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| 1 | Prediction of daytime variations of HO_2 radical concentrations in the marine boundary layer using BP network显示文摘A Back-Propagation Neural Network (BPNN) was established to predict the daytime variations of HO 2 radical concentration observed in the field campaign RISFEX 2003 (RIShiri Fall Experiment 2003) conducted in September 2003 at Rishiri Island (45.07 N,141.12 E,and 35m asl) in the Sea of Japan.The initial weight matrices and bias vectors for the network were optimized by a bee evolutionary genetic algorithm (BEGA).It was found that the input variables sensitive to HO 2 variation were photolysis frequency of O 3 to O(1 D) (J(O 1 D)),a composite parameter defined as the ratio of HC to NO x reactivity towards OH radicals (Φ),and the total aerosol surface area (A).The predicted results are closely correlated with the experimental data with the coefficient of determination (R2) close to 1.In addition,the means and ranges of the predicted HO 2 concentration agree with the observed data with the correlation coefficient (R),the index of agreement (IA) and the fractional bias (FB) in the range of 0.84-0.93,0.88-0.95 and 14%-7%,respectively.This study demonstrates that BPNN is a potential tool to predict the daytime variations of HO 2 radical concentrations in the marine boundary layer (MBL). | WANG ZhuQing,CHEN YaShao,QI Bin & YANG Bing Key laboratory of Applied Surface and Colloid Chemistry,Ministry of Education School of Chemistry and Material Science,Shaanxi Normal University,Xi’an 710062,China | 2010 | Science China Chemistry2010，53，12： | 4 |
| 2 | Hydrothermal growth of hydroxyapatite and ZnO bilayered nanoarrays on magnesium alloy surface with antibacterial activities显示文摘Magnesium alloy(MgA)has been extensively used as orthopedic and cardiovascular scaffolds in virtue of its good biocompatibility,unique biodegradability and excellent mechanical properties.However,poor corrosion resistance and easy infection after implantation seriously limit the potential applications of MgA in the biomedical field.Herein,we fabricated bilayered nanoarrays of hydroxyapatite nanorods(HANRs)and ZnO nanorods(ZnONRs)onto the surface of MgA(MgA-MgO-HANRs-ZnONRs)via micro-arc oxidation(MAO)treatment,microwave-assisted hydrothermal and hydrothermal methods.The morphology and chemical composition of MgA-MgO-HANRs-ZnONRs was characterized by FE-SEM,XRD and EDS,indicating that HANRs-ZnONRs bilayered nanoarrays were fabricated on the surface of MgA-MgO.The surface of MgA-MgO-HANRs-ZnONRs exhibited excellent hydrophilicity as evidenced by the low water contact angle of 3°.Compared with the original MgA,the corrosion resistance of MgA-MgO-HANRs-ZnONRs was obviously improved with decreasing the corrosive current density(icorr)of 2 orders of magnitude.The MgA-MgO-HANRs-ZnONRs performed excellent antibacterial properties with the bactericidal rate of 96.5%against S.aureus and 94.3%against E.coli. | Mengke Peng Fenyan Hu Minting Du Bingjie Mai Shurong Zheng Peng Liu Changhao Wang Yashao Chen | 2020 | Frontiers of Materials Science2020，14，1： | 3 |
| 3 | Surface modification of hydrophobic PMMA intraocular lens by the immobi- lization of hydroxycthyl methacrylate for improving application in ophthalmology显示文摘 | Wei Yanlin Ya Yashao Liu Peng | 2011 | Plasma Chemistry and Plasma Processing2011，31，： | 1 |
| 4 | Electrochemical treatment of petroleum refinery wastewater with three-dimensional multi-phase electrode显示文摘 | Long Yan Hongzhu Ma Bo Wang Yufei Wang Yashao Chen | 2011 | Desalination2011，，1： | 1 |
| 5 | Syntheis and characterization of porous chromia - pillared layered titanoniobate 显示文摘 | Yashao Chen Wenhua Hou Canxiong Guo | 1997 | J Chem Soc Dalton Trans1997，，： | 1 |
| 6 | Crystal morphology control of AlPO4-11 molecular sieves by microwave irradiation 显示文摘 | Chen Yashao Luo Xiaolin Chang Pengmei | 2009 | Materiials Chemis- try and Physics2009，113，： | 1 |
| 7 | Controlled synthesis of Nd(OH) 3 and Nd 2 O 3 nanoparticles by microemulsion method显示文摘 | Wenqing Zhu Jin Ma Lei Xu Wenzhao Zhang Yashao Chen | 2010 | Materials Chemistry and Physics2010，，： | 1 |
| 8 | Crystal Morphology Control of A1PO4-11 Molecular Sieves by Micro- wave Irradiation显示文摘 | Chen Yashao Luo Xiaolin Chang Pengmei | 2009 | Mater Chem Phys2009，113，8： | 1 |
| 9 | Surface per- formance and eytoeompatibility evaluation of acrylic aeid- mediatec carboxymethyl chitosan coating on poly (tet-rafluoroethylene-co-hexafluoropropylene) 显示文摘 | Yashao Chen Jinhong Yi Qiang Gao | 2013 | Chem Plas- ma Process2013，33，6： | 1 |
| 10 | Morphology con trol of silver nano-crystals through a polyol synthesis显示文摘 | Luo Xiaolin Chen Yashao Yang Desuo | 2011 | Solid State Sci2011，，13： | 1 |
| 11 | Feasibility of fly ash-based composite coagulant for coal washing wastewater treatment显示文摘 | Long Yan Yufei Wang Hongzhu Ma Zhiping Han Qiang Zhang Yashao Chen | 2011 | Journal of Hazardous Materials2011，，： | 1 |
| 12 | Chemistry of daytime HOx radicals in marine boundary layer in the sea of Japan:Based on the ratio between the reactivity of HC and NOx显示文摘The ratio between the reactivity of HC and NOx,i.e.,Φ=ΣkOH+HCi[HCi]/(kOH+NO[NO]+kOH+NO2[NO2]),is used to study the chemistry of HOx radicals (HO2 and OH) in the marine boundary layer (MBL).Data analysis shows that HOx production and OH/HO2 ratio strongly depend on Φ.The OH radical concentration presents an ascending tendency in low Φ region but a declining one in high Φ region,while HO2 radical increases with increasing Φ under low Φ conditions but appears to be nearly constant with the variation of Φ under high Φ conditions.The observed OH/HO2 ratio shows a continuous decrease with the increase of Φ.Model studies are conducted to illuminate the behavior of HOx radicals in different Φ regions,and the results represent general agreement with the observed variations of HOx radicals and can well explain the observed behavior of HOx radicals.This study demonstrates that Φ could be used as an efficient parameter to ascertain the behavior of HOx radicals in the clean marine boundary layer. | WANG ZhuQing ZHENG Yi YANG Bing CHEN YaShao QI Bin | 2012 | Science China Chemistry2012，55，3： | 0 |
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