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1.
湖北省地质灾害防灾减灾网络信息平台建设思考 总被引:2,自引:2,他引:2
地质灾害防灾减灾工作已形成了以政府部门的管理体系为主体,以群策群防体系、专业监测预警体系、科研专业技术支撑体系和科普宣传教育体系等为辅的五个工作体系,为高效地调度和运用各个工作体系,拟综合构建以“WebGIS”技术为手段的省级地质灾害防灾减灾网络信息平台,实现集数据采集、存储、分级管理、专业综合分析和信息传输与发布等系统功能,为省级地质灾害减灾防灾工作提供技术支撑,可以大大提高政府对地质灾害的防灾减灾的能力,是目前应对地质灾害综合防御的行之有效的手段, 具有较广的应用前景。 相似文献
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以顺流与逆流两种形型的板式换热器为研究对象,通过计算热通量,换热效率,换热温差,对这两种换热器的性能进行比较分析。 相似文献
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本文介绍了铼钠克G—SPEED开放式数控系统的功能、特点以及G—SPEED数控系统往现代模具及零部件加工中的应用方法与技巧。包括在CNC自动车床上的应用、在加工小心及磨床上的应用、在鞋揎机上的应用、在四轴及五轴加工、在高光加工上的应用。 相似文献
4.
罗益锋 《高科技纤维与应用》2014,39(5):1-8
就航天、航空、大型海水淡化装置和深海采油平台所需的关键先进材料及其部件的发展趋势和应用进展作概要的介绍。表明高端装备特别是航空航天和海洋开发利用,是一项复杂的系统工程,需要各种高技术、新材料部件、传感器和大量资金的支撑。指出高性能纤维及其复合材料在高端装备制造中不仅能满足高性能和轻量化要求,对节能减排也有重要贡献,对发展现代国防有极其重要的意义和作用,国家应予大力支持。 相似文献
5.
Dynamic facility layout problem (DFLP) deals with the arrangement of machines in a site as to minimize the sum of materials handling and re-layout costs by considering multi periods. The DFLP studies in the literature provide several different algorithms and utilize the well known test problems to assess their performance. However, real life applications are overlooked. The industries such as footwear and clothing are prone to seasonal demand changes. Therefore, time horizons and layout/re-layout of the machines within the facility should be studied carefully. This study considers a footwear facility and several scenarios are generated by using the real life data. A clonal selection based algorithm is proposed to solve the real life DFLP. The performance of the algorithm, further the effect of time periods on solution quality and applicability of the results are tested and promising results are obtained. 相似文献
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《Petroleum Science and Technology》2013,31(3-4):439-445
Abstract The high stability emulsion of modified petroleum waxes, which has applications in many fields, such as rubber, leather, shoe, wood, paper, ink, and textiles, was prepared with the mixed emulsifiers comprising of nonionic surfactant and anionic surfactant. The experimental results showed that optimal conditions were: amount of the emulsifier 6–8%, emulsifying temperature 85–95°C, stirring velocity 1000–1400 r/min, emulsifying time 20–30 min. 相似文献
9.
Dr. Sylvester Abanteriba 《摩擦学汇刊》2013,56(4):847-851
The cross head guide shoe plate of a large diesel engine operates under a large normal force which presses it against the rails between which it executes both axial and transverse motion. In order to ensure the safe operation of an unconventional bearing such as the guide shoe system of the cross head engine, an algorithm that can be used to predict accurately the oil film thickness that can be achieved for all the engine's operating regimes, is invaluable. A solution of the three dimensional form of Reynolds differential equation can provide the requisite oil film thickness. However, with even the availability of very fast computers and large computer storage capacity this solution for a large axial bearing such as the guide shoe becomes impractical in terms of computation time and computer core requirements. This paper describes alternative simplified algorithm for accurate prediction of the oil film thickness developed in the guide shoe bearing at different operating regimes of the engine. 相似文献
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