软起动器在烧结机混料系统中的应用

软起动器以微处理器为核心，能够产生平滑的电压起动曲线，可任意设置稳定的起动电流，并具有多种保护。张钢24m^2烧结机混料系统应用软起动器后，交流电机起动平滑、无噪声，年节电5．6万kW．h，经济效益约2．4万元。     

直流励磁机电刷打火的常见原因及对策

主要介绍了中铝公司山西分公司自备热电厂6台发电机组的励磁机电刷打火的常见原因的分析和处理方法。     

塔里木盆地塔中沙漠区高分辨率地震勘探效果

塔中沙漠区地表被北东—南西向条带状沙层所覆盖,地形起伏剧烈,松散沙层厚度变化巨大,给地震资料采集、处理、解释带来了很大的困难。通过联合攻关,从地震波激发能量下传和反射波接收的研究入手,实现了全部潜水面以下激发,因地制宜、避高就低埋置检波器优化观测系统;针对该区石炭系和志留系低幅度构造、薄储层圈闭难以落实,奥陶系内幕地震资料反射波能量弱、信噪比低、叠加成像困难等问题,开展了沙丘对地震波吸收衰减分析和补偿技术、地表一致性处理技术、多域迭代静校正技术、精细速度场模型确立和偏移成像等配套技术的研究开发与应用。从而极大地改善了塔中沙漠区地震资料的品质,使中深层的石炭系、志留系、奥陶系对应的地震剖面主频从18～20Hz提高到36～40Hz;形成了塔中沙漠区油气勘探技术系列,精细刻画了塔中Ⅰ号带,锁定了油气勘探目标,推动了台盆区油气勘探再掀新高潮。     

浅谈我国旋转防喷器技术的现状与发展

介绍了我国旋转防喷器技术的发展现状，分析了几种不同类型旋转防喷器的结构特点，指出旋转防喷器的发展方向及其与国外同类技术之间的差距。     

气动冲击器研究现状及发展趋势

阐述了气动冲击旋转钻井用气动冲击器国内外近期的研究现状,以及各类冲击器的结构和性能参数,并提出了气动冲击器的发展趋势。     

Application of a Three-dimensional Wind Driven Circulation Model to Assess the Locations of New Drinking Water Intakes in Lake Ontario

A 3D transport model is used to perform a comparative analysis of several potential drinking water intakes located along the northwest shore of Lake Ontario between Toronto and Oshawa. The model is specifically used to assess each intake under both long- and short-term transport of a potential pollutant release from the Pickering Nuclear Generating Station and potential and actual pollutant releases from local land sources respectively. A model based on a 500 m grid resolution is calibrated using data collected in the aftermath of the 1992 tritium spill at the Pickering Nuclear Generation Station and subsequently used to simulate long-term transport. A model based on a 100 m grid resolution is verified using drogue studies and used to simulate short-term transport events. Both models are used to assess pollutant levels at each of nine potential intake locations under different wind scenarios and pollutant releases. Field data for the study included water quality and flow measurements from local sewers and rivers, and estimates of pollutant levels from the local waste water treatment plants. This paper describes the model setup for both the long-term and short-term transport models, calibration using field data, long-term transport modeling, short-term transport modeling, and the comprehensive analysis approach used to evaluate the nine potential intake locations proposed. Results indicated that four intakes in particular outperformed other intake locations by maintaining bottom pollutant levels within governmental standards and warning times that exceeded 20 hours.     

爆炸箔起爆系统初始电阻对爆发电流和飞片速度影响的数值模拟

研究了电爆炸箔起爆系统起爆回路初始电阻对爆发电流和冲击片雷管飞片速度的影响规律，分析了影响电爆炸箔起爆系统体系的因素，为在可靠发火条件下降低起爆系统体积提供设计参考。     

9200kW同步电动机全压异步启动及其励磁装置

从结构性能、直接启动、励磁装置等方面全面介绍了大型同步电动机全压异步启动的方法。     

阻尼式限流器参数的设计选择

本文阐述阻尼式限流器参数设计选择和产品系列规划的依据原则，并结合实例说明实施步骤与方法，以有助于限流器的正确设计与选用。     

单片机在监控同步电动机运行功率因数中的应用

介绍如何利用单片机自动控制同步电动机运行时的功率因数。