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   12370篇
  免费   410篇
各国政治   523篇
工人农民   459篇
世界政治   857篇
外交国际关系   420篇
法律   7500篇
中国政治   76篇
政治理论   2831篇
综合类   114篇
  2020年   165篇
  2019年   222篇
  2018年   263篇
  2017年   328篇
  2016年   305篇
  2015年   225篇
  2014年   248篇
  2013年   1174篇
  2012年   293篇
  2011年   336篇
  2010年   276篇
  2009年   334篇
  2008年   342篇
  2007年   338篇
  2006年   323篇
  2005年   298篇
  2004年   288篇
  2003年   286篇
  2002年   287篇
  2001年   457篇
  2000年   396篇
  1999年   322篇
  1998年   186篇
  1997年   136篇
  1996年   154篇
  1995年   157篇
  1994年   148篇
  1993年   148篇
  1992年   247篇
  1991年   273篇
  1990年   253篇
  1989年   258篇
  1988年   237篇
  1987年   234篇
  1986年   280篇
  1985年   271篇
  1984年   238篇
  1983年   218篇
  1982年   166篇
  1981年   133篇
  1980年   127篇
  1979年   159篇
  1978年   89篇
  1977年   115篇
  1976年   97篇
  1975年   73篇
  1974年   91篇
  1973年   86篇
  1972年   82篇
  1971年   71篇
排序方式: 共有10000条查询结果,搜索用时 125 毫秒
101.
102.
Postmortem examination of a former professional basketball player revealed an abnormal heart, most notably a single coronary artery. The literature on single coronary arteries is briefly reviewed, and the possible mechanism which caused the patient's condition is considered. This case is particularly unusual because of the patient's profession, which is so physically demanding.  相似文献   
103.
This article explores theoretical and empirical issues in the application of clinical neuropsychological evidence to forensic issues in the criminal law. The nature of forensic neuropsychological evaluations is discussed with reference to issues of competency to stand trial, criminal responsibility, and other competencies in the criminal process. Examples of specific disorders relevant to criminal law standards are presented, together with data estimating the prevalence of brain dysfunction in criminal and forensic populations. Research is also reviewed on the role of neuropsychological brain dysfunction in the etiology of violence and criminally relevant behavior. Finally, empirical and ethical issues concerning the applicability and admissibility of forensic neuropsychological data in the criminal context are discussed.  相似文献   
104.
105.
Technology policies and their effect on technology transfer from defense to civilian industries in Israel from 1967 to 1995 are explored. Defense technology policy is found to drive the growth of the defense industry and to limit defense conversion to commercialization initiatives developed primarily through intra-organizational technology transfer. The case of the Israel Aircraft Industries (IAI) is presented. Also the development of national technology policy in Israel is traced and found wanting. Civilian and defense technology policies are found to be uncoordinated with each other and together are incapable of producing interorganizational technology transfer so as to significantly effect defense conversion on a wide number of economic actors particularly small firms. To achieve a socially effective defense conversion process (in which technologies are transferred from defense firms to many economic actors), the analysis suggests that a national technology policy should be designed and implemented under Prime Minister's leadership.  相似文献   
106.
107.
Law and Philosophy -  相似文献   
108.
109.
110.
Quadratic pieces of fleece measuring 16 mm2 were soaked with 10 different blood-samples in the dilution steps of 1:1, 1:10, 1:100, 1:1000, respectively, and were tested in blood group typing and identification tests of forensic serology. The above spezified dilutions correspond with 5 microliters, 0.5 microliter, 0.05 microliter and 0.005 microliter of blood, respectively. The detection limit of the microspectrometric test for blood was the dilution 1:10, of the porphyrine test a dilution above 1:100, whereas the preliminary test for blood (peroxidase) succeeded always up to a dilution of 1:1000 and the species determination by the radial immunodiffusion test in agar gels succeeded in most cases op to a dilution of 1:1000. The detection limit of the anti-human globulin inhibition test was between the dilution steps 1:10 and 1:100 when non-titrated and undiluted anti-human globulin serum was used. Gc- and ABO-grouping were possible up to a dilution of 1:100 and were thus the most sensitive grouping systems. Phenotyping of the enzyme-systems and the Gm/Km-system usually required stains with considerably higher blood concentrations i.e. stains of undiluted blood.  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