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    题名 作者 年代 出处 被引量
1The Queue Length Distribution for M/G/1 Queue with Delay Single Server VacationTANG Ying\|hui,\ TANG Xiao\|woSichuan University, Chengdu 610064 University of Electronic Science & Technology of China, Chengdu 610054 2000Systems Science and Systems Engineering2000,10,2:16
2New-generation biomedical materials:Peptide dendrimers and their application in biomedicine显示文摘Peptide dendrimers are attractive synthetic polymers and have been widely used as a new generation of biomaterials in recent years.Peptide dendrimers,as well as general dendrimers,may be synthesized to reach nano sizes,and display well-defined architectures,highly-branched structures,high density of functional terminal groups,and controllable molecular weights.On the other hand,peptide dendrimers have properties similar to proteins and some special characteristics,such as good biocompatibility,water solubility and resistance to proteolytic digestion.Due to these advantages,peptide dendrimers have received considerable attention in biomedicine.This review focuses on the development of peptide dendrimers with emphasis on their applications both in diagnostics and in therapy.GU ZhongWei,LUO Kui,SHE WenChuan,WU Yao & HE Bin National Engineering Research Center for Biomaterials,Sichuan University,Chengdu 610064,China 2010Science China Chemistry2010,53,3:12
3A STUDY ON LANDSCAPE MOSAIC STRUCTUREIN URBANRURAL AREA IN NORTHWESTOF CHINA WITH RS AND GIS- A Case Study of Xigu District in Lanzhou City显示文摘ABSTRACT: At the study area of Xigu District in Lanzhou City, using RS & GIS as tools we apply Diversity, Dominance, Fragmentation , Isolation and so on to study the quantitative, fractal and spatial characters of landscapes’ structures in the four sub-regions divided by the morphological features. Using the Fractal Theory to establish the fractal structure models, we analyze the complexity and stability of various landscapes’ distribution with fractal dimension value. The spatial distribution characteristics of landscape mosaic structure are also expounded. At the end of the paper we discuss the relevant problems on the main factors which control and effect on the spatial pattern of landscapes as well as on landscape optimization and management.XU Jian-hua1, LU Yan1, AI Nan-shan2, YUE Wen-ze3(1. Department of Geography, East China Normal University, Shanghai 200062, P. R. China 2. Environmental Science and Engineering School, Sichuan University, Chengdu 610064, P. R. Chin 2001Chinese Geographical Science2001,11,4:12
4Identification of a Cytoplasmic Male Sterile Line NEA in Brassica napus L.and Its Genetic Studies显示文摘Male sterile NEA plants were identified in progenies of the radiated 92P×Aggregate-silique in Brassica napus L. In 1993. Their progeny plants from test crossing and open pollination were 100% male sterile. The double-low male sterile lines JL-4 and JL-18 were bred through successive backcrossing of the double -low variety No. 4 and No. 18 in Brassica napus L. To NEA. Restorer lines 6720 and 6722 with significant heterosis in F1 were developed. The results from investigating the restoring-maintaining relationship and inheritance of the restorer gene indicated that JL-4 and JL-18 were different from both PolCMS and Shan 2A type,and their restorer gene was controlled by a pair of dominant genic genes.JIANG Liang-cai, PU Xiao-bin, ZHANG Qi-xing, CHEN Fang and ZHANG Jin-fang( The Crop Institute of the Sichuan Academy of Agricultural Sciences , Chengdu 610066 , P.R. China SichuanUniversity, Chengdu 610064 , P.R. China) 2002Agricultural Sciences in China2002,1,4:10
