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   23667篇
  免费   685篇
各国政治   1079篇
工人农民   855篇
世界政治   1934篇
外交国际关系   844篇
法律   14128篇
中国共产党   2篇
中国政治   114篇
政治理论   5165篇
综合类   231篇
  2020年   274篇
  2019年   337篇
  2018年   458篇
  2017年   495篇
  2016年   534篇
  2015年   432篇
  2014年   471篇
  2013年   2536篇
  2012年   588篇
  2011年   614篇
  2010年   541篇
  2009年   581篇
  2008年   626篇
  2007年   654篇
  2006年   662篇
  2005年   579篇
  2004年   556篇
  2003年   536篇
  2002年   529篇
  2001年   890篇
  2000年   751篇
  1999年   621篇
  1998年   366篇
  1997年   326篇
  1996年   267篇
  1995年   274篇
  1994年   313篇
  1993年   290篇
  1992年   437篇
  1991年   485篇
  1990年   426篇
  1989年   466篇
  1988年   420篇
  1987年   463篇
  1986年   462篇
  1985年   455篇
  1984年   407篇
  1983年   431篇
  1982年   348篇
  1981年   322篇
  1980年   258篇
  1979年   327篇
  1978年   235篇
  1977年   197篇
  1976年   188篇
  1975年   172篇
  1974年   195篇
  1973年   177篇
  1972年   151篇
  1971年   134篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
81.
82.
83.
84.
This article discusses relevant literature on the potential benefits of sport, recreation, and leisure, and how these benefits relate to rehabilitation of juveniles. Many professionals involved in juvenile rehabilitation believe sport and recreation are beneficial adjuncts to treatment programming; however, it can be difficult to structure sport and recreation in ways that directly correspond to treatment goals. The purpose of this article is to provide insights for professionals working with juveniles on how sport and recreation programming can be an effective means of helping to achieve rehabilitation goals. Attention is given to approaches, particularly the Teaching Games for Understanding model (Bunker & Thorpe, 1982), which can be used to effectively link recreation and sport to the rehabilitation process.  相似文献   
85.
86.
87.
88.
Correlation between plasma and bone marrow tricyclic antidepressants has not been studied before. Two groups of rabbits were given 10 and 20 mg of desipramine/kg body weight, respectively. Desipramine was administered to the animals once daily by mouth for 5 days. On the fifth day the animals were sacrificed and blood and bone marrow samples were collected and analyzed using a high performance liquid chromatographic (HPLC) method. Data showed that a correlation exists between bone marrow and blood desipramine. The bone marrow desipramine concentration increased as its blood levels increased. The average ratio of bone marrow to blood desipramine +/- S.D. (standard deviation) in both dosage groups was 37.2 +/- 4.46 with a range of 30.99-44.82. This investigation is promising and shows that bone marrow could be used as an alternative tissue in the absence of a suitable blood sample.  相似文献   
89.
90.
The formation of adequate mental health systems within prisons has accelerated as a result of successful class action lawsuits. Our recent national survey questioned all state correctional departments about the existence of standards in each system, compliance with such standards, prevalence of class action lawsuits involving the issue of providing adequate mental health services for inmates, issues related to consent decrees, available mental health resources within the correctional system, and the administrative structure of the mental health system. Our purpose was to identify those factors correlated with certified class action lawsuits involving issues related to mental health services. Twenty-one states were involved in such litigation. Only the presence of psychiatric hospitals operated by the department of corrections correlated with the presence of certified class action lawsuits involving mental health services. Prison systems larger than 15,000 inmates were at higher risk for such litigation. Smaller systems having psychiatric hospitals run by the state mental health agency appeared to be at less risk for such litigation.  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