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402篇 您的检索式:作者名="Keyes C"
    题名 作者 年代 出处 被引量
1中国的炭疽杆菌DNA分型及其地理分布显示文摘炭疽广泛分布于中国各地 ,特别是西部地区 ,并经常造成人畜疾病。在一项合作研究中 ,用多位点VNTR分析 (MLVA)对从 195 2~ 1998年自中国主要地理流行区域分离的病人、病畜和土壤等来源的炭疽杆菌进行了基因分型。MLVA分析结果揭示了 2 1种新的基因型 ,其等位基因组合在以前世界范围分离物的研究中未曾发现。此外 ,分离物的分群显示 ,A3b组是地理上最广泛分布的基因组 ,说明该组可能是中国的“地方流行株”。王秉翔 SmithKL Keys C Coker P Keimp Jones M H 2002微生物学免疫学进展2002,30,1:22
2Clostridium difficile infections in China显示文摘Clostridium difficile (C. difficile) infection has become one of the major hospital-associated infections in West-ern countries in the last two decades. However, there is limited information on the status of C. difficile infection inChinese healthcare settings. Given the large and increasing elderly population and the well-recognized problem ofover-prescribing of broad spectrum antibiotics in China, it is critical to understand the epidemiology and potentialrisk factors that may contribute to C. difficile infection in China. A literature review of available published studies,including those in Chinese language-based journals, was conducted. A review of the currently available literaturesuggested the presence of C. difficile infections in China, but also suggested that these infections were not particu-larly endemic. This finding should lead to better designed and greatly expanded studies to provide a more reliableepidemiologically-based conclusion on the actual status of C. difficile infection in China, including the identifica-tion of any associated risk factors. Such information is ultimately valuable to develop appropriate strategies to pre-vent C. difficile infection and the vast negative impact of such infections in China and other developing countries.Ke Jin a,b,c,Shixia Wang c,d,Zuhu Huang a,b,c,Shan Lu b,c,daDepartment of Infectious Diseases,bJiangsu Province Key Laboratory in Infectious Diseases,cChina-US Vaccine ResearchCenter,the First Affiliated Hospital of Nanjing Medical University,Nanjing,Jiangsu 210029,China d Department of Medicine,University of Massachusetts Medical School,Worcester,MA 01655,USA. 2010The Journal of Biomedical Research2010,24,6:14
3Grain Size and Wettability of TiO_2/SiO_2 Photocatalytic Composite Thin Filing显示文摘The uniform transparent TiO2/SiO2 photocatalytic composite thin films are prepared by sol-gel method on the soda lime glass substrates, and characterized by UV-visible spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), BET surface area, FTIR spectroscopy and X-ray photoelectron spectroscopy (XPS). It was found that the addition of SiO2 to TiO2 thin films can suppress the grain growth of TiO2 crystal, increase the hydroxyl content on the surface of TiO2 films, lower the contact angle for water on TiO2 films and enhance the hydrophilic property of TiO2 films. The super-hydrophilic TiO2/SiO2 photocatalytic composite thin films with the contact angle of 0° are obtained by the addition of 10%-20% SiO2 in mole fraction.Jiaguo Yu, Xiujian Zhao, Jimmy C Yu, Jun Lin (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China Deportment of Chemised The Chinese University of Hong Kong, Hong Kong, 2001Rare Metals2001,20,2:11
4Preparation of nano-sized Bi_2Te_3 thermoelectric material powders by cryogenic grindingXiaozong Chen a, Leifeng Liu b, Yuan Dong a, Lianjun Wang a, Lidong Chen c, Wan Jiang a, a State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, 2999 people of North Road, Shanghai 201620, PR China b Department of Materials and Environmental Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden c Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, PR China 2012Progress in Natural Science:Materials International2012,22,3:8
5Corrosion behavior of Mg-Y alloy in NaCl aqueous solutionXin Zhang a,b,c,Kui Zhang a,Xia Deng a,Hongwei Li b,c,Yongjun Li a,Minglong Ma a,Ning Li b,c,Yanlong Wang b,c a State Key Laboratory for Fabrication and Processing of Nonferrous Metals,Beijing General Research Institute for Nonferrous Metals,Beijing 100088,China b Beijing Engineering Research Center for Advanced Manufacturing and Evaluation of Special Vehicle Parts,Beijing 100072,China c Center of Technology,Beijing North Vehicle Group Corporation,Beijing 100072,China 2012Progress in Natural Science:Materials International2012,22,2:7
