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Stress distribution variations during nanoindentation failure of hard coatings on silicon substrates: 《Nanotechnology and Precision Engineering》2023年第4期1-10,共10页Ritambhara Dash Kushal Bhattacharyya Arnab S.Bhattacharyya; Regarding quality inspection of technologically important nanocomposite hard coatings based on Ti,B,Si,C,and N and bioceramics such as hydroxyapatite that are used in small-scale high-precision devices and bio-implant...; 关键词：NANOINDENTATION Hard film Finite-element analysis(FEA) Cracking mechanism STRESS

Variations in surface functional groups, carbon chemical state and graphitization degree during thermal deactivation of diesel soot particles被引量：2: 《Journal of Environmental Sciences》2023年第2期678-687,共10页Ye Liu Sijin Wu Chenyang Fan Xin Wang Fangjie Liu Haibo Chen; supported by the National Natural Science Foundation of China (No.52006054);the State Key Laboratory of Engines at Tianjin University (No.K2021-05);the European Union’s projects MODALES (No.815189);nPETS (No.954377); The thermal deactivation of diesel soot particles exerts a significant influence on the control strategy for the regeneration of diesel particulate filters(DPFs).This work focused on the changes in the surface functio...; 关键词：Diesel soot particles Surface functional groups Carbon chemical state Graphitization degree Thermal deactivation

Rural vehicle emission as an important driver for the variations of summertime tropospheric ozone in the Beijing-Tianjin-Hebei region during 2014-2019被引量：3: 《Journal of Environmental Sciences》2022年第4期126-135,共10页Yifei Song Yuanyuan Zhang Junfeng Liu Chenglong Zhang Chengtang Liu Pengfei Liu Yujing Mu; supported by the National Natural Science Foundation of China(Nos.41975164,41727805,41931287,21976190,22076202,21876186,and 41905109); Tropospheric ozone(O_(3))pollution is increasing in the Beijing-Tianjin-Hebei(BTH)region despite a significant decline in atmospheric fine aerosol particles(PM_(2.5))in recent years.However,the intrinsic reason for th...; 关键词：Tropospheric ozone The Beijing-Tianjin-Hebei region Spatio-temporal trends Rural vehicle emission

Characteristics and Cause Analysis of Variations in Light Precipitation Events in the Central and Eastern Tibetan Plateau,China,During 1961–2019: 《Chinese Geographical Science》2022年第1期155-173,共19页LI Kaifang CAO Liguo ZHOU Zhengchao JIAO Lei WANG Ning LIU Ruohan; Under the auspices of the Second Tibetan Plateau Scientific Expedition and Research Program(STEP)(No.2019QZKK040);Key Technologies Research and Development Program of Shaanxi Province(No.2021ZDLSF05-02);The National Natural Science Foundation of China(No.42072208,42101100,41901129);The Fundamental Research Funds for the Central Universities(No.GK202001003);Natural Science Foundation of Shaanxi Province(No.2021JQ-313)。; The Tibetan Plateau(TP)is one of the most sensitive areas and is more susceptible to climate change than other regions in China.The TP also experiences extremely frequent light precipitation events compared to precipi...; 关键词：light precipitation events spatio-temporal variation period analysis Tibetan Plateau

Surface ozone variations at the Great Wall Station,Antarctica during austral summer: 《Advances in Polar Science》2020年第2期92-102,共11页Justin SENTIAN Franky HERMAN Mohd Sharul MOHD NADZIR Vivian Kong WAN YEE; funded by the Sultan Mizan Antarctic Research Foundation(YPASM,2017)Malaysia;supported by the Chinese Arctic and Antarctic Administration(CAA);support by Universiti Malaysia Sabah(UMS)。; Surface ozone(O3)is a secondary pollutant harmful to human health and a greenhouse gas which is one of the prime climate forcers.Due to the clean atmospheric environment of the Antarctic region and given the complexit...; 关键词：surface ozone Great wall Station austral summer HYSPLIT

