食品中的微量元素与人体健康

现代科学研究发现,在不同的食品中,含有不同的微量元素。这些微量元素虽然在食品中的含量很少,但对维持人体健康却至关紧要。如果人体缺少了某种微量元素,就会对人体某些器官产生损害,引起这样或那样的病患。因此,多吃一些含微量元素丰富的食品,可满足人体对微量元素的需要,减少或避免     

部分茶叶产品农药残留仍超标

中国是世界产茶大国,又是茶叶主要消费国。为保障广大消费者的合法权益,促进茶叶行业的健康发展,国家质检总局日前对茶叶产品质量进行了国家监督抽查。本次重点抽查了茶叶农药残留、重金属含量等涉及人体健康安全的卫生指标项目。抽查结果表明:我国茶叶产品总体质量是好的,尤其是一些老字号和知名品牌企业,产品质量比较稳定;而一些小型私营企业(含个体)的产品质量存     

我国茶叶质量状况面面观

茶叶以其富含茶多酚、咖啡碱、氨基酸、维生素等多种有益人体健康的微量元素而为世人所喜爱。我国茶叶年总产量约70万吨，约占世界的1／4，其中绿茶约占54％，花茶约占20％，红茶约占6％，乌龙茶约占10％，其他茶叶约占10％。     

年薪百万的酷职业：我在加拿大当“品水师”

世界卫生组织最新研究表明，真正对人体最健康的饮品不是茶叶，牛奶，而是矿泉水。它中性PH值，微量元素的慢渗入状态，让它能成为最能补充水分和微量元素的饮品。而在不少欧洲国家，矿泉水不仅在高档晚宴上代替了过去的酒和咖啡，更成了好友兼时尚的馈赠礼品。当喝水成了一种新时尚，一种新的职业也应运而生，那就是品水师。     

“标准化知识讲座”系列之 国家强制性标准关于食品中人体所需矿物质含量的规定

人体所需的矿物质,也称为无机盐。分为两类:一类是体内含量在0.01%以上、每天需要补充100m g以上的,称为常用元素,有钙、磷、硫、钾、钠、氯、镁等7类;另一类人体需求量很少,称为微量元素,有铁、锌、铜、碘、锰、钼、钴、硒、铬、镍、锡、硅、氟、钒等14类。其中,镍、锡、硅、氟、钒是1970年后才认为是必须的。最近,有人提出砷、铷、溴、锂也可能是必须的微量元素。由于人体所需矿物质在人体内不能形成,只能通过膳食进行体外补充,而天然食品中人体所需矿物质含量又不能完全满足人体需要,某些矿物质甚至缺少,因此人们想办法,通过在食品中添加…     

微量元素硒对水稻影响的研究进展

微量元素硒具有多种生物学功能,对动、植物生长发育及人体健康具有重要意义。综述了微量元素硒对水稻的生长发育、产量、品质的影响,水稻富硒能力,硒与其他元素的相互作用,富硒水稻的选育,水稻籽粒硒含量基因的遗传及QTL定位等方面的研究进展,旨在对富硒水稻品种的选育提供理论参考。     

硒与健康

化学元素是动植物赖以生存的物质，它参与生物体的正常代谢。在人体中尽管它们含量极小，但对维持人体中的新陈代谢却是十分必要的。硒（Se）作为机体的必需的微量元素之一，其生理作用和在缺乏与过剩时对机体的影响越来越受到人们的重视     

茶叶中存在的主要问题是滴滴涕含量超标

滴滴涕是一种农药，难分解、易积累，人体吸收后对肝、紧等脏器健康不利。因此，GB 9679-1998《茶叶卫生标准》中规定茶叶中滴滴涕含量不得超过0.2mg/kg。本次抽查中北京市熙福融食品有限责任公司加工的炭焙铁观音（100克/盒，生产日期为2003年12月18日）滴滴涕检测值为0.38mg/kg，超过标准限量值，被判定为不合格产品。     

人体微量元素分析仪的校准方法研究

微量元素是人体内的重要的物质，它与人的健康程度密不可分。人体微量元素分析仪是检测微量元素的重要计量器具，他被广泛应用于妇幼保健所、儿童医院、综合医院等。目前我国尚无人体微量元素分析仪的计量技术检定规程或校准规范，针对此种情况，本文提出了一种人体微量元素分析仪的校准方法。     

请喝一杯富硒茶

硒,是人体所必需的微量元素之一。饮用含硒茶,是身体补充硒的好方法。过去,含硒茶叶是“踏破铁鞋无觅处”,而如今却是“得来全不费功夫”——因为有了贵州六枝天然富硒茶。 六枝天然富硒茶产于古夜郎之地,牂牁江名胜风景区。这里冬     

