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Z-Graded Lie Superalgebras with Depth One over Fields of Prime Characteristic

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Acta Mathematica Sinica,English Series 2002年第4期18卷 687-700页

作者： Yong Zheng ZHANG Department of Mathematics. Northeast Normal university. Changchun 130024. P. R. China Department of Mathematics Northeast Normal University Changchun P. R. China

Let F be a field of characteristic p>3, and L=_(i≥-1) L_i the finite-dimensional transitive Z-graded simple Lie superalgebra over F. In this paper L is determined if the Z-graded Lie superalgebra L_(-1) L_O is isomo... 详细信息

关键词： Lie superalgebra Exterior algebra Field of prime characteristic

On E-Unitary Regular Semigroups

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Acta Mathematica Sinica,English Series 2002年第3期18卷 565-578页

作者： Yong Hua LI Department of Mathematics. South, China Normal university. Guangzhou 510631, P. R. China Department of Mathematics South China Normal University Guangzhou P. R. China

In this paper we define a concept of a PO-sextet and describe a structure of E-unitary regular semigroups.

关键词： Orthodox semigroup E-unitary regular semigroup Sextet-set PO-semigroup

The Star Chromatic Numbers of Some Planar Graphs Derived from Wheels

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Acta Mathematica Sinica,English Series 2002年第1期18卷 173-180页

作者： LI De Ming Department of Mathematics. Capital Normal university. Beijing 100037. P. R. China Department of Mathematics Capital Normal University Beijing P. R. China

The notion of the star chromatic number of a graph is a generalization of the chromatic number. In this paper. we calculate the star chromatic numbers of three infinite families of planar graphs. The first two families are derived from a 3-or 5-wheel by subdivisions. their star chromatic numbers being 2+2/(2n + 1). 2+3/(3n + 1)and 2+3/ (3n - 1), respectively. The third family of planar graphs are derived from n odd wheels by Hajos construction with star chromatic numbers 3 + 1/n. which is a generalization of one resnlt of Gao et al.

关键词： (k,d)-coloring Star chromatic number Planar graph

Domain structures and copper vacancies in natural low-djurleite (Cu_(1.93)S)

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Chinese Science Bulletin 2001年第6期46卷 502-504页

作者： SUN Tao & XUE JiyueDepartment of Earth Sciences. Nanjing university. Nanjing 210093. China Department of Earth Sciences Nanjing University Nanjing China

Based on HRTEM studies, the domain structure and the copper vacancy model of Dongxiang low-djurleite are discussed. The HRTEM images show: ( i ) The domain structures are the intergrowth between djurleit (dj) and digenite (dg) on nm scale. Although there is a transition area which appears as hexagonal-chalcocite-like structure between them, they still follow orientation relationship of (100)dj//(111)dg. (ii) 1.56%-3.12% vacancies of Cu are present in low-djurleite. There are 1-2 Cu vacancies aver-agely in every b0/2 of the unit cell. This ratio is coincident to the composition of djurleite (Cu1.93-1.97S)

关键词： djurleite HRTEM images domain structure copper vacancies Dongxiang in Jiangxi Province.

A New Competitive Inhibitory Monoclonal Antibody to Carboxypcptidase A(CPA)

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Chinese Chemical Letters 1999年第2期10卷 121-122页

作者： Mei DU Sheng JIN Zhen Quan GUO(College of Chemistry and Molecular Engineering. Peking university. 100871)(College of Life Science, Peking university. 100871) Peking Univ Coll Chem & Mol Engn Beijing 100871 Peoples R China Peking Univ Coll Life Sci Beijing 100871 Peoples R China

The monoclonal antibody ID11D7 to carboxypeptidase A (CPA) was prepared. Theinhibitory effect of McAb ID11D7 on the peptidase activity of CPA was measured. The result reflectsthat the McAb ID11D7 can competitively inhibit the peptidase activity of CPA with an apparentinhibitory constant of 6.3 × 10-9M. Based on this work. the McAb ID11D7 can be used as idiotypicantigen to prepare anti-idiotypic catalytic antibody with the peptidase activity similar to CPA.

关键词： Monoclonal antibody carboxypeptidase A (CPA) competitive inhibition peptidaseactivity

Triethylamine or diethylenetriamine as dynamic modifier for suppressing basic protein adsorption in capillary electrophoresis

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Chinese Chemical Letters 1999年第3期10卷 227-230页

作者： Ying Hua QIU Al Jin HUANG Yi Liang SUN(Department of Chemistry. Peking university. Beijing 100871) Department of Chemistry Peking University Beiijing 100871 China

Either triethylamine or diethylenetriamine can be conveniently used as a dynamic modifier to suppress the adsorption of basic proteins in capillary zone electrophoresis. Sufficiently high column efficiencies (> 2x10(5) plates/m for cytochrome C) were obtained with either of them along with the improvement of the peak shapes and repeatability of migration time. The relationship between the adsorption suppression effect of the modifier and its structure was discussed.

关键词： capillary zone electrophoresis basic proteins dynamic modifier triethylamne diethylenetriamine

Catalytic hydrolysis of CFC-12 over solid acid Ti(SO_4)_2

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Chinese Chemical Letters 2000年第4期11卷 311-314页

作者： Zhen MA Wei Ming HUA Yi TANG Zi GAO (Department of Chemistry. Fudan university. Shanghai 200433) Department of Chemistry Fudan University Shanghai 200433 China

The catalytic hydrolysis of dichlorodifluoromethane (CFC-12) was investigated over solid acid Ti(SO_4)_2. The catalytic activity decreased with the calcination temperature. When space velocity was 6 1 h^(-1) g-cat^(-1). the CPC-12 conversion at 310C over Ti(SO_4)_2 calcined at 350C remained about 98.5% during 360 h on stream. and the selectivity to by-products remained zero. The findings enlarged the scope of traditional catalyst systems for the CFCs decomposition.

关键词： Chlorofluorocarbons. catalytic decomposition. solid acid Ti(SO_4)_2.

Proper holomorphic self-maps of smooth bounded Reinhardt domains in C^n

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Science China Mathematics 2005年第Z1期48卷 318-323页

作者： Pan Yifei Department of Mathematical Sciences, indiana university.Purdue university.Fort Wayne Fort Wayne, IN 46805-1499 , U.S.A. School of Mathematics and Informatics, Jiangxi Normal university. Nanchang 330027, China Department of Mathematical Sciences Indiana University-Purdue University Fort Wayne Fort Wayne USA School of Mathematics and Informatics Jiangxi Normal University Nanchang China

It is proved that every proper holomorphic self-map of a smooth bounded Reinhardt domain of D'Angelo finite type in Cn (n ＞ 1) is an automorphism.

关键词： holomorphic, self-maps, Reinhardt domains.

Hua's Theorem on Prime Squares in Short Intervals

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Acta Mathematica Sinica,English Series 2000年第4期16卷 669-690页

作者： Jianya Liu Tao Zhan Department of Mathematics. Shandong university. Jinan 250100. P. R. China Department of Mathematics Shandong University Jinan 250100 P. R. China

It is proved that every large integer N≡5（mod24）can be written as N=p12+…+p52 with each prime pj satisfying |pJ-（N/5|）1/2≤N11/23.This gives a short interval version of Hua’s theorem on the quadratic Waring-Gol... 详细信息

关键词： Waring-Goldbach problem Hua’s theorem Prime Circle method