首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   16624篇
  免费   447篇
各国政治   930篇
工人农民   703篇
世界政治   1035篇
外交国际关系   583篇
法律   10074篇
中国共产党   4篇
中国政治   98篇
政治理论   3510篇
综合类   134篇
  2020年   192篇
  2019年   240篇
  2018年   342篇
  2017年   390篇
  2016年   380篇
  2015年   267篇
  2014年   304篇
  2013年   1873篇
  2012年   385篇
  2011年   394篇
  2010年   356篇
  2009年   365篇
  2008年   442篇
  2007年   438篇
  2006年   476篇
  2005年   399篇
  2004年   393篇
  2003年   395篇
  2002年   380篇
  2001年   543篇
  2000年   497篇
  1999年   423篇
  1998年   228篇
  1997年   213篇
  1996年   188篇
  1995年   173篇
  1994年   181篇
  1993年   197篇
  1992年   305篇
  1991年   344篇
  1990年   336篇
  1989年   327篇
  1988年   319篇
  1987年   352篇
  1986年   334篇
  1985年   326篇
  1984年   296篇
  1983年   287篇
  1982年   190篇
  1981年   201篇
  1980年   153篇
  1979年   237篇
  1978年   165篇
  1977年   158篇
  1976年   122篇
  1975年   145篇
  1974年   153篇
  1973年   154篇
  1972年   120篇
  1971年   96篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
992.
993.
994.
995.
996.
An investigation was carried out on the effect of the intake of diazepam and alcohol on simple performance tests. The combined administration of diazepam and alcohol led to an increase of the plasma diazepam concentration as compared to that obtained after diazepam without alcohol. Furthermore, after combined intake of diazepam and alcohol a decrease of performance was observed, that was significantly higher, than the effects obtained after either alcohol or diazepam alone. This impairment was especially noticeable duirng the first hour of the experiment, i.e. until the plateau of the diazepam plasma concentration was reached, while afterwards a correlation between diazepam plasma concentration and impairment of performance could not be established. The relevance of these findings for the interpretation of diazepam plasma concentrations in relation to the impairment of performance are discussed.  相似文献   
997.
998.
In response to Nagin's comment on our paper, Methodological Sensitivities to Latent Class Analysis of Long-Term Criminal Trajectories, we reconsider the robustness and validity of group-based approaches to criminal trajectories and introduce additional issues for future research. We emphasize the limitations of typological approaches and the dangers of reifying the idea of distinct offender groupings for research and policy. We also clarify misunderstandings about the use of hierarchical linear models for studying trajectories of crime. Our basic conclusion is that methods in criminology need to be more tightly linked with theory.  相似文献   
999.
Not even forensic pathologists were spared by the anti-Jewish laws of the Third Reich. Fritz Strassmann and Paul Fraenckel were among more than 140 faculty of the Berlin Department of Medicine persecuted by the national socialist dictatorship. It was because of their Jewish background that Georg Strassmann was expelled from university in Breslau, and Leone Lattes was forced to leave in Pavia. Miklós Nyiszli was deported from Oradea to Auschwitz and forced to perform forensic autopsies. Stefan Jellinek in Vienna, Ludwik Hirszfeld in Warsaw and Friedrich Schiff in Berlin were other medical professionals whose achievements had enriched legal medicine before they became victims of anti-Jewish persecution.  相似文献   
1000.
Over the past 100 years forensic research in neurotraumatology was focusing on the genesis, e.g. biomechanis, and the origin of epidural, subdural, subarachnoidal, intracerebral and brain stem haemorrhage, particularly under aspects to enable the differential diagnosis of bleeding due to non-traumatic diseases. Moreover the estimation of the age of brain injuries has important criminological implications (survival time following traumatic forces to the head, alibi etc.). Beside these main fields of research, aspects of expertise in special areas such as head trauma due to child abuse, capability to act despite severe brain injuries and research on cervical trauma are reviewed.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号