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39篇 您的检索式:作者名="Jinping Han"
    题名 作者 年代 出处 被引量
1Huangjing(Polygonati rhizoma)is an emerging crop with great potential to fight chronic and hidden hunger显示文摘According to an annual flagship report produced jointly by the FAO and several other organizations,almost 690 million people,or 8.9 percent of the world’s population,were still suffering from chronic hunger in 2019(FAO et al.,2020).Donghong Chen Zhigang Han Jinping Si 2021Science China(Life Sciences)2021,64,9:10
2Evolution of Jobs-housing Spatial Relationship in Beijing Metropolitan Area:A Job Accessibility Perspective显示文摘With the urban expansion and economic restructuring, the jobs-housing relationship has become an important issue in studies on urban spatial structure. This paper employed a job accessibility model, which is an evaluation instrument to measure the jobs-housing relationship in Beijing Metropolitan Area from a job accessibility perspective. The results indicate that the population in the central city is declining, whereas the population in the suburbs is consistently growing and forming new population centers. However, the distribution pattern of employment is still highly centralized. Job accessibility varies in different locations, but the inner-city areas(within the Third Ring road) have seen improved job accessibility over time while job accessibility in the suburbs(especially outside the Fourth Ring road) has decreased, and this has led it to become a primary area of residential and employment mismatch. At the same time, the new towns in the outer suburbs have not yet demonstrated great potential to attract more jobs. In addition we find that, to some extent, urban planning changes the jobs-housing relationship, but a polycentric urban spatial structure is not yet evident. The floating population and related housing policy also affect the jobs-housing relationship. We propose some measures to resolve the spatial mismatch as well as some future research directions.HAN Huiran YANG Chengfeng WANG Enru SONG Jinping ZHANG Meng 2015Chinese Geographical Science2015,25,3:9
3Study on the Improvement of the Application of Complete Ensemble Empirical Mode Decomposition with Adaptive Noise in Hydrology Based on RBFNN Data Extension Technology显示文摘The complex nonlinear and non-stationary features exhibited in hydrologic sequences make hydrological analysis and forecasting difficult.Currently,some hydrologists employ the complete ensemble empirical mode decomposition with adaptive noise(CEEMDAN)method,a new time-frequency analysis method based on the empirical mode decomposition(EMD)algorithm,to decompose non-stationary raw data in order to obtain relatively stationary components for further study.However,the endpoint effect in CEEMDAN is often neglected,which can lead to decomposition errors that reduce the accuracy of the research results.In this study,we processed an original runoff sequence using the radial basis function neural network(RBFNN)technique to obtain the extension sequence before utilizing CEEMDAN decomposition.Then,we compared the decomposition results of the original sequence,RBFNN extension sequence,and standard sequence to investigate the influence of the endpoint effect and RBFNN extension on the CEEMDAN method.The results indicated that the RBFNN extension technique effectively reduced the error of medium and low frequency components caused by the endpoint effect.At both ends of the components,the extension sequence more accurately reflected the true fluctuation characteristics and variation trends.These advances are of great significance to the subsequent study of hydrology.Therefore,the CEEMDAN method,combined with an appropriate extension of the original runoff series,can more precisely determine multi-time scale characteristics,and provide a credible basis for the analysis of hydrologic time series and hydrological forecasting.Jinping Zhang Youlai Jin Bin Sun Yuping Han Yang Hong 2021Computer Modeling in Engineering & Sciences2021,,2:3
