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On Factorization of Meromorphic Functions

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Acta Mathematica Sinica,English Series 1997年第4期13卷 509-512页

作者： Qiao Jin Gu Yongxing department of Applied Mathematics, Chongqing University, Chongqing 630044, china 重庆大学应用数学系重庆

This paper improves on the results of Noda, Y., Li Baoqing and Song Guodong, and proves the following theorem: Let f(z) be a transcendental meromorphic function. Then the set {a ∈C; (z-a)f(z) is not prime} is at mos... 详细信息

关键词： Meromorphic function Primality

Interfacial Tunnel-type GMR in Granular PerovskiteLa_(1-x)Sr_xMnO_3

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Journal of Materials Science & Technology 1999年第4期15卷 373-374页

作者： Ning ZHANG and Minyu ZENG(department of Physics, Nanjing Normal University, Nanjing 210097, china)WeiPing DING, Wei ZHONG and Youwei DU(National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, china)To whom correspondence sh department of Physics Nanjing Normal University Nanjing 210097 China National Laboratory of Solid State Microstructures Nanjing University Nanjing 210093 China

The spin-dependent intedecial tunneling and the corresponding tunnef-type magnetoresistance (TMR) have been observed in granular perovskite La_(1-x)Sr_xMnO_3 with x from 0.05 to *** shows that the intedecial tunneling originates from the magnetic difference between thegrain core and the sudece, and the TMR stems from the field-induced change of magnetic orderin the interface.

关键词： Sr x)SrxMnO3 MnO GMR Interfacial Tunnel-type GMR in Granular PerovskiteLa type

Crystal structure of a novel two-dimensional supramolecular network based on polyoxoanion and yttrium~Ⅲcoordination cation

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Science china Chemistry 2005年第Z1期48卷 9-13页

作者： HE Shuiyang,PENG Ke,NING Wei,WANG Daqi & SHI Qizhen department of Chemistry,Northwest University and Shaanxi Key Laboratory of Physico-Inorganic Chemistry,Xi’an 710069,china College of Chemistry and Chemical Engineering,Liaocheng University,Liaocheng 252059,china department of Chemistry Northwest University and Shaanxi Key Laboratory of Physico-Inorganic Chemistry Xi’an China College of Chemistry and Chemical Engineering Liaocheng University Liaocheng China

A novel compound (NH4)2Y(H2O)8[PMo10V2O40]·10H2O has been prepared in an aqueous solution and characterized by elemental analysis, IR, and TG-DTG analysis. X-ray diffraction analysis was carried out on (NH4)2Y(H2O)8 [PMo10V2O40]·10H2O single crystal, which crystallizes in the monoclinic system of a space group P21/C with a=0.9871(3) nm,b=1.5424(5) nm,c=2.7924(9) nm,β=94.183(5)°and Z=2. In the compound, a two-dimensional network is constructed by the PMo10V2O405- anion and the Y(H2O)83+ cation building blocks via hydrogen bonding exhibiting the porous structure.

关键词： crystal structure, polyoxoanion, yttrium, supramolecular network.

Potential control of horseradish peroxidase immobilization on gold electrode

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中国科学：化学英文版 2004年第2期47卷 134-141页

作者： GE Cunwang1,2, YU Wei1, LI Changan1, WANG Nanping2 & GU Ning1 1. Key Laboratory of Molecular and Biomolecular Electronics (Southeast University), Ministry of Education, Research Center for Nano-scale Science and Technology, Southeast University, Nanjing 210096, china 2. department of Chemistry, Nantong Teachers College, Nantong 226007, china Key Laboratory of Molecular and Biomolecular Electronics (Southeast University) Ministry of Education Research Center for Nano-scale Science and Technology Southeast University Nanjing China department of Chemistry Nantong Teachers College Nantong China

A new approach based on potential control was firstly used for the immobilization of horseradish peroxidase (HRP) as the model protein. The self-assembly monolayer (SAM) was prepared with 2-aminoethanethiol (AET) on the gold electrode. The charge on HRP was adjusted by means of the acidity of the phosphate buffer solution (PBS) for dissolving the HRP. The in-fluence of electric potential on HRP immobilization was investigated by means of colorimetric immunoassay of enzyme-substrate interaction (CIESI) using an automatic plate reader. The HRP modified electrodes were characterized with X-ray photoelectron spectroscopy (XPS) as well as atomic force microscope (AFM) on template-stripped gold surface. The potential for maximum immobilization of HRP was near the zero charge potential. The result indicates that controlled potential can affect the course of HRP immobilization without the loss of enzymic activity. It is of great significance for the control of biomolecular self-assembly and the intrinsic electric device.

