An in vitro study of the accuracy and precision of Breathalyzer models 900, 900A, and 1000

Ninety Breathalyzer instruments (Model 1000) and twenty instruments (Models 900, 900A) were studied using a protocol described by the Department of Transportation's "Standard for Devices to Measure Breath Alcohol." Although the mean of each of three concentrations tested (0.05, 0.10, and 0.15 g/210 L) compared favorably in both series, the standard deviation was consistently higher for the Model 1000 instruments. The Model 1000 instruments also produced a significant number of test results which exceeded the normally expected scientific deviation.     

Heroin abuse and a gas chromatographic method for determining illicit heroin samples in Singapore.

The abuse of heroin (diacetylmorphine) in Singapore escalated sharply in 1975 and 1976, as indicated by the 35-fold increase in the number of heroin seizures and the 20-fold increase in the urine samples containing morphine since 1974. A rapid and simple GC method has been described to estimate diacetylmorphine (and caffeine). Monoacetylmorphine and acetylcodeine may be ascertained by an additional step involving acetylation. All gas chromatograms of a large number of samples analyzed consistently had the same pattern, indicating that they possibly had a common origin. This GC "fingerprint," together with the quantitative data, appears to be characteristic of the illicit Asian or Chinese type of heroin found in Singapore. The proportions of the four major ingredients in some twelve typical samples have been tabulated. Statistical data confirming the accuracy and reproducibility of the analytical method have also been presented.     

亚洲国家犯罪趋势和预防犯罪的策略(续)

本文所谓香港,应为香港地区;"大韩民国"是指在美伪集团统治下的朝鲜南牛部,故文中的"大韩民国"均改为南朝鲜。     

经济人的新解释与经济学的新发展

经济人假设是传统经济学理论大厦的基石。现代经济学前沿分支学科对经典经济人有三个不同方向的新解释 :一是对经典经济人的修修补补 ,使经济人更加贴近现实 ;二是坚持经典经济人 ,并进一步发展经济人的理性 ;三是抛弃经典经济人 ,研究理性和非理性行为结合的现实人。在对经济人新的不同解释的基础上 ,经济学与相关学科进一步融合 ,在学科交叉的边缘产生一系列新的经济学分支学科。     

经济学研究应该有哲学家的头脑--学习毛泽东《读社会主义政治经济学批注和谈话》杂记

毛泽东主张,经济学研究应该有哲学家的头脑,用辩证唯物主义和历史唯物主义来指导研究工作。经济学必须从生产力与生产关系、经济基础与上层建筑的矛盾运动中全面地研究生产关系,既研究组织经济关系,又研究社会经济关系。经济学的任务应该是透过表面现象来研究和揭示人们的经济关系。研究必须坚持一般规律与具体特点相结合这一方法论原则,既坚持一般原理,又研究其具体实现形式,两者不能偏废,更不能对立起来。毛泽东关于保守与变革关系的论述,闪烁着智慧的光芒,充满了辩证法,对社会主义的改革富有启迪。马克思主义政治经济学是阶级性与科学性统一的科学,我们研究任何一个经济问题,始终不能忘记“为了谁”这个根本问题。     

新疆全面建设小康社会评价分析

本文以全面建设小康社会的根本内涵为出发点,根据新疆现有的社会经济条件和发展水平,在充分调研的基础上,借鉴相关领域的理论与方法和实践成果,构建了与新疆实际相适应的全面建设小康社会的指标体系,并对我区全面建设小康社会的状况进行了客观评价分析,从而得出了新疆全面建设小康社会的重点。     

新时期兵团屯垦戍边历史使命的有效实现形式初探

在不同的历史时期，兵团担负的屯垦戍边历史使命的载体和实现形式是不相同的，探索21世纪兵团实现历史使命的实现形式是兵团完成新时期历史使命的重要前提。