三峡地下电站变顶高尾水洞水动力特性

在国内首次应用模型水轮发电机组对三峡地下电站变顶高尾水洞方案进行水力过渡过程试验研究。对水轮机导叶实行分段关闭 ,并求出了二段关闭的最佳拐点 ,试验证实了二段关闭对减小尾水管进口的负压和机组转速上升有明显的作用。通过有关水力参数的测试 ,认为变顶高尾水洞可以满足各项技术要求 ,是一个减少山体开挖、节省投资的新型设计方案。在地下电站中具有广泛的应用前景     

基于博弈论的商业银行内部监督问题研究

近年来，国有商业银行连续发生了一些重大案件。这些案件多发生在国有商业银行的基层分支机构．案件的当事人多是基层银行所处管理层级别较高的管理者，而且有些案件发生的隐患长期得不到发现和消除。本文从博弈论和信息经济学的角度，分析了为什么随着银行员工所处管理层级的提高银行员工的偷懒行为或道德风险行为越来越难发现，并建议使用基层商业银行内部监督的两个工具，加强商业银行内部监督。     

地下水污染试验研究进展

本文在总结国内外众多学者有关污染物在含水层中的运移规律研究成果的基础上，介绍了地下水污染试验研究的最新进展；并据此认为，三维弥散，各向异性含水层介质中污染物的迁移，非饱和土层中的污染物多相迁移和吸力的关系等将成为今后地下水污染传播研究的主要问题。     

Flocculation morphology: effect of particulate shape and coagulant species on flocculation.

Flocculation morphology is a new concept that investigates the morphological characteristics of colloidal particles and coagulants in water during the flocculation process, and the influence that these characteristics have on flocculation process efficiency. This paper is a summary of advances in research on this topic over several years. Morphological characteristics of colloids in natural waters and different kinds of hydrolysed coagulants are investigated, and their effect on colloid stability, flocculation kinetics and efficiency is analysed. It is confirmed that the traditional theory has some deviations in coagulation of nonspherical particles, and these deviations are revised by the flocculation morphology model. Flocculation morphology can not only promote research about flocculation theory, but also instruct the production, application and flocculation control. It can be foreseen that more progress will be made in research and application of flocculation morphology in the near future.     

浅析清水河的水电开发模式

随着国家对多家办电、混合式经济模式的鼓励和政策优惠,中小水电开发已掀起一股热潮,究其开发模式主要有国有全资、民营独资、股份制等几种。本文主要结合贵州乌江清水河水电开发有限公司对清水河中型水电开发的实际,探究股份制混合经济的投资控制及管理模式。     

影响住宅建筑生活给水设计秒流量计算因素的探讨

依据《建筑给水排水设计规范》(GB50015—2003)中相关条款,编制不同设计参数条件下的住宅建筑设计秒流量计算方案,并通过对计算数据的统计分析,总结了影响设计秒流量公式计算结果的主要因素及公式特征。最后探讨了规范公式适用条件存在的问题。     

感受志愿者的微笑

奥帆赛期间,回青岛休假的我住在奥帆基地附近,近距离地感受到了青岛市民迎接奥帆赛的热情.     

Connecting the second exhaust-heat boiler to the operating first one under the conditions of flow circuits of combined-cycle plants with two gas-turbine units and one steam turbine

Problems arising with connecting the second exhaust-heat boiler to the first exhaust-heat boiler under load in the case of flow circuits of combined-cycle plants of type PGU-450 are considered. Similar problems exist for two-boiler single-turbine units of type PGU-325 and for two-boiler single-turbine units of traditional steampower plants with an output of 200–300 MW upon connection of the second furnace of a two-furnace boiler to the operating first furnace. Analysis of the temperature-induced stressed state and of the cyclic strength of thick-walled elements of the steam-water conduit of PGU-450 and of two-furnace boilers of two-boiler single-turbine units with an output of 200–300 MW (the check valve, the inlet header of the water economizer) is used for determining the steam temperature differences in the high-pressure conduits to the steam turbine and the order of connection of the second exhaust-heat boiler to the operating fist one. Modes of enabling a two-boiler single-turbine unit of a combined-cycle plant, which are most “rigid” from the standpoint of thermal strength, are determined. __________ Translated from élektricheskie Stantsii, No. 2, February 2006, pp. 11–17.     

贯彻“三个代表”思想 搞好行业协会建设

贯彻“三个代表”的重要思想，电力行业协会想问题、办事情要以是否符合电力行业先进生产力的发展要求为根本标准。江泽民同志提出的“三个代表”，其中第一条是中国共产党必须始终代表中国先进生产力的发展要求。这条包括两层意思：即中国共产党所创立的理论、方针政策、工作制度和工作体系，以及党组织开展的一切活动必须促进中国先进的生产力的发展；中国共产党领导下的一切社会团体必须适应中国生产力发展的需要，必须促进社会生产力向先进生产力转化和发展。我国已经和将要建立的行业协会等市场中介组织，是我国社会主义市场经济体制的…