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Bounded Projections and Duality on Spaces of Holomorphic Functions in the Unit Ball of (?)~n

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Acta Mathematica Sinica,English Series 1995年第1期11卷 29-36页

作者： Ren Fuyao Department of Mathematics Fudan university Shanghai,2.0433{2. Xiao Jianbin Department of Mathematics{2. changsha,410081{2. harm.showa-u.ac.jp

In this paper three Banach spaces A(ф),A(ф)and A~1(ф)of functions holomor- phic in the unit ball B of ■~n are *** exhibit bounded projections from C(B)onto A(ф),from L~1(B)onto A~1(ф),and from L~∞(B)onto A(ф).... 详细信息

关键词： Bounded Projections and Duality on Spaces of Holomorphic Functions in the Unit Ball of Math Ball

Catalytic Acylation of Ethylidenecyclohexane over Zeolite Catalysts

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应用化学 2002年第4期19卷 310-312页

作者： ZHAO Zhen Hua (Department of Chemistry,hunan normal {{2.,changsha 410081) Department of Chemistry Hunan Normal University Changsha 410081

Some environmentally friendly catalysts such as HY and H β zeolites, various cation exchanged β zeolites, and some other solids have been used in the acylation reaction of ethylidenecyclohexane with acetic anhydride at room temperature to synthesize 3 (1 cyclohexenyl) 2.butanone instead of conventional catalysts. The effect of the amount of HY zeolite used on the acylation reaction was investigated. The yield of the acylated product was 72. in the case of n (ethylidenecyclohexane)∶ n (acetic anhydride)∶ m (HY zeolite)=1 mmol∶10 mmol∶0 100 g, reaction temperature: 2. ℃, and reaction time:2.h. The regenerated HY zeolite showed almost the same catalytic activity as the fresh zeolite.

关键词：催化酰化亚乙基环己烷沸石催化剂

Weighted composition operators between μ-Bloch spaces on the unit ball

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Science china Mathematics 2005年第10期48卷 1349-1368页

作者： ZHANG Xuejun~1 & XIAO Jianbin~2.1. College of Mathematics and Computer Science,hunan {2. {2.,changsha 410006,china(email:xuejunttt@2.3. net) 2. The School of Science,Hangzhou Dianzi {2.,Hangzhou 310037,china 1. College of Mathematics and Computer Science Hunan Normal University 410006 Changsha China 2. The School of Science Hangzhou Dianzi University 310037 Hangzhou China

In this paper,necessary and sufficient conditions are given for the weighted composition operator T_(ψ,ψ) to be bounded or compact from the space β_μ to β_ν (or β_(μ,0) to β_(ν,0) ) on the unit ball of C^***... 详细信息

关键词： μ-Bloch space, weighted composition operator, boundedness, compactness.

Distant hybridization leads to different ploidy fishes

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Science china(Life Sciences) 2010年第4期53卷 416-425页

作者： LIU ShaoJun Key Laboratory of Protein Chemistry and Fish Developmental Biology of Education Ministry of china, College of Life Sciences, hunan normal university,{{2., china 1. Key Laboratory of Protein Chemistry and Fish Developmental Biology of Education Ministry of china College of Life Sciences Hunan Normal University Changsha 410081 China

Distant hybridization makes it possible to transfer the genome of one species to another, which results in changes in phenotypes and genotypes of the progenies. This study shows that distant hybridization or the combination of this method with gynogenesis or androgenesis lead to different ploidy fishes with genetic variation, including fertile tetraploid hybrids, sterile triploid hybrids, fertile diploid hybrids, fertile diploid gynogenetic fish, and their derived progenies. The formations of the different ploidy fishes depend on the genetic relationship between the parents. In this study, several types of distant hybridization, including red crucian carp (Carassius auratus red var.) (2.=100, abbreviated as RCC) (♀)×common carp (Cyprinus carpio L.) (2.=100, abbreviated as CC) (♂), and RCC (2.=100) (♀)×blunt snout bream (Megalobrama amblycephala) (2.=48, abbreviated as BSB) (♂) are described. In the distant hybridization of RCC (♀)×CC (♂), bisexual fertile F3–F18 allotetraploid hybrids (4n=2.0, abbreviated as 4nAT) were formed. The diploid hybrid eggs and diploid sperm generated by the females and males of 4nAT developed into diploid gynogenetic hybrids and diploid androgenetic hybrids, respectively, by gynogenesis and androgenesis, without treatment for doubling the chromosome. Improved tetraploid hybrids and improved diploid fishes with genetic variation were derived from the gynogenetic hybrid line. The improved diploid fishes included the high-body RCC and high-body goldfish. The formation of the tetraploid hybrids was related to the occurrence of unreduced gametes generated from the diploid hybrids, which involved in premeiotic endoreduplication, endomitosis, or fusion of germ cells. The sterile triploid hybrids (3n=150) were produced on a large scale by crossing the males of tetraploid hybrids with females of diploid fish (2.=100). In another distant hybridization of RCC (♀)×BSB (♂), different ploidy fishes were obtained, including diploid bisexual fertile natu

