265m2烧结主传动柔性减速机受力分析及改造

针对天钢集团公司炼铁厂烧结车间265m^2烧结机主传动柔性减速机出现的吊挂滚动轴承损坏和传动异响问题，分析了烧结机传动装置定位轴承受力情况，找出产生故障的原因，提出具体的改进措施和改造方案。经实践表明，效果良好。     

V-Nb微合金高强度热轧H型钢桩BS 55C的开发

马钢用60 t顶底复吹转炉冶炼,钢包炉吹氩、喂线和成分微调,异型坯(mm750×450×120)弧形连铸和H型钢万能轧机轧制工艺研制了碳当量Ceq≤0.42%的V-Nb微合金高强度热轧H型钢(%)0.14～0.17C,0.43～0.55Si,1.28～1.45Mn,0.010～0.028S,0.010～0.027P,0.03～0.05Nb,0.08～0.12V.检验统计数据表明,BS 55C热轧H型钢组织为铁素体+珠光体,实际晶粒度9级,屈服强度均在420 MPa以上.     

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.     

网络CAI系统中基于ASP的动态信息交互系统

提出了应用于网络课件中的一个动态信信息交互系统模型，采用asp开发，介绍了系统的实现方法，并对开发过程中的安全问题进行了探讨，提出了解决方案。     

公寓管理与大学生行为习惯的养成

高校学生公寓是学生学习、生活的重要场所，引导学生养成良好的行为习惯有助于学生公寓管理工作的顺利开展。文章从维护高校稳定、增强大学生的法律意识和法制观念、促进大学生自我发展、实现学生公寓“管理”、“育人”职能等方面论述学生行为习惯养成的重要性，并从制度建设、环境教育、文化熏陶、组织保障等方面提出具体对策措施。     

Thermal characterization of gallium arsenic nitride epilayer on gallium arsenide substrate using pulsed photothermal reflectance technique

Thermal conductivity of gallium arsenic nitride (GaAsN) epilayer on gallium arsenide (GaAs) substrate prepared by molecular beam epitaxy technique was measured using pulsed photothermal reflectance technique. Three-layer model incorporated thermal boundary resistance was applied to extract the thermal properties from the sample's photothermal response. Within the thickness ranging from 20 to 80 nm, no thickness dependent relationship with thermal conductivity of GaAsN epilayer was found, and the average thermal conductivity is approximately 27 W/mK at room temperature. The thermal boundary resistance at the Au/GaAsN interface is in the order of 10⁻⁸ m²K/W.     

The eutectic generation effect and chemical modification of thermal lance cutting of concrete

Thermal lance is one of the methods for concrete cutting/piercing. The burning lance not only provides high temperature to melt the concrete target in the form of lava, but also has a eutectic effect changing the lava melting temperature. The eutectic effects by adding lance material such as FeO, Al₂O₃ and TiO₂ to concrete (SiO₂-CaO) system are discussed. The discussion and concrete piercing experiments both show that, due to eutectic generation effects, aluminum and titanium modified lances are not effective on concrete objects although these lances provide high lance temperature. Iron based lance is the most effective thermal lance due to its eutectic generation effect. Experimental results of cutting improvement by using chemically modified iron lance are presented and the eutectic generation effect in this process is discussed.     

结合清洁生产谈目前氯化法钛白生产的污染治理

结合实例说明,搞好清洁生产对氯化法钛白企业治理环境污染,提高企业的经济效益和今后长远发展起着举足轻重的作用和重要的指导意义.