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1.
文章根据锌、铟性质类似的原理,探索了不同原料铟的浸出工艺,提出了铟提取过程中存在的问题,就如何进一步提高富集铟渣品位和铟的回收率进行分析研究。  相似文献   

2.
黄祖飞 《企业导报》2012,(12):270-271
本文介绍采用残液中和沉铟-硫酸低酸浸出铟-铁粉还原除杂-P204萃取回收铟工艺,以及试验原理、试验过程和结果。  相似文献   

3.
金属铟作为稀散金属之一,具有优良的化学和物理性能,广泛应用于多种领域,而我国铟几乎全部以初级产品的形式出口,没有发挥资源优势,开发多元化、系列化的铟产品(特别是高档铟),提高其在国际上的竞争力具有重要意义。  相似文献   

4.
《价值工程》2017,(4):217-220
金属铟由于其独特的物理化学性质而在一些重要领域得到了广泛的应用。近年来,随着铟的市场需求量逐步升高,铟的回收与富集方法发展迅速。本文系统的介绍了部分现有的各种原生铟和再生铟的提取与富集方法。通过对比各种方法之间的优缺点,指出了未来铟资源回收的发展方向。  相似文献   

5.
《价值工程》2017,(23):51-54
铟是一种重要的稀贵金属,广泛应用于高新技术产业,随着科学技术的发展,铟的需求量开始增大,故铟的提取和应用对于国家经济战略变得尤为重要。故介绍了铟在工业上三种主要的提取方法:浸出法、电解法、浮选法。结合国内外的参考文献,对三种方法的研究和应用情况进行了综述。并提出和总结三种方法的优势和不足之处,对未来的铟资源回收技术进行展望。  相似文献   

6.
铟冶炼萃取采用离心萃取机对含铟上清液利用两相澄清实现铁、铟分离。经过一次萃取后的萃余液还含有部分铟金属。通过试验表明,利用离心萃取机设备对萃取作业点的萃余液进行二次萃取回收铟试验,收集基础数据,试论证用P204对萃余液进行二次萃取回收铟的工艺可行性。试验表明,用P204对萃余液进行二次萃取能提高铟金属回收率,具备其工艺可行性。  相似文献   

7.
<正>砷化铟晶体管的中心是酞菁染料分子,其周围环绕着12个带正电的铟原子。在一个砷化铟晶体上,12个带正电的铟原子环绕着一个酞菁染料分子,这就是科学家最新研制的分子大小的晶体管。按照摩尔定律的硬限制,这很可能是一个晶体管所能达到的最小尺寸。新型晶体管是由德国PDI固体电子学研究所、柏林自由大学、日本NTT基础研究实验室和美国海军  相似文献   

8.
铟是一种具有独特性质的稀缺金属,同时也是一种用途广泛的金属.文章介绍国内铟工业的现状与发展情况,并提出加快发展铟产品产业规划及配套措施、对策.  相似文献   

9.
文章研究了以申基异丁基甲酮(以下简称MIBK)萃取铟、铊的碘化物.石墨炉原子吸收法连续测定地质样品中的铟、铊含量的方法,方法检出限低,操作简单快速,能避免共存离子的干扰,提高地质样品中铟、铊的测定灵敏度.  相似文献   

10.
ITO靶材废料的高效回收利用对全球铟资源循环与环境保护具有重要意义。本文概述了ITO靶材废料回收铟的现有技术,分析其优缺点,并提出适用于产业化应用的高效绿色回收铟技术。  相似文献   

11.
This paper outlines the ICT statistical developments that the ABS has undertaken over recent years. These developments have been on both the supply side (ICT industry) and the demand side (use of IT by sector). The content of ABS ICT surveys has changed significantly over the last few years and are expected to develop further in line with industry changes and emerging policy needs.
Recent developments in household collections have been the inclusion of IT use questions in the 2001 Census of Population and Housing and in various ABS social surveys such as Children's Participation in Culture and Leisure Activities. Annual business IT use surveys are now conducted and include topics such as Internet commerce and IT security. Biennial ICT industry surveys are conducted to provide data on ICT production, imports and exports, ICT industry employment, performance and structure information. An Internet activity survey is run every six months and provides regional Internet access details and infrastructure details on Internet service providers.
A major development for 2002–03 will be the compilation of an ICT satellite account. ABS intends to produce an ICT Information Development Plan to guide its future statistical development work in the ICT field.  相似文献   

12.
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   

13.
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   

14.
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   

15.
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   

16.
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   

17.
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   

18.
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   

19.
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   

20.
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   

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