|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | The Constrained Solutions of Two Matrix Equations | An Ping LIAO Zhong Zhi BAI Department of Mathematics. Hunan University. Changshu, 410082. P. R. China Department of Mathematics and Information Science, Changsha University, Changsha 410003. P. R. China Academy of Mathematics and System. Sciences. Chinese Academy of Sciences. Beijing 100080. P. R. China State Key Laboratory of Scientific/Engineering Computing. Chinese Academy of Sciences. Institute of Computational Mathematics and Scientific/Engineering Computing. Academy of Mathematics and System Sciences. Chinese Academy of Sciences. P. O. Box 2719. Beijing 100080. P. R. China | 2002 | Acta Mathematica Sinica,English Series2002，18，4： | 40 |
| 2 | A 'Yellow Cap' on Quaternary Red Clay in Jiujiang,Jiangxi Province显示文摘A thin layer of yellow-brown-colored earth was generally found on Quaternary red clay in Jiujiang,Jiangxi Province. A typical profile was established. Both particle size distribution and REE (rare earthelements) characteristics of the yellow-brown-colored earth of the profile fully suggested its aeolian origin andclose similarity to Naming Xiashu loess. The study also implied aeolian origin of the underlying Quaternaryred clap Compared with the red clay, the yellow- brown- colored earth was less weathered because of its lowercontent of free iron and higher mole ratios of SiO2/A12O3 and SiO2/(Fe2O3+A12O3 ) as well as its lessdeveloped chemical microtextures of quartz grains.In order to study the aged of the two deposits comparatively, the thermoluminescent dating method wasused. As a result, the bottom of the yellow-brown-colored esrth was dated to 6015 ka B. P. and the upperpart of the red clay 38854 ka B. P. It was suggested that the yellow- browm- colored earth was formed inthe Late Pleistocene and was probably the aeolian deposit of the Last Glacial, which corresponded with theMalan loess in the Loess Plateau of the northwestern part of China; while the underlying red clay was formedin the Middle Pleistocene.A 'yellow cap' on Quaternary red clay in Jiujiang implied a great climatic and environmental varistionin the beginning of the Late Pleistocene in the southern pot of China, especially in the middle and lowerreaches of the Yangtze River. The eveal not only halted the rubification, once dominating the region, butalso produced a widespread covering of aeolian deposit, as only occurred in the cold and dry environment. | HU XUEFENG GONG ZITONG(1State Key Laboratory of Loess and Quaternary Geology, the Chinese Academy of Sciences, P. O. Box: 17,xi’an 710054 (China))(2Institute of Soil Science, the Chinese Acodemy of Sciences, P. O. Box 821, Nanjing 210008 (China)) | 1999 | Pedosphere1999，9，4： | 9 |
| 3 | NUMERICAL STUDIES ON RESONANT AND ENHANCEMENT EFFECTS FOR COUPLING OF MICROWAVE PULSES INTO NARROW SLOTS显示文摘In this paper, modifications to the finite-difference time-domain(FD-TD) method for modeling microwave pulse coupling into a slot, which is much narrower than one conventional FD-TD cell, are discussed. The coupling process of microwave pulse into a slot is studied by using the modified FD-TD method, and the dependence of microwave coupling on slot sizes, the carrier frequencies and the polarization directions of the incident waves is analysed. Resonant and enhancement effects which occur in this process are observed. The condition at which the resonant effect takes place is also presented. | Wang Jianguo Yu Hanqing Liu Guozhi Chen Yusheng Fan Ruyu (Northwest Institute of Nuclear Technology, Branch 15, P. O. Box 69, Xi’an 710024)Ge Debiao(Department of Physics, Xidian University, Xi’an 710071) | 1998 | Journal of Electronics(China)1998，15，2： | 6 |
| 4 | OPTIMIZATION OF TRANSIENT FEEDING TO PARALLEL-PLATE TRANSMISSION LINES FROM COAXIAL LINE显示文摘The transient feeding to parallel-plate transmission lines from coaxial line is optimized by using the Finite-Difference Time-Domain (FDTD) method and a simple FDTD feed model. Observing the reflected voltages, this letter presents the optimal feeding position and ratio of width to height for a given input impedance of the coaxial line. | Tian Chunming Wang Jianguo Meng Fenxia Zhang Maoyu Ge Debiao(Department of Physics, Xidian University, Xi’an 710071) (Northwest Institute of Nuclear Technology, P. O. Box 69-15, Xi’an 710024) | 2001 | Journal of Electronics(China)2001，18，3： | 4 |
