金属制品国家标准中试验方法的书写问题

分析金属制品国标中反复弯曲试验及单向扭转试验方法的书写问题，并对此提出建议。     

Validation of analytical methods for nuclear spent fuel reprocessing

For more than 50 years, CETAMA, the Commission for establishment of analytical methods from the French Alternative Energies and Atomic Energy Commission, has provided Certified Reference Materials and Interlaboratory Comparisons for the development and validation of analytical methods in the nuclear field. In the future, the nuclear spent fuel reprocessing industry will require new standards and methods to comply with high content plutonium fuel and new extraction solvents. These standards and methods will have to be fully validated in order to ensure the quality of the analytical results obtained by the laboratories.In this context, a new ²⁴²Pu reference material, certified for its isotopic composition, has been recently produced. A novel statistical approach for data processing has been used and has led to a certified value of 0.985459 ± 0.000052 for the n(²⁴²Pu)/n(Pu) atomic ratio. In addition, an interlaboratory comparison has also been organized for the validation of a method for the analysis of DMDOHEMA, and its degradation products. This compound is considered as a new extractant candidate in the frame of separation processes for transmutation of long-lived radionuclides. The methodology and results obtained in both cases are presented.     

回归方程在标准加入法测高岭土中铜的应用

用原子吸收光谱法测定高岭土中铜,分别用标准曲线法及标准加入法定量分析铜元素含量,比较了作图法和回归方程法处理标准加入法数据。结果表明,随铜元素变量,标准曲线法及标准加入法均有较好的线性关系,但测定的结果有差异。标准加入法因可消除基体干扰,测得铜结果准确度高。标准加入法适合基体复杂的试样的分析。作图法及回归方程均适用于标准加入法测铜的数据处理,作图法误差大,而回归方程法是快捷,误差小的简便方法。     

制造企业参考架构中的软件

本文介绍了通用的生产软件Factory Talk在制造参考架构中的应用,以及如何把Factory Talk用于制造和企业信息的融合。     

电子专用设备标准化现状与展望

随着电子专用设备强劲的发展势头,标准化对企业产生越来越重要的作用。介绍了传统企业和现代企业对企业标准化的需求以及国内电子专用设备标准的状况,并就未来发展提出了几点建议。     

In-situ measurement of ethanol tolerance in an operating fuel cell

Ethanol is seen as an attractive option as a fuel for direct ethanol fuel cells and as a source for on-demand production of hydrogen in portable applications. While the effect of ethanol on in-situ electrode behavior has been studied previously, these efforts have mostly been limited to qualitative analysis. In alkaline fuel cells, several cathode catalysts, including Pt, Cu triazole, and Ag can be used. Here, we apply a methodology using a microfluidic fuel cell to analyze in-situ the performance of these cathodes as well as Pt anodes in the presence of ethanol and acetic acid, a common side product from ethanol oxidation. For a given concentration of ethanol (or acetic acid), the best cathode catalyst can be determined and the kinetic losses due to the presence of ethanol (or acetic acid) can be quantified. These experiments also yield information about power density losses from the presence of contaminants such as ethanol or acetic acid in an alkaline fuel cell. The methodology demonstrated in these experiments will enable in-situ screening of new cathodes with respect to contaminant tolerance and determining optimal operational conditions for alkaline ethanol fuel cells.     

Environmentally Smart Design: Designing for Social Wellbeing Across the City and in the Workplace

Sustainable need not mean more expensive. Health problems caused by sedentary lifestyles, pollution and injuries from road accidents come at great financial cost — not just for individuals, but also for employers and indeed national governments. Built environments designed to keep people active and away from harm are thus economically beneficial, too. Alisdair McGregor, Ann Marie Aguilar and Victoria Lockhart of Arup cite some of the company's recent schemes in New York and London that have successfully encouraged cycling, strolling and other healthy behaviours, while also avoiding contributing to climate change.     

参考中子辐射与辐射防护中子测量装置校准

国际标准化组织核能标准化委员会辐射防护分委员会(ISO／TC 85／SC2)最近编制了几个有关辐射防护中子测量装置校准的标准，其中ISO8529规定了参考中子辐射的特性和产生方法、辐射场校准以及场所和个人中子剂量仪(计)校准和响应的确定；此外，ISO12789—2002规定了利用模拟中子辐射场对辐射防护中子测量装置的校准。本文介绍ISO8529系列标准的主要内容及一些相关问题。     

对公众慢性照射防护的一些讨论

本文介绍了近年来国际放射防护委员会（ＩＣＲＰ）、国际原子能机构（ＩＡＥＡ）以及一些学者对公众慢性照射防护问题的一些讨论,涉及定义与范围、相关量、ＩＣＲＰ防护体系的应用以及实用指南等。它可以作为制订我国《电离辐射防护和辐射源安全的基本安全标准》的借鉴。