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Analysis of air quality variability in Shanghai using AOD and API data in the recent decade

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Frontiers of Earth Science 2013年第2期7卷 159-168页

作者： Qing zHAO Wei GAO Weining XIANG Runhe shi Chaoshun LIU Tianyong zHAI Hung-lung Allen HUANG Liam E. GUmLEY Kathleen STRABALA Key Laboratory of Geographic Information Science (ministry of Education) East China Normal University Shanghai 200062 China Joint Laboratory for Environmental Remote Sensing and Data Assimilation ECNU&CEODE Colorado State University Shanghai 200062 China Colorado State University Natural Resource Ecology Laboratory Fort Collins Colorado 80521 USA Shanghai Key Laboratory for Urban Ecology and Sustainability East China Normal University Shanghai 200062 China University of Wisconsin-madison Cooperative Institute for Meteorological Satellite Studies (CIMSS) Madison Wisconsin 53706 USA

We use the aerosol optical depth （AOD） measured by the moderate resolution imaging spectrometer （mOD1S） onboard the Terra satellite, air pollution index （API） daily data measured by the Shanghai Environmental monitoring Center （SEmC）, and the ensemble empirical mode decomposition （EEmD） method to analyze the air quality variability in Shanghai in the recent decade. The results indicate that a trend with amplitude of 1.0 is a dominant component for the AOD variability in the recent decade. During the World Expo 2010, the average AOD level reduced 30% in comparison to the long-term trend. Two dominant annual components decreased 80% and 100%. This implies that the air quality in Shanghai was remarkably improved, and environmental initiatives and comprehensive actions for effective. AOD and API reducing air pollution are variability analysis results indicate that semi-annual and annual signals are dominant components implying that the monsoon weather is a dominant factor in modulating the AOD and API variability. The variability of AOD and API in selected districts located in both downtown and suburban areas shows similar trends; i.e., in 2000 the AOD began a monotonic increase, reached the maxima around 2006, then monotonically decreased to 2011 and from around 2006 the API started to decrease till 2011. This indicates that the air quality in the entire Shanghai area, whether urban or suburban areas, has remarkably been improved. The AOD improved degrees （IDS） in all the selected districts are （8.6±1.9）%, and API IDS are （9.2±7.1）%, ranging from a minimum value of 1.5% for Putuo District to a maximum value of 22% for Xuhui District.

关键词： air quality of Shanghai mODIS AOD API EEmD method World Expo 2010

一种整体壁板填料辅助滚弯成形过程中填料作用机理

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Transactions of Nonferrous metals Society of China 2023年第8期33卷 2314-2327页

作者：李瀚伟宋鸿武张士宏万里贾春莉柴雪婷张国威 Lucian LĂzĂRESCU Dorel BANABIC 中国科学院金属研究所师昌绪先进材料创新中心沈阳110016 中国科学技术大学材料科学与工程学院沈阳110016 首都航天机械有限公司北京100076 Department of manufacturing Engineering Technical University of Cluj-NapocaCluj-Napoca 400641Romania

研究一种2A12铝合金整体壁板的聚丙烯填料辅助滚弯成形工艺,结合力学分析、数值模拟和实验验证,揭示填料的作用机理。结果表明,整体壁板筋条与蒙皮处的中性层位置差导致其成形后母线直线度不达标,填料可以降低这种中性层位置差。当填料... 详细信息

研究一种2A12铝合金整体壁板的聚丙烯填料辅助滚弯成形工艺,结合力学分析、数值模拟和实验验证,揭示填料的作用机理。结果表明,整体壁板筋条与蒙皮处的中性层位置差导致其成形后母线直线度不达标,填料可以降低这种中性层位置差。当填料与筋条有一定宽度间隙(1~3 mm)时,可以避免填料卷曲和筋条失稳。而填料和筋条的高度间隙决定填料可被压缩程度,当填料在压缩后仍高于筋条(1 mm)时,可以达到最佳的压力传递效果。填料的弹性模量在一定范围内时(450~1300 mPa),对整体壁板的成形精度影响不大。但填料弹性模量较低时(50 mPa),填料传递的压力不足;填料弹性模量较高时(20 GPa),整体壁板弯曲变形受限。实验后壁板母线直线度的测量结果验证了填料的作用机理。

关键词：整体壁板滚弯成形填料中性层母线直线度

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STCF conceptual design report (Volume 1): Physics & detector

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Frontiers of physics 2024年第1期19卷 1-154页