Multi-scale temperature variations and their regional differences in China during the Medieval Climate Anomaly被引量：1: 《Journal of Geographical Sciences》2020年第1期119-130,共12页HAO Zhixin WU Maowei LIU Yang ZHANG Xuezhen ZHENG Jingyun; National Key R&D Program of China,No.2017YFA0603300;National Natural Science Foundation of China,No.41671036,No.41831174;The Strategic Priority Research Program of the Chinese Academy of Sciences,No.XDA 19040101。; The Medieval Climate Anomaly(MCA,AD950-1250)is the most recent warm period lasting for several hundred years and is regarded as a reference scenario when studying the impact of and adaptation to global and regional wa...; 关键词：China multi-scale variations TEMPERATURE Medieval Climate Anomaly

Variations of Frost-free Period and Its Impact on Grain Yields in Henan Province during 1961-2013被引量：4: 《Agricultural Science & Technology》2015年第8期1588-1591,1692,共5页闫军辉傅辉周红升徐新创; Funded by"Strategic Priority Research Program"of the Chinese Academy of Sciences(XDA05090101,XDA05090104);China Global Change Research Program(2010CB950101,2012CB955403);Basic Research Project of the Ministry of Science and Technology(2011FY120300);Doctor Foundation of Xinyang Normal University(0201403);National Natural Science Foundation of China(41271124,41101549)~~; The aim of this study was to investigate the responses of frost dates to global warming and its influences on grain yields. In this study, based on the frost date series defined by daily minimum ground temperature, th...; 关键词：Daily minimum ground temperature Frost-free period Grain yield Henan province 1961-2013

Experimental investigations of transient pressure variations in a high head model Francis turbine during start-up and shutdown被引量：5: 《Journal of Hydrodynamics》2014年第2期277-290,共14页TRIVEDI Chirag CERVANTES Michel J. GANDHI B.K. OLE DAHLHAUG G.; the Swedish Waterpower Centre(SVC)for the financial support.SVC has been established by the Swedish Energy Agency,Elforsk and SvenskaKraftnat together with LuleUniversity of Technology,the Royal Institute of Technology,Chalmers University of Technology and Uppsala University(www.svc.nu); Penetration of the power generated using wind and solar energy to electrical grid network causing several incidents of the grid tripping, power outage, and frequency drooping. This has increased restart （star-stop） ...; 关键词：Francis turbine pressure fluctuations START-UP SHUTDOWN TRANSIENT

Nutrient concentration variations during Oenanthe javanica growth and decay in the ecological floating bed system被引量：31: 《Journal of Environmental Sciences》2010年第11期1710-1717,共8页Xiaohong Zhou Guoxiang Wang; supported by the National Natural Science Foundation of China(No.40873057);the Special of Science and Technology Innovation and Achievement Transformation of Jiangsu,China(No.BE2008677);the Natural Science Foundation for the Colleges and Universities in Jiangsu Province(No.10KJB610001);the Scientific Research Foundation for the Talents in Jiangsu University(No.09JDG050); The ecological floating bed system is a natural alternative to technical methods of wastewater treatment and involves complex processes induced by plants or microorganisms in the wastewater. This study aimed to identi...; 关键词：Oenanthe javanica ecological floating bed PURIFICATION DECAY polluted water

Variations in Reproductive Hormones during Estrus Cycle in Local Beef Cattle from Jilin of China: 《Animal Husbandry and Feed Science》2010年第4期14-17,共4页LI Cheng-jiao WANG Hong-juan LI Chun-jin ZHOU Xu; supported by the grants from National Key Technology R&D Program (2007BAD55B03-09); [ Objective] To provide a theoretical basis for improving reproductive efficiency of domestic beef cattle in Jilin of China. [ Method] China Red Steppe cattle, Yanbian yellow cattle and Simmental cattle in Jilin Provi...; 关键词：Reproductive hormones Estrus cycle Beef cattle

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