphological change of Cryptomeria japonica pollen and its allergenic species in urban atmosphere　　　　　　　　　　　　　　　
  仲村 慎一; 王 青躍
  空気清浄, Volume：50, Number：5, First page：48, Last page：48, 31 Jan. 2013
  Japanese
  ISSN：0023-5032, CiNii Articles ID：10031144533, CiNii Books ID：AN00065670
• No.5 Influences of pH variations on coal cleaning and desulfurization efficiency during oil agglomeration processes　　　　　　　　　　　　　　　
  WANG Qingyue; NIIDA Hiroki; APAER Pataer; CHEN Qiyu; MITSUMURA Naoki; SEKIGUCHI Kazuhiko
  石炭科学会議発表論文集, Volume：49, Number：49, First page：10, Last page：11, 15 Oct. 2012
  Nowadays, the oil agglomeration processes have been developed for reducing and making beneficial use of waste fine coal from the mechanic coal mining and coal cleaning. In this study, we recovered the carbonaceous contents from waste fine coal based on an oil agglomeration process using vegetable oil. At same time, we improved reduction ratio of pyrite sulfur which is usually difficult to be separated during the oil agglomeration process. In this study, we adjusted pH of the solution of oil agglomeration from neutrality to basic, in order to separate pyrite sulfur effectively from waste fine coal under the basic condition. During the high basic condition, pyrite sulfur reduction indicated high values since the pyrite surface became hydrophilic. As the results, the pyrite contents will not be recovered together with hydrophobic carbonaceous contents. However, coal cleaning efficiency, especially combustible matter recovery decreased under high basic solution.
  一般社団法人日本エネルギー学会, Japanese
  DOI：https://doi.org/10.20550/jiesekitanronbun.49.0_10
  DOI ID：10.20550/jiesekitanronbun.49.0_10, CiNii Articles ID：110009560491, CiNii Books ID：AA12293003
• No.53 Combustion characteristics and behavior of the combustion gases of woody biomass char　　　　　　　　　　　　　　　
  Apaer PATAER; WANG Qingyue; CHEN Qiyu; NIIDA Hiroki
  石炭科学会議発表論文集, Volume：49, Number：49, First page：102, Last page：103, 15 Oct. 2012
  From the viewpoint of effective utilization of carbon resources in waste materials, carbonizing technology process system has been implemented. In this study, we investigated carbonization of waste woody biomass and its char used as solid fuel. The waste woody biomass was loading to alkali metal as NaOH, using the thermogravimetry with a differential thermal analyzer (TG-DTA), while combustion experiment was carried out on char by the model combustor. On the other hand, combustion exhaust gases of char also evaluated. As a result, the Na loading has improved the combustion properties of char. However, we need to examine for incomplete combustion due to the ash increment.
  The Japan Institute of Energy, Japanese
  DOI：https://doi.org/10.20550/jiesekitanronbun.49.0_102
  DOI ID：10.20550/jiesekitanronbun.49.0_102, CiNii Articles ID：110009560537, CiNii Books ID：AA12293003
• P-88 Variation of chemical components in PM2.5 and PM0.1 with distance from the roadside(Poster session)　　　　　　　　　　　　　　　
  SEKIGUCHI Kazuhiko; KINOSHITA Masatoshi; KIM Kyung Hwan; KUDO Shinji; WANG Qingyue
  大気環境学会年会講演要旨集, Number：53, First page：318, Last page：318, 29 Aug. 2012
  Japan Society for Atmospheric Environment, Japanese
  CiNii Articles ID：110009589111, CiNii Books ID：AN10549786
• 3F1439 Performance evaluation of an inertial filter sampler under collection of atmospheric ultrafine particles(5 Substance-2 particulate matter,General Presentations)　　　　　　　　　　　　　　　
  SEKIGUCHI Kazuhiko; SAKURAI Kenji; WANG Qingyue
  大気環境学会年会講演要旨集, Number：53, First page：525, Last page：525, 29 Aug. 2012
  Japan Society for Atmospheric Environment, Japanese
  CiNii Articles ID：110009589315, CiNii Books ID：AN10549786
• 1-1-1 Influential factors on oil agglomeration process for coal recovery from different grade coals　　　　　　　　　　　　　　　
  WANG Qingyue; NIIDA Hiroki; APAER Pataer; CHEN Qiyu; MITSUMURA Naoki; SEKIGUCHI Kazuhiko
  日本エネルギー学会大会講演要旨集, Volume：21, Number：21, First page：2, Last page：3, 30 Jul. 2012
  Nowadays, the oil agglomeration process has developed for reducing and making beneficial use of waste fine coal from the coal mechanic extraction and coal cleaning. In this study, we investigated coal cleaning efficiency based on oil agglomeration with three different grade coals. In order to investigate the precise effects of coal grade, ash contents in coal samples were removed by HC1 and HF acid digestion treatment procedure. Then, on oil agglomeration, we investigated recovery of coal and ratio of oil adhesion to coal. Moreover, from analysis of TG-DTA or DTG, combustive characteristics of each aggregate were searched. As the results, better coal recovery from the low grade coal can be easy to be achieved by oil agglomeration due to interaction of aliphatic low molecular weight compounds with oil aggregating agent. On the other hand, combustive characteristics of the high grade coal were improved, especially the activated energy descended.
  一般社団法人日本エネルギー学会, Japanese
  DOI：https://doi.org/10.20550/jietaikaiyoushi.21.0_2
  DOI ID：10.20550/jietaikaiyoushi.21.0_2, CiNii Articles ID：110009560669, CiNii Books ID：AA12292973
• Pb-217 Gasification of waste coal- biomass briquette by addition of catalytic metal components　　　　　　　　　　　　　　　
  WANG Qingyue; WANG Yimin; MAEZONO Takuya; SEKIGUCHI Kazuhiko
  バイオマス科学会議発表論文集, Volume：7, Number：7, First page：160, Last page：161, 18 Jan. 2012
  A study on CO_2 and steam gasification reactivity of Chinese waste coal-biomass briquette char (BB-char) has been approached out by addition of five catalytic metal components (K, Na, Ca, Mg and Fe) in the BB-char preparation. As the results, K, Na and Ca had higher catalytic effect than other metals, and Mg had the lowest catalytic effect within five metals. It is suggested that Chinese waste coal can be effectively converted into useful gas fuels if we choose the suitable biomass containing better catalytic metals during the BB preparation.
  一般社団法人日本エネルギー学会, Japanese
  DOI：https://doi.org/10.20550/jiebiomassronbun.7.0_160
  DOI ID：10.20550/jiebiomassronbun.7.0_160, CiNii Articles ID：110009438934, CiNii Books ID：AA12292984
• Burst Phenomena of Japanese Cedar Pollen and Elution Mechanism of Its Allergen during Precipitation Event after Transportation of Asian Dust　　　　　　　　　　　　　　　
  NAKAMURA Shinichi; WANG Qingyue; GONG Xiumin; MORITA Jun; SUZUKI Miho; NAKAJIMA Takuya; NAKAJIMA Daisuke; SEKIGUCHI Kazuhiko; LU Senlin; MIWA Makoto
  Earozoru Kenkyu, Volume：27, Number：2, First page：182, Last page：188, 2012
  We previously reported that the airborne fine allergenic particles of Japanese cedar pollen were high in concentration during sunny days after rainfall. In this study, we investigated the morphological change of Japanese cedar pollen grains due to the contact with raindrops, and the elution behavior of major pollen allergenic Cry j 1, based on the assumption that rainfall may promote the release of fine allergenic particles from airborne pollen grains.  The observation of raindrops showed that a great number of pollens were scavenged at the initial stage of precipitation and that many burst pollen grains were contained in the rainwater. Therefore, it was suspected that the fine allergenic particles included in fragment of cell wall and ingredients of pollen were released from the burst of pollen grains.  On the other hand, the elution of allergenic Cry j 1 was found to increase when the solution contained high concentrations of ionic species. Especially, elution of allergenic Cry j 1 was significantly increased when the pollens were soaked with a weak basic solution containing Ca2+ ion. It was also found that high ionic concentration and high pH values appeared in rainfall water during the rainfall after long range transportation events of Asian dust. Therefore, we think that one of the important factors for releasing fine allergenic particles is the contact with the rainfall which scavenged Asian dust experienced a long range transportation.
  Japan Association of Aerosol Science and Technology, Japanese
  DOI：https://doi.org/10.11203/jar.27.182
  DOI ID：10.11203/jar.27.182, ISSN：0912-2834, CiNii Articles ID：130003367518, CiNii Books ID：AN10041511
• No.12 Pyrolysis of alkali metal loaded biomass and combustion characteristics of carbide　　　　　　　　　　　　　　　
  PATAER Apaer; WANG Qingyue; CHEN Qiyu; MAEZONO Takuya; NIDA Hiroki
  石炭科学会議発表論文集, Volume：48, Number：48, First page：24, Last page：25, 27 Oct. 2011
  From the viewpoint of global warming and recovery resources and energy from organic wastes, the carbonizing process is paid the attention to intermediate their processing of the organic solid wastes. This study is focused on carbonization of woody waste and carbide using to solid fuel utilization. Therefore, woody waste biomass was loading to alkali metal such as NaOH, using the thermogravimetry with a differential thermal analyzer (TG-DTA), the reactivity assessment on carbide was carried out based on the combustion experiments. The results show combustion characteristic of char increased by NaOH load valve, however when Na^+ loaded more than 2%, it seemed to be loss in its reactivity of char.
  一般社団法人日本エネルギー学会, Japanese
  DOI：https://doi.org/10.20550/jiesekitanronbun.48.0_24
  DOI ID：10.20550/jiesekitanronbun.48.0_24, CiNii Articles ID：110008902689, CiNii Books ID：AA12293003
• No.28 Influence assessment on cleaning coal efficiency of oil agglomeration varied with oxygen content in coal　　　　　　　　　　　　　　　
  WANG Qingyue; NIDA Hiroki; APAER Pataer; CHEN Qiyu; MAEZONO Takuya; SEKIGUCHI Kazuhiko
  石炭科学会議発表論文集, Volume：48, Number：48, First page：56, Last page：57, 27 Oct. 2011
  Present, the oil agglomeration has attracted attention in the way of making efficient use of waste fine coal from the coal cleaning. In this study, we analyzed efficiency of coal cleaning based on oil agglomeration with three coals varied oxygen contents and as the aggregating agents, kerosene and vegetable oil were used. In order to investigate the precise effect of coals themself and polar functional groups, the ash contents in sample coals were digested by HCl and HF solutions. As the results, in cases where we changed the combination of coals and oils, the recoveries of coals were changeable.
  一般社団法人日本エネルギー学会, Japanese
  DOI：https://doi.org/10.20550/jiesekitanronbun.48.0_56
  DOI ID：10.20550/jiesekitanronbun.48.0_56, CiNii Articles ID：110008902705, CiNii Books ID：AA12293003
• Effect of Simultaneous Application of Coal-biomass Briquette Combustion Ash and Animal Compost on Plants Growth in Acidic Soil Area　　　　　　　　　　　　　　　
  HANAZAWA Atsushi; KAWANO Tomona; MIWA Makoto; WANG Qingyue; SAKAMOTO Kazuhiko
  Journal of Japan Society for Atmospheric Environment, Volume：46, Number：3, First page：148, Last page：155, 10 May 2011
  大気環境学会, Japanese
  DOI ID：10.11298/taiki.46.148, ISSN：1341-4178, CiNii Articles ID：10028108112, CiNii Books ID：AN10512108
• O-18 Evaluation emission behavior of suspended particulate matter from rice husk combustion by air vortex current　　　　　　　　　　　　　　　
  WANG Qingyue; MAEZONO Takuya; APARU Pataru; CHEN Qiyu; WANG Yimin; DOMON Masayuki; FUJIWARA Ippei; YAMAGUCHI Norio
  バイオマス科学会議発表論文集, Volume：6, Number：6, First page：36, Last page：37, 12 Jan. 2011
  In this study, we investigated if fossil fuel can be substituted by rice husk on a new combustor in the air vortex current. Because, suspended particulate matter in exhaust gases not only influence the global environment when released in the atmosphere but also influence on human health. Harmful substances emits from the rice husk combustion were evaluated by measuring the suspended particulate matter composition on the exhaust, and the reduction possibility of these harmful substances by controlling the combustion conditions was examined. Experimental show that the particulate concentrations can be reduced substantially by highly effective combustion with an improved combustor compared with a previous combustor.
  一般社団法人日本エネルギー学会, Japanese
  DOI：https://doi.org/10.20550/jiebiomassronbun.6.0_36
  DOI ID：10.20550/jiebiomassronbun.6.0_36, CiNii Articles ID：110008463420, CiNii Books ID：AA12292984
• P-54 Effect of particle sizes of mixing biomass and coal on gasification of waste coal-biomass briquette　　　　　　　　　　　　　　　
  WANG Qingyue; WANG Yimin; TOHTI Talip
  バイオマス科学会議発表論文集, Volume：6, Number：6, First page：160, Last page：161, 12 Jan. 2011
  In this study, to shorten the gasification time of waste coal-biomass briquette, different sizes of mixing biomass and different sizes of mixing coal in making waste coal-biomass briquette were used. The gasification experiments were conducted with the char of waste coal-biomass briquettes under the conditions that experimental temperature was 900℃, and used 300 ml/min of water steam in Ar gas after the pyrolysis experiments. As the results, the gasification reaction time of waste coal-biomass briquette was shorter. It was assumed that alkali metals and alkali earth metals in worked as the gasification catalysts were dispersed accompanied by the increment of specific surface areas.
  一般社団法人日本エネルギー学会, Japanese
  DOI：https://doi.org/10.20550/jiebiomassronbun.6.0_160
  DOI ID：10.20550/jiebiomassronbun.6.0_160, CiNii Articles ID：110008463481, CiNii Books ID：AA12292984
• P-55 Pyrolysis of alkali metal loaded biomass and activity evaluation of carbide　　　　　　　　　　　　　　　
  Apaer Pataer; Wang qingyue; Chen qiyu; Kurogawa Hideki; Sugiyama Kazuo
  バイオマス科学会議発表論文集, Volume：6, Number：6, First page：162, Last page：163, 12 Jan. 2011
  The large amount of organic industrial waste was discharged by industrial activities, which is necessary to stabilize the detoxification, because is a problem of environmental pollution and landfill. Woody waste biomass in the organic industrial waste was discharged over a large area, and due to low energy density of the shortcomings, difficult to use as resources has been most often incineration as an intermediate treatment. This study is about carbonization of wood waste and carbide using to solid and gases fuel utilization. Therefore, woody waste biomass was loading to alkali metal as NaOH, using the thermogravimetry with a differential thermal analyzer (TG-DTA) ,thermal decomposition behavior and effect of alkali metal additive amount was investigated. Furthermore, reactivity assessment was carried out on carbide by CO_2 gasification.
  一般社団法人日本エネルギー学会, Japanese
  DOI：https://doi.org/10.20550/jiebiomassronbun.6.0_162
  DOI ID：10.20550/jiebiomassronbun.6.0_162, CiNii Articles ID：110008463482, CiNii Books ID：AA12292984
• Preliminary monitoring for exhaust gases from a hybrid air vortex current combustor using waste rice husk and fossil composite fuel
  王 青躍; 前薗 拓矢; アパル パタル; 陳 啓宇; オウ イビン; 藤原 逸平; 土門 正幸; 山口 哲央
  Volume：3, First page：39, Last page：44, 2011
  In this study, we investigated if fossil fuel can be substituted by rice husk on a new combustor in the air vortex current. Because, suspended particulate matter in exhaust gases not only influence the global environment when released in the atmosphere but also influence on human health. Harmful substances emits from the rice husk combustion were evaluated by measuring the suspended particulate matter composition on the exhaust, and the reduction possibility of these harmful substances by controlling the combustion conditions was examined. Experimental show that the particulate concentrations can be reduced substantially by highly effective combustion with an improved combustor compared with an original combustor.
