Impact of tropical conditions on thin layer chromatography in analytical toxicology: high temperatures and moderate humidities.

The impact of high temperatures (24 to 39 degrees C) and low to moderately high humidities (20 to 70%) on the applicability of TLC systems for drug identification was studied during a 6 month climatologic cycle in Burkina Faso (West Africa). In general, the Rf values as observed on the plates were found to be substantially affected as compared with values obtained at temperate climates. Some TLC systems were more affected than others and the largest deviations of up to 30 Rf units were at low humidities. Tropical conditions also had a negative effect on the reproducibility of Rf values. However, when an Rf-correction procedure was applied, using reference mixtures of known drugs on each plate, accuracy as well as reproducibility of the resulting Rfc values were drastically improved and data thus corrected were found to be compatible with existing TLC data bases developed under moderate climatological conditions. The impact of high to extremely high humidities (70 to 100%) remains to be investigated.     

Law enforcement information sharing: A Florida case study

Many attempts have been made over the last several decades to improve communication among law enforcement agencies. This article is a case study of a “low-level” data sharing project in Florida that could serve as a national model. The Florida Law Enforcement Data Sharing Consortium is a partnership between the University of Central Florida and more than one hundred law enforcement agencies. It offers an inexpensive, yet technically advanced alternative to the proprietary data sharing model. Its distributed architecture was endorsed by the Markle Foundation, the 9/11 Commission, and the 2004 National Security Act. Civil liberties concerns raised by this and other types of data sharing projects are discussed.     

心理应激与故意犯罪心理产生的关系

心理学的发展为预防和打击犯罪这一课题的研究提供了新的思考方向。心理应激是心理学的一个基本概念 ,可以从心理应激与犯罪心理产生之间的关系展开初步探讨 ,并进一步以案件为例加以印证。     

世界经济指标

表1:1996-2006年世界主要国家或地区天然气年产量(单位:10亿立方米)国家或地区19961997199819992000200120022003200420052006变化①比重②世界合计2227.92231.52279.52343.72425.22482.12524.62614.32703.12779.82865.33.00.0欧盟25国219.0211.1209.8213.1218.4220.1215.4212.0215.3199.8190.0-4.9%6.6%OECD1019.11024.41036.11048.51070.21092.81081.21085.91083.61065.91078.51.17.8%前苏联669.0627.4644.5656.2674.5677.3691.9723.5745.8760.0779.32.5'.1%其他新兴经济体539.8579.7599.0639.0680.4712.0751.6804.9873.7953.910…     

行政问责制对地方政府经济行为的影响——制度堕距的视角

行政问责制是构建责任政府的具体制度安排。问责制度在制度设计与制度执行层面存在制度堕距。制度堕距对地方政府经济行为产生重要影响,因此,从制度设计与制度执行层面改进问责制制度文本,消弭制度堕距,有助于构建优良的问责制制度,推动地方政府经济行为合理化。     

Crime Victimization: Assessing Differences Between Violent and Nonviolent Experiences

Experiencing a criminal victimization is among one of the most stressful human experiences. A cross-sectional study of victims of violent crime and victims of nonviolent crime suggests that there are statistically significant differences in experiences in the initial aftermath of the crime event and a few common effects. This article describes the common effects that are associated with criminal victimization in the context of intense distress and discusses the theoretical implications of well-being in the coping process. One hundred seventy-five victims of violent or nonviolent crime were interviewed. Implications for social work practice and theory and future research are delineated.     

The future of Fair Trade coffee: dilemmas facing Latin America's small-scale producers

Fair Trade has become a dynamic and successful dimension of an emerging counter-tendency to the neo-liberal globalisation regime. This study explores some of the dilemmas facing the Fair Trade movement as it seeks to broaden and deepen its impact among the rural poor of Latin America's coffee sector. We argue that the efforts to broaden Fair Trade's economic impact among poor, small-scale producers are creating challenges for deepening the political impact of a movement that is based on social justice and environmental sustainability. The study is based on two years' research and seven case studies of Mexican and Central American small-scale farmer cooperatives producing coffee for the Fair Trade market.     

辽中南城市群的发展概况及对策

辽中南城市群属于我国东部沿海城市群之一,也是近年来公认的四大城市群之一,随着东北老工业基地的振兴,辽中南城市群的地位也越来越突出。总结了辽中南城市群的发展概况并针对其发展目标提出相应的发展对策。     

美洲开发银行行长谈拉美金融危机以及中国的成员资格等问题

2005年4月18日,美洲开发银行行长恩里克·伊格莱西亚斯先生应邀到中国社会科学院拉丁美洲研究所做演讲,重点阐述了他对拉美金融及银行业的危机、代价、教训和防范问题,以及中国加入美洲开发银行等问题的观点和看法。综观20世纪90年代以来拉美地区所发生的金融危机,其频率之高、对危机的易感性之强、所付出的代价之大都超过其他地区。在所发生的5次大的金融危机中,有3次是“源发性”危机,即1994年墨西哥金融危机、1999年巴西金融危机和2001年阿根廷债务危机;有2次是“感染性”危机,即受1997年亚洲金融危机和1998年俄罗斯金融危机的感染所引发…