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WELDABILITY OF Cu-W ALLOY AND COPPER USING FRICTON WELDING METHOD

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中国有色金属学会会刊：英文版 1995年第3期5卷 136-139页

作者： Hou, Saizhang Liu, Ximing (department of Materials Science and Engineering,Central south university of Technology, Changsha 410083) Central south Univ of Technology Changsha China

ＷＥＬＤＡＢＩＬＩＴＹＯＦＣｕ－ＷＡＬＬＯＹＡＮＤＣＯＰＰＥＲＵＳＩＮＧＦＲＩＣＴＯＮＷＥＬＤＩＮＧＭＥＴＨＯＤ￥Ｈｏｕ，Ｓａｉｚｈａｎｇ；Ｌｉｕ，Ｘｉｍｉｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｅｒｉａｌｓＳｃｉｅｎｃ... 详细信息

ＷＥＬＤＡＢＩＬＩＴＹＯＦＣｕ－ＷＡＬＬＯＹＡＮＤＣＯＰＰＥＲＵＳＩＮＧＦＲＩＣＴＯＮＷＥＬＤＩＮＧＭＥＴＨＯＤ￥Ｈｏｕ，Ｓａｉｚｈａｎｇ；Ｌｉｕ，Ｘｉｍｉｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｅｒｉａｌｓＳｃｉｅｎｃｅａｎｄＥｎｇｉｎｅｅｒｉｎｇ，Ｃ...

关键词： Cu-W alloy friction welding weldability orthogonal method

Maximal possible accretion rates for slim disks

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Science China(physics,Mechanics & Astronomy) 2009年第12期52卷 2054-2058页

作者： LIN YiQing1 & JIAO ChengLiang2 1 department of Mathematics and physics,Xiamen university of Technology,Xiamen 361024,China 2 department of physics and Institute of Theoretical physics and Astrophysics,Xiamen university,Xiamen 361005,China 1. department of Mathematics and physics Xiamen University of Technology Xiamen 361024 China 2. department of physics and Institute of Theoretical physics and Astrophysics Xiamen University Xiamen 361005 China

It was proved in the previous work that there must be a maximal possible accretion rate $ \dot M_{max} $ for a slim disk. Here we discuss how the value of $ \dot M_{max} $ depends on the two fundamental parameters of the disk, namely the mass of the central black hole M and the viscosity parameter α. It is shown that $ \dot M_{max} $ increases with decreasing α, but is almost independent of M if $ \dot M_{max} $ is measured by the Eddington accretion rate $ \dot M_{Edd} $ , which is in turn proportional to M.

关键词： accretion disks black hole physics hydrodynamics

THEORETICAL　ANALYSIS　AND　DESIGN／CALCULATION　FORMULAE　FOR　HYDRAULIC　IMPACT　MECHANISM

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中国有色金属学会会刊：英文版 1995年第1期5卷 116-121页

作者： He Qinghua(department of Mechanical Engineering ,Central south university of Technology , Changsha 410083)

ＴＨＥＯＲＥＴＩＣＡＬＡＮＡＬＹＳＩＳＡＮＤＤＥＳＩＧＮ／ＣＡＬＣＵＬＡＴＩＯＮ　ＦＯＲＭＵＬＡＥＦＯＲ　ＨＹＤＲＡＵＬＩＣＩＭＰＡＣＴＭＥＣＨＡＮＩＳＭＨｅ；Ｑｉｎｇｈｕａ（ＤｅｐａｒｔｍｅｎｔｏｆＭｅｃｈａｎｉｃ... 详细信息

ＴＨＥＯＲＥＴＩＣＡＬＡＮＡＬＹＳＩＳＡＮＤＤＥＳＩＧＮ／ＣＡＬＣＵＬＡＴＩＯＮ　ＦＯＲＭＵＬＡＥＦＯＲ　ＨＹＤＲＡＵＬＩＣＩＭＰＡＣＴＭＥＣＨＡＮＩＳＭＨｅ；Ｑｉｎｇｈｕａ（ＤｅｐａｒｔｍｅｎｔｏｆＭｅｃｈａｎｉｃａｌＥｎｇｉｎｅｅｒｉｎｇ，Ｃｅｎ...

关键词： hydraulic impact mechanism acceleration ratio unretrieved oil

A　NEW　PARTICLES　ADDING　TECHNIQUE　FOR　PREPARATION　OF　METAL　MATRIX　COMPOSITE　USING　SPRAY　DEPOSITE

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中国有色金属学会会刊：英文版 1996年第2期6卷 123-124页

作者： Chen Shizhu Yin Zhimin(department of Materials Science and Engineering ,Central south university of Technology, Changsha 410083) department of Materials Science and Engineering Central South University of Technology Changsha 410083 China

ＡＮＥＷＰＡＲＴＩＣＬＥＳＡＤＤＩＮＧＴＥＣＨＮＩＱＵＥＦＯＲＰＲＥＰＡＲＡＴＩＯＮＯＦＭＥＴＡＬＭＡＴＲＩＸＣＯＭＰＯＳＩＴＥＵＳＩＮＧＳＰＲＡＹＤＥＰＯＳＩＴＥＣｈｅｎＳｈｉｚｈｕ；ＹｉｎＺｈｉｍｉｎ（Ｄｅｐａｒ... 详细信息

ＡＮＥＷＰＡＲＴＩＣＬＥＳＡＤＤＩＮＧＴＥＣＨＮＩＱＵＥＦＯＲＰＲＥＰＡＲＡＴＩＯＮＯＦＭＥＴＡＬＭＡＴＲＩＸＣＯＭＰＯＳＩＴＥＵＳＩＮＧＳＰＲＡＹＤＥＰＯＳＩＴＥＣｈｅｎＳｈｉｚｈｕ；ＹｉｎＺｈｉｍｉｎ（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｅｒｉａｌｓＳ...

