全文获取类型
收费全文 | 1188篇 |
免费 | 56篇 |
专业分类
各国政治 | 101篇 |
工人农民 | 67篇 |
世界政治 | 117篇 |
外交国际关系 | 74篇 |
法律 | 568篇 |
中国共产党 | 1篇 |
中国政治 | 5篇 |
政治理论 | 306篇 |
综合类 | 5篇 |
出版年
2023年 | 15篇 |
2022年 | 12篇 |
2021年 | 9篇 |
2020年 | 34篇 |
2019年 | 38篇 |
2018年 | 54篇 |
2017年 | 68篇 |
2016年 | 69篇 |
2015年 | 52篇 |
2014年 | 54篇 |
2013年 | 200篇 |
2012年 | 57篇 |
2011年 | 56篇 |
2010年 | 53篇 |
2009年 | 54篇 |
2008年 | 57篇 |
2007年 | 65篇 |
2006年 | 35篇 |
2005年 | 36篇 |
2004年 | 33篇 |
2003年 | 28篇 |
2002年 | 18篇 |
2001年 | 29篇 |
2000年 | 20篇 |
1999年 | 8篇 |
1998年 | 11篇 |
1997年 | 8篇 |
1996年 | 5篇 |
1995年 | 4篇 |
1994年 | 3篇 |
1993年 | 4篇 |
1991年 | 2篇 |
1988年 | 3篇 |
1987年 | 5篇 |
1984年 | 2篇 |
1983年 | 3篇 |
1982年 | 3篇 |
1981年 | 10篇 |
1980年 | 5篇 |
1978年 | 4篇 |
1968年 | 1篇 |
1967年 | 1篇 |
1966年 | 1篇 |
1965年 | 1篇 |
1963年 | 2篇 |
1962年 | 1篇 |
1961年 | 2篇 |
1958年 | 1篇 |
1957年 | 1篇 |
1956年 | 1篇 |
排序方式: 共有1244条查询结果,搜索用时 359 毫秒
111.
112.
A case of fatal myocarditis in a 24-year-old otherwise healthy man is described. It was possible to cultivate Salmonella typhimurium from the alimentary tract, the blood, the liver and skeletal muscles. The possibility of a solitary myocarditis with fatal outcome due to Salmonella typhimurium infection is discussed. Such a case seems not to have been mentioned previously in the literature.The problems concerning the statistical registration of such a death are briefly discussed. 相似文献
113.
Jackowski C Bolliger S Aghayev E Christe A Kilchoer T Aebi B Périnat T Dirnhofer R Thali MJ 《Journal of forensic sciences》2006,51(5):1134-1137
Postmortem investigation is increasingly supported by computed tomography (CT) and magnetic resonance imaging, in which postmortem minimal invasive angiography has become important. The newly introduced approach using an aqueous contrast agent solution provided excellent vessel visualization but was suspected to possibly cause tissue edema artifacts in histological investigations. The aim of this study was to investigate on a porcine heart model whether it is possible to influence the contrast agent distribution within the soft tissue by changing its viscosity by dissolving the contrast agent in polyethylene glycol (PEG) as a matrix medium. High-resolution CT scans after injection showed that viscosities above c. 15 mPa s (65% PEG) prevented a contrast agent distribution within the capillary bed of the left ventricular myocardium. Thereby, the precondition of edema artifacts could be reduced. Its minimal invasive application on human corpses needs to be further adapted as the flow resistance is expected to differ between different tissues. 相似文献
114.
Correlation of age and ossification of the medial clavicular epiphysis using computed tomography 总被引:4,自引:0,他引:4
Schulze D Rother U Fuhrmann A Richel S Faulmann G Heiland M 《Forensic science international》2006,158(2-3):184-189
OBJECT: The aim of this study was the examination of relationship between the age and the ossification of medial epiphysis of the clavicle referred to CT examination. MATERIALS AND METHODS: Concerning the epiphyseal ossification of the clavicle CT's of 100 patients (50 male and 50 female) between 16 and 25 years (10 patients for each year) were analyzed by three viewers. RESULTS: In the legal relevant age segment (16-25a) we saw a turnover from stage 3 to stage 4 at the age of 21 years. The calculated empiric distribution function showed 95% of stage 4 over 21 years while 75% of the patients with stage 3 were under 21 years. A reconstruction kernel suitable for osseous structures should be used, images should be viewed or presented in a bone window. CONCLUSION: According to these results it can be concluded that a person with stage 4 is probably 21 years or older, while a stage 3 leads to an estimated age under 21 years. On the other hand, a confidence level of 99.67% is not reached. Therefore, CT of the medial epiphysis of the clavicle will only be suitable for age estimation around the age of 21 years, if this relevant statistic obstacle is defeated. Bearing this in mind, further studies are needed to evaluate slice thickness as the most critical parameter. 相似文献
115.
