顺槽设备整体自移技术的研究与应用

为适应井下工作面顺槽设备快速移动的要求，研制开发了顺槽设备整体自移技术和装备．章在整体自移原理、设备防滑、支撑油缸的保护、输送能力减少的补偿以及皮带机机尾滚动自移等方面进行了分析和计算的介绍．该技术具有多项自主知识产权，可极大提高我国煤矿顺槽设备的机械化水平．     

三峡输电工程建设极大促进我国架空线缆技术进步

章分析了三峡500kV输电工程建设对架空线缆的技术要求，总结了近年来我国线缆行业依托三峡输电工程建设大力开展技术创新工作所取得的令人瞩目的技术进步。三峡工程极大地促进了我国架空线缆制造业水平的提高，使我国架空线缆制造水平、产品质量和生产能力上了一个新台阶，包括钢芯铝绞线、铝合金线与铝包钢线及其大跨越导线、光纤复合架空地线(OPGW)和高强度与特高强度镀锌钢线等。     

分析停电原因 提高供电可靠性

可靠性是衡量一个企业级别的重要指标之一，反映对用户连续供电的能力。本篇分析了引起停电的原因并提出了提高可靠性的方法。     

Speech Recognition Technology and Students With Writing Difficulties: Improving Fluency.

The present study investigated the effects of speech recognition technology (SR) and advance planning on children's writing processes. Fluent and less fluent writers, ages 11 to 14, composed 4 narratives, via handwriting and SR, both with and without advance planning. Less fluent children's handwritten narratives were significantly inferior to those of fluent children in terms of length, quality, and surface errors. For less fluent writers, SR (a) significantly increased the length and (b) decreased the surface errors of narratives. Although narrative length related positively to holistic quality, SR did not significantly improve quality. Advance planning helped children to compose more fully developed stories. For children with writing difficulties, advance planning and SR may each independently support text generation. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

我国糖业废水处理进展及其污染防治对策——以广西糖业为例

综述了国内糖蜜酒精废液与中、低浓度生产废水处理的研究成果 ,初步分析了这些处理工艺的技术经济性 ,并针对广西糖业废水处理现状 ,提出高浓度糖蜜酒精废水采用厌氧生物处理 ,厌氧处理出水并入中浓度生产废水好氧处理 ,好氧处理出水部分用于冲灰 ,部分与低浓度生产废水混凝气浮后再回用于生产的综合利用对策     

Thermal efficiency characteristics of hydrogen internal combustion engine

To study the economic advantages of hydrogen internal combustion engine,an experimental study was carried out using a 2.0Lport fuel-injected(PFI)hydrogen internal combustion engine.Influences of fuel-air equivalence ratioΦ,speed,and ignition advance angle on heat efficiency were determined.Test results showed that indicated thermal efficiency(ITE)firstly increased with fuel-air equivalence ratio,achieved the maximum value of 40.4%(Φ=0.3),and then decreased whenΦ was more than 0.3.ITE increased as speed rises.Mechanical efficiency increased as fuel-air equivalence ratio increased,whereas mechanical efficiency decreased as speed increased,with maximum mechanical efficiency reaching 90%.Brake thermal efficiency(BTE)was influenced by ITE and mechanical efficiency,at the maximum value of 35%(Φ=0.5,2 000r/min).The optimal ignition advance angle of each condition resulting in the maximum BTE was also studied.With increasing fuel-air equivalence ratio,the optimal ignition angle became closer to the top dead center(TDC).The test results and the conclusions exhibited a guiding role on hydrogen internal combustion engine optimization.     

玻璃微珠的应用研究进展

介绍了玻璃微珠的类型及其特性,综述了近年来玻璃微珠的应用研究进展,包括在建材、塑料、橡胶、涂料、医药等领域的应用情况。改性后的玻璃微珠可应用于电磁屏蔽和吸波材料的制备,拓宽了其应用范围,并分析了其应用前景。     

环保型防污涂料研究进展

简要介绍了防污涂料中的有毒防污剂和VOC对人体和环境的危害,以及一些国家的应对策略。从防污剂的无毒化、低表面自由能树脂、导电防污涂料、低VOC防污涂料等方面综述了环保型防污涂料研究和开发取得的进展。并提出了需要对导电防污涂料和低VOC防污涂料进一步加强研究的建议。     

带嵌件的塑料线圈骨架注射模设计

分析了带嵌件的塑料线圈骨架的结构特点,介绍了该注射模的整体结构和设计要点,讨论了嵌件的安装问题,提出了采用电磁装置来解决此类问题的方法,设计了二次脱模机构和杠杆先复位机构。     

拱坝体形优化研究进展

简要回顾了近年来拱坝体形优化理论研究的进展及成果,指出了今后在应用中将面对的困难及发展前景。