5Dioxygen Affinities and Catalytic Epoxidation Performanceof Transition-Metal Hydroxamates显示文摘Hydroxamicacidsandtheirderivativesareeasilysynthesizedandhavebeenextensivelyusedasanalyticreagentsandmedicinesl'2.Besides,palladiumhydroxamateswereemployedtocatalyzeolefinspreparingunsaturatedestersbymeansofmolecularoxygen'.Hydroxamicacidcanformsquar...Hua YANG Sheng Ying QIN Xiao Xia LU(Department of Chemistry, Sichuan University, Chengdu 610064) 1999Chinese Chemical Letters1999,10,1:9
6CONTINUOUS L-DOMAINS显示文摘Two characterization theorems of continuous L-domain are given. Then a problem raisedby J. D. Lawson and M. Mislove is solved.LIANG JIHUA LIU YINGMING(Institute of Mathematics, Sichuan University, Chengdu 610064, China.)(Project supported by the National Natural Science Foundation of China.) 1996Chinese Annals of Mathematics,Series B1996,17,3:8
7on Composition Operators on H^p-Spaces in Several Variables in Several VariablesCao Guangfu Sun Shunhua (Department of Mathematics,Sichuan University,Chengdu 610064,China) 1997Acta Mathematica Sinica,English Series1997,13,2:7
8TOEPLITZ OPERATORS AND ALGEBRAS ON DIRICHLET SPACES显示文摘The automorphism group of the Toeplitz C^*- algebra, J(C^1), generated by Toeplitz op-erators with C^1-symbols on Dirichlet space D is discussed; the K0, K1-groups and the first cohomology group of J(C^1) are computed. In addition, the author proves that the spectra of Toeplitz operators with C^1-symbols are always connected, and discusses the algebraic prop-erties of Toeplitz operators.In particular, it is proved that there is no nontrivial selfadjoint Toeplitz operator on D and Tψ^* = Tψ^- if and only if Tψ is a scalar operator.CAO GUANGFU Department of Mathematics, Sichuan University, Chengdu 610064, China. 2002Chinese Annals of Mathematics,Series B2002,23,3:7
9Optical 3D shape measurement for dynamic process显示文摘3D shape dynamic measurement is essential to the study of machine vision, hydromechanics, high-speed rotation, deforma- tion of material, stress analysis, deformation in impact, explosion process and biomedicine. in recent years. In this paper, the results of our research, including the theoretical analysis, some feasible methods and relevant verifying experiment results, are compendiously reported. At present, these results have been used in our assembling instruments for 3D shape measurement of dynamic process.SU Xian-yu, ZHANG Qi-can, and XIANG Li-qun Opto-Electronics Department, Sichuan University, Chengdu 610064, China 2008Optoelectronics Letters2008,4,1:7
10A new perylene diimide-based colorimetric and fluorescent sensor for selective detection of Cu^(2+) cation显示文摘A new perylene diimide (PDI) ligand (1) functionalized with a dipicolylethylenediamine (DPEN) moiety was synthesized and first used as a colorimetric and fluorometric dual-channel sensor to specifically detect the presence of Cu2+ over a wide range of other cations. The solution of 1 (10 μmol/L) upon ad-dition of Cu2+ displayed distinguishing pink color compared with other cations including K+,Ni2+,Ca2+,Mn2+,Na+,Sr2+,Zn2+,Co2+,Cd2+,Mg2+,Cr3+,Ag+,and Ba2+,indicating the sensitivity and selectivity of 1 to Cu2+. Thus,the advantage of this assay is that naked-eye detection of Cu2+ becomes possible. More-over,among these metal ions investigated,only Cu2+ quenched more than half fluorescent intensity of 1. The ESI-TOF spectrum of a mixture of 1 and CuCl2 in combination of the fluorescence titration spectra of 1 (10 μmol/L) upon addition of various amounts of Cu2+ revealed the formation of a 2︰1 metal-ligand complex through the metal coordination interaction.YAN LiWei,YANG Li,LAN JingBo & YOU JingSong Key Laboratory of Green Chemistry and Technology of Ministry of Education,College of Chemistry,and State Key Laboratory of Biotherapy,West China Hospital,West China Medical School,Sichuan University,Chengdu 610064,China 2009Science China Chemistry2009,52,4:6
