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排序方式: 共有119条查询结果,搜索用时 15 毫秒
91.
组织细胞DNA含量变化与死亡时间的相关性研究 总被引:5,自引:1,他引:4
目的研究人死后各器官组织细胞DNA降解变化规律,探讨其在推断死亡时间方面的应用价值,为推断死亡时间提供科学依据。方法已知死亡时间人尸体的心、肝、脾、肾,按死后6,12,24和48h四个时间段取材,制成石蜡切片,经Feulgen染色并图像分析;同时将各器官组织按不同时间段取材,制成单细胞悬液,应用流式细胞仪检测DNA含量。结果(1)人体各器官组织细胞经FCM检测,脾细胞核DNA随死亡时间延长呈现较好的下降梯度,而心、肝、肾,则由于自溶较快,死后6h细胞核DNA含量已很低,其变化情况与死亡时间的相关性不佳;(2)各器官组织细胞核DNA染色强度指数均随死亡时间的延长而下降。结论(1)机体死亡后,各器官组织细胞核DNA含量随死亡时间延长逐渐减少,具有一定的变化规律,其中以脾细胞核DNA含量的变化趋势与死亡时间最具相关性,肝、肾次之,而心最差;(2)方法学分析,图像分析技术(IAT)与流式细胞术(FCM)两种检测方法在研究组织细胞DNA含量变化方面,各有利弊,可互补不足。 相似文献
92.
潘石 《中共长春市委党校学报》2002,(5):74-78
上市公司的发展和壮大为长春市地方经济的发展提供了有效的资本支持,加快了长春市经济结构的合理调整和优化组合,对长春市经济持续,快速和健康发展起到了重大作用。具体表现在:上市公司进入证券市场,拓宽了融资渠道,以上市公司为龙头,带动相关行业的腾飞。通过资本流动,加快了经济结构的调整,通过产权交易,转换了经营机制,提高了管理水平等。 相似文献
93.
94.
Improvements in information and communication technologies have reshaped production and consumption relations during the post-modern era. Societies have tried to adapt themselves to the requirements of new knowledge-based economy. It has also become vital for the organizations to meet the needs of knowledge society. Whether they are public or private, organizations play key roles in the transformation processes of the societies and economies. It is important for the organizations not only to use the latest information technologies, but also create social structures, which can ease information flow throughout the organization. Social network studies that are quite different from traditional approaches in sociology can be very useful tools to understand arid manipulate organizational networks. The results of several research activities have shown that actors use their social connections to reach information, resources and possible opportunities (Garguilo & Benassi, 2000). It is not enough to use advanced information technologies in an organization to build an effective knowledge distribution system regarding the social network perspective, it is required to understand the patterns of social interactions between actors and to find a fit between technical structure and social structure for effective knowledge-based organizational design. Structural holes theory (Butt, 1992) emphasized the importance of brokerage roles of the actors in a social network. Structural holes are unconnected actors (individuals, groups or organizations) in a social network (Burt, 1992). If there are numerous structural holes in an organization, there will also be quite a number of brokerage opportunities for some actors in the organizational networks. Brokers are the bridges and gatekeepers who are controlling information flow in the organizations. It is vitally important to explore brokerage patterns in an organizational network for an effective knowledge based design. This study is a conceptual framework aiming at bringing an explanation to socially created information flow structures in the organizations by using structural holes theory. 相似文献
95.
D J Williams 《The journal of forensic psychiatry & psychology》2017,28(1):24-37
Although it has been suggested among both forensic experts and a small number of leisure scientists that serial murder may be a form of recreational leisure, such suggestions remain largely unexplored both theoretically and empirically. Given the absence of scholarship on this possibility, this project explored and analyzed the structure and function of leisure activities within an unusual case (Dennis Rader) of serial murder. A thorough analysis of relevant case documents confirmed that serial murder itself can be experienced by the killer as a form of recreational leisure with the potential for optimal psychological experience (flow), and that various leisure activities may function in specific ways within the serial murder process. An unexpected finding in this case was that leisure, specifically project-based leisure, served to structure specific killings. Findings provide valuable new insights for forensics behavioral experts that may be used to guide future research. 相似文献
96.
