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Search Results: 1 - 10 of 141619 matches for " OU Jing-Li "
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Clinical observation of 41 cases of senile ischemic heart disease treated by losarton, carvadilol and Shenmai Injection
CHI Jing-Li
Zhong Xi Yi Jie He Xue Bao , 2003,
Abstract:
The Research and Implementation of Volume Management in NAS
NAS系统中卷管理器的研究与实现

OU Yang-Kai ZHOU Jing-Li YU Sheng-Sheng XIA Tao,
欧阳凯
,周敬利,余胜生,夏涛

计算机科学 , 2003,
Abstract: The research and implementation of the volume management is the key technology in Network Attached Storage (NAS) .which is also the important part in the research of virtual storage system. This paper researches the volume management technology and its error-control mechanism based on DAGs model,optimizes the online recovery mechanism, and improves the method of the hot-plug technology. Finally, we implement the optimum volume management based on FreeBSD.
A Field Method for Integrating Equations of Motion of Nonlinear Mechanico-Electrical Coupling Dynamical Systems

FU Jing-Li,FU Hao,

中国物理快报 , 2008,
Abstract: We deal with the generalization of the field method to weakly non-linear mechanico-electrical coupling systems. The field co-ordinates and field momenta approaches are combined with the method of multiple time scales in order to obtain the amplitudes and phase of oscillations in the first approximation. An example in mechanico-electrical coupling systems is given to illustrate this method.
690合金在300℃含硫模拟碱性水化学中的腐蚀行为
夏大海,luo,jing-li
物理化学学报 , 2015,
Abstract: 690合金作为压水堆核电站蒸汽发生器传热管的一种关键材料,其在碱性环境下还原态硫导致的钝化膜的腐蚀退化是引发应力腐蚀开裂的关键原因之一.本文采用动电位极化曲线,结合扫描电镜(sem)、俄歇能谱(aes)、二次离子飞行时间质谱(tof-sims)研究了690合金在300℃模拟碱性水化学中的腐蚀行为,并分析了硫代硫酸根与硫酸根对钝化膜特性的影响.实验结果表明:300℃碱性溶液中690合金表面钝化膜为外层的多孔层与内层的紧密层组成的双层结构,所加入的硫酸盐种类对690合金的耐蚀性有较大影响;硫代硫酸根使690合金钝化电流密度增加,过钝化电位降低,即钝化膜的耐蚀性降低;此外,硫代硫酸根使钝化膜中的cr含量降低而ni含量提高,硫代硫酸根会在合金表面电化学还原成为更低价态的硫进入钝化膜,使钝化膜中的硫化物增多也是导致钝化膜防护性能变差的原因;而硫酸根与钝化膜的作用较弱,对钝化膜的影响较小.
690合金在300 ℃含硫模拟碱性水化学中的腐蚀行为
Corrosion Behavior of Alloy 690 in Simulated Alkaline Water Chemistries Containing Sulfur at 300 ℃

夏大海, LUO Jing-Li
- , 2015, DOI: 10.3866/PKU.WHXB201501053
Abstract: 690 合金作为压水堆核电站蒸汽发生器传热管的一种关键材料, 其在碱性环境下还原态硫导致的钝化膜的腐蚀退化是引发应力腐蚀开裂的关键原因之一. 本文采用动电位极化曲线, 结合扫描电镜(SEM)、俄歇能谱(AES)、二次离子飞行时间质谱(ToF-SIMS)研究了690合金在300 ℃模拟碱性水化学中的腐蚀行为, 并分析了硫代硫酸根与硫酸根对钝化膜特性的影响. 实验结果表明: 300 ℃碱性溶液中690合金表面钝化膜为外层的多孔层与内层的紧密层组成的双层结构, 所加入的硫酸盐种类对690合金的耐蚀性有较大影响; 硫代硫酸根使690合金钝化电流密度增加, 过钝化电位降低, 即钝化膜的耐蚀性降低; 此外, 硫代硫酸根使钝化膜中的Cr含量降低而Ni 含量提高, 硫代硫酸根会在合金表面电化学还原成为更低价态的硫进入钝化膜, 使钝化膜中的硫化物增多也是导致钝化膜防护性能变差的原因; 而硫酸根与钝化膜的作用较弱, 对钝化膜的影响较小.
Alloy 690 is one of the steam generator (SG) tubing materials in pressurized water reactors (PWR). The degradation of this alloy in alkaline solutions containing reduced sulfur is one of the main causes of stress corrosion cracking. In this study, the corrosion behavior of Alloy 690 in simulated alkaline crevice chemistry at 300 ℃ was investigated using polarization curves, scanning electron microscopy (SEM), Auger electron spectroscopy (AES), and time-of-flight secondary ion mass spectrometry (ToF-SIMS). Studying the effect of thiosulfate and sulfate on the properties of the passive film formed on Alloy 690 showed that the film formed at 300 ℃ was composed of an outer porous layer and an inner compact layer, and that the ion species presented in chloride solutions had a significant impact on the corrosion behavior of the alloy. The addition of thiosulfate increased the passive current density, decreased the transpassive potential, and therefore lowered the corrosion resistance. The presence of thiosulfate also led to a decrease in Cr levels and an increase in Ni levels in the passive layer. The thiosulfate can reduce sulfur at the film surface and enter into the film, causing an increased sulfide content in the film which decreases the corrosion resistance. However, experiments using sulfate had no obvious effect on film degradation as the ion had minimal interaction with the film
The Research of SSL VPN-Based Access Mechanism
基于SSL VPN接入机制的研究

