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   11211篇
  免费   314篇
各国政治   421篇
工人农民   398篇
世界政治   754篇
外交国际关系   316篇
法律   7022篇
中国政治   75篇
政治理论   2433篇
综合类   106篇
  2020年   115篇
  2019年   166篇
  2018年   200篇
  2017年   234篇
  2016年   232篇
  2015年   173篇
  2014年   198篇
  2013年   1037篇
  2012年   235篇
  2011年   289篇
  2010年   233篇
  2009年   287篇
  2008年   299篇
  2007年   287篇
  2006年   289篇
  2005年   258篇
  2004年   252篇
  2003年   261篇
  2002年   256篇
  2001年   432篇
  2000年   379篇
  1999年   306篇
  1998年   171篇
  1997年   130篇
  1996年   146篇
  1995年   139篇
  1994年   140篇
  1993年   144篇
  1992年   246篇
  1991年   256篇
  1990年   251篇
  1989年   258篇
  1988年   229篇
  1987年   229篇
  1986年   272篇
  1985年   264篇
  1984年   241篇
  1983年   219篇
  1982年   160篇
  1981年   133篇
  1980年   120篇
  1979年   156篇
  1978年   88篇
  1977年   117篇
  1976年   97篇
  1975年   75篇
  1974年   90篇
  1973年   86篇
  1972年   81篇
  1971年   71篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
941.
N,N-diethyl-m-toluamide (DEET) levels in postmortem specimens of stomach and contents, blood, liver, and urine are reported following ingestion of the compound. DEET was analyzed by gas chromatography with an OV-101 column and a nitrogen phosphorus detector. The presence of the compound in the four postmortem specimens was confirmed by mass spectrometry.  相似文献   
942.
943.
944.
945.
946.
A case of spontaneous bacterial peritonitis is reported. A methodical postmortem examination failed to disclose cirrhosis or other liver pathology; nor, was any anatomic alteration of the immune system noted. Acquired immunodeficiency syndrome was likewise discounted. A discussion ensues concerning recognition of this entity.  相似文献   
947.
948.
The azygos vein ascends along the thoracic spine through the mediastinum and drains into the superior vena cava at the level of the fourth thoracic vertebra. Fracture-dislocation of the mid-thoracic spine, as a result of blunt thoracic trauma, can tear the azygos vein. Four such fatal cases (three motor vehicle accidents and one fall) were studied, only one of which was recognized prior to death. The vein can also be torn, in the absence of skeletal injuries, by horizontal acceleration/deceleration forces. The pathologist must consider azygos vein laceration as a possible cause of either hemothorax or hemomediastinum or both in a victim of a blunt chest trauma, if that individual had persistent hypotension during the few hours before death and no identifiable source of hemorrhage can be found postmortem in sites such as the heart, great vessels, lung, and chest wall. A fracture-dislocation of the thoracic spine may not necessarily be present. Azygos vein laceration seems to be an uncommon cause of hemothorax and hemomediastinum; however, this injury is probably more frequent than is implied by the few cases described in the medical literature.  相似文献   
949.
Historically, disease scares reveal contradictions in the social order. We postulate that courts focus on depoliticizing social tensions revealed by AIDS, legitimating the routines of dominant parties in the AIDS sociolegal network. At the same time, courts deviate from their normal practices try upholding the claims of subordinate parties in this network, particularly people living with AIDS (PWAs) and their allies. Our analysis of 36 AlDS-related court rulings, published during the formative years of AIDS litigation in the United States, supports the notion that courts operate as "double-edged" institutions. To explain the duality of judicial decision making, we concentrate on the powers of social and cultural factors rather than on the doctrinal judgments of the courts. We trace how relational attributes, evident in contestants' characteristics (e.g., plaintiff/defendant, status differentials) and the nature of claims (i.e., restrictive/expansive), combine to account for wins for dominant parties and how other combinations of these attributes define wins for subordinate parties. We also show how judges combine specific interpretational attributes in the text of their rulings (e.g., use of divisive AIDS metaphors, deference to medical authority) to justify wins. We consolidate these findings to discuss how PWAs and their allies might use the courts to their advantage and point out the ways in which the changing epidemiology of AIDS in the United States limits the use of courts.  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