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63篇 您的检索式:作者名="JiFa"
    题名 作者 年代 出处 被引量
1Lithospheric structure and faulting characteristics of the Helan Mountains and Yinchuan Basin: Results of deep seismic reflection profiling显示文摘The Helan Mountains and Yinchuan Basin(HM-YB) are located at the northern end of the North-South tectonic belt,and form an intraplate tectonic deformation zone in the western margin of the North China Craton(NCC).The HM-YB has a complicated history of formation and evolution,and is tectonically active at the present day.It has played a dominant role in the complex geological structure and modern earthquake activities of the region.A 135-km-long deep seismic reflection profile across the HM-YB was acquired in early 2014,which provides detailed information of the lithospheric structure and faulting characteristics from near-surface to various depths in the region.The results show that the Moho gradually deepens from east to west in the depth range of 40-48 km along the profile.Significant differences are present in the crustal structure of different tectonic units,including in the distribution of seismic velocities,depths of intra-crustal discontinuities and undulation pattern of the Moho.The deep seismic reflection profile further reveals distinct structural characteristics on the opposite sides of the Helan Mountains.To the east,The Yellow River fault,the eastern piedmont fault of the Helan Mountains,as well as multiple buried faults within the Yinchuan Basin are all normal faults and still active since the Quaternary.These faults have controlled the Cenozoic sedimentation of the basin,and display a 'negative-flower' structure in the profile.To the west,the Bayanhaote fault and the western piedmont fault of the Helan Mountains are east-dipping thrust faults,which caused folding,thrusting,and structural deformation in the Mesozoic stratum of the Helan Mountains uplift zone.A deep-penetrating fault is identified in the western side of the Yinchuan Basin.It has a steep inclination cutting through the middle-lower crust and the Moho,and may be connected to the two groups of faults in the upper crust.This set of deep and shallow fault system consists of both strike-slip,thrust,and normal faults formed over different eras,and provides the key tectonic conditions for the basin-mountains coupling,crustal deformation and crust-mantle interactions in the region.The other important phenomenon revealed from the results of deep seismic reflection profiling is the presence of a strong upper mantle reflection(UMR) at a depth of 82-92 km beneath the HM-YB,indicating the existence of a rapid velocity variation or a velocity discontinuity in that depth range.This is possibly a sign of vertical structural inhomogeneity in the upper mantle of the region.The seismic results presented here provide new clues and observational bases for further study of the deep structure,structural differences among various blocks and the tectonic relationship between deep and shallow processes in the western NCC.LIU BaoJin FENG ShaoYing JI JiFa WANG ShuaiJun ZHANG JianShi YUAN HongKe YANG GuoJun 2017Science China Earth Sciences2017,60,3:11
2Effects of calcination temperature on physicochemical property and activity of CuSO4/TiO2 ammonia-selective catalytic reduction catalysts显示文摘CuSO4/TiO2 catalysts with high catalytic activity and excellent resistant to SO2 and H2 O,were thought to be promising catalysts used in Selective catalytic reduction of nitrogen oxides by NH3.The performance of catalysts is largely affected by calcination temperature.Here,effects of calcination temperature on physicochemical property and catalytic activity of CuSO4/TiO2 catalysts were investigated in depth.Catalyst samples calcined at different temperatures were prepared first