用SEM观察真皮浅层微小刺伤的研究

本文报道了一种用酶水解表皮与真皮的连接,然后用扫描电镜观察微小损伤在真皮乳头层的损伤特点的新方法。研究结果表明,这种方法有利于微小刺伤的鉴定,并提供一些具体的鉴定指标。     

枪弹创后置物射出口形态学的实验研究

为建立后置物射出口与射入口的检验鉴定方法，使用国产五四式7．62mm口径手枪及五六式7．62mm口径半自动步枪，以5米的距离射击约克夏种白猪18只，同时以木板、水泥板、玻璃及衣服等作为射出口衬垫物，制成后置物射出口56例，并与对照组12例射出口进行对比观察。结果表明，射出口与后置物距离在3cm以内均可出现创缘伸展轮及皮下出血，且与后置物质地及距离成正比。根据其形态分为典型及非典型两类，并建立了此类射出口的检验方法及其与射入口鉴别的依据，有助于法医在实际检验中对射击方向的判断。     

线粒体DNA在年龄推断中的应用

线粒体是机体ATP产生的场所,近年来研究发现线粒体DNA(MitochondrialDNA)的损伤程度会随着年龄的增长而增加。深入研究并将mtDNA的损伤程度应用在法医学软组织的年龄推断中将有重要意义。     

男性青少年左右侧骨骺愈合推断年龄的差异

目的比较左右侧骨骺愈合差异对推断年龄的影响。方法观察130名男性青少年全身六大关节及骨盆X线片上27个骨骺愈合指标,比较左右侧骨骺愈合程度有差异的部位及级别;左右两侧分别用多元回归方程推算年龄,做比较分析。结果76例左右侧推算年龄一致,47例左、右侧差值小于0.5岁,7例差值在0.50～1.0岁之间,94.6%左右侧推算年龄误差在0.5岁内。左右骨骺愈合差异多见于肱骨近端、桡骨远端、尺骨远端、髂嵴。结论左右愈合度的细微差异对年龄推断无统计学意义。左右骨骺愈合差别不存在一侧的偏向性。     

降钙素基因相关肽的研究及在法医病理学中的应用

降钙素基因相关肽(CGRP)参与了人体许多重要的生理、病理过程。近年来研究发现在某些疾病的发病和损伤修复中CGRP也发挥重要作用。深入研究并应用CGRP对临床诊治和法医检案都具有重要意义。     

血细胞线粒体DNA4977缺失与年龄的相关性

目的检测不同年龄组人活体血细胞线粒体DNA4977碱基缺失情况及其与年龄的相关性。方法根据Anderson标准序列设计mtDNA恒定区和mtDNA4977特异缺失区引物,采用实时荧光定量PCR技术,对110份不同年龄组人活体血细胞mtDNA4977缺失水平进行检测。结果在23岁以下个体中未检出mtDNA4977缺失,在大于23岁的被检个体中检测到mtDNA4977缺失,年龄越大,越容易检测到缺失。结论人mtDNA4977缺失与年龄有一定的相关性。     

深化高等教育改革迎接新经济时代到来

新经济时代的到来,给我国高等教育提出了新的更高的要求.高等教育要适应新经济时代的发展,必须改革我国计划经济时期的教育体制,贯彻"教育要面向现代化、面向世界、面向未来"的改革方针;同时要抓好教学改革,要在拓宽专业口径、改革教学内容和教学方法上下工夫.     

Employment,age, race,and crime: A labor theoretic investigation

The fundamental objective of this paper has been to reinvestigate the relationship between employment and crime, while taking account of deterrence, age and race effects. The data, a sample of Brooklyn arrestees, was collected by the Vera Institute of Justice simply to explore, with individual data, the relationship between employment and crime. In this research, a labor theoretic formulation is used incorporating a model that views the problem as one of rational choice between legitimate work and participation in crime. Factors affecting the diminution of crime participation with age are investigated. Changes at age 18 in economic opportunities and in deterrence effects from moving from juvenile to adult status are found to have a significant impact on crime participation. The results are important because they tend to confirm with official crime report data, results found in earlier studies using self-report data, i.e., (1) when the process is appropriately modeled, previous contacts with police are found to cause some experimenters with crime to become desisters, (2) prior work experience and economic opportunities tend to reinforce this tendency to desist, (3) even though blacks are found to have a greater prevalence of involvement in crime, when the data are standardized for all of the aforementioned factors and educational attainment, there is no significant difference between blacks and whites in their tendency to recidivate.     

Predicting risk for early police arrest

A model designed to predict early arrest is presented. Family process variables were hypothesized to be indirectly related; a childhood measure of an antisocial trait was assumed to be directly related to risk for early onset. Longitudinal data were collected for two cohorts of families living in high-crime areas of a mediumsized metropolitan area. Multiagent/multimethod definitions for both the family process and the antisocial trait concepts defined the latent constructs. Official records of police contacts were collected during the ensuing 5 years. The data for the hazard rates showed that risk for police arrest varied significantly as a function of the child's age. A continuous time regression analysis showed that most of the individual family process constructs and the antisocial trait construct were significantly related to an altered risk for police contacts. A multiple regression analysis showed a similar effect in predicting age at onset. In keeping with the hypotheses in both analyses, when all variables were entered simultaneously the contributions of the family process constructs were nonsignificant; only the contributions for the trait score and social disadvantage remained significant. The more antisocial the child, the greater the risk for early arrest.     

关于变异型刺创形成机制的研究附380例刺创分析

本文通过380例刺杀案中823个创口的分类统计分析,结合动物实验,研究了单刃、双刃、三棱、四棱四种刺器造成变异型刺创的形成机制。并对刺创的检验方法进行了探讨。