  Japanese
  CiNii Articles ID：120003111438
• Basic Study on Chemical Modification of Japanese Cedar Pollen Allergen (Cry j 1) by Air Pollutants and Apoptosis Inducibility of 3-Nitrotyrosine for Hela Cell　　　　　　　　　　　　　　　
  MORITA Jun; WANG Qingyue; GONG Xiumin; NAKAMURA Shinichi; SUZUKI Miho; NAKAJIMA Takuya; SEKIGUCHI Kazuhiko; NAKAJIMA Daisuke; MIWA Makoto
  Earozoru Kenkyu, Volume：27, Number：1, First page：71, Last page：77, 2011
  Recently, prevalence of Japanese cedar pollinosis has been increasing, and it is observed highly in the Kanto area of Japan. As a cause of the high prevalence in Kanto area, we focused attention on 3-nitrotyrosines contained in allergen protein that cause the immune reactions and enhance an immunogenicity of allergen proteins. In this study, we measured the size distribution of airborne Cry j 1 concentrations and the relative quantities of airborne Cry j 1 containing 3-nitrotyrosine; and evaluated an apoptosis inducibility of 3-nitrotyrosine for HeLa cell. Cry j 1 were highly observed as fine particles (≦1.1 µm) in the urban atmosphere of Saitama city, Japan. We succeeded for the first time in detecting Cry j 1 containing 3-nitrotyrosine in the urban atmosphere as the probable evidence of chemical modification of Cry j 1 by air pollutants. Cry j 1 that exists in the particle sizes smaller than 7.0 µm contained higher probabilities of 3-nitrotyrosine residues compared with Cry j 1 in the particle sizes larger than 7.0 µm. Moreover, we clarified that 3-nitrotyrosine induces HeLa cell (epidermoid cell) apoptosis. From these results, it is suggested that further investigations are needed for the behavior and health effect of Cry j 1 and Cry j 1 containing 3-nitrotyrosine in respirable particles.
  Japan Association of Aerosol Science and Technology, Japanese
  DOI：https://doi.org/10.11203/jar.27.71
  DOI ID：10.11203/jar.27.71, ISSN：0912-2834, CiNii Articles ID：130002080948, CiNii Books ID：AN10041511
• Effect of Simultaneous Application of Coal-biomass Briquette Combustion Ash and Animal Compost on Plants Growth in Acidic Soil Area　　　　　　　　　　　　　　　
  Hanazawa Atsushi; Kawano Tomona; Miwa Makoto; Wang Qingyue; Sakamoto Kazuhiko
  Journal of Japan Society of Air Pollution, Volume：46, Number：3, First page：148, Last page：155, 2011
  The bio-briquette is a solid fuel which is produced from pulverized coal, biomass, and a sulfur fixation agent under high pressure without any binder. The ash generated from the bio-briquette combustion has been evaluated for use as an acid soil improvement agent. In this study, we tried to evaluate the effect of coaddition of the ash and manure compost on crop growth and element uptake by a laboratory-scale radish growth test. Radish plants cultivated during coaddition condition showed a sufficent growth without chemical fertilizer and no detrimental effect was recognized. The coaddition of the ash and manure compost contributed to fixation of potentially toxic elements derived from the ash or manure compost. The crop absorption of copper and zinc, which are considered as toxic heavy metals in the case of manure application, was decreased by the coaddition of the ash and manure compost, and the inhibition effect of Zn absorption by other than the soil pH reclamation was suggested. Our results suggested that the coaddition was a more effective method than the single application of the ash or manure compost for soil amelioration and crop production.
  Japan Society for Atmospheric Environment, Japanese
  DOI ID：10.11298/taiki.46.148, ISSN：1341-4178, CiNii Articles ID：130004554408, CiNii Books ID：AN10512108
• Evaluation and chemical characterization of rice husk and combustion by air vortex current　　　　　　　　　　　　　　　
  WANG Qingyue; MAEZONO Takuya; DOMON Masayuki; YAMAGUCHI Norio
  石炭科学会議発表論文集, Volume：47, Number：47, First page：22, Last page：23, 21 Sep. 2010
  In this study, we analyzed chemical composition of rice husk of agricultural waste and investigated its combustion characteristic, in which rice husk was used as fuel by a combustor with a fluid bed of air vortex current. As the results, rice husk discharged the volatile matter over 320 °C, and ignited at 400 °C. The chemical composition of rice husk seemed to be little different with the production area or its varietal, but there were no obvious effects on its combustion. Rice husk has enough calorific value when using a fluidized bed combustor.
  一般社団法人日本エネルギー学会, Japanese
  DOI：https://doi.org/10.20550/jiesekitanronbun.47.0_22
  DOI ID：10.20550/jiesekitanronbun.47.0_22, CiNii Articles ID：110008067338, CiNii Books ID：AA12293003
• 3-14-3 Characterization of liquefied product from waste wood with phenol in the presence of acidic catalysts　　　　　　　　　　　　　　　
  WANG Qingyue; CHEN Qiyu; APAER Patru; KASHIWAGI Nobuaki
  日本エネルギー学会大会講演要旨集, Volume：19, Number：19, First page：182, Last page：183, 02 Aug. 2010
  Waste softwood material, was selected and used in our wood liquefaction experiment. In order to investigate the basic characteristics and potentially harmful metal contents, the composition and metal elements of waste woody samples had been determined, and based on the methods of Japanese Industrial Standard (JIS) and by ICP-AES, separately. In the acidic catalyst comparison experimental, as the results, when using concentrated sulfuric acid as the strong acidic catalyst, According to these experimental results, the new liquefied simples demonstrated the relationships between some characteristics of liquefied products from waste woody materials through analyses of Japanese phenolic resin industry testing series such as viscosity, nonvolatility and so on. The results showed that whether the viscosity or novolatility the greatest changed of the liquefied materials had taken place in reaction time during the 6 hours. In addition, in order to find some structural changes and to clarify the mechanism of respective products, it was carried out the analysis by combined phenol and free phenol in our studies.
  一般社団法人日本エネルギー学会, Japanese
  DOI：https://doi.org/10.20550/jietaikaiyoushi.19.0_182
  DOI ID：10.20550/jietaikaiyoushi.19.0_182, CiNii Articles ID：110008100049, CiNii Books ID：AA12292973
• 7-1-2 Investigation of combustible matter recovery from waste coal by vegetable oil agglomeration　　　　　　　　　　　　　　　
  WANG Qingyue; KASHIWAGI Nobuaki; CHEN Qiyu
  日本エネルギー学会大会講演要旨集, Volume：19, Number：19, First page：326, Last page：327, 02 Aug. 2010
  Nowadays, coal production increases continuously due to increase in mechanization in coal mining and demand in its related fields of application worldwide. Especially, coal production in China is trend increasing and a large amount of waste fine coal is produced. In this study, a vegetable oil agglomeration was performed for coal recovery from Chongqing Nantong waste fine coals in China. The oil agglomeration process has been used to mineral oil of exhaustible resource. Therefore, in this study, vegetable oils which are renewable, available and nonpolluting energy resources. The effects of the parameters including chemical structure and viscosity of vegetable oils were investigated based on the combustible matter recovery, ash reduction and efficiency index. It was concluded that Furthermore, a wide range of oil alteration grades and therefore, of oil properties, such as structural changes and unsaturation degree in the oils have to be achieved.
  一般社団法人日本エネルギー学会, Japanese
  DOI：https://doi.org/10.20550/jietaikaiyoushi.19.0_326
  DOI ID：10.20550/jietaikaiyoushi.19.0_326, CiNii Articles ID：110008100121, CiNii Books ID：AA12292973
• The Environmental Policy Choice and the Pollution-Haven Hypothesis : Evidence from Regional Comparison in China　　　　　　　　　　　　　　　
  HUANG Zheng; TONOOKA Yutaka; SEKIGUCHI Kazuhiko; WANG Qingyue; SAKAMOTO Kazuhiko
  ENVIRONMENTAL SCIENCE, Volume：23, Number：2, First page：67, Last page：80, 31 Mar. 2010
  China's recent rapid economic growth has continued, and along with it environmental problems have become increasingly apparent. In this study, we analyzed the relationship between regional economic development and environmental problems using environmental Kuznets curves and Pollution-Haven hypothesis. China was divided into two areas and environmental Kuznets curves were drawn for each area. Regional economic developments, and the relation with the three types of environment loads, air pollution, water environment, solid waste problem, were analyzed by the coastal and inland areas in China. In terms of COD, the tendency to the improvement was found. In terms of SO<SUB>2</SUB> and solid waste, two regions showed the tendency of increasing with the economy growth. With the income elasticity effect, the composition of industry became cleaner in the coastal region than in the inland region. Our findings were that the imbalance of economic development between the coastal and inland areas has aggravated environmental problems, and the gap between economic development and environmental control has generally grown.
  環境科学会, Japanese
  DOI：https://doi.org/10.11353/sesj.23.67
  DOI ID：10.11353/sesj.23.67, ISSN：0915-0048, CiNii Articles ID：10026205647, CiNii Books ID：AN10165252
• Investigation of particle size of waste coal and agitation conditions on combustible matter recovery from waste coal by vegetable oil agglomeration　　　　　　　　　　　　　　　
  WANG Qingyue; KASHIWAGI Nobuaki; APARU Pataru; TARIPU Tofuthi; SUGIYAMA Kazuo
  石炭科学会議発表論文集, Volume：46, Number：46, First page：8, Last page：9, 26 Nov. 2009
  In this study, a vegetable oil agglomeration was performed for coal recovery form Chinese waste fine coal. The effects of the parameters including particle sizes, agitation time and agitation rate were investigated based on the combustible matter recovery, ash reduction and efficiency index. It was concluded that particle sizes of waste coal, agitation rate and agitation time will influence on the recovery efficiency of combustible matter from its original waste coal by colza oil agglomeration.
  一般社団法人日本エネルギー学会, Japanese
  DOI：https://doi.org/10.20550/jiesekitanronbun.46.0_8
  DOI ID：10.20550/jiesekitanronbun.46.0_8, CiNii Articles ID：110007520634, CiNii Books ID：AA12293003
• Impact of various carbonization products of pyrolysis processing temperature conditions of woody biomass waste　　　　　　　　　　　　　　　
  Wang qingyue; Apaer Pataer; Talipu Tohuti; Kashiwagi Shinmei; Sakamoto Sazuhiko; Kurogawa Hideki; Sugiyama Kazuo
  石炭科学会議発表論文集, Volume：46, Number：46, First page：118, Last page：119, 26 Nov. 2009
  From the viewpoint of global warming and recovery resources and energy from organic wastes, the carbonizing process is paid the attention to intermediate processing of the organic solid wastes. This study is focused on carbonization of industrial organic solid waste such as thinned woody waste vary with combustible gases utilized as recovery energy. The proper conditions such as different carbonizing temperature rates were investigated for the possibility of solid fuel. Therefore, pyrolyzing products such as generated gases, tar and char were measured using the thermogravimetry with a differential thermal analyzer (TG-DTA) and a batch-wise fixed-bed reactor with the GC-TCD & GC-FID analyzers.
  一般社団法人日本エネルギー学会, Japanese
  DOI：https://doi.org/10.20550/jiesekitanronbun.46.0_118
  DOI ID：10.20550/jiesekitanronbun.46.0_118, CiNii Articles ID：110007520689, CiNii Books ID：AA12293003
• Olympic Cities and Environmental Kuznets Curves : Air pollution trends and control strategies in Beijing　　　　　　　　　　　　　　　
  HUANG Zheng; TONOOKA Yutaka; WANG Qingyue; SAKAMOTO Kazuhiko
  ENVIRONMENTAL SCIENCE, Volume：22, Number：5, First page：348, Last page：361, 30 Sep. 2009
  City air pollution is both an old and new problem. Many cities in developed countries experienced severe air pollution caused by pollutants such as sulfur dioxide released at the beginning of their economic development. Although the discharge of such pollutants has fallen conspicuously in recent years, increased density of city traffic has created a new problem with an increase in pollutants such as nitrogen oxides released by cars. The various atmospheric environmental problems faced so far by developed nations are also beginning to occur in developing countries as they undergo rapid urbanization. What kinds of antipollution lessons should a developing country learn from the antipollution history of developed countries in order to improve the atmospheric environment of its cities while continuing to grow economically? In this study, we used environmental Kuznets curves to analyze sulfur dioxide and nitrogen dioxide air pollution in Beijing, where the Olympics will be held in 2008, and compared strategies and air pollution countermeasures of Beijing with those of other cities in developed countries that have hosted the Olympics. With sulfur dioxide, a change in the environmental Kuznets curve was observed for each city. With nitrogen dioxide, such a tendency was not seen in developed countries because of the delay in deploying countermeasures. On the other hand, a reduction was seen in developing cities because measures against nitrogen dioxide were taken on at an early stage. Confirmation of the environmental Kuznets curves hypothesis is not available for the observed NO<SUB>2</SUB>-trend, but the analysis based on the premise suggests that learning from the experiences of developed countries can lead to the improvement of the atmospheric environment of developing countries in a way that is compatible with economic development.
  環境科学会, Japanese
  DOI：https://doi.org/10.11353/sesj.22.348
  DOI ID：10.11353/sesj.22.348, ISSN：0915-0048, CiNii Articles ID：10025309353
• P-03 Characterization of carbonaceous and ionic contents in suspended particulate matters of urban atmosphere(Poster session)　　　　　　　　　　　　　　　
  HU Shunyao; SONG Yo; WANG Qingyue; SAKAMOTO Kazuhiko; SEKIGUCHI Kazuhiko
  大気環境学会年会講演要旨集, Number：50, First page：295, Last page：295, 20 Aug. 2009
  社団法人大気環境学会, Japanese
  CiNii Articles ID：110007483868, CiNii Books ID：AN10549786
• Evaluation of hybrid combustor of biomass and oil by vortex current of air　　　　　　　　　　　　　　　
  王 青躍; Aparu Pataru; 仲村 慎一; 前薗 拓矢; 藤原 逸平; 土門 正幸
  Report of Comprehensive Open Innovation Center, Saitama University, Number：2, First page：108, Last page：110, 2009
  In order to carry out heat use of the agricultural abandonment biomasses, such as chaff, simple, it inquired for the purpose of development of a compact metal burner at the low cost which can perform automatic operation. The equipment which combustion as assumed at the beginning can be realized as a result of some improvement, and combustion of oil and chaff can be performed.As the biomass such as chaff could be supplied in the direction of a tangent of the end of combustion of a cylinder furnace form was made to generate the primary revolution style of air, and it formed so that this revolution style might be reversed at other ends and might be discharged from an exhaust port. Equipment adopted the system which considers as a length type, prepares an oil burner in the upper part, goes up, supplying the biomass and burning from the lower part, and is discharged below with a reversal revolution style.Although it became clear that the target it not only can completely reduce smoke, but set up at thebeginning was mostly satisfied at the time of the start of chaff combustion and fire extinguishing as a result ofinvestigating the fundamental characteristic, an improvement of the further combustion conditions is alsoneeded.
  埼玉大学総合研究機構地域オープンイノベーションセンター, Japanese
  ISSN：1883-8278, CiNii Articles ID：120002354137, CiNii Books ID：AA12486867
• 木質系廃棄バイオマスにおける高速内熱式炭化処理プロセスに関する基礎研究　　　　　　　　　　　　　　　
  王 青躍; パタル アパル; トオフテイ タリプ
  Volume：19, First page：524, Last page：526, 19 Nov. 2008
  Japanese
  DOI ID：10.14912/jswmepac.19.0.174.0, CiNii Articles ID：40016368760, CiNii Books ID：AA1146177X
• Sulfur-fixation effect by coal-biomass briquettes under simulated combustion conditions of household stoves　　　　　　　　　　　　　　　
  Yamada Kimiko; Wang Qingyue; Sakamoto Kazuhiko
  Journal of Japan Society for Atmospheric Environment, Volume：43, Number：5, First page：264, Last page：272, 01 Sep. 2008
  Combustion experiments of four types of coal-biomass briquettes in laboratory were conducted to examine sulfur-fixation ratios under simulated combustion conditions of Chinese household stoves. We evaluated the factor such as combustion temperature that affected sulfur-fixation ratios. Sulfur-fixation ratios for coal-biomass briquettes (Ca/S=2) ranged from 88% to 96% under 800℃ that was assumed in previous laboratory experiments. On the contrary,those ranged from 33% to 71% under 1000℃ that was observed in Chinese household stoves, which decreased from 26% to 63% for each coal-biomass briquette in comparison with those under 800℃. The decrease of sulfur-fixation ratios resulted from sulfur-emission during combustion of coal biomass briquette char and transformation of calcium compounds in combustion ashes of coal-biomass briquettes, owing to thermal decomposition of fixed sulfur (CaSO_4) in char combustion over 850℃. Additionally, sulfur-fixation ratios under 1000℃ depended on types of coals, which were different in heating value, ash contents, and metal components. The laboratory combustion results indicated the necessity and importance of selection of coal types as raw material for coal-biomass briquettes according to application in terms of reduction of sulfur-emission.