| 5 | Leading Edge Film Cooling Enhancement for an Inlet Guide Vane with Fan-Shaped Holes显示文摘This paper describes the improvement of leading edge film cooling effectiveness for a turbine inlet guide vane by using fan-shaped film cooling holes. The modification details are presented in comparison with the base-line configuration of cylindrical holes. Numerical simulations were carried out for the base-line and modified configurations by using CFX, in which the κ-ε turbulence model and scalable wall function were chosen. Contours of adiabatic film cooling effectiveness on the blade surfaces and span-wise distributions of film cooling effectiveness downstream the rows of cooling holes interested for the different cooling configurations were compared and discussed. It is showed that with the use of fan-shaped cooling holes around the leading edge, the adiabatic film cooling effectiveness can be enhanced considerably. In comparison with the cylindrical film cooling holes, up to 40% coolant mass flow can be saved by using fan-shaped cooling holes to obtain the comparable film cooling effectiveness for the studied inlet guide vane. | Jian-Jun LIU, Bai-Tao AN, Jie LIU and Zhan W Institute of Engineering Thermophysics, Chinese Academy of Sciences, P. O. Box 2706, Beijing 100190, China Professor,PhD | 2010 | Journal of Thermal Science2010，19，6： | 3 |
| 6 | Primary migration and secondary alteration of the Upper Paleozoic gas reservoir in Ordos Basin,China―Application of fluid inclusion gases显示文摘The composition of fluid inclusions(FI)often represents the initial geochemical characteristics of palaeo-fluid in reservoir rock.Influence on composition and carbon isotopic composition of gas during primary migration,reservoir-forming and subsequent secondary alterations are discussed through comparing fluid inclusion gas with coal-formed gas and natural gas in present gas reservoirs in the Ordos Basin.The results show that primary migration of gas has significant effect on the molecular but not on the carbon isotopic composition of methane.Migration and diffusion fractionation took place during the secondary migration of gas in Upper Paleozoic gas reservoir according to carbon isotopic composition of methane in FIs.Composition and carbon isotopic composition of natural gas were nearly unchanged after the gas reservoir forming through comparing the FI gases with the natural gas in present gas reservoir. | GONG Se 1,2 ,PENG PingAn 1 ,SHUAI YanHua 3 ,DAI JinXing 3 &ZHANG WenZheng 4 1 Guangzhou Institute of Geochemistry,the Chinese Academy of Sciences,Guangzhou 510640,China 2 Common Wealth Scientific and Research Organization,Petroleum Resources,PO Box 136,North Ryde,New South Wales,1670,Australia 3 Research Institute of Petroleum Exploration and Development,PetroChina,Beijing 100083,China 4 Research Institute of Exploration and Development,Changqing Petroleum Corporation,Xi’an 710021,China | 2008 | Science China Earth Sciences2008，51，S1： | 3 |
| 7 | Heavy ion reactions around the Coulomb barrier显示文摘The angular distributions of fission fragments for the 32S+184W reaction near Coulomb barrier energies are measured. The ex perimental fission excitation function is obtained. The measured fission cross sections are decomposed into fusion-fission, quasi-fission and fast fission contributions by the dinuclear system (DNS) model. The hindrance to completing fusion both at small and large collision energies is explained. The fusion excitation functions of 32S+90,96Zr in an energy range from above to below the Coulomb barrier are measured and analyzed within a semi-classical model. The obvious effect of positive Q-value multi-neutron transfers on the sub-barrier fusion enhancement is observed in the 32S+96Zr system. In addition, the excitation functions of quasi-elastic scattering at a backward angle have been measured with high precision for the systems of 16O+208Pb, 196Pt, 184W, and 154,152Sm at energies well below the Coulomb barrier. Considering the deformed coupling effects, the extracted diffuseness parameters are close