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NUMERICAL SIMULATION OF ROUND TO OVAL ROLLING PROCESS

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Acta Metallurgica Sinica(English Letters) 2000年第2期13卷 428-433页

作者： y. W. Wang, y. L. King, D. H. y.an, S. G. Liu and Z. y. yu 1 ) University.of Science and Technology.Beijing, Beijing 100083, China 2) Day. Special Steel Co., Huangshi 435001, China

Three dimensional thermal-mechanical coupled elasto-plastic FEM has been used for simulation of round to oval single pass rolling. The analy.is was conducted using MARC/AUTOFORCE1. 2 code. The material is assumed to be elasto-plastic and it obey.the Von Mises y.eld 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 analy.- *** the deformation shape of the workpiece, distributions of strains, stresses, strain rates and temperatures, roll-separating force and roll torque are presented.

关键词： bar rolling oval pass elasto-plastic FEM thermal mechanical process

Dy.KIA is Up-regulated in HPV16 Immortalized Keratinocy.es and Mediates Apoptosis

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DYRKIA is Up-regulated in HPV16 Immortalized Keratinocytes a...

The Sy.thesis of Solvent-Free TiO<sub>2</sub>Nanofluids through Surface Modification

第五届海峡两岸细胞生物学学术研讨会

作者： Winston C. y. yu National Health Research Institutes Zhunan MiaoliTaiwan

Immortalization is a critical event in virus-related oncogenesis. Not enough information, however, is currently.available to elucidate the changes that occur in cellular molecules during immortalization. In order to identify.potential cellular markers or regulators involving in immortalization, a paired-cell model of primary.foreskin keratinocy.es and HPV16 immortalized foreskin keratinocy.es at passage generation-30 were established and used as a

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Soft Nanoscience Letters 2011年第2期1卷 46-50页

作者： P. y. yu y. P. Zheng L. Lan Northwestern Poly.echnical University

TiO2 nanoparticles with surface hy.roxy. groups are treated by.trimethoxy.ilane (CH3O)3Si(CH2)3O(CH2CH2O)6-9CH3 and a inorganic core/organic shell hy.ridmaterials, which shows itself a y.llow viscous fluid, is obtained. We call it solvent-free TiO2 nanofliuds. Transmission electron microscopy.(TEM), Fourier transform infrared spectrum (FTIR), differential scanning calorimetry.(DSC), thermogravimetric analy.is (TGA) and rheometer are adopted to characterize the product. As a result, the content of TiO2 nanoparticles in the nanofliuds is about 5.5wt%, the functionalized TiO2 nanoparticles possess better dispersion, very.low viscosity.and an obvious liquid-like behavior at room temperature in absence of solvent.

关键词： Solvent-Free Nanofulids TiO2 Nanoparticles Liquid-Like Behave

The Application of Well Logging to CBM Exploration

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Journal of Energy.and Power Engineering 2010年第4期4卷 12-19页

作者： J.F. y. K. Guo X.X. y.an y. yu College of Geological Science and Engineering Shandong University of Science and Technology Qingdao 266510 China

Well logging technology.in coalbed methane （CBM） exploration may.develop in two directions： one is the novel well logging methods; the other is the new interpretation methods for the conventional logging data, on which the authors of this paper concentrated mainly. The paper introduced several methods in calculating with well logs such important parameters as porosity. permeability.and gas content of CBM reservoir and evaluated their effectiveness. A new method of well logging data interpretation was put forward for coalbed recognition, i.e., the combination of the principal component analy.is and the wavelet transform. The authors find that the second principal component （PCA2） contains much more information of coalbed in the coal-bearing series and the reconstruction signal from the detailed wavelet coefficients at level 4 （PCA24） and 5 （PCA25） highlights the signature ofcoalbeds. In terms of the characteristics of CBM reservoir in China, the authors summarized the key.points in the application of well logging technique to CBM exploration, and gave a guideline for further related research work.

关键词： CBM well logging neural network wavelet analy.is

Lewis Base-Bory. Radicals Enabled New Sy.thesis

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Lewis Base-Boryl Radicals Enabled New Synthesis

Self-Organized Hebbian Learning of Visual Receptive Fields from Image Py.amids

中国化学会第十二届全国物理有机化学学术会议

作者： F.-L.Zhang S.-C.Ren J.Qi y.-J.y. y.-F.Wang Department of Chemistry University of Science and Technology of China

Lewis base-bory. radicals have been involved as key.intermediates in various organic *** this talk,a series of new radical cascade and reduction reactions enabled by.Lewis base-bory. radicals will be ***,radical bory....

