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Involutions Fixing Products of Projective Spaces

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Communications in Mathematical Research 1999年第1期 97-102页

作者： Ding Yanhong (department of mathematics,{2., chengdu, 610064) Liu Zongze and Wang Yanying (department of mathematics, Hebei Teachers’ university, Shijiazhuang, 050016)

§１．ＩｎｔｒｏｄｕｃｔｉｏｎＬｅｔ（Ｍｎ，Ｔ）ｂｅａｓｍｏｏｔｈｉｎｖｏｌｕｔｉｏｎｏｎａｃｌｏｓｅｄｎ－ｄｉｍｅｎｓｉｏｎａｌｍａｎｉｆｏｌｄ．ＷｅｕｓｅＦｔｏｄｅｎｏｔｅｔｈｅｓｅｔｏｆｐｏｉｎｔｓｆｉｘｅｄｂ... 详细信息

§１．ＩｎｔｒｏｄｕｃｔｉｏｎＬｅｔ（Ｍｎ，Ｔ）ｂｅａｓｍｏｏｔｈｉｎｖｏｌｕｔｉｏｎｏｎａｃｌｏｓｅｄｎ－ｄｉｍｅｎｓｉｏｎａｌｍａｎｉｆｏｌｄ．ＷｅｕｓｅＦｔｏｄｅｎｏｔｅｔｈｅｓｅｔｏｆｐｏｉｎｔｓｆｉｘｅｄｂｙＴ．Ｔｈｅｆｏｌｏｗｉｎｇｑｕｅ...

关键词： Involution Bordism Characteristic Class Wu formula

Novel Bis-hydroxymethylation of Imidazole and 2.Methylimidazole

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Chinese Chemical Letters 1997年第1期8卷 21-24页

作者： Cheng He ZHOU Zhi Chang LIU Ru Gang XIE Hua Ming ZHAO(department of Chemistry, Faculty of Science, sichuan union university,{2.) sichuan union UNIV FAC SCIDEPT CHEMCHENGDU 610064PEOPLES R CHINA

A novel one-pot synthesis of 4,5-bis(hydroxymethyl) imidazoles 2.-b, new ethers 3a-b and a new type of imidazolophane 4b by the bis-hydroxymethylation of imidazole or 2.methyl imidazole with formaldehyde and potassium hydroxide is reported. The structures of these compounds have been established by MS, (1)HNMR IR and elemental analyses.

关键词： Novel Bis-hydroxymethylation of Imidazole and 2.Methylimidazole

A KIND OF FUZZY MULTI-OBJECTIVE LINEAR PROGRAMMING PSOBLEMS BASED ON INTER VALVALUED FUZZY SETS

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Journal of Systems Science & Complexity 2001年第2期14卷 149-158页

作者： XU Jiuping (department of Applied mathematics, {2. university, chengdu 610065, china) 四川大学四川成都 610065

This paper presents a general solution procedure and an interactive fuzzy satisfying method for a kind of fuzzy multi-objective linear programming-problems based on interval valued fuzzy sets. Firstly, a fuzzy set of the fuzzy solutions, which can be focused on providing complete information for the final decision, can be obtained by the proposed tolerance analysis of a non-dominated set. Secondly, the satisfying solution for the decisionmaker can be derived from Pareto optimal solutions by updating the current reference membership levels on the basis of the current levels of the membership functions together with the trade-off rates between the membership functions.

关键词： Fuzzy number interval-valued fuzzy sets multiple objective linear programming interactive fuzzy satisfying method parametrically interval values.

Dioxygen Affinities and Catalytic Epoxidation Performanceof Transition-Metal Hydroxamates

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Chinese Chemical Letters 1999年第1期10卷 79-82页

作者： Hua YANG Sheng Ying QIN Xiao Xia LU(department of Chemistry, sichuan {2., chengdu 610064) sichuan Univ Dept Chem Chengdu 610064 Peoples R China

The dioxygen affinities and catalytic epoxidation performance of transition-metal hydroxamates were investigated for the first time. The effects of substituents on these properties were also discussed in the paper.

关键词： transition-metal hydroxamates dioxygen affinities catalytic epoxidation

SYNTHESIS OF LIQUID CRYSTALS CONTAINING THE AZA-15-CROWN-5 UNIT

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Chinese Chemical Letters 1996年第3期7卷 213-216页

作者： Wei ZHAO Ming Gut XIE Qing JIANG(department of Chemistry, sichuan {2., chengdu, 610064.) sichuan UNIV DEPT CHEMCHENGDU 610064PEOPLES R CHINA

Two new aryl esters with the aza-15-crown-5 structural unit were synthesized. Their structures have been elucidated with IR, (1)HNMR, MS and elementary analysis. The determinations of DSC and textures have shown that ... 详细信息

关键词： POLYMERS ETHERS

Theoretical studies of rovibrational spectrum and potential energy function for Ar-N_2.complex

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Chinese Science Bulletin 1997年第1期42卷 43-46页

作者： YAN Guosen, XIE Junkai and XIE Daiqiandepartment of Chemistry, sichuan {2., chengdu 610064, china department of Chemistry Sichuan University Chengdu China

