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   24533篇
  免费   1423篇
  国内免费   4篇
各国政治   988篇
工人农民   1084篇
世界政治   1730篇
外交国际关系   866篇
法律   16456篇
中国共产党   69篇
中国政治   251篇
政治理论   4215篇
综合类   301篇
  2023年   119篇
  2021年   148篇
  2020年   526篇
  2019年   567篇
  2018年   726篇
  2017年   764篇
  2016年   841篇
  2015年   628篇
  2014年   709篇
  2013年   2508篇
  2012年   680篇
  2011年   737篇
  2010年   743篇
  2009年   758篇
  2008年   735篇
  2007年   760篇
  2006年   766篇
  2005年   643篇
  2004年   616篇
  2003年   565篇
  2002年   571篇
  2001年   918篇
  2000年   846篇
  1999年   653篇
  1998年   315篇
  1997年   238篇
  1996年   271篇
  1995年   253篇
  1994年   244篇
  1993年   238篇
  1992年   433篇
  1991年   439篇
  1990年   407篇
  1989年   403篇
  1988年   420篇
  1987年   389篇
  1986年   432篇
  1985年   435篇
  1984年   344篇
  1983年   342篇
  1982年   263篇
  1981年   234篇
  1980年   204篇
  1979年   298篇
  1978年   181篇
  1977年   147篇
  1976年   125篇
  1975年   131篇
  1974年   176篇
  1973年   139篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
Acute myoglobinuria as a fatal complication of heroin addiction   总被引:3,自引:0,他引:3  
A fatal case of myoglobinuria complicating heroin addiction is described. Clinically the patient had no overt symptoms of rhabdomyolysis. Pathologists should be alerted to this rare complication in heroin addicts who die of no apparent cause. The antimyoglobin immunoperoxidase technique is useful in confirming the diagnosis.  相似文献   
32.
The lungs of 79 children who had died between the ages of 1 week and 2 years old were histologically examined. 59 of these children could be categorized as cases of Sudden Infant Death because of the history and postmortem findings. In the remaining 20 cases a definite cause of death could be established. This is the same collective on which the histological investigations of the lymphatic tissue has been carried out. Morphological changes which are typical for a virus pneumonia were found in a substantially higher frequency in the cases of Sudden Infant Death than in the control cases. The validity of these findings and their possible significance for the cause of death are discussed.  相似文献   
33.
The conventional wisdom in criminology is that adult onset of offending is a rare event. Closer examination of the extant literature that use official records, however, reveals that an average of 50 percent of adult offenders initiate offending at age eighteen or older. Although criminological research has investigated late onset offending in adolescence, there is little research on adult onset offending and the correlates of adult offending. Using police contact and interview data from the 1942 and 1949 birth cohort data from Racine, WI, this study investigated the correlates of crime for adult onset and persistent offenders. The results show that employment is the only correlate to affect the probability of adult offending differently for previously delinquent and nondelinquent offenders. This article concludes by highlighting the neglect of research on adult offenders, specifically the large percentage of adult onset offenders, and calling for more research on this topic.  相似文献   
34.
轻型颅脑损伤ABR的纵向研究   总被引:3,自引:0,他引:3  
目的 探索轻型颅脑损伤的电生理学指标 ,为早期临床诊断和预后判断以及法医学活体伤害鉴定提供依据。 方法 对相关病例进行脑干诱发电位 (ABR)的动态观察 ,并对结果进行统计学分析。 结果 6 0例轻型颅脑损伤患者伤后 48小时ABR的检测 ,显示主要异常表现为I-III峰间潜伏期的延长 ,说明此类损伤可造成脑干的功能紊乱。同时通过对其中 40例进行ABR追踪检测 ,结果显示大部分患者受伤三个月后脑功能状态恢复正常。 结论 轻型颅脑损伤ABR变化具有一定的特征 ,提示可作为早期临床诊断和预后判断以及法医学活体伤害鉴定的客观依据 ,应引起关注并展开进一步研究。  相似文献   
35.
36.
37.
38.
Fibres used in forensic casework suffer from a disadvantage common to other forms of trace evidence--it is not possible to state with absolute certainty that they originate from a specific source. Target fibre studies, population studies and research on 'blocks of colour' have effectively demonstrated the polymorphism of textile fibres (particularly man-made ones) and have shown that when a fibre is believed to have a specific putative source, the chance that it has originated from a different source purely by coincidence is extremely remote. A study by Houck MM (Houck MM, Inter-comparison of unrelated fibre evidence. Forensic Science International 2003; 135: 146-149) has shown that no coincidental matching fibres were recovered from items of clothing examined in 20 unrelated crimes. The study involved over two million comparisons. This work goes a step further, and using the example of blue polyester fibres shows that even within a very narrow segment of the whole general fibre population, many examples of a specific colour/type of man-made fibre taken from random sources can be compared and the chance of any two being the same is very low. These studies should help to show the specificity and value of transferred fibres in providing forensic evidence.  相似文献   
39.
40.
Book Reviews in This Article:
Robert Jay Lifton, The Nazi Doctors: Medical Killing and the Psychology of Genocide.
Eric Stovcr and Elena O. Nightingak, eds., The Breaking of Bodies and Minds: Torture, Psychiatric Abuse and the Health Professions.
Elliot S. Valenstein, Great and Desperate Cures: The Rise and Decline of Psychosurgery and Other Related Treatments for Mental Illness.  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