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Influence of Microwave Radiation on Properties and Structure of Fe_2._3/SO_4^(2.) Solid Superacid Catalyst

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Journal of Materials Science & Technology 1996年第4期12卷 307-311页

作者： Yinan NING (kunming Institute of Precious Metals, kunming 650{2.1, {{2.)Jiaqiang WANG and Pinjie HONG(yunnan university, kunming 650091. china) yunnan UNIV KUNMING 650091PEOPLES R CHINA

The microwave radiation method was introduced to prepare the Fe_2._3/SO solid *** structure and properties were investigated by means of X-ray diffraction and infrared spectrum analyses as well as measurement of magnetic susceptibility and rate of esterification. The structure of the superacids prepared in microwave field can be crystalline or non-crystalline, the latter has not been reported yet in literatures. Comparing with the traditional superacid, the non-crystalline Fe2.3/SO superacid prepared in microwave field has the highest magnetic susceptibility and catalytic activity. The di-coordination of Fe2.3 and SO and the S=O bi-bond were reinforced by microwave radiation, which is favorable for increasing the acid intensity of the Fe2.3/SO catalyst

关键词： SO Influence of Microwave Radiation on Properties and Structure of Fe2.3/SO4 Solid Superacid Catalyst Fe

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, yunnan university, kunming 650091. 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.

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, yunnan university, kunming 650091. 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

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.yunnan university.{{2. 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

Microstructure Evolution in Laser RS Co-base Metastable Alloy

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Chinese Journal of Lasers 1995年第5期B4卷 475-480页

作者： WANG Anan CHENG Shunqi GUO Zhiyao (kunming university of Science and Technology,kunming 650093,china)YUN Bo (Micoanalysis Center,yunnan university,kunming 650091.china) yunnan Univ Kunming China

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关键词： laser rapid solidification eutectic carbide defects

The Nature of Bonding in PtN

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Chinese Chemical Letters 1998年第7期9卷 687-690页

作者： Xiao Guang XIE Xian Jun BI Huai CAO Shu Shan DAI (Modem Biological Center, yunnan university, kunming {{2.(Department of Chemistry, yunnan Normal university, kunming 65009{2.(Department of Chemistry, yunnan university, kunming {{2. yunnan Univ Modern Biol Ctr Kunming 650091 Peoples R China yunnan Normal Univ Dept Chem Kunming 650092 Peoples R China yunnan Univ Dept Chem Kunming 650091 Peoples R China

The nature of bonding in the title compound has been studed by using CASSCF techniques. The ground state of PtN is found to be (2.Pi state arising primarily from: 1 sigma(2.2.sigma(2.1 pi(4)1 delta(4)3 sigma(2.2.pi(1) configuration, which forms triple bond between Pt and N atoms tone sigma, two pi). The lowest quartet state is (4)Sigma(-) State which has the configuration: ...1 sigma(2.2.sigma(2.1 pi(4)1 delta(4)3 sigma(1)2.pi(2. and lies higher than the ground state by 0.43eV.

关键词： PtN nature of bonding molcular constants CASSCF

3D visualization model and key techniques for digital mine

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中国有色金属学会会刊：英文版 2011年第S3期21卷 748-752页

作者： JIN Bao-xuan1,FANG Yuan-min2.SONG Wei-wei2.1. {2. Provincial Geomatics Centre, kunming 650034, {2. 2. Faculty of Land Resource Engineering, kunming university of Science and Technology, kunming 650093, {2. [a] yunnan Provincial Geomatics Centre Kunming 650034 China [b] Faculty of Land Resource Engineering Kunming University of Science and Technology Kunming 650093 China

Digital mine is the inevitable outcome of the information processing, and is also a complicated system engineering. Firstly, for the 3D visualization application of the digital mine, the ground and underground integrative visualization framework model was proposed based on the mine entity database. So, the visualization problem was availably resolved, as well as the professional analytical ability was improved. Secondly, aiming at the irregularities, non-uniformity, dynamics of mine entities, mix modeling method based on the entity character was put forward, in which 3D expression of mine entities was realized. Lastly, the 3D visualization project for a copper mine was experimentally studied. Satisfactory results were acquired, and the rationality of visualization model and feasibility of 3D modeling were validated.