关键词： atomize reinforced particles spray deposition

The effect of hydrogen on the electronic structure of kink in bcc iron

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Science China(Technological Sciences) 2009年第5期52卷 1212-1218页

作者： CHEN LiQun1,QIU ZhengChen1,YU Tao2 & WANG ChongYu2,3,4 1 College of Sciences,Central south university of Forestry and Technology,Changsha 410004,China 2 Central Iron and Steel Research Institute,Beijing 100081,China 3 department of physics,Tsinghua university,Beijing 100084,China 4 International Center for Materials physics,Chinese Academy of Sciences,Shenyang 110016,China 1. College of Sciences Central South University of Forestry and Technology Changsha 410004 China 2. Central Iron and Steel Research Institute Beijing 100081 China 3. department of physics Tsinghua University Beijing 100084 China 4. International Center for Materials physics Chinese Academy of Sciences Shenyang 110016 China

The electronic structures of kinks in the [100](010) and 1/2[111](-110) edge dislocations in bcc iron containing hydrogen are investigated by means of the first-principles DMol method and the discrete variational *** effects of hydrogen on the kinks are *** results show that hydro-gen forms weak bonding states with its neighboring host atoms,and since hydrogen draws charge from its neighboring host atoms,the interactions between most of the host atoms are weakened com-pared with those of the corresponding atomic pairs in the clean *** indicates that the migration of kink,*** motion of dislocation,is easier in the doping hydrogen kink than in the clean kink,which may be the solid solution softening effect resulting from the impurity hydrogen.

关键词： electronic structure dislocation kink impurity

Resolution of Internal Total ReflectionScanning Near-field Optical Microscopy

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Chinese Journal of Lasers 2002年第2期11卷 33-38页

作者： GE Huayong GUO Qizhi TAN Weihan (department of physics, Shanghai university, Shanghai 200436, China ) department of physics Shanghai Universit 上海 200436

In this paper, the probe-sample interaction equation based on Mie’s scattering theory is derived, and the resolution of scanning near field optical microscopy is calculated numerically. The results show that the offset of far-field component to near-field component in total field plays an important role in the resolution and the size of samples also has influence on resolution.

关键词： scanning near field optical microscopy (SNOM) resolution offset of far-field component to near-field component

Hysteresis behavior and nonequilibrium phase transition in a one-dimensional evolutionary game model

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Chinese physics B 2013年第4期22卷 213-217页

作者：华达银 physics department Ningbo University

We investigate a simple evolutionary game model in one dimension. It is found that the system exhibits a discontinuous phase transition from a defection state to a cooperation state when the b payoff of a defector exploiting a cooperator is small. Furthermore, if b is large enough, then the system exhibits two continuous phase transitions between two absorbing states and a coexistence state of cooperation and defection, respectively. The tri-critical point is roughly estimated. Moreover, it is found that the critical behavior of the continuous phase transition with an absorbing state is in the directed percolation universality class.

关键词： evolutionary game model nonequilibrium phase transition with absorbing state cooperation phenomenon hysteresis behavior

Effects of Ginkgolide B on action potential and calcium, potassium current in guinea pig ventricular myocytes

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Acta Pharmacologica Sinica 2004年第2期 77-81页

作者： Xiao-yan QI, Zhi-xiong ZHANG2, You-qiu XU3 department of Physiology, Shanghai university of Traditional Chinese medicine, Shanghai 200032 3department of Physiology, Shanghai Second Medical university, Shanghai 200025, China

AIM: To investigate the effect of Ginkgolide B (GB) on action potential (AP) , delayed rectifier potassium current (IK), and L-type calcium current (ICa-L) in guinea pig ventricular myocytes. METHODS: Single ventricular myocytes were isolated by an enzymatic dissociation method. AP, IK, ICa-L were recorded by whole-cell patch-clamp tech- nique in either current or voltage clamp mode. RESULTS: GB shortened APD in a concentration-dependent manner. GB 0.1, 1, and 10 μmol/L shortened APD50 by 7.9 % (n=5, P>0.05), 18.4 % (n=5, P05), 17.6 % (n=5, P3.1 % (n=6, P37.7 % (n=6, P<0.05), respectively at testing potential of +50 mV and shift the I-V curve of Ik upward. But GB had no significant effect on ICa-L at above concentrations. CONCLUSION: GB significantly shortened APD in a concentration-dependent manner which mainly due to increase of IK.

关键词： Ginkgo biloba patch-clamp techniques myocardium action potentials potassium channels cal- cium channels

Different-Periodic Travelling Wave Solutions for Nonlinear Equations

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Communications in Theoretical physics 2004年第4期41卷 481-486页

作者： YE Li-Jun~1 LIN Ji~(1,2)1 department of physics,Zhejiang Normal university,Jinhua 321004,China2 physics department,Shanghai Jiao Tong university,Shanghai 200030,China physics department Shanghai Jiao Tong University Shanghai 200030 China

Using Jacobi elliptic function linear superposition approach for the(1+1)-dimensional Caudrey-Dodd-Gibbon-Sawada-Kotera(CDGSK)equation and the(2+1)-dimensional Nizhnik-Novikov-Veselov(NNV)equation,many new periodic travelling wave solutions with different periods and velocities are obtained based on the knownperiodic *** procedure is crucially dependent on a sequence of cyclic identities involving Jacobi ellipticfunctions sn(ξ,m),cn(ξ,m),and dn(ξ,m).

关键词： linear superposition nonlinear equation travelling wave solution