11SEMI-DISCRETE AND FULLY DISCRETE PARTIALPROJECTION FINITE ELEMENT METHODS FOR THEVIBRATING TIMOSHENKO BEAM显示文摘1.IntroductionTheTimoshenkobeammodelisgivenbywherethebeamisconsidereddamped,drepresentsthebeamthicknessandI~[0,1].000istherotationofverticalfibersinthebeamandw(x)istheverticaldisplacementofthebeam’scenterline(underaverticalloadgivenbyg(x)).Analogoust...Min-fu Feng Xiao-ping Xie Hua-xing Xiong(Department of Mathematics, Sichuan University, Chengdu 610064, China.) 1999Journal of Computational Mathematics1999,17,4:6
12Two Village Ecosystems in the Upper Minjiang River, China: A Comparison of Emergy Flow显示文摘By using the concept of emergy and method of emergy analysis, this paper has studied two mountain settlement (village) ecosystems in two aspects: input and output of energy in the agro-systems and the use of fuel energy. The result reveals that the settlement agro-system in the valley of Minjiang River is better in both structure and function than that at the so-called half-high mountain. The former one is higher than the latter one regarding such indices as emergy yield ratio, labor productivity of emergy and emergy sustainable index, but lower than the latter one regarding environmental loading ratio. In terms of fuel emergy, the settlement in the valley enjoys more diversified sources and is less depending on bio-energy while the settlement at the half-high mountain has only one source (i. e. fuel wood), much depending on bio-energy, may exert a greater pressure on environment.Chen Yong, Chen Guojie, Wang QingInstitute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China Institute of Environmental Science and Engineering, Sichuan University, Chengdu 610064, Sichuan, China 2003Wuhan University Journal of Natural Sciences2003,8,03B:6
13Study on the α-cyclodextrin/poly(ethylene glycol) self-assembly supramolecular nanoparticles for drug delivery显示文摘This paper reports the synthesis and drug delivery properties of a novel supramolecular nanoparticle.α-Cyclodextrins(α-CD) were threaded on cinnamic acid modified poly(ethylene glycol) to form inclusion complex nanoparticles by supramolecular self-assemble.The anti-tumor drug doxorubicin was loaded in the nanoparticles and released in vitro to study the drug release behavior and the anti-tumor effects.The structure and morphology of the nanoparticles were characterized by nuclear magnetic resonance,X-ray diffraction,ultraviolet absorbance,dynamic laser scattering,scanning electronic microscopy,transmission electron microscopy and atom force microscopy.The distribution of the drug loaded nanoparticles in cells and the anti-tumor effects were studied by confocal laser microscopy.The results demonstrate that the supramolecular nanoparticle is biocompatible and it is a promising carrier for drug delivery systems.LI Yuan,JI Li,WANG Gang,SONG LiQing,HE Bin,LI Li,NIE Yu,WU Yao & GU ZhongWei National Engineering Research Center for Biomaterials,Sichuan University,Chengdu 610064,China 2010Science China Chemistry2010,53,3:5
14Image space analysis for variational inequalities with cone constraints and applications to traffic equilibria显示文摘In this paper,the image space analysis (for short,ISA) is employed to investigate variational in- equalities (for short,VI) with cone constraints.Linear separation for VI with cone constraints is characterized by using the normal cone to a regularization of the image,and saddle points of the generalized Lagrangian func- tion.Lagrangian-type necessary and sufficient optimality conditions for VI with cone constraints are presented by using a separation theorem.Gap functions and weak sharpness for VI with cone constraints are also investi- gated.Finally,the obtained results are applied to standard and time-dependent traffic equilibria introduced by Daniele,Maugeri and Oettli.LI Jun 1,& HUANG NanJing 2 1 College of Mathematics and Information,China West Normal University,Nanchong 637009,China 2 Department of Mathematics,Sichuan University,Chengdu 610064,China 2012Science China Mathematics2012,55,4:4
