A new method for detecting diatoms in human organs

A new method for diatom detection is described. It includes an ultrasonic irradiation procedure with the use of a tissue solubilizer. The method is easy to carry out and is less time-consuming than previous techniques.     

A screening method for urinary methamphetamine--latex agglutination inhibition reaction test

Methamphetamine in urine samples from abusers was detected by the latex agglutination inhibition reaction test with latex-antibody (Latex-Ab) and latex-methamphetamine (Latex-MA) reagents. Anti-methamphetamine antibody was produced in rabbits by immunization with bovine serum albumin (BSA)-methamphetamine conjugate. Latex particles were coated with antibodies or with rabbit serum albumin (RSA)-methamphetamine conjugate to obtain Latex-Ab and Latex-MA reagents, respectively. The results are read at 4-5 min after mixing the latex reagents. The sensitivity of this method for methamphetamine was 0.4 micrograms/ml urine. Methamphetamine analogs (methylephedrine, amphetamine, phentermine, methoxyphenamine, ephedrine, beta-phenylethylamine, OH-methamphetamine, OH-amphetamine, and OH-ephedrine) all cross-react in varying degrees, while glucosiurea and albuminurea give false positive results in the tests. Though attention must be paid to these effects this simple and rapid test is suitable for the mass screening of urine samples.     

疑难案件及其侦查审讯

疑难案件有其自身的表现形式,它的形成主要是因为犯罪嫌疑人拒绝供述自己所犯的罪行,同时也因为侦查主体在认定犯罪时证据不足。新形势下在对疑难案件的审讯中,应当研究犯罪嫌疑人的拒供心理,应当重视"党的领导、群众路线"的中国公安特色,应当提倡侦查审讯的措施和手段的出新其中,主要是掌握辨证的思维方法,科学地开展刑事侦查活动。     

警察院校擒拿格斗课学生受伤情况调查分析

擒拿格斗课程是警察院校各专业学生的必修课,其教学目标是使学生学会抓捕技巧和培养实战格斗能力。由于受到自然气候、训练场地、器材、学生身体素质、心理素质、教师教学方法、教学态度等因素的影响,在此过程中不可避免会出现学生受伤事件。建议设立专门的医疗机构、事故责任认定机构加强管理,通过学校、教研室、教师、学生的共同努力以减少隐患,为学生完成任务创造条件。