The influence of hydroelectric power generation on the body composition of juvenile Atlantic salmon

The fat and protein content, and thus energy resources of young (parr) Atlantic salmon (Salmo salar) were examined in a temperate river. Juvenile salmon exhibited distinct seasonal patterns of energy storage and use. The lowest levels of energy were found towards the end of winter (mean mass specific energy about 4.3 kJ·g^?1). There was a rapid accumulation of fat in spring/early summer in spite of low‐water temperatures (highest mean content of mass specific energy of about 5.0 kJ·g^?1 in June). By early autumn (August) there was a rapid depletion of fat and energy resources. The decline in specific energy during late summer was of the same magnitude as the corresponding winter decline. Furthermore, total fat and protein content, and thus energy resources of juveniles below a hydroelectric power plant (hydrostation (HS)) differed from those at a (lower) reference station (RS). The younger fish exhibited higher gains, but also larger losses of energy resources compared to corresponding values at the RS. Specifically during the summer, young of year (YOY) had 31% lower total energy content at the regulated site (mean 1.27 kJ per individual) than the RS (mean 1.84 kJ). Higher mortality may occur at the site most affected by the hydroelectric plant, where energy resources on average were higher, but where depletion was also most severe. Copyright © 2006 John Wiley & Sons, Ltd.     

潮州供水枢纽拦河闸计算机监控及运行调度

介绍了潮州供水枢纽工程的概况及拦河闸计算机监控系统的结构和主要功能，着重讨论了闸门的控制过程和自动运行调度，可供其他闸门工程的自动化建设参考。     

加强地勘单位领导班子自身建设初探

文章认为,要建设一个优秀的地勘单位领导班子,应努力做好思想政治及组织建设工作,正确处理民主与集中、集体与个人、局部与全局等方面的关系。     

水泵水轮机的数值模拟及其应用

采用足够小的直线段拟合机组全特性曲线平直部分，采用二次多项式拟合机组全特性曲线弯曲部分，推导了有关方程，并对模拟的方程进行了处理，编制了较通用的计算机程序，利用该计算机程序对我国蒲石河抽水蓄能电站进行了计算分析，计算结果表明：该计算机程序计算速度较快、计算准确度较高，提出的水泵水轮机的数值模拟方法具有实用价值．     

水利水电施工企业项目管理浅析

阐述了水利水电施工企业项目管理的特点,就本施工企业实行项目管理的实践情况作了介绍,对施工企业如何进行规范化项目管理提出了建议。     

微波感应式电力线防盗在线监测系统

研制了一种微波感应式配电线路防盗在线监测系统，简述了其系统构成、技术特点和应用效果。整个系统由监测分机、监控中心、巡检人员组成，借助该系统进行了一系列实验。结果表明，当有大型移动物体靠近或攀登杆塔时，安装在杆塔上10 m左右的微波感应监测分机感应到移动物体信号，一方面进行语音警示，另一方面通过短信服务及时向监控中心发送短信，监控中心及时通知巡检人员，赶到事故现场，以最大限度地保证输电线路的安全。     

小学体育新课标目标统领下单元教学计划的研究

新的全日制义务教育《体育(1至6年级)课程标准,》对体育课提出了运动参与、运动技能、身体健康、心理健康和社会适应等五大领域的教学目标。文章通过实验,在对比中阐述了以新课程标准为教学目标,进行有针对性的教学设计和课堂实施,可使学生各方面的发展更符合新时期的要求的观点,并提出了单元教学计划设计的方法。     

Analytical investigations of transitional operating modes of the second circuit of units at NPP with water-moderated reactors with consideration of control systems

A mathematical model for analysis of process parameters of equipment in the second circuit of nuclear power plants is presented, and the structure of the program and principles used for analysis of the equipment are described. A mathematical model for analysis of the deaerator and steam generator is described in detail. A computational analysis of several transitional modes, which is made possible on the basis of the mathematical model in question, is also presented in this paper, and a comparison is made with test data. __________ Translated from élektricheskie Stantsii, No. 3, March 2007, pp. 16–22.     

电子式互感器在数字化变电站的应用

电子式互感器和合并单元作为数字化变电站的重要组成部分，与传统互感器相比具有绝缘简单、动态范围宽、抗饱和性能强、占地面积小、实现数据输出等优点。文中介绍了有源和无源电子式互感器的构成，对这2种方式进行了比较，介绍了合并单元的功能及其应用，对工程应用提出了互感器配置和功能应用的实施建议。     

火电仿真技术研究

在电力行业中，计算机仿真一直是不可缺少的工具，它在减少损失、节约经费、提高效率、确保安全经济运行等方面发挥了巨大作用。主要介绍了计算机仿真技术在660MW火电站中的具体应用情况。以邯峰发电厂^#1机为对象，采用STAR-90仿真支撑系统，建立起660MW火电机组1：1仿真机，并在机组投产前建成，取得了良好的培训效果。论述了火电站仿真机未来的发展趋势，包括开发高精度机理性仿真数学模型以及真实的DCS仿真模型、进行性能计算与故障诊断、应用于热工人员培训及机组调试等。