3-距离空间中一类压缩映象序列的公共不动点定理

引入3－距离空间的概念，给出3－距离空间中一类压缩映象序列的公共不动点定理。     

锌铝尖晶石的研制

在不同的ＺｎＯ／Ａｌ２Ｏ３配比条件下，于１６００℃左右合成了锌铝尖晶石及含锌铝尖晶石的陶瓷材料，在１２００￣１３００℃的温度下，测定了不同陶瘊材料与铜液之间接触角，结果表明ＺｎＯ的加入可以改善铜液对Ａｌ２Ｏ３的浸润性     

Decompoisition of toxic and environmentally hazardous 2,3,7,8-tetra-chlorodibenzo-p-dioxin by gamma irradiation

Summary The decomposition of the toxic and environmentally hazardous 2378-TCDD by gamma irradiation was studied and successfully used to decontaminatge laboratory wastes containing small quantities of this chemically and biological stable compound. The method makes use of gamma irradiation from a commercial⁶⁰cobalt facility at high dose levels (100 kGy) to break down the compound into notoxic products. Irradiation also decomposed 2378-TCDD in contaminated soil from the Seveso accident.     

泛力学基础(1)(续)

<正> 2 泛力学的意义 本章陈述泛力学概论,为后继诸章做准备。 2.1 泛力学纲量系 2.1.1 量与泛度量子 在我们的宇宙(指迄今为止,人类所认识了的自然界)中,对于每一类量,总要有它的度量单位,现在从人类生活的环境说起。各种量往往是连续的,例如,长度、它可以选用任一种非零正单位去度量,可取(?)_1为1km,1m,1cm,1mm等等,由于这种认识上的连续性,决定了(?)_1的任意性,从而(?)_1可选用任意小的正数量。为了更准确,理论上应当愈小越好但又不能为0,可见(?)_1应当是一个正无穷小量,简记为(?)_1≠0,(?)_1→0(由定义5知,(?)_1=0(?){(?)_1}=0),称(?)_1为长度(?)的连续度量子。一般地,对任意连续的量A,称A的     

Effect of phospholipids on purified lipoamidase

Summary Phospholipids were added to purified lipoamidase from porcine brain microsomal membranes, and changes in lipoamidase activity were examined. Approximately twofold activation of lipoamidase activity occurred upon the addition of phosphatidylethanolamine. On the other hand, phosphosphatidylserine, cardiolipin, and phosphatidic acid reduced the enzyme activity by approximately 80%. This pattern of the activation of lipoamidase by phosphatidylethanolamine and its inhibition by phosphatidylserine is similar to the pattern for adenylate cyclase, and contrasts with the pattern for ATPase.     

原子-键电负性均衡融合进分子力场对CoCl3水溶液的分子动力学模拟研究

298．15K时运用原子-键电负性均衡融合进分子力场（ABEEM／MM）对CoCl3水溶液进行了分子动力学模拟．结果表明，ABEEM／MM力场模型可以获得体系的动态电荷，充分考虑了体系中存在的极化现象，从而及时地调节改变的静电场，真实地模拟了溶液的微观结构；并且CoCl3溶液中钴离子更倾向于和氯离子配位，而使钴离子与水分子的配位能力降低．     

Fe~(3+)对钢铁酸洗的影响及CQH-2缓蚀机理研究

采用失重法测试了Fe~（3+）在酸洗中对钢铁的影响，以及多功能酸洗缓蚀抑雾剂CQH－2对Fe~（3+）腐蚀的抑制作用，采用恒电流法，线性极化技术测试了极化曲线，分析讨论了CQH－2的吸附等温式。     

基于Client／Server体系结构的信息存取系统的设计

本文介绍了一个基于Ｃｌｉｅｎｔ／Ｓｅｒｖｅｒ体系结构的信息存取系统的设计思想，其中重点介绍了此系统中实现信息传递功能的公告服务器的设计与算法。     

Linearization learning method of BP neural networks

Feedforward multi-layer neural networks have very strong mapping capability that is based on the non-linearity of the activation function, however, the non-linearity of the activation function can cause the multiple local minima on the learning error-surfaces, which affect the learning rate and solving optimal weights. This paper proposes a learning method linearizing non-linearity of the activation function and discusses its merits and demerits theoretically. Supported by Wuhan Shenguang Project, the National Natural Science Foundation of China and the 863 High Techology Project Zhou Shaoqian: born in Mar. 1962,Ph. D graduate student