HRB400带肋钢筋切分工艺的实践

简明介绍了攀钢集团成都钢铁有限公司棒材连轧生产线应用切分轧制技术生产HRB400小规格带肋钢筋的工艺、设备、技术、坯料控制特点及生产中值得注意的几个问题。     

直接还原铁在我厂电弧炉炼钢中的应用及效果分析

概述了直接还原铁的特性及在我厂电弧炉炼钢中的使用情况，并将其效果作了进一步分析。     

普通钢筋混凝土结构设计中应注意的若干问题

简要介绍了普通钢筋混凝土结构设计中结构计算模型的建立、梁板计算模式的确定以及计算参数的取值等几方面应注意的问题，提出了相应的处理方法和要求。     

Growth and optical properties of Er,Yb:YAl3(BO3)4 crystal

Single crystal of erbium, ytterbium-codoped yttrium aluminum tetraborate Er,Yb:YAl₃(BO₃)₄(Er,Yb:YAB) has been grown by the flux method. The absorption spectrum in the visible and NIR regions of Er,Yb:YAl₃(BO₃)₄ crystal are measured at room temperature and fluorescence spectrum of Er,Yb:YAl₃(BO₃)₄ crystal are also measured at room temperature, excited by 976 nm laser. Not only the strong NIR emission peaks located at 1548 nm was observed, but also the visible up-conversion luminescence has been found. The specific heat of the Er/Yb:YAB crystal at room temperature is 0.81 J/g °C.     

在输电网络开放环境下电力市场运行和购电合同的设计

探讨了开展发电企业向大用户直接供电的条件，提出了一种输电网络开放环境下的电力市场运营模式，即中长期金融合的交易和实时平衡市场相结合的电能交易模式。这种模式使市场竞争主体能够有效规避市场风险但又不降低市场竞争力度，而且市场主体之间的合约履行又不制约电网的安全可靠运行，市场运作简单、高效、透明。     

电网联合反事故演习技术支持系统

从调度运行的角度介绍了陕西省电力调度中心参加2002年西北电网联合反事故演习中技术支持系统(电网仿真系统、网上直播系统、通讯系统、视频系统)各部分的功能及配置.     

美国电科院网站商业运营的探讨

文章联系电力系统网站的实际情况,仔细分析了美国电科院网站是怎样向济鉴者展示其功能、内容和营销策略以及该网站在市场和消费分析方面所做的工作,如何最终达到了网站的成功商业运营.     

Optimization of power input diagram of 50 t UHP-EAF

In order to improve operation for shortening tap to tap time and saving electrical energy, on the base of no-linear reactance model, the electrical characteristics of the 50 t UHP-EAF in Fushun Special Steel Co. Ltd. were analyzed. Considering steelmaking process conditions, the optimum power-input diagrams were investigated, which can save energy, lower consumption, and raise productivity. This has been verified by production contrast tests. Application of the optimum curve in 50 t UHP-EAF indicates that research method is correct, the 50 t UHP-EAF runs smoothly with lowering electrical energy by 29.35 kW.h/t and shortening power on time by 3 rain. The general steps of making optimum power-input specification is also given.     

单壁碳纳米管及应用现状

讨论了单壁碳纳米管独特的结构、性质和制备方法。由于单壁碳纳米管独特的结构，而导致其独特的电性质、吸附性和力学性能，对单壁碳纳米管目前在电子领域、储氢和复合材料方面的应用研究作了综合阐述。