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The principle of relativity, kinematics and algebraic relations

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Science china(Physics,Mechanics & Astronomy) 2010年第4期53卷 591-597页

作者： GUO HanYing1, HUANG ChaoGuang2,3, WU HongTu4 & ZHOU Bin5 1Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, china 2Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, china 3Theoretical Physics Center for Science Facilities, Chinese Academy of Sciences, Beijing 100049, china 4Department of Mathematics, Capital Normal University, Beijing 100048, china 5Department of Physics, Beijing Normal University, Beijing 100875, china 1. Institute of Theoretical Physics Chinese Academy of Sciences Beijing 100190 China2. Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China3. Theoretical Physics Center for Science Facilities Chinese Academy of Sciences Beijing 100049 China4. Department of Mathematics Capital Normal University Beijing 100048 China5. Department of Physics Beijing Normal University Beijing 100875 China

Based on the relativistic principle and the postulate of universal invariant constants (c, l), all kinematic symmetries can be set up as the subsets of the Umov-Weyl-Fock-Hua transformations for the inertial motions. ... 详细信息

关键词： principle of relativity with (c l) Umov-Weyl-Fock-Hua transformations kinematics special relativity triple

TGF-β_1 in retinal ganglion cells in rats with chronic ocular hypertension: its expression and anti-apoptotic effect

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International Journal of Ophthalmology(English edition) 2011年第4期4卷 396-401页

作者： Yong-Jian Tao 1, Dian-Wen Gao 1, Miao Yu 2 1Department of Ophthalmology, Shengjing Hospital of china Medical University, Shenyang 110004, Liaoning Province, china 2 Shenyang Pharmaceutical University, Shenyang 110016, Liaoning Province, china Department of Ophthalmology Shengjing Hospital of China Medical University Shenyang 110004 Liaoning Province China Shenyang Pharmaceutical University Shenyang 110016 Liaoning Province China

AIM: To investigate the anti-apoptotic effect of transforming growth factor beta-1 (TGF-β1) on chronic ocular hypertension. METHODS: The expression of TGF-β1 in retinal ganglion cells (RCGs) was measured using the immunohistochemiscal S-P method and real-time PCR in the normally control group, the ocular hypertension group (experimental group A), the ocular hypertension plus antibody intervention group (experimental group B) and the ocular hypertension plus antigen intervention group (experimental group C) at 1, 2, 3 and 4 weeks postoperatively. The count of apoptotic RCGs was measured using the TUNEL method. RESULTS: The expression of TGF-β1 was significantly higher in experimental group C than that in other three groups (P<0.05). The expression was the lowest in experimental group B (4.17%). A statistically significant difference was noted between the four groups (P <0.01). The count of apoptotic RCGs was statistically significantly lower in experimental group C than that in the experimental groups A and B (P <0.01). A statistically significant difference was noted in the count of apoptotic RCGs between these three experimental groups (P <0.01). CONCLUSION: TGF-β1 can inhibit the apoptosis of RCGs in rats with chronic ocular hypertension.

关键词： glaucoma nerve protect TGF-β1 retinal ganglion cells chronic ocular hypertension

Effective stability for generalized Hamiltonian systems

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Science china Mathematics 2004年第5期47卷 675-686页

作者： CONG Fuzhong & LI YongSchool of Mathematics and Information Science, Shandong Institute of Business and Technology, Yantai 264005, china Office of Mathematics, Changchun Flight Academy of the Air Force, Changchun 130022, china Department of Mathematics, Jilin University, Changchun 130012, china 1. School of Mathematics and Information Science Shandong Institute of Business and Technology 264005 Yantai China 2. Office of Mathematics Changchun Flight Academy of the Air Force 130022 Changchun China 3. Department of Mathematics Jilin University 130012 Changchun China

An effective stability result for generalized Hamiltonian systems is obtained by applying the simultaneous approximation technique due to Lochak. Among these systems,dimensions of action variables and angle variables ... 详细信息

关键词： Effective stability, generalized Hamiltonian systems, Lochak's technique.