to the values extracted from the systematic analysis of elastic and inelastic scattering data. The elastic scattering angular distribution of 17F+12C at 60 MeV is measured and calculated by using the continuum-discretized coupled-channels (CDCC) approach. It is found that the diffuseness parameter of the real part of core-target potential has to be increased by 20% to reproduce the experimental result, which corresponds to an increment of potential depth at the surface re gion. The breakup cross section and the coupling between breakup and elastic scattering are small. | ZHANG HuanQiao1, LIN ChengJian1, JIA HuiMing1, ZHANG ChunLei1,2, ZHANG GaoLong1,3, YANG Feng1, LIU ZuHua1, AN GuangPeng1, WU ZhenDong1, XU XinXing1 & JIA Fei1 1 China Institute of Atomic Energy, P. O. Box 275(10), Beijing 102413, China 2 Particle Astrophysics Center, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, China 3 School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China | 2011 | Science China(Physics,Mechanics & Astronomy)2011，54，S1： | 3 |
| 8 | 2-D DIRECTION FINDING OF COHERENT SIGNALS VIA TEMPORO-SPATIAL PROCESSING显示文摘In most wireless communication systems, two-dimensional Directions-Of-Arrival (DOA) of multipath signals need to be found for spatial selective transmission. However, it is quite difficult to find their DOAs due to the coherent nature of multipath signals and considerable computations when performing 2-D searches. In this paper, a new algorithm to estimate 2-D DOA of multiple narrow-band signals is proposed. A DOA cyclic matrix is constructed whose eigenvalues and eigenvectors can be simultaneously used to extract 2-D DOA without 2-D searches. By exploiting the temporal property of cyclostationarity, the signal detection capability is significantly improved. Besides, based on the decorrelation model for mobile terminal signals, the algorithm can be effectively extended to the coherent case without spatial smoothing and the loss of array aperture. Simulation results are given to illustrate the performance of the new algorithm. | Jin Liang (PLA Information Engineering College, 1001 P. O. Box 6-5#, Zhengzhou 450002)Yao Minli Yin Qinye (Institute of Information Engineering, Xi’an Jiaotong University, Xi’an, 710049) | 2000 | Journal of Electronics(China)2000，17，1： | 2 |
| 9 | Potential energy curves for the X^1Σ_g^+, B^1△_g and B′~1Σ_g^+ states of C_2 using MRCI and approximate CI methods显示文摘The potential energy curves for the X1Σ g+, B1△g and B′1Σ g+ states of C2 have been studied by using MRC and approximate CI methods, and are benchmarked against the calculations of full configuration in teraction (FCI). The results obtained by MRCI method agree with the FCI very well, and even are accu rate enough to compare other approximate methods as benchmark, when the calculations of FCI ar not feasible. The approximate CI methods mentioned in this paper are reliable for treating chemica problems. | LI AnYang1, WANG YuBin2, DOU YuSheng1,3 & WEN ZhenYi1,2 1 Institute of Bio-information, Chongqing University of Post and Telecommunication, Chongqing 400065, China 2 Institute of Modern Physics, Northwest University, Xi’an 710069, China 3 Department of Physical Sciences, Nicholls State University, PO Box 2022, Thibodaux, LA 70310, U. S. A | 2007 | Science China Chemistry2007，50，5： | 2 |
| 10 | HIGH-TEMPERATURE LOW CYCLE FATIGUE BEHAVIOR OF NICKEL BASE SUPERALLOY GH536显示文摘Low cycle fatigue tests on nickel base superalloy GH536 were performed at 600, 700 and 800℃. The strain-life and cyclic stress-strain relationship were given at various temperatures. The change in fatigue life behavior and fatigue parameters with tem- perature increasing was discussed. At low and intermediate total strain amplitudes, the fatigue life was found to decrease with increasing temperature. | M.Zhao, L. Y. Xu, K.S. Zhang and B. Y. Yang Department of Aeroengines and Thermal Power, Northwestern Polytechnical University, Box 184, Xi’an 710072, China | 2001 | Acta Metallurgica Sinica(English Letters)2001，14，5： | 1 |