  公益社団法人大気環境学会, Japanese
  DOI ID：10.11298/taiki1995.43.264, ISSN：1341-4178, CiNii Articles ID：110006881166, CiNii Books ID：AN10512108
• P-71 Characterization of ionic and carbonaceous particulate matters in roadside of urban area during FY2008 pollination season(Poster (Academic Promenade))　　　　　　　　　　　　　　　
  WANG Qingyue; Hu Yuyao; KURIHARA Kota; LONG Gongxiumi; NAKAMURA Shinichi; SEKIGUCHI Kazuhiko; NAKAJIMA Daisuke
  大気環境学会年会講演要旨集, Number：49, First page：459, Last page：459, 29 Aug. 2008
  Japan Society for Atmospheric Environment, Japanese
  CiNii Articles ID：110007075920, CiNii Books ID：AN10549786
• P-70 Behavior of airborne allergen particulate matters of Japanese cedar pollen during FY2008 pollination season(Poster (Academic Promenade))　　　　　　　　　　　　　　　
  WANG Qingyue; LONG Gong xiumi; KURIHARA Kota; Hu Yuyao; NAKAMURA Shinichi; SAKAMOTO Kazuhiko; MIWA Makoto
  大気環境学会年会講演要旨集, Number：49, First page：458, Last page：458, 29 Aug. 2008
  社団法人大気環境学会, Japanese
  CiNii Articles ID：110007076056, CiNii Books ID：AN10549786
• Daily Variation Differences between Airborne Japanese Cedar Pollen and Its Respirable Allergen Particulate Matters during the Most Severe Pollination Seasons　　　　　　　　　　　　　　　
  WANG Qingyue; KURIHARA Kota; KIRYU Hiroki; SAKAMOTO Kazuhiko; MIWA Makoto; UCHIYAMA Iwao
  Earozoru Kenkyu, Volume：23, Number：2, First page：120, Last page：126, 20 Jun. 2008
  In this study, we focus on the investigation of the airborne behavior of respirable particulate matters containing Japanese cedar pollen allergen Cry j 1 exfoliated from the Ubisch bodies on the pollen surfaces and Cry j 2 comprised in the starch granules within the pollen. The airborne Japanese cedar pollens were counted, and at the same time, the Cry j 1 and Cry j 2 particles were collected and determined in different particle sizes at the urban site (Cooperative Research Center of Saitama University) during daily sampling periods of the most severe pollination season of FY 2005 in Saitama, Japan.<BR>Morphological observation of Ubisch bodies exfoliated from pollen and ruptured pollens was performed with a scanning electron microscope. Moreover, the existing evidences of visualized Cry j 1 and Cry j 2 allergen particles below 1.1μm were also sensitively found by an immunofluorescence technique with a fluorescence microscope. Simultaneously, the high concentrations of Cry j 1 and/or Cry j 2 were determined in the fine particle sizes below 1.1μm. It was suggested that airborne respirable particulate matters containing Cry j 1 and Cry j 2 play a key role in the increasing incidence of asthma in the lower respiratory tract. Furthermore, although the release mechanisms of Cry j 1 and a Cry j 2 particles may be differed, the daily variation delays in the peaks of Cry j 1 (or Cry j 2) concentrations compared to the peaks of airborne pollen counts were observed since the fine particles were suspended in the atmosphere over a longer period of time after released. It is important to observe and determine the size distribution of airborne Japanese cedar pollen allergen particles in the long-term sampling research continually, and to elucidate the allergen particle release mechanisms. In the future, we should investigate the chemical, physical and biomedical combination effects on Japanese cedar pollen allergens, and have to consider proposing a new forecast informational system of the Japanese cedar pollen and their allergen particle variations.
  日本エアロゾル学会, Japanese
  DOI：https://doi.org/10.11203/jar.23.120
  DOI ID：10.11203/jar.23.120, ISSN：0912-2834, CiNii Articles ID：10021919070, CiNii Books ID：AN10041511
• Air (pollen) sampling system for high places and allergen elution from rain in urban area
  王 青躍; 仲村 慎一; 龔 秀民; 篠田 壽和
  Volume：1, First page：120, Last page：123, 2008
  In this study, we have collected Japanese cedar pollen from the roadside of two urban residential zones and a high place (about 35 m) of Saitama City during the pollination period in 2009. For the purpose of analyzing the airborne cedar pollen vertical distribution, I observed it both at roadside and 35m high place during the cedar pollen airborne period. Then, Japanese cedar pollen allergen was increased at sunny days after rainfall in atmosphere. We thought that there are more few pollen counts of the high altitude than road edge, but, the experiment result is showed that the pollen count of the high altitude is different from road edge for two days, and more than roadside. High affected possibility is thought about by this experiment result. Therefore, it is supposed that crustal particles (Kosa) and rainfall may be increased eluted rate of allergen contents and lead to release and transit them to fine particles. Fine particles were more suspended than coarse particle (such as pollen). Therefore, It will be thought that we need the vertical distribution investigation not only pollen counts but also allergen concentrations according to the altitude in future.
  Japanese
  ISSN：1883-8278, CiNii Articles ID：120001491439
• Sulfur-fixation effect by coal-biomass briquettes under simulated combustion conditions of household stoves　　　　　　　　　　　　　　　
  Yamada Kimiko; Wang Qingyue; Sakamoto Kazuhiko
  Journal of Japan Society of Air Pollution, Volume：43, Number：5, First page：264, Last page：272, 2008
  Combustion experiments of four types of coal-biomass briquettes in laboratory were conducted to examine sulfur-fixation ratios under simulated combustion conditions of Chinese household stoves. We evaluated the factor such as combustion temperature that affected sulfur fixation ratios. Sulfur-fixafion ratios for coal-biomass briquettes (<I>Ca</I>/<I>S</I>=2) ranged from 88% to 96% under 800°C that was assumed in previous laboratory experiments. On the contrary, those ranged from 33% to 71% under 1000°C that was observed in Chinese household stoves, which decreased from 26% to 63% for each coal-biomass briquette in comparison with those under 800°C. The decrease of sulfur-fixation ratios resulted from sulfur-emission during combustion of coal-biomass briquette char and transformation of calcium compounds in combustion ashes of coal-biomass briquettes, owing to thermal decomposition of fixed sulfur (CaSO<SUB>4</SUB>) in char combustion over 850°C. Additionally, sulfur-fixation ratios under 1000°C depended on types of coals, which were different in heating value, ash contents, and metal components. The laboratory combustion results indicated the necessity and importance of selection of coal types as raw material for coal-biomass briquettes according to application in terms of reduction of sulfur-emission.
  Japan Society for Atmospheric Environment, Japanese
  DOI：https://doi.org/10.11298/taiki1995.43.264
  DOI ID：10.11298/taiki1995.43.264, ISSN：1341-4178, CiNii Articles ID：130004377541
• Basic study on highly-heating pyrolyzing process for woody wastes　　　　　　　　　　　　　　　
  Wang Qingyue; Ghappar Pattar; Talifujiang Touhudahong; Kurokawa Hideki; Nakajima Daisuke; Sugiyama Kazuo
  Proceedings of the Annual Conference of The Japan Society of Waste Management Experts, Volume：19, Number：0, First page：174, Last page：174, 2008
  本研究では、木質系廃棄物の炭化処理時に排出された可燃性有機物等を回収し、燃焼させて得た排気ガスや排熱を再利用することを想定して、CO2ガス雰囲気において、内熱式かつ高速連続炭化処理プロセスを構築する可能性について検討した。また異なるCO2とN2雰囲気ガスを利用する時、木質系廃棄物の熱分解挙動及び炭化物の収率を比較して調査した。同時に、炭化物の燃料利用を考慮して、CO2雰囲気での炭化処理より生成した炭化物の着火温度及び比表面積に与える影響についても調査した。
  Japan Society of Material Cycles and Waste Management, Japanese
  DOI ID：10.14912/jswmepac.19.0.174.0, CiNii Articles ID：130005034178, CiNii Books ID：AA1146177X
• Measurement of gaseous and particulate components in JATOP summer campaign　　　　　　　　　　　　　　　
  Oritz Ricardo; Bao Linfa
  Report of Comprehensive Open Innovation Center, Saitama University, Number：1, First page：103, Last page：105, 2008
  In order to understand the behavior of fine particles (FP; less than 2.5 μm) in the atmosphere, a better characterization and measurement of their components in equilibrium with their corresponding gaseous compounds are necessary. We focused on a little studied chemical composition of size-resolved suburban aerosol and its diurnal variation. From 28 July to 11 August 2008, we measured high-time resolved aerosol composition with an aerosol mass spectrometer (AMS) at Saitama city, a suburban area of Tokyo. Equilibrium of gaseous nitric acid with particulate nitrate was evaluated using an annular denuder and filter pack (AD-FP) system with a time resolution of 3 hours for the AD-FP. Sulfate and organics were the major components of non-refractory aerosols (NR-PM1), while nitrate and chloride concentrations were relatively low. Size distributions of sulfate, ammonium, and organics showed mainly unimodal characteristics, suggesting internally mixed aerosol.Nonetheless organics showed bimodal characteristics in the rush hours or stagnant condition. Sulfate and oxygenated organic aerosols (OOA) increased mainly in the daytime along with transportation of air masses from polluted areas, however, OOA increased mainly under stagnant conditions. These results showed an important effect with the polluted air mass transported from urban areas in addition to the local effect on suburban aerosols.
  埼玉大学総合研究機構地域オープンイノベーションセンター, Japanese
  ISSN：1883-8278, CiNii Articles ID：120001491435
• High-rate carbonizing process and gaseous analysis for urban organic solid wastes　　　　　　　　　　　　　　　
  王 青躍; Aparu Pataru; 野崎 友義
  Report of Comprehensive Open Innovation Center, Saitama University, Number：1, First page：117, Last page：119, 2008
  This study is focused on carbonization of urban organic solid wastes such as thinned wood waste, construction wood waste, chicken litter and cow litter generated combustible gases used for recovery energy, to investigate the proper conditions such as carbonization temperature under the differently high rates and the possibility of solid fuel utilization. Therefore, using the thermogravimetry with a differential thermal analyzer (TG-DTA), the detail experiments on the effects of the produced carbide (char) under CO2 or N2 atmosphere during different temperatures were performed at the different hearting rates (10℃min-1, 90℃min-1). It was found that these conditions may change the reactivity of produced carbide and their calorific values. The reactivity assessment such as ignition temperature, surface areas and calorific value of the carbide were also carried out together with the combustion experiments.
  埼玉大学総合研究機構地域オープンイノベーションセンター, Japanese
  ISSN：1883-8278, CiNii Articles ID：120001491438
• Investigation on secondary formation of fine particles related to autoexhaust　　　　　　　　　　　　　　　
  Oritz Ricardo; Bao Linfa
  Report of Comprehensive Open Innovation Center, Saitama University, Number：1, First page：83, Last page：90, 2008
  Atmospheric aerosols are important for their effects on global climate change and human health. Volatile organic compounds emitted from mobile and natural sources into the atmosphere change through photochemical reactions into lower vapor pressure compounds, these compounds condense and produce aerosol. In this study, formation of secondary organic aerosol from toluene (as anthropogenic VOC) and isoprene (as biogenic VOC) was investigated using a 2.1 m3 smog chamber. In order to elucidate the effect of relative humidity on generated aerosol growth, toluene and mixtures of it and isoprene were irradiated for 6 hours. These results for photochemical reaction suggest that the relative humidity affects on the composition and growth of secondary generated organic aerosols.
  埼玉大学総合研究機構地域オープンイノベーションセンター, Japanese
  ISSN：1883-8278, CiNii Articles ID：120001493947
• Investigation on emission factor of EC and OC from biomass combustion　　　　　　　　　　　　　　　
  坂本 和彦; 王 青躍; 大須賀 肇太; 薫 旭輝; 陳 岩; 王 偉
  Report of Comprehensive Open Innovation Center, Saitama University, Number：1, First page：91, Last page：95, 2008
  For the purpose of comprehensive evaluation of not only CO2 but all GHGs and aerosols and air pollutants through complicate chemical reaction and physical process in the global atmosphere, and co-benefit of air pollution controls, we would carry out emission factor analysis from cooking stoves in rural housing in China as a typical small combustion source, however by the budget constraint we promoted preparation of experimental laboratory work only in this first year of the project as shown the experimental design of BC emissions in the text. In the next year we would promote the emission factor experiment observation on Black carbon (BC : a kind of aerosols having green house effect) and observation of ambient levoglucosan concentration to analyze accurate influence of BC and policy effect.
  埼玉大学総合研究機構地域オープンイノベーションセンター, Japanese
  ISSN：1883-8278, CiNii Articles ID：120001493948
• Investigation on improvement of atmospheric environment and health effect: effect of biogenic hydrocarbons on aerosol formation from anthropogenic hydrocarbons　　　　　　　　　　　　　　　
  坂本 和彦; 王 青躍; 関口 和彦; 塩谷 健二
  Report of Comprehensive Open Innovation Center, Saitama University, Number：1, First page：96, Last page：102, 2008
  Atmospheric aerosols are important for their effects on global climate change and human health. Hydrocarbons emitted into the atmosphere change through photochemical reactions into compounds with lower vapor pressure, these compounds condense and produce aerosol. In this study, a 2.1 m3 smog chamber was used to investigate the formation of secondary organic aerosol from toluene and isoprene. In order to elucidate generated aerosol composition and effect of humidity on it, toluene and isoprene mixtures were irradiated for 6 hours. These results for photochemical reaction suggest that the relative humidity affects on the composition and growth of secondary generated organic aerosols.
  埼玉大学総合研究機構地域オープンイノベーションセンター, Japanese
  ISSN：1883-8278, CiNii Articles ID：120001493949
• 廃木材と鶏糞の炭化処理昇温速度およびその炭化物着火特性に関する研究　　　　　　　　　　　　　　　
  王 青躍; 飯島 敦史; 関口 和彦
  Volume：18, First page：558, Last page：560, 19 Nov. 2007
  Japanese
  DOI ID：10.14912/jswmepac.18.0.177.0, CiNii Articles ID：40015742149, CiNii Books ID：AA1146177X
• Airborne behavior of suspended particulate matters containing Japanese cedar pollen allergens in urban, roadside and mountain areas of Saitama, Japan　　　　　　　　　　　　　　　
  KURIHARA Kota; WANG Qingyue; KIRYU Hiroki; SAKAMOTO Kazuhiko; MIWA Makoto; UCHIYAMA Iwao
  Journal of Japan Society for Atmospheric Environment, Volume：42, Number：6, First page：362, Last page：368, 10 Nov. 2007
  The investigation of airborne behavior of the Japanese cedar pollen 1 allergen Cry j 1 exfoliated from the Ubisch bodies on the pollen surfaces was carried out at the urban, roadside and mountain areas during the pollination seasons of FY2005〜FY2006 in Saitama, Japan. The higher concentrations of Cry j 1 were determined in the particle size below 1.1μm in the urban and mountain area. Furthermore, Cry j 1 was higher in the particle size below 1.1μm in the roadside than those in the mountain area in the study of FY 2006. It was suggested that the deposited pollens are resuspended from the ground by heavy traffic, and change to fine airborne particles which were observed morphologically by a scanning electron microscope to confirm exfoliated Ubisch bodies of the pollens. Therefore, these pollen allergen particles appear to play a key role in the increasing incidence of asthma in the lower respiratory tract. In our opinions from this study, it is suggested that it is important to determine the size distribution of airborne Japanese cedar pollens and to investigate the chemical, physical and biomedical combination effects on their suspended allergen particulate matters in near future.
  公益社団法人大気環境学会, Japanese
  DOI ID：10.11298/taiki1995.42.6_362, ISSN：1341-4178, CiNii Articles ID：110006440426, CiNii Books ID：AN10512108
• 51 Effect of particle sizes of mixing biomass on gasification of waste coal-biomass briquette　　　　　　　　　　　　　　　
  SHUKUZAKI Naoto; WANG Qingyue; SAKAMOTO Kazuhiko; YAMADA Tetsuo
  石炭科学会議発表論文集, Volume：44, Number：44, First page：100, Last page：101, 11 Oct. 2007
  In this study, to shorten gasification reaction time of waste coal-biomass briquette, different sizes of mixing biomass in making waste coal-biomass briquette were used. After the pyrolysis, the gasification experiment was conducted with waste coal-biomass briquette char under the temperature of 900℃ and H_2O/Ar mixture gas. As a result, gasification reaction time of waste coal-biomass briquette char was shorter. It was assumed that ash contents in biomass worked as the gasification catalysts were dispersed, and also specific surface area was increased in the char.