OU Yang-Kai,ZHOU Jing-Li,XIA Tao,YU Sheng-Sheng College of Computer Science & Technology,Huazhong University of Science,Technology,Wuhan,
欧阳凯
,周敬利,夏涛,余胜生

计算机科学 , 2005,
Abstract: SSL VPN is a safety network framework implemented on the basis of SSL safety mechanism and the cur- rent firewall system. The PHI (Private Handahake Information) Protocol put forth in this paper is the control proto- col particularly designed for SSL VPN, by whih the safety protection of SSL VPN is strengthened and a more credi- bly transparent safety tunnel is built. This paper details the system design of PHI-SSL VPN and the principle of PHI. Moreover, it discusses the likelihood of the attack case.
The Algebraic Structure and Poisson Integral Procedure of Dynamic Equation for Relativistic Birkhoofs Systems
相对论性Birkhoff系统动力学方程的代数结构与Poisson积分方法

FU Jing-Li,
傅景礼

数学物理学报(A辑) , 2001,
Abstract: Defining Pfaff action of relativistic systems, The Pfaff-Birkhoof principle and the Birkhoof's equation for relativistic systems are obtained. We prove that the au-tonomous Birkhoof equation of relativistic systems and the semi-autonomous Birkhoof's e-quation for relativistic systems have compatible algebraic structure and Lie's algebraic structure; and the non-autonomous Birkhoof's equation for the relativistic systems haven't algebraic structure in general. We study a special non-autonomous Birkhoof's equation for relativistic systems having compatible algebraic structure and Lie's admitted algebraic structure . The Poisson's integrals procedure of the Birkhoof's equation for relativistic systems are given. At last an example is given.
Conformal invariance and conserved quantities of Appell systems under second-class Mei symmetry

Luo Yi-Ping,Fu Jing-Li,

中国物理 B , 2010,
Abstract: We propose a new concept of the conformal invariance and the conserved quantities for holonomic systems with quasi-coordinates. A one-parameter infinitesimal transformation group and its infinitesimal transformation vector of generators for holonomic systems with quasi-coordinates are described in detail. The conformal factor in the determining equations of the Lie symmetry is found. The necessary and sufficient conditions of conformal invariance, which are simultaneously of Lie symmetry, are given. The conformal invariance may lead to corresponding Hojman conserved quantities when the conformal invariance satisfies some conditions. Finally, an illustration example is introduced to demonstrate the application of the result.
Conformal invariance and conserved quantities of Birkhoff systems under second-class Mei symmetry

Luo Yi-Ping,Fu Jing-Li,

中国物理 B , 2011,
Abstract: This paper proposes a new concept of the conformal invariance and the conserved quantities for Birkhoff systems under second-class Mei symmetry. The definition about conformal invariance of Birkhoff systems under second-class Mei symmetry is given. The conformal factor in the determining equations is found. The relationship between Birkhoff system's conformal invariance and second-class Mei symmetry are discussed. The necessary and sufficient conditions of conformal invariance, which are simultaneously of second-class symmetry, are given. And Birkhoff system's conformal invariance may lead to corresponding Mei conserved quantities, which is deduced directly from the second-class Mei symmetry when the conformal invariance satisfies some conditions. Lastly, an example is provided to illustrate the application of the result.
Lie symmetry and Mei conservation law of continuum system

Shi Shen-Yang,Fu Jing-Li,

中国物理 B , 2011,
Abstract: Lie symmetry and Mei conservation law of continuum Lagrange system are studied in this paper. The equation of motion of continuum system is established by using variational principle of continuous coordinates. The invariance of the equation of motion under an infinitesimal transformation group is determined to be Lie-symmetric. The condition of obtaining Mei conservation theorem from Lie symmetry is also presented. An example is discussed for applications of the results.
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