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1.
文章从微型水轮机的选型所必需的资料、原则及计算等几个方面简述了微型水轮机的设计。  相似文献   

2.
《企业技术开发》2015,(21):11-12
本设计针对苗圃水电站参数,对冲击式水轮机与高水头混流式水轮机进行了比较,并对各种可选方案进行了水轮机的选型分析,计算出了最终选定的冲击式水轮机的基本工作参数。  相似文献   

3.
本设计针对苗圃水电站参数,对冲击式水轮机与高水头混流式水轮机进行了比较,并对各种可选方案进行了水轮机的选型分析,计算出了最终选定的冲击式水轮机的基本工作参数。  相似文献   

4.
文章从微型水轮机的选型所必需的资料、原则及计算等几个方面简述了微型水轮机的设计。  相似文献   

5.
中小型水电站低压水轮机运行优化的探讨   总被引:1,自引:0,他引:1  
为了研究影响中小型水电站水轮机优化选型的主要因素,改善小型水电站的运行条件根据中小型水电站的特点,结合我市实际,来谈谈水电站低压机组的设备改造及运行优化情况.  相似文献   

6.
《价值工程》2018,(11):141-144
设计了一种可用于移动设备和工具的小型液压动力单元,叙述了系统原理和元部件设计选型方法。可为此类设备的设计和选用提供参考。  相似文献   

7.
《价值工程》2018,(2):104-105
水电工程具有防洪、灌溉、蓄水、发电等功能,是关系国计民生的基础设施。本文结合某的水电工程,根据水电站机组的特点,对两种机组选型方案进行分析,对水轮机组进行选型。  相似文献   

8.
引水径流式水电站水轮机磨蚀及治理   总被引:1,自引:0,他引:1  
张维聚 《价值工程》2011,30(32):41-41
本文根据新疆已建的引水径流式水电站的运行情况,分析了水轮机磨蚀破坏原因,从水工的布置型式和水机选型及材料防护等方面提出了解决办法和治理措施。  相似文献   

9.
标准制修订     
《上海标准化》2008,(12):46-48
基于GHS的化学品标签规范;腧穴定位图;起重机设计规范;起重机设计规范;小型水轮机现场验收试验规程  相似文献   

10.
随着时代发展,在现代社会中,人们的用电需求量逐渐增大。因此为了满足人们在生活生产中与日俱增的用电需求,对水轮机进行科学合理的设计能够从源头上缓解电能供需矛盾。在现代的水电站中,贯流式水轮机是一种比较常用的水轮机,因此,如果能够科学合理的设计,便能够有效的提高贯流式水轮机的性能。在进行贯流式水轮机设计时,应该从"方便安装、运行和检修"方面出发,从而保证贯流式水轮机的性能优异,操作简单和检修方便。本文通过对贯流式水轮机的深入研究,并对贯流式水轮机的设计问题提出了个人看法,希望能够抛砖引玉,是同行相互探讨共同提高,进而为我国电力事业发展添砖加瓦。  相似文献   

11.
Several US counties and local governments have recently considered a novel solution to the foreclosure crisis. They plan to use eminent domain to compel the owners of mortgage debt—and specifically of private‐label mortgage‐backed securities—to sell the debt to the government at a price reflecting the loan's market value. The government would then restructure the debt and resell it to new investors. The plans are striking because—in contrast to both development‐driven eminent domain and the federal subprime bank bailout—they would force investors to assume asset devaluation and increased long‐term risk. Notably, the plans have emerged as an instance of financialization‐focused politics in suburbs and suburban cities of color, specifically majority‐black and ‐Latino/a suburbs. Local support for the plans, we argue, is rooted in the long‐term disinvestment of these ‘suburbs of exception', which became targets of subprime lending and eventually sites where the ‘financial exception' has been localized. But these demographic shifts, fragmentation and fiscal pressures have at the same time created a suburban political terrain in which the plans have gained their strongest political support.  相似文献   

