奈韦拉平合成进展

本文介绍了抗HIV新药奈韦拉平的合成路线研究进展，并评价了其优缺点。     

关联规则算法在法规备案审查工作中的应用

根据宪法和有关法律规定,全国人大常委会监督宪法和法律实施可以采取多种形式,法规备案审查正是其中一个重要的监督方式.我国的法规备案审查制度包含着违宪性审查和违法性审查两个层次的内容,其最高层次的法律渊源是宪法.现行宪法规定,全国人大常委会有权撤销国务院制定的同宪法、法律相抵触的行政法规、决定和命令,撤销省、自治区、直辖市国家权力机关制定的同宪法、法律和行政法规相抵触的地方性法规和决议.法规审查是一个复杂的过程,对具体负责审查工作的人员有极高的法律法规知识要求.因此,提高法规审查的科学性、客观性和准确性,是当前法规审查工作重要的课题.本文结合当前法规备案审查的实际,提出了法规关联分析评价指标体系,应用于法规审查工作中,并在此基础上设计并实现了法规备案审查系统.     

A literature survey and an experimental study of coal devolatilization at mild and severe conditions: influences of heating rate, temperature, and reactor type on products yield and composition

Coal devolatilization studies to maximize the yield of condensable products by operating at elevated temperatures and heating rates have been published. The objectives of this study were to investigate the influences of relatively mild operating conditions (e.g. relatively low temperature and pressure) on product quality, by comparing devolatilized products obtained at various temperatures and heating rates. Fixed bed, fluid bed, and entrained flow reactor units were used to obtain pyrolysis products. In addition, literature data on tar yields in various reactor units at a range of temperatures and residence times were surveyed and compared with experimental data. The liquids were characterized by a number of techniques, including field ionization mass spectroscopy (f.i.m.s.), sequential elution solvent chromatography (s.e.s.c.) and elemental analysis. The results demonstrate that the quality and yield of liquids obtained at a rapid heating rate are functions of peak pyrolysis temperature. It was shown that at a rapid heating rate, the yields of heavier polyfunctional groups (i.e. hydrocarbons with greater mean molecular weight) are greater than those obtained in the fixed bed slow heating rate reactor. The liquids generated at a slow heating rate are of lower molecular weight, viscosity, and sulphur content, and of higher H/C atomic ratios compared with the liquids obtained in a rapid heating rate unit. The effect of increasing the maximum pyrolysis temperature (at a constant slow heating rate) was to increase the yield of light gases (mainly H) at the expense of char hydrogen content and char reactivity. The tar yield is not markedly influenced when the peak devolatilization temperature is increased at a relatively slow heating rate. However, the quality (as defined by the H/C (atomic) ratio) of the liquids, and the reactivity (in air) of char, was reduced when the peak pyrolysis temperature was increased. At a rapid heating rate, the primary products, which have many structural characteristics of the parent coal, are devolatilized. The quality of the liquids obtained at a rapid heating rate is, therefore, determined by the devolatilized primary coal fragments evolved at the devolatilization temperature. In a slow heating rate fixed bed unit, however, the primary coal fragments undergo additional cracking reactions which involve stabilization of free radicals by donatable hydrogen. This leads to the formation of low molecular weight hydrocarbons of relatively higher quality. In-situ (both intraparticle or extraparticle) stabilization of reactive coal fragments by donatable hydrogen may lead to a significant improvement in the overall quality of the pyrolysis liquids in a fixed bed system in which time-temperature history is conducive for such reactions.     

旋转注射式反应注射成型技术混合方式剖析

为了克服反应注射成型技术混合方式存在的缺点，新近出现了一种旋转注射式－ＲＩＭ技术。该技术采用低速旋转注射剪切层流混合方式，具有能耗低，混合效果好，应用广泛等特点，是一种很有应用潜力的新技术，文内对该技术的混合方式进行了简要剖析。     

橡胶注射成型机的特点与进展

对橡胶注射成型机主要部分的结构进行了评述，并对橡胶注射成型工艺的发展状况了简述。     

我国橡胶助剂工业的现状及前景

介绍了我国橡胶助剂工业的历史和现状，分析了存在的问题及发展机遇，并对我国橡胶助剂工业的发展提出建议。     

塑木复合材料市场和发泡塑木复合材料

综述了塑木复合材料性能、应用、市场及其预测和发泡塑木复合材料技术、发展动向,重点介绍了发泡塑木复合材料的优点、发泡剂、基础树脂、木纤维和工业化产品。     

法治视野下儒家和谐思想的价值反思

儒家文化包含丰富的和谐思想底蕴和精华,对建设现代社会主义和谐社会具有重要的启迪和借鉴意义。本文以现代法治视角,对社会主义和谐社会理论和传统儒家和谐思想进行深入解读,剖析儒家和谐思想与现代社会的不相适宜,并以马克思主义、中国特色社会主义理论体系以及现代民主法治理念为指导,对儒家和谐思想的现代转换和科学构建作出一些思考。     

面向实践性教学的当代文学史写作

在面向实践性教学的教育背景下,当代文学史的写作应当从学生主体出发,打破研究型、教学型的简单对立,将学术研究的思考过程引入教学,让学生在体验文本的同时培育问题意识,从而获得真正属于中文专业学生的实践能力。正是从这一认识出发,当代文学史写作中经典选择的难题才能转化成丰富的实践性资源。