南水北调中线工程战略环境影响评价探讨

根据南水北调中线工程的特点,从宏观性、全局性、综合性和协调性提出了环境评价指标体系。研究和评价了中线工程对我国可持续发展战略影响、水资源优化配置与可持续利用、增强综合国力和地区竞争力、促进京津华北地区可持续发展战略问题。进行了中线工程对宏观经济、区域经济发展,社会公平、城市化进程、改善生活质量等社会发展,以及水环境保护、生态完整性与重要敏感生态问题、移民与可持续发展等宏观影响的评价研究,提出了保护水环境、生态修复、防护与保护的战略对策措施。     

图书饱和流通率与流通统计分析

提出了图书饱和流通率的概念，讨论了饱和流通率的确定方法与计算公式。结合我校近年来图书流通统计情况，就计算机类图书进行了饱和流通率的分析。     

间接电解氧化合成邻氯苯甲醛

采用Ｍｎ（Ⅲ）为氧化媒质，以邻氯甲苯为原料，苯做溶剂，在浓硫酸存在下，以甲丁基溴化铵为相转移催化剂，用间接电解氧化的方法合成了邻氯苯甲醛。通过正交实验考察了硫酸浓度、反应温度、反应时间、原料配比４个因素对产品收率的影响。确定最佳反应条件：硫酸浓度８．０ｍｏｌ．Ｌ＾－１，反应温度６３℃，原料配比：邻氯甲苯：「Ｍｎ＾３＋」为５：４，反应时间４ｈ，最高收率达５５％。     

Physicochemical Investigation of the Reaction of Components of the Si — Al — O — N — Ti System in the Si3N4 — Al2O3 — AlN — SiO2 — TiN — TiO2 Region. Part 2. Subsystems Si3N4 — AlN,TiN — AlN,Al2O3 — AlN

The reaction of components of the Si — Al — O — N — Ti system in its elements Si ₃N₄ — AlN, TiN — AlN, and Al ₂O ₃ — AlN was investigated by differential thermal and x-ray diffraction analysis. It was established that upon hot pressing mixtures of Si₃N ₄ and AlN (up to 1950°C) free silicon is formed by the decomposition of Si ₃N₄, which reacts with oxygen present as an impurity to form SiO. When TiN reacts with AlN a phase with the spinel structure (Al₂₃O ₂₇N ₅), which can form only in the presence of excess oxygen, appears in addition to the initial components. Spinel is also produced by the reaction of Al ₂O₃ with AlN. In this case a eutectic between Al ₂₃O₂₇N₅ and Al₂O₃ is observed.     

Effect of Oxidizers on the Growth of Indium Oxide Films from Indium Acetylacetonate Vapor

The introduction of oxidizers (O₂, N₂O, N₂O + O₂ mixture) into the gas phase (argon) affects the growth rate, composition, and properties of the films prepared via thermal decomposition of indium acetylacetonate, In(acac)₃. N₂O increases the average growth rate of the films by a factor of 3. It was proved by the radical fixation method that N₂O oxidizes In(acac)₃ molecules chemisorbed on the substrate, thus changing the composition and improving the electrical properties of the films.     

Effect of the Molecule Structure of Acetylene Compounds on the Kinetics of the Electrode Reactions of Iron in Hydrochloric and Sulfuric Acids

The electrochemical interaction of acetylene compounds, both with and without -hydrogen, with iron in hydrochloric and sulfuric acids was investigated by potentiostatic voltammetry on a rotating disk electrode and capacitance measurements on a stationary electrode. The tendency of acetylene compounds to electrochemical reduction correlates with their ability to polymerize on iron in acidic solutions. The presence of -hydrogen atom determines the ability of an acetylene compound to polymerize on iron, thus inducing the secondary inhibition. The compound containing no -hydrogen manifests only adsorption mechanism.     

Structure Formation,Electrophysical and Mechanical Properties of an Electrically Conducting Ceramic Composite Based on Silicon and Boron Carbides

How the structure of electrically conducting ceramic composites in the SiC B₄C system is formed has been studied. The mechanical and electrophysical properties have been investigated as a function of the ratio of the components and the sintering conditions.     

基于ASP技术的现代远程教育网络平台的设计与实现

就如何构建一个用于实施远程教育的网上平台--网络学院提出了自己的建设模式,并用ASP技术予以初步实现.     

Models of Computation of a Multialternative Prediction Graph on the Basis of Analytical Estimates

Problems of the theory of construction and computation of prediction graphs are considered. Questions of solution of the problem of quantitative analysis of prediction graphs are investigated.__________Translated from Kibernetika i Sistemnyi Analiz, No. 2, pp. 91–106, March–April 2005.     

图像的二值化处理

在某些情况下，整体阈值选取方法（即根据整幅图像确定一个阈值)不宜采用，而应代之以局部阈值选取方法，本文采取局部区域自动阈值选择的方法，解决了显微细胞图像分割困难的问题。