顶空固相微萃取气相色谱法快速检测尿液中氯胺酮

目的建立快速检测吸毒人员尿液中氯胺酮的顶空固相微萃取(HS/SPME)-GC/NPD的方法。方法样品瓶中加入尿液、氢氧化钠溶液、氯化钠,在95℃下加热搅拌,用聚二甲基硅氧烷SPME萃取头(100μm)顶空萃取20min,气相色谱氮磷检测器检测,外标法定量。结果尿液中氯胺酮浓度在0.2~20.0μg/ml范围内呈现线性关系(r2=0.9965),尿液添加1.0μg氯胺酮,平均回收率102.6%,RSD=3.39%(n=7),检测限1.13ng/ml(S/N=3)。结论建立的方法简单、快速、灵敏、准确,十分适合尿液等生物检材中氯胺酮的快速定性定量分析。     

广西与东盟高校之间的合作与交流——对人才培养模式、专业与课程设置的探讨分析

一、引言自从中国与东盟签署了《中国—东盟全面经济合作框架协议》,决定到2010年建成中国—东盟自由贸易区,就为双方全方位合作带来广阔的前景。广西因其地理位置而成为中国—东盟自由贸易区的“桥头堡”,且我国在加入W TO后,教育的对外开放得到了进一步扩大,广西地处西部地区,又有国家给予的相对优惠的政策,因此,广西必须抓住机遇,迎接挑战。“科学技术是第一生产力”,在全球经济一体化的趋势下,发展高新技术产业越来越成为各国经济发展的重点,而科技又是以教育,尤其是高等教育为重心的。高等教育是所有国家,不论是发达国家还是发展中国…     

China-U. S. Economic and Trade Relations

Sino-U. S. economic and trade relations as the most important and dynamic component of bilateral ties have evolved into the stabilizer, pillar and driving force for cementing the linkage between the two capitals. Their furtherance along the designated line of treating a "stake holder" and handling a "constructive partnership" will carry an ever-ballooning strategic significance even in diplomatic and security terms. Nevertheless the general trend looks set to be incessant progress amidst reciprocal accommodation in disregard of occasional twists and turns.     

DEVELOPMENTAL AND LIFE‐COURSE CRIMINOLOGY: KEY THEORETICAL AND EMPIRICAL ISSUES‐THE 2002 SUTHERLAND AWARD ADDRESS*

The main aim of this paper is to advance knowledge and (especially) theories about developmental and life‐course criminology (DLC). First, I review the widely accepted DLC findings that all DLC theories have been designed to explain. Second, I review more contentious and unresolved empirical DLC issues that might present challenges to DLC theories. Third, I describe my own DLC theory and specify how it addresses key empirical and theoretical questions. Fourth, I summarize five important DLC theories, by Catalano and Hawkins, Sampson and Laub, Moffitt, LeBlanc, and Thornberry and Krohn. Fifth, I identify differences in assumptions and predictions between my theory and the other five theories. Finally, I recommend a detailed comparison of the key features of all DLC theories, of their answers to key empirical and theoretical questions, and of their predictions regarding key unresolved empirical DLC issues.     

SCHOOLS AS COMMUNITIES: THE RELATIONSHIPS AMONG COMMUNAL SCHOOL ORGANIZATION,STUDENT BONDING,AND SCHOOL DISORDER*

Research has indicated that school factors such as communal school organization and student bonding are predictive of school disorder, with greater communal organization and greater student bonding leading to less delinquency and victimization. Data from a nationally representative sample of 254 public, nonalternative, secondary schools were used to examine structural equation models representing hypothesized relationships among communal school organization, student bonding, and school disorder. The hypothesis that communally organized schools would have less disorder held true for teacher victimization and student delinquency, but not for student victimization. In addition, the hypothesis that the relationship between communal school organization and school disorder would be mediated by student bonding was supported for student delinquency, but not for teacher victimization.     

第二性,民主——关于民主地位的反思

民主在中国备受关注,对民主地位的理解常有对立。本文基于对中国现当代历史事实的反思,循唯物史观原理,论证了"第二性,民主"。提出:民族高于民主,民生高于民主,发展高于民主。民主进步的合理性不能仅由民主自身定,而应置于社会整体发展的参照系中观察。中国共产党提出"坚持党的领导、人民当家作主和依法治国有机统一",是中国现代化进程中民主政治建设的绩优框架,它是中国经验的总结,也是对西方民主理念进行"颠覆"性"落实"的后现代思维。     

A note on the status of discretion in police research

“Discretion” holds an unrivaled position at the core of the notional inventory employed in the study of criminal justice generally and policing particularly. Efforts to systematically define the term have been irregular and its status in the empirical literature is an ambiguous one. While spoken of as a quantitative aspect of the policing which influences behavior, measurement is rarely addressed. After sketching problems in present formulations, discretion is recast in terms of perceived job autonomy and an outline of two general constructs is contributed in hopes of renewing consideration of the potential relevance of the concept for police theory and research.