关键词： electric potential control, horseradish peroxidase, immobilization, gold electrode, self-assembly.

On Sequential Composition of Precise Zero-Knowledge

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Journal of Shanghai Jiaotong university(Science) 2010年第1期15卷 43-48页

作者：丁宁谷大武 department of Computer Science and Engineering Shanghai Jiaotong University

Precise zero-knowledge was introduced by Micali and Pass in STOC'*** notion captures the idea that the view of any verifier in interaction can be reconstructed in almost *** also obtained a sequential composition lemma for precise zero-knowledge ***,this lemma doesn't provide tight precisions for composed *** this paper we further obtain a sequential composition lemma for a subclass of precise zero-knowledge protocols,which all satisfy a property:their simulators use the code of verifier in almost the black-box *** call such subclass emulated black-box zero-knowledge *** lemma provides better precisions for sequential composition of such protocols.

关键词： cryptography zero-knowledge precise zero-knowledge

Effects of aspirin on number,activity and inducible nitric oxide synthase of endothelial progenitor cells from peripheral blood

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Acta Pharmacologica Sinica 2006年第4期27卷 430-436页

作者： Tu-gang CHEN Jun-zhu CHEN~2 Xu-dong XIE department of Cardiovascular Disease,First Affiliated Hospital,Medical School of Zhejiang University.Hangzhou 310003,china department of Cardiovascular Disease First Affiliated Hospital Medical School of Zhejiang University Hangzhou China

Aim:To investigate whether aspirin has an influence on endothelial progenitorcells(EPC).Methods:Total mononuclear cells(MNC)were isolated from periph-eral blood by Ficoll density gradient centrifugation,then cells were plated onfibronectin-coated culture *** 7 d of culture,attached cells were stimu-lated with aspirin(to achieve final concentrations of 1,2,5,and 10 retool/L)for 3,6,12,and 24 *** were characterized as adherent cells that were double positivefor 1,1-dioctadecyl-3,3,3,3-tetramethylindocarbocyanine low density lipoprotein(DiLDL)uptake and lectin binding by direct fluorescent *** prolifera-tion and migration were assayed using a 3-(4,5-dimethyl-2 thiazoyl)-2,5-diphenyl-2H-tetrazolium bromide(MTT)assay and a modified Boyden chamber assay,*** EPC adhesion assay was performed by replating the EPC onfibronectin-coated dishes,and then adherent cells were *** vitrovasculogenesis activity was assayed by using an in vitro vasculogenesis *** nitric oxide synthase(iNOS)was assayed by Western ***:Incubation of isolated human MNC with aspirin decreased the number of *** also decreased the proliferative,migratory,adhesive,and in vitrovasculogenesis capacity of EPC,and also their iNOS levels in a concentration-and time-dependent ***:Aspirin decreases(1)the number ofEPC;(2)the proliferative,migratory,adhesive and in vitro vasculogenesis capaci-ties of EPC;and(3)iNOS levels in EPC.

关键词： aspirin endothelial progenitor cells cell adhesion cell count cell movement cell division physiologic neovascularization

Selection of Weather Parameters for Air-Conditioning System Design for Buildings with Long Thermal Lag

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湖南大学学报（自然科学版） 2009年第S1期36卷 79-82页

作者： GE Lian-feng1,2,LEI Ming3,CHEN You-ming1,2(1.College of Civil Engineering,Hunan University,Changsha,Hunan 410082,china 2.Key Laboratory of Building Safety and Energy Efficiency,MOE,china (3.Aviation Theory department,Aviation University of Air Force,Changchun,Jilin 130022,china) College of Civil Engineering Hunan University Changsha 410082 China Key Laboratory of Building Safety and Energy Efficiency China Aviation Theory department Aviation University of Air Force Changchun 130022 China

