Detection of cannabinoids in homicide victims and motor vehicle fatalities

A gas chromatographic/mass spectrometric (GC/MS) procedure is described for the detection and measurement of delta 9-tetrahydrocannabinol, 11-hydroxy-delta 9-tetrahydrocannabinol, and 11-nor-delta 9-tetrahydrocannabinol-9-carboxylic acid in blood, or 11-nor-delta 9-tetrahydrocannabinol-9-carboxylic acid in urine. About 50% of all homicide victims and motor vehicle drivers killed in Bexar County in 1985 were tested for the presence of cannabinoids. Of 130 homicides and 69 drivers tested, blood was analyzed primarily in all but 15 and 3 cases, respectively. In these latter cases, blood analyzed after urine was found to be positive. Of the homicide victims, 44 (34%), and of all drivers, 19 (28%), tested were positive for one or more of the cannabinoids. As a separate group, 16 motorcycle drivers tested had 38% positive as compared with 25% of the other vehicle drivers. Ethyl alcohol was present in 55% of the drivers, and in 63% of the homicide victims. Drugs other than alcohol or cannabinoids were found in 10% of the drivers, and in 12% of the homicide victims.     

脑功能磁共振成像及其法医学应用前景

脑功能磁共振成像是近年来磁共振成像技术的一项新发展。它不仅能清晰、准确地显示脑组织的解剖和病理改变,还能同时观察到脑皮层功能活动时的信息,可无创、实时地对大脑的功能活动进行成像。为法医学领域中所涉及的人体损伤程度鉴定和伤残等级评估以及对法医精神病领域中认知功能的界定,从单一形态学研究到形态与功能相结合的系统研究开辟了一条崭新的道路。本文就人脑的功能活动磁共振成像的概念、原理、优势、临床研究状况及法医学应用前景进行综述。     

浅谈我国高校生态教育建设

随着全球经济的飞速发展,全球性的生态环境危机引起各国的广泛关注,我国也提出了树立科学发展观、构建和谐社会的问题。教育是实现可持续发展战略的关键一环,生态环境素质也已经成为21世纪人才必须具备的基本素质之一,而高校是培养社会人才的摇篮,当前我国高校的生态环境教育极其缺乏,高校生态环境教育亟待加强。     

西海固的梦想

<正>In 2005,I,with eight schoolmates from Xiamen University,went to Xihaigu in Ningxia to be a supporting teacher for a year..This is intended to tell a western China what I have seen and experienced as well as authentic stories about the children in bitter pursuit of their ideals on the plateau.     

亨利·列斐伏尔的社会空间理论

社会空间是一种社会性的产品,空间产品相对过剩会产生经济危机。空间实践、空间表述、表述空间构成社会空间的三元辩证组合或者三元辩证法,第三项不是前两项的简单叠加,而是对它们所假定的完整性进行拆解和重构之后,形成的一种开放的选择项。社会空间包含着复杂的符号体系,空间三元组合类似于符号学的能指、所指、意指三项组合。身体是社会空间的生产主体,社会空间的生产从身体开始,处于异化状态的身体受权力、符号、知识三位一体控制。只有生产出社会主义差异空间,身体才能获得完全解放。当前全球经济危机的实质是城市化危机,中国正处于城市化危机的起始阶段。     

15个基因座复合扩增体系的建立及新疆维吾尔族遗传多态性

目的建立15个基因座五色荧光复合扩增体系,并调查新疆维吾尔族的遗传多态性。方法筛选STR基因座,等位基因测序后按照重复序列重复次数命名,对建立的15个基因座五色荧光复合扩增体系进行灵敏度、种属特异性、同一性及稳定性检测,对新疆维吾尔族群体进行遗传多态性分析,与西藏藏族、岫岩满族、广州汉族进行群体间比较。结果建立了15个基因座复合扩增体系,检测灵敏度为0.3 ng,具有良好的种属特异性、同一性和稳定性。新疆维吾尔族13个常染色体STR基因座的基因频率分布符合Hardy-Weinberg平衡,无连锁不平衡现象,大部分基因座在群体间差异具有统计学意义。结论建立的体系具有法医物证学应用价值,13个常染色体STR基因座在新疆维吾尔族群体多态性高,适合于亲子鉴定及个人识别,可作为现有基因座的补充。     

The Erratic Behavior of Lesions in Burnt Bone

This study analyses depressed fractures (by blunt force trauma) and circular full‐thickness injuries (drill injuries and gunshot wounds) in charred bones. Fifty bovine ribs (total 104 lesions) were divided into three groups. The first group consisted in 20 depressed hammer‐produced fractures; in the second one, 60 round drill‐holes were produced (30 circular, 30 semicircular); in the third group, 12 fleshed and 12 skeletonized ribs were hit by 9‐mm bullets. Each specimen was carbonized in an electric oven up to 800°C. Morphological and metric analyses were performed before and after: morphological features were preserved, but depressed fractures showed an increase in their dimensions (p‐value < 0.05); the drilled holes shrunk (p‐value < 0.01); the charring cycle increased the number of fractures in samples with gunshot wounds differently in fleshed and defleshed ribs. This study showed the complex behavior of charred bone, for what concerns the interpretation of trauma and how caution should be applied.     

可持续发展与文明转型

全人类正共同面临着一场新的人口资源危机,面临着一场新的文明转型,如果没有新技术的革命性突破和全球资源配置体系的革新,人和自然的矛盾将迅速激化,因此必须经过文明的转型,进入新文明时期,从而实现人与自然更大的和谐。     

武装头脑 完善机制 解决难题——地方党政领导班子按照科学发展观要求加强自身建设的思考

地方党政领导班子按照科学发展观要求加强自身建设，首先，要加强学习，进行理论武装，提高贯彻落实科学发展观的自觉性和坚定性；其次，要建立健全科学的政绩考评和用人机制，引导广大领导干部进一步践行正确的政绩观；再次，要全面落实惠民政策，突出解决民生问题，进一步发扬密切联系群众、求真务实的优良作风。