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80篇 您的检索式:作者名="W. Yuan"
    题名 作者 年代 出处 被引量
1NUMERICAL SIMULATION OF ROUND TO OVAL ROLLING PROCESS显示文摘Three dimensional thermal-mechanical coupled elasto-plastic FEM has been used for simulation of round to oval single pass rolling. The analysis was conducted using MARC/AUTOFORCE1. 2 code. The material is assumed to be elasto-plastic and it obey the Von Mises yield criterion and Prandtl- Reuss rule. Deformation of the workpiece is simulated in a step-by-step manner,updating the coordinates of material points and the property after each step, so that both nonsteady-state and stendy-state deformation can be simulated. The heat transfter between the workpiece, the rolls, and enviroment and the heat generation due to plastic work and friction force, are considered in the analys- is.Predicted the deformation shape of the workpiece, distributions of strains, stresses, strain rates and temperatures, roll-separating force and roll torque are presented.Y. W. Wang, Y. L. King, D. H. Yuan, S. G. Liu and Z. Y. Yu 1 ) University of Science and Technology Beijing, Beijing 100083, China 2) Daye Special Steel Co., Huangshi 435001, China 2000Acta Metallurgica Sinica(English Letters)2000,13,2:27
2Clp Protease and OR Directly Control the Proteostasis of Phytoene Synthase, the Crucial Enzyme for Carotenoid Biosynthesis in Arabidopsis显示文摘Phytoene synthase (PSY ) 是在类胡萝卜素 biosynthetic 小径的关键 plastidial 酶。然而,它的 translational 以后规定留下逃犯。同样, Clp 朊酶组成质体朊酶网络的中央部分,但是它为降级的底层不是众所周知的。在这研究,我们报导 PSY 是 Clp 朊酶的底层。PSY 被揭开身体上与各种各样的 Clp 朊酶子单元交往(即, ClpS1, ClpC1,和 ClpD ) 。在 clpc1, clpp4,和 clpr1-2 异种的 PSY 和几另外的 carotenogenic 酶蛋白质 overaccumulate 高级。overaccumulated PSY 被发现部分酶地活跃。在 clpc1 的 Clp 活动的缺陷导致 PSY 蛋白质周转的减少的率,进一步在降级的 PSY 支持 Clp 朊酶的角色蛋白质。在另一方面, ORANGE (或) 蛋白质,有 holdase 女伴活动的 PSY 的一个主要 translational 以后管理者,提高 PSY 蛋白质稳定性并且在 clpc1 增加 PSY 的酶地活跃的比例, counterbalancing 在维持 PSY 蛋白质动态平衡的调停 Clp 的解朊作用。一起,这些调查结果提供新奇卓见进质体局部性的蛋白质的质量控制并且建立迄今未辩别出的 translational 以后在在植物的 modulating 类胡萝卜素生合成的 carotenogenic 酶的规章的机制。Ralf Welsch Xiangjun Zhou Hui Yuan Daniel Alvarez Tianhu Sun Dennis Schlossarek Yong Yang Guoxin Shen Hong Zhang Manuel Rodriguez-Concepcion Theodore W. Thannhauser Li Li 2018Molecular Plant2018,11,1:10
3GROWTH MECHANISM OF TiC WHISKERS PREMRED BY A MODIFIED CHEMICAL VAPOR DEPOSITION METHOD显示文摘High quality TiC whiskers have been prepared by a modified chemical vapor deposition (CVD) method using TiCl4 and CH4 as reactant gases and Ni as substrate. The deposition temperature and gas flow mies have ampreciable effect on the whisker growth.The whisker orientations and morphology are determined by X-my diffraction (XRD),scanning electron micmpmph (SEM) and transmission electron microgmph (TEM).In addition to the spherical tips, spiral growth microsteps and obvious terraces are observed at the tips and side faces of whiskers in the present eoperiment. The whiskers grow mostly along (100) direction. The whisker growth mechanism is discussed in detail.J.S. Pan and Y. W. Yuan (Department of Materials Science and Engineering, Tsinghua Universityt Beijing 100084, China)(Department of Materials Science and Engineering, Tsinghua Universityt Beijing 100084, China) 1999Acta Metallurgica Sinica(English Letters)1999,12,3:7
4FAS promoter polymorphisms and cancer risk: a meta-analysis based on 34 casecontrol studies显示文摘Zhang, Z. Z. Xue, H. C. Gong, W. D. Wang, M. L. Yuan, L. Han, S. P. Zhang, Z. D. 2009南京医科大学学报(自然科学版)2009,29,4:6
