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Possible Role of the Submandibular Gland in the Development of Obesity in Mice

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Biomedical and Environmental Sciences 1996年第2期9卷 191-198页

作者： JUNKO YAMASHITA SHIN-ICH HAYASHI YUKIO HIRATA AND MASAYASU MIYAJIMA(department of Biochemistry 2, The Jikei university School of Medicine,Tokyo 105 Japan department of Anatomy, School of Medicine,university of the Ryukyus. Okinawa 903-01, Japan Laborat department of Biochemistry 2 Jikei University School of Medicine Tokyo Japan.

The possible role of submandiblular glands (SMG) in the development of obesity was studied in two types of genetically obese mice, ob/ob and yellow Ay: Obesity is caused by hyperplasia followed by hypertrophy in ob/ob mice and mainly by hypertrophy in Ay *** histological features of SMGs exhibited clear sexual dimorphism in both mice similarto lean controls. The SMGs of ob/ob mice was smaller in size and had smaller granular convoluted tubular portions than lean controls, while the SMGs of Ay mice did not differ from lean controls. Sialoadenectomy before and after development of obesity gCnerally reduced the gain of body weights in both sexes of Ay mice but not in ob/ob mice. The content of epidermal growth factor (EGF) in the SMGs was higher in Ay mice and lower in ob/ob mice than their controls. The possible role of EGF in the SMGs in the development of obesity is discussed

关键词： gene EGF Res Possible Role of the Submandibular Gland in the Development of Obesity in Mice

Well-posedness and Global Attractors for the Burgers-Ginzburg-Landau Equations

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Acta Mathematicae Applicatae Sinica 2002年第4期18卷 579-588页

作者： Bo-ling Guo, Hai-yang HuangCenter of Nonlinear Studies, Institute of Applied Physics and Computational mathematics. P.O. Box 8009. Beijing 100088, Chinadepartment of mathematics. Beijing Normal university, Beijing 100875, China Center of Nonlinear Studies Institute of Applied Physics and Computational Mathematics Beijing 100088 department of mathematics Beijing Normal University 北京 100875

In this paper we consider the Burger-Ginzburg-Landau equations, and prove the existence of the global attractor in with finite Hausdorff and fractal dimensions.

关键词： Burger-Ginzbur-Landau equations Mild solution Hausdorff and fractal dimensions. Global attractor

ELECTROCATALYSIS OF NICKEL HEXACYANOFERRATE MODIFIED MICROBAND GOLD ELECTRODE FOR OXIDATION OF REDUCED NICOTINAMIDE ADENINE DINUCLEOTIDE

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Chinese Chemical Letters 1995年第6期6卷 501-504页

作者： Chen Xin CAI Huang-Xian JU Hong Yuan CHEN(department of Chemistry,Nanjing university,Naming 210093) Nanjing Univ Dept Chem Nanjing 210093 Peoples R China

A nickel hexacyanoferrate modified microband gold electrode, which can-be prepared by cyclic voltammetry, exhibits excellent electrocatalytic activity for NADH oxidation with;an overpotential ca.340mV lower than that at the bare electrode. Quantitative analysis of the electrocatalytic reaction based on rotating disk voltammetry gives a rate constant k of the order of 10(3) ***(-1).s(-1).

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Experimental Study on Uniaxial and Multiaxial Strain CyclicCharacteristics and Ratcheting of 316L Stainless Steel

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Journal of Materials Science & Technology 2001年第2期17卷 219-223页

作者： GuoZheng KANG, Qing gaO, Lixun CAI, Xianjie YANG and Yafang SUN department of Applied Mechanics and Engineering, Southwest Jiaotong university, Chengdu 610031, China SW Jiaotong Univ Dept Appl Mech & Engn Chengdu 610031 Peoples R China

An experimental study was carried out on the strain cyclic characteristics and ratcheting of 316L stainless steel subjected to uniaxial and multiaxial cyclic loading. The strain cyclic characteristics were researched under the strain-controlled uniaxial tension-compression and multiaxial circular paths of loading. The ratcheting tests were conducted for the stress-controlled uniaxial tension-compression and multiaxial circular, rhombic and linear paths of loading with different mean stresses, stress amplitudes and histories. The experiment results show that 316L stainless steel features the cyclic hardening, and its strain cyclic characteristics depend on the strain amplitude and its history apparently. The ratcheting of 316L stainless steel depends greatly on the Values of mean stress, stress amplitude and their histories. In the meantime, the shape of load path and its history also apparently influence the ratcheting.

关键词： Experimental Study on Uniaxial and Multiaxial Strain CyclicCharacteristics and Ratcheting of 316L Stainless Steel

具有特殊协方差结构的SURE模型中参数估计的若干结果

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系统科学与数学 1999年第1期19卷 86-94页

作者：魏凤荣中央民族大学应用数学与软件系北京100081

本文讨论具有特殊协方差结构似乎不相关回归方程（SURE）模型中参数的估计问题．除非另有说明，损失函数将取为二次损失和矩阵损失．本文证明了回归系数的线性可估函数的最小二乘估计是极小极大的且在矩阵损失函数下是可容许的；还分别... 详细信息

本文讨论具有特殊协方差结构似乎不相关回归方程（SURE）模型中参数的估计问题．除非另有说明，损失函数将取为二次损失和矩阵损失．本文证明了回归系数的线性可估函数的最小二乘估计是极小极大的且在矩阵损失函数下是可容许的；还分别在仿射交换群和平移群下导出了存在回归系数的线性可估函数的一致最小风险同变（UMRE）估计的充要条件，并证明了在仿射交换和二次损失下不存在协方差阵和方差的UMRE估计．