The structure of a class of Z-local rings

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Science china Mathematics 2006年第10期49卷 1297-1302页

作者： WU Tongsuo & LU Dancheng Department of Mathematics , Shanghai Jiao Tong University, Shanghai 200240, china Department of Mathematics, Suzhou University, Suzhou 215006, china Department of Mathematics Shanghai Jiao Tong University Shanghai 200240 China Department of Mathematics Suzhou University Suzhou 215006 China

A local ring R is called Z-local if J(R)= Z(R) and J(R)2= 0. In this paper the structure of a class of Z-local rings is determined.

关键词： Z-local ring, structure, polynomial rings.

BIFURCATION RESULTS FOR A SEMILINEAR SCHRDINGER EQUATION WITH INDEFINITE LINEAR PART

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Acta Mathematica Scientia 2004年第3期24卷 493-498页

作者：张正杰卢伟明 Laboratory of Nonlinear Analysis Department of Mathematics Central China Normal University Wuhan 430079 China Institute of Chemical Technology Zhengzhou Institute of Technology Zhengzhou 450052 Chinahis paper studies the following semilinear Schrodinger problem It is proven that there exists a bifurcation branch of solutions for the above problem when g(x) can possibly vanish except for a bounded domain ΩRN.

This paper studies the following semilinear Schrodinger problem It is proven that there exists a bifurcation branch of solutions for the above problem, when g(x) can possibly vanish except for a bounded domain Ω RN.

关键词： Schrodinger equation branch of solutions bifurcation

Interim Measures for the Tax Preservation and Enforcement Measures of the Customs of the People's Republic of china

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china's Foreign Trade 2009年第19期000卷 68-69页

作者： General Administration of Customs of the People’s Republic of china

The Interim Measures for the Tax Preservation and Enforcement Measures of the Customs of the People's Republic of china,which was deliberated and adopted at the executive meeting of the General Administration of Custo... 详细信息

关键词：中国海关执法措施税收共和国海关总署

Complex variable method for plane elasticity of icosahedral quasicrystals and elliptic notch problem

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Science china(Physics,Mechanics & Astronomy) 2008年第7期51卷 773-780页

作者： LI LianHe1,2 & FAN TianYou1 1 Department of Physics, Beijing Institute of Technology, Beijing 100081, china 2 College of Mathematics Science, Inner Mongolia Normal University, Hohhot 010022, china Department of Physics Beijing Institute of Technology Beijing 100081 China College of Mathematics Science Inner Mongolia Normal University Hohhot 010022 China

The complex variable method for the plane elasticity theory of icosahedral quasicrystals is developed. Based on the general solution obtained previously, complex representations of stress and displacement components of phonon and phason fields in the quasicrystals are given. With the help of conformal transformation, an analytic solution for the elliptic notch problem of the material is presented. The solution of the Griffith crack problem can be observed as a special case of the results. The stress intensity factor and energy release rate of the crack are also obtained.

关键词： icosahedral quasicrystals plane elasticity elliptic notch complex variable method

Goethite　Morphologies　of　Some　Soils　in　South　of　Central　china

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Pedosphere 1996年第3期 193-200页

作者： LIU FAN XU FENG-LIN LI XUE-YUAN and HE HUI(Huazhong Agricultural Ursiversity, Wuhan 430070 china)

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关键词： goethites morphology soils surface adsorption surface charge

NUMERICAL SIMULATION AND COMPARISON OF WATER INTAKE-OUTLET METHODS IN POWER PLANTS

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Journal of Hydrodynamics 2007年第5期19卷 623-629页

作者： CHENG You-liang YING Bo-fen School of Energy and Power Engineering North China Electric Power University Baoding 071003 China

The eclipsed form arrangement and march-past method of water intake-outlet arrangements in power plants were researched by 3-D numerical simulation based on the k-e two-equation turbulence model. Firstly, the flowing characteristics of eclipsed form arrangement were analyzed and the effects of some main factors on inlet temperature were investigated. The simulation results are basically in agreement with those of the previous experiments. Then, by comparing the inlet temperature of the above two intake-outlet methods, the superiority and its existent conditions of the eclipsed form were examined.

关键词： method water simulation eclipsed form arrangement,intake-outlet inlet temperature,march-past numerical