5Census of Kuiper Comets-the TAOS Project显示文摘Cometary nuclei, the remnant icy bodies of planet formation, located at the outer edge of the solar system, are relatively poorly studied because of their small sizes and thus faintness. Thus far more than a hundred large members (size about 100 km) of this cometary population in the Kuiper belt have been identified. Smaller bodies (10 km) are much too faint to image directly and their number so far can only be extrapolated on theoretical grounds. The Taiwan-America Occultation Survey (TAOS) will conduct a census of the number of Kuiper belt objects down to a few km size by monitoring chance stellar occultations by these cometary nuclei. We will set up an array of small (50cm), wide-field (f/1 9) telescopes, each equipped with a 2K squared CCD camera, along a 7 km baseline in central Taiwan at an elevation above ~ 3000 m. The robot telescopes will operate in a coincidence mode, so the sequence and timing of any candidate occultation event can be recorded and distinguished against a false detection. The Lawrence Livermore National Laboratory, the National Central University, and the Academia Sinica, will each contribute one telescope system. Researchers from an international variety of institutes are also participating in the project. Our experiment provides the only means to study the cometary population in the small-sized end of the distrbution. A great number of scientific byproducts, notably variable stars, will also derive from the huge TAOS database, some 10, 000 giga-bytes worth of photometrical measuremements per year.Wen Ping ChenOther TAOS team members: C. Alcock, K. Cook, S. Marshall, M. Hammergren(LLNL) T. Lee, C. Yuan, C. Y. Wen, S. K. King(ASIAA) W. S. Tsay, W. Ip, C. Lemme, J. H. Wang(NCU) T. Axelrod(ANU) I. de Pater(UCB) J.Lissauer(Ames) Y. I. Byun(Yonsei 1999天文研究与技术1999,,S1:3
6A Method of Inversing the Peak Density of Atomic Oxygen Vertical Distribution in the MLT Region From the OI (557.7 nm)Night Airglow Intensity显示文摘In this paper, using the MSISE-90 model as the reference atmosphere, we discuss the feasibility and method of deducing the peak densities of the undisturbed atomic oxygen profiles in the MLT region (the mesosphere and lower thermosphere region) from OI (557.7 nm) night airglow intersities. The peak densities for different seasons, latitudes and longitudes are deduced from OI (557.7nm) airglow intensities through this expression. We analyze the features of inversion relative errors and discuss the influence of the variations in temperature on inversion errors. The results indicate that all inversion errors are less than 5% except for those at high altitudes in the summer hemisphere. And the impact of the variations in temperature on errors is not significant.H. Gao J. Y. Xu W. Yuan 2005空间科学学报2005,25,5:3
7DEVELOPMENT OF A VERSATILE SENSING MEMBRANE FOR IMMUBILIZATION OF PROTEIN AND A NEW IMMOBILIZATION METHOD显示文摘DEVELOPMENTOFAVERSATILESENSINGMEMBRANEFORIMMUBILIZATIONOFPROTEINANDANEWIMMOBILIZATIONMETHODY.K.Zhou,J.W.Yuan,S.Q.Xu,B.H.Shu(D...Y.K. Zhou, J. W. Yuan,S. Q. Xu, B. H. Shu(Department of Environmental Medicine,Tongji Medical University,Wuhan 430030, China)P. R. H. Kooyman(Department of Applied Physics,MESA Institute, University of Twente, P. O. Box 217,7500 AE Enschede, The Netherlan 1996Chinese Journal of Biomedical Engineering(English Edition)1996,5,4:2
8Sustainable H2 production from ethanol steam reforming over a macro-mesoporous Ni/Mg-Al-O catalytic monolith显示文摘macro-meso-porous 整体的基于 Ni 的催化剂作为模板用聚苯乙烯泡沫经由一条受精线路被准备然后在乙醇改过生产 H2 富有的气体的蒸气使用了。Ni/Mg-Al 催化剂有一层次地由相片和扫描电子显微镜学(SEM ) 显示了的 macro-meso-porous 结构。催化剂的表面区域是 230Ruixue GU Guangming ZENG Jingjing SHAO Yuan LIU Johannes W. Schwank Yongdan LI 2013Frontiers of Chemical Science and Engineering2013,7,3:2