  The Japan Institute of Energy, Japanese
  DOI：https://doi.org/10.20550/jiesekitanronbun.44.0_100
  DOI ID：10.20550/jiesekitanronbun.44.0_100, CiNii Articles ID：110006611156, CiNii Books ID：AA12293003
• 52 Steam Gasification of Coal Biomass Briquettes　　　　　　　　　　　　　　　
  TANABE Shinsuke; HASHIMOTO Harumi; YAMADA Tetsuo; SUZUKI Tsutomu; WANG Qingyue; MARUYAMA Toshihiko
  石炭科学会議発表論文集, Volume：44, Number：44, First page：102, Last page：103, 11 Oct. 2007
  Steam gasification of char and/or catalytic steam reforming of tarry material prepared from pyrolysis of coal biomass biohiquette(CBB) were investigated in a fixed bed flow reactor at 1,173K. The fluid catalytic cracking (FCC) and NiO added molecular sieve(NiO-MS) were effective catalysts for the steam reforming of CBB tar and most of the tar was able to gasify.
  The Japan Institute of Energy, Japanese
  DOI：https://doi.org/10.20550/jiesekitanronbun.44.0_102
  DOI ID：10.20550/jiesekitanronbun.44.0_102, CiNii Articles ID：110006611157, CiNii Books ID：AA12293003
• Atmospheric environment and urbanization problem in East Asia analyzed with the Environmental Kuznets Curves　　　　　　　　　　　　　　　
  HUANG Zheng; TONOOKA Yutaka; SAKAMOTO Kazuhiko; WANG QingYue
  エネルギーシステム・経済・環境コンファレンス講演論文集 = Proceedings of the ... Conference on Energy, Economy, and Environment, Volume：23, First page：147, Last page：150, 25 Jan. 2007
  Japanese
  CiNii Articles ID：10021971388, CiNii Books ID：AA11603896
• Effect of different mixing biomass particle sizes on gasification reactivity of waste coal-biomass briquette
  王 青躍; 宿崎 直登; 山田 哲夫
  Volume：41, First page：1, Last page：9, 2007
  Coal gasification technology that can converse coal to gas fuels is one method of the clean coal technologies. In our study, it was suggested that gasification can be applicable to the utilization of waste coals. As well, when waste coals are used gasification technology in combination with coal-biomass briquette (BB) technology, conversion time of waste coal to gas fuel is shorter. However, gas fuels changed from waste coal-biomass briquette have low calorific values, considering in energy, it is necessary that gasification reaction time of waste coal-biomass briquette should be shorter and more effective.In this study, to shorten gasification reaction time of waste coal-biomass briquette, mixing biomass sizes in making waste coal-biomass briquette was micrified. The gasification experiments were conducted with waste coal-biomass briquette under the conditions that experimental temperature was 900 ℃, and used 300 ml･min-1 of 45 % water steam in Ar gas, after the pyrolysis experiments. As a result, gasification reaction time of waste coal-biomass briquette was shorter. It was assumed that alkali metals and alkali earth metals (AAEM) in biomass worked as the gasification catalysts were dispersed and specific surface areas were increased.
  Japanese
  CiNii Articles ID：120005373732
• Study on heterogeneous reactions between tar and ash during coal gasification
  王 青躍; 井古田 亘佑
  Volume：41, First page：10, Last page：14, 2007
  In coal gasification, it is one of the problems to sub-generated tar. To solve this trouble, we focus attention on that major components of ash contain calcium oxide (CaO) that is known as catalyst can decompose tar, and thought whether the tar was able to be decreased by using the ash in gasification furnace. The purpose of this study is to demonstrate reactions between tar and ash during coal gasification, and to estimate effect of tar decrease by ash.In this study, toluene, CaO, and Carbide from phenol resin was selected as the model tar, model ash, and model carbon, respectively. Experiments were carried out by passing toluene to CaO in flow fixed-bed reactor under increasing temperature (25～900 ℃, 10 ℃/min), and under constant temperature (700 ℃ and 900 ℃) for 5 h. As a result, it is turn out that CaO is effective to decreasing toluene. The rate constant when toluene decompose with CaO is about 58 times as large as rate constant when toluene decompose without CaO at 700 ℃, is about 30 times at 900 ℃. Also, although model carbon didn't affect toluene conversion, when toluene decompose with CaO combined model carbon, benzene yield is decreased from it when toluene decompose with nothing.
  Japanese
  CiNii Articles ID：120005373733
• Study on utilization system of intermediates carbonized from urban organic wastes
  王 青躍; 野崎 友義; アパルパタル
  Volume：8, First page：72, Last page：73, 2007
  The utilization system of intermediates carbonized from urban organic solid wastes such as thinned wood waste, construction wood waste, chicken litter and cow litter was studied. Using the thermogravimetry with the differential thermal analysis, the effects of the produced carbides (char), under CO2 condition at different temperatures, and/or the different rates of temperature (10 and 90 ℃ min-1) in the system were performed. The activity assessment, ignition temperature, surface areas and calorific value of the carbides were also carried out together with the combustion experiments. It was found that these conditions may increase the processing efficincy of the wastes accompanied by the change in the activity of produced carbides and their calorific values.
  Japanese
  ISSN：1347-4758, CiNii Articles ID：120001371280
• Airborne behavior of suspended particulate matters containing Japanese cedar pollen allergens in urban, roadside and mountain areas of Saitama, Japan　　　　　　　　　　　　　　　
  KURIHARA Kota; WANG Qingyue; KIRYU Hiroki; SAKAMOTO Kazuhiko; MIWA Makoto; UCHIYAMA Iwao
  Journal of Japan Society of Air Pollution, Volume：42, Number：6, First page：362, Last page：368, 2007
  The investigation of airborne behavior of the Japanese cedar pollen 1 allergen Cry j 1 exfoliated from the Ubisch bodies on the pollen surfaces was carried out at the urban, roadside and mountain areas during the pollination seasons of FY 2005-FY 2006 in Saitama, Japan.<BR>The higher concentrations of Cry j 1 were determined in the particle size below 1.1 1.1 m in the urban and mountain area. Furthermore, Cry j 1 was higher in the particle size below 1.1μ m in the roadside than those in the mountain area in the study of FY 2006. It was suggested that the deposited pollens are resuspended from the ground by heavy traffic, and change to fine airborne particles which were observed morphologically by a scanning electron microscope to confirm exfoliated Ubisch bodies of the pollens. Therefore, these pollen allergen particles appear to play a key role in the increasing incidence of asthma in the lower respiratory tract. In our opinions from this study, it is suggested that it is important to determine the size distribution of airborne Japanese cedar pollens and to investigate the chemical, physical and biomedical combination effects on their suspended allergen particulate matters in near future.
  Japan Society for Atmospheric Environment, Japanese
  DOI ID：10.11298/taiki1995.42.6_362, ISSN：1341-4178, CiNii Articles ID：130004377518, CiNii Books ID：AN10512108
• 廃木材と鶏糞の炭化処理昇温速度およびその炭化物着火特性に関する研究　　　　　　　　　　　　　　　
  王 青躍; 飯島 敦史; 黒川 秀樹; 関口 和彦; 坂本 和彦; 中島 大介
  Volume：18, Number：0, First page：177, Last page：177, 2007
  本研究では、炭化処理における昇温速度が、廃棄物の減量化および安定化に及ぼす影響を調査し、減量化評価を熱重量測定によって行い、安定化評価を腐敗性炭素量の指標である易分解性炭素量の測定によって行った。さらに、炭化生成物の燃料利用を考慮し、その燃焼特性を調査するため、着火温度による評価も行った。廃木材、鶏糞の高速昇温（90℃/min）による炭化処理は、最終温度が同じであれば低速昇温（10℃/min）と同程度の減量化、安定化の効果が得られることが確認でき、処理速度の向上が図れることが示唆された。さらに炭化物の燃料利用に関しても、有機分の多い廃棄物の高速昇温による処理は、より燃焼反応性の高い炭化物が得られる点で有利であることが示唆された。
  Japanese
  DOI ID：10.14912/jswmepac.18.0.177.0, CiNii Articles ID：130004640243, CiNii Books ID：AA1146177X
• 9. Basic study on coal recovery from waste fine coal by a vegetable oil agglomeration process　　　　　　　　　　　　　　　
  SAITOU Hinata; WANQ Qingyue; KUWABARA Mio
  石炭科学会議発表論文集, Volume：43, Number：43, First page：19, Last page：20, 12 Oct. 2006
  In this study, a vegetable oil agglomeration process was performed for coal combustible matter recovery from Chinese waste fine coal as compared with the conventional mineral oil agglomeration. Consequently, the coal agglomerated product of high combustibility containing lower ash and lower inorganic sulfur contents was separated from its original waste fine coal. Moreover, it was found that the higher combustible matter recovery by the vegetable oil agglomeration using such as soybean oil and colza oil can be achieved comparing with the mineral oil agglomeration. The availability of the vegetable oil agglomeration as a coal cleaning process for the combustible matter recovery from its original waste fine coal was also suggested.
  一般社団法人日本エネルギー学会, Japanese
  DOI：https://doi.org/10.20550/jiesekitanronbun.43.0_19
  DOI ID：10.20550/jiesekitanronbun.43.0_19, CiNii Articles ID：110006857866, CiNii Books ID：AA12293003
• 38. Basic behavior of a tar compound in heterogeneous reaction between char or ash contents　　　　　　　　　　　　　　　
  IKODA Kosuke; WANG Qingyue
  石炭科学会議発表論文集, Volume：43, Number：43, First page：77, Last page：78, 12 Oct. 2006
  In this study, it was approached for investigation of the char and ash contents influencing on tar conversion in gasification for coal-biomass briquette (BB). The phenol resin charcoal was made as a model component for carbon in char, toluene was applied as a model compound of tar, and the metal oxide such as CaO was used as a model compound of the ash content. The char or ash samples were installed and loaded in the fixed bed stainless steel tube reactor, and then toluene was circulated. As the result, the behavior of the char and ash contents on tar conversion in the heterogeneous reaction was evaluated, and the decomposition products of the tar by the char and ash contents was investigated and analyzed.
  一般社団法人日本エネルギー学会, Japanese
  DOI：https://doi.org/10.20550/jiesekitanronbun.43.0_77
  DOI ID：10.20550/jiesekitanronbun.43.0_77, CiNii Articles ID：110006857895, CiNii Books ID：AA12293003
• 7-7. Effecting of additional ratios of biomass on gasification of waste coal-biomass briquettes　　　　　　　　　　　　　　　
  SHUKUZAKI Naoto; WANG Qingyue; SAKAMOTO Kazuhiko; YAMADA Tetsuo
  日本エネルギー学会大会講演要旨集, Number：15, First page：369, Last page：370, 03 Aug. 2006
  The Japan Institute of Energy, Japanese
  CiNii Articles ID：110006796423, CiNii Books ID：AA12292973
• Atmospheric environment and urbanization problem in China analyzed with the Environmental Kuznets Curves　　　　　　　　　　　　　　　
  HUANG Zheng; TONOOKA Yutaka; SAKAMOTO Kazuhiko; WANG QingYue; KONDO Yasuhiko
  エネルギーシステム・経済・環境コンファレンス講演論文集 = Proceedings of the ... Conference on Energy, Economy, and Environment, Volume：22, First page：55, Last page：58, 26 Jan. 2006
  Japanese
  CiNii Articles ID：10021969904, CiNii Books ID：AA11603896
• Quantification of free glycerin in biodiesel fuel by enzyme-UV method　　　　　　　　　　　　　　　
  Kurokawa Hideki; Miyakawa Souichirou; Minagawa Satomi; Sekiguchi Kazuhiko; Wang Qingyue; Sakamoto Kazuhiko; Miura Hiroshi
  Proc. JPI, Volume：2006, Number：0, First page：49, Last page：49, 2006
  新エネルギーとして普及が期待されているバイオディーゼル燃料は、脂肪酸トリグリセリドのメタノールによるトランスエステル化反応により製造されるため、不純物としてグリセリンを含んでいる。グリセリンはディーゼル車の燃料フィルタ等を目詰まりさせるため、その含有量は0.02wt%以下と定められているが、低濃度であるため簡便に分析するのは難しい。本発表では、食品中のグリセリンの分析に用いられている酵素-UV法を用いてバイオディーゼル燃料中のグリセリン定量について検討した結果を報告する。
  The Japan Petroleum Institute
  DOI：https://doi.org/10.11523/sekiyu.2006.0.49.0
  DOI ID：10.11523/sekiyu.2006.0.49.0, CiNii Articles ID：130005018093
• 6. Study on steam gasification of coal-biomass briquette using waste coal (3)　　　　　　　　　　　　　　　
  WANG Qingyue; SHUKUZAKI Naoto; KANADA Msayuki; SAKAMOTO Kazuhiko; YAMADA Tetsuo
  石炭科学会議発表論文集, Volume：42, Number：42, First page：15, Last page：16, 17 Nov. 2005
  In this study, coal-biomass briquettes (BB) made by mixing waste coal and larch bark with Ca(OH)_2 as a sulfur fixation agent were pyrolyzed until 1173K in the inert atmosphere, and the obtained char samples were gasified under a stable steam generation at 1173K. As the result, an increased tendency of BB gasification was found with increment of the additive biomass. At the same time, total calorific values of produced gases are highly increased with the comparison of those produced from gasification of its original waste coal.
  一般社団法人日本エネルギー学会, Japanese
  DOI：https://doi.org/10.20550/jiesekitanronbun.42.0_15
  DOI ID：10.20550/jiesekitanronbun.42.0_15, CiNii Articles ID：110006857803, CiNii Books ID：AA12293003
• Utilization of coal-biomass briquette combustion ash for soil improvement　　　　　　　　　　　　　　　
  ISOBE Yugo; WANG Qingyue; SAKAMOTO Kazuhiko
  環境科学会誌 = Environmental science, Volume：17, Number：6, First page：431, Last page：438, 30 Nov. 2004
  English
  DOI ID：10.11353/sesj1988.17.431, ISSN：0915-0048, CiNii Articles ID：10014184646, CiNii Books ID：AN10165252
• 54. Steam Gasification of Coal Bioburiquette : H_2S Evolution and its Removal　　　　　　　　　　　　　　　
  HORIKAWA T; YAMADA T; HASHIMOTO H; SUZUKI T; MARUYAMA T; IGUCHI M; WANG Q Y
  石炭科学会議発表論文集, Volume：41, Number：41, First page：113, Last page：114, 25 Nov. 2004
  H_2S evolution in the pyrolysis and the steam gasification process of a Nan Tong Chinese bituminous coal and its biobriquette was investigated. When Ca(OH)_2 as desulfurization agent was added, the H_2S evolution of biobriquette was effectively suppressed in the pyrolysis process. However, the H_2S evolution increased again in the gasification later stage. This is for following reaction (CaS+H_2O=CaO+H_2S). H_2S and CO_2 in the produced gas was effectively removed by a gyratory flow treatment using Ca(OH)_2 suspended liquid.
  The Japan Institute of Energy, Japanese
  DOI：https://doi.org/10.20550/jiesekitanronbun.41.0_113
  DOI ID：10.20550/jiesekitanronbun.41.0_113, CiNii Articles ID：110006857789, CiNii Books ID：AA12293003
• 55. Study on gasification of coal-biomass briquette using waste coal (2)　　　　　　　　　　　　　　　
  KANADA Masayuki; WANG Qingyue; SAKAMOTO Kazuhiko; YAMADA Tetsuo
  石炭科学会議発表論文集, Volume：41, Number：41, First page：115, Last page：116, 25 Nov. 2004
  A coal-biomass briquette (BB) made by mixing waste coal and larch bark with Ca(OH)_2 as a sulfur fixation agent was pyrolyzed (raising to 1173K) in the inert atmosphere, and gasified with stable steam at 1173K. As a result, it had been shown that BB (biomass 25wt.%) has highest reactivity during pyrolysis. At the same time, the tendency of BB gasification is increased with increment of the additive biomass.