作者： m.Achasov X.C.Ai L.P.An R.Aliberti Q.An X.z.Bai Y.Bai O.Bakina A.Barnyakov V.Blinov V.Bobrovnikov D.Bodrov A.Bogomyagkov A.Bondar I.Boyko z.H.Bu F.m.Cai H.Cai J.J.Cao Q.H.Cao X.Cao z.Cao Q.Chang K.T.Chao D.Y.Chen H.Chen H.X.Chen J.F.Chen K.Chen L.L.Chen P.Chen S.L.Chen S.m.Chen S.Chen S.P.Chen W.Chen X.Chen X.F.Chen X.R.Chen Y.Chen Y.Q.Chen H.Y.Cheng J.Cheng S.Cheng T.G.Cheng J.P.Dai L.Y.Dai X.C.Dai D.Dedovich A.Denig I.Denisenko J.m.Dias D.z.Ding L.Y.Dong W.H.Dong V.Druzhinin D.S.Du Y.J.Du z.G.Du L.m.Duan D.Epifanov Y.L.Fan S.S.Fang z.J.Fang G.Fedotovich C.Q.Feng X.Feng Y.T.Feng J.L.Fu J.Gao Y.N.Gao P.S.Ge C.Q.Geng L.S.Geng A.Gilman L.Gong T.Gong B.Gou W.Gradl J.L.Gu A.Guevara L.C.Gui A.Q.Guo F.K.Guo J.C.Guo J.Guo Y.P.Guo z.H.Guo A.Guskov K.L.Han L.Han m.Han X.Q.Hao J.B.He S.Q.He X.G.He Y.L.He z.B.He z.X.Heng B.L.Hou T.J.Hou Y.R.Hou C.Y.Hu H.m.Hu K.Hu R.J.Hu W.H.Hu X.H.Hu Y.C.Hu J.Hua G.S.Huang J.S.Huang m.Huang Q.Y.Huang W.Q.Huang X.T.Huang X.J.Huang Y.B.Huang Y.S.Huang N.Hüsken V.Ivanov Q.P.Ji J.J.Jia S.Jia z.K.Jia H.B.Jiang J.Jiang S.z.Jiang J.B.Jiao z.Jiao H.J.Jing X.L.Kang X.S.Kang B.C.Ke m.Kenzie A.Khoukaz I.Koop E.Kravchenko A.Kuzmin Y.Lei E.Levichev C.H.Li C.Li D.Y.Li F.Li G.Li G.Li H.B.Li H.Li H.N.Li H.J.Li H.L.Li J.m.Li J.Li L.Li L.Li L.Y.Li N.Li P.R.Li R.H.Li S.Li T.Li W.J.Li X.Li X.H.Li X.Q.Li X.H.Li Y.Li Y.Y.Li z.J.Li H.Liang J.H.Liang Y.T.Liang G.R.Liao L.z.Liao Y.Liao C.X.Lin D.X.Lin X.S.Lin B.J.Liu C.W.Liu D.Liu F.Liu G.m.Liu H.B.Liu J.Liu J.J.Liu J.B.Liu K.Liu K.Y.Liu K.Liu L.Liu Q.Liu S.B.Liu T.Liu X.Liu Y.W.Liu Y.Liu Y.L.Liu z.Q.Liu z.Y.Liu z.W.Liu I.Logashenko Y.Long C.G.Lu J.X.Lu N.Lu Q.F.Lü Y.Lu Y.Lu z.Lu P.Lukin F.J.Luo T.Luo X.F.Luo Y.H.Luo H.J.Lyu X.R.Lyu J.P.ma P.ma Y.ma Y.m.ma F.maas S.malde D.matvienko z.X.meng R.mitchell A.Nefediev Y.Nefedov S.L.Olsen Q.Ouyang P.Pakhlov G.Pakhlova X.Pan Y.Pan E.Passemar Y.P.Pei H.P.Peng L.Peng X.Y.Peng X.J.Peng K.Peters S.Pivovarov E.Pyata B.B.Qi Y.Q.Qi W.B.Qian Y.Qian C.F.Qiao J.J.Qin J.J.Qin L.Q.Qin X.S.Qin T.L.Qiu J.Rademacker C.F.Redmer H.Y.Sang Anhui University Hefei 230039China Beihang University Beijing 100191China Budker Institute of Nuclear Physics Novosibirsk 630090Russia CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Cavendish Laboratory University of CambridgeJJ Thomson AveCambridge CB30HEUnited Kingdom Central China Normal University Wuhan 430079China Central South University Changsha 410083China China University of Geosciences Wuhan 430074China China University of mining and Technology Xuzhou 221116China École Polytechnique Fédérale de Lausanne(EPFL) LausanneSwitzerland Fudan University Shanghai 200433China Goethe University Frankfurt D-60325 Frankfurt am MainGermany Guangxi Normal University Guilin 541004China Guangxi Uninversity Nanning 530004China Hangzhou Institute for Advanced Study UCASHangzhou 310024China Hebei Normal University Shijiazhuang 050024China Hebei University Baoding 071002China Hefei University of Technology Hefei 230601China Helmholtz Institute mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University Kaifeng 475004China High Energy Physics Center Chung-Ang UniversitySeoul 06974Korea Higher School of Economy 11 Pokrovsky Bulvar Moscow 109028Russia Huangshan University Huangshan 245000China Hubei University of Automotive Technology Shiyan 442002China Hunan Normal University Changsha 410081China Hunan University of Science and Technology Xiangtan 411201China Hunan University Changsha 410082China Indiana University BloomingtonIndiana 47405USA Inner mongolia University Hohhot 010021China Institute of Advanced Science Facilities Shenzhen 518107China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Institute of modern Physics Chinese Academy of SciencesLanzhou 730000China Institute of Physics Academia SinicaTaipeiTaiwan 11529China Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190China Jilin University Changch

