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14篇 您的检索式:作者名="ZHOU Hongchun"
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1From concept to reality-A review to the primary test stand and its preliminary application in high energy density physics显示文摘Pulsed power technology,whereas the electrical energy stored in a relative long period is released in much shorter timescale,is an efficient method to create high energy density physics(HEDP)conditions in laboratory.Around the beginning of this century,China Academy of Engineering Physics(CAEP)began to build some experimental facilities for HEDP investigations,among which the Primary Test Stand(PTS),a multi-module pulsed power facility with a nominal current of 10 MA and a current rising time~90 ns,is an important achievement on the roadmap of the electro-magnetically driven inertial confinement fusion(ICF)researches.PTS is the first pulsed power facility beyond 10 TW in China.Therefore,all the technologies have to be demonstrated,and all the engineering issues have to be overcome.In this article,the research outline,key technologies and the preliminary HEDP experiments are reviewed.Prospects on HEDP research on PTS and pulsed power development for the next step are also discussed.Jianjun Deng Weiping Xie Shuping Feng Meng Wang Hongtao Li Shengyi Song Minghe Xia Ji Ce An He Qing Tian Yuanchao Gu Yongchao Guan Bin Wei Xianbin Huang Xiaodong Ren Jiakun Dan Jing Li Shaotong Zhou Hongchun Cai Siqun Zhang Kunlun Wang Qiang Xu Yujuan Wang Zhaohui Zhang Guilin Wang Shuai Guo Yi He Yiwei Zhou Zhanji Zhang Libing Yang Wenkang Zou 2016Matter and Radiation at Extremes2016,1,1:19
2Transportation characteristics of δ^(13)C in the plants-soil-bedrock-cave system in Chongqing karst area显示文摘Here we use an analytical method to determine δ13C in local plants and organic matter in the soils above Furong cave,Chongqing,China.We also monitored δ13C in dissolved inorganic carbon(DIC) of drip water,δ13C of active deposits under the drip waters,and the concentration of air CO2(PCO2).Based on these,we preliminarily studied the transportation characteristics of stable carbon isotope(13C) in cave system of the subtropical karst area.The average δ13C value of 27 local plant samples,which belong to 16 families,was -32‰ and the weighted δ13C for surface dry biomass was -33‰.We found that for 54 soil samples collected from 5 soil profiles,δ13C of soil organic matters was -22‰,which could be attributed to the different transportation rates of stable carbon isotopes during the decomposition of plants and organic matters in soils.The relatively lighter 12C tended to transfer into gaseous CO2,which made the relatively heavier 13C concentrated in the soils.On the basis of monitoring of DIC-δ13C in drip waters from July 2009 to June 2010,we found that values in winter months were heavier and values in summer months were lighter in general,the reason of which was that in summer months,both the temperature and the humidity were comparatively higher,resulted in more CO2 with lighter δ13C generated from organic matters decomposition and plants respiration.The average DIC -δ13C value was -11‰,about 11‰ heavier than the δ13C of organic matters in soils,which proved that part of DIC in cave drip water was sourced from dissolution of inorganic carbonate(host rock,with heavier δ13C).As for the δ13C of active deposits at five drip water sites in Furong cave,they had almost the same variation with relatively light values.In other words,these active speleothems were deposited at equilibrium conditions for isotopic fractionation.These results suggest that the carbon isotopic information of speleothems could be used to track the evolution of local vegetation in certain situations.Li TingYong Li HongChun Xiang XiaoJing Kuo Tz-Shing Li JunYun Zhou FuLi Chen HongLi Peng LingLi 2012Science China Earth Sciences2012,55,4:18
3Oil & Gas Drilling Technology in China:Past and Present显示文摘Drilling is a prerequisite for oil and gas exploration. As one of the core upstream business of oil and gas exploration and development, it mainly includesSu Yinao Huang Hongchun Zhou Yuhui Gao Wenkai Zeng Qiang 2009China Oil & Gas2009,16,4:9
4Cloning and functional characterization of Rht8,a“Green Revolution”replacement gene in wheat显示文摘Dear Editor,Wheat(Triticum aestivum)is a major staple crop in the world and provides~20%of the food calories for human consumption(Appels et al.,2018).During the 1960s and 1970s,the introduction of two semi-dwarfing genes Rht-B1b and Rht-D1b in wheat varieties strikingly improved lodging resistance and harvest index,and therefore substantially increased grain yield,resulting in the well-known'Green Revolution'(Peng et al.,1999).However,plants carrying Rht-B1b and Rht-D1b suffer from several drawbacks.Hongchun Xiong Chunyun Zhou Meiyu Fu Huijun Guo Yongdun Xie Linshu Zhao Jiayu Gu Shirong Zhao Yuping Ding Yuting Li Jiazi Zhang Ke Wang Xuejun Li Luxiang Liu 2022Molecular Plant2022,15,3:7