9Recent Safety Concerns With Proton Pump Inhibitors显示文摘Joan Chen Yuhong Cathy Yuan Grigorios I. Leontiadis Colin W. Howden 2012Journal of Clinical Gastroenterology2012,,2:2
10Scoring the collective effects of SNPs: association of minor alleles with complex traits in model organisms显示文摘It has long been assumed that most parts of a genome and most genetic variations or SNPs are non-functional with regard to reproductive fitness.However,the collective effects of SNPs have yet to be examined by experimental science.We here developed a novel approach to examine the relationship between traits and the total amount of SNPs in panels of genetic reference populations.We identified the minor alleles(MAs)in each panel and the MA content(MAC)that each inbred strain carried for a set of SNPs with genotypes determined in these panels.MAC was nearly linearly linked to quantitative variations in numerous traits in model organisms,including life span,tumor susceptibility,learning and memory,sensitivity to alcohol and anti-psychotic drugs,and two correlated traits poor reproductive fitness and strong immunity.These results suggest that the collective effects of SNPs are functional and do affect reproductive fitness.YUAN DeJian ZHU ZuoBin TAN XiaoHua LIANG Jie ZENG Chen ZHANG JieGen CHEN Jun MA Long DOGAN Ayca BROCKMANN Gudrun GOLDMANN Oliver MEDINA Eva RICE Amanda D. MOYER Richard W. MAN Xian YI Ke LI YanKe LU Qing HUANG YiMin HUANG Shi 2014Science China(Life Sciences)2014,57,9:2
11Programmed death‐1/B7‐H1 negative costimulation protects mouse liver against ischemia and reperfusion injury显示文摘Haofeng Ji Xiuda Shen Feng Gao Bibo Ke Maria Cecilia S. Freitas Yoichiro Uchida Ronald W. Busuttil Yuan Zhai Jerzy W. Kupiec‐Weglinski 2010Hepatology2010,,4:1
12Site-directed mutagenesis of the hinge region of nisinZ and properties of nisinZ mutants显示文摘J. Yuan Z.-Z. Zhang X.-Z. Chen W. Yang L.-D. Huan 2004Applied Microbiology and Biotechnology2004,,6:1
13Influence of Ambient Temperature on Nanosecond and Picosecond Laser-Induced Bulk Damage of Fused Silica显示文摘L. Yang X. D. Yuan H. X. Deng X. Xiang W. G. Zheng S. B. He Y. Jiang H. B. Lv L. Ye H. J. Wang X. T. Zu Haiyan Xiao 2014Advances in Condensed Matter Physics2014,,:1
14An experimental study of exit pressures for polymer melts显示文摘T. W. Chan B. Pan H. Yuan 1990Rheologica Acta1990,,1:1
15Phytoplankton Biomass and Production in Subtropical Hong Kong Waters: Influence of the Pearl River Outflow显示文摘Alvin Y. T. Ho Jie Xu Kedong Yin Yuelu Jiang Xiangcheng Yuan Lei He Donald M. Anderson Joseph H. W. Lee Paul J. Harrison 2010Estuaries and Coasts2010,,1:1
16Effect of water stress on photosystem 2 in two wheat cultivars显示文摘W. -J. Liu S. Yuan N. -H. Zhang T. Lei H. -G. Duan H. -G. Liang H. -H. Lin 2006Biologia Plantarum2006,,4:1
17Cellular and Molecular Basis of Pulmonary Arterial Hypertension显示文摘Nicholas W. Morrell Serge Adnot Stephen L. Archer Jocelyn Dupuis Peter Lloyd Jones Margaret R. MacLean Ivan F. McMurtry Kurt R. Stenmark Patricia A. Thistlethwaite Norbert Weissmann Jason X.-J. Yuan E. Kenneth Weir 2009Journal of the American College of Cardiology2009,,1:1
18An experimental study of exit pressures for polymer melts显示文摘T. W. Chan B. Pan H. Yuan 1990Rheologica Acta1990,,1:1
19Direct repair of defect in lumbar spondylolysis and mild isthmic spondylolisthesis by bone grafting, with or without facet joint fusion显示文摘L. Y. Dai L. S. Jia W. Yuan B. Ni H. B. Zhu 2001European Spine Journal2001,,1:1
20Developing theory from strategic management research in China显示文摘Yuan Li Mike W. Peng 2008Asia Pacific Journal of Management2008,,3:1
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