关键词：可容许性参数估计 SURE模型协方差回归系数

Investigation of Polyacrylate Anion-Exchangers for Separation of Rare Earth Element Complexes with EDTA

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Journal of Rare Earths 2002年第1期20卷 31-35页

作者： Halina Hubicka(department of Inorganic Chemistry, Faculty of Chemistry, Maria Curie Sklodowska university, 20 031 Lublin, Poland) Marie Curie Sklodowska Univ Fac Chem Dept Inorgan Chem PL-20031 Lublin Poland

The rare earth complexes with EDTA, Ln(edta), show an unusual sequence of affinity for the anion exchangers. The sorption and chromatographic separation of Y 3+ for Nd 3+ complexes with EDTA was studied by using the strongly basic gel and macroporous polyacrylate anion exchangers, Amberlite IRA 458 and Amberlite 958, and the weakly basic gel polyacrylate anion exchanger, Amberlite IRA 68. The investigations on sorption and separation of rare earth complexes with EDTA on the polyacrylate anion exchangers applied mainly in the environment protection so far indicate that they can be applied in anionexchange separation of lanthanide complexes with aminopolycarboxylic acids. It was shown that the weakly basic polyacrylate gel anion exchanger Amberlite IRA 68 is the most effective in purification of Y 3+ from Nd 3+ in comparison with the strongly basic anion exchangers of this type.

关键词： rare earths yttrium neodymium anion exchanger EDTA

Synthesis, Structure and Antitumor Activity of S~*-2-〔2-(Ethyl 4-Methylvalerate〕-1,2-Benzisoselenazol-3(2H)-one

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Chinese Journal of Structural Chemistry 1997年第1期16卷 42-47页

作者： XIAO Ying-Xin LIU Xiu--Fang XU Han--Sheng’(department of Chemistry, Wuhan university, Wuhan, 430072)ZHU Jun HUANG You--Qing HU Sheng--Zhi (department of Chemistry, Xiamen university, Xiamen361005) department of Chemistry Wuhan University Wuhan 430072 China department of Chemistry Xiamen University Xiamen 361005 China

The title compound has been synthesized in good yield in H2O/ethersystem by using 2--chloroselenobenzoyl chloride as the key intermediate. its structurewas characterized by elemental analysisi IR, IH NMR and X--ray diffraction *** data: C15H19NO3Se, M.r= 340. 28, hexagonal, P61, a= 8. 903(2), c= 34. 352(1)A, V=2358. I A3, Z=6, Dx=1. 438 g/cm3, λ(CuKa)=l. 5418 A, μ=33. 56cm--1, F (000) = 1044, final R = 0. 034 for 1396 observed reflections. Molecules incrystal form helieal chains with intermolecular Se...O distance of 2. 812(5) A as wellas intramolecular Se ...O distance of 3. 089 (5) A. Biological studies show that thiscompound is very active against human tumor cells, including HCT--8, Bel--7402,A432, HL--60 and K562.

关键词： benzisoselenazolone ebselen selenoorganic compound synthesis crystal structure antitumor activity

Correlation between rheological behavior and structure of multi-component polymer systems

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Science China Chemistry 2008年第1期51卷 1-12页

作者： ZUO Min1,2 ZHENG Qiang1 1 Key Laboratory of Macromolecular Synthesis and Functionalization, Ministry of Education, department of Polymer Science and Engineering, Zhejiang university, Hangzhou 310027, China 2 department of Chemical Engineering, Hong Kong university of Science and Technology, Clear Bay, Kowloon, Hong Kong 1. Key Laboratory of Macromolecular Synthesis and Functionalization Ministry of Education Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China 2. department of Chemical Engineering Hong Kong University of Science and Technology Clear Bay Kowloon Hong Kong China

Rheological measurement has been an effective method to characterize the structure and properties for multiphase/multi-component polymers, owing to its sensitivity to the structure change of hetero- geneous systems. In this article, recent progress in the studies on the morphology/structure and rheological properties of heterogeneous systems is summarized, mainly reporting the findings of the authors and their collaborators, involving the correlation between the morphology and viscoelastic relaxation of LCST-type polymer blends, the microstructure and linear/nonlinear viscoelastic behavior of block copolymers, time scaling of shear-induced crystallization and rheological response of poly- olefins, and the relationship between the structure/properties and rheological behavior of filled polymer blends. It is suggested that a thorough understanding of the characteristic rheological response to the morphology/structure evolution of multiphase/multi-component polymers facilitates researchers’ op- timizing the morphology/structure and ultimate mechanical properties of polymer materials.

关键词： heterogeneous polymer systems morphology and structure rheological properties viscoelastic relaxation

IMPEDANCE CHARACTERISTICS OF POLYFURAN FILMS

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Chinese Journal of Polymer Science 2002年第5期20卷 419-423页

作者： Liang Li Xiao-bo Wan Gi Xue department of Polymer the State Key Laboratory of Coordination Chemistry Nanjing university Nanjing 210093. China Nanjing Univ Dept Polymer State Key Lab Coordinat Chem Nanjing 210093 Peoples R China

Electrochemical impedance spectroscopy (EIS) was first used for the characterization of polyfuran (PFu) films that had been formed electrochemically on an Au electrode. The polyfuran was measured in high oxidation state, intermediate oxidation state and reduction state, respectively. As the oxidation level is increased, the ionic conductivity of PFu/BF4- increases. And impedance studies on PFu show that the anion BF4- appears to be mobile with a high diffusion coefficient of approximately 10(-8) cm(2).s(-1).

关键词： polyfuran electrochemical impedance spectroscopy capacitance