5Chromopeptide A, a highly cytotoxic depsipeptide from the marine sediment-derived bacterium Chromobacterium sp. HS-13-94显示文摘A bicyclic depsipeptide, chromopeptide A(1), was isolated from a deep-sea-derived bacterium Chromobacterium sp. HS-13-94. Its structure was determined by extensive spectroscopic analysis and by comparison with a related known compound. The absolute configuration of chromopeptide A was established by X-ray diffraction analysis employing graphite monochromated Mo K_α radiation(λ ? 0.71073 ?) with small Flack parameter 0.03. Chromopeptide A suppressed the proliferation of HL-60, K-562, and Ramos cells with average IC_(50) values of 7.7, 7.0, and 16.5 nmol/L, respectively.Zhenfang Zhou Xin Wang Hui Zhang Jingya Sun Linghui Zheng Hongchun Liu Jidong Wang Aijun Shen Meiyu Geng Yuewei Guo 2015Acta Pharmaceutica Sinica B2015,5,1:6
6A critical survey of technologies of large offshore wind farm integration: summary, advances, and perspectives显示文摘Offshore wind farms(OWFs)have received widespread attention for their abundant unexploited wind energy poten-tial and convenient locations conditions.They are rapidly developing towards having large capacity and being located further away from shore.It is thus necessary to explore effective power transmission technologies to connect large OWFs to onshore grids.At present,three types of power transmission technologies have been proposed for large OWF integration.They are:high voltage alternating current(HVAC)transmission,high voltage direct current(HVDC)transmission,and low-frequency alternating current(LFAC)or fractional frequency alternating current transmission.This work undertakes a comprehensive review of grid connection technologies for large OWF integration.Compared with previous reviews,a more exhaustive summary is provided to elaborate HVAC,LFAC,and five HVDC topologies,consisting of line-commutated converter HVDC,voltage source converter HVDC,hybrid-HVDC,diode rectifier-based HVDC,and all DC transmission systems.The fault ride-through technologies of the grid connection schemes are also presented in detail to provide research references and guidelines for researchers.In addition,a comprehensive evalu-ation of the seven grid connection technologies for large OWFs is proposed based on eight specific indicators.Finally,eight conclusions and six perspectives are outlined for future research in integrating large OWFs.Bo Yang Bingqiang Liu Hongyu Zhou Jingbo Wang Wei Yao Shaocong Wu Hongchun Shu Yaxing Ren 2022Protection and Control of Modern Power Systems2022,7,1:4
7Circular economy in China and recommendations显示文摘Zhou Hongchun* Development Research Center of the State Council, Beijing 100010, P.R.China Received Dec.31, 2005 Accepted Jan.31, 2006 2006Ecological Economy2006,2,2:3
8Transmission Probability Method Based on Triangle Meshes for Solving Unstructured Geometry Neutron- Transport Problem显示文摘Wu Hongchun Liu Pingping Zhou Yongqiang 2007Nucl Eng Des2007,237,1:1
9LAVENDER : A steady-state coreanalysis code for design studies of acceleratordriven subcritical reactors显示文摘ZHOU Shengcheng WU Hongchun CAO Liang-zhi 2014Nuclear Engineer-ing and Design2014,278,:1
10Sustainability: Key to West China DevelopmentZHOU Hongchun (Development Research Center of the State Council, Beijing 100010) 2000Natural Disaster Reduction in China2000,,4:0
11Surveillance system-based physician reporting of pneumonia of unknown etiology in China:A cross-sectional study显示文摘Objective:To describe the current reporting of pneumonia of unknown etiology(PUE)and factors that affect reporting by clinicians in China using the PUE surveillance system in order to provide a reference for improving PUE reporting rates in the future.Methods:Clinicians were recruited via the Sojump platform and requested to complete an anonymous self-administered questionnaire.Multivariate logistic regression analysis was used to assess factors influencing clinicians’reporting activities.Results:This study showed a low PUE case reporting rate and a poor understanding of PUE reporting among the investigated clinicians.Of the 136 clinicians who had diagnosed PUE cases,multivariate logistic regression analysis results showed that clinicians who had attended in-hospital training were more likely to report PUE than those who had not(OR 4.48,95%CI 1.49-13.46).Clinicians with an expert panel on PUE in their hospital were more likely to report PUE cases than those without(OR 5.46,95%CI 1.85-16.11).Conclusions:There is a need to promote and reinforce PUE surveillance system training among medical staff.In addition,PUE testing technologies in hospital laboratories should be upgraded,especially in primary and unclassified hospitals,to increase surveillance efficiency and improve PUE reporting rates.Hongchun Du Yajuan Zhu Yan Chen Shidan Zhou Jiani Tong Yingnan Deng Dingmei Zhang 2022Asian Pacific Journal of Tropical Medicine2022,15,4:0
