高效薄层色谱法检测尿中硝西泮的代谢物7-氨基硝西泮

目的 建立用高效薄层色谱法定性及半定量测定人尿中硝西泮的代谢物7-氨基硝西泮(7ANIZ)含量的方法。方法 人口服治疗量10 mg硝西泮后,在pH 9条件下用乙醚进行提取,分析物斑点用氟罗里丝进行荧光显色,紫外灯下(366nm)观察荧光斑点;根据斑点荧光显色情况及强度进行7ANIZ定性及半定量检测。结果 尿中硝西泮代谢物7ANIZ检出限为5 ng/ml,测量限为15 ng/ml。结论 人口服治疗量10 mg硝西泮,用高效薄层色谱法可定性及半定量测定48 h内排泄尿中的7ANIZ。     

Teenage suicide in King County, Washington. I. Rates of suicide for 26 years

The population-adjusted rate of teenage suicide in King County, Washington, was reviewed for the 26 years from 1959 to 1984. For the entire period, the rate did not change significantly. An abrupt change did occur during the middle of this period, but, for reasons discussed in the text, this may well represent a change in procedures and philosophy of death certification rather than a real change in rate. Reasons for the apparent discrepancy with national statistics are discussed.     

警察心理的国内研究现状评述

我国对警察心理的研究起步较晚,目前还处在发展阶段。就目前的研究现状来看,大致可以分为三个研究流派:经院派、公校派和实务派;主要研究内容包括五个方面:警察群体心理特征、警察心理健康问题、警察心理压力问题、警察职业耗竭问题、警察实战应用心理问题;研究阶段分为萌芽起步阶段和发展阶段,约15年左右的时间。     

Human Rights and Modern Liberalism: a Critique

The idea of human rights has become one of the central moral notions of both the theory and practice of international politics. While its foundation and future in the practice of politics looks bright, it is an idea that still causes great trouble at the theoretical level. What are human rights? Why do we have them? To what should we attribute the authority of their moral claims? The theorist Michael Freeman has suggested one theory that by addressing such questions may serve as a foundation for human rights. His theory, however, ends by begging the questions it set out to answer.