关键词： distant hybridization genetic variation gynogenesis androgenesis diploid triploid tetraploid evolutionary biology genetic breeding

In Situ Acquisition of Equivalent Circuit Parameters of Crystal Resonance during Copper Deposition and Dissolution in Acidic Solution by Electrochemical Quartz Crystal Impedance System

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Chinese Chemical Letters 1999年第1期10卷 73-76页

作者： Qing Ji XIE Xiao Lian SUN Xiao Lan GU Hong Wei LIU You Yu ZHANG Shou Zhuo YAO(Chemical Research Institute. hunan normal university,changsha {{2.)(Chemistry Department,hunan normal university, changsha 410081) hunan normal Univ Chem Res Inst Changsha 410081 Peoples R China hunan normal Univ Dept Chem Changsha 410081 Peoples R China

Electrochemical quartz crystal impedance system (EQCIS) which allows in situ dynamic quartz crystal impedance measurement in an electrochemical experiment was developed by combining an HP 4395A Network/Spectrum/Impedance analyzer with an EG&G M2.3 potentiostat. Equivalent circuit parameters of crystal resonance change significantly during electrodeposition and dissolution of copper in 0.1 mol/L H2.O4 aqueous solution in a cyclic potential sweep experiment, which is explained with an overall picture of mass loading, solution density and viscosity, etc..

关键词： in situ quartz crystal impedance measurement equivalent circuit parameters electrodeposition copper

Asymptotic Behavior of Forced Nonlinear Delay Differential Equations with Impulses

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Acta Mathematica Sinica,English Series 2000年第4期16卷 565-572页

作者： Jiaowan Luo Institute of Sciences. changsha Railway university. changsha 410075. P. R. china Jianhua Shen Department of Mathematics. hunan normal university. changsha 410081. P. R. china Institute of Sciences Changsha Railway University Changsha 410075 P. R. China Department of Mathematics Hunan Normal University Changsha 410081 P. R. China

The purpose of this paper is to investigate the asymptotic behavior of solutions of the forced nonlinear delay differential equations with impulses x’(t)+sum from i=1 to n(p_i(t)f(x(t-т_i))=h(t)). t≠t_k, x(t_k^+)-x(t_k)=b_kx(t_k). Our results. which hold for linear and nonlinear equations, forced and unforced equations, impulsive and nonimpulsive equations. improve and generalize the known results recently obtained in [8].

关键词： Asymptotic behavior Delay differential equation Impulsive perturbation

Catalytic Acylation of Anisole over Some Zeolites

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Chemical Research in Chinese Universities 2000年第3期16卷 191-197页

作者： ZHAO Zhen hua (College of Chemistry and Chemical Technology, hunan normal university, changsha 410081, P. R.{{2.) (Received Sept. {2., 1999) hunan normal Univ Coll Chem & Chem Technol Changsha 410081 Peoples R China

Methoxyacetophenone(4 MAP) was synthesized by the acylation of anisole with acetic anhydride in the presence of HY zeolite. The addition of an appropriate amount of some solvent such as dichloromethane, chloroform, carbon disulfide or chlorobenzene to the reaction system can improve the yield of the acylated product to a certain extent. HY zeolite used can be recovered, and reused after being regenerated, obtaining almost the same yield of 4 MAP as the fresh zeolite.

关键词： Acylation HY zeolite Catalyst Anisole Acetic anhydride Synthesis Aromatic ketone

Hopping Wave Function in Quantum Kicked Systems

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原子与分子物理学报 2003年第1期20卷 107-113页

作者： CHONG Gui-shu,HAI Wen-huaCorrespondence Author (1.Department of Physics, hunan normal university, changsha, {{2., china) Department of Physics Hunan Normal University Changsha 410081

A model of a kicked particle in an infinite potential well is studied. We presented the wave functions of the system applying a direct perturbation method. Theoretical analyses and numerical calculations show that the wave function is discontinuous across each kicking instant. As an extension of this result, we find that the wave function of any periodically kicked system usually has this property. Therefore, at each kicking instant, the wave function chooses randomly between the limits on either side and may be hopping.

关键词：原子物理学结构波函数量子体系

Mean Convergence of Lagrange Type Interpolation on an Arbitrary System of Nodes

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Acta Mathematicae Applicatae Sinica 2002年第2期18卷 277-288页

作者： Ying-guang ShiDepartment of Mathematics, hunan normal university, changsha 410081,{{2. & Academy of Mathematics and System Sciences, Chinese Academy of Sciences, Beijing 100080,{{2. Department of Mathematics Hunan Normal University Changsha 410081 China Academy of Mathematics and System Sciences Chinese Academy of Sciences Beijing 100080 China

Sufficient conditions of convergence and rate of convergence for Lagrange type interpolation in the weighted Lp norm on an arbitrary system of nodes are given.

关键词： Lagrange type interpolation convergence rate of convergence