12X-ray emission characteristics in magnetically driven plasma jet experiments on PTS facility显示文摘Jets are commonly observed astrophysical phenomena.To study the x-ray emission characteristics of jets,a series of radial foil Z-pinch experiments are carried out on the Primary Test Stand at the Institute of Fluid Physics,China Academy of Engineering Physics.In these experiments,x-ray emission ranging from the soft region(0.1–10 keV)to the hard region(10 keV–500 keV)is observed when the magnetic cavity breaks.The radiation flux of soft x-rays is measured by an x-ray diode and the dose rate of the hard x-rays by an Si-PIN detector.The experimental results indicate that the energy of the soft x-rays is several tens of kilojoules and that of the hard x-rays is∼200 J.The radiation mechanismof the x-ray emission is briefly analyzed.This analysis indicates that the x-ray energy and the plasma kinetic energy come from the magnetic energy when the magnetic cavity breaks.The soft x-rays are thought to be produced by bremsstrahlung of thermal electrons(∼100 eV),and the hard x-rays by bremsstrahlung of super-hot electrons(∼mega-electron-volt).These results may be helpful to explain the xray emission by the jets from young stellar objects.Qiang Xu Shaotong Zhou Kun-lun Wang Siqun Zhang Hongchun Cai Xiao Ren Pan Liu Xian bin Huang Li Zhao Wenkang Zou 2020Matter and Radiation at Extremes2020,5,1:0
13Age dating of lacustrine sediments in Lake Tianshuihai of the Tibetan Plateau by using U-series isochron method and its significance显示文摘The age of the clastic-clay sediments with varied content of carbonate in core TS95 taken from the Lake Tianshuihai in the northwest of the Tibetan Plateau was determined successfully by using the total sample dissolution U-series isochron method for the first time. With this method, the serial absolute timescale (isotope time scale) covered the last 240 ka in the main body of the Tibetan Plateau with a sea level up to 4000 m is also established for the first time, thereby laying the foundation for the research on the paleo-climate and palaeoenvironment in the Lake Tianshuihai region as well as the relationship between evolution of the Tibetan Plateau and global changes. In addition to a brief introduction of the basic principles, the procedures of experiments, and the results, this note also presents the adaptability and superiority of this method as well as its possible problems.ZHU Zhaoyu KU Teh-Lung LUO Shangde ZHOU Houyun WEN Qizhong LI Shijie LI Bingyuan LI Hongchun 2001Chinese Science Bulletin2001,46,10:0
14Examination on the Ecological Civilization Governance System and Capacity With the Case of COVID-19 Pandemic: Review and Improvement显示文摘The COVID-19 disease broke out globally,bringing great challenges to public health security and increasing the difficulties in constructing ecological civilization governance system.Under the leadership of the Central Committee of the Communist Party of China with Comrade Xi Jinping at its core,the Chinese Government and people have fought against the disease with courage and put people’s health and safety first.Through hard work,China has made achievements in controlling the COVID-19 pandemic and accelerated the restoring of work and life back to normalcy.While continuing to control the pandemic domestically,China promotes the building of a human community with shared destiny,and plays an active role in promoting global cooperation in public health,contributing extraordinarily to global public health and world economy.Guided by Xi Jinping’s Thought of Ecological Civilization,China has endeavored for modernization characterized by harmonious coexistence between man and nature.In response to the current crisis in public health and the challenges facing human–nature harmony thus incurred,the Editorial Department of Chinese Journal of Urban and Environmental Studies has co-hosted a seminar with CASS Thinktank for Eco-civilization Studies,aiming at brainstorming on and enhancing faith in continuing the building of an ecological civilization after completing the construction of a moderately well-off society in all respects.This paper intends to call for other countries to exchange and cooperate in building ecological civilization and building the world into a beautiful home for all.PAN Jiahua ZOU Ji WANG Tongsan LI Hongwei QIN Zunwen WU Shunze YE Jiang YE Qian ZHANG Yongsheng ZHOU Hongchun ZHUANG Guiyang 2020Chinese Journal of Urban and Environmental Studies2020,8,3:0
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