高阶非线性Schrǒdinger方程的整体适定性

本文研究了一类非线性高阶Schrǒdinger方程Cauchy问题的整体适定性．利用不动点定理，获得了整体解的存在唯一性及解关于初值的连续依赖性和解具有较强的衰减估计．推广了文献中的结果．     

关于 Fuzzyω正则语言的一个注记

通过引入ω-Nerode等价关系,fuzzy前逆缀ω-语言,闭左逆语言等概念来研究语言的化数性质,得到了(1)fuzzyω正则语言可由一些具有有限指标集的等价类来表示;(2)fuzzy前逆缀ω-语言是fuzzyω正则语言iff由L定义的ω-Nerode等价关系的指标集是有限的.     

Hydrothermal Synthesis and Structure Analysis of a Chromium Complex [Cr(aea)]2(OH)2(aea=N-(2-Aminoethyl)aspartate)

A dimeric chromium compound has been synthesized by hydrothermal method and characterized by IR,EPR spectra and TG-DTA technique.The title compound [Cr(aea)]2(OH)2(aea=N-(2-aminoethyl)aspartate)crystallizes in monoclinic,space group P21/c with a=8.9393(10),b=6.7198(7),c=14.6791(16)(A),β=91.0580(10)°,V=881.63(17)(A)3,Z=2,Mr=486.34,Dc=1.832g/cm3,F(000)=500,μ=1.296 mm-1,R=0.0271 and wR=0.0756.Single-crystal X-ray structural analysis indicates that the title compound consists of two Cr(aca)units linked by two bridging hydroxyl groups.The geometry around each chromium center is approximately octahedral and completed by two hydroxyls and a quadridentate ligand which is formed when ethylenediamine reacts with maleie acid.     

集成热管散热器的试验研究与数值模拟

设计了一种用于CPU冷却的集成热管散热器,介绍了其结构特点。通过试验对集成热管散热器和AVC全铜散热器的传热性能进行了比较,并对集成热管散热器的温度场分布进行了测试。采用STAR-CD软件对散热器外部的传热与流动进行数值模拟分析,并试验验证了数值模拟结果的真实性,从而为进一步研究改进集成热管散热器提供了参考依据。!     

Studies on the Renaturation with Simultaneous Purification of Recombinant Human Proinsulin with Unit of Simultaneous Renaturation and Purification of Protein in Semi－preparative Scale

The recombinant human proinsulin (rh-proinsulin) is the precursor of insulin, which is connected with C- peptide between the carboxyl-terminal of chain A and NH2-terminal of chain B of insulin. In the presences of trypsin and carboxypeptides B (CPB), the C-peptide can be cleaved from the special two peptides of rh-proinsulin and the recombinant human insulin (rh-insulin) can be, thus, obtained1,2. The rh-proinsulin expressed in E. coli exists as inclusion body, hardly dissolves in water,…     

含浸P204胶囊的芯材缓释与功能性研究

对于含浸10个碳以上双链型表面活性剂的微胶囊体系,已得到了受温度、电场、pH值、化学反应及光控制的功能性胶囊~[1～3].功能性胶囊对芯材的缓释及控制释放作用,在医药、生化等方面的应用具有广阔的前景.但是一般认为对于含浸的双键型表面活性剂的较短链链长不能小于10个碳,对含浸链长小于10个碳的表面活性剂的功能性微胶囊体系未见报道.     

环形管环状流临界热负荷解析模型

根据环形管内流动与传热的特点,重新定义了环形管的水力直径和热周直径,基于圆管环状流CHF解析模型,得到了环形管内环状流临界热负荷解析模型。该模型可以预测环形管内沸腾两相流环状流时在不同加热方式下发生的临界热负荷,加热方式包括有内侧加热、外侧加热、两侧同时加热等。数值预测结果与文献数据比较表明本文的解析模型在P=0.57-15.01.MPa,G=198-3789.5 kgm-2s-1,xc=0.068-0.855,L/Dhe=19.3-539.5范围内预测良好。     

An Improved Synthetic Method of Saquinavir

IntroductionThe human immunodeficiency virus(HIV)is thecausative agent of acquired immunodeficiency syndrome(AIDS).Since HIV protease is essential for the repli-cation and maturation of HIV,the inactivation of HIVprotease by either mutation or chemical in…     

Ni/a-Si多层膜中固相非晶化反应过程

采用原位X射线衍射法定量地分析研究了多晶Ni/非晶Si成分调制膜中的固相反应非晶化过程.提出了非晶Ni-Si相在Ni/a-Si多层膜固相非晶化反应中的生长模型.并对Ni晶界上的非晶化现象给予热力学和动力学上的解释. 关键词：