Incumplimiento del salario mínimo en Europa central y oriental

En este estudio se analiza el incumplimiento del salario mínimo durante el periodo 2003–2012 en diez países de Europa central y oriental con salario mínimo obligatorio nacional. A partir de los datos de EU‐SILC y la metodología propuesta por Bhorat, Kanbur y Mayet (2013), se cuantifica la incidencia y magnitud del incumplimiento. Se realizan análisis de regresión sobre determinantes individuales, laborales y macroeconómicos. Aunque la incidencia permanece relativamente baja, los trabajadores a los que se dirigen las políticas de salario mínimo parecen los más expuestos a su incumplimiento. Con el tiempo, una mayor incidencia se asocia a una razón más alta entre salario mínimo y salario medio.     

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.     

Cultural Economy Planning in Creative Cities: Discourse and Practice

While a growing body of research analyses the functional mechanisms of the cultural or creative economy, there has been little attention devoted to understanding how local governments translate this work into policy. Moreover, research in this vein focuses predominately on Richard Florida's creative class thesis rather than considering the wider body of work that may influence policy. This article seeks to develop a deeper understanding of how municipalities conceptualize and plan for the cultural economy through the lens of two cities held up as model ‘creative cities’ — Austin, Texas and Toronto, Ontario. The work pays particular attention to how the cities adopt and adapt leading theories, strategies and discourses of the cultural economy. While policy documents indicate that the cities embrace the creative city model, in practice agencies tend to adapt conventional economic development strategies for cultural economy activity and appropriate the language of the creative city for multiple purposes.     

Input/output ranges and performance: an examination of US machine tool producers

Despite the establishment of high-tech multinational enterprises (MNEs) in Ireland since the late 1950s, the country did not succeed in closing the technological gap with most of its EU counterparts. The weak National System of Innovation (NSI), and in particular low business and government R&D levels, combined with a lack of research and technology linkages between MNEs and indigenous firms, explain these poor results. However, the Shannon region in the West of the country presents some specific institutional characteristics that could theoretically make the region a strong technological enclave. The various actors in the region - i.e. the administrative, financial, political and research institutions, as well as the business organizations - have indeed infused a new type of economic development. After a brief review of the available concepts and models articulated around these actors and their interrelationships, the paper analyses whether the Shannon region, taken as an illustrative example, mirrors a specific economic and technological localized setting. The study is based on a survey of indigenous and foreign firms.     

Sixty years of discrimination and diversity research in human resource management: A review with suggestions for future research directions

This article reviews discrimination and diversity research published in Human Resource Management (HRM) over the past 60 years. While discrimination and diversity are very different constructs, it is often informative to study them together, because when people recognize each other's diversity, this can result in bias, stereotyping, and discrimination. We conducted bibliographic searches for terms related to discrimination and diversity as well as a manual search through every title and abstract published in HRM over the last 60 years to assess article relevance. The search resulted in 135 research articles with 136 unique studies (i.e., samples) which are reviewed in this article. Sex and race are the demographics that have been examined the most in HRM, while religion has been examined the least. Moreover, the number of studies examining lesbian, gay, bisexual, transgender, and queer (LGBTQ) employees in the workplace in HRM has grown quickly within the past 10 years, culminating in a recent meta‐analysis. Our review looks at some of the earliest research published, the most recent research published, and the overall trends we identified in the research over the years for both discrimination and diversity articles. We then make future research suggestions and recommendations to advance the study of discrimination and diversity in the coming years.     

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 Early History of the Cumulants and the Gram-Charlier Series

The early history of the Gram-Charlier series is discussed from three points of view: (1) a generalization of Laplace's central limit theorem, (2) a least squares approximation to a continuous function by means of Chebyshev-Hermite polynomials, (3) a generalization of Gauss's normal distribution to a system of skew distributions. Thiele defined the cumulants in terms of the moments, first by a recursion formula and later by an expansion of the logarithm of the moment generating function. He devised a differential operator which adjusts any cumulant to a desired value. His little known 1899 paper in Danish on the properties of the cumulants is translated into English in the Appendix.     

Capturing the Implications of Services Trade Liberalization

This paper evaluates the impact of service sector trade liberalization on the world economy by a ten-region, eleven-sector CGE model with import embodied technology transfer from developed countries to developing countries. Simulation results show that service sector trade liberalization not only directly affects world service production and trade, but also has significant implications for other sectors in the economy. The major channel of the impact is through inter-industry input-output relations and TFP growth induced from services imported by developing countries from developed countries, which may be embodied with new information and advanced technology.