The superτ-charm facility(STCF)is an electron–positron collider proposed by the Chinese particle physics *** is designed to operate in a center-of-mass energy range from 2 to 7 GeV with a peak luminosity of 0.5×10^(35) cm^(–2)·s^(–1) or *** STCF will produce a data sample about a factor of 100 larger than that of the presentτ-charm factory—the BEPCII,providing a unique platform for exploring the asymmetry of matter-antimatter(charge-parity violation),in-depth studies of the internal structure of hadrons and the nature of non-perturbative strong interactions,as well as searching for exotic hadrons and physics beyond the Standard *** STCF project in China is under development with an extensive R&D *** document presents the physics opportunities at the STCF,describes conceptual designs of the STCF detector system,and discusses future plans for detector R&D and physics case studies.

关键词： electron–positron collider tau-charm region high luminosity STCF detector conceptual design

Numerical simulation and experimental validation on fabrication of nickel-based superalloy Kagome lattice sandwich structures

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China Foundry 2020年第1期17卷 21-28页

作者： Yan-peng Wei Bo Yu Quan-zhan Yang Peng Gao Jian shi zhi-quan miao Jing-chang Cheng Xun Sun Shenyang Research Institute of Foundry Co.Ltd. Shenyang 110022China State Key Laboratory of Light Alloy Casting Technology for High-end Equipment Shenyang 110022China

Nickel-based superalloy lattice sandwich structures present higher stiffness,higher strength and higher temperature resistance in comparison with other *** this study,the Kagome unit was adopted to design the lattice sandwich structure and ProCAST software was used to simulate the filling and solidification processes of the nickel-based *** morphology and sizes of the nickel-based superalloy lattice sandwich structures were simulated by using of cellular automaton coupled with finite element model(CAFE),and indirect additive manufacture combining with investment casting were carried out to fabricate the nickel-based superalloy lattice sandwich *** calculated grain morphology and sizes are in good agreement with the experimental *** grains are mainly equiaxed with an average size of about 500µ*** simulated results also show that the superheat of melting and the mold preheated temperature have significant influence on the grain size of the Kagome lattice sandwich structures,lower superheat of melting and mold preheated temperatures are encouraged to obtain the fine grains while assuring the integrity of the Kagome lattice sandwich structures for industrial application.

关键词： Kagome unit cell lattice structure fabrication grain morphology and size CAFE model

Competing reduction induced homogeneous oxygen doping to unlock moS_(2)basal planes for faster polysulfides conversion

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Journal of Energy Chemistry 2022年第10期31卷 26-34,I0002页

作者： Da Lei Wenzhe Shang Xu zhang Yongpeng Li Xiaoshan shi Shaoming Qiao Qian Wang Qiang zhang Ce Hao Hui Xu Guohua Chen Gaohong He Fengxiang zhang State Key Laboratory of Fine Chemicals Dalian University of TechnologyDalian 116024LiaoningChina School of Chemical Engineering Dalian University of TechnologyPanjin 124221LiaoningChina Shenzhen ApogeeTec Greenergy Co.Ltd. Shenzhen 518000GuangdongChina Department of mechanical Engineering Research Institute for Smart EnergyThe Hong Kong Polytechnic UniversityKowloonHong Kong 999077China

