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   7179篇
  免费   222篇
各国政治   365篇
工人农民   292篇
世界政治   561篇
外交国际关系   264篇
法律   4220篇
中国政治   40篇
政治理论   1586篇
综合类   73篇
  2020年   88篇
  2019年   113篇
  2018年   160篇
  2017年   154篇
  2016年   152篇
  2015年   111篇
  2014年   117篇
  2013年   798篇
  2012年   158篇
  2011年   176篇
  2010年   161篇
  2009年   163篇
  2008年   167篇
  2007年   169篇
  2006年   193篇
  2005年   160篇
  2004年   156篇
  2003年   169篇
  2002年   168篇
  2001年   224篇
  2000年   188篇
  1999年   166篇
  1998年   104篇
  1997年   104篇
  1996年   79篇
  1995年   83篇
  1994年   79篇
  1993年   87篇
  1992年   126篇
  1991年   153篇
  1990年   133篇
  1989年   149篇
  1988年   135篇
  1987年   156篇
  1986年   141篇
  1985年   152篇
  1984年   138篇
  1983年   143篇
  1982年   108篇
  1981年   95篇
  1980年   107篇
  1979年   96篇
  1978年   77篇
  1977年   65篇
  1976年   69篇
  1975年   63篇
  1974年   69篇
  1973年   72篇
  1972年   55篇
  1969年   57篇
排序方式: 共有7401条查询结果,搜索用时 15 毫秒
21.
22.
North American research on the policing of ‘domestic violence’ has been very influential among policy makers in Great Britain. In particular, research which purports to verify the deterrence value of arrest has prompted the establishment of over thirty domestic violence units in London and similar initiatives elsewhere in Britain. The paper will outline the nature of the traditional police response to ‘family violence’ in London and the nature of the experimental innovations. Changes in police practice with regard to this type of violence will be put in the context of the organizational constraints and possibilities of policing. Finally, changing police responses to domestic violence will be evaluated in terms of the debate over the possibility of using the state or its organs to achieve social change.  相似文献   
23.
24.
A fatality following ingestion of the drug baclofen (Lioresal) is described. Baclofen was identified in urine by gas chromatography/mass spectrometry. After derivatization with trinitrobenzene sulfonic acid, baclofen was quantitated in serum and urine by high-performance liquid chromatography. The concentration of baclofen was 17 mg/L in serum and 760 mg/L in urine collected approximately 12 h after the overdose. To our knowledge, this is only the second reported fatality involving a baclofen overdose. The previous case did not include quantitation of baclofen in any biological fluid.  相似文献   
25.
26.
27.
28.
29.
Correlation between plasma and bone marrow tricyclic antidepressants has not been studied before. Two groups of rabbits were given 10 and 20 mg of desipramine/kg body weight, respectively. Desipramine was administered to the animals once daily by mouth for 5 days. On the fifth day the animals were sacrificed and blood and bone marrow samples were collected and analyzed using a high performance liquid chromatographic (HPLC) method. Data showed that a correlation exists between bone marrow and blood desipramine. The bone marrow desipramine concentration increased as its blood levels increased. The average ratio of bone marrow to blood desipramine +/- S.D. (standard deviation) in both dosage groups was 37.2 +/- 4.46 with a range of 30.99-44.82. This investigation is promising and shows that bone marrow could be used as an alternative tissue in the absence of a suitable blood sample.  相似文献   
30.
The Green River Murder Investigation in King County, Washington, is currently the longest active serial murder investigation in U.S. history. During its course, over 26 separate scenes with from one to five victims each have been processed. The experience of the authors is presented in order to acquaint other agencies with techniques of outdoor scene processing that have evolved during recovery of remains from Green River and other skeletal cases.  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