6Effects of disinhibition on spatiotemporal pattern of neuronal first recruitment in neuronal networks显示文摘The propagation of neuronal activities is a key feature to understanding information processing in networks. The analysis based on first-spikes of bursts in turn plays an important role in the research of neuronal activity propagation. Our focus here is to investigate how spatiotemporal patterns of neuronal first-spikes are affected by disinhibition. Multi-electrode arrays were used to record stimulation-evoked bursts of multiple neurons in randomly cultured neuronal networks. Both the precise timing of and the rank relationships between first-spikes were analyzed. Compared with evoked bursts in the network's native state, the precise first-spike latencies in its dis-inhibited state are more consistent and the propagation of its bursting activities is much faster. Additional points of interest are that disinhibited neuronal networks can be evoked to generate stable and distinguishable neuronal first recruitment spatiotemporal patterns specific to the stimulation site, and that the disinhibition may cause the original spatiotemporal patterns to change in a heterogeneous manner with regards to different propagation pathways.Liangbin Pana,b,c,1, Xindong Songa,b,c,1, Guangxin Xiang a,b,c, Jing Zhua,b,c, Jing Cheng a,b,c,d,a Medical Systems Biology Research Center, Tsinghua University School of Medicine, Beijing 100084, China b Department of Biological Sciences and Biotechnology, Tsinghua University, Beijing 100084, China c National Engineering Research Center for Beijing Biochip Technology, 18 Life Science Parkway, Beijing 102206, China d State Key Laboratory of Biomembrane and Membrane Biotechnology, Tsinghua University, Beijing 100084, China 2009Progress in Natural Science:Materials International2009,19,5:6
7Effect of Temperature on the Synthesis of SiC Coating on Carbon Fibers by the Reaction of SiO with the Deposited Pyrolytic Carbon Layer显示文摘The influence of reaction temperature on the preparation of SiC coating on carbon fibers by the reaction of silicon monoxide with the deposited pyrolytic carbon (PyC) layer has been discussed.With rising reaction temperature,the thickness of SiC layer increases and the SiC grain is coarsening.The apparent activation energy for the synthesis of SiC layer is about 103.3 kJ/mol.The oxidation resistance of carbon fiber can be improved by the SiC/PyC layers significantly.The initial oxidation temperature of the SiC/PyC coated carbon fiber is about 300℃ higher than that of the uncoated carbon fiber.The oxidation of the SiC/PyC coated carbon fiber is owing to the diffusion of oxygen through the cracks generated by the mismatch of thermal expansion.Hejun Li,Haibo Ouyang,Lehua Qi,Yulei Zhang,Zhengjia Li and Jianfeng Wei C/C Composites Research Center,Key Laboratory of Ultrahigh Temperature Composites,Northwestern Polytechnical University,Xi an 710072,China 2010Journal of Materials Science & Technology2010,26,3:5
8Oxidation Protective C/SiC/Si-SiC Multilayer Coating for Carbon/Carbon Composites Applying at 1873 K显示文摘A C/SiC/Si-SiC multilayer coating for protecting carbon/carbon(C/C) composites against oxidation was prepared by slurry and pack cementation.X-ray diffraction(XRD) and energy dispersive spectroscopy(EDS) analysis showed that the inner coating obtained from the slurry and pack cementation was a C/SiC gradient layer acting as bonding layer,and the exterior coating formed in the second pack cementation was a Si-SiC double phase coating.Oxidation tests at 1873 K in air showed that the coating exhibited excellent oxidation protective ability and thermal shock resistance.The coating could effectively protect C/C composites from oxidation at 1873 K in air for 170 h and undergo the thermal cycling between 1873 K and room temperature for 8 cycles.The weight loss of the coated C/C composites is due to the formation of cracks and holes in the coating and the volatilization of SiO2 glass at high temperature.Yulei Zhang,Hejun Li,Xinfa Qiang and Kezhi Li C/C Composites Research Center,State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi an 710072,China 2010Journal of Materials Science & Technology2010,26,12:4