The parasitic polysulfides shuttle effect greatly hinders the practical application of lithium sulfur batteries,and this issue can be addressed by promoting polysulfides conversion with catalytic materials such as mo S_(2).However,the catalytic activity of mo S_(2)mainly relies on edge sites,but is limited by inert basal *** herein report a novel,facile,ethylene glycol enabled competing reduction strategy to dope mo S_(2)homogeneously with oxygen atoms so that its inert basal planes can be *** glycol works as a reducing agent and competes with thiourea to react with ammonium molybdate,leading to insufficient sulfuration of mo,and consequent formation of O-mo S_(2).Our theoretical and experimental investigations indicate that the homogeneously distributed O dopants can create abundant adsorption/-catalytic sites in the mo S_(2)basal planes,enlarge the inter-plane distance to promote ion transport,and thus enhance the catalytic conversion of *** oxygen doped mo S_(2)(O-mo S_(2))is supported on carbon nanosheets(CNS)and the composite(O-mo S_(2)/CNS)is employed to modify the separator of Li-S *** gives the battery an initial discharge capacity of 1537 m Ah g-1at 0.2 C,and the battery retains a discharge capacity of 545 m Ah g-1after ultra-long 2000 cycles at 1 C,corresponding to a very small cyclic decay rate of 0.0237%.Even under a raising sulfur loading of 8.2 mg cm^(-2),the Li-S battery also delivers a high discharge capacity(554 m Ah g^(-1))with outstanding cycle stability(84.6%capacity retention)after 100 cycles at 0.5 *** work provides a novel,facile approach to fabricate highly catalytically active oxygen-doped mo S_(2)for advanced Li-S batteries.

关键词： Competing reduction One-pot Oxygen-doped moS_(2) Unlocked basal plane Li-S batteries

Transconjugation and genotyping of the plasmid-mediated AmpC β-lactamase and extended-spectrum β-lactamase genes in Klebsiella pneumoniae

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Chinese medical Journal 2009年第9期122卷 1092-1096页

作者： shi Wei-feng zHOU Jun QIN Jian-ping Department of Clinical Laboratory Third Affiliated Hospital ofSuzhou University Changzhou Jiangsu 213003 China Department of Respiratory medicine Third Affiliated Hospital ofSuzhou University Changzhou Jiangsu 213003 China Department of Clinical Laboratory Changzhou Traditional ChineseMedicine Hospital Changzhou Jiangsu 213003 China

Bsckgroud AmpC β-lactamases and extended-spectrum β-lactamases （ESBLs） are becoming predominant causes of resistance to third and forth-generation cephalosporins in Klebsiella pneumoniae （K. pneumoniae）. It is very difficult to treat infectious diseases caused by multidrug-resistant K. pneumoniae. The purpose of the present study was to investigate transconjugation and characteristics of β-lactamase genes in K. pneumoniae producing AmpC β-lactamases and ESBLs. methods AmpC β-lactamases were detected by three-dimension test and ESBLs by disc confirmatory test. minimum inhibitory concentrations （mICs） were determined by agar dilution. Transfer of resistance to EC600 （Rifr） was attempted by conjugation in broth and screened on agar containing cefotaxime （2 μg/ml） plus rifampin （1024 μg/ml）. The genes encoding AmpC or ESBLs and their transconjugants were detected by PCR and verified by DNA sequencing. Results The resistant rates to ampicillin and piperacillin were 100% in 18 isolates of K. pneumoniae. However, imipenem was still of great bactericidal activity on K. pneumoniae, and its mIC50 was 0.5 μg/mL. Eleven β-lactamase genes, including TEm-1, TEm-11, SHV-13, SHV-28, CTX-m-9, CTX-m-22, CTX-m-55, OXA-1, LEN, OKP-6 and DHA-1, were found from 18 isolates. And at least one β-lactamase gene occurred in each isolate. To our surprise, there were six β-lactamase genes in the Cz04 strain. Among 18 isolates of K. pneumoniae, the partial resistant genes in 8 isolates were conjugated successfully, which had 100% homological sequence with donors by sequence analysis. Compared with donors, 8 transconjugants had attained resistance to most β-lactams, including ampicillin, piperacillin, cefoxitin, cefotaxime and aztreonam, or even amikacin and gentamicin. Conclusions R plasmids can be easily transferred between the resistant and sensitive negative bacilli. It is very difficult to block and prevent the spread of antimicrobial resistance. So more attention should be paid to red

关键词： Klebsiella pneumoniae plasmid transconjugation β-lactamase

Potential therapeutic strategies for mASH: from preclinical to clinical development

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Life metabolism 2024年第5期3卷 45-60页

