High performance liquid chromatographic determination of alcohols with reference to body distribution of methanol

A method has been developed on reverse phase high performance liquid chromatography for simultaneous determination of methyl, ethyl and isopropyl alcohols under refractive index detection using pure water as the mobile phase. A good separation has been achieved between these alcohols. Detector response was linear with a detection limit of 5 mg/100 ml. Recovery studies were performed by adding known amounts of methyl and ethyl alcohols to blood, lung and liver within the range 80–90%. The reproducibility of the results was always >90%. The quantitative distribution of methyl alcohol in postmortem body tissues and fluids has been reported in three cases of poisoning.     

The effect of board size and composition on European bank performance

Banks are “special” financial institutions generating distinct corporate governance challenges. The present paper examines the relationship between two of the most pertinent corporate governance factors—that is, the size of the Board of Directors and the proportion of non-executive directors—and firm performance on a sample of 58 large European banks over the period 2002–2004. The empirical analysis embraces a number of bank-specific variables. Our results reveal that bank profitability is negatively related to the size of the Board of Directors, while the impact of Board composition, although positive in all models, is, in most cases, insignificant. The results are robust after controlling for firm-specific variables.      

民国山西警政建设研究

民国山西警政建设经历了四个发展阶段,每一阶段都有其发展特点和重点,并在管理体制、警察教育、乡村警政建设、警察的职能等方面有一定特色,这些都对现代警政建设有重要的借鉴价值。     

中美警务技能战术教学训练之比较

加强中美警察在警务技能战术教学训练的研究,对中美警察警务技能与战术的课程设置、教学内容及训练方法、教官队伍建设等多方面加以比较,提出学习美国警察在警务技能战术教学训练方面先进的经验和做法,以促进我国警察在技能战术教学训练方面的发展     

Acidic and neutral drugs screen in blood with quantitation using microbore high-performance liquid chromatography–diode array detection and capillary gas chromatography–flame ionization detection

Blood previously acidified with aqueous saturated ammonium chloride solution was extracted with ethyl acetate. The dried extract was subjected to acetonitrile–hexane partition. The acetonitrile portion was analysed for the presence of acidic and neutral drugs by HPLC–DAD (200 mm×2.1 mm I.D. microbore ODS-Hypersil column) and GC–FID (25 m narrow-bore×0.25 mm I.D. HP-5 column with 0.33 μm film thickness). The protocol was found to be suitable for both clinical toxicology (including emergency toxicology) and postmortem toxicology. At least 66 drugs of interest were unequivocally identified by RRTs (HPLC) and UV spectra (DAD) match while another 12 were unequivocally identified by double RRTs match (HPLC and GC). Quantitation was facilitated by incorporating calibration blood standards in each assay batch. The five drugs most commonly encountered in clinical blood specimens (1150 cases) were: paracetamol (47.4% of the cases); chlormezanone (6.6%), theophylline (1.74%), naproxen (1.65%) and mefenamic acid (1.56%). The following drugs were detected in toxicologically significant quantities in postmortem blood specimens (245 cases): phenobarbitone (1.22% of the cases), naproxen (0.82%), chlormezanone (0.82%), theophylline (0.82%), carbamazepine (0.41%) and paracetamol (0.41%).     

试谈努力探索公安基层基础工作新机制

不断探索公安基层基础工作新机制 ,加强公安基层基础工作 ,以适应市场经济发展特别是入世后对公安工作的要求 ,具有十分重要的意义。怀化市各级公安机关进一步解放思想 ,更新观念 ,与时俱进 ,大胆探索 ,开创出了一条公安基层基础工作的新思路 ,在全市城乡普遍推行民情社情警务图管理 ,较好地服务了经济建设 ,取得了显著成效。     

警务化管理与学生的个性发展--由毕业生写给母校的一封信引发的思考

某省公安院校一位毕业生写信给母校 ,指责学校警务化管理体制抑制了学生的个性发展。其实只要从素质教育理念出发 ,警务化管理与学生个性发展并不矛盾 ,它与学生的个性发展可以并行不悖。抑制学生个性发展的呼声实际上是公安院校就业难的侧面反映。     

构建警察信用——对我国目前警察信用状况的探讨

诚实信用是社会道德的基石。警察活动中可以有条件地允许利诱 ,有限制地使用带有欺骗性要素的侦查谋略。但警察行为具有一种社会示范作用 ,若侦查谋略使用不当 ,可能损害公民仅利 ,损害社会善良风俗 ,而且也会损害刑事司法效益甚至整个国家的信用体系。因此 ,警察信用原则应该在警察活动中得到贯彻实施。     

稳压电源性能测试仪研制

针对线性稳压电源的性能指标测试过程繁琐、测量结果不理想等问题，我们采用单片机技术实现了全自动测量，将测量中所需的自耦调压器、滑线变阻器、各种测量仪表（交流电压表、精密直流电压表、精密电流表、交流毫伏表）分别设计成智能仪表，自动输出和测量稳压电源需要的工频信号和输出的电压、电流信号，同时进行指标的计算，实时显示稳压电源的性能指标，根据需要可由微型打印机输出测量结果。     

监狱人民警察的心理障碍及其调适

监狱人民警察的心理障碍是由心理征候集合而表现出的心理病变状态.监狱人民警察产生心理障碍的因素包括:工作劳累导致"心累";任务繁重,工作压力大;社会不理解,遭人非议;人际关系紧张、冲突;家庭成员的不理解、埋怨等.监狱人民警察的心理调适,是运用心理学的理论和方法,进行科学地有效调整,使监狱人民警察保持积极向上的健康的心理状态的过程.对监狱人民警察中出现的心理失衡现象,其克服的方法和途径主要有自我心理调适;家庭的心理调适;监狱领导机关对监狱人民警察的心理保健措施.