9Influences of low-Ti substitution for La and Mg on the electrochemical and kinetic characteristics of AB_3-type hydrogen storage alloy electrodes显示文摘The(La0.67Mg0.33)1-xTixNi2.75Co0.25(x = 0,0.05,0.10,0.15 and 0.20,at%) alloys were synthesized by arc melting and subsequent heat solid-liquid diffusing method.The structure,electrochemical properties and kinetic characteristics of the alloys were investigated systematically.The results showed that all the alloys mainly consisted of the(La,Mg)Ni3,LaNi5 phases,and the lattice parameters and the cell volumes of the(La,Mg)Ni3 and LaNi5 phases decreased with increasing Ti content.The alloy electrodes could be activated to reach their maximum discharge capacity within five cycles.The cycle life after 100 charge/discharge cycles(C100/Cmax) and the high-rate dischargeability at a discharge current density of 1200 mA/g first increased and then decreased.All the results showed that low-Ti content in AB3-type hydrogen storage alloys was beneficial to improvements of the overall electrochemical properties,and the optimum overall electrochemical performance of the alloy electrodes was obtained when x = 0.05.DONG ZhenWei1,2,WU YaoMing1,MA LiQun2,SHEN XiaoDong2 & WANG LiMin1 1 State Key Laboratory of Rare Earth Resource Utilization,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,C hangchun 130022,China 2 College of Material Science and Engineering,Nanjing University of Technology,Nanjing 210009,China 2010Science China(Technological Sciences)2010,53,1:2
10WELDING BETWEEN HIGH MANGANESE STEEL AND HIGH CARBON STEEL显示文摘Manuscript received 30 July 1999 Abstract The shielded metal arc welding (SMAW) of a manganese steel part as a crossing of railway track to a carbon steel part as the rails of the railroad is the welding of dissimilar steel. It are was known that it is not possible to the the rail of railroad directly to the cross- ing of railway track made from a steel containing about 14% of manganese (wt. ) because of so many differences between the two kinds of steels such as composition, microstructure,mechanical properties and weldability.A method was used to solve the problem by presetting an intermediate layer on each side of the joint and other special procedures were used.The result of test indicated that a good weld joint was obtained.M. H. Guo,D. C. Shao, Z. G Dong and J. C Yang National Key Laboratory Advanced Welding Production Technology, Harbin institute of Technology, Harbin 150001, China 2000Acta Metallurgica Sinica(English Letters)2000,13,1:2
11Social well-being显示文摘Keyes C L M 1998Social Psychology Quarterly1998,61,:1
12Stmcture of the Virus capsid pro- tein VP1 of enterovirus 71 predicted by some homology modeling and molecular docking studies 显示文摘KEY Y CHEN Y C LINT H 2006J Comput Chem2006,27,13:1
13Detection of florfenicol resistance genes in Escherichia coli isolated from sick chickens显示文摘KEYES K HUDSON C MAURER J J 2000Antimicrob Agents Chemother2000,44,:1
14Cell proliferation associated nuclear antigen defined by antibody Ki67:a new to kind of cycle-maintaining proteing显示文摘Duchrow M Schluter C Key G 1995Arck Immunol Ther Exp1995,43,2:1
15Globalized Newton-Krylov-Schwarz algorithms and software for parallel implicit CFD显示文摘GROPP W KEYES D McINNES L C 2000international Journal of High Performance Computing Applica-tions2000,14,2:1
16Air pollution and lung cancer incidence in 17 European cohorts: prospective analyses from the European Study of Cohorts for Air Pollution Effects (ESCAPE) 显示文摘Raaschou-Nielsen 0 Andersen ZJ Beelen R Samoli E Stafoggia M Weinmayr G Hoffmann B Fischer P Nieuwenhuijsen MJ Brunekreef B Xun WW Katsouyanni K Dimakopoulou K Sommar J Forsberg B Modig L Oudin A Oftedal B Schwarze PE Nafstad p De Faire U Pedersen NL Ostenson CG Fratiglioni L Penell J Korek M Pershagen G Eriksen KT Serensen M Tjenneland A Ellermann T Eeftens M Peeters PH Meliefste K Wang M Bueno-de-Mesquita B Key TJ de Hoogh K Concin H Nagel G Yilier A Grioni S Krogh y Tsai MY Ricceri F Sacerdote C Galassi C Migliore E Ranzi A Cesaroni G Badaloni C Forastiere F Tamayo I Amiano P Dorronsoro M Trichopoulou A Bamia C Yineis p Hoek G 2013Lancet Oncol2013,14,9:1
17Denitrification and N2fixation in the Pacific Ocean显示文摘Deutsch C Gruber N Key R M 2001Global Biogeochemical Cycles2001,15,:1
18Developmentally regulated expression of soybean proline-rich cell wall protein genes显示文摘Hong J C Nagao R T Key J L 1989Plant Cell1989,1,:1
19Effects of rosin-type clarifying agent on the crystallization and compatibility of poly- propylene and low density polyethylene 显示文摘WANG H LI C C KEY C 2006J App1 Polym Sci2006,99,4:1
20A three-constituent multi-continuum theory for woven fabric composite materials显示文摘 Six R W Hansen A C 2003Composites Science and Technology2003,63,:1
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