大鼠脑震荡后c-jun蛋白表达变化

目的观察实验性大鼠脑震荡后c-jun蛋白的表达变化规律,探索脑震荡后法医病理学的诊断指标。方法将55只大鼠随机分为脑震荡组和对照组。用免疫组织化学SABC法观察大鼠脑震荡后脑内c-jun蛋白表达变化的规律。结果对照组大鼠可见c-jun蛋白的弱阳性表达。脑震荡组损伤后15min可在神经元观察到c-jun蛋白的表达,随着损伤后经过时间的延长,表达c-jun蛋白的细胞数及范围逐渐扩大,损伤后3h表达达高峰。结论c-jun蛋白的检测可作为诊断脑震荡和推断脑震荡后经过时间的一项敏感指标。     

重庆地区汉族未成年人牙龄推断的研究

目的运用牙齿曲面断层影像技术,研究6周岁～15周岁重庆市未成年人牙齿钙化的规律,从而建立根据牙齿钙化程度推断年龄的方法。方法依据牙齿钙化分级标准对1321名（男性577名,女性744名）重庆市6周岁～15周岁未成年人牙齿曲面断层片上的牙齿钙化程度进行分级评分;将评分值与对应的性别和年龄分别输入SPSS13.0软件进行统计分析,最终建立推断年龄的方程。结果左右侧同名牙齿钙化程度无统计学差异（P〉0.05）,但性别间有统计学差异（P〈0.05）;下颌左右侧8颗牙齿的钙化程度与年龄相关系数均大于0.58;所建利用不同牙齿组合推断年龄的线性回归模型调整拟合优度均大于0.67,估计值标准误男性为0.95周岁～1.11周岁、女性为1.02周岁～1.12周岁。结论该方法可用于法庭科学领域中推断重庆市6周岁～15周岁未成年人活体以及尸体的年龄。     

The Reliability of Chronological Age Determination by Means of Mandibular Third Molar Development in Subjects in Croatia*

Abstract: The aim of this study was to determine the development of the mandibular third molar and its relation to chronological age. The evaluated material consisted of 979 orthopantomograms of patients of Croatian Caucasian origin aged between 5.7 and 14.6 years. Third molar developmental stages were evaluated according to the stages proposed by Nolla. The frequencies of different stages of mineralization and the mean value of the mineralization of the mandibular third molars with regard to age, gender, and size of the mandible were determined and the coefficient of correlation determined between the age of the subject and the stage of development of the mandibular molars. Statistically significant correlation was determined between mineralization of the mandibular third molar and chronological age of the subjects (boys, mandibular left third molar r = 0.779, right third molar r = 0.793; girls, mandibular left third molar r = 0.746, right third molar r = 0.725). It can be concluded that the accuracy of age estimation based on Nolla’s method is applicable for Croatian children.     

c-jun在组织损伤中的表达变化及其法医学意义

c-jun原癌基因是即刻早期基因jun家族成员之一,属于碱性亮氨酸拉链家族核内转录因子成员,可以结合在许多基因的启动子上参与基因转录的调控,其表达产物在多种基因表达、细胞增殖、分化、凋亡等过程中起重要作用。本文就c-jun的结构、生物学功能、调控方式及其在组织损伤中的作用进行综述,旨在进一步对组织损伤程度和伤后时间推断的法医学研究提供参考资料。     

网络时代物权原则的确立

互联网络基于其自身的特殊性,已经对物权法制产生了许多重要影响,其中,尤为突出的是它动摇了物权法定原则存在的合理性基础,使意思自治能够全面在物权法领域得以贯彻.然而关于网络对物权法乃至民法的影响,基本上没有引起学者的注意.因此,在我国目前正在准备起草制定物权法和民法典时,深入研究互联网络对物权法和民法的影响,不仅对丰富和发展物权法和民法理论具有重要意义,而且也对物权法和民法典的制定具有重要的现实意义.     

对当代问题大学生个性缺陷的若干思考

对当代大学生培养目标的研究 ,不应当停留在抽象的口号提倡或者机械的字义解释的层面上 ,应当把将当代大学生培养成为头脑有主见、行为有道德、肩膀有责任、腹中有才干、眼睛有乾坤、胸中有理想 ,脚踏实地 ,可以让党放心、让政府放心、让社会放心、让大学放心、让用人单位放心、让家庭放心的社会主义接班人作为具体的培养目标 ,然而 ,当代大学生中的一些人所存在的个性缺陷 ,却对这种培养目标的实现构成了冲击 ,因此 ,对当代大学生中的一些人所存在的个性缺陷的表现形式、原因及其矫正的策略进行研究 ,不但具有理论意义 ,还具有现实的意义。     

Regime Age and Terrorism: Are New Democracies Prone to Terrorism?

One of the earlier empirical studies of the relationship between regime type and terrorism published in International Interactions determined that while established democracies were significantly less likely to experience terrorist attacks than were nondemocratic countries, newly established democracies were highly vulnerable to terrorism. Subsequent empirical studies have routinely controlled for both regime type and age, but scholarly understanding of the effect of regime longevity on terrorism remains underdeveloped. This study revisits the relationship between terrorism and regime type and regime age using updated data, analytical techniques, and time-series and finds that while young democracies experience more terrorism than older democracies, dictatorships of any age experience less terrorism than any other type of regime.     

Relationship Between Pulp Tooth Area Ratio and Chronological Age Using Cone‐beam Computed Tomography Images

This study investigated the relationship between chronological age and pulp tooth area ratio (PTR) in maxillary central teeth using cone‐beam computed tomography (CBCT) images in the Turkish population. The sample consisted of CBCT images of 120 male and female subjects between 14 and 75 years old. The PTR of the maxillary central teeth was calculated using inVivo 5 software (Anatomage, San Jose, CA). Data were analyzed with independent t‐test and Pearson's rank correlation test. There was a significant negative correlation between chronological age and PTR (r = ?0.615). The results showed that the PTR of maxillary central teeth is a reliable method for age estimation in the Turkish population.     

Differential Identification of Three Young Housefire Victims: Methods when Age Assessment Fails

Multiple fatality incidents involving more than one child of statistically same age (including twins) can be challenging from an identification standpoint. This case details an urban fire, in which four children perished. Age assessment on three of the victims utilizing maturity staging described by Moorrees, Fanning, and Hunt yielded insignificant results. However, a plot of the MFH data shows the difference between two identical twins and a third child. The twins share a similar growth pattern, whereas the other was different. Based on this graphical interpretation, the nontwin victim was positively identified through exclusion. These results were verified through statistical testing. This case demonstrates a method to repurpose age assessment data to graphically distinguish between child victims. Further, it is shown that radiographic and clinical presentation in childhood identical twins can elicit genetic versus acquired similarities and differences, which can be used for identification of individuals and exclusion of others.