作者： zhifu Xie Yufeng Li Long Cheng Yidan Huang Wanglin Rao Honglu shi Jingya Li State Key Laboratory of Drug Research Shanghai Institute of Materia MedicaChinese Academy of SciencesShanghai 201203China University of Chinese Academy of Sciences Beijing 100049China School of Pharmaceutical Science and Technology Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhouZhejiang 310024China

Current treatment paradigms for metabolic dysfunction-associated steatohepatitis(mASH)are based primarily on dietary restrictions and the use of existing drugs,including anti-diabetic and anti-obesity *** the limited number of approved drugs specifically for mASH,recent efforts have focused on promising strategies that specifically target hepatic lipid metabolism,inflamma-tion,fibrosis,or a combination of these *** this review,we examined the pathophysiology underlying the development of mASH in relation to recent advances in effective mASH ***,we analyzed the effects of lipogenesis inhibitors,nuclear receptor agonists,glucagon-like peptide-1(GLP-1)receptor(GLP-1R)agonists,fibroblast growth factor mimetics,and combinatorial therapeutic *** summarize these targets along with their preclinical and clinical candidates with the ultimate goal of optimizing the therapeutic prospects for mASH.

关键词： steatosis inflammation fibrosis metabolic dysfunction-associated steatohepatitis pharmacotherapy

联合风险投资策略对创业企业价值创造影响的实证研究

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预测 2018年第2期37卷 56-62页

作者：刘通曲世友 Christopher m.Scherpereel 哈尔滨工业大学管理学院黑龙江哈尔滨150001 北亚利桑那大学弗兰克商学院亚利桑那州弗拉格斯塔夫86001

本文研究联合风险投资策略对创业企业价值创造的影响。基于中美两国风险投资行业相关数据,在实证上运用倾向得分匹配方法(PSm)考察联合投资与单独投资两种策略对于创业企业价值创造的影响。结果显示:美国联合投资支持的创业企业在偿债... 详细信息

本文研究联合风险投资策略对创业企业价值创造的影响。基于中美两国风险投资行业相关数据,在实证上运用倾向得分匹配方法(PSm)考察联合投资与单独投资两种策略对于创业企业价值创造的影响。结果显示:美国联合投资支持的创业企业在偿债能力、成长能力、盈利能力及营运能力方面的表现优于单独投资支持的创业企业,中国联合投资支持的创业企业在偿债能力、成长能力、盈利能力方面的表现优于单独投资支持的创业企业,但在营运能力方面的差异并不显著。研究表明,与单独投资相比,联合投资能够更好地促进创业企业的价值创造;能够通过信息交换和知识互补为创业企业提供丰富的资源和信息,通过提供非资本增值服务促进创业企业价值创造的实现。

关键词：联合风险投资创业企业价值创造倾向得分匹配

Tailoring the meso-Structure of Gold Nanoparticles in Keratin-Based Activated Carbon Toward High-Performance Flexible Sensor

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Nano-micro Letters 2020年第9期12卷 136-146页

作者： Aniruddha BPatil zhaohui meng Ronghui Wu Liyun ma zijie Xu Chenyang shi Wu Qiu Qiang Liu Yifan zhang Youhui Lin Naibo Lin Xiang Yang Liu Research Institute for Soft matter and Biomimetics Fujian Provincial Key Laboratory for Soft Functional Materials ResearchDepartment of PhysicsCollege of MaterialsXiamen UniversityXiamen 361005People’s Republic of China Department of Chemistry M.D.CollegeParelMumbai 400012India Department of Physics National University of Singapore2 Science Drive 3Singapore 117542Singapore

Flexible biosensors with high accuracy and reliable operation in detecting pH and uric acid levels in body fluids are fabricated using well-engineered metaldoped porous carbon as electrode *** gold nanoparticles@N-doped carbon in situ are prepared using wool keratin as both a novel carbon precursor and a *** conducting electrode material is fabricated at 500℃ under customized parameters,which mimics A-B type(two different repeating units) polymeric material and displays excellent deprotonation performance(pH sensitivity).The obtained pH sensor exhibits high pH sensitivity of 57 mV/pH unit and insignificant relative standard deviation of 0.088%.Conversely,the composite carbon material with sp^2 structure prepared at 700℃ is doped with nitrogen and gold nanoparticles,which exhibits good conductivity and electrocatalytic activity for uric acid *** uric acid sensor has linear response over a range of 1-150 μm and a limit of detection 0.1 μ*** results will provide new avenues where biological material will be the best start,which can be useful to target contradictory applications through molecular engineering at mesoscale.

关键词： Wool keratin Structure engineering metal nanoparticle carbon composite Health monitoring Flexible biosensor