12.
Serendipity – the notion of making surprising and valuable discoveries – plays a major role in the success of individuals and organizations alike. Previous research has established the importance of serendipity and identified important individual- and organizational-level antecedents. However, the literature has been dispersed and the boundaries of the concept have been blurry, leading to a lack of conceptual clarity and structure, and thus limiting validity and managerial actionability. Based on a systematic literature review, I synthesize existing management-related research on serendipity and explicate the emergence and composition of serendipity in the organizational context. I first identify three necessary conditions that differentiate serendipity from related concepts such as luck or targeted innovation: agency, surprise, and value. Then, I draw from the literature on sensemaking, event-based theorizing, and quantum-based approaches to management to conceptualize the process of cultivating serendipity in the organizational context as a process of enabling potentiality and materialization, and develop a multi-level theory of (cultivating) serendipity. This conceptualization contributes to our collective understanding of how, why, and when (i.e., under what conditions) organizations can leverage the value in the unexpected, which opens up fruitful avenues for further research.  相似文献   

13.
NGOs in Bangladesh have been recognized as effective change agents in the socio-economic arena throughout the world. Their contributions in micro credit, non-formal education and primary health care are widely known. NGOs play a significant role in society. NGO accountability, as a result, has become a critical issue. NGO accountability in Bangladesh has been examined here in relation to patrons, clients and themselves. Of the three relationships only accountability to patrons is in a near satisfactory state. Accountability to clients is handicapped by lack of opportunities of beneficiaries to participate meaningfully in NGO policy making. Accountability to themselves is adversely affected due to the adherence to a strictly hierarchical system and the influence of founding and charismatic NGO leaders.  相似文献   

14.
There has been much discussion regarding the possible decline and weakening of national systems of human resource management (HRM). Yet, culture and institutions are often cited as the major stumbling blocks to this outcome. Such constraints may dissipate in the analysis, particularly if ‘regional clusters’ are considered where geographic and cultural closeness and ‘openness’ to similar economic pressures exist. In such cases, it might be postulated that convergence in HRM will occur. We argue that China, Japan and South Korea represent such a cluster. This article examines these countries, to see if a degree of convergence is taking place and if it is towards an identifiable ‘Asian’ model of HRM. A model of change is presented that distinguishes between levels of occurrence and acceptance. Details of the development and practice of HRM in each country are then set out. The article ends with a discussion and implications section and a brief conclusion.  相似文献   

15.
A new Office for National Statistics was created in the United Kingdom in 1996 following a series of developments designed to strengthen the relevance and integrity of statistics. This paper describes these fundamental changes and sets out a blueprint for future progress. It also sets current developments in the United Kingdom in an historical and international context.  相似文献   

16.
We have considerable understanding of the obstacles that women engineers encounter and the reasons that they leave the field, but we know less about what enables them to remain. Adopting an interpretivist approach, this article examines how a group of British women engineers in two FTSE 100 companies account for “staying on” in their male‐dominated work settings. We delineate four specific forms of help that facilitate women's retention in the field. We argue that exposure to help leads to women developing a habitus that enables them to continue working in engineering. To conclude, we draw on our findings to outline HR practices that will facilitate supportive relationships in the workplace and pave the way towards developing more positive organisational climates.  相似文献   

17.
杨明 《价值工程》2012,31(7):16-17
物流业经过诸多年的发展目前已经成为最热门的行业之一,物流企业的注册数量也与日俱增,达到前所未有的规模。毋庸置疑,任何企业都希望自己迅速做强做大,并成为真正现代物流企业的典型代表,要实现这一目标一个首要问题就是要解决现代物流企业的发展观问题。  相似文献   

18.
丛广英  乔炜君 《价值工程》2010,29(6):245-245
大体积混凝土的裂缝问题是实际工程中长期困扰工程技术人员的问题,其控制技术的研究是混凝土结构研究的热点问题,具有重大的学术价值和潜伏的工程背景。  相似文献   

19.
This paper focuses on the fashion industry, one characterised by issues such as dramatic shifts in the scale and power of major retail buyers in the market, the advent of retailer own brands, and the nature of sourcing and supply chain decisions, issues that are increasingly global in nature. The aim of this research is to explore the nature of relationships between UK high street multiple fashion retailers and their contracted suppliers, many of whom are entrepreneurial firms by most definitions of the term. Four core themes emerge from the literature and provide a framework for the research, namely, power, process, partnership, and people. The research approach was qualitative, and conducted over a period of twelve months. The paper ends with an agenda for future research.  相似文献   

20.
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