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   2911篇
  免费   13篇
各国政治   26篇
工人农民   35篇
世界政治   512篇
外交国际关系   87篇
法律   1988篇
中国共产党   22篇
中国政治   57篇
政治理论   180篇
综合类   17篇
  2020年   3篇
  2018年   3篇
  2016年   3篇
  2015年   3篇
  2014年   14篇
  2013年   6篇
  2012年   234篇
  2011年   228篇
  2010年   44篇
  2009年   30篇
  2008年   198篇
  2007年   211篇
  2006年   181篇
  2005年   193篇
  2004年   187篇
  2003年   194篇
  2002年   207篇
  2001年   145篇
  2000年   172篇
  1999年   61篇
  1998年   46篇
  1997年   31篇
  1996年   20篇
  1995年   37篇
  1994年   47篇
  1993年   48篇
  1992年   32篇
  1991年   31篇
  1990年   22篇
  1989年   15篇
  1988年   40篇
  1987年   16篇
  1986年   20篇
  1985年   24篇
  1984年   13篇
  1983年   19篇
  1982年   12篇
  1981年   23篇
  1980年   18篇
  1979年   13篇
  1978年   13篇
  1977年   13篇
  1976年   6篇
  1975年   6篇
  1974年   5篇
  1973年   6篇
  1964年   4篇
  1962年   3篇
  1961年   6篇
  1959年   3篇
排序方式: 共有2924条查询结果,搜索用时 15 毫秒
101.
102.
In light of the continuing spread of HIV infection and the devastating impact of the disease on lives, communities, and economies, particularly in the developing world, the investment in new treatments, vaccines, and microbicides has clearly been inadequate. Efforts must be intensified to develop effective HIV vaccines and to ensure that they are accessible to people in all parts of the world. This article is a summary of a paper by Sam Avrett presented at "Putting Third First: Vaccines, Access to Treatments and the Law," a satellite meeting held at Barcelona on 5 July 2002 and organized by the Canadian HIV/AIDS Legal Network, the AIDS Law Project, South Africa, and the Lawyers Collective HIV/AIDS Unit, India. In the article, Avrett calls for immediate action to increase commitment and funding for HIV vaccines, enhance public support and involvement, accelerate vaccine development, and plan for the eventual delivery of the vaccines. The article briefly outlines steps that governments need to take to implement each of these objectives. The article also provides a menu of potential actions for vaccine advocates to consider as they lobby governments.  相似文献   
103.
104.
105.
106.
Gupta S 《Time》2002,160(24):99
  相似文献   
107.
108.
The authors report on three autopsy cases in which the findings at the death scene gave rise to the suspect of non-natural, in two cases even violent causes of death. The medico-legal and criminalistic investigations led to surprising results: Death was due to acute intoxication with narcotics, supposed delirium tremens and a suicide attempt in the presence of bronchopneumonia. External force was ruled out in all three fatalities by cooperative work of police investigators and forensic medicine.  相似文献   
109.
On a wintry day a 29-year-old woman was found dead beside her car showing head injuries and signs of hypothermia. Several empty packets of sedative and hypnotic drugs were lying inside the car. Toxicological analysis revealed the presence of flunitrazepam (heart blood of the left and right chamber 0.033 mg/L each), norflunitrazepam (left heart blood 0.029 mg/L, right heart blood 0.027 mg/L), 7-amino-flunitrazepam (left heart blood 0.090 mg/L, right heart blood 0.104 mg/L), diazepam (left heart blood 0.395 mg/L, right heart blood 0.386 mg/L), nordazepam (left heart blood 0.112 mg/L, right heart blood 0.115 mg/L) and temazepam (left heart blood 0.034 mg/L, right heart blood 0.033 mg/L). Neither alcohol nor other drugs were found. It was concluded that benzodiazepine intake led to a disturbance of consciousness. Whether the woman died in this situation due to the icy temperature as a result of hypothermia or whether she died or would have died solely due to benzodiazepine overdosage could not be clarified.  相似文献   
110.
The article reports on the injury pattern seen in fatally wounded car passengers after rear-end collisions on motorways. The study material included 5 rear-end collisions, in which 9 car occupants (5 drivers and 4 front-seat passengers) were killed. The change in velocity (delta v) was above 60 km/h in all the reported cases. The injury pattern showed the following characteristics: extensive soft-tissue traumatization (subcutaneous haematomas, blood-filled pockets, "décollements") not discernible from outside on the back of the trunk, mostly in the lumbosacral region; dorsal serial rib fractures, often combined with fractures of the spine (including the sacrum and the coccyx) and/or the pelvis; ruptures of the aorta at the typical sites of predisposition; ruptures of the liver and spleen (particularly at the visceral surfaces).  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