铁通资源管理系统的设计和实现

在分析铁路通信资源结构的基础上,利用地理信息系统技术、数据库技术和客户/服务器(C/S)模式,为铁通(ChinaTietong)各级分公司和运营部门提供一套较为完善的资源管理信息系统。文中分析了铁通资源的结构与资源之间的关联,介绍了系统功能、物理结构及体系结构,详细分析了数据库设计、地理信息系统和系统安全性所采用的关键技术。这套系统的应用对铁通网络管理的现代化将起到重要的推动作用。     

热丝辅助ECR CVD制备cBN薄膜

立方氮化硼(cBN)是一种具有广泛应用价值的Ⅲ-Ⅴ族二元化合物，其优异性质可与金刚石相比拟或胜之．立方氮化硼的制备与性能研究是近二十年来材料领域关注的焦点之一．我们用热丝辅助ECR CVD方法制备了cBN薄膜，并初步探讨了热丝对cBN形成的作用．偏压并不是cBN形成的唯一主要条件，活性粒子也有非常关键的作用．     

The wheel–rail interface—some recent accidents

The importance of the wheel–rail interface to the safe operation of railways is discussed. Some aspects of the history of rails and wheels are introduced. Several recent accidents involving the wheel–rail interface are described. The great importance of operating both vehicles and track as a system is emphasized, together with the necessity of maintaining both in good condition.     

Possibilities and extension of XRD material response analysis in failure research for the advanced evaluation of the damage level of Hertzian loaded components

Due to clearly distinguishable damage symptoms, it is differentiated between the surface and sub‐surface failure mode of rolling bearings. Material states red out by X‐ray diffraction (XRD) residual stress measurements point to a variety of loading conditions especially at raceway surfaces that are associated with several competing failure mechanisms. The corresponding lifetime reduction can range from the lower fatigue strength region to material ratcheting in extreme cases. Relevant position of the microstructural changes and nature of the failure mechanisms are characterized. The time alteration of the XRD material parameters measured at or near the surface and at the depth of the maximum equivalent stress correlates, in a different manner, with the statistical parameter of the 10 % bearing life. Both failure modes are illustrated by concrete examples. Contaminated lubricant and boundary lubrication, which represent practically important surface‐induced failures, are discussed in more detail. Gray staining, i.e. shallow pitting, often occurs without distinct indication of global material aging by means of XRD characteristics. Here, scanning electron microscopy observations and electron microprobe analyses point to corrosion fatigue as acting surface failure mechanism. The interaction between material and lubricant under complex loading regimes particularly of mixed friction and corrosion opens further failure research areas in the field of tribology.     

焚烧炉控制系统

化工废气、废液焚烧炉是一种常用的环保处理装置，就其工艺详细介绍焚烧炉燃烧过程的控制及其安全联锁措施。     

加入WTO带给中国钼业的机遇和挑战

目前中国的钼储量和产量均列世界第二位，今后中国钼业应加快产业结构调整，拓展钼的应用领域，重点发展钼深加工产品，变资源优势为经济优势。     

RAID技术综述

通过对各种RAID级别的实现原理进行描述，综合分析了各种模式的性能、优缺点以及应用范围。     

厚度控制技术在中厚板轧制生产中的应用

本文探讨了影响中厚板厚度波动的因素，结合安钢中板厂2800mm轧机按合同轧制一批交货重量不大于理论重量船板的生产实践，总结了实际生产中实现高精度厚度控制的有效方法。     

国外硬岩连续采矿技术的新发展

本文综述国外硬岩连续采矿技术的最新进展,包括:钻孔劈裂破岩、液压冲击式采矿、等离子爆破、自动钻爆和高压水射流破岩系统。     

热浸镀铝护栏的生产工艺研究

热浸镀铝护栏的生产通过除油→除锈→烘干→热浸镀→精整等过程完成，最佳热浸镀温度为７３０～７５０℃，保温时间３～８ｍｉｎ，护栏提升速度１ｍ／ｓ