4A systematic investigation of high harmonic generation using mid-infrared driving laser pulses显示文摘We report on a systematic investigation of the influences of gas pressure,focal position and focusing geometry on high harmonic generation by use of mid-infrared femtosecond laser pulses. We also discuss the spatial characteristics of harmonics under different focusing conditions. By optimizing the parameters,we experimentally observed the generation of 1 kHz,low divergence coherent X-ray beams in the water-window region.YAO JinPing 1,2 ,XIONG Hui 1 ,XU Han 1 ,FU YuXi 1,2 ,ZENG Bin 1,2 ,CHU Wei 1,2 ,CHENG Ya 1 ,XU ZhiZhan 1 ,LIU XiaoJun 3 & CHEN Jing 4,5 1 State Key Laboratory of High Field Laser Physics,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China 2 Graduate University of Chinese Academy of Sciences,Beijing 100049,China 3 State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,Wuhan Institute of Physics and Mathematics,Chinese Academy of Sciences,Wuhan 430071,China 4 Institute of Applied Physics and Computational Mathematics,Beijing 100088,China 5 Center for Applied Physics and Technology,Peking University,Beijing 100084,China 2010Science China(Physics,Mechanics & Astronomy)2010,53,6:3
5Valence electron structure and properties of the ZrO_2显示文摘To reveal the properties of ZrO2 at the atom and electron levels, the valence elec- tron structures of three ZrO2 phases were analyzed on the basis of the empirical electron theory of solids and molecules. The results showed that the hybridization levels of Zr and O atoms in the m-ZrO2 were the same as those in the t-ZrO2, while those in the c-ZrO2 rose markedly. The electron numbers and bond energies on the strongest covalent bonds in the m-ZrO2 phase were the greatest, the values were 0.901106 and 157.5933 kJ/mol, respectively. Those in the t-ZrO2 phase took second place, which were 0.722182 and 123.9304 kJ/mol, and those in the c-ZrO2 phase were the smallest, which were 0.469323 and 79.0289 kJ/mol. According to the product of the bond energy on the strongest covalent bond and equivalent bond number (this value reflected the crystal cohesive energy), the order from the greatness to smallness was the c-ZrO2> t-ZrO2 > m-ZrO2. This showed that the m-phase bonds were the tightest, their energy was the smallest, the crystal cohe- sive energy of the m-phase was the largest, and the m-phase existed most stably at room temperature. So it must need energy or higher temperature to take apart the stronger covalent bonds to form a new phase.LI JinPing, MENG SongHe, HAN JieCai & ZHANG XingHong Center for Composite Materials, Harbin Institute of Technology, Harbin 150001, China 2008Science China(Technological Sciences)2008,51,11:2
6Electrode design, measuring method and data acquisition system of carbon fiber cement paste piezoresistive sensors 显示文摘Baoguo HAN Xinchun GUAN Jinping OU 2007Sensors and Actuators: A physical2007,135,2:1
7Assessment of industrial metabolisms of sulfur in a chinese fine chemical industrial park 显示文摘Tian Jinping Shi Han Chen Ying 2012Journal of Cleaner Production2012,32,9:1
8Embedded piezoresistive cement-based stress/strain sensor显示文摘Baoguo Han Jinping Ou 2007Sensors & Actuators: A Physical2007,,2:1
9The relationship of 3-PBA pyrethroids metabolite and male reproductive hormones among non-occupational exposure males显示文摘Yan Han Yankai Xia Jiayuan Han Jinping Zhou Shoulin Wang Pengfei Zhu Rencheng Zhao Nianzu Jin Ling Song Xinru Wang 2008Chemosphere2008,,5:1
10Coupling mass balance analysis and multi-criteria ranking to assess the commercial-scale synthetic alternatives:A case study on glyphosate显示文摘Tian Jinping Shi Han Li Xing 2012Green Chemistry2012,14,:1
11Electrode design, measuring method and data acquisition system of carbon fiber cement paste piezoresistive sensors显示文摘Han Baoguo Guan Xinchun Ou Jinping 2007Sensors and Actuators A2007,135,2:1
12Electrode design, measuring method and data acquisition system of carbon fiber cement paste piezoresistive sensors 显示文摘Han Baoguo Guan Xinchun Ou Jinping 2007Sensors and Actuators: A Physical2007,135,2:1
13The modulation of catalytic active site and support to construct high-efficiency ZnS/NC-X electrocatalyst for nitrogen reduction显示文摘Transition metals are a kind of promising catalysts to apply into electrocatalytic synthesis ammonia by virtue of abundant reserves and low cost.However,many widely used transition metal catalysts usually face the challenge to realize satisfactory catalytic results mainly resulting from the match between catalytic active site and support.Here,a new-type ZnS/NC-X electrocatalyst was reported by in-situ sulfidation of zeolitic imidazolate framework-8(ZIF-8),where the metal nodes of ZIF-8 reacted with dibenzyl disulfide(BDS)to obtain ZnS nanoparticles and the framework of ZIF-8 was