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   432篇
  免费   20篇
各国政治   25篇
工人农民   43篇
世界政治   52篇
外交国际关系   14篇
法律   210篇
中国政治   15篇
政治理论   91篇
综合类   2篇
  2021年   3篇
  2020年   8篇
  2019年   7篇
  2018年   15篇
  2017年   13篇
  2016年   10篇
  2015年   13篇
  2014年   6篇
  2013年   64篇
  2012年   23篇
  2011年   12篇
  2010年   11篇
  2009年   12篇
  2008年   15篇
  2007年   12篇
  2006年   12篇
  2005年   13篇
  2004年   10篇
  2003年   13篇
  2002年   13篇
  2001年   9篇
  2000年   11篇
  1999年   8篇
  1998年   3篇
  1997年   7篇
  1996年   11篇
  1995年   4篇
  1994年   3篇
  1993年   4篇
  1991年   8篇
  1990年   8篇
  1989年   4篇
  1988年   6篇
  1987年   3篇
  1985年   7篇
  1984年   6篇
  1983年   7篇
  1982年   8篇
  1981年   4篇
  1980年   5篇
  1979年   6篇
  1978年   4篇
  1977年   3篇
  1976年   3篇
  1975年   4篇
  1974年   5篇
  1973年   2篇
  1969年   2篇
  1967年   3篇
  1966年   2篇
排序方式: 共有452条查询结果,搜索用时 15 毫秒
51.
Do protests sway public opinion? If so, why and how? To address these questions, we examine the impact of the 2006 immigration protests on immigration policy preferences. We use the 2006 Latino National Survey coupled with protest data to examine whether temporal and spatial exposure to the protests are associated with policy preferences. Our findings lend evidence that protest activity influences Latinos’ immigration policy preferences. However, the findings suggest the effect of protest on immigration policy preferences is not uniform across the population, but rather contingent on generational status and the intensity of protest activity at the local level.  相似文献   
52.
<正>Foreigners living in China agree that Chinese students of all ages are filial:very respectful to their family and elders.My friend Linda Liu explained to me that filial piety remains alive in modern China.This behavior is learned at a very early age,as children learn to read."A book,called The Classic of Filial Piety,dates back to some 2,000 years ago,"said Linda."This book offers outstanding behavioral examples to children."  相似文献   
53.
In Alabaster v. Barclays Bank plc and Secretary of State for Social Security (No. 2: [2005] E.W.C.A Civ. 508, [2005] I.R.L.R. 576.) Michelle Alabaster won a grand total of £204.53 (plus £65.86 interest) after eight years of litigation, which included two visits to the Court of Appeal and one to the European Court of Justice. This marathon resulted from the sex discrimination which Alabaster had alleged in relation to the calculation of her Statutory Maternity Pay (S.M.P.) whilst she was pregnant 10 years earlier. The technicalities of the statutory schemes involved should not be allowed to disguise the important principle which finally emerges in the Court of Appeal and which underlines one of the longstanding criticisms of the equality legislation, namely the requirement that a woman must compare herself with a man in order to establish unlawful sex discrimination.  相似文献   
54.
55.
56.
57.
58.
59.
60.
The specificity of antisera raised against each of the prostaglandin series 190H E1/E2 and 190H F1 alpha/F2 alpha, produced in males, was evaluated by radioimmunoassay. Further, the ability of these antisera to detect semen specific prostaglandins in mixtures of body fluids was examined. Antisera directed against the 190H E1/E2 series cross-reacted with prostaglandin E1 and marginally with E2. Antisera raised to the 190H F1 alpha/F2 alpha series were, however, highly specific to the semen specific prostaglandins 190H F1 alpha/F2 alpha and 190H E1/E2. It was possible to detect picogramme quantities of contaminating 190H F1 alpha/F2 alpha on vaginal swabs taken up to 72 h after intercourse and on vaginal swabs stored at room temperature for up to 2 years. These prostaglandins were not detected on semen free vaginal swabs, in faecal material, saliva, urine or in a sample of human milk (stain). A limited study of casework material is also described. Detection of the 190H F series, as a group, has considerable potential in the identification of human semen at picogramme levels, eliminating the need for alternative chemical tests and extensive microscopic examination.  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