| 11 | HIGH TEMPERATURE DEFORMATION MECHANISM AND CONSTITUTIVE EQUATION OF Ti-40 BUREN RESISTANT TITANIUM ALLOY显示文摘Ti - 40 alloy is a single β phase burn resistant titanium alloy.Its high temperature deformation mech- anism is studied and its stress - strain curves are examined he use of Gleeble - 1500 thermal -simulator. The results reveal that there are abrupt flow stress drops followed b steady state.The magnitude of the flow stress drop increases with strain rote and decreases with temperature.Deformation activation energy, Q, is 247. 5 KJ/mol. The deformation mechanism of Ti - 40 alloy is controlled by the lattice diffusion Its constitutive equation is set up, i. e. | Y. Q. Zhao L. Zhou and J. Deng (Northwest Institute for Nonferrous Metal Research, P. O. Box 51 Xi’ an, Shaanxi 710016, China) | 2000 | Acta Metallurgica Sinica(English Letters)2000，13，1： | 1 |
| 12 | Carrier mobility tuning of MoS_(2) by strain engineering in CVD growth process显示文摘Strain engineering is proposed to be an effective technology to tune the properties of two-dimensional(2D)transition metal dichalcogenides(TMDCs).Conventional strain engineering techniques(e.g.,mechanical bending,heating)cannot conserve strain due to their dependence on external action,which thereby limits the application in electronics.In addition,the theoretically predicted strain-induced tuning of electrical performance of TMDCs has not been experimentally proved yet.Here,a facile but effective approach is proposed to retain and tune the biaxial tensile strain in monolayer MoS_(2) by adjusting the process of the chemical vapor deposition(CVD).To prove the feasibility of this method,the strain formation model of CVD grown MoS_(2) is proposed which is supported by the calculated strain dependence of band gap via the density functional theory(DFT).Next,the electrical properties tuning of strained monolayer MoS_(2) is demonstrated in experiment,where the carrier mobility of MoS_(2) was increased by two orders(~0.15 to~23 cm^(2)·V^(−1)·s^(−1)).The proposed pathway of strain preservation and regulation will open up the optics application of strain engineering and the fabrication of high performance electronic devices in 2D materials. | Yongfeng Chen Wenjie Deng Xiaoqing Chen Yi Wu Jianwei Shi Jingying Zheng Feihong Chu Beiyun Liu Boxing An Congya You Liying Jiao Xinfeng Liu Yongzhe Zhang | 2021 | Nano Research2021，14，7： | 0 |
| 13 | STRUCTURE CHARACTERIZATION OF Ru_3(CO)12 IN NaY ZEOLITE BY INFRARED SPECTROSCOPY显示文摘STRUCTURECHARACTERIZATIONOFRu_3(CO)12INNaYZEOLITEBYINFRAREDSPECTROSCOPY￥AnMingLIU;LinHUANG;YiDeXU;TakafumiSHIDO2)andMasaruICH?.. | An Ming LIU Lin HUANG Yi De XU Takafumi SHIDO 2) and Masaru ICHKIAWA 2)1) (State Key Laboratory of Catalysis, Dalian Institute of Cehmical Physics,P. O. Box 110, Dalian 116023)2)(Catalysis Reaearch Center, Hokkaido University, Sapporo 060, JAPAN) | 1994 | Chinese Chemical Letters1994，5，8： | 0 |
| 14 | Research Activities on Space Electronics in CAST显示文摘This paper gives a brief review of the research activities on space electronics done in Chinese Academy of Space Technology (CAST), especially in Xi’an Institute of Space Radio Technology (XISRT). XISRT undertakes the development and manufacturing of space borne electronic equipment and their relevant ground TT&C in CAST. This paper deals with satellite communication and remote sensing. | Chen Shiping and Wang YifeiXi’an Institute of Space Radio Technology, CAST MAS, P.O. Box 165. Xi’an 710000, China | 1993 | Journal of Systems Engineering and Electronics1993，4，3： | 0 |
| 15 | Growth of centimeter scale Nb_(1−x)W_(x)Se_(2) monolayer film by promoter assisted liquid phase chemical vapor deposition显示文摘Two-dimensional(2D)transition-metal dichalcogenide materials(TMDs)alloys have a wide range of applications in the field of optoelectronics due to their capacity to achieve wide modulation of the band gap with fully tunable compositions.However,it is still a challenge for growing alloys with uniform components and large lateral size due to the random distribution of the crystal nucleus locations.Here,we applied a simple but effective promoter assisted liquid phase chemical vapor deposition(CVD)method,in which the quantity ratio of promoter to metal precursor can be controlled precisely,leading to tiny amounts of transition metal oxide precursors deposition onto the substrates in a highly uniform and reproducible manner,which can effectively control the uniform distribution of element components and nucleation sites.By this method,a series of monolayer Nb_(1−x)W_(x)Se_(2)alloy films with fully tunable compositions and centimeter scale have been successfully synthesized on sapphire substrates.This controllable approach opens a new way to produce large area and uniform 2D alloy film,which has the potential for the construction of optoelectronic devices with tailored spectral responses. | Boxing An Yang Ma Feihong Chu Xuhong Li Yi Wu Congya You Wenjie Deng Songyu Li Yongzhe Zhang | 2022 | Nano Research2022，15，3： | 0 |
