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   14095篇
  免费   1309篇
各国政治   564篇
工人农民   438篇
世界政治   1069篇
外交国际关系   456篇
法律   9997篇
中国共产党   1篇
中国政治   100篇
政治理论   2684篇
综合类   95篇
  2020年   366篇
  2019年   371篇
  2018年   434篇
  2017年   510篇
  2016年   524篇
  2015年   471篇
  2014年   459篇
  2013年   1586篇
  2012年   308篇
  2011年   412篇
  2010年   584篇
  2009年   541篇
  2008年   342篇
  2007年   304篇
  2006年   429篇
  2005年   303篇
  2004年   309篇
  2003年   297篇
  2002年   268篇
  2001年   492篇
  2000年   389篇
  1999年   334篇
  1998年   198篇
  1997年   172篇
  1996年   139篇
  1995年   183篇
  1994年   184篇
  1993年   159篇
  1992年   251篇
  1991年   269篇
  1990年   255篇
  1989年   272篇
  1988年   247篇
  1987年   217篇
  1986年   245篇
  1985年   255篇
  1984年   259篇
  1983年   219篇
  1982年   179篇
  1981年   154篇
  1980年   152篇
  1979年   177篇
  1978年   119篇
  1977年   104篇
  1976年   91篇
  1975年   84篇
  1974年   103篇
  1973年   80篇
  1972年   65篇
  1971年   64篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
32.
33.
34.
This article considers the claim in the government's White Paper, Justice for All , to put victims and witnesses at the heart of the criminal justice system and argues that there is an unresolved tension within the paper between instrumentalist crime control concerns and intrinsic concerns for the rights of victims and witnesses. It is argued that many of the proposals now contained in the latest Criminal Justice Bill are so preoccupied with rebalancing the system away from offenders that they risk doing injustice to defendants with little tangible benefit to victims and witnesses in terms of rights and remedies.  相似文献   
35.
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   
36.
37.
38.
The results of additional validation studies of a sensitive microplate hemagglutination assay for ABO reverse grouping of bloodstains are presented. The results of the validation study demonstrate the reliability of the microplate assay for use in routine serological casework. Based on these studies, the microplate assay has now replaced the Lattes crust test for ABO reverse grouping of bloodstains in the FBI Laboratory.  相似文献   
39.
40.
Blood previously acidified with aqueous saturated ammonium chloride solution was extracted with ethyl acetate. The dried extract was subjected to acetonitrile–hexane partition. The acetonitrile portion was analysed for the presence of acidic and neutral drugs by HPLC–DAD (200 mm×2.1 mm I.D. microbore ODS-Hypersil column) and GC–FID (25 m narrow-bore×0.25 mm I.D. HP-5 column with 0.33 μm film thickness). The protocol was found to be suitable for both clinical toxicology (including emergency toxicology) and postmortem toxicology. At least 66 drugs of interest were unequivocally identified by RRTs (HPLC) and UV spectra (DAD) match while another 12 were unequivocally identified by double RRTs match (HPLC and GC). Quantitation was facilitated by incorporating calibration blood standards in each assay batch. The five drugs most commonly encountered in clinical blood specimens (1150 cases) were: paracetamol (47.4% of the cases); chlormezanone (6.6%), theophylline (1.74%), naproxen (1.65%) and mefenamic acid (1.56%). The following drugs were detected in toxicologically significant quantities in postmortem blood specimens (245 cases): phenobarbitone (1.22% of the cases), naproxen (0.82%), chlormezanone (0.82%), theophylline (0.82%), carbamazepine (0.41%) and paracetamol (0.41%).  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