煤炭企业网络建设及其效用分析

网络建设是信息化建设的前提和保证。文中通过对煤炭企业信息化网络建设的规划、方案、实施和网络建成后的效用的分析,指出了网络建设在煤炭企业生产、管理中的重要作用。     

对自备电厂管理的若干问题探讨

近年来电力紧缺,一些用电企业建了一批中小型机组的自备电厂,由于数量较多,缺乏有效管理,并网运行后影响到电力系统的安全经济。为此,本文对自备电厂作了分类及要求,以便于界定;并提出了关于自备电厂建设和加强对自备电厂管理的一些建议、要求和措施。     

环鄱阳湖区风能资源监测网建设方案探讨

分析了风电场建设对风能资源监测网建设的需求,提出了风能资源监测网的建设目标,设计了其结构与功能,从而为区域级风能资源监测设计了一种建设方案.     

质量目标--烟叶生产基地发展的关键问题

本文阐述了质量目标在烟叶生产基地建设中的重要性,列举了当前烟叶生产基地建设中质量目标存在的四个方面的问题,提出了质量目标的构建者、构建流程以及构建中应注意的几个问题.     

气化炉砌筑技术改进对施工质量的影响

本文介绍了8.53Mpa渣油型气化炉拱顶弄口炉底的砌筑改进方法,阐明其提高耐火衬里的施工质量和延长气化炉寿命的作用原理,并取得了良好的经济效益。     

Screening and construct‐specific detection methods of transgenic Huafan No 1 tomato by conventional and real‐time PCR

Genetically modified (GM) tomatoes have been approved for commercialization in many countries since the first GM tomato FLAVR SAVR was permitted for planting in 1994. In China, GM tomato Huafan No 1 with a character of long shelf‐life was the first GM plant which was approved for commercialization in 1996. To meet the requirement of the GM tomatoes labeling policy that has been actualized in China since 2001, screening and construct‐specific PCR detection methods for detecting the universal elements transformed into tomato, such as cauliflower mosaic virus 35S (CaMV35s) promoter and the nopaline synthase (NOS) terminator of Agrobacterium tumefaciens, and the specifically inserted heterologous DNA sequence between CaMV35s promoter and anti‐sense ethylene‐forming enzyme (EFE) gene were set up. To make the detection methods normative, a novel single copy tomato gene LAT52 was also used as an endogenous reference gene in the PCR detection systems. The limit of detection of screening and construct specific detection methods for Huafan No 1 was 68 haploid genome copies in conventional PCR detection, and three copies in TaqMan real‐time PCR detection. The limit of quantitation of screening quantitative PCR assays for Huafan No 1 was three copies and was 25 copies for construct‐specific quantitative PCR. Two samples with known Huafan No 1 tomato content were detected using the established conventional and real‐time PCR systems, and these results also indicated that the established Huafan No 1 screening and construct‐specific PCR detection systems were reliable, sensitive and accurate. Copyright © 2005 Society of Chemical Industry     

回采巷道锚杆支护及其机具的应用研究

通过分析研究回采巷道锚杆支护发展过程中出现的诸多新问题，作者认为，为使锚杆支护在回采巷道中得到恰当地应用，必须对大量的新锚杆和新机具加以系列化、规范化；并在多年试验研究的基础上，就回采巷道中锚杆类型、锚杆直径和施工机具等系列化、规范化提出了一些建议。     

当前电镀园区的建设与存在的问题

本文简要论述了办好电镀因区的基本条件，对当前电镀园区建设中存在的问题进行了探讨。     

基于PCL技术的定位系统概述

基于PCL技术的定位在电子战领域越来越受到重视。文中以表格形式列出国内外现有该系统的结构、性能，表述了目前可用的外辐射源和所采用的PCL等主流技术，着重阐述了直达波、地杂波抑制和微弱信号检测等系统实施的7个关键问题，最后讲述并分析了该系统的最新动态与发展趋势。