Terminally ill patients and volunteer support: Is it the right intervention?

Comments on the article by K. T. Herbst-Damm and J. A. Kulik (see record 2005-02260-012) entitled Volunteer support, marital status, and the survival times of terminally ill patients. Can a simple and low-cost intervention, such as a visit by a volunteer, extend the life of terminally ill patients? The answer, according to a study by Herbst-Damm and Kulik (2005), is yes. When it comes to quality of life, however, the effects of volunteer visits remain murky. Thus, it is critical that we look beyond effects on longevity and assess how such a program would influence quality of life. Extending the life of terminally ill patients might not always a blessing. Prolonging their life might even cause harm, as it can extend unwanted physical and mental suffering. It may also go against some patients' desire to hasten their death. Despite Herbst-Damm and Kulik's important findings, the current author remains unconvinced as to the merits of implementing volunteer visits as an intervention policy. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

对增量CRL应用的一些研究

本文对PKIX依从系统中增量CRLs的应用进行了一些研究，包括：增量CRL的时间跨度对性能的影响及其最优选择；基于完全CRL与增量CRL检查证书状态以及构造新的完全CRL的算法。     

利用自定义过程实现函授生的学籍变动

介绍了一个在VFP环境下基于自定义过程的学生学籍变动系统的设计与实现。     

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。