carbonized to form the support.Especially,catalytic active sites(ZnS nanoparticles)and support(NC-X)were adjusted in detailed by changing the ratio of ZIF-8 and BDS.As a result,when the mass ratio of ZIF-8 and BDS was 1:1,the resulted ZnS/NC-2 catalyst achieved a remarkable NH3 yield of 65.60μg·h^(−1)·mg^(−1)cat.,Faradaic efficiency(FE)of 18.52%at−0.4 V vs reversible hydrogen electrode(RHE)in 0.05 M H2SO4 and catalytic stability,which outperformed most reported transition metal sulfides.The matching catalytic active site and support make our strategy promising for wide catalytic applications.Peng Wang Sijia Zhao Zijing Liu Caiyun Han Shuang Wang Jinping Li 2022Nano Research2022,15,9:1
14显示文摘Han Baoguo Guan Xinehun Ou Jinping 2007Sensors and Actuators: A physical2007,135,2:1
15Concentration Prediction from Chromatographic Spectra via Hidden Information Detector显示文摘Li Jinping Han Yanbin Yin Jianqin 2005International Journal of Information Acquisition2005,2,2:1
16Axial loadingbehavior of CFRP strengthened concrete-filled steeltubular stub columns显示文摘Tao Zhong Han Linhai Zhuang Jinping 2007Advances in StructuralEngineering2007,10,1:1
17Research on improved mean shift algorithm based on local distribu- tion in EEG signal classification 显示文摘ZHANG Shaobai HAN Yanbin LI Jinping 2012Journal of Artificial Intelligence Research2012,3,3:1
18Relationship between the Circumglobal Teleconnection and Silk Road Pattern over Eurasian continent显示文摘During boreal summer, two remarkable upper-level wave trains over Eurasia were documented in literature, i.e., Circumglobal Teleconnection (CGT) and Silk Road Pattern (SRP). They are widely discussed because of their influences throughout the entire midlatitude Eurasia. SRP was defined by 200 hPa meridional winds [1]. Enomoto et al.[2] found that the wave train influenced the climate variation over Japan when they detected the mechanism of Bonin High, and then named it as 'Silk Road Pattern'. SRP has 3 prominent action centers, which are located in west-central Asia, Mongolia and the Far East, respectively [3].Fuli Zhou Renhe Zhang Jinping Han 2019Science Bulletin2019,64,6:1
19Identifying the convergent reaction path from predesigned assembled structures: Dissymmetrical dehalogenation of Br_(2)Py on Ag(111)显示文摘On-surface Ullmann coupling has been intensely utilized for the tailor-made fabrication of conjugated frameworks towards molecular electronics, however, reaction mechanisms are still limitedly understood. Herein, we provide a comprehensive elucidation of the surface Ullmann coupling of 2,7-dibromopyrene (Br2Py) on Ag(111) by scanning tunnelling microscopy (STM), X-ray photoelectron spectroscopy (XPS) and density function theory (DFT), and reveal that the Ullmann reaction path is unique regardless of predesigned assembled structures. By manipulating deposition conditions, diverse assembled architectures have been constructed for Br2Py on Ag(111), including the ladder phase, parallel arrangement, hexagonal patterns from monomers or Kagome lattices based on organometallic (OM) dimers. Intriguingly, stepwise annealing leads to an identical reaction diagram for the surface Ullmann coupling from individual assembled structures convergent into the brick-wall-pattern OM dimers first, which is deemed to be a stable phase, and then into elongated OM chains in order and eventually long-range polymers with direct C-C coupling. While the reaction mechanism is demonstrated to be dominated by the metal coordinated and halogen bonding motifs, interestingly, it has also been revealed that surface adatoms and dissociated Br atoms play a crucial role in coupling reactions. In contrast to previous reports demonstrating the manipulation of Ullmann reactions by preassembled strategy, herein, weak intermolecular interaction in assembled nanostructures is immediately suppressed by strong covalent bonding during reactions. Importantly, our report proposes essential insights on fundamental understanding of surface Ullmann coupling towards high-yield surface synthesis.Jinping Hu Zhaofeng Liang Kongchao Shen Lei Xie Huan Zhang Chaoqin Huang Yaobo Huang Han Huang Jianxin Tang Zheng Jiang Miao Yu Fei Song 2021Nano Research2021,14,12:1
20China' s Quest for Eco-industrial Parks,Part II Reflections on a Decade of Exploration显示文摘Han Shi Jinping Tian Lujun Chen 2012Journal of Industrial Ecology2012,16,3:1
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