河豚毒素的HPLC方法检测

采用高效液相色谱法测定河豚毒素的含量。样品在稀醋酸中溶解,在8mM庚烷磺酸钠-三氟乙酸(体积比为1000:0.005)流动体系下进行河豚毒素的定性和定量分析。结果表明,河豚毒素在5～750μg/mL范围内有良好的线性关系,R=1.0,平均回收率为99.37%;最低检出限为3ng,最低定量限为5ng。     

河豚毒素的HPLC方法检测

采用高效液相色谱法测定河豚毒素的含量。样品在稀醋酸中溶解,在8mM庚烷磺酸钠-三氟乙酸（体积比为1000：0.005）流动体系下进行河豚毒素的定性和定量分析。结果表明,河豚毒素在5～750μg/mL范围内有良好的线性关系,R=1.0,平均回收率为99.37%;最低检出限为3ng,最低定量限为5ng。     

辣椒及其制品中苏丹红Ⅰ号的HPLC-MS/MS检测方法研究

以辣椒及其制品为研究对象,建立HPLC-MS/MS快速测定苏丹红Ⅰ号的测定方法。样品经乙腈溶液提取、稀释定容后,以咖啡因为内标,采用HPLC-MS/MS法进行测定,并对检测条件进行了系统的研究和优化。该分析方法的线性范围为5-1000ng/mL,最低检测限为0.02ng/mL,多次测定的RSD在6.8%以内,回收率在93.2%-113.4%之间,具有良好的准确性和重现性,操作简单,满足食品中苏丹红Ⅰ号的检测需要。     

质量事件

卫生部:禁止销售食用织纹螺由于浙江等地近日发生多起因食用织纹螺引起的中毒事件,卫生部20日发布通知,要求禁止销售和食用织纹螺。消费者若发现食品生产经营单位采购、加工和销售织纹螺的,应当及时向当地食品安全监管部门举报。引起织纹螺中毒的主要原因是其含有的河豚毒素,食用后可产生头晕、呕吐、口唇及手指麻木等中毒症状,潜伏期最短为5分钟,最长为4个小时。对食用织纹螺引起的中毒,目前尚无特效治疗解毒药物。     

河豚鱼毒素定性定量分析检测

大连某公司养殖东方红鳍豚,该产品以前销往日本、韩国。因最近几年国外市场价格偏低,其公司决定开发国内市场。因河豚毒素是剧毒危险品,国家卫生部对野生河豚鱼产品严令禁止销售,但江苏和辽宁等地人工养殖的河豚为无毒品种,为保证人身安全,该公司委托我所对其河豚鱼制成品的河豚鱼     

电感耦合等离子体质谱法测定土壤、水系样品中的金

试样在650℃烧制、50％王水溶解、泡塑振荡吸附、硫脲解脱,用电感耦合等离子体质谱法测定土壤、水系样品中痕量金的含量。大大缩短了分析时间。方法经国家一级标准物质分析验证,结果与标准值相符。方法精密度小于5％。方法检出限为0．099ng／g,线性范围宽,适用于土壤、水系样品中0．1ng／g以上金的测定。     

北京市城镇廉租房政策实施过程中有关问题研究

一、北京市城镇廉租房政策实施情况分析 1．廉租家庭认定和所需资金测算 按政策要求只对最低收入的住房困难家庭提供住房帮助，因此，首先必须确定最低收入及住房困难的标准。北京市明确以民政部门认定的家庭最低生活保障线为最低收入线，将人均居住面积低于5平方米，相当于住房使用面积低于7．5平方米的最低收入和优抚家庭纳入廉租范围。     

经济消息

为认真贯彻落实中晚稻最低收购价政策,切实保护种粮农民利益,经国家有关部门研究决定,自2005年11月8日起,在湖南省正式启动中晚稻最低收购价执行预案,由指定收购库点按最低收购价挂牌收购,以稳定稻谷市场价格。国家粮食局于10月26日就此向中储粮总公司和湖南省粮食局发出了启动预案的紧急通知。至此,《2005年中晚稻最低收购价执行预案》已先后在湖北、安徽、四川、江西、湖南5省正式启动。     

石墨炉原子吸收光谱法测定茶叶中的铅

采用干法灰化-盐酸溶解灰分，通过氘灯扣除背景，用石墨炉原子吸收光谱法测定茶叶中的铅，铅标准在0—80ng／mL呈现良好的线性关系，相关系数=0．99975。以3SA／S计，铅检出限：1．05ng／mL；方法精密度RSD〈5％，加标回收率83％-102％。     

韩国汽车发展启示录

在韩国,一辆起亚福瑞特的最低售价只相当于人民币5.5万元,新款现代伊兰特的最低价约合人民币8.4万元,起亚K5最低约合人民币11.1万元,远低于中国市场的售价,而其它中高级汽车的价格仅相当于中国市场的一半甚至更少。     

Development in Information and Communications Technology (ICT) Statistics at the Australian Bureau of Statistics

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.     

Value at Risk in the Suburbs: Eminent Domain and the Geographical Politics of the US Foreclosure Crisis

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.     

Towards a Theory of Serendipity: A Systematic Review and Conceptualization

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.     

Accountability of NGOs in Bangladesh A critical overview

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.     

Towards an Asian model of human resource management? A comparative analysis of China,Japan and South Korea

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.     

The Creation of the Office for National Statistics

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.     

What helps? Women engineers' accounts of staying on

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.     

论现代物流企业的发展观

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。     

浅谈大体积混凝土裂缝的控制

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。     

Supply Chain Strategies in the UK Fashion Industry—The Rhetoric of Partnership and Realities of Power

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.