Two building factors-a longer thermal lag of more than one hour for building envelops and a lag of indoor radiation to convert into cooling load-have impact on the instantaneous heat input and instantaneous cooling *** the two factors should be taken into account when selecting the weather parameters for air-conditioning system *** paper developed a new statistic method for the rational selection of coincident solar irradiance,dry-bulb and wet-bulb *** method was applied to historic weather records of 25 years in Hong Kong to generate coincident design weather *** the results show that traditional design solar irradiance,dry-bulb and wet-bulb temperatures may be significantly overestimated in many conditions,and the design weather data for the three different constructions is not kept constant.

关键词： building construction thermal lag system capacity design weather data air-conditioning

THE CALCULATION OF THE BILINEAR BOLTZMANN OPERATOR FOR MAXWELLIAN MOLECULES

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Acta Mathematica Scientia 1985年第2期5卷 141-165页

作者：袁妙恩 Mathematics department of Inner Mongolia University Inner Mongolia China

In this paper, the calculation of the bilinear Boltzmann operator based on the Waldmann’s method for Maxwellian molecules has been given. The advantage of our technique lies in the calculation need not operato on the integral of operator. The way of carrying out the calculation is illustrated by several examples containing all proofs of the formulas in the article by Chen Tianquan & others. Moreover, for the linear Boltzmann operator, the calculation is slightly simpler than that of Waldmann.

关键词： THE CALCULATION OF THE BILINEAR BOLTZMANN OPERATOR FOR MAXWELLIAN MOLECULES 一命

Ability of Agrogyron elongatum to accumulate the single metal of cadmium, copper, nickel and lead and root exudation of organic acids

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Journal of Environmental Sciences 2001年第3期13卷 368-375页

作者： YANG Hong 1, Jongathan W.C.Wong 2, YANG Zhi min\+1, ZHOU Li xiang 1(1. College of Science, Nanjing Agricultural University, Nanjing\ 210095, china. 2. department of Biology, Hong Kong Baptist University, china) 南京农业大学江苏南京 210095 香港浸会大学香港

Agrogyron elongatum were grown in nutrient solution containing moderate to high amounts of separate heavy metal of Cd, Cu, Ni and Ph in a greenhouse for a 9 - day. Cd, Cu, Ni and Ph generally led to decrease in the elongation of roots although the length of seedlings exposed to Cd and Ph at 0.05 and 0.5 mg/L showed to be slightly greater than that of controls. Of the four metals in the experiment, Ph was absorbed and accumulated to the highest level, with the concentrations of 92754 mg/kg dry weight (DW) in roots and 11683 mg/kg DW in shoots. Cd was moderately accumulated in Agrogyron elongatum, but the maximum bioaccumulation coefficients (BCs) for roots and shoots were observed. The patterns for Cu and Ni uptake and distribution in plants differed from those of Ph and Cd, as it was showed that the shoot accumulation of Cu and Ni was significantly higher than in roots. A. elongation had the highest Ni concentration in shoots (30261 mg/kg DW) at the external concentration of 250 mg/L. Cu ranked second, with a shoot concentration of 12230 mg/kg DW when 50 mg/L Cu in solution was applied. For the four trace elements tested, the highest concentrations in shoots decreased by the order of Ni > Cu > Ph > Cd (mg/kg DW), and those in roots were Ph > Cd > Ni > Cu (mg/kg DW). Malic, oxalic and citric acids exuded by roots exposed to 1 and 50 mg/L of the metals were detected. Release of organic acids from plants significantly differed among the metal treatments. Cu was most effectively in inducing root exudation of the three types of organic acids. Cd, and Ni were also the inducers of secretion of malic and oxalic acids. With reference of Pb, a small amounts of malic and oxalic acids were detected in the root exudates, but few quantities, of citric acid were. found. However, no correlation between alternations in root exudation of organic acids and metal accumulation could be established.

关键词： heavy metal organic acid Agrogyron elongation hyperaccumulation