环境友好 服务首都——创建国家环境友好企业纪实

2005年10月20日,经过国家环境保护总局的验收和公示,中电国华电力股份有限公司北京热电分公司,被正式授予“国家环境友好企业”称号,这是全国电力系统第一家获得此项荣誉的企业。     

温度作用对运行期间混凝土坝的影响

本文通过工程实例介绍温度在混凝土坝运行期间的各种影响和作用,它能使坝体产生裂缝,使施工期出现的裂缝扩展;还能使混凝土表面产生冻融破损,使混凝土深层产生冻胀破坏。这不仅影响大坝的使用寿命,而且威胁大坝的安全。若对大坝运行期间的温度加以控制(如对大坝廊道和孔洞进行封堵、溢流坝反弧段积水等),则可减小温度变化幅度,从而改善坝体应力状态和减少冻融、冻胀的程度及范围。     

Constructing meaning in the service of power: An analysis of the typical modes of ideology in accounting textbooks

This paper provides an analysis of the typical modes of ideology in introductory financial accounting textbooks and training materials. Drawing on Thompson's [Thompson JB. Ideology and modern culture: critical social theory in the era of mass communication. Cambridge: Polity Press; 1990] schema concerning the typical linguistic modes through which ideology operates, this research suggests that the operation of ideology is apparent within educational accounting texts, with particular strategies being more evident than others: in particular, the strategies of universalization, narrativization, rationalization and naturalization. Given the predominantly technical nature of introductory financial accounting textbooks and training manuals, the modes of ideology identified in the texts were often quite subtle; more specifically, the ideological characteristics displayed in each of the six texts analyzed were often expressions of implicit or taken for granted assumptions.     

MATHEMATICAL SIMULATION OF NAVIGATION CHANNEL CHANGES IN THE FLUCTUATING BACKWATER REGION OF THE THREE GORGES RESERVOIR

In this paper,an one- and two-dimensional connected mathematical model is de-veloped.The two-dimensional characteristics of flow and sediment transport are considered asmuch as possible in the model.The model is calibrated with field data and applied to simulate theriver process of the fluctuating backwater region of the Three Gorges Reservoir.Some conclu-sions have been made based on the simulation results.     

运用非理想特性对SC网络影响的计算机模拟

本文针对小信号情况下运放有限增益和有限带宽对开关电容网络的影响,提出了利用离散域运放宏模型分析此问题的方法.文中对一些实际应用的开关电容网络(SCN)进行了计算机模拟,结果表明运放有限增益和有限带宽对SCN输出特性会产生显著影响.     

对我省农村低压电网漏电保护方式的探讨

在分析目前低压电各类漏电保护器特性的基础上,对我省农村低压电网漏电保护的保护方式及设备选型进行了探讨并提出了相关建议.     

3-D NUMERICAL STUDY OF LAMINAR AND TURBULENT FLOW INSIDE A 90-DEG-BEND SQUARE AND FLAT DUCT

With the application of body-fitted coordinate method and the standard k-epsilonequations,the rtumericat sotution to the averaged N-S equations is obtained.Laminar and turbu-tent flows inside a 90-Deg-Bent duct are studied,yielding good results.     

近年我国沥青市场发展回顾及中长期展望

2001-2010年,我国沥青表观消费量年均增速为13.1％,经济的持续稳定增长为沥青市场提供基本支撑,道路交通的快速发展是沥青需求增长的主要驱动力.三大石油公司是主要的沥青供应商,其所占的市场份额不断增长,市场集中度不断提高.尽管我国沥青进口数量在不断增加,但对进口沥青的依赖程度开始降低.我国沥青路面比例偏低,“十二五”、“十三五”是我国道路交通的大发展时期,沥青消费也将保持增长态势.预计2015年我国沥青消费量将达到2500万吨;“十三五”期间将达到并保持在2500万～3000万吨/年的水平.     

引子渡水电站施工期环保工作的实施

根据引子渡水电站工程施工对环境的影响预测评价,采取相应的环境保护措施,减少和防治建设项目实施后对环境造成不良影响,促进经济、社会和环境的协调发展。     

抓好质量管理争创精品工程

本文介绍了浙江桐柏工程建设过程中的质量管理情况。桐柏工程质量管理引入了ISO9002质量管理体系,强化工程质量管理意识,从施工的各个环节着手,严格把关,利用先进技术和先进设备,科学地控制质量。