  一般社団法人日本エネルギー学会, Japanese
  DOI：https://doi.org/10.20550/jiesekitanronbun.41.0_115
  DOI ID：10.20550/jiesekitanronbun.41.0_115, CiNii Articles ID：110006857790, CiNii Books ID：AA12293003
• バイオブリケット燃焼灰の再利用システムに関する評価研究　　　　　　　　　　　　　　　
  滝沢 泰治; 王 青躍; 大谷 海里
  Volume：15, First page：728, Last page：730, 17 Nov. 2004
  Japanese
  CiNii Articles ID：40006531521, CiNii Books ID：AA1146177X
• 1-12 Continuous Steam Gasification of Coal Biobriquette　　　　　　　　　　　　　　　
  HORIKAWA T; YAMADA T; HASHIMOTO H; SUZUKI T; MARUYAMA T; WANG Q.Y
  日本エネルギー学会大会講演要旨集, Volume：13, Number：13, First page：46, Last page：47, 29 Jul. 2004
  一般社団法人日本エネルギー学会, Japanese
  DOI：https://doi.org/10.20550/jietaikaiyoushi.13.0_46
  DOI ID：10.20550/jietaikaiyoushi.13.0_46, CiNii Articles ID：110006795907, CiNii Books ID：AA12292973
• 7-7. Study on gasification of coal-biomass briquette using waste coal　　　　　　　　　　　　　　　
  KANADA Masayuki; WANG Qingyue; SAKAMOTO Kazuhiko; YAMADA Tetsuo
  日本エネルギー学会大会講演要旨集, Volume：13, Number：13, First page：298, Last page：299, 29 Jul. 2004
  一般社団法人日本エネルギー学会, Japanese
  DOI：https://doi.org/10.20550/jietaikaiyoushi.13.0_298
  DOI ID：10.20550/jietaikaiyoushi.13.0_298, CiNii Articles ID：110006796033, CiNii Books ID：AA12292973
• 7-13. Actual Situation in Residential Consumption of Raw Coal in China　　　　　　　　　　　　　　　
  YAMADA Kimiko; SAKAMOTO Kazuhiko; WANG Qingyue; KONDO Yasuhiko; MU Hailin
  日本エネルギー学会大会講演要旨集, Volume：13, Number：13, First page：310, Last page：311, 29 Jul. 2004
  The Japan Institute of Energy, Japanese
  DOI：https://doi.org/10.20550/jietaikaiyoushi.13.0_310
  DOI ID：10.20550/jietaikaiyoushi.13.0_310, CiNii Articles ID：110006796039, CiNii Books ID：AA12292973
• バイオブリケット燃焼灰による酸性土壌の改善効果に関する研究　　　　　　　　　　　　　　　
  王 青躍; 磯部 友護; 花澤 淳
  Number：37, First page：47, Last page：54, Mar. 2004
  Japanese
  ISSN：0916-6394, CiNii Articles ID：40006332170, CiNii Books ID：AN00095740
• Steam gasification of coal-biomass briquettes (I)　　　　　　　　　　　　　　　
  Tetsuo Yamada; Masatomo Akano; Takanobu Horikawa; Harumi Hashimoto; Tsutomu Suzuki; Toshihiko Maruyama; Qing Yue Wang; Mitsushi Kamide
  Nihon Enerugi Gakkaishi/Journal of the Japan Institute of Energy, Volume：83, Number：11, First page：932, Last page：938, 2004
  A study was conducted to obtain basic knowledge of converting biobriquettes composed of low rank coals containing large amount of ash and sulfur and biomass like agricultural and forest waste into clean gaseous fuels. Three Chinese bituminous coals and three kinds of biomass were heat treated at 1173 K in nitrogen. Each biobriquette char obtained was subsequently gasified with steam at 1073-1273K and 0.12-0.68 MPa partial pressures of H2O to measure the reactivity. For comparison, steam gasification of the corresponding coal char was conducted under the same conditions.
  Japan Institute of Energy, Japanese
  DOI：https://doi.org/10.3775/jie.83.932
  DOI ID：10.3775/jie.83.932, ISSN：0916-8753, CiNii Articles ID：130004017479, SCOPUS ID：19644383348
• Utilization of coal-biomass briquette combustion ash for soil improvement　　　　　　　　　　　　　　　
  ISOBE Yugo; WANG Qingyue; SAKAMOTO Kazuhiko
  ENVIRONMENTAL SCIENCE, Volume：17, Number：6, First page：431, Last page：438, 2004
  Coal-biomass briquettes (BBs), which are composed of low-grade coal, biomass, and a sulfur fixation agent, emit less sulfur dioxide (SO<SUB>2</SUB>) during combustion than low-grade coal; thus, BBs are a good manufactured product for use as a domestic and light industrial fuel in rural areas subject to acid rain in China. Combustion ash of BBs (BB ash) is usable as an amelioration agent for acidic soil because it has high alkalinity. In this study, growth experiments were conducted to estimate the effects of the addition of BB ash to acidified soil on the growth of certain crop plants and on the amounts of metals in plant tissue samples. The dry weight and length of plants were increased by the addition of BB ash to the soil, suggesting that plant growth was promoted because BB ash both neutralized acidified soil and contained much calcium, a plant nutrient. In addition, the addition of the BB ash inhibited the leaching of some phytotoxic metals (aluminum and manganese) from the BB ash and acidified soil and also inhibited the adsorption of the metals by plants. These results suggest that BB ash is suitable as an amelioration agent for acidic agricultural soils.
  SOCIETY OF ENVIRONMENTAL SCIENCE, JAPAN
  DOI：https://doi.org/10.11353/sesj1988.17.431
  DOI ID：10.11353/sesj1988.17.431, ISSN：0915-0048, CiNii Articles ID：130004304115
• Utilization of coal-biomass briquette combustion ash for soil improvement　　　　　　　　　　　　　　　
  ISOBE Y
  Environmental science, Volume：17, Number：6, First page：431, Last page：438, 2004
  環境科学会, English
  DOI：https://doi.org/10.11353/sesj1988.17.431
  DOI ID：10.11353/sesj1988.17.431, ISSN：0915-0048, CiNii Articles ID：40006530822
• Steam gasification of coal-biomass briquettes (I)　　　　　　　　　　　　　　　
  Tetsuo Yamada; Masatomo Akano; Takanobu Horikawa; Harumi Hashimoto; Tsutomu Suzuki; Toshihiko Maruyama; Qing Yue Wang; Mitsushi Kamide
  Nihon Enerugi Gakkaishi/Journal of the Japan Institute of Energy, Volume：83, Number：11, First page：932, Last page：938, 2004
  A study was conducted to obtain basic knowledge of converting biobriquettes composed of low rank coals containing large amount of ash and sulfur and biomass like agricultural and forest waste into clean gaseous fuels. Three Chinese bituminous coals and three kinds of biomass were heat treated at 1173 K in nitrogen. Each biobriquette char obtained was subsequently gasified with steam at 1073-1273K and 0.12-0.68 MPa partial pressures of H2O to measure the reactivity. For comparison, steam gasification of the corresponding coal char was conducted under the same conditions.
  Japan Institute of Energy, Japanese
  DOI：https://doi.org/10.3775/jie.83.932
  DOI ID：10.3775/jie.83.932, ISSN：0916-8753, CiNii Articles ID：110004083712, SCOPUS ID：19644383348
• 8-19. Evaluation of incinerated ash of coal-biomass briquettes made with aquatic plants as a soil amendment and fertilizer　　　　　　　　　　　　　　　
  HANAZAWA Atsushi; ISOBE Yugo; WANG Qingyue; SAKAMOTO Kazuhiko
  日本エネルギー学会大会講演要旨集, Volume：12, Number：12, First page：394, Last page：395, 30 Jul. 2003
  一般社団法人日本エネルギー学会, Japanese
  DOI：https://doi.org/10.20550/jietaikaiyoushi.12.0_394
  DOI ID：10.20550/jietaikaiyoushi.12.0_394, CiNii Articles ID：110006795854, CiNii Books ID：AA12292973
• Fundamental study on recovery and utilization techniques for waste coal
  王 青躍; 金田 昌之; 秋林 鉄雄
  Volume：4, First page：134, Last page：135, 2003
  Large amounts of pulverized coal discarded during coal mining, cleaning and preparation processes for resource producing were inefficiently used until now. In addition, utilization of biomass that is a renewable energy is very important in terms of saving of the fossil fuel, reducing of environmental pollution, and controlling discharge of greenhouse gas (C02), In this study, it was effort to gasify waste coal and biomass to produce gas fuel. From these results, it was suggested that mixture of waste coal and biomass can be pyrolyzed efficiently compared with waste coal or biomass.
  Japanese
  ISSN：1347-4758, CiNii Articles ID：120001389792
• Study on effectual conditions for coal-biomass briquette technology
  王 青躍; 金田 昌之; 平岩 隆一
  Volume：4, First page：120, Last page：121, 2003
  In this study, coal-biomass briquette (BB) that is produced from the mixture of Chinese low grade raw coals, biomass and sulfur-fixation agent under high pressure, which can effectively reduce S02 and particulate matters. In this case, instead of the raw coal, we developed BB with utilization of waste coal, which typically discarded during coal mining, cleaning and preparation processes. This study suggested that BB produced from waste coal is available on their burning characteristics, which can lead to reduce production costs of BB. Furthermore, we will estimate the BB technology system economically.
  Japanese
  ISSN：1347-4758, CiNii Articles ID：120001389789
• Influence of nitric acid on the deposition of sulfur dioxide to yellow sand particles　　　　　　　　　　　　　　　
  Horita Yoichi; Takada Hisae; Sorimachi Atsuyuki; Sekiguchi Kazuhiko; Wang Qing yue; Ishihara Hidekazu; Nishikawa Masataka; Sakamoto Kazuhiko
  大気環境学会年会講演要旨集, Number：44, First page：465, Last page：465, 2003
  社団法人大気環境学会, Japanese
  CiNii Articles ID：110003723969, CiNii Books ID：AN10549786
• The Research on the Influence of Briquette to Population Health in Nanchuan county, China　　　　　　　　　　　　　　　
  Hirano Motoyasu; Uchiyama Iwao; Murayama Rumiko; Sakamoto Kazuhiko; Wang Qing yue; Mizoguchi Tsuguo; Zhou Yan rong
  大気環境学会年会講演要旨集, Number：44, First page：568, Last page：568, 2003
  社団法人大気環境学会, Japanese
  CiNii Articles ID：110003724072, CiNii Books ID：AN10549786
• Growth effects of radish by the coalbiomass briquette combustion ash addition to the acidifid soil　　　　　　　　　　　　　　　
  Isobe Yugo; Wang Qing yue; Sakamoto Kazuhiko
  大気環境学会年会講演要旨集, Number：44, First page：615, Last page：615, 2003
  社団法人大気環境学会, Japanese
  CiNii Articles ID：110003724119, CiNii Books ID：AN10549786
• Characterization of ambient suspended particulate matter related to mobile sources on the urban roadside　　　　　　　　　　　　　　　
  Wang Qing yue; Jiang Zhao Wu; Sekiguchi Kazuhiko; Terasima Kazuya; Sakamoto Kazuhiko
  大気環境学会年会講演要旨集, Number：44, First page：631, Last page：631, 2003
  Japan Society for Atmospheric Environment, Japanese
  CiNii Articles ID：110003724135, CiNii Books ID：AN10549786
• Study on technique transference and the method of prevalence and enlightenment for coal-biomass briquette　　　　　　　　　　　　　　　
  王 青躍; 畠山 史郎
  Report of Cooperative Research Center, Saitama University, Number：4, First page：115, Last page：119, 2003
  Coal-biomass briquette (BB) that can efficiently fix S02 from combustion of low grade raw coal and pulverized waste coal was developed. And it was effort to investigate, possibility of BB technology as a prevention measure of acid rain, based on combustion test, performance test and diffusion model concept intended for region of southwest, northeast, inland and northern city of China. From this possibility test, it was obvious that we can not only get revenue, but also reuse waste coal, and reduce particulate matter and S02 if we construct BB factory which can has annual total production amounts of more than 100,000 tons. And from economic estimation, it calculated product cost 130- 250 yuan (ca. equivalent of 1,750- 3,400 yen) per ton of BB which was comparable to commercial high grade coal. But variety and distribution of biomass depend on region characteristic, and transfer cost also is an impact factor. In future, we should considerate continuously technique transference and the method of prevalence and enlightenment, and it will be expected that Japan-ehina cooperative research that aims to realize the model concept, reap a rich harvest.
  埼玉大学地域共同研究センター, Japanese
  ISSN：1347-4758, CiNii Articles ID：120001389788, CiNii Books ID：AA11808968
• Modified research on separating performance of dry coal cleaning technology by using the static electricity　　　　　　　　　　　　　　　
  王 青躍; 畠山 史郎; 谷口 勝典
  Report of Cooperative Research Center, Saitama University, Number：4, First page：122, Last page：129, 2003
  In this study, development of the dry coal cleaning equipment was made. This coal cleaning technology can be possible to remove the inorganic sulfur and the ash contents from the raw coal without water. In order to improve the separating performance of coal cleaning equipment and obtain the data for designing of other new equipments, a measurement of the moving characteristics and an electric characteristics of ash components in the electric field and the performance test of the compounding electrodes were carried out. The performance of the equipment was also largely expanded aiming at effective use of sulfur and ash contained in the low grade coal produced in Chongqing, China, basing on the know-how acquired by the basic development and measurement of the equipment. The dry coal cleaning technology of a drum rotation type static electricity system in which the possibility of practical use became clear in this research is transferred to China, and local utilization is advanced, which is also suited the needs of other developing countries.
  埼玉大学地域共同研究センター, Japanese
  ISSN：1347-4758, CiNii Articles ID：120001389790, CiNii Books ID：AA11808968
• 84 Steam Gasification of Coal-Biomass Briquettes (2)　　　　　　　　　　　　　　　
  YAMADA T; AKANO M; HASHIMOTO H; SUZUKI T; MARUYAMA T; WANG Q.Y; KAMIDE M
  石炭科学会議発表論文集, Volume：39, Number：39, First page：185, Last page：186, 29 Oct. 2002
  A biobriquette made by mixing low grade chinese coal and larch bark with Ca(OH)_2 as a desulphization agent was pyrolyzed up to 1173K in nitrogen and gasified with steam at 1173K to measure the gaseous sulfur evolution. H_2S removal depression by biobriquette were more effective at pyrolyzed. period than gasigied process.
  The Japan Institute of Energy, Japanese
  DOI：https://doi.org/10.20550/jiesekitanronbun.39.0_185
  DOI ID：10.20550/jiesekitanronbun.39.0_185, CiNii Articles ID：110006857659, CiNii Books ID：AA12293003
• 1E1145 Studies on the Validity of Aquatic Plants as the Biomasses for Bio-briquette Production　　　　　　　　　　　　　　　
  Hanazawa A; Isobe Y; Sakamoto K; Wang Q.Y
  大気環境学会年会講演要旨集, Number：43, First page：263, Last page：263, 11 Sep. 2002
  Japan Society for Atmospheric Environment, Japanese
  CiNii Articles ID：110003725887, CiNii Books ID：AN10549786
• Study on utilization system of intermediates carbonized from solid industrial wastes
  王 青躍; 金田 昌之; 中家 良忠; 遠藤 浩志
  Volume：3, First page：99, Last page：100, 2002
  Many solid organic industrial wastes discarded from various industries in Japan are pyrolyzed and/or carbonized for the putposes of emission reduction, safety and reuse. The objective of this study is to establish the utilization system of intermediates or chars carbonized from these wastes using a pyrolysis device with over-heated steam. This pre-feasibility study suggested that char-biomass briquette (CBB) produced from the carbonized intermediates or chars ofwaste tire chips are available instead of the fossil fuel based on their burning characteristics. Furthermore, we will estimate the solid waste treatment system economically.
  Japanese
  ISSN：1347-4758, CiNii Articles ID：120001371539
• Receptor-oriented Source Apportioning and Analyzing Methods for Ambient Suspended Particulate Matter　　　　　　　　　　　　　　　
  王 青躍; 坂本 和彦
  CACS forum, Volume：22, First page：10, Last page：19, 2002
  Source apportionment of particulate matter in urban atmosphere is becoming important in air pollution control strategies. There are two techniques used for evaluating the source-receptor relationship. Receptor models are utilized for the identification and the apportionment of release sources using various data of ambient suspended particulate matters (or called ambient aerosols). The application of chemical mass balance method (CMB) is described, in which source profiles are needed to improve the CMB calculations. The analytical methods used for obtaining receptor data and source profiles are also introduced.