THE Ar-N2.complex plays an important role in atmosphere chemistry. Recently, the potential energy functions （PEF） CPV, BTT, MMSV, M3SV, MMSV’ have been determined by comparing the relevant experimental information,... 详细信息

THE Ar-N2./sub> complex plays an important role in atmosphere chemistry. Recently, the potential energy functions （PEF） CPV, BTT, MMSV, M3SV, MMSV’ have been determined by comparing the relevant experimental information, such as the molecular beam scattering measurements, virial coefficient data, bulk transport and relaxation phenomena, pressure-broadening and shift of spectroscopic infrared and Raman lines. The pure rotational spectrum of the Ar-14N2./sub>, Ar-15N2./sub>, and Ar-14N 15N isotopomers have been measured by Jager

关键词： potential energy function van der Waals vibrational states intensity and isotope effects.

Uniform estimate for maximum of randomly weighted sums with applications to insurance risk theory

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Science china mathematics 2005年第10期48卷 1379-1394页

作者： WANG Dingcheng~1 SU Chun~2.& ZENG Yong~1 1. School of Management and School of Applied mathematics,university of Electronic Science and Technology of{2.,chengdu 610054,china 2. department of Statistics and Finance,university of Science and Technology of{2.,Hefei 2.002.,china 1. School of Management and School of Applied mathematics University of Electronic Science and Technology of China 610054 Chengdu China 2. department of Statistics and Finance University of Science and Technology of China 230026 Hefei China

This paper obtains the uniform estimate for maximum of sums of independent and heavy-tailed random variables with nonnegative random weights, which can be arbitrarily dependent of each other. Then the applications to ... 详细信息

关键词： dependent stochastic return, discount factor, heavy-tails, discrete time insurance risk model, maxima of randomly weighted sums, ruin probability, tail probabilities, uniformly asymptotic estimate.

Role of uterine natural killer cells in angiogenesis of human decidua of the first-trimester pregnancy

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Science china(Life Sciences) 2008年第2期51卷 111-119页

作者： LI GuoHua1, HUANG Wei1, XIA QingJie2. YANG KaiXuan3, LIU RaoFang1, ZHU HuiLi1 & JIANG Wei4 1 department of Reproductive Endocrinology, West china Second {2. Hospital, sichuan {2., chengdu 610041, china 2.West china Research Laboratory of Molecular Genetics, sichuan {2., chengdu 610041, china 3 department of Pathology, West china Second {2. Hospital, sichuan {2., chengdu 610041, china 4 department of Pathology, West china Hospital, sichuan {2., chengdu 610041, china 1. department of Reproductive Endocrinology West China Second University Hospital Sichuan University Chengdu 610041 China 2. West china Research Laboratory of Molecular Genetics Sichuan University Chengdu 610041 China 3. department of Pathology West China Second University Hospital Sichuan University Chengdu 610041 China 4. department of Pathology West China Hospital Sichuan University Chengdu 610041 China

Decidualization is accompanied by extensive angiogenesis, which is an essential step in the maturation of new blood vessels in mammalian pregnancy. The purpose of this study was to determine a distribution of uNK cells (CD56+ uNK or CD56bright cells) in human decidua of the first-trimester pregnancy, and investigate whether uNK cells in human decidua could express vascular endothelial growth factor (VEGF-A) and/or angiopoietin2.(Ang2.. Our immunohistochemical staining results demonstrated that a great amount of uNK (CD56+) cells scattered throughout the decidual stroma and near endometrial gland and spiral vessels in human decidua. The protein expression of VEGF-A and Ang2.was detected in decidual stroma cells, capillary endothelial cells and glandular cells in tissue specimens. There was a positive correlation between microvessel density (MVD) and the number of the CD56-positive uNK cells in decidual stroma, and also between the number of the CD56-positive uNK cells and VEGF-A protein expression in the tissue. In addition, we found that uNK cells in human decidua could express VEGF-A mRNA, but not Ang2.mRNA, in isolated uNK cells in human decidua of the first-trimester gestation by combination of LCM and Nested-PCR. Our study indicated that uNK cells, through expressing VEGF-A, may play an important role in the angiogenic response at the time of human decidualization and early placenta development.

关键词： uterine natural killer cells decidua angiogenesis VEGF Ang2

Studies on the Relationship Between Electronic Structures and Superconducting Properties of TlBaCaCuO, BiSrCaCuO and XBaCuO(X=Y, Nd,Dy) Systems

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Chemical Research in Chinese Universities 1996年第1期12卷 60-69页

作者： LI Ping XIAO Shen-xiu CHEN Tian-lang and LI Li(department of Chemistry, sichuan {2., chengdu, 610064) sichuan UNIV DEPT CHEMCHENGDU 610064PEOPLES R CHINA

The electronic structures of TIBaCaCuO, BiSrCaCuO and XBaCuO (X = Y,Nd, DY) systems were calculated using DV-Xa method. According to the calculated results, the relationships between electronic structures and supercon... 详细信息

关键词： Superconductor DV-X_α method Populations State densities Energy gap