关键词： digital mine three dimension visualization framework model spatial data modeling

The Nature of Bonding in IrC

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Chinese Chemical Letters 1998年第12期9卷 0-0,0-0页

作者： Xiao Guang XIE Huai CAO (Modem Biological Center, yunnan university, kunming {{2.Xian Jun BI (Department of Chemistry, yunnan Normal university, kunming 65009{2.Shu Shan Dai (Department of Chemistry, yunnan university, Kunndng {{2. yunnan Univ Modern Biol Ctr Kunming 650091 Peoples R China yunnan Normal Univ Dept Chem Kunming 650092 Peoples R China yunnan Univ Dept Chem Kunming 650091 Peoples R China

The nature of bonding in the title compound has been stUdied by using CASSCF andFOCI techniques. The ground state of IrC has been found to be 2. arising primarilyfrom:.. 1σ2.2.2.1π4 1δ3 3σ2.configuration, which forms a triple bond between Ir and C atoms (one σ;two π). The lowest quartet state is 4Φ state which has the configuration:... 1σ2.2.2.1π4 1δ3 2.1 3σ2.andlies higher than the ground state by 1 .2.eV. The molecular constants of the ground state calculatedat CASSCF level by using Morse's mode are: Re=1.6904A, De=4.86eV, We=1139cm-1, andB0=0.52.9cm-1 comparable with the spectrum values (Re=1 .6858A, De=6.44 eV, We=1051cm-1and B0=0.52.1 cm-1).

关键词： Nature of bonding IrC molecular constants CASSCF

Asymmetric interaction will facilitate the evolution of cooperation

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Science china(Life Sciences) 2010年第8期53卷 1041-1046页

作者： WANG RuiWu1, HE JunZhou1,2. WANG YaQiang1,2. SHI Lei1,3 & LI YaoTang1,2.1 State Key Laboratory of Genetic Resources and Evolution, kunming Institute of Zoology, Chinese Academy of Science, kunming 6502.3, {2. 2.School of Mathematics and Statistics, yunnan university, kunming 650091. china 3 Statistics and Mathematics College, yunnan university of Finance and Economics, kunming 6502.1, {2. 1. State Key Laboratory of Genetic Resources and Evolution Kunming Institute of Zoology Chinese Academy of Science Kunming 650223 China2. School of Mathematics and Statistics Yunnan University Kunming 650091 China3. Statistics and Mathematics College Yunnan University of Finance and Economics Kunming 650221 China

Explaining the evolution of cooperation remains one of the greatest problems for both biology and social science. The classical theories of cooperation suggest that cooperation equilibrium or evolutionary stable strategy between partners can be maintained through genetic similarity or reciprocity relatedness. These classical theories are based on an assumption that partners interact symmetrically with equal payoffs in a game of cooperation interaction. However, the payoff between partners is usually not equal and therefore they often interact asymmetrically in real cooperative systems. With the Hawk–Dove model, we find that the probability of cooperation between cooperative partners will depend closely on the payoff ratio. The higher the payoff ratio between recipients and cooperative actors, the greater will be the probability of cooperation interaction between involved partners. The greatest probability of conflict between cooperative partners will occur when the payoff between partners is equal. The results show that this asymmetric relationship is one of the key dynamics of the evolution of cooperation, and that pure cooperation strategy (i.e., Nash equilibrium) does not exist in asymmetrical cooperation systems, which well explains the direct conflict observed in almost all of the well documented cooperation systems. The model developed here shows that the cost-to-benefit ratio of cooperation is also negatively correlated with the probability of cooperation interaction. A smaller cost-to-benefit ratio of cooperation might be created by the limited dispersal ability or exit cost of the partners involved, and it will make the punishment of the non-cooperative individuals by the recipient more credible, and therefore make it more possible to maintain stable cooperation interaction.

关键词： Hawk–Dove game evolutionarily stable strategy asymmetric cooperation mixed strategy Nash equilibrium