Employment status passages and psychosocial well-being.

Medical students entering the labor market were studied to find out whether the improvement of psychosocial well-being depends on characteristics of their careers. Psychosocial well-being was described on the basis of psychosomatic stress symptoms, psychological distress (General Health Questionnaire), and strain resistance resources (Sense of Coherence). The 3-year follow-up showed that among women the improvement of strain resistance resources was delayed in the group with several entries into work. Among men the findings suggested associations between stress symptoms and career characteristics. Most of the results, however, did not support the hypothesis about the division of the participants into those with a stable career and improving well-being and those with a fragmented career and low well-being. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

生物降解塑料开发现状与发展趋势

本文简要介绍国内外生物降解塑料的现状与发展趋势。     

浅谈我国旋转防喷器技术的现状与发展

介绍了我国旋转防喷器技术的发展现状，分析了几种不同类型旋转防喷器的结构特点，指出旋转防喷器的发展方向及其与国外同类技术之间的差距。     

气动冲击器研究现状及发展趋势

阐述了气动冲击旋转钻井用气动冲击器国内外近期的研究现状,以及各类冲击器的结构和性能参数,并提出了气动冲击器的发展趋势。     

井下气液分离及回注技术研究现状分析

气井产水量的不断增加对天然气生产构成严重威胁，其影响越来越受到人们的关注和重视。使用井下气液分离及回注技术，可以降低举升和处理费用，增加生产寿命，提高采收率，减少环境污染，简化地面分离设备，提高投资效益。针对井下分离及回注技术研究现状进行了分析，给出了并下气液分离及回注形式、适用条件和技术设计、应用方面的结论。     

Water quality assessment of a recently refilled reservoir: The case of Bütgenbach Reservoir, Belgium

Bütgenbach Reservoir is situated in the High Ardennes plateau in eastern Belgium (50°25′N; 6°13′E). It is used principally for flood control and for production of hydroelectric energy. It has been subjected to a previous series of studies because of its eutrophication problems and their impacts on the local economy. Bütgenbach Reservoir was emptied during spring 2004 for dam restoration, being refilled in mid‐September of the same year. Selected physicochemical and biological parameters (temperature, dissolved oxygen, pH, inorganic and organic nutrients, chlorophyll‐a) were measured fortnightly during the lake's productive season (mid‐April to mid‐October 2005) at three sampling sites throughout the water column. The water quality conditions after refilling of the lake were compared to previous studies accomplished at the same sampling sites (prior to emptying the lake). The actual trophic status was mesotrophic to eutrophic, based on the combination of total phosphorous and chlorophyll‐a concentrations, as well as water transparency. Bütgenbach Reservoir generally exhibits good water quality, based on the French water quality system SEQ‐eau. A longitudinal decrease in water quality was observed from upstream to downstream, because mainly of the differences in lake bottom morphology and water residence time, and their impacts on nutrient distribution in the lake.     

制造业中、高级职业技术教育刍议

论述了制造业中、高级岗位职业技术教育的意义、现状、存在问题及其人才市场要求，探讨了办好制造业职业技术教育的几个关键问题。     

虚拟现实技术的若干问题及发展展望

虚拟现实技术是上个世纪后50年发展起来的一门新兴边缘学科,本文对虚拟现实技术的概念、分类、研究现状、其关键技术及技术难题等方面做了阐述,并对虚拟现实技术的发展进行展望。     

乳胶漆的市场现状和发展前景

对乳胶漆的生产现状，产品结构以及研究开发情况作了简单的综述，并展望了乳胶漆的发展前景。     

2005年中国电信运营市场发展现状与展望

2005年是中国电信业的“转型年”．国内电信运营商依赖投资拉动增长速度减缓的趋势得以深化。国内电信运营商的投资更加趋于理性。通过总结2005年田内电信运营市场态势、各运管商发展策略、行业热点及未来展望四个方面阐述国内电信运营市场的发展状况。