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On the periodic solutions of a type of differential-iterative equations

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Chinese Science Bulletin 1998年第3期43卷 204-206页

作者： GE Weigao 1, LIU Zhengrong 2.and YU Yuanhong 3.1. department of Applied mathematics, Beijing Institute of Technology, Beijing 100081,{2. 2. department of mathematics, yunnan University, kunming 650091,{2. 3. Institute of Applied mathematics, C department of Applied mathematics Beijing Institute of Technology Beijing China department of mathematics Yunnan University Kunming China Institute of Applied mathematics Chinese Academy of Sciences Beijing China

Sufficient conditions for the existence of periodic solutions to a type of nonautonomous differential_iterative equations are given.

关键词： differential_iterative equation periodic solution fixed point.

The right dual of left C-rpp semigroups

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Chinese Science Bulletin 1997年第19期42卷 1599-1603页

作者： GUO Yuqidepartment of mathematics, {2. University,{3., china department of mathematics Yunnan University Kunming China

SEMIGROUP S is said to be rpp (dually, lpp) if every principal right ideal aS^1(S^1a) of S, re-garded as a right (left)S^1-system, is projective. The semigroup which is both rpp and lpp is said to be abundant. These kinds of generalized regular semigroups have aroused wideattention. The Green’s,relations (~*-Green’s relations introduced by Pastijn) have formed avery useful tool in study on regular (abundant) semigroups. In order to develop the study onrpp semigroups a step further, we introduced the so-called (1)-Green’s,relation which

关键词： rpp semigroups left (right) C-rpp semigroups. (I)-Green’s relations.

Abundant Semigroups with a Multiplicative Adequate Transversal

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Acta Mathematica Sinica,English Series 2002年第2期18卷 229-244页

作者： GUO Xiao Jiang department of mathematics.{2. University.{3. 650091,P.R.china department of mathematics Yunnan University Kunming P. R. China

The aim of this paper is to investigate abundant semigroups with a multiplicative adequate *** properties and characterizations for such semigroups are *** particular. we establish the structure of this class of abundant semigroups in terms of left normal bands,right normal braids and adequate semigroups with some simple Compatibility *** apply this structure to some special cases.

关键词： Abundant semigroup Adequate semigroup Left(Right)normal band

Hemin-mediated Hemolysis in Erythrocytes:Effects of Ascorbic Acid and Glutathione

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Acta Biochimica et Biophysica Sinica 2006年第1期38卷 63-69页

作者： Shu-De LI~(1,2.,Yan-Dan SU~3.Ming LI~1,and Cheng-Gang ZOU~(1*) ~1 School of Life Sciences,yunnan University,kunming {2.,china ~2.department of Biochemistry and~3.department of Clinical Chemistry,kunming Medical College.kunming 65003.,china School of Life Sciences Yunnan University Kunming 650091 China department of Biochemistry Kunming Medical College Kunming 650031 China department of Clinical Chemistry Kunming Medical College Kunming 650031 China

In the present work,we investigated the effect of ascorbic acid and glutathione on hemolysisinduced by hemin in *** acid not only enhanced hemolysis,but also induced formationof thiobarbituric acid-reactive substances in the presence of *** has been shown that glutathioneinhibits hemin-induced hemolysis by mediating hemin *** depleted of glutathionebecame very sensitive to oxidative stress induced by hemin and ascorbic acid.H2.2.as involved in hemin-mediated hemolysis in the presence of ascorbic ***,a combination of glutathione and ascorbicacid was more effective in inhibiting hemolysis induced by hemin than glutathione *** andintracellular ascorbic acid exhibited a similar effect on hemin-induced hemolysis or inhibition of hemin-induced hemolysis by *** current study indicates that ascorbic acid might function as anantioxidant or prooxidant in hemin-mediated hemolysis,depending on whether glutathione is available.

关键词： erythrocyte ascorbic acid hemin glutathione H2.2

Interannual variability of Antarctic Oscillation and its influence on East Asian climate during boreal winter and spring

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Science china Earth Sciences 2006年第5期49卷 554-560页

作者： FAN Ke1,2.3.& WANG Huijun2.1. Nansen-Zhu International Research Center, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 10002.,{3. 2. department of Atmospheric Science, {2. University, kunming 650091,{3. 3. Graduate University of the Chinese Academy of Sciences, Beijing 100049,{3. Nansen-Zhu International Research Center Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China department of Atmospheric Science Yunnan University Kunming China Graduate University of the Chinese Academy of Sciences Beijing China

The interannual variability of Antarctic Oscillation (AAO) and its influence on East Asian climate during both boreal winter and spring are addressed. The results show that the positive AAO anomaly decreases the cold activity over East Asia during both boreal winter and spring. AAO-related barotropic meridional teleconnection from Antarctic to Arctic is found through analysis of mean me- ridional circulations. This meridional teleconnection is remarkable over Eurasia during boreal winter and over the Pacific Ocean during boreal spring. The results also show that zonal mean zonal wind at high latitudes in Southern Hemisphere has well positive correlation with that of Eurasia during boreal winter and has negative correlation with Pacific North American teleconnection (PNA) during boreal spring, which again display the meridional teleconnection. Thus, local meridional teleconnection is a possible linkage for interaction of circulations at mid-high latitudes between both hemispheres.

关键词： Antarctic Oscillation, Eurasian west wind, meridional teleconnection, mean meridional circulation.

Regularity of the Attractor for the Dissipative Hamiltonian Amplitude Equation Governing Modulated Wave Instabilities

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Acta Mathematicae Applicatae Sinica 2002年第2期18卷 263-272页

作者： Zheng-de Daidepartment of mathematics, {2. University,{3., china department of mathematics Yunnan Normal University Kunming China

In the present paper, the existence of global attractor for dissipative Hamiltonian amplitude equation governing the modulated wave instabilities in E0 is considered. By a decomposition of solution operator, it is sho... 详细信息

关键词： Regularity of Global attractor Hamiltonian amplitude equation

Exponential attractors of the nonlinear wave equations

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Chinese Science Bulletin 1998年第16期43卷 1331-1335页

作者： DAI Zhengde 1 and MA Dacai 2.1. department of mathematics, {2. University, kunming 65003., china 2. department of mathematics, Shangrao Teachers College, Shangrao 3.4000, china department of mathematics Yunnan University Kunming China department of mathematics Shangrao Teachers College Shangrao China

The (E, E)-type exponential attractors for the nonlinear wave equation were obtained by using the decomposition of operators and finite covering *** results solves the open problem of Eden et al.

关键词： nonlinearity wave equations exponential attractors.

Uniqueness results for monopolar fluids

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Communications in Nonlinear Science and Numerical Simulation 2000年第1期5卷 21-23页

作者： Guoguang LIN department of mathematics, {2. University,{3., china, e-mail: gglin@ynu. edu. cn department of mathematics Yunnan University Kunming 650091 China

We prove a unique property for weak solutions of monopolar fluid equations.

关键词： monopolar fluid equations non-Newtonian fluids uniqueness of weak solutions

A Series of Convex Functions on a Banach Space

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Acta Mathematica Sinica,English Series 1998年第1期14卷 77-84页

作者： Zheng Xiyin department of mathematics, {2. University,{3., china

A series of convex functions on a Banach space is studied. The generalizations of the Moreau-Rockafellar theorem are given. As its application, the partial generalization of the Kuhn- Tucker theorem is obtained.

关键词： Pointwise convergence Locally uniform convergence Subdifferential Moreau-Rockafellar theorem Kuhn-Tucker theorem