机身壁板复合载荷试验技术研究进展

依据机身壁板的结构形式,阐述了机身壁板结构受力特点,总结了机身壁板强度试验的关键技术。通过国外及国内机身壁板强度试验技术发展现状的介绍,给出了机身壁板试验技术研究方向及建议,为后续壁板试验技术的改进提供参考。     

Spatial distribution of chromium in soils contaminated by chromium-containing slag

To evaluate the metal chromium (Cr) contamination of soil at a chromium-containing slag site by ferrochromium production, the contaminated sites, under slag heap, in the vicinity of slag heap and arable soils near the outlet of sewer channel, and unpolluted site 5 km away from one ferroalloy plant in Hunan Province, China, were selected. The concentrations of total Cr and water soluble Cr in bulk soil samples and profile depth samples were determined. The results show that the soils in the vicinity of slag heap have the highest total Cr content followed by the soils under the slag heap and near the outlet of sewer channel of the factory. The mean concentrations of total Cr in the top soils at above three contaminated locations exceed the critical level of Secondary Environmental Quality Standard for Soil in China by 3.5, 5.4 and 1.8 times. In most Cr polluted soils, total Cr has a relative accumulation in soil depth of 40-60 cm, but this trend is not found in unpolluted soils. The average concentrations of water soluble Cr (Ⅵ) in top soils under slag heap and in the vicinity of slag heap are 176.9 times and 52.7 times higher than that in the uncontaminated soils, respectively. However, water soluble Cr (Ⅵ) contents in soils near sewer channel are all low and the values are close to that in the uncontaminated soils. Although water soluble Cr (Ⅵ) content in soil profiles decreases with soil depths, it in soils under slag heap maintains a high level even at a depth of 100-150 cm. The results imply that the transportation of Cr (Ⅵ) can result in a potential risk of groundwater system in this area.     

土地工程施工计划编制与管理中存在的问题分析与对策

本文主要归纳了计划编制与管理执行的基本经验,采用对比分析法和因果分析法对土地工程施工计划编制与管理中存在的问题进行了分析,并提出了一些相应的完善措施.     

豫西老鹳河流域暴雨洪水特性及洪水过程预报方法的改进

现有的水文预报方法所存在的局限性,决定其不可能完整地模拟出流域所发生洪水的详尽过程,本文根据多年来在这一方面的研究,提出一种简明、快速的汇流预报方法,用以指导防汛调度工作,收到了较好的效果。     

变压器油枕及其安全气道的密封改进

变压器在正常温度运行下油质的劣化除油本身质量外,油和大气接触也是主要原因。为防止油质劣化就要采取措施使变压器中的油不能同大气接触。变压气中油与大气能接触的有两处,即安全气道及油枕中的油面。要使油不与大气接触就必须改造旧的安全气道和油枕的结构。本文结合我厂二台SFPS—60000/110变压器的密封改进,总结了变压器油枕及安全气道的密封改进方法及存在问题。     

永济电厂微机在线监测及信息处理系统

利用先进的计算机数据采集技术将电厂现场分散的、时刻变化的、各种有用数据记录下来，实时地显示给当班的运行值长及总工、厂长办公室；将这些数据的正常和异常变化存贮到ＮＯＶＥＬＬ网络的主服务器中，供日后进行数据的分析、查询、打印；同时软件具有电气系统图、趋势图、直方图等多种实时画面；本文介绍该系统的构成、功能、特点及意义。     

变电站污闪事故分析与防污闪措施

扼要叙述１９９１年发生的三次变电站污闪事故，分析事故根源，说明永济地区变电站污闪规律，并提出防止污闪的措施，总结永济电厂近几年防污闪工作经验，指出在几种防污闪涂料中，ＣＦＴ—４长效涂料更适用于永济地区变电站防污闪。     

QQ被盗，好友资料还能找回？

最近发觉很多好友QO被盗．经常听到他们为寻回好友资料而叹息．其实很简单就能做到这点。首先在最后上过该QQ号码的电脑上面按密码丢失前的密码登录（虽只能离线登录，但已经足够了）然后选择菜单中的信息管理器（或者界面下端的喇叭按钮）。     

Electrochemical kinetics of gold dissolving in alkaline thiourea solution

1 INTRODUCTIONEssentially , determination of electrode reac-tion mechanism is just the determination of thecourse of electrode reaction and the rate-determi-ning step[1 5]. Based on the previous results[6 11],gold dissolution mechanism undergoes the follow-ing courses in alkaline thiourea solution: adsorp-tion of thiourea on active points of electrode sur-face and formation of Au[SC(NH2)2]ads; chargetransfer fromactive gold atomto thiourea moleculeand formation of Au[SC(NH2)2]a+ds; Au-…     

浅谈电站辅机产品的防腐涂装

本文阐述了产品涂层防腐蚀质量与产品涂装前的表面处理,正确的涂料选用和合理的涂层膜厚,以及涤装施工诸多相关因素。