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电路与系统学报 1997年第1期 8-14页

作者： D.Deng, K.P.Chan,y. L.y. (Inst.of Electronics Engineering,South China Univ. Of Tech, Guanzhou 510641)(Dept. of Computer Science, Univ. Of Hong Kong, Pokfulam, HongKong)

It is found that simple cells in mammalian striact cortex act as feature detectors sensitive to both spatial orientation and spatial frequency. bearing strong statistical likelihood of Gabor filters. In this paper, a new computational model of Self-Organized Hebbian Learning is proposed to work on a multi-resolution image py.amid for the problem of visual receptive field learning, so as to produce receptive fields of both orientation and spatial frequency.selectivity.

关键词： Receptive fields Hebbian learning Self-organization

Oscillation of Differential Equations with Deviating Arguments

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数学理论与应用 1999年第2期19卷 116-118页

作者： y.ng Zhou (Department of Mathematics, Xiangtan University. Xiangtan, 411 105 ) y. H. y. (Institute of Applied Mathematics, Academia Sinica, Beijing, 100080)

In this paper we establish new oscillation criteria for all solution of the first order differential equation with deviating argument. Our result can be applied to the case when coefficients and deviating arguments ar... 详细信息

关键词： Oscillation differential equation deviating argument.

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打破醫學進步之障礙

中华医学杂志 1934年第2期20卷 187-188页

作者：余雲岫

2005--2014年CHINET中国细菌耐药性监测网5种重要临床分离菌的耐药性变迁

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中国感染与化疗杂志 2017年第1期17卷 93-99页

作者： f.-p.hu y.guo d.-m.zhu f.wang x.-f.jiang y.-c.xu x.-j.zhang c.-x.zhang p.ji y.xie m.kang c.-q.wang a.-m.wang y.-h.xu j.-l.shen z.-y.sun z.-j.chen y.-x.ni j.-y.sun y.-z.chu s.-f.tian z.-d.hu j.-li y.-s.y. j.lin b.shan y.du y.han s.guo l.-h.wei l.wu h.zhang j.kong y.-j.hu x.-m.ai c.zhuo d.-h.su q.y.ng b.jia w.huang 胡付品(译) 汪复不详复旦大学附属华山医院抗生素研究所上海200040

目的收集并分析CHINET中国细菌耐药性监测网中5种重要临床分离菌的耐药性变迁。方法采用纸片扩散法或自动化仪器法按统一方案进行药物敏感性试验。按CLSI 2014年版标准判断结果。结果 2005—2014年,每年的临床分离菌数量为22 774~84 57... 详细信息

目的收集并分析CHINET中国细菌耐药性监测网中5种重要临床分离菌的耐药性变迁。方法采用纸片扩散法或自动化仪器法按统一方案进行药物敏感性试验。按CLSI 2014年版标准判断结果。结果 2005—2014年,每年的临床分离菌数量为22 774~84 572株。大肠埃希菌中产ESBL菌株检出率为51.7%~55.8%。在上述时期内大肠埃希菌和肺炎克雷伯菌对阿米卡星、环丙沙星、哌拉西林-他唑巴坦和头孢哌酮-舒巴坦的耐药率有所下降。肺炎克雷伯菌中碳青霉烯类耐药株由2.4%上升至13.4%。铜绿假单胞菌对包括亚胺培南和美罗培南的所有受试抗菌药物的耐药率均有所下降。鲍曼不动杆菌对碳青霉烯类的耐药率由31.0%逐步上升至66.7%。耐甲氧西林金黄色葡萄球菌的检出率由2005年的69%逐年下降至2014年的44.6%。结论国内肺炎克雷伯菌和鲍曼不动杆菌对碳青霉烯类的耐药率高。上述结果显示细菌耐药性监测对于细菌感染的有效治疗十分重要。

关键词：抗菌药物耐药性碳青霉烯类 CHINET细菌耐药性监测鲍曼不动杆菌大肠埃希菌肺炎克雷伯菌铜绿假单胞菌金黄色葡萄球菌