116.
Jens Peter Frølund Thomsen 《Scandinavian political studies》2012,35(2):159-178
As European majority members are often hostile toward ethnic minorities, it is important to identify sources that reduce opposition to immigrants. First, focusing on Denmark, this article examines whether intergroup contact influences attitudes toward ethnic minority rights (henceforth: ‘ethnic tolerance’). Second, this study tests whether the contact‐tolerance relationship is mediated by self‐disclosure and symbolic threat. Furthermore, contact is measured as workplace contact in order to reduce self‐selection biases. The empirical tests are performed on a Danish high‐quality national probability sample from 2009 (N = 1,929). Analysis shows that intergroup contact generates ethnic tolerance because workplace contact weakens threat perceptions and stimulates disclosure of personal information. Generally, these results suggest that regular intergroup contact can improve ethnic relations in contemporary democracies. 相似文献
117.
Résumé: La judiciarisation de l’action publique demeure un champ de recherche peu exploré par les politologues suisses. Cette note de recherche étudie dès lors l’évolution des 79’752 affaires liquidées par le Tribunal fédéral, de 1990 à 2010, en matière administrative. Les résultats empiriques montrent que le contentieux administratif croît de 45% sur la période observée, principalement en matière d’assurances sociales. Nous observons toutefois des différences notables entre les domaines de politiques publiques et quant à la provenance cantonale des recours devant le Tribunal fédéral. Ces différences s’expliquent par l’influence conjointe de facteurs conjoncturels (par ex. la croissance économique), institutionnels (par ex. l’organisation judiciaire cantonale) et liés aux acteurs du système judiciaire (par ex. la densité d’avocats). En conclusion de cette analyse exploratoire, cinq pistes de recherche sont identifiées afin d’étudier plus finement l’ampleur du processus de judiciarisation et d’en évaluer les impacts sur les politiques publiques. 相似文献
118.
The intervertebral haemorrhages described by Simon in 1968 as a vital sign of hanging have been verified and endorsed by other authors. They occur in 40-50 % of hanging cases, most frequently in the lumbar spine, in younger age groups, and in cases of free suspension. The haemorrhages are not unique to hanging, but may occur in particular as a result of other traumatic elongation or overextension of the spinal column (e. g. in the course of traffic accidents). In cases of decomposition of the body, "false positive" findings are relatively common. As external findings scarcely provide any reliable vital signs of hanging, there is still a high demand for autopsies. In addition to Simon's bleedings, internal findings which are diagnostically conclusive also include microscopic examinations of the lungs and the neck musculature. More recent findings such as haemorrhages in the back and auxiliary respiratory muscles as well as the intestinal wall, if confirmed, could supplement Simon's bleedings. Frei's fibre sample and evidence of histamine in the ligature mark should not be neglected. Finally, it must be emphasized that the forensic assessment of hanging cases should always be based on a criminological and forensic evaluation of all the circumstances of the offence as well as on post-mortem findings. 相似文献
119.
引航,旧称引水、领港、领江,是指在一定的引航区域内(港口或内河),专门性的从业人员(即引航员)登上船舶,为船舶指引航向,把船舶安全地引进、带出港口或在港内移泊。引航是一种资源,具有公益性和主权性。引航的目的不是为了盈利,而是提供公共服务。由于港口的航道条件构成了一个国家的天然屏障,事关一国的国防,因而按照国际惯例,引航员必须由本国人担任,并且对出入港口的外国籍船舶实行强制引航。这是一个国家引航权的体现,是国家主权的一部分。本文针对我国引航体制改革,结合国际相关立法,对我国引航法律制度所涉及引航管理体制模式、引航机构资质管理、引航员资质管理以及引航作业中法律责任加以研究。 相似文献
120.