and then physicochemical properties of the catalyst were characterized by N2 adsorption-desorption,X-ray diffraction,thermogravimetric analysis,Raman spectra,Fourier-transform infrared spectroscopy,X-ray photoelectron spectroscopy,temperature-pro grammed desorption of NH3,temperature-programmed reduction of H2 and in situ diffuse reflectance infrared Fourier transform spectroscopy.Results revealed that high calcination temperature had three main effects on the catalyst.First,sintering and anatase transform into rutile with increase of calcination temperature,causing a decrement of specific surface area.Second,decomposition of CuSO4 under higher calcination temperature,resulting in disappears of Br(?)nsted acid sites(S-OH),which had an adverse effect on surface acidity.Third,CuO from the decomposition of CuSO4 changed surface reducibility of the catalyst and favored the process of NH3 oxidation to nitrogen oxides(NOx).Thus,catalytic activity of the catalyst calcined under high temperatures(≥600℃)decreased largely.Yanke Yu Jiali Zhang Changwei Chen Chi He Jifa Miao Huirong Li Jinsheng Chen 2020Journal of Environmental Sciences2020,32,5:6
3ANALYSIS OF THE PREDICTION CAPABILITY OF WEB SEARCH DATA BASED ON THE HE-TDC METHOD - PREDICTION OF THE VOLUME OF DAILY TOURISM VISITORS显示文摘Geng Peng Ying Liu Jiyuan Wang Jifa Gu 2017Journal of Systems Science and Systems Engineering2017,26,2:5
4Probability Criterion in Inventory System with Bounded Emergency OrderLIU Baoding GU Jifa Institute of Systems Science, Academia Sinica, Beijing 100080, P. R. China 1993Systems Science and Systems Engineering1993,3,3:4
5Dependent-Chance Goal Programming and an Application显示文摘This paper presents a dependent-chance goal programming (DCGP) and gives a successive factoring method to solve DCGP. We also discuss the application of DCGP in Qinhuangdao region for water supply and allocation.Baoding, Liu Jifa, Gu 1993Journal of Systems Engineering and Electronics1993,4,2:4
6On limiting behavior of stationary measures for stochastic evolution systems with small noise intensity显示文摘The limiting behavior of stochastic evolution processes with small noise intensityεis investigated in distribution-based approaches.Letμεbe a stationary measure for stochastic process Xεwith smallεand X0 be a semiflow on a Polish space.Assume that{με:0<ε≤ε0}is tight.Then all their limits in the weak sense are X0-invariant and their supports are contained in the Birkhoff center of X0.Applications are made to various stochastic evolution systems,including stochastic ordinary differential equations,stochastic partial differential equations,and stochastic functional differential equations driven by Brownian motion or Levy processes.Lifeng Chen Zhao Dong Jifa Jiang Jianliang Zhai 2020Science China Mathematics2020,63,8:3
7EXPERT DISCOVERY AND KNOWLEDGE MINING IN COMPLEX MULTI-AGENT SYSTEMS显示文摘复杂解决问题要求多样的专家知识和多重技术。为了解决如此的问题,人的专家包括两个的复杂多代理人系统和自治代理人,在许多应用程序域被要求。最复杂的多代理人系统在开的领域工作并且包括各种各样的异构的代理人。由于代理人的异质和工作环境的动态特征,代理人的专家知识和能力可能很好没在这些被估计并且介绍系统。因此,怎么从人、自治的专家发现有用知识,为专家的能力做更多的精确评价并且发现解决到来的问题(“专家采矿”) 的合适的专家是在区域 ofmulti 代理人系统的重要研究问题。在这篇论文,我们在混合多代理人系统为知识和专家采矿介绍一条基于本体论的途径。在这研究,本体论被雇用描述系统的知识。当系统处理到来的问题,知识和专家采矿进程被执行。在这条途径,我们在 multi-agentsystems 嵌入更自我学习、自动调节的能力,以便在发现多代理人系统的异构的专家的知识帮助。Minjie ZHANG Xijin TANG Quan BAI Jifa GU 2007Journal of Systems Science and Systems Engineering2007,16,2:2
8THREE ASPECTS ON SOLVING QUEUING SERVICE SYSTEM IN SHANGHAI WORLD EXPO显示文摘This paper analyzes the queuing problem that was experienced during the Shanghai World Expo of2010.The queuing problem will be discussed at three levels.The three levels include the physical,psychological,and social aspects of the queuing problem.The collective behavior of visitors is studied through analyzing the information from the different sources,such as,the network of electronic eyes,the evaluation platform based on mobile phone system and the Internet.A hybrid information network technology is implemented.Based on the Wuli-Shili-Renli(WSR) system methodology,a new theoretical analysis framework for the queuing problem is proposed.Jifa GU Shanying XU Yong FANG Kan SHI Benfu LV Geng PENG Bo WANG Li SONG Rong XIE 2013Journal of Systems Science and Systems Engineering2013,22,3:2
