苏联法影响中国法制发展进程之回顾

在 2 0世纪中国历史上 ,苏联的革命法制理论和若干重要制度曾深刻地影响了中国的法制发展进程。孙中山曾主张“以俄为师”并进行过法制改革 ;中国共产党所领导下的人民民主政权的法制建设也是以苏联为标尺 ;新中国成立初期在创立社会主义法制的过程中 ,更是将苏联法全方位地移植到了中国。苏联法制为中国革命政党所接受与其自身的性质和中国革命的需要紧密相关。     

大鼠急性心肌缺血再灌流损伤c-fos mRNA原位杂交实验研究

目的 探讨急性心肌缺血和/或再灌流早期不同时间不同区域心肌细胞内原癌基因c-fos mRNA表达变化,为心肌早期缺血死后诊断提供依据。方法 复制心肌早期缺血模型,大鼠分为正常、缺血及缺血再灌流组。采用原位杂交方法结合图像分析与统计学处理方法研究心肌细胞内c-fos mRNA表达情况。结果 缺血10min再灌流30min,部分大鼠再灌流区心肌细胞胞浆内c-fos mRNA弱阳性反应,散在分布。缺血60min再灌流30min时达高峰,120min开始减弱。正常和单纯缺血组中缺血少于60min组未见有阳性表达。HE染色无明显病理改变。结论 原位杂交法检测c-fos mRNA方法灵敏特异,有望成为一项急性心肌缺血/再灌流早期损伤的诊断指标。     

海洛因慢性依赖大鼠神经元一氧化氮合成酶变化

目的 研究海洛因药物滥用致脑神经细胞一氧化氮合成酶(ncNOS)表达的变化及法医学鉴定意义。方法 采用ncNOS免疫组织化学SP法、ncNOS mRNA原位分子杂交及图像分析技术,观察大鼠海洛因慢性依赖和自然戒断大脑皮质、中脑导水管周围灰质和中脑腹侧被盖区神经细胞ncNOS的变化和ncNOSmRNA的表达。结果 实验组神经细胞ncNOS含量和ncNOS mRNA表达比对照组明显增加,阳性细胞数明显增多;自然戒断组较慢性依赖组改变更加明显(P<0.05)。结论 ncNOS在海洛因慢性依赖和戒断中起重要作用,脑神经细胞ncNOS免疫组织化学变化可作为海洛因药物滥用法医学鉴定的形态学依据。     

科学还值得信赖吗?——对“科学是把双刃剑“的再反思

基于对人类本性的反思以及对人类生存处境的判断,尽管人类面临着种种新的生存危机,但是依然不能放弃对科学的信赖态度."科学是把双刃剑"这一看似有道理的说法,其实并非严谨的科学判断,值得人们对其进行深入反思.     

论现场勘查中的组织指挥意识

现场勘查,在刑事执法活动中具有较强的普遍性。现场勘查是在被动接报之后的主动"启动",是以"是否实施侦查、如何组织侦查"等作为其活动的实质目标指向。组织指挥者应当培养良好的现代现场勘查组织指挥意识———正确处理好轻重缓急关系的效率意识;正确协调技术与侦查的分合、兼容关系的全局意识;正确吃透现场看准个性的求真意识;正确对待相同点与差异点的辩证意识;正确处理好重点线索查证与整体侦查部署的统筹意识;正确处理好依靠大众传媒与封锁关键情节的双赢意识。     

Fingerprint pattern restoration by digital image processing techniques

Fingerprint evidence plays an important role in solving criminal problems. However, defective (lacking information needed for completeness) or contaminated (undesirable information included) fingerprint patterns make identifying and recognizing processes difficult. Unfortunately. this is the usual case. In the recognizing process (enhancement of patterns, or elimination of "false alarms" so that a fingerprint pattern can be searched in the Automated Fingerprint Identification System (AFIS)), chemical and physical techniques have been proposed to improve pattern legibility. In the identifying process, a fingerprint examiner can enhance contaminated (but not defective) fingerprint patterns under guidelines provided by the Scientific Working Group on Friction Ridge Analysis, Study and Technology (SWGFAST), the Scientific Working Group on Imaging Technology (SWGIT), and an AFIS working group within the National Institute of Justice. Recently, the image processing techniques have been successfully applied in forensic science. For example, we have applied image enhancement methods to improve the legibility of digital images such as fingerprints and vehicle plate numbers. In this paper, we propose a novel digital image restoration technique based on the AM (amplitude modulation)-FM (frequency modulation) reaction-diffusion method to restore defective or contaminated fingerprint patterns. This method shows its potential application to fingerprint pattern enhancement in the recognizing process (but not for the identifying process). Synthetic and real images are used to show the capability of the proposed method. The results of enhancing fingerprint patterns by the manual process and our method are evaluated and compared.