  埼玉大学分析センター, Japanese
  CiNii Articles ID：120001718039, CiNii Books ID：AN10402595
• 98. Steam Gasification of Coal-Biomass Briquettes　　　　　　　　　　　　　　　
  YAMADA T; AKANO M; SUZUKI T; MARUYAMA T; WANG Q.Y; KAMIDE M
  石炭科学会議発表論文集, Volume：38, Number：38, First page：399, Last page：402, 13 Nov. 2001
  Various biobriquettes made by mixing three Chinese bituminous coals and three types of biomass like agricultural and forest wastes were heat-treated at 1173K in nitrogen. Each biobriquette char obtained was then gasified with steam at 1073-1273K and 0.012-0.069MPa as the partial pressure to measure the reactivity. Results under identical gasification conditions showed the followings: (1) Biobriquette chars had larger reaction rates than the corresponding coal chars used for comparison. When Ca(OH)_2 as desulfurization agent was added, the reactivities of biobriquette chars were further enhanced to the same level of that for brown coal. (2) Increase of the rate in the presence of biomass and by addition of Ca(OH)_2 can be explained by such a situation that the portion of biomass would be preferentially gasified, thereby the contact area between unreacted coal char and steam could be increased and by combined catalytic effect of inherent biomass ash and calcium component, respectively. (3) For the composition of gases evolved, it depended on the ratio of coal/biomass in weight, gasification temperature, and the partial pressure of steam, indicating the controllability of H_2/CO ratio by selecting these operating factors.
  The Japan Institute of Energy, Japanese
  DOI：https://doi.org/10.20550/jiesekitanronbun.38.0_399
  DOI ID：10.20550/jiesekitanronbun.38.0_399, CiNii Articles ID：110006857556, CiNii Books ID：AA12293003
• Studies on Emission Control for Precursors Causing Acid Rain (IV) : Studies on Biomass for Production of Bio-briquette in Chongqing, China　　　　　　　　　　　　　　　
  Gao Shidong; Sakamoto Kazuhiko; Dong Xuhui; WANG Wei; MURANO Kentaro; HATAKEYAMA Shiro; WANG Qingyue
  Journal of Japan Society for Atmospheric Environment, Volume：36, Number：2, First page：78, Last page：87, 10 Mar. 2001
  Bio-briquette is a sort of composite fuel consisting of 70 to 85 percent of coal and 15 to 30 percent of biomass by weight, produced by high pressure briquetting method with compression only in the roll press technique without any binder. The biomasses working as a binder are various woody wastes and agriculture wastes such as rice straw, rice bran, sorghum stalk, wheat straw and so on. Total yearly output of woody wastes and agriculture wastes in Chongqing of China amounted to ca. 18.0 million tons based on our investigating data. Using 5% of them, yearly output of bio-briquette will be ca. 3.60 million tons and enough as the domestic fuels. So, there were enough biomass materials to produce bio-briquette in Chongqing. Ten types of biomasses including 4 types of agriculture wastes, 1 type of woody waste and wild grass, and 4 types of food manufacturing wastes collected in Chongqing were investigated for their combustion characteristics, emissions, binder action and breaking strength of bio-briquette prepared from each of them. The experimental results indicated that there were little emissions of air pollutants from biomass combustion and emission amounts for HCl and SO_2 Were 35〜912 and 52〜1764 mg per 1kg of biomass, respectively. Compared with raw coal, the biomass can reduce the ignition temperature and increase the combustibility of the bio-briquette. The breaking strength of the bio-briquette increased with increase of addition amount and lignin contents of biomasses, which were in range of 12.1〜33.3%. It is estimated based on our experimental results that the reduction efficiency of HCl, SO_2 and dust for the bio-briquette ranged 26〜61%, 82〜87% and 55〜83%, respectively. As a useful countermeasures for control of air pollutants discharged from civilian and small factory coal combustions, the bio-briquette with satisfactory strength could be produced by adding 25% biomasses without any special binder.
  公益社団法人大気環境学会, English
  DOI：https://doi.org/10.11298/taiki1995.36.2_78
  DOI ID：10.11298/taiki1995.36.2_78, ISSN：1341-4178, CiNii Articles ID：110003841170
• Studies on Emission Control for Precursors Causing Acid Rain. (IV). Studies on Biomass for Production of Bio-briquette in Chongqing, China.:Studies on Biomass for Production of Bio-briquette in Chongqing, China　　　　　　　　　　　　　　　
  Gao Shidong; Sakamoto Kazuhiko; Dong Xuhui; WANG Wei; MURANO Kentaro; HATAKEYAMA Shiro; WANG Qingyue
  Journal of Japan Society of Air Pollution, Volume：36, Number：2, First page：78, Last page：87, 2001
  Bio-briquette is a sort of composite fuel consisting of 70 to 85 percent of coal and 15 to 30 percent of biomass by weight, produced by high pressure briquetting method with compression only in the roll press technique without any binder. The biomasses working as a binder are various woody wastes and agriculture wastes such as rice straw, rice bran, sorghum stalk, wheat straw and so on. Total yearly output of woody wastes and agriculture wastes in Chongqing of China amounted to <I>ca.</I> 18.0 million tons based on our investigating data. Using 5% of them, yearly output of bio-briquette will be <I>ca.</I> 3.60 million tons and enough as the domestic fuels. So, there were enough biomass materials to produce bio-briquette in Chongqing.<BR>Ten types of biomasses including 4 types of agriculture wastes, 1 type of woody waste and wild grass, and 4 types of food manufacturing wastes collected in Chongqing were investigated for their combustion characteristics, emissions, binder action and breaking strength of bio-briquette prepared from each of them. The experimental results indicated that there were little emissions of air pollutants from biomass combustion and emission amounts for HCl and SO<SUB>2</SUB> were 35-912 and 52-1764mg per lkg of biomass, respectively. Compared with raw coal, the biomass can reduce the ignition temperature and increase the combustibility of the bio-briquette. The breaking strength of the bio-briquette increased with increase of addition amount and lignin contents of biomasses, which were in range of 12.1-33.3%. It is estimated based on our experimental results that the reduction efficiency of HC1, SO<SUB>2</SUB> and dust for the biobriquette ranged 26-61%, 82-87% and 55-83%, respectively. As a useful countermeasures for control of air pollutants discharged from civilian and small factory coal combustions, the bio-briquette with satisfactory strength could be produced by adding 25% biomasses without any special binder.
  Japan Society for Atmospheric Environment, English
  DOI：https://doi.org/10.11298/taiki1995.36.2_78
  DOI ID：10.11298/taiki1995.36.2_78, ISSN：1341-4178, CiNii Articles ID：130004377307
• Emission control of SO2 by dry coal-cleaning and bio-briquette technology　　　　　　　　　　　　　　　
  K. Sakamoto; Y. Terauchi; O. Ishitani; M. Kamide; Q. Wang
  Water, Air, and Soil Pollution, Volume：130, Number：1-4, First page：253, Last page：258, 2001
  In China, the large amount of sulfur dioxide and dust discharged from the combustion of low-grade raw coal causes severe air pollution and acid rain. Therefore, the need to control the emission of such pollutants is urgent. It is well known that wet coal-cleaning technology is used to prepare clean coal from low-grade raw coal containing large amounts of sulfur and ash. However, this technology is not used in areas where water is scarce or severely polluted, because of the high cost of treating the wastewater. In an attempt to overcome this limitation, we studied an integrated technology, which combines dry coal-cleaning and bio-briquetting technologies, to prepare clean coal from low-grade raw coal. In the dry coal-cleaning method, refined coal was separated from ash and other minerals containing inorganic sulfur as pyrite by means of the differences in their electrostatic character. Most of the sulfur left in the refined coal was organic sulfur. The residual ash was fixed in combustion ashes of bio-briquettes made from coal, biomass, and slaked lime (Ca/S mole ratio =2) under pressure. By combining these two technologies, we were able to decrease the emission of sulfur dioxide and ash by 70-90 % compared to the combustion of raw coal.
  Japan Society for Atmospheric Environment, English
  DOI：https://doi.org/10.1023/A:1013819404287
  DOI ID：10.1023/A:1013819404287, ISSN：0049-6979, CiNii Articles ID：110003725052, SCOPUS ID：0034751313
• 温暖化ガス排出抑制のための燃料開発に関する研究　　　　　　　　　　　　　　　
  坂本 和彦; 王 青躍; 関口 和彦; 細田 俊彰
  Number：2, First page：2, Last page：10, 2001
  Japanese
  ISSN：1347-4758, CiNii Articles ID：120001371568, CiNii Books ID：AA11808968
• Studies on Combustion and Sulfur Fixation Characteristics of Coal-Biomass Briquette　　　　　　　　　　　　　　　
  WANG Qing-Yue; LU Guo-Qing; SAKAMOTO Kazuhiko; MARUYAMA Toshihiko; KIM Hee-Joon; NARUSE Ichiro; HATAKEYAMA Shiro; MIZOGUCHI Tsuguo; LUO Rong-Xue; KAMIDE Mitsushi
  Earozoru Kenkyu, Volume：15, Number：4, First page：364, Last page：371, 20 Dec. 2000
  In order to utilize low-grade coals, which contain high concentrations of sulfur (2-6 wt. %) and ash (>15 wt. %, dry basis), controlling pollutant emissions during combustion in domestic stoves and small-capacity industrial boilers, a composite solid fuel "coal-biomass briquette" with sulfur fixation function was produced in a pilot plant in Chongqing city, China. It was composed of 80 wt. % of low-grade coal and 20 wt. % of biomass (<I>e. g.</I>, wood chips and agricultural wastes) with a small fraction of sulfur-fixation additives. In this study, we investigated the ignition and combustion characteristics of the coal-biomass briquettes, and developed a new sulfur fixation additive made from sub-product in gas welding industries. It was found that the coal-biomass briquette has the lower ignition temperature and higher combustion efficiency than the usual coal briquettes, and that the newly developed additive was superior to limestone or scallop shells in sulfur fixation capability. This method is simple, economical, and efficient, in terms of emission control of SO<SUB>2</SUB>, CO and other particulate pollutants from the combustion of low-grade coals using the conventional domestic stoves and boilers without modification. The coal-biomass briquette can be applicable for pollution control of coal combustion in some developing countries.
  日本エアロゾル学会, Japanese
  DOI：https://doi.org/10.11203/jar.15.364
  DOI ID：10.11203/jar.15.364, ISSN：0912-2834, CiNii Articles ID：10007139225, CiNii Books ID：AN10041511
• 1C1000 Development of static electricity separator for effective utilization of low-grade coals of China (2)　　　　　　　　　　　　　　　
  Wang Q; Kamide M; Maruyama T; Sakamoto K; Hatakeyama S; Taniguchi K
  大気環境学会年会講演要旨集, Number：41, First page：213, Last page：213, 26 Sep. 2000
  社団法人大気環境学会, Japanese
  CiNii Articles ID：110003725053, CiNii Books ID：AN10549786
• 1L1345 Basic study on emission control of CO_2 by combustion bio-briquette　　　　　　　　　　　　　　　
  Sakamoto K; Isobe Y; Wang J; Ishitani O; Wang Q
  大気環境学会年会講演要旨集, Number：41, First page：369, Last page：369, 26 Sep. 2000
  Japan Society for Atmospheric Environment, Japanese
  CiNii Articles ID：110003725209, CiNii Books ID：AN10549786
• 1L1400 Practical application of coal-biomass briquette technology for developing countries (2)　　　　　　　　　　　　　　　
  Wang Q; Maruyama T; Hiraiwa R; Sakamoto K; Mizoguchi T; Hatakeyama S; Du X
  大気環境学会年会講演要旨集, Number：41, First page：370, Last page：370, 26 Sep. 2000
  社団法人大気環境学会, Japanese
  CiNii Articles ID：110003725210, CiNii Books ID：AN10549786
• 1L1415 The project on enlightenment and training of ethnic minority in ban of air pollution of China　　　　　　　　　　　　　　　
  Wang Q; Mizoguchi T; Sakamoto K; Maruyama T; Hatakeyama S
  大気環境学会年会講演要旨集, Number：41, First page：371, Last page：371, 26 Sep. 2000
  社団法人大気環境学会, Japanese
  CiNii Articles ID：110003725211, CiNii Books ID：AN10549786
• Studies on Emission Control for Precursors Causing Acid Rain (III) Chemical Components of Coal and Bio-Briquette Combustion Aerosols and Its Relationship to Acid Rain　　　　　　　　　　　　　　　
  DONG Xuhui; GAO Shidong; SAKAMOTO Kazuhiko; HATAKEYAMA Shiro; WANG Qingyue; LUO Renxue; HASHIMOTO Yoshikazu; YANG Zhimin
  Earozoru Kenkyu, Volume：15, Number：1, First page：50, Last page：57, 20 Mar. 2000
  Air pollution in all regions of China is recognized as smoke pollution type. Coal combustion is the largest source of artificial particulate matter in the atmosphere. Especially, acidic aerosols could cause acidic precipitation with air pollution. The influence of acidic precipitation is continuously increasing in China. Therefore, we are studying a coal-biomass briquette technique as an effective control technique to reduce sulfur dioxide and other pollutants released from coal combustion. In order to understand the reduction of particulate matter and acidic aerosol emission with the bio-briquette technique, the acidity and the acid-neutralizing capacity of aerosols released from raw coal and bio-briquette combustion were measured. This study showed that H<SUP>+</SUP> concentration in aerosols from bio-briquette combustion is reduced by 43∼85 % compared to the raw-coal combustion, and HCl, SO<SUB>2</SUB> and dust emissions are also reduced by 26∼61, 82∼87 and 55∼83 %, respectively. It is concluded that bio-briquette technique not only reduces the pollutants emitted from coal combustion, but also lowers the acidity of particulate matter released from it.
  日本エアロゾル学会, English
  DOI：https://doi.org/10.11203/jar.15.50
  DOI ID：10.11203/jar.15.50, ISSN：0912-2834, CiNii Articles ID：10004667976, CiNii Books ID：AN10041511
• Studies on Emission Control for Precursors Causing Acid Rain (II) : Studies on Atmospheric Pollution Caused by Sulfur Dioxide and Its Control with Bio-briquetting in Chongqing, China　　　　　　　　　　　　　　　
  SAKAMOTO Kazuhiko; GAO Shidong; WANG Wei; WANG Jun; WATANABE Ikuo; WANG Qingyue
  Journal of Japan Society for Atmospheric Environment, Volume：35, Number：2, First page：124, Last page：131, 10 Mar. 2000
  The coal consumption in Chongqing, which has suffered from serious air pollution and acid rain, is very large. Moreover, the sulfur content in coal produced in the region is very high. SO_2 resulting in serious acidification of rainwater is emitted from coal combustion and is concentrated in lower atmosphere due to few desulfurizing equipment and unfavorable meteorological conditions for the diffusion of air pollutants in the area. For this reason, the control technique for S0_2 emission is very important. In this paper, the reduction efficiency of S0_2 emitted by combustion of the biobriquette prepared from low graded raw coal with high sulfur content, biomass and slaked lime in Chongqing was investigated by the model combustion experiment. Under our experimental conditions, the reducing efficiency of S0_2 emission from high sulfur coal-biomass briquette amounted to 82〜95%. Especially, compared with the coal washing, the coal-biomass briquetting technique can effectively reduce sulfur emission. It was considered that the bio-briquette was useful to civilian and small factory consumes as a part of the countermeasures for S0_2 emission control. This result suggested that coal-biomass briquetting technique was suitable in Chongqing.
  公益社団法人大気環境学会, English
  DOI：https://doi.org/10.11298/taiki1995.35.2_124
  DOI ID：10.11298/taiki1995.35.2_124, ISSN：1341-4178, CiNii Articles ID：110003841208
• Studies on Emission Control for Precursors Causing Acid Rain. (II). Studies on Atmospheric Pollution Caused by Sulfur Dioxide and Its Control with Bio-briquetting in Chongqing, China.:Studies on Emission Control for Precursors Causing Acid Rain (II)　　　　　　　　　　　　　　　
  SAKAMOTO Kazuhiko; GAO Shidong; WANG Wei; WANG Jun; WATANABE Ikuo; WANG Qingyue
  Journal of Japan Society of Air Pollution, Volume：35, Number：2, First page：124, Last page：131, 2000
  The coal consumption in Chongqing, which has suffered from serious air pollution and acid rain, is very large. Moreover, the sulfur content in coal produced in the region is very high. SO<SUB>2</SUB> resulting in serious acidification of rainwater is emitted from coal combustion and is concentrated in lower atmosphere due to few desulfurizing equipment and unfavorable meteorological conditions for the diffusion of air pollutants in the area. For this reason, the control technique for SO<SUB>2</SUB> emission is very important.<BR>In this paper, the reduction efficiency of SO<SUB>2</SUB> emitted by combustion of the biobriquette prepared from low graded raw coal with high sulfur content, biomass and slaked lime in Chongqing was investigated by the model combustion experiment. Under our experimental conditions, the reducing efficiency of SO<SUB>2</SUB> emission from high sulfur coal-biomass briquette amounted to 82-95%. Especially, compared with the coal washing, the coal-biomass briquetting technique can effectively reduce sulfur emission. It was considered that the bio-briquette was useful to civilian and small factory consumes as a part of the countermeasures for SO2 emission control. This result suggested that coal-biomass briquetting technique was suitable in Chongqing.
