物理形态及包衣处理对氧化性固体包装分类判定的研究

为了研究物理形态及包衣处理对氧化性固体氧化性质的影响,选择颗粒状过碳酸钠作为氧化性固体待测物质,在此基础上进行0.5 mm过筛和研磨处理。根据联合国《关于危险货物运输的建议书试验和标准手册》中O.3:氧化性固体的试验方法测试燃烧速率。通过实验结果可以得出样品的氧化性为:过碳酸钠<过碳酸钠(<0.5 mm)<过碳酸钠(粉末)。通过比较包衣/未包衣的实验结果可以证明包衣处理对氧化性固体氧化性质起到明显的减缓作用。建议对氧化性固体的形态和情况更加全面和精确的描述,确保氧化性固体分类判定的准确性。     

重铬酸盐浓度对低浓度含氯水样中化学需氧量测定的影响

讨论了重铬酸盐法GB 11914-89的测定用高低浓度重铬酸钾氧化含氯低浓度COD水样对测定结果的影响,根据水中氯化物含量,加入定量的固体硫酸汞屏蔽氯化物进行测定,对比高低浓度重铬酸钾氧化测定结果。     

油液污染及控制点滴

1．污染类型 （1）固体颗粒污染。常使阀件卡紧、增加泄漏、滤器堵塞、油液氧化等。实践表明，5-15μm的固体颗粒最易使阀卡紧；10～30μm颗粒会造成动力元件磨损；轴向柱塞泵配油盘处，对于10-15μm的固体颗粒敏感；径向泵与马达对15～25μm的颗粒敏感；叶片泵对20～30μm的颗粒敏感。     

我国首次发布微生物类真菌农药国家标准

我国首次制订的微生物类真菌农药五个基础性国家标准近期已发布,并将于2008年8月1日实施。这五个标准是：真菌农药母药产品标准编写规范GB／T21459．1-2008、真菌农药粉剂产品标准编写规范GB／T21459．2-2008、真菌农药可湿性粉剂产品标准编写规范GB／T21459．3-2008、真菌农药油悬浮剂产品标准编写规范GB／T21459．4—2008和真菌农药饵剂产品标准编写规范GB／T21459．5-2008。     

工业自动化系统与集成 机床数值控制数控系统通用技术条件(摘选)(五)

2011-01-14发布2011-05-01实施5.6数控系统的保护和安全试验5.6.1电击防护试验试验目的:检验以确保操作人员或维护人员不会受到电击的伤害。试验方法:根据GB 4208—2008、GB 5226.1—2002。试验步骤:a)对数控系统的电柜和机箱,根据产品的技术设计要求进行目测检验并应符合4.6.1的要求。b)对于有防护等级要求的电柜和机箱,应结合5.3.2的防护     

日程表

September．10汽车用制动器衬片国家标准2009年9月10日开始实施。由国家非金属矿制品质量监督检验中心主持修订的摩擦材料行业标准汽车用制动器衬片（刹车片）标准GB5763-1998，已于2008年6月28日审议通过。目前的标准号是GB5763-2008。实施日期是2009年9月10日。     

含酸原油有机氯含量分析方法的研究

本文对比研究了两种方法测定含酸原油中有机氯的含量,通过比较确定了测定有机氯含量最佳方案。结论显示对于含酸原油测定有机氯需要通过氧化库仑法对总氯的含量进行测定,然后借助SY/T 0536~2008对无机氯的含量开展检测,最终通过差减法算出含酸原油中有机氯的含量。而同时结果显示通过GB/T 18612~2011方法测定含酸原油中有机氯的含量并不适用。     

三标管理体系在水利水电行业中的应用

以某公司为例,依据GB/T 19001-2008、GB/T 24001-2004、GB/T 28001-2011标准,进行三标管理体系建设工作,以内部审核和管理评审作为常态监督机制,顺利通过三标管理体系认证审核,为三标管理体系在水利水电行业中的应用探索新途径。     

