CAD中表格文档的计算机辅助实现方法的研究

产品CAD系统研究中，产品技术资料的处理通常以图形文档为主，但是，表格文档作为产品技术资料的重要组咸部分，在CAD作业中同样需要认真对待，特别是在电力变压器这类机电产品设计中表格文档所占比重比较大，显得尤为重要。本文对表格文档的组成形式、特点作了一些研究，并对CAD作业中表格文档的计算机辅助实现方法作了比较详细的介绍。     

浅谈企业技术标准体系的建立

企业技术标准体系是企业生产、经营、管理的技术依据,根据国内企业标准化工作的总体现状,综述了企业技术标准化体系策划和建立的过程、体系实施的保证措施、体系评价和改进等.     

胜利油田沾14-平18井水平段悬空侧钻技术

沾14-平18井在水平段正常地质导向钻进时,由于地层突然变化导致井眼轨迹偏离储层,然后在储层的上部紧邻井段,采用悬空侧钻技术成功地回到储层,悬空侧钻避免了水平段打水泥塞,不仅减少了钻井周期,提高机械钻速,还提高了储层钻遇率,为实现预计油气产量提供了保障。文中介绍了该井产层段基本情况、侧钻缘由及悬空侧钻的技术原理、侧钻点的选择依据、钻具组合、主要技术措施、施工简况及效果,得出了一些认识和建议。     

麦尔兹石灰窑在冶金行业的应用与技术创新

针对麦尔兹窑在冶金行业的应用及发展,介绍了麦尔兹石灰窑的技术优势、常见的故障和解决措施,同时介绍了对麦尔兹窑所作的几项技术改进。     

75t/h循环流化床锅炉运行和技改实践

随着经济的发展和人民生活水平的提高,热电厂的规模和数量得到了快速增长。循环流化床锅炉由于自身的优点,在热电厂中得到了广泛的应用。笔者对青岛恒源热电有限公司的3台75t／h循环流化床锅炉运行中出现的问题进行了分析,介绍了相应的技术改造措施,改造后锅炉在电厂运行中取得了较好效果。     

中国石油2004年乙烯业务概述

回顾了中国石油所属乙烯装置2004年的生产情况,总结生产管理、技术进步及改造发展工作。介绍了2005年的工作目标和任务。     

燕化200kt/a气相法聚丙烯装置技术改造设计

从设计角度对燕化200kt/a气相法聚丙烯装置的技术改造进行了详细分析和说明。装置改造获得了最大的经济效益，为国内同类装置进行技术改造提供了经验。     

合成氨装置铜洗塔的技术改造

针对铜洗塔存在吸收液循环量不足等缺点,对其内件如填料、液体初始分布器和液体收集再 分布器等进行了技术改造。改造后,铜洗塔的生产能力提高20％以上。     

影响检测实验室结果质量的要素和解决措施

分析并运用检测实验室能力通用要求和资质认定准则相关规定,提炼出影响检测结果质量的主要要素,提出了确保检测结果质量的有效措施,旨在指导实验室更科学有效地开展检测结果质量的保证工作。     

Replacing fossil oil with fresh oil – with what and for what?

Industrial chemicals and materials are currently derived mainly from fossil‐based raw materials, which are declining in availability, increasing in price and are a major source of undesirable greenhouse gas emissions. Plant oils have the potential to provide functionally equivalent, renewable and environmentally friendly replacements for these finite fossil‐based raw materials, provided that their composition can be matched to end‐use requirements, and that they can be produced on sufficient scale to meet current and growing industrial demands. Replacement of 40% of the fossil oil used in the chemical industry with renewable plant oils, whilst ensuring that growing demand for food oils is also met, will require a trebling of global plant oil production from current levels of around 139 MT to over 400 MT annually. Realisation of this potential will rely on application of plant biotechnology to (i) tailor plant oils to have high purity (preferably >90%) of single desirable fatty acids, (ii) introduce unusual fatty acids that have specialty end‐use functionalities and (iii) increase plant oil production capacity by increased oil content in current oil crops, and conversion of other high biomass crops into oil accumulating crops. This review outlines recent progress and future challenges in each of these areas. Practical applications: The research reviewed in this paper aims to develop metabolic engineering technologies to radically increase the yield and alter the fatty acid composition of plant oils and enable the development of new and more productive oil crops that can serve as renewable sources of industrial feedstocks currently provided by non‐renewable and polluting fossil‐based resources. As a result of recent and anticipated research developments we can expect to see significant enhancements in quality and productivity of oil crops over the coming decades. This should generate the technologies needed to support increasing plant oil production into the future, hopefully of sufficient magnitude to provide a major supply of renewable plant oils for the industrial economy without encroaching on the higher priority demand for food oils. Achievement of this goal will make a significant contribution to moving to a sustainable carbon‐neutral industrial society with lower emissions of carbon dioxide to the atmosphere and reduced environmental impact as a result.