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   8159篇
  免费   522篇
各国政治   427篇
工人农民   274篇
世界政治   621篇
外交国际关系   310篇
法律   5561篇
中国政治   34篇
政治理论   1419篇
综合类   35篇
  2023年   50篇
  2021年   60篇
  2020年   194篇
  2019年   211篇
  2018年   248篇
  2017年   268篇
  2016年   268篇
  2015年   232篇
  2014年   236篇
  2013年   906篇
  2012年   203篇
  2011年   207篇
  2010年   225篇
  2009年   241篇
  2008年   194篇
  2007年   189篇
  2006年   199篇
  2005年   186篇
  2004年   206篇
  2003年   186篇
  2002年   159篇
  2001年   332篇
  2000年   281篇
  1999年   233篇
  1998年   104篇
  1997年   68篇
  1996年   73篇
  1995年   84篇
  1994年   96篇
  1993年   95篇
  1992年   158篇
  1991年   163篇
  1990年   150篇
  1989年   159篇
  1988年   127篇
  1987年   143篇
  1986年   126篇
  1985年   134篇
  1984年   103篇
  1983年   118篇
  1982年   86篇
  1981年   79篇
  1980年   59篇
  1979年   114篇
  1978年   74篇
  1977年   60篇
  1976年   50篇
  1975年   48篇
  1974年   55篇
  1973年   62篇
排序方式: 共有8681条查询结果,搜索用时 15 毫秒
941.
942.
943.
This paper reports the case of a 22-year-old white male who was found dead in a storage room as a result of a fatal ingestion of cyclopropane. Cyclopropane is a sweet-smelling, irritating gas. Autopsy findings revealed congestion and hemorrhagic edema of the lungs, congestion of the trachea, and early autolysis. Cyclopropane was determined by headspace gas chromatography and mass spectrometry. To our knowledge, this is the first reported fatality involving cyclopropane.  相似文献   
944.
945.
In the course of a scuffle, a youth of 18 years was struck a single blow across the chest with a golf club. He collapsed dead on the spot. At autopsy, a precisely located and highly distinctive patterned imprint abrasion of the precordial region was revealed providing an excellent match with the weapon. The heart showed multiple internal ruptures and there was a laceration of the lingula of the left lung. Injury to the chest wall was confined to the soft tissues, the rib cage and sternum being intact. We postulate a novel mechanism to explain the cardiac rupture.  相似文献   
946.
As part of a transcultural investigation of violent behavior in Denmark and South America, the lesions from accidents involving deliberate violence registered in three Danish emergency wards during a 1-year period were studied. A quantity of 2211 lesions were diagnosed in 1316 patients (953 male and 363 female patients). Sixty-five percent of the lesions were in the head/neck region, 13% in truncus, 18% in the upper extremities and 5% in the lower extremities. The most frequent diagnosis was an open wound in the head/neck region. Adding contusions and fractures in the same region this amounted to more than half of the total number of lesions. In the upper extremities 62% of the lesions were contusions or open wounds. Serious lesions of internal arteries were few, however always caused by sharp instruments (knives). Serious lesions due to firearms were not recorded/reported. Strangulation had been used against 1.1% of the victims, the male/female ratio being 1:6. The main part of the lesions were of minor severity when assessed on the basis of the scores in the Abbreviated Injury Scale (AIS). The lesions were, however, more serious compared to other recent studies, and it appeared that the female victims had fewer but more serious lesions than the male victims. The need for treatment and hospitalization was in the range of other recent studies.  相似文献   
947.
948.
949.
As part of an European-South American study of deliberate violence cases of violence against women greater than or equal to 15 years of age and violence against and among children under the age of 15 years were registered at 3 Danish emergency wards and at the Institute of Forensic Medicine in Copenhagen. 352 cases of violence against women and 46 cases of violence against children were registered in the three emergency wards corresponding to rates of about 1.6/1000 per year for women, 0.6/1000 per year for boys and 0.7/1000 per year for girls in a provincial/rural district, the catchment region of Holbaek County Hospital, 3.4/1000 per year for women, 2.8/1000 per year for boys and 0.6/1000 per year for girls in a mainly middle income area of the metropolis Copenhagen, the catchment region of Frederiksberg Hospital, and 4.0/1000 per year for women, 4.0/1000 per year for boys and 0.9/1000 per year for girls in a mainly low income area of Copenhagen, the catchment region of the Rigshospital. Nineteen live adult female victims and 17 dead adult female victims of violence were registered in the Institute of Forensic Medicine in Copenhagen, where also one was registered as a victim of homicide. Nearly half of the adult live female victims of violence had been injured at home while this was the case for approximately three fourth of the dead victims. In 35% of the live cases the husband was the aggressor and in 12% a former cohabitant. In 71% of the homicide cases the husband was the aggressor. The live women appeared to have fewer but more serious lesions than men. The pattern of deliberate violence against women appears to be associated with socio-economic and cultural factors. In cases with a preceding quarrel there is statistically a link to alcohol intoxication. In half of the cases of violence against children the aggressor was known to the victim, in 15% the aggressor was one of the parents, while 42% of the cases were violence among children. The pattern of violence according to sex, and the distribution and severity of lesions for 10-14 years old children showed resemblance to the situation for adults. The lesions were more serious in young infant victims, especially boys, than in adult victims.  相似文献   
950.
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