广西500kV电网的发展

本文主要介绍广西５００ｋＶ电网今后的发展情况，其中包括来宾～玉林、南宁～平果以及龙滩～柳州～桂林等５００ｋＶ输变电工程的建设；并对来宾火电厂Ｂ厂接入系统、桂西水电开发接入系统及来宾５００ｋＶ变电所扩建等问题提出探讨性意见，以供研究。     

以礼河电厂冲击式机组流量效率在线监测的可行性研究

流量效率等运行参数的在线监测，是水电厂实现经济运行，提高发电效益的基础，也是现代水电厂告别旧的运行管理方式的重要标志之一．以礼河４级作为一个已投运多年且机组又属冲击型的电站，实现流量效率的在线监测前景如何？本文论证了其可行性，并提出了实现方案．     

长江流域水能资源开发的新举措：从三峡建设到金沙江开发

中国水资源十分丰富，但目前仅开发13％～14％。国家已明确了梯级滚动开发的方针。进一步开发长江流域，以此作为中国东、中、西部相互促进、协调发展的一个重要措施。同时明确中国三峡总公司为金沙江浪洛渡和向家坝两水电站的业主单位。长江上游金沙江段是可开发水能资源最集中的地区，总装机容量接近5000万kw，是“西电东送”北、中、南三条线中，中线的主要基地。争取在“十五”计划期间，溪洛渡和向家坝两电站其中有一个开工建设。     

Macroinvertebrate assemblages of littoral habitats in the Macquarie and Mersey rivers,Tasmania: Implications for the management of regulated rivers

Littoral habitats in large rivers are influenced to varying degrees by changes in discharge. Irrigation abstractions can increase the amount of habitat that would naturally be dewatered during low flow periods and therefore it is important to have some knowledge of the potential impact this may have on riverine macroinvertebrates. The macroinvertebrate assemblages of common littoral habitats in riffles, pools and runs in two reaches each of the Macquarie and Mersey Rivers, northern Tasmania, Australia were compared from samples collected during the low flow and irrigation season, between December 1991 and April 1992. The area under water of these habitats, riffle substrata, macrophyte beds and coarse woody debris, responded differently to changes in discharge. Within a reach, the same taxonomic groups often dominated the total number of macroinvertebrates for all habitats, but there were differences in the proportions contributed by these taxa to the different habitats. In general, taxa characteristic of slow-flowing or lentic habitats, such as ostracods and amphipods, were dominant in macrophyte beds in pools and runs, whereas taxa such as larval elmid beetles and hydropsychid caddisflies were dominant in riffles. A substantial component of the fauna from each habitat within a reach was unique to that habitat, but there was always a similar number of taxa common to all habitats. Classification and ordination grouped samples from both rivers firstly by habitat and secondly by month and reach. Total density and family richness of invertebrates differed by reach, habitat and month in both rivers, except for richness in the Mersey River where habitat was not significant. Differences in densities and numbers of invertebrate families among habitats were not consistent between reaches for each river. This study has highlighted the differences in macroinvertebrate assemblages of several littoral habitats in two lowland rivers in Tasmania. Differences in taxonomic composition, density and richness among habitats within reaches strongly imply the uniqueness of these habitats in terms of the invertebrate faunas that occupy them. We suggest that if maintenance of biotic diversity is an aim of instream flow management, water allocations that address low flows should place a high priority on the maintenance of a diversity of habitats.     

1995年汛期长江流域长期水文气象预报及其验证分析

长江流域汛期长期水文气象预报成果是通过对气候背景的分析，前期天气气候征兆和重要物理因子的分析，最后经专家会商形成的，在预报方案制定过程中，坚持水文与气象，短中长期预报，科学研究与预报应用相结合，从定性上讲，无论时间和空间都基本吻合，对１９９５年长江汛期防洪发挥了重要的耳目作用。     

响洪甸抽水蓄能电站地下厂房设计

响洪甸混合式抽水蓄能电站位于安徽省西部金寨县境内，上库为响洪甸水库，下库建在响洪甸水库大坝下游河道上，引水系统修筑在土库左岸，厂房为地下式布置．地下厂房上覆岩层厚为52～102m，岩性主要为粗面提灰岩和火山角砾岩，大部为Ⅰ～Ⅱ类围岩，个别属Ⅲ类围岩．地下厂房喷锚支护设计喷层厚为15～10cm，锚杆直径φ25，长度4～6m，挂网筋为今12～φ10，网孔尺寸为2cm×2cm，厂房内采用岩壁吊车梁方案，岩壁梁受拉措林采用上下两排φ32，长10m，间隔10m，倾角分别为30°和25°的钢筋锚入岩体，受压构造锚杆一排φ25，长6m，间隔10m。     

论影视旅游及其“资源—产品”转化

影视旅游是一新的旅游研究课题,文章对影视旅游的概念、发展阶段进行了初步探讨,对影视旅游资源的类型进行了总结和分析,同时通过诸多成功案例的分析,演绎和总结出影视旅游"资源--产品"转化的一些经验和启示.     

中小企业信用担保与政府关系的探讨

各国政府都高度重视中小企业融资难问题,纷纷把建立中小企业信用担保作为解决这一难题的重要措施.我国政府也已启动了中小企业信用担保的构建,并发挥了主导作用,然而在实践中还存在着一系列不可回避的问题.只有及时理顺政府和中小企业信用担保的关系,才能在将来更加有效得推动信用担保的健康发展.     

程序性和规范性--知识工作界定准则的探讨

知识工作的生产率问题是21世纪管理的最大挑战,但到目前为止,人们对于知识工作生产率的一个基础问题--知识工作的界定仍然没有一种有效的方法.本文在文献综述和实际案例观察的基础上归纳出知识工作的本质特征,提出知识工作的一种界定准则--工作过程的程序性和规范性,进而阐述这一准则对于解释各种类型工作知识特征的合理性以及对于解决知识工作生产率问题的必要性,最后对于这一准则的实证研究给出了一种思路和方法.     

水体富营养化的影响及其防治技术

简要介绍了水体富营养化的形成、影响，从控制外源性营养物质和减少内源性营养物质负荷两方面来阐述其防治技术。生物操作法是减少内源性营养物质负荷较好的手段，可促进资源的综合利用。