矢值序列空间ss(Ek)的正规结构和中点局部一致凸

矢值序列空间ss(Ek)是Banach序列空间lp(Ek)的重要推广.本文讨论了ss(Ek)的正规结构和中点局部一致凸.     

镱（Ⅲ）与2—（5—溴—2—吡啶偶氮）—5—二乙氨基酚显色反应的分光光度法研究

研究了在表面活性剂CTMAB存在下镱（Ⅲ）与5－Br－PADAP的显色反应．结果表明，在pH=9．66的NH4Cl－NH3·H2O缓冲溶液中，镱（Ⅲ）与5－Br－PADAP进行最佳络合．最大吸收波长λmax=580nm．表观摩尔系数为1．5×105L·mol-1·cm－1，镱（Ⅲ）星在0－12μg／25ml范围内符号比尔定律．     

手绘模拟电路图识别技术研究

主要研究手绘（印刷）模拟电路的识别技术．文章在优化图象质量和提高电路图素识别率等方面作了重点阐述．在元件识别的基础上，配合有限制的字符识别，形成了一种图象文字相结合的识别方法，提高了识别率，为电路图的自动分析打下良好的基础．     

浅议再就业培训

随着下岗人数的不断增加，再就业培训愈发显出其重要性。只有采取多种培训方式，转变下岗人员的观念，提高其自身的技能，再就业才能真正实现。     

浅议化学教改前景——计算机辅助教学的应用

通过阐述计算机辅助教学在化学教学中的应用 ,说明CAI在当前教育改革中的重要作用     

Principle, Method of Object-Relation Hypermedia Data Model and Its Application in the Multimedia Spatial Data Management

1.THEPriNCIPLEOFO-RHDM1.1AnalysisoftheExistingMultimediaDataModelThemultimediadatamodelisthekeytechniquefortherealizationofmultimediaspatialinformationmanagement.ThepresentexistingmultimediadatamodelmainlyincludesNFZmultimediadatamodel,object-originalmultimediadatamodelandhyper-mediadatamodelandsoon.Thoughthesethreekindsofmodelcanrealizetheorganizationandmanagementforthemultimediadatainacertaindegree,allofthemhavesomeweaknessduringthespecificuseinspatialmultimediadatamanagement.1.1.1…     

几种跳频码的混沌动力学特性及预测分析

利用动力系统方法研究了几种跳频码(m序列，RS序列，非线性序列及混沌序列)的动力学特性(相关维数与最大李雅普诺夫指数)，结果表明了跳频码表现出混沌的特征。最后根据遗传算法确定前馈神经网络的结构，并利用该神经网络模型对这几种序列做了预测分析。实验结果表明，该模型能成功地预测跳频码，因而可对跳频通信进行有效的干扰。     

紊动射流对叶栅内气相流场的影响

从空气动力学的角度提出了“气垫防磨”理论，并以气垫叶栅作为研究对象，在不同的主流与射流速度比、不同的缝隙数和缝隙宽度等条件下，利用IFA300型热膜风速仪系统对叶片表面附近的流场进行了测量，得出了各工况下的气垫厚度，结果表明，增加射流速度、缝隙宽度和缝隙数量，气垫厚度也相应增加，并且气垫的厚度主要由叶片前半部分的射流决定，在理论上论证了垫防磨的可行性。     

A family of mammalian Na+-dependent L-ascorbic acid transporters.

Vitamin C (L-ascorbic acid) is essential for many enzymatic reactions, in which it serves to maintain prosthetic metal ions in their reduced forms (for example, Fe2+, Cu+), and for scavenging free radicals in order to protect tissues from oxidative damage. The facilitative sugar transporters of the GLUT type can transport the oxidized form of the vitamin, dehydroascorbic acid, but these transporters are unlikely to allow significant physiological amounts of vitamin C to be taken up in the presence of normal glucose concentrations, because the vitamin is present in plasma essentially only in its reduced form. Here we describe the isolation of two L-ascorbic acid transporters, SVCT1 and SVCT2, from rat complementary DNA libraries, as the first step in investigating the importance of L-ascorbic acid transport in regulating the supply and metabolism of vitamin C. We find that SVCT1 and SVCT2 each mediate concentrative, high-affinity L-ascorbic acid transport that is stereospecific and is driven by the Na+ electrochemical gradient. Despite their close sequence homology and similar functions, the two isoforms of the transporter are discretely distributed: SVCT1 is mainly confined to epithelial systems (intestine, kidney, liver), whereas SVCT2 serves a host of metabolically active cells and specialized tissues in the brain, eye and other organs.     

再谈罗伯特·勃朗宁《幽会》诗

诗人全篇使用单一成份句 ,即以大量的具体景物描绘出恋人幽会的急切、激动、欢快之情 ;更为奇妙的是 ,诗人通过对诗歌尾韵的巧意安排来象征恋人永久的心心相印。