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。     

Spatial planning for landscape: mapping the pitfalls

While welcoming the European Landscape Convention and acknowledging the successes of conservation organizations such as the National Trust in Britain, the Czech Village Restoration Scheme and the French eco‐musées, this paper identifies some of the pitfalls that must be avoided if the fine words of the Convention are to be translated into effective action. These include problems with designation, conflicts between different types of conservation, and the side effects of gentrification and increased tourism. There is a call for more research to break down barriers to understanding between countries, between disciplines, and between academics and practitioners.     

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。     

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.     

Encrypted Workflows: The Secret World of Objects

Specific Objects is a New York-based interdisciplinary design practice. Rhett Russo , one of its directors, is developing architectural assemblies that are informed by the specific properties of ceramics, how these traits become encrypted through technology, and at what cost. Drawing on the philosophical writings of Tristan Garcia, Bernard Stiegler and Graham Harman, the art of Jiří Kolář and a competition design by his own firm, he explores ways that the peculiar nature of objects initiate new workflows.     

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。     

对国标法测定山梨糖醇液的探讨

探讨了国标ＧＢ７６５８－ ８７ 的适用范围、测定山梨醇含量的误差及Ｆｅ２＋ 对测定Ｎｉ２＋的干扰,提出了修改国标的一些建议     

防老化聚烯烃母料及编织制品

本文简介了编织物用防老化聚烯烃母料的种类、组成及性能，另外，也介绍了各种防老化编织制品。     

Numerical simulation and validation of gas-particle rectangular jets in crossflow

This paper presents a numerical study of a gas-particle flow in three inclined rectangular jets in crossflow. The predicted gas phase velocities and particle phase velocities are validated against previously reported experimental data. Two turbulence models, the standard k-? model and Shear Stress Transfer (SST) model, are used to model the gas phase turbulence. This work shows that both models provide acceptable predictions of the gas flow and mixing generated by the three jets. Neither model could accurately reproduce the jet core and the flow near bottom wall. The particle phase in this flow comprises a large number of small particles. Thus particles follow the gas phase flow closely and any errors in the turbulence model and gas flow predictions are passed on to the particle phase simulation. This paper also includes a literature review on rectangular jets in crossflow and gas-particle laden jets in crossflow.     

关于《化妆品卫生规范》（2007年版）中菌落总数测定方法的探讨

参考《中国药典》微生物检验的验证方法,以金黄色葡萄球菌、枯草芽孢杆菌和大肠埃希菌三株菌为验证菌株,分别采用营养琼脂培养基和卵磷脂、吐温80一营养琼脂培养基,对7个化妆品进行了菌落总数检验方法的验证。结果表明,卵磷脂和吐温8U可以作为中和剂部分消除化妆品中防腐剂的抑菌作用。只有2个样品适用于目前《化妆品卫生规范》2007年版的菌落总数检验方法。对于另外5个样品,分别建立了适合于它们的菌落总数检验方法。