9Permanence in nonautonomous Lotka–Volterra system with predator–prey显示文摘Jiandong Zhao Jifa Jiang 2003Applied Mathematics and Computation2003,,1:1
10Discovery of a novel sodium taurocholate cotransporting polypeptide(NTCP) inhibitor: Design, synthesis, and anti-proliferative activities显示文摘Sodium taurocholate cotransporting polypeptide(NTCP)is identified as the functional receptor for HBV entry,which is responsible for upregulated HBV transcription in the HBV life cycle.Besides,NTCP is also implicated in the progression of HBV-induced hepatocellular carcinoma(HCC).Thereby,NTCP-targeting entry inhibitors are proposed to suppress HBV infection and replication in HBV-induced hepatoma therapy.Herein,we integrated in silico screening and chemical synthesis to obtain a small-molecule NTCP inhibitor B7,which exhibited moderate anti-proliferative activities against HepG2 cells and anti-HBV activity in vitro.Additionally,CETSA assay,molecular docking,and MD simulation validated that B7 could bind to NTCP.Furthermore,western blot analysis demonstrated that B7 induced apoptosis with an increased expression of Bax and caspase 3 cleaving as well as a decreasing expression of Bcl-2 in HepG2 cells.Taken together,our study identified B7 as a novel NTCP inhibitor with anti-proliferation activities which might provide a new opportunity for HCC therapy.Honggang Xiang Yanmei Chen Jifa Zhang jin Zhang Dabo Pan Bo Liu Liang Ouyang 2020Chinese Chemical Letters2020,31,6:1
11A note on a global stability theorem of M W Hirsch显示文摘Jiang Jifa 1991Proc Amer Math Soc1991,112,:1
12The effect of crack orienta- tion on fracture behavior of tantalum by muhiscale simulation 显示文摘Mei Jifa Ni Yushan Li Junwan 2011International Journal of Solids and Structures2011,48,:1
13Core-shell Fe304@SiO2 nanoparticles synthesized with well-dispersed hydrophilic Fe304 seeds显示文摘Hui Chao Shen Chengmin Tian Jifa 2011Nanoscale2011,3,2:1
14The Application of Knowledge Management in the Internet----Witkey Mode in China显示文摘Liu Feng Zhang lingling Gu Jifa 2007International Journal of Knowledge and Systems Sciences2007,,4:1
15Data, DIKW, Big Data and Data Science 显示文摘Gu Jifa Zhang Lingling 2014Procedia Computer Science2014,,31:1
16PROBABILITY CRITERION IN INVENTORY SYSTEM WITH VARYING STOCHASTIC DEMANDS显示文摘PROBABILITYCRITERIONININVENTORYSYSTEMWITHVARYINGSTOCHASTICDEMANDS¥LIUBaoding;GUJifa(InstituteofSystemsScience,AcademiaSinica,...LIU Baoding GU Jifa (Institute of Systems Science, Academia Sinica, Beijing 100080, China) 1994Systems Science and Mathematical Sciences1994,7,3:1
17The application of knowledge management in the internet: Witkey mode in china显示文摘Liu Feng Zhang Lingling Gu Jifa 2007International Journal of Knowledge and Systems Sciences2007,,4:1
18MicroRNA-650 targets ING4 to promote gastric cancer tumorigenicity显示文摘XueLi Zhang WeiYing Zhu JiFa Zhang ShouJun Huo LianMing Zhou Zhen Gu Min Zhang 2010Biochemical and Biophysical Research Communications2010,,2:1
19The classification of the dynamical behavior of 3-dimensional type K monotone Lotka-Volterra systems 显示文摘Xing Liang Jifa Jiang 2002Nonlinear Analysis2002,51,:1
20Unconditional and conditional QTL analysis of kernel weight related traits in wheat ( Triticum aestivum L.) in multiple genetic backgrounds显示文摘Xinye Zhang Zhiying Deng Yongrui Wang Jifa Li Jichun Tian 2014Genetica2014,,4:1
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