  Japan Society for Atmospheric Environment, English
  DOI：https://doi.org/10.11298/taiki1995.35.2_124
  DOI ID：10.11298/taiki1995.35.2_124, ISSN：1341-4178, CiNii Articles ID：130004377280
• 第27回環境賞 優秀賞 石炭燃焼に伴う大気汚染(SO2、粉じん)制御技術としてバイオブリケットの開発と実用化--開発途上国での利用を目的として (特集:第27回環境賞)　　　　　　　　　　　　　　　
  王 青躍; 溝口 次夫; 坂本 和彦
  Number：119, First page：4, Last page：10, 2000
  Japanese
  ISSN：0285-9769, CiNii Articles ID：40000535175, CiNii Books ID：AN00298340
• 1H13 Practical application of coal-baiomass briquette technology in China　　　　　　　　　　　　　　　
  Wang Q. Y; Sakamoto K; Maruyama T; Mizoguchi T; Hatakeyama S; Pin J; Luo R. X; Arai T
  大気環境学会年会講演要旨集, Number：40, First page：423, Last page：423, 28 Sep. 1999
  社団法人大気環境学会, Japanese
  CiNii Articles ID：110003724795, CiNii Books ID：AN10549786
• 1J19 Development of Static Electricity Separator for effective utilization of low grade coals of China　　　　　　　　　　　　　　　
  Wang Q.Y; Arai T; Kamide M; Maruyama Toshihiko; Sakamoto K; Hatakeyama S; Mizoguchi T; Taniguchi K
  大気環境学会年会講演要旨集, Number：40, First page：455, Last page：455, 28 Sep. 1999
  社団法人大気環境学会, Japanese
  CiNii Articles ID：110003724827, CiNii Books ID：AN10549786
• 1J20 Studies and Assessment on Experimental Combustion of Coal-biomass Briquette　　　　　　　　　　　　　　　
  Wang Q.Y; Arai T; Sakamoto K; Hatakeyama S; Luo R.X; Mizoguchi T; Maruyama T
  大気環境学会年会講演要旨集, Number：40, First page：456, Last page：456, 28 Sep. 1999
  社団法人大気環境学会, Japanese
  CiNii Articles ID：110003724828, CiNii Books ID：AN10549786
• 中国における省エネルギー・環境調和型農業産業化技術の現地化とそのモデル事業の導入構想について　　　　　　　　　　　　　　　
  王 青躍; 新井 哲也; 丸山 敏彦
  Volume：35, Number：8, First page：758, Last page：765, Aug. 1999
  Japanese
  ISSN：1340-2552, CiNii Articles ID：40005034960, CiNii Books ID：AN10423857
• Studies on Static Samplers for Aerosol(Part 2)　　　　　　　　　　　　　　　
  MINAKAWA N; MIZOGICHI T; SAKAMOTO K; WANG Q. Y; GAO S. D
  エアロゾル科学・技術研究討論会 = Symposium on Aerosol Science & Technology, Volume：16, First page：90, Last page：92, 01 Jul. 1999
  Japanese
  CiNii Articles ID：10002782749, CiNii Books ID：AA11498601
• 中国重慶市の大気汚染と呼吸器疾患 (京都大学環境衛生工学研究会第21回シンポジウム講演論文集(1999年7月22日・23日,京都))　　　　　　　　　　　　　　　
  溝口 次夫; 周 燕栄; 王 青躍
  Volume：13, Number：3, First page：172, Last page：175, Jun. 1999
  Japanese
  ISSN：0913-7025, CiNii Articles ID：40004683204, CiNii Books ID：AN10131829
• 2F1115 Development of Static Electricity Separator for low-grade coals of China　　　　　　　　　　　　　　　
  Wang Qing-Yue; Taniguchi K; Kamide M; Maruyama T; Sakamoto K
  大気環境学会年会講演要旨集, Number：39, First page：370, Last page：370, 24 Sep. 1998
  社団法人大気環境学会, Japanese
  CiNii Articles ID：110003724408, CiNii Books ID：AN10549786
• 2F1130 Combustion Rate Analysis of Elliptical Coal-Biomass Briquette　　　　　　　　　　　　　　　
  Wang Qing-Yue; Lu Guo-Qing; Kim Hee-Joon; Naruse I
  大気環境学会年会講演要旨集, Number：39, First page：371, Last page：371, 24 Sep. 1998
  Japan Society for Atmospheric Environment, Japanese
  CiNii Articles ID：110003724409, CiNii Books ID：AN10549786
• 2F1145 Self-desulfurization and-denitrification Characteristics of Coal-Biomass Briquette from Pilot-plant of Chongqing, China　　　　　　　　　　　　　　　
  Wang Qing-Yue; Lu Guo-Qing; Luo Ren-Xue; Sakamoto K; Hatakeyama S; Mizoguchi T
  大気環境学会年会講演要旨集, Number：39, First page：372, Last page：372, 24 Sep. 1998
  社団法人大気環境学会, Japanese
  CiNii Articles ID：110003724410, CiNii Books ID：AN10549786
• Behavior and Source of Atmospheric Particulate Chlorides in Early Winter Season at South-Kanto Plain　　　　　　　　　　　　　　　
  SAKAMOTO Kazuhiko; WANG Qing-yue; MIZUNO Tateki; YOSHIKADO Hiroshi; KANEYASU Naoki
  Earozoru Kenkyu, Volume：13, Number：3, First page：216, Last page：221, 20 Sep. 1998
  In early winter season, severe air pollution due to suspended particulate matter occurs frequently at South-Kanto Plain. During such episodes observed on November 26 and 27, and December 6 and 7 in 1991, intensive field observations were conducted in order to investigate the behavior and source of atmospheric particulate chlorides. Although very high concentrations of TSP, SPM<SUB>2.4</SUB> (fine particles less than 2.4 μm) and chlorides were observed, very low level of seasalt chlorides were found. Thus, most of the total chlorides in suspended particulate matter were non-seasalt chlorides existing in fine particles less than 2.4 μm collected at Kanda or Urawa. The result of high correlations (significance levels higher than 99%) between [Cl<SUP>-</SUP>]nss and [K<SUP>+</SUP>] or [Cl<SUP>-</SUP>]nss and [Zn] calculated for SPM<SUB>2.4</SUB>, shows the evidence that high level of non-seasalt chlorides was the secondary products of HCl emitted from refuse incineration and/or biomass burning under the stagnation with low temperature and high relative humidity of lower layer in early winter.
  日本エアロゾル学会, Japanese
  DOI：https://doi.org/10.11203/jar.13.216
  DOI ID：10.11203/jar.13.216, ISSN：0912-2834, CiNii Articles ID：10002783115, CiNii Books ID：AN10041511
• 「中国南西地域の石炭燃焼によるSO_2対策」　　　　　　　　　　　　　　　
  溝口 次夫; 王 青躍; 坂本 和彦; 丸山 敏彦
  Volume：3, Number：2, First page：187, Last page：194, 15 Sep. 1998
  Japanese
  ISSN：1342-3983, CiNii Articles ID：10011188224, CiNii Books ID：AA11822903
• Studies on Static Samplers for collecting aerosol -Use in Industrial Districts, China-　　　　　　　　　　　　　　　
  溝口 次夫; 坂本 和彦; 新井 哲也; 皆川 直人; 王 青躍; 西川 雅彦; 佐藤 幸弘
  エアロゾル科学・技術研究討論会 = Symposium on Aerosol Science & Technology, Volume：15, First page：82, Last page：84, Aug. 1998
  Japanese
  CiNii Articles ID：10002846101, CiNii Books ID：AA11498601
• Integrated Environmental Protection Strategy Using Coal-Biomass Briquette　　　　　　　　　　　　　　　
  GAO Shidong; DONG Xuhui; WANG Jun; ISOBE Yugo; ISHITANI Osamu; SAKAMOTO Kazuhiko; WANG Wei; WANG Qingyue
  エアロゾル科学・技術研究討論会 = Symposium on Aerosol Science & Technology, Volume：15, First page：180, Last page：182, Aug. 1998
  Japanese
  CiNii Articles ID：10002846257, CiNii Books ID：AA11498601
• Basic investigation on the dry cleaning technology of low graded coals in Chongqing, China　　　　　　　　　　　　　　　
  WANG Q. Y; KAMIDE M; MARUYAMA T; TANIGUCHI K; SAKAMOTO K; HATAKEYAMA S; LU G. Q
  エアロゾル科学・技術研究討論会 = Symposium on Aerosol Science & Technology, Volume：15, First page：284, Last page：286, Aug. 1998
  Japanese
  CiNii Articles ID：10002846387, CiNii Books ID：AA11498601
• Experimental study(II)on combustion characteristics of coal-biomass briquette made in Chongqing, China　　　　　　　　　　　　　　　
  WANG Q Y; LU G. Q; LUO R. X; SAKAMOTO K; KIM H. J; MIZOGUCHI T; HATAKEYAMA S; KAMIDE M
  エアロゾル科学・技術研究討論会 = Symposium on Aerosol Science & Technology, Volume：15, First page：290, Last page：292, Aug. 1998
  Japanese
  CiNii Articles ID：10002846394, CiNii Books ID：AA11498601
• 中国重慶市の大気汚染制御技術(1) (京都大学環境衛生工学研究会第20回シンポジウム講演論文集(1998年7月23日・24日,京都)--一般講演)　　　　　　　　　　　　　　　
  溝口 次夫; 王 青躍; 丸山 敏彦
  Volume：12, Number：3, First page：61, Last page：66, Jul. 1998
  Japanese
  ISSN：0913-7025, CiNii Articles ID：40004683129, CiNii Books ID：AN10131829
• Present Status of Air Pollution and Emission Countermeasures in China (Present Status of Air Pollution in Developing Countries)　　　　　　　　　　　　　　　
  Wang Qing-yue
  Number：39, First page：58, Last page：63, 1998
  Japanese
  CiNii Articles ID：110003724192, CiNii Books ID：AN10549786
• SOURCE ON CHILORIDES OF AMBIENT AEROSOLS IN THE EARLY WINTER SEASON　　　　　　　　　　　　　　　
  SAKAMOTO Kazuhiko; WANG Qing Yue
  エアロゾル科学・技術研究討論会 = Symposium on Aerosol Science & Technology, Volume：12, First page：10, Last page：12, 23 Aug. 1995
  Japanese
  CiNii Articles ID：10009825858, CiNii Books ID：AA11498601
• Spatial Differences of Carbonate Components in Soil and Road Dust and Their Relationship with Ambient Aerosol Acidity.　　　　　　　　　　　　　　　
  WANG Qing Yue; SAKAMOTO Kazuhiko
  Earozoru Kenkyu, Volume：9, Number：4, First page：345, Last page：353, 1994
  In order to reveal compositional differences between airborne road dust and airborne soil particles and to evaluate their local emissions in the early wintertime, the determination of geological profiles becomes a crucial and essential work. In this study, road dust and soil particles collected at the 7 sites of southern Kanto plain were prepared for the chemical analyses of apparent elemental carbon (Cae), apparent organic carbon (Cao), carbonate (CO<SUB>3</SUB><SUP>2-</SUP>), elements and water soluble ions. Though the main components, Al, Fe, Mg, Na, Ti and K, were at the same levels of road dust with these of soil particles,the concentrations of Cae, Cao, Ca and CO<SUB>3</SUB><SUP>2-</SUP> in the road dust samples were observed about one order higher than those in the soil samples. Cae, Cao, Ca and CO<SUB>3</SUB><SUP>2-</SUP> can be the better indicators used for separating the contribution of road dust from soil particles with the Chemical Mass Balance (CMB) method. As the equivalent ratios of [Ca<SUP>2+</SUP>] / [CO<SUB>3</SUB><SUP>2-</SUP>] for road dust samples were near 1.0, but ones for soil samples were about 10. Thus, the most of Ca<SUP>2+</SUP> and CO<SUB>3</SUB><SUP>2-</SUP> in road dust are probably existing as a form of CaCO<SUB>3</SUB> particle which has neutralizing effect on ambient aerosol acidity as a major alkaline component. A satisfied explanation for spatial differences and diurnal variations of ambient aerosol acidity (H<SUP>+</SUP>) was given using the CMB results in this study.
  Japan Association of Aerosol Science and Technology, Japanese
  DOI：https://doi.org/10.11203/jar.9.345
  DOI ID：10.11203/jar.9.345, ISSN：0912-2834, CiNii Articles ID：130000327863
• Spatial Distributions of Ambient Aerosol Acidity in Early Winter at South-Kanto Area, Japan.　　　　　　　　　　　　　　　
  SAKAMOTO Kazuhiko; WANG Qing Yue; KIMIJIMA Katsunori; OKUYAMA Masaki; MIZUNO Tateki; YOSHIKADO Hiroshi; KANEYASU Naoki
  ENVIRONMENTAL SCIENCE, Volume：7, Number：3, First page：237, Last page：244, 1994
  Strong atmospheric acidity primarily caused by high SO<SUB>2</SUB> emissions was found to be responsible to a serious air pollution in China from our previous study. It was indicated that the aerosol H+ concentrations so-called net aerosol acidity at entirely distant sites were very different from each other, probably due to local site influences such as topography, distance from the source regions, i.e. transport of atmospheric acidic pollutants, and local neutralizing capacity of the air mass. The high atmospheric acidity was determined at a rural site located inabout 150 km downwind of the densest area of SO<SUB>2</SUB> emissions in U. S. A., moreover the neutralizing capacity of the air mass was insufficient. In recent years, attention has been focused on acid aerosols and their potential health effects. Some significant laboratory researches had been done and reviewed. Four-step risk assessment, i.e., hazard identification, doseresponse estimation, exposure assessment and risk characterization was also emphasized in the review. However, the knowledge of acid aerosols has continued to grow at a slow pace in Japan and has been scarecely studied, especially for wintertime since the acid aerosol pollution phenomenon was difficult to be observed during the season. Furthermore, the causes introducting high aerosol acidity in Japan may be different from U. S. A. in type and intensity of emission sources and/or weather conditions, etc. Therefore, in order to propose an abatement strategy for acid aerosols in Japan and to estimate their risk, the systematic measurements and data accumulation of ambient aerosol acidity and its source apporionment are necessary. In this report, the first results on levels and distributions of ambient aerosol acidity were presented from a short-term field investigation at South-Kanto Area in early wintertime of 1990 when the weather conditions were being dominated by widespread stagnation. Although the behavior and source apportionments of ambient aerosols at two sampling sites of Urawa and Kanda were briefly discussed using a chemical mass balance method (CMB), here we present the spatial distributions of ambient aerosol acidity and its relationship with local emission sources over all sites.
  SOCIETY OF ENVIRONMENTAL SCIENCE, JAPAN, Japanese
  DOI ID：10.11353/sesj1988.7.237, ISSN：0915-0048, CiNii Articles ID：130004304392, CiNii Books ID：AN10165252

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• Determination of ultra and fine particles containing pollen cross-allergen, plastics and toxic compounds in urban atmosphere　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), 01 Apr. 2022 - 31 Mar. 2025
  Saitama University
  Grant amount(Total)：17160000, Direct funding：13200000, Indirect funding：3960000
  Grant number：23K25001
• Determination of ultra and fine particles containing pollen cross-allergen, plastics and toxic compounds in urban atmosphere　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), 01 Apr. 2022 - 31 Mar. 2025
  Saitama University
  Grant amount(Total)：17160000, Direct funding：13200000, Indirect funding：3960000
  Grant number：22H03747
• Characterization of polycyclic aromatic hydrocarbons and pollen allergenic fine particles in urban atmosphere　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), 01 Apr. 2018 - 31 Mar. 2021
  Wang Qingyue, Saitama University
  Grant amount(Total)：17160000, Direct funding：13200000, Indirect funding：3960000
  The purpose of this study is to investigate the pollen grain and allergen concentration in autumn at different urban sites. Andersen high-volume air samplers were used to collect allergen. Collected protein concentration were determined by the protein assay and allergen concentrations were determined. As a result, it was suggested that the airborne pollen counts were influenced by surrounding vegetation because the proportion of pollen species varied depending on the sampling sites. In addition, it is suggested that high temperature during growing period decrease pollen counts and no typhoon induces long pollen season. Allergen were observed in the different stage filters by allergen determining. Therefore, there are different periods that pollinosis patients should be careful by different site. In addition, it was suggested that the autumn allergen may be released in fine particles same as the spring pollen allergen, and it will be the reason of pollinosis healthy problem.