| 16 | 高产酒精肺炎克雷伯菌引起的非酒精性脂肪肝病显示文摘文章简介非酒精性脂肪肝(NAFLD)具有进展为肝硬化和肝细胞癌的风险,其潜在病因多种多样,目前认为NAFLD与肠道微生物群的变化有关,然而,它们之间的因果关系尚不清楚。研究团队发现肠道菌群中高产酒精的肺炎克雷伯菌(HiAlc Kpn)可能是NAFLD的一个病因。在NAFLD患者人群中,高达60%的患者肠道菌群中含有HiAlc Kpn。 | 袁静 Chen Chen Jinghua Cui Jing Lu Chao Yan Xiao Wei Xiangna Zhao NanNan Li Shaoli Li Guanhua Xue Weiwei Cheng Boxing Li Huan Li Weishi Lin Changyu Tian Jiangtao Zhao Juqiang Han Daizhi An Qiong Zhang Hong Wei Minghua Zheng Xuejun Ma Wei Li Xiao Chen Zheng Zhang Hui Zeng Sun Ying JianXin Wu Ruifu Yang 刘翟 | 2020 | 科学新闻2020，，2： | 0 |
| 17 | AN ADAPTIVE FILTERING ALGORITHM OF VELOCITY ESTIMATION显示文摘In this paper, a novel adaptive filtering algorithm using real-time deviation of velocity estimation is presented for maneuvering target tracking. This new algorithm will be called adaptive filtering algorithm of velocity estimation. A number of simulation results indicate that the algorithm not only has good performance on tracking maneuvering target, but also greatly improves the capacity for tracking non-maneuvering target. So it is worthy to be applied widely in practice. | Tao Weigang Feng Xinxi(Dept. of the Computer and Command Automation, Telecom. Eng. Iust., Air Force Eng. University, Post Box No.111, Xi’an 710077) | 2000 | Journal of Electronics(China)2000，17，3： | 0 |
| 18 | A study on remote sensing models of sea ice thickness by microwave radiometry显示文摘Extrapolating from the propagation theories of electromagnetic waves in a layered medium, a three-layer medium model is deduced in this paper by using microwave radiometric remote sensing technology which is suitable to first-year sea ice condition of the northern part of China seas. Comparison with in situ data indicates that for microwave wavelength of 10 cm, the coherent model gives a quite good fit result for the thickness of sea ice less than 20 cm, and the incoherent model also works well for thickness within 20 to 40 cm. Based on three theoretical models, the inversion soft ware from microwave remote sensing data for calculating the thickness of sea ice can be set up. The relative complex dielectrical constants of different types of sea ice in the Liaodong Gulf calculated by using these theoretical models and measurement data are given in this paper. The extent of their values is (0. 5-4. 0)-j(0. 07~0. 19). | Zheng Quan’an, Zhang Dong and Pan Jiayi The First Institute of Oceanography, State Oceanic Administration, P. O. Box 98, Qingdao 266003, China | 1993 | Acta Oceanologica Sinica1993，12，2： | 0 |
| 19 | ELECTROH-DONATING BEHAVIOR OF Co AND Fe IH PROMOTED Rh CATALYSTS显示文摘A vacuum heating operation at 623 K on the surfaces of SiO2-supported promoted ca-talysts makes it possible to reveal the electron transfer from Co and Fe additives to Rhatoms: a Rh catalyst containing 1 % Eh under CO exhibits geminal CO IR bands only, while thepresence of Co and Fe in promoted Rh catalysts results in linear and bridged CO chemisorp-tions on Rh in connection with their promotion in the selective hydroformylation of propy-lene. | Lin HUANG An Ming LIU Wen Gui GUO Yi De XU State Key Laboratory of Catolysis, Dalian Institute of Chemical Physics, P. O. Box 110, Dalian 116023 | 1993 | Chinese Chemical Letters1993，4，7： | 0 |
| 20 | AN EFFECTIVE ORGANO-BIMETALLIC Rh-Co CLUSTER CATALYST FOR HYDROFORMYLATION显示文摘ANEFFECTIVEORGANO-BIMETALLICRh-CoCLUSTERCATALYSTFORHYDROFORMYLATION￥LinHUANG;YiDeXUandAnMindLIU(StateKeyLaboratoryofCalalysis... | Lin HUANG Yi De XU and An Mind LIU (State Key Laboratory of Calalysis. Dalian Institute of Chemical Physics,P. O. Box 110. Daliall 116023) | 1994 | Chinese Chemical Letters1994，5，10： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员