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   8943篇
  免费   219篇
各国政治   671篇
工人农民   335篇
世界政治   521篇
外交国际关系   355篇
法律   5527篇
中国共产党   7篇
中国政治   50篇
政治理论   1639篇
综合类   57篇
  2020年   109篇
  2019年   125篇
  2018年   221篇
  2017年   235篇
  2016年   255篇
  2015年   195篇
  2014年   187篇
  2013年   919篇
  2012年   211篇
  2011年   215篇
  2010年   208篇
  2009年   224篇
  2008年   281篇
  2007年   310篇
  2006年   329篇
  2005年   221篇
  2004年   208篇
  2003年   211篇
  2002年   196篇
  2001年   316篇
  2000年   282篇
  1999年   248篇
  1998年   108篇
  1997年   87篇
  1996年   79篇
  1995年   68篇
  1994年   82篇
  1993年   68篇
  1992年   128篇
  1991年   168篇
  1990年   161篇
  1989年   151篇
  1988年   156篇
  1987年   175篇
  1986年   167篇
  1985年   155篇
  1984年   134篇
  1983年   127篇
  1982年   84篇
  1981年   99篇
  1980年   69篇
  1979年   131篇
  1978年   89篇
  1977年   74篇
  1976年   56篇
  1975年   81篇
  1974年   86篇
  1973年   83篇
  1972年   58篇
  1971年   57篇
排序方式: 共有9162条查询结果,搜索用时 15 毫秒
51.
Presented in this paper are the initial results involving the use of the nose or outer ear as temperature measurement sites to determine the postmortem period of the human corpse. Simple mathematical models for both sites are developed based on cooling curves of five corpses. Analysis of errors between actual and calculated postmortem intervals suggest that in its present form, the described methods would not be suitable for use in accurately determining the time since death of human corpses.  相似文献   
52.
53.
54.
Observations of high velocity bloodspatter on adjacent objects   总被引:1,自引:0,他引:1  
In a recent homicide investigation, high velocity backspatter was observed on the sleeve cuff of the accused. These minute droplets were discovered only after microscopic examination and were limited in number. A study was initiated to determine if these were truly backspatter droplets or transferred blood produced from light contact with a bloody item. It was observed that the backspattered blood was primarily limited to contact or near contact shots. An exception was a shot into an already bloody surface. It was found that backspattered blood would deposit on the shooter's shirt sleeve irrespective of the weave pattern. Transferred blood was observed only on the fiber tops. This information was found to be useful in reconstruction of events in suicides as well as possible homicides.  相似文献   
55.
56.
Book Reviews in This Article:
Getting Rid of Patients: Contradictions in the Socialization of Physicians . By Terry Mizrahi
Physicians and Social Change . By John Colombotos and Corinne Kirchner
Changing Values in Medicine . Edited by Eric J. Cassell and Mark Siegler
Professional Ethics and Primary Care Medicine: Beyond Dilemmas and Decorum . By Harmon L. Smith and Larry R. Churchill
Physician—Patient Decision-Making: A Study in Medical Ethics . By Douglas N. Walton
With Dignity: The Search for Medicare and Medicaid . By Sheri I. David
The Dismissal of Students with Mental Disorders. Legal Issues, Policy Considerations, and Alternative Responses .
Courtroom Toxicology . By Marshall Houts, Randall C. Baselt, and Robert H. Cravey  相似文献   
57.
This article reviews the laws in Sweden concerning mentally disordered offenders. It also contains some figures on the relationship between mentally disordered offenders and other offenders sentenced to prison. The rules in Sweden are very different from other countries in that the responsibility concept has been abolished and thus there is no acquittal on a psychiatric basis.  相似文献   
58.
In order to cooperate with voluntary screening programs aimed at the surveillance of the HIV epidemic in Finland, we have studied medicolegal autopsies for HIV antibodies since 1986 using an enzyme immunoassay on postmortem sera. The investigation covered 47.4% and 39.2%, respectively, of all deaths under the age of 65 years in the metropolitan areas of Helsinki and Turku--two cities on the densely populated southern coast of Finland from which most HIV infections have thus far been detected. Nine HIV-positive cases (0.12%) were detected among the 7305 medicolegal autopsies tested in 1986 to 1990. This figure is higher than the prevalence of 0.01 to 0.03% in voluntary screening programs for the general population would suggest. Seven of our cases had previously tested positive, and two were previously unknown cases, indicating that people at high risk are clustered in the medicolegal autopsy series. Of the six cases in an early stage of infection, three committed suicide suggesting the importance of HIV-screening in suicide cases in tracing symptomless HIV carriers. Five of the cases were detected in 1990, a year when the number of new HIV infections had more than doubled compared to the previous two years. This suggests that testing of medicolegal autopsies as surrogate tests for the population gives useful information even in low-prevalence areas like Finland. Such testing has none of the ethical problems of many other back-up surveys, and may be particularly sensitive to early changes in epidemiology.  相似文献   
59.
A dissecting intramural haematoma of the coronary artery is an infrequent cause of sudden and unexpected death. Most cases are women and in a significant number of these women, the haematoma occurred at term to 80 days postpartum. Because the intimal rupture and communication with the lumen were not found in most of the cases, the site of rupture has been considered to be a vasa vasorum. The authors report on a case of one woman who was at a later postpartum period (106 days). The microscopic finding of the dissected coronary artery revealed two intimal tears in a section. The case showed that the dissecting intramural haematoma of the coronary artery is caused not only by the rupture of the vasa vasorum but also by the rupture of the intima.  相似文献   
60.
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