Chiara Samele Norman Urquía Karen Slade Andrew Forrester 《The journal of forensic psychiatry & psychology》2017,28(4):548-561
Police and court liaison and diversion services provide important specialist mental health input along critical stages of the criminal justice pathway. Effective sharing of information between the services and relevant justice agencies is essential. However, various problems exist with the flow of information between agencies and services across the criminal justice pathway. This service evaluation explored how clinically relevant information is transferred, by drawing on the perspectives of prison health care staff in a large urban UK male prison. A qualitative service evaluation was conducted using semi-structured interviews with a purposive sample of 11 prison staff. The main themes included: gaps in the transfer of essential information, (particularly concerning risk and offending information); information gathering to fill these gaps; the importance of professional relationships, information sharing between agencies; and information solutions. Improving information transfer across the criminal justice pathway could prevent treatment delays and ensure more timely mental health care in prison. 相似文献
97.
20世纪中叶新马华人社会与华南互动之探讨 总被引:1,自引:0,他引:1
本文着重探讨新马华人社会的社会群体及经济组织在新马及华南的互动中所扮演的角色及依赖的基础,希望弥补以往研究新马华人社会与华南侨乡互动时只注重实际交往的不足,而进一步探讨这一实际交往的基础即无形的信息流动。另一方面,跨国社会联系又是建立在国家的基础上,因此希望能在探讨跨国社会网络的同时也回到国家层面,进一步揭示国家在网络发展中所起的作用。 相似文献
98.
Park CS Jeon SW Lee KJ Kim JS Oh JG Park JC Lee HS Choi YS 《Journal of forensic sciences》2012,57(4):1108-1113
This case report describes a noncontact traffic accident involving a motor scooter and a tractor-trailer with a focus on the wind-drag effect. We used load cells to measure the drag force acting on a substantially similar motor scooter when a substantially similar tractor-trailer passes by it, taking into consideration various speeds of the tractor-trailer and distances between the two vehicles. A three-dimensional steady-state flow analysis was also performed by using the CFX program for computational fluid dynamics to examine the streamlines and the pressure distribution around the tractor-trailer at various speeds. From the experiment, for a separation distance of 1.0 m (3.28 ft) and a speed of 90 km/h (55.9 mph), the maximum resultant drag force is 124.5 N (28 lb); this constitutes a degree of force that could abruptly disrupt the stability in maneuvering by an operator who is unaware of the approaching tractor-trailer. In addition, a single equation that relates the tractor-trailer speed to the drag force that acts on the motor scooter was derived on the basis of the Reynolds number (Re) and the wind-drag coefficient (C(d)): C(d) = 1.298 × 10(-7) Re. 相似文献
99.
Cloud computing is an information technology technique that promises greater efficiency and reduced-cost to consumers, businesses and public institutions. However, to the extent it has brought better efficiency and minimal cost, the emergence of cloud computing has posed a significant regulatory challenge on the application of data protection rules particularly on the regime regulating cross-border data flow. The Data Protection Directive (DPD), which dates back to 1995, is at odds with some of the basic technological and business-related features of the cloud. As a result, it is claimed that the Directive hardly offers any help in using the legal bases to ‘process’ and ‘transfer’ data as well as to determine when a transfer to a third country occurs in cloud computing. Despite such assertions, the paper argues that the ECJ's Bodil Lindqvist decision can to a certain extent help to delineate circumstances where transfer should and should not occur in the cloud. Concomitantly, the paper demonstrates that controllers can still make the most of the available possibilities in justifying their ‘processing’ as well as ‘transferring’ of data to a third country in cloud arrangements. In doing so, the paper also portrays the challenges that arise down the road. All legal perspectives are largely drawn from EU level though examples are given from member states and other jurisdictions when relevant. 相似文献
100.
本文是以云南省为个案,对人才分布及其流动的公共部门化现象的实证研究。人才作为第一资源,在市场经济条件下的配置,首要和主要的,应是面向经济、走向市场,进入经济实体。但目前我国情况并非如此,尤其是在欠发达地区,人才分布和流动的公共部门化是一种普遍的现象。这种现象如果不能有效改变,将对我国的经济发展与市场经济体制的巩固产生重大的消极影响。 相似文献