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Synthesis of Novel Cyclodextrin Dimers Linked by Multidentate Coordination Units

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Chinese Chemical Letters 1998年第2期9卷 135-138页

作者： Mei Ming LUO Ru Gang XIE Wei LU ping Fang XLA Hua Ming ZHAO (department of chemistry,{2., chengdu 610064department of chemistry, sichuan Educational College, chengdu 610041) department of chemistry Sichuan University Chengdu 610064 China department of chemistry Sichuan Educational College Chengdu 610041 China

A new type of cyclodextrin dimers (2.-c) bridged with multidentate coordination units has been synthesized by treatment of 6-deoxy-6-hydroxyethylamino-beta-cyclodextrin 1 with corresponding dibromides in the presence ... 详细信息

关键词： cyclodextrin dimers selective synthesis

A Method for Obtaining Three-dimensional Images with Visual Reality of Real Objects

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Chinese Journal of Lasers 1999年第5期8卷 425-430页

作者： HUANG Qiong SU Xianyu(department of Opto-electronics, sichuan university,{2., China) 四川大学光电子系四川成都 610064 四川大学光电子系四川成都

A new method to remove the shadows in laser triangulation and a computer model for three-dimensional images with visual reality of three-dimensional diffuse objects are presented. The methods for acquiring color data in optical three-dimensional sensing are discussed A method for obtaining three-dimensional images with visual reality of real objects is presented The principles, the system structure and the experimental results are provided.

关键词： three-dimensional sensing laser triangulation shadow three-dimensional images with visual reality

k-NN METHOD IN PARTIAL LINEAR MODEL UNDER RANDOM CENSORSHIP

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Applied Mathematics(A Journal of Chinese Universities) 1995年第3期10卷 275-286页

作者： QIN GENGSHENG (department of Mathematics,sichuan {2., chengdu 610064). department of Mathematics Sichuan University Chengdu

Consider the regression model Y=Xβ+ g(T) + e. Here g is an unknown smoothing function on [0, 1], β is a l-dimensional parameter to be estimated, and e is an unobserved error. When data are randomly censored, the estimators βn* and gn*forβ and g are obtained by using class K and the least square methods. It is shown that βn* is asymptotically normal and gn* achieves the convergent rate O(n-1/3).

关键词： Partial linear model censored data class K method k-nearest neighbor weights

Diffusion Equation on Fractals:Three-Dimensional Case

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Communications in Nonlinear Science and Numerical Simulation 1999年第3期4卷 3-5页

作者： Qiuhua ZENG and Houqiang LI(department of Physics, sichuan university,{2., China) department of Physics Sichuan University ChengDu 610064 China

IntroductionInrecentyearsthephenomenonofunusualtrajnsport-prop***onindisorderedmediaorfractalmedia,anomalousdiffusionistheoretic... 详细信息

IntroductionInrecentyearsthephenomenonofunusualtrajnsport-prop***onindisorderedmediaorfractalmedia,anomalousdiffusionistheoretic...

关键词： comb model probability density diffusion on fractals

Interaction of bis-aryl functionalized molecules with nucleosides and nucleic acids

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Science China chemistry 2010年第1期53卷 103-112页

作者： HUANG Yu1,LIU JunLiang1,ZHANG Ji1,LIU Qiang1,HOU JiTing1,ZHANG Yu1,ZHANG DaWei2.LU QiaoSen1,CHEN ShanYong1,LIN HongHui2.& YU XiaoQi1 1 Key Laboratory of Green chemistry and Technology,Ministry of Education College of chemistry,{2. university,chengdu 610064,China 2.Key Laboratory of Bio-resources and Eco-environment,Ministry of Education College of Life Sciences,{2. university,chengdu 610064,China. Key Laboratory of Green chemistry and Technology Ministry of Education College of chemistry Sichuan University Chengdu China Key Laboratory of Bio-resources and Eco-environment Ministry of Education College of Life Sciences Sichuan University Chengdu China

A series of novel molecules with a cyclen(1,4,7,10-tetraazacyclododecane) moiety appended on and bearing different aromatic fragments in the structures were synthesized and *** binding activities of these compounds towards DNA were systematically studied by spectroscopic,viscometric and gel electrophoresis *** results suggest that the stacking interaction plays an important role in improving the DNA binding ability of the *** binding modes of the compounds towards DNA are also affected by the sizes of the aromatic *** binding interaction between binaphthyl compound 1b and several nucleosides was studied by fluorescence *** interaction and hydrophobic interaction play the key role in such non-selective binding process.

关键词： stacking and hydrophobic interactions DNA binding aromatic compounds nucleosides oligonucleotides

On nulls of perturbed Fredholm operators and degenerate homoclinic bifurcations

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Science China Mathematics 2004年第4期47卷 617-627页

作者： ZHANG Weiniandepartment of Mathematics, sichuan university,{2., China department of Mathematics Sichuan University Chengdu China

It is known that small perturbations of a Fredholm operatorL have nulls of dimension not larger than dimN(L). In this paper for any given positive integer κ ? dimN(L) we prove that there is a perturbation ofL which has an exactly κ-dimensional null. Actually, our proof gives a construction of the perturbation. We further apply our result to concrete examples of differential equations with degenerate homoclinic orbits, showing how many independent homoclinic orbits can be bifurcated from a perturbation.

关键词： Fredholm operator, perturbation, dimension, decomposition, degenerate homoclinic bifurcation.

A New Type of Biomimetic Model: Design, Synthesis andCharacteriration of Imidazolium Bis-Estrogen

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Chinese Chemical Letters 1997年第5期8卷 387-388页

作者： Zhi Chang LIU Cheng He ZHOU Ru Gang XIE (department of chemistry, Faculty of Science, {2. Union university, chengdu 610064) department of chemistry Faculty of Science Sichuan Union University Chengdu 610064 China

Two imidazolium bis-estrogens as a new type of biomimetic model, which possesspotential multiple biomimetic functions, were srnthesized in gcod yields by three steps fromestrogen. All new compounds were characterized ... 详细信息

关键词： Design A New Type of Biomimetic Model Synthesis and Characterization of Imidazolium Bis-Estrogen

Anomalous Fractional Diffusion Equation forTransport Phenomena

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Communications in Nonlinear Science and Numerical Simulation 1999年第2期4卷 99-104页

作者： Qiuhua ZENG Houqiang LI De LIU(department of Physics, sichuan university,{2., China) department of Physics Sichuan University ChengDu 610064 China

We derive the standard diffusion equation from the continuity equationand by discussing the defectiveness of earlier proposed equations, we get the generalizedfractional diffusion equation for anomalous diffusion.

关键词： fractal lattice probability density fractal anomalous diffusion

Enantioselective Hydrolysis of α-Amino Acid Ester by Chiral Metallomicelles

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Chinese Chemical Letters 1998年第4期9卷 335-337页

作者： Jing Song YOU Xiao Qi YU Xiao Ling ZHANG and Ru Gang XIE(department of chemistry,{2., chengdu 610064) department of chemistry Sichuan University Chengdu 610064 China

A series of chiral lipophilic Cu(Ⅱ) complexes were investigated as catalysts for the enantioselective hydrolysis of R(S)-p-nitrophenyl N-dodecanoyl-phenylalaninate in micelles. The highest enantioselectivity (kR/ks=7... 详细信息

关键词： micelle chiral metallomicelle enantioselective hydrolysis