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   22678篇
  免费   1298篇
各国政治   1125篇
工人农民   949篇
世界政治   1794篇
外交国际关系   873篇
法律   14254篇
中国共产党   2篇
中国政治   135篇
政治理论   4681篇
综合类   163篇
  2023年   100篇
  2021年   105篇
  2020年   491篇
  2019年   532篇
  2018年   677篇
  2017年   700篇
  2016年   796篇
  2015年   592篇
  2014年   655篇
  2013年   2664篇
  2012年   614篇
  2011年   656篇
  2010年   649篇
  2009年   676篇
  2008年   683篇
  2007年   739篇
  2006年   696篇
  2005年   598篇
  2004年   613篇
  2003年   524篇
  2002年   575篇
  2001年   767篇
  2000年   708篇
  1999年   566篇
  1998年   353篇
  1997年   261篇
  1996年   294篇
  1995年   260篇
  1994年   240篇
  1993年   254篇
  1992年   371篇
  1991年   394篇
  1990年   369篇
  1989年   337篇
  1988年   370篇
  1987年   339篇
  1986年   396篇
  1985年   360篇
  1984年   308篇
  1983年   287篇
  1982年   239篇
  1981年   199篇
  1980年   184篇
  1979年   260篇
  1978年   159篇
  1977年   133篇
  1975年   119篇
  1974年   145篇
  1973年   110篇
  1972年   99篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
961.
Diagnostic problems associated with cadaveric trauma from animal activity   总被引:2,自引:0,他引:2  
Analysis of a series of deaths between 1986 and 2001 resulting from natural disease, accidents, suicides, and homicide, where postmortem animal activity had traumatized bodies, was undertaken at the Forensic Science Center in Adelaide to demonstrate the range of lesions that may occur and problems in interpretation that result. Tissue damage had been caused by a variety of animals, including fly larvae, ants, birds, dogs, rodents, sea lice, and sharks. Postmortem animal activity had disguised injuries, modified wounds, and created the appearances of inflicted injury. Problems with identification occurred after postmortem facial trauma, and loss of organ parenchyma had interfered with, or precluded, the precise determination of the manner of death in some cases. Specific kinds of tissue and organ damage may occur after death, necessitating careful assessment of lesions in a search for characteristic features of animal activity. The pattern of lesions may enable identification of the particular species of animal involved.  相似文献   
962.
An ordnance-disposal expert was killed while disposing of a cache of explosives. The likely position of the body was reconstructed by modeling the explosion as an omnidirectional emission of particles from a model of the explosion site and noting the distribution of particles on a model of a human. The applications and limitations of this method in reconstructing the events and correlation with the injuries noted at autopsy are discussed.  相似文献   
963.
To investigate socioemotional influences on children's eyewitness accuracy, we examined children's reports for activities they were motivated to conceal. Forty-eight 3–6-year-old children participated in a standardized play session with their mothers. Half of the children were told by an experimenter not to play with certain toys, but did so at the urging of their mothers, who told their children to keep the play activities secret. The remaining children were not restricted from playing with the toys, nor told by their mothers to keep the play activities secret. Later, all children were interviewed about the activities with free narrative and detailed questions. Half were given an interview that consisted of highly suggestive questions; half were given an interview consisting of specific, less suggestive questions. Results indicated that older children who were instructed to keep events secret withheld more information than did older children not told to keep events secret. Younger children's reports were not significantly affected by the secret manipulation. There were no significant effects associated with interview type. We discuss implications for understanding the development of children's knowledge and use of secrecy, and applications of the research to issues that arise when child witnesses give reports in legal contexts.  相似文献   
964.
A 2-month-old infant girl died suddenly as a result of torsion of the uterine adnexa. The infant was found unresponsive in bed and was pronounced dead shortly after her arrival at a hospital. There were no antecedent signs of illness. At autopsy, the right ovary and right fallopian tube were twisted and were dark purple, swollen, and necrotic. The right ovary was enlarged by a follicle cyst 4 cm in diameter, which likely precipitated the torsion. The mechanism of death was unclear but may have resulted from the release of cytokines produced in response to necrotic adnexal tissue. Fatal uterine adnexal torsion has been reported rarely in infants; in all those cases there were antecedent symptoms. Torsion of the uterine adnexa should be included in the differential diagnosis of sudden death in infancy.  相似文献   
965.
966.
967.
968.
This article addresses important developments in the field of medicine and law during the period of September 2000 through August 2001. It does not discuss every reported case or piece of legislation but surveys some of the more significant developments in the medicine and law arena.  相似文献   
969.
970.
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