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   889篇
  免费   57篇
各国政治   75篇
工人农民   89篇
世界政治   82篇
外交国际关系   50篇
法律   465篇
中国共产党   1篇
中国政治   6篇
政治理论   176篇
综合类   2篇
  2024年   1篇
  2023年   9篇
  2022年   5篇
  2021年   9篇
  2020年   31篇
  2019年   39篇
  2018年   55篇
  2017年   60篇
  2016年   57篇
  2015年   32篇
  2014年   51篇
  2013年   150篇
  2012年   33篇
  2011年   40篇
  2010年   35篇
  2009年   32篇
  2008年   24篇
  2007年   30篇
  2006年   24篇
  2005年   36篇
  2004年   25篇
  2003年   35篇
  2002年   27篇
  2001年   10篇
  2000年   9篇
  1999年   4篇
  1998年   7篇
  1997年   7篇
  1996年   9篇
  1995年   9篇
  1994年   3篇
  1993年   5篇
  1992年   3篇
  1991年   5篇
  1990年   3篇
  1989年   2篇
  1988年   5篇
  1987年   9篇
  1986年   1篇
  1985年   2篇
  1984年   4篇
  1983年   3篇
  1980年   2篇
  1979年   2篇
  1978年   1篇
  1976年   1篇
排序方式: 共有946条查询结果,搜索用时 0 毫秒
61.
Diabetes mellitus is a chronic metabolic illness responsible for a great number of deaths. In postmortem diagnosis, because of the difficulty involved in interpreting blood glucose levels and relatively nonspecific pathologic features, biochemical markers in vitreous humor are useful. The aim of this study was to compare the results obtained for the combined determination of lactate and glucose with fructosamine levels recorded in the vitreous humor of two diagnostic groups (one diabetic and the other nondiabetic). The authors intended to ascertain the capacity of different markers measured in vitreous humor to diagnose diabetes mellitus. Fifty-one cadavers (mean age, 58.7 years; standard deviation, 17.09) were studied. The mean postmortem interval was 16.4 hours (standard deviation, 9.05). Cases were assigned to two diagnostic groups according to whether they were previously diagnosed as either diabetic or nondiabetic. Statistically significant differences for glucose, fructosamine, and the sum values of glucose and lactate were found between the two diagnostic groups. The highest levels were obtained in the group of cases with a previous diagnosis of diabetes mellitus. After the comparison of receiver operating characteristic curves, the sum values of glucose and lactate in vitreous humor is a better predictor of antemortem diabetes mellitus than the fructosamine.  相似文献   
62.
63.
Editor's Note: The Perspectives featured in this issue of Public Administration Review were adapted from May 2016 commencement addresses: Anna Maria Chavez, the CEO of the Girl Scouts of the USA, spoke on the 12th at Arizona State University's College of Public Service and Community Solutions; Nancy Pelosi, the Democratic Leader in the United States House of Representatives spoke on the 7th at New York University's Wagner School of Public Service; and Tommy Thompson, the former Governor of Wisconsin and Secretary of Health & Human Services, spoke on the 15th at the University of Wisconsin's La Follette School of Public Affairs. These Perspectives reaffirm the highest principles of American public administration: that by and large, government is NOT the problem, and quite often indeed holds the solution; that effective and helpful public policy depends on informed expert opinion and research; and that those who enter public service should do so with a commitment to the notion that America best fulfills its promise when we seek the well‐being of all people, including the least fortunate. We chose these messages from among a wealth of commencement speeches because while they come from leaders with quite different political views, background, and experience, taken together they offer a coherent and inspiring call to public service. Dan Feldman, Perspective and Commentary Editor  相似文献   
64.
65.
66.
67.
68.
Horizontal mergers can be challenged by anti trust authorities under both the US and EU Horizontal Merger Guidelines. More horizontal mergers are unconditionally approved in the US than in the EU. EU merger policy toughened after 1998 but became more in line with US practices after 2004. Differences in merger policies between the US and the EU can be explained by a greater scope of the efficiency argument in the US. The paper argues that firms only want to merge in oligopoly, if they expect to realize substantial merger specific efficiency gains, which counterbalances the price increasing effect of merger.   相似文献   
69.
70.
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