15Composition Operators on a Banach Space of Analytic FunctionsCao Guangfu (Department of Mathematics,Sichuan University,Chengdu 610064,China)N.Elias (6611 Tauglewood Court 3B,Hammond,IN46323)P.Ghatage (Department of Mathematics,Cleveland State University,Cleveland,OH44115)Yu Dahai (Department of Mathematics,Sichuan University,Chengdu 610064,China) 1998Acta Mathematica Sinica,English Series1998,14,2:4
16Admittance spectroscopy characterize graphite paste for back contact of CdTe thin film solar cells显示文摘CdTe thin film solar cells with a doped-graphite paste back contact layer were studied using admittance spectroscopy technology.The positions and the capture cross sections of energy level in the forbidden band were calculated,which are the important parameters to affect solar cell performance.The results showed that there were three defects in the CdTe thin films solar cells with the doped-graphite paste back contact layer,whose positions in the forbidden band were close to 0.34,0.46 and 0.51 eV,respectively above the valence band,and capture cross sections were 2.23×10-16,2.41×10-14,4.38×10-13 cm2,respectively.HE XuLin,ZHANG JingQuan,FENG LiangHuan,WU LiLi,LI Wei,ZENG GuangGen,LEI Zhi,LI Bing & ZHENG JiaGui College of Materials Science and Engineering,Sichuan University,Chengdu 610064,China 2010Science China(Technological Sciences)2010,53,9:4
17Characteristic analysis for a polynomial-like iterative equation显示文摘In the light of Euler’s idea for differential equations,a polynomial_like n _order iterative equation is discussed through analyzing its characteristic polynomial. An unproved result is verified rigorously for the first time. Then some conclusions on how the solutions are ruled by those characteristic roots follow.Janusz Matkowski 1 and ZHANG Weinian 2 1. Department of Mathematics, Technical University, 43_300 Bielsko_Biala, Poland 2. Department of Mathematics, Sichuan Union University, Chengdu 610064, China 1998Chinese Science Bulletin1998,43,3:4
18Dioxygen Affinities and Catalytic Oxidation Performance of Cobalt (Ⅱ)Complexes with N—Aryl Hydroxamic Acid显示文摘The oxygenation of cobalt (II) hydroxamates (CoL2) and its catalytic performance in oxidation of p-xylene to p-toluic acid (PTA) were examined. The effects of X and Y bonded to hydroxamate group on dioxygen affinities and catalytic oxidation performance were also investigated.Chun Chun ZHANG, Wei ZENG, Jian Zhang LI, Sheng Ying QIN* Department of Chemistry, Sichuan University, Chengdu 610064 2003Chinese Chemical Letters2003,14,6:4
19Polylogarithms and multiple zeta values from free Rota-Baxter algebras显示文摘We show that the shuffle algebras for polylogarithms and regularized MZVs in the sense of Ihara,Kaneko and Zagier are both free commutative nonunitary Rota-Baxter algebras with one generator.We apply these results to show that the full sets of shuffle relations of polylogarithms and regularized MZVs are derived by a single series.We also take this approach to study the extended double shuffle relations of MZVs by comparing these shuffle relations with the quasi-shuffle relations of the regularized MZVs in our previous approach of MZVs by renormalization.GUO Li1,2 & ZHANG Bin3,1Center of Mathematical Sciences,Zhejiang University,Hangzhou 310027,China 2Department of Mathematics and Computer Science,Rutgers University,Newark,NJ 07102,USA 3Yangtze Center of Mathematics,Sichuan University,Chengdu 610064,China 2010Science China Mathematics2010,53,9:4
20Toeplitz Operators on Dirichlet SpacesYu Feng LU Shun Hua SUN Department of Applied Mathematics, Dalian University of Technology, Dalian 116024, P. R. China Department of Mathematics, Sichuan University, Chengdu 610064, P. R. China Department of Mathematics, Sichuan University, Chengdu 610064, P. R. China 2001Acta Mathematica Sinica,English Series2001,17,4:4
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