关于储油罐区防火堤设计的若干问题探讨

在GB50183-2004《石油天然气工程设计防火规范》、GB50016-2006《建筑设计防火规范》、GB50351-2005《储油罐区防火堤设计规范》、GB50074-2002《石油库设计规范》、GB50160-2008《石油化工企业设计防火规范》等标准中,对原油储罐区的防火堤设计有明确的规范与要求,     

信息

国家发布首个吸湿快干纺织品的评价标准国家质量监督检验检疫总局首次发布纺织品有关吸湿快干性的评价标准,标准编号为:GB/T21655.1-2008,将于2008年12月1日正式实施。纺织品的"吸湿快干"(或称"排汗导湿")性能首先是作为一种商业称谓的形式出     

增强Linux系统安全性的措施

L inux系统的安全取决于系统管理员如何来管理它。本文探讨了一系列可以增强安全性的技巧与策略 ,包括 :系统安装原则、BIOS安全、口令安全策略、设计帐户自动注销功能、文件系统和日志安全策略、使用 SSH及 TCP-WRAPPERS,隐藏系统信息、删除所有特殊帐户、关闭控制台程序、限制系统中的 SUID/ SGID程序等。本文最后向 L inux系统管理员提出了一些安全管理方面的建议     

CIS与现代企业管理美学

概括性介绍了 ＣＩＳ（Ｃｏｒｐｏｒａｔｅ Ｉｄｅｎｔｉｔｙ Ｓｙｓｔｅｍ）的三大基本组成，并阐述了它与现代企业管理密不可分的相互联系及所处的举足轻重的地位，指出导入ＣＩＳ是现代企业谋求发展的重要手段。     

Divergent patterns of engagement in Internet standardization: Japan,Korea and China

This article analyzes the engagement of Japanese, Korean and Chinese participants in the development of Internet standards at IETF on the basis of four quantitative metrics: attendance, patenting, authorship and leadership. The results are strikingly divergent. Japanese involvement in Internet standardization began early and Japan was, for many years, second only to the U.S. in terms of IETF participation. Though Japanese participation has declined since the early 2000s, Japan remains a major contributor to IETF standardization. Korean involvement in IETF has always been significant, but below the levels of Japan and major European countries. Korean participation in IETF has also declined over the past decade, and has been dominated by one firm, Samsung. Though meaningful Chinese involvement in IETF did not begin until the mid-2000s, it has rapidly expanded in recent years. Today, China is a major player in numerous areas of Internet standardization in terms of three metrics (participation, patenting and leadership), and is rapidly gaining in terms of document authorship as well. Most of China׳s recent IETF involvement can be attributed to Huawei, though other Chinese firms have recently begun to increase their participation in the organization. Thus, contrary to some views that China׳s engagement with standardization is primarily one of indigenous innovation and “catching up”, China׳s experience with IETF demonstrates deliberate and effective engagement with a major Western standards-development organization on its own terms.     

Comparing FTTH access networks based on P2P and PMP fibre topologies

There is an ongoing discussion in the market which Next Generation Access (NGA) architecture best suits future needs and which investment and cost differences exist. The discussion can be subsumed as P2P vs. GPON, which is somewhat misleading as this article reveals. The discussion is driven by the fact that the high capital cost and the long asset life time of fibre mean that the technology choices made today will dominate the opportunities for telecommunication business of all market players, incumbents, competitors, content providers and business and residential users for many years in the future.The paper analyzes the cost and other differences between Fibre-to-the-Home (FTTH) access network architectures and their related different wholesale approaches by using the well-known and understood steady state approach applied in other NGA analyses in the past. In addition to the steady state analysis a dynamic cost evaluation is included taking into account the different investment behaviour of the FTTH architectures over time. The results describe investment and cost differences between architectures, incumbents and wholesale based competitive operators. The analysis has been performed for different geotypes (clusters) of decreasing population density in a representative European settlement structure.     

