第十届亚太无损检测会议情况综述

介绍在澳大利亚召开的第10届亚太无损检测会议的概况，简要阐述了会议所揭示的一些无损检测技术未来发展动态。     

Toxaphene trends in the Great Lakes fish

As part of the U.S. Great Lakes Fish Monitoring and Surveillance Program (GLFMSP), more than 300 lake trout (Salvelinus namaycush) and walleye (Stizostedion vitreum vitreum) collected from the Laurentian Great Lakes each year from 2004 to 2009, have been analyzed for total toxaphene and eight selected congeners. The analytical results show fish toxaphene concentrations are quite different among lakes. Between 2004 and 2009, Lake Superior lake trout had the highest concentration (119 to 482 ng/g) and Lake Erie walleye had the lowest concentration (18 to 47 ng/g). Combining these results with the historical total toxaphene data (1977–2003), temporal changes were examined for each lake. Because of different analytical methods used in the previous studies, the historical data were adjusted using a factor of 0.56 based on a previous inter-method comparison in our laboratory. Trend analysis using an exponential decay regression showed that toxaphene in Great Lakes fish exhibited a significant decrease in all of the lakes with t_1/2 (confidence interval) of 0.9 (0.8–1.1) years for Lake Erie walleye, 3.8 (3.5–4.1) years for Lake Huron lake trout, 5.6 (5.1–6.1) years for Lake Michigan lake trout, 7.5 (6.7–8.4) years for Lake Ontario lake trout and 10.1 (8.2–13.2) years for Lake Superior lake trout. Parlars 26, 50 and 62 were the dominant toxaphene congeners accounting for 0.53% to 41.7% of the total toxaphene concentration. Concentrations of these congeners generally also decreased over time.     

涂料工业的国内外发展趋势

概述了国内涂料行业发展趋势，揭示了我国涂料工业产品结构存在问题，指出应大力发展的方向。     

日本环氧树脂生产厂商发展概况

着重介绍日本环氧树脂主要生产厂商的发展概况     

钢铁材料新需求与生产技术的发展

围绕21世纪高科技的发展，讨论了能源工业，交通运输。航空技术对新型钢铁材料的社会需求。进下阐明为了实现钢铁材料的不断创新，今后钢铁生产工艺的技术发展趋势。     

Testing for reliability improvement or deterioration in repairable systems

This paper reviews the derivation and application of the reverse arrangement test which is used to assess whether a system has improved or deteriorated in a reliability sense. Because the well-known and published table of statistics for this test is erroneous, the prime objective of this paper is to provide the correct statistical table. A secondary aim, however, is to demonstrate how this table can be applied when there is a paucity of failure data for each individual system and to show how a more meaningful reliability assessment can be obtained by pooling results, from the reverse arrangement test, for several systems.     

生物降解液压液

概述了生物降解液压液的种类、性能、试验方法，规范标准，应用及发展趋势等，指出国内研制开发生物降解润滑剂的必要性。     

精细化工及其现状

简要介绍了精细化工及其特点,发达国家发展现状和趋势,以及我国精细化工的问题及应采取的对策。     

机遇与挑战背景下的思考

通过对上海近年城市绿化建设的回顾,从"公众参与"、"专业评论"、"本土特色"、"人才培养"等多角度进行探讨,提出上海的绿化建设正面临着新一轮的机遇与挑战.