  Grant number：18H03384
• Reduction technique for air pollution and resident health hazard evaluation with Chinese waste biomass improper processing　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), 01 Apr. 2015 - 31 Mar. 2018
  WANG (O) Qingyue (Seiyo); KUROKAWA HIDEKI; SUGIYAMA KAZUO; NAKAJIMA DAISUKEI, Saitama University
  Grant amount(Total)：18330000, Direct funding：14100000, Indirect funding：4230000
  In this study, the circularity energy system was made more harmless for reduction of CO2, PM2.5 discharged from the Chinese urban areas and rural area. The information on the disposal and burning was also collected with biomass with the improper disposal biomass and burning. The processing alternate fossil fuel, application of an air pollution reduction technique of technology is investigated and living body toxic reduction in PM2.5 and toxic substances by environmental engineering research. It is estimated for the development and the application spread of an air pollution reduction technique through the different field fusion type case study which are atmospheric chemistry engineering, the energy science and system engineering of resources, etc. in particular. It was also investigated about the special quality for the exhaust gas flammability test of the reduction effects of the exhaust gases.
  Grant number：15H05119
• Development of the measurement technique of the atmospheric organic aerosol　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research, Grant-in-Aid for Challenging Exploratory Research, 01 Apr. 2013 - 31 Mar. 2015
  WANG (O) Qingyue (Seiyo), Saitama University
  Grant amount(Total)：4160000, Direct funding：3200000, Indirect funding：960000
  In this study, we have collected Japanese cedar pollen from two sites of urban residential zones of Saitama City, Japan during the pollination period. At the same time, we have investigated the airborne pollen behavior, and studied the relationships between airborne pollen counts and meteorological factors such rainfall, wind speed and wind direction. The respirable particles in sizes from <1.1 micrometers to >7.0 micrometers were collected by two Andersen air samplers and major allergenic concentrations of Cry j 1 were determined using an ELISA (enzyme-linked immunosorbent assay) method. It was suggested that the pollens are resuspended by the heavy traffic in the urban area, and released Cry j 1 as the airborne fine particles. These airborne fine allergenic particles easily break through the ventilation of indoor environment and appear to play an important role in the increasing incidence of asthma in the lower human respiratory tract.
  Grant number：25550006
• Release mechanism and denaturation of the airborne pollen grains in the urban area　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), 01 Apr. 2012 - 31 Mar. 2015
  WANG (O) Qingyue (Seiyo); SUZUKI Miho; NAKAJIMA Daisukei; MIWA Makoto, Saitama University
  Grant amount(Total)：17290000, Direct funding：13300000, Indirect funding：3990000
  We reported that absorption of environmental pollutants on various airborne pollen grains, aggravation of the allergenicity, may damage on the pollen cell wall. The airborne behavior of fine allergenic particles especially released from Cryptomeria japonica pollen were abundantly determined when sunny days after rainfall. From the result of rainfall sampling and analysis, it was indicated that a great number of pollens were trapped in precipitatiduring the initial rainfall. Many burst pollen grains were also observed in the rainwater when the Yellow Sand events. The fine allergenic particles such as fractions of cell wall and contents in pollen were released from burst of pollen grains. Allergenic contents was increased when contacted with a weakly basic solution during the season of Yellow Sand. We summarized the various studies for elucidation of scattering behavior of various pollens focused on Cryptomeria japonica pollen and its allergenic particles in urban atmosphere of Japan.
  Grant number：24310005
• Impacts of Aerosols in East Asia on Plants and Human Health-Research Generalization　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area), Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area), 13 Nov. 2008 - 31 Mar. 2014
  HATAKEYAMA Shiro; HONDA Yasushi; IZUTA Takeshi; TOHNO Susumu; SUGIMOTO Nobuo; HARA Hiroshi; OKUYAMA Kikuo; KAMIYA Hidehiro; HIROKAWA Jun; KANEYASU Naoki; FUNADA Ryo; MATSUDA Kazuhide; TAKANO Hirohisa; WANG Qingyue, Tokyo University of Agriculture and Technology
  Grant amount(Total)：41080000, Direct funding：31600000, Indirect funding：9480000
  Grant number：20120001
• Studies on in situ measurement technology of characterization of bioaerosols　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research, Grant-in-Aid for Challenging Exploratory Research, 2011 - 2012
  WANG Qingyue, Saitama University
  Grant amount(Total)：3900000, Direct funding：3000000, Indirect funding：900000
  Japanese cedar pollinosis has been increasing in urban areas in Kanto, Japan. The pollen allergenic species distribute abundantly in fine particles which can be explained that these allergenic species are in the form of small size particles released from the coarse pollen grains as bioaerosols. In this study, in order to determine the daughter pollen allergenic particles, we try to develop the method for measuring airborne allergenic species by using in situ measurement technology based on the surface plasmon resonance principle. Since an increasing response as biomolecules interact with bioaerosols, the binding, dissociation, specificity, affinity, mass behavior and allergenic concentration can be determined.
  Grant number：23651005
• Investigation on Application of Integrated and Sustainable Environment Protection Strategy Using Coal-Biomass Briquettes to Developing Countries　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), 2010 - 2012
  SAKAMOTO Kazuhiko; OU Seiyo; MIWA Makoto, Saitama University
  Grant amount(Total)：16900000, Direct funding：13000000, Indirect funding：3900000
  The abatement of sulfur dioxide and carbon dioxide emissions was achieved by using coal-biomass briquettes (or bio-briquettes, BBs) prepared from low-grade pulverized coal, waste biomass as an energy crop, and a sulfur fixation agent (slaked lime). Furthermore, BBs' combustion ash appears to be an effective liming material with little potential for adverse environmental impacts and could be used effectively as an acid-soil amendment to improve crop productivity. However, in order to apply this integrated and sustainable environmental strategy using coal-biomass briquettes to developing countries such as highly humid Vietnam further investigation on biomass drying and its stock yard is required.
  Grant number：22404005
• Studies on less fossil resources and material utilization from organic wastes in urban areas of China　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), 2010 - 2012
  WANG Qingyue; KUROKAWA Hideki; SUGIYAMA Kazuo; NAKAJIMA Daisukei, Saitama University
  Grant amount(Total)：17160000, Direct funding：13200000, Indirect funding：3960000
  As the economic development and highly industrial activities, large quantities of the urban organic solid wastes have being discharged from agriculture and forestry industries in several urban regions in China and their neighboring areas. In this study, we studied and developed the plant resin synthesis and carbonizing processes under the low temperature and normal pressure as the techniques for less fossil resources and reduction of these organic solid wastes. It was aimed at the developing technology of renewable carbonaceous resources and the effective material utilization. From the data collection and field investigation in several main representative urban area in China, we also examined and studied in particular the possibility of these utilization systems.
  Grant number：22404022
• MODIFICATION OF AIRBORNE JAPANESE CEDAR POLLEN CONTACTED WITH YELLOW SAND IN URBAN ATMOSPHERE　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area), Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area), 2008 - 2012
  WANG Qingyue; SUZUKI Miho; NAKAJIMA Daisukei; MIWA Makoto, Saitama University
  Grant amount(Total)：53560000, Direct funding：41200000, Indirect funding：12360000
  The peaks of Japanese cedar (Cryptomeria japonica) pollen grains has been observed in Japan at the Yellow and (Kosa) events during the pollen scattering season. The pollen allergenic species distribute abundantly in fine particles in urban area released from coarse particles originated by the pollen grains. It is thought that those daughter allergenic particles are responsible for inducing asthma by breaking into lower respiratory tract. Therefore, it is necessary to clarify the release mechanism of the pollen allergenic species under air pollutants influence. In this study, we investigated the behavior of the pollen grains, its mall-sized allergenic species and allergenicity in the presence of ionic concentrations and pH values in rainwater during and after rainfall events.
  Grant number：20120015
• 生体分子間相互作用を利用した大気有機エアロゾルの化学性状高速・高感度計測法の開発　　　　　　　　　　　　　　　
  2009 - 2010
  Grant amount(Total)：3200000, Direct funding：3200000
  Grant number：21651002
• Development of Emission Control Technology of Global Warming Gas Based on Simultaneous Usage of Exhausting and Renewable Resources for Developing Countries　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), 2007 - 2009
  SAKAMOTO Kazuhiko; OU Seiyo; MIWA Makoto, Saitama University
  Grant amount(Total)：18200000, Direct funding：14000000, Indirect funding：4200000
  The coal-biomass briquettes (or bio-briquettes, BBs) were produced from low-grade pulverized coal, aquatic plants (waste biomass as an energy crop), and a sulfur fixation agent (slaked lime) under high pressure without any binder. The abatement of sulfur dioxide and carbon dioxide emissions was achieved by simultaneous usage of exhausting and renewable resources as raw materials of BBs. Furthermore, BBs' combustion ash could be used effectively as an acid-soil amendment to improve crop productivity.
  Grant number：19310045
• Investigation on carbonaceous resources and utilization system from solid organic waste carbonizing processes in urban areas of China　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), 2007 - 2009
  WANG Qingyue; KUROKAWA Hideki; SUGIYAMA Kazuo; NAKAJIMA Daisukei, Saitama University
  Grant amount(Total)：16900000, Direct funding：13000000, Indirect funding：3900000
  In this study, we comparatively studied the organic waste carbonizing processes under the low temperature and low pressure as the technique for detoxification and reduction of the organic solid waste disposal discharged from urban, agriculture and forestry industries in substitution of the incineration processing for those wastes with the economic development and highly industrial activities in large quantities in several urban regions in China and their neighboring areas. It was aimed at the developing technology of renewable carbonaceous resources based on the effective utilization of the processing products (carbide). With field investigation in a representative area in China, data collection, we also examined and studied in particular the possibility of the carbide utilization system.
  Grant number：19404021
• STUDIES ON CHEMICAL AND PHYSICAL EFFECTS OF AIR POLLUTANTS ON AIRBORNE POLLEN IN URBANAREA OF JAPAN　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), 2005 - 2007
  WANG Qingyue; UCHIYAMA Iwao; MIWA Makoto; SAKAMOTO Kazuhiko, Saitama University
  Grant amount(Total)：16790000, Direct funding：15500000, Indirect funding：1290000
  The purpose of this study is to evaluate the adverse factors influencing by air pollutants and to aid biomedical research by investigating the deposition of air pollutants on Japanese cedar pollen between urban and mountainous areas. Suspended particulate matter and Japanese cedar perigonium pollen were collected to identify the deposition of air pollutants at Saitama urban area and a mountainous area, during the pollination season. Ionic and metallic components of these samples and perigonium and pollen were analyzed. We found that crustal components (Al, Fe and Ti) tended to deposit on perigonium pollen. The amount of ionic components of particles (NO_3^-, SO_4^<2-> and NH_4^+) and gaseous pollutants (NO_2, SO_2 and NH_3) deposited on the perigonium pollen were higher in the urban than in the mountainous areas, the fact of which was proven by determination of gaseous pollutants exposed to Japanese cedar pollen. It is suggested that these phenomena may affect pollinosis and therefore it is necessary to investigate implication on biomedical researches.
  In addition, morphological observation of Ubisch bodies exfoliated from pollen and ruptured pollens was performed and confirmed with a scanning electron microscope. Moreover, the existing evidences of visualized Cry j 1 and Cry j 2 allergen particles below 1.1 μm were also sensitively found by an immunofluorescence technique with a fluorescence microscope. Simultaneously, the high concentrations of Cry j 1 and/or Cry j 2 were determined in the fine particle sizes below 1.1 μm. It was suggested that airborne respirable particulate matters containing Cry j 1 and Cry j 2 play a key role in the increasing incidence of asthma in the lower respiratory tract. Furthermore, since Cry j 1 (or Cry j 2) fine particles were suspended in the atmosphere over a long time more after released, the daily variation delays in the peaks of these concentrations compared with the peaks of airborne pollen counts were observed. It is important to observe and determine the size distribution of airborne Japanese cedar pollen allergen particles in the long-term sampling research continually, and to elucidate the allergen particle release mechanisms.
  Grant number：17310031
• Preparation of coal-biomass briquette from low graded raw coal and utilization of its combustion ash for acidic-soil improvement　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), 2004 - 2006
  SAKAMOTO Kazuhiko; KADONO Hiroshi; WANG Qingyue; MIWA Makoto, Saitama University
  Grant amount(Total)：15700000, Direct funding：15700000
  1. Nano-scale growth rates of ectomycorrhiza infected and non-infected pine seedling roots were measured before and after the ozone exposure using statistical interferometry. We observed the former seedlings were more resistive than the latter ones to ozone stress.
  2. Effective growth of radish under addition of simulated acid rain was observed by simultaneous application of coal-biomass briquette (BB) combustion ash and pig compost to acidic soil such as simultaneous application of its combustion ash and chemical fertilizer.
  3. Al content in radish harvested for simultaneous application of its combustion ash and manure compost was lower compared to simultaneous application of its combustion ash and chemical fertilizer.
  4. Probably, reduced intake of phytotoxic heavy metals to plant tissue and promotion of plant growth were induced by the soil-pH control due to strong acid-neutralizing ability of its combustion ash and chelating action of the compost with phytotoxic metals and increasing plant nutrient supply capacity derived from the compost.
  5. The above experimental results indicate the utilization of BB as a domestic and light industrial fuel and the simultaneous application of the bio-briquette combustion ash and the compost to acidic agricultural soil in developing countries suffered from air pollution and acid rain, make possible to control sulfur dioxide-related air pollution and acid rain, improve the soil pH, supply the plant nutrients. Therefore, it is very feasible the utilization of BE as a domestic and light industrial fuel without production of any waste materials.
  6. We summarized the above results as a research report. Then, we continue to investigate the popularization methods of bio-briquettes as a domestic and light industrial fuel.
  Grant number：16310050
• Basic study on recovery energy and gasification with effective utilization of waste coal and biomasses　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), 2003 - 2005
  WANG Qingyue; YAMADA Tetsuo; KEKIGUCHI Kazuhiko, Saitama University
  Grant amount(Total)：13200000, Direct funding：13200000
  Recently, energy demanded has increased with significantly development of economy in China. Respond to this tendency, China has proposed increment of coal and natural gas production and oil import. The high emission of CO_2 (carbon dioxide, a greenhouse gas) with increasing consumption of a large amount of fossil fuels is critical issue. Moreover, waste coal which is discarded coal when coal extraction and cleaning, because of having high-ash content, high-sulfur content and low-calorific value is discarded since the scarce availability, occupancy of vast area of land and air pollution by autogenous ignition and water pollution, an appropriate treatment and effective utilizing technology of waste coal is required. Therefore, China has paid the attention to efficient use of waste coal and energy recovery as a new energy. The purposes and objectives of this study are the efficient use of waste coal. We made waste coal-biomass briquette as solid fuel and conducted basic research on the combustion test and gasification technology. As the result, it was suggested that waste coal-biomass briquette had compression strength exceeding standard of internal transport in China, calorific value exceeding civilian use in China, good burning quality and reduction of sulfur oxide. In addition, it was implied that dissemination of waste coal-biomass briquette as a solid fuel was possible because the lower cost of waste coal-biomass briquette than the routine coal-biomass briquette. And as basic research about gasification technology of waste coal-biomass briquette, it was suggested that reactivity of gasification was progressive, hydrogen sulfide was fixed, and calorific value of gas fuel produced was increased in comparison with gasification of its original waste coal. We thought that these effects came from addition of biomass which may cause the increment of carbon content and high surface area and catalytic metals such as K, Na and Ca contained in biomass and calcium hydroxide which is as a sulfur-fixation agent. In addition, it was found that the reactivity of gasification was improved by the suitable increasing briquetting pressure when waste coal-biomass briquette was prepared. These basic researches implied that possibility of converting waste coal-biomass briquette to clean gas fuel by gasification. These study results indicate the possibility of the application of waste coal-biomass briquette as an energy resource of the solid fuel or the gas fuel, and may lead to the recovery energy and effective utilization technology of waste coal.
  Grant number：15404004