Whose Image is it Anyway?: Some Considerations of the Curricular Importance of Subject Image in Secondary School Design and Technology Education

This paper explores the idea that a sense of school subject image is a necessary feature of curriculum management and a potent force for change. The discussion centres on the view that all school subjects have an image and that if those intimately involved with the subject do not control the image then someone else does! In such circumstances the image is the product of past encounters and old euphemisms and is unlikely to hold the changed realities.The UK developments in Design and Technology education (the term Design and Technology is used to denote the school subject defined under this heading by the UK National Curriculum, 1995) have created something of an image problem which has interesting international parallels. Some of these problems are due to clearly discernible internal tensions and an ambiguous relationship with other subject areas.Through greater attention to subject image internal controversies might be acknowledged and resolved, relationships with other subject areas can be more meaningfully understood and practitioners can be helped to make sense of curriculum change.     

Diffusion and usage of public e-services in Europe: An assessment of country level indicators and drivers

We analyze the state of the art of indicators on e-government, e-health, e-procurement and e-participation. We survey the main methodological properties of these indicators, and highlight their heuristic potential. Further, we address empirically the issue of the explanation of the availability scores, i.e. how the supply of the various e-services in each country is affected by political, institutional and socio-economic differences, and is followed by actual usage. The econometric analysis uncovers the importance of broadband penetration and higher education as drivers for most of the types of e-services and users (citizens and businesses). Moreover, a corruption-free and agile public sector proves to be an important pre-condition for more effective supply and usage. Despite data limitations and the complexity of the underlying diffusion phenomena, our study is the first truly longitudinal contribution aimed at disentangling the common drivers of such an important phenomenon – the e-services availability and usage across European countries. As such, this work appears useful to inform the policy debate and practice, in a phase characterized by a prospective reorientation of the public e-services provision and policy agenda.     

一种高精度的频率标准比对系统

频率标准源可以提供精确的标准频率,在测定频率标准源的各项性能指标时,要求测试系统必须具有很高的比对精度。所设计的频率标准比对系统采取多级倍频 混频方式使频率偏差逐级扩大后再测量,从而避免了直接进行高次倍频的困难,提高了测量精度,可以对高精度的频率标准的准确度、长短期频率稳定度进行快速测量,是一种高精度时畴参数测量系统。     

Indigenous peoples’ nutrition transition in a right to food perspective

In indigenous communities the nutrition transition characterized by a rapid westernization of diet and lifestyle is associated with rising prevalence of chronic disease. Field work and literature reviews from two different policy environments, Argentina (Jujuy) and Canada (Nunavut), identified factors that add to indigenous peoples’ disease risk. The analytical framework was the emerging human right to adequate food approach to policies and programmes. Indigenous peoples’ chronic disease risk tends to increase as a result of government policies that infringe on indigenous peoples’ livelihoods and territories, undermining their economic system, values and solidarity networks. Policies intended to increase food security, including food aid, may also fuel the nutrition transition. There is a need to explore further the connection between well-intended policies towards indigenous peoples and the development of chronic diseases, and to broaden the understanding of the role that different forms of discrimination play in the westernization of their lifestyles, values and food habits. Food policies that take due account of indigenous peoples’ human rights, including their right to enjoy their culture, may counteract the growth of chronic disease in these communities.     

The role of government in broadband access

This paper discusses the role of governments in broadband. It is divided into five sections. Following an introduction in section one, section two discusses the diffusion of broadband Internet. Section three deals with competition-based and public-goods views on regulation and the corresponding roles and issues for governments. To gain deeper insights into the role of government in broadband, section four analyses market regulation and public activities in furthering broadband deployment in the US, Korea and Europe. These insights are evaluated in relation to the theoretical considerations established in section three. Section five closes with a discussion of our results and some conclusions. It becomes obvious that national broadband strategies benefit from considering both public good and competition-related aspects.     

A strategic skill based model of supplier integration and its effect on supply management performance

Supplier integration is a tool to help organizations gain competitive advantage. Strategic supply management skills and the supply management function's perceived status are hypothesized as antecedents to supplier integration leading to supply management performance. The sample for this study includes 152 executive level supply management professionals. The empirical results suggest that strategic skills and perceived status are essential antecedents to supplier integration and subsequent performance. Further, the relationship between strategic skills and performance is mediated by supplier integration. Results of a dominance analysis also suggest which strategic skills are most likely to explain status integration, and performance. These findings have significant implications for supply management theory and practice.