EMD与KOH溶液的相互影响

利用滴定分析、热失重分析以及XRD方法研究了EMD和KOH溶液混合后的变化。结果表明:碱与MnO2可以相互作用并导致体系温度的升高,碱浓度的下降,EMD中形成Mn3O4以及MnO2中结合水的损失。相互作用的结果与所加KOH溶液的浓度、EMD中的水含量、二者用量的比例关系以及体系的温度有关。     

脉冲相干激光雷达对运动目标成像模拟

针对运动目标，在考虑激光雷达方程、信噪比和自动增益、成像指标、噪声、图像处理等模块的基础上，对脉冲相干成像激光雷达进行了运动目标的成像模拟。     

石油钻井用泥浆泵的新发展

泥浆泵已发展到大功率、大排量、高压力。为适应现代钻井技术的发展,钻井设备制造商开发出了性能更好,体积更小,质量更轻的泥浆泵,以满足钻井承包商适应各种钻井工况的需要。文章简要介绍了近几年国内外新出现的几种泥浆泵。     

唐钢一炼铁厂提高烧结矿质量的实践

介绍了唐钢第一炼铁厂近几年来围绕提高烧结矿质量 ,满足高炉冶炼需求所做的大量工作及成效 ,并提出了今后的打算     

区域性高校网络图书馆参考咨询服务调查分析

作为一种新型馆际合作模式,区域性高校网络图书馆近年来在不断地发展,它在为用户提供了快捷丰富信息服务的同时,也面临着建设过程中的系列问题。在对不同地区网络图书馆调查的基础上,分析了我国主要区域性高校网络图书馆参考咨询服务的现状和面临的问题,并对信息咨询导航、网络服务方式、质量评估标准和馆际深入合作等方面提出了加强和改进的有关建议。     

数字电台在水库雨情遥测系统中的应用

用数传电台实现远程数据采集、监视与控制,具有造价低廉、施工快捷、运行可靠、维护简单、适应性强、扩展方便等优点。在水库雨情遥测子系统中应用,效果很好。     

Numerical Simulation of Independent Advance of Ore Breaking in the Non-pillar Sublevel Caving Method

The mechanism of stress generation and propagation by detonation loading in five separate independent advance of ore breaking patterns is discussed in the paper. An elastic numerical model was developed using AN- SYS/LS-DYNA 3D Nonlinear Dynamic Finite Element Software. In this package ANSYS is the preprocessor and LS-DYNA is the postprocessor. Numerical models in the paper to actual were l：10 and the element mesh was dissected in scanning mode utilizing the symmetry characteristics of the numerical model. Five different advance rates were studied. Parameters, such as the time required to maximum stress, the action time of the available stress, the maximum velocity of the nodes, the stress penetration time, the magnitude of the stress peak and the time duration for high stress were numerically simulated. The 2.2 m advance appeared optimum from an analysis of the simulation results. The results from numerical simulation have been validated by tests with physical models.     

Characteristics of Schottky Barrier Junction Based on Hexagonal Microtube ZnO

Hexagonal microtube ZnO was firstly grown on single crystal p-Si (111) substrates by hydrothermal method, and fabricated Ag/n-ZnO and Au/n-ZnO Schottky junction. Schottky effective barrier heights were calculated by I-V measurement. It is confirmed that the presence of a large amount of surface states related possibly to lattice imperfections existed near the surface leads to the pinning of the surface Fermi level at 0.35 eV below the conduction-band edge. Then the fabricated Schottky barrier junctions are evaluated for their use as UV photodetectors.     

智能支持的LC-QDPDS集成模型关键技术应用研究

质量驱动产品设计(QDPD)是一种产品设计新思想，在分析QDPD国内外研究现状的基础上，建立了智能支持的基于全生命周期质量驱动产品设计系统(LC-QDPDS)的集成模型，详细论述了LC-QDPDS集成模型的五大重要组成模块及其实现的关键技术，并将其应用于仪表新产品开发决策支持系统中。     

武钢RH-MFB技术的初步应用及优化

RH-MFB顶枪装置具有强制脱碳、处理及非处理在线加热、去除真空室结瘤和加铝升温功能.使用MFB顶枪技术已生产405炉钢水.该厂工程技术人员在设计审查、调试及试生产期间对设备、工艺、操作进行不断完善和优化,取得了满意的效果.