建材研究的新热点——黄河淤泥沙综合利用进展及前景展望

简要介绍了黄河淤泥沙的特性及相关情况,论述了黄河於泥综合利用研究的进展及主要成果,概述了其工业化开发的现状,分析了其存在的问题,对其发展前景进行了预测。黄河淤泥沙综合利用工作是关系到国计民生、千秋万代的大事,具有重要的现实意义和深远的历史意义。     

18吨熔锌炉的设计与调试

本文介绍了作者设计的18吨锌熔化炉的结构特点，指出采用辐射拱加热锌锭可有效降低锌液烧损率，采用双回路控制温度可提高锌液温度的稳定性和成品率。     

固定式宽带无线接入技术--LMDS

本地多点分配业务(LMDS)是近年来在国际上兴起的固定式宽带无线接入技术,具有传输容量大、起始费用低的优点,受到了国内外电信业务经营者的普遍关注.文章介绍了LMDS提供的业务类型、工作频率、系统结构和标准化情况,并将LMDS与有线电视网络、ADSL、MMDS等现有的接入技术进行了比较.文章认为LMDS的商业推广尚需解决信号质量、服务区尺寸、费用等制约因素.     

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。     

Preparation of Ultra—fine Aluminum Nitride in Thermal Plasma

Ultra-fine aluminum nitride has been synthesized by the evaporation of aluminum powder at atmospheric-pressure nitrogen plasma in a hot-wall reactor.The average size of aluminum nitride particle is 0.11μm measured by scanning electric mirror(SEM),and the purity is at least over90% evaluated by X-Ray diffraction(XRD).The conversion of Al powder to aluminum nitride is strongly depended on the injection of NH3.Typical experimental parameters such as the feed rate of raw material,the flow rate of ammonia and the position of injecting aluminum powder into the reactor are given.     

TennisViewer: a browser for competition trees

A tennis novice watching a match for the first time might be surprised that the crowd erupts with cheers when a player wins one point, then barely applauds when he wins the next. The crowd is not necessarily fickle; some points are genuinely more important than others because a tennis match is hierarchically structured. One match consists of several sets. One set consists of several games. One game consists of several points. The match-winning point is the most important one. How can we make that importance visible? Our goal is to let a fan, a player, or a coach examine tennis data visually, extract the interesting parts, and jump from one item to another quickly and easily. The visualization tool should help parse the elements of a match. We developed an interactive system called TennisViewer to visualize the dynamic, tree-structured data representing a tennis match. It provides an interface for users to quickly explore tennis match information. The visualization tool reveals the overall structure of the match as well as the fine details in a single screen. It uses a 2D display of translucent layers, a design that contains elements of Tree-Maps and of the Visual Scheduler system, which was designed to help faculty and students identify mutually available (transparent) time slots when arranging group meetings. TennisViewer provides MagicLens filters to explore specialized views of the information and a time-varying display to animate all or part of a match     

HT－7托卡马克的八管弹丸注入器

介绍了用于ＨＴ－７托卡马克的的八管弹丸注入器的物理、工程设计原理和结构特点及配置的各种诊断手段。注入器采用气动发射技术，弹丸为１ｍｍ×１ｍｍ，１．２ｍｍ×１．２ｍｍ，１．５ｍｍ×ｌ．５ｍｍ圆柱体氢丸，丸速０．８～１．５ｋｍ／ｓ工作频率１～８Ｈｚ。     

置换通风与个体化微环境控制

介绍了传统的全空间空调方式，指出全空间空调方式不能同时为所有人提供可接受的热感觉和室内空气品质，而置换通风和个体化控制的联合将是一种理想的空调方式，在更大程度上满足人们的不同需要。     

车载制氧机加装预冷装置的研究与实现

航空兵部队地面保障装备之一的车载移动式制氧机，采用封闭循环水冷却，由于受到使用条件的限制，多数情况下冷却效果不尽理想，加装蒸汽压缩预冷装置，即可较好地了和低冷却系统温度，提高制冷量和整机使用寿命，又可满足整车机动性，动力等技术要求。