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   172657篇
  免费   7878篇
  国内免费   159篇
  180694篇
  2021年   1545篇
  2020年   2876篇
  2019年   3540篇
  2018年   3629篇
  2017年   4072篇
  2016年   4742篇
  2015年   4006篇
  2014年   4907篇
  2013年   23903篇
  2012年   4738篇
  2011年   3855篇
  2010年   3992篇
  2009年   4914篇
  2008年   4025篇
  2007年   3556篇
  2006年   4146篇
  2005年   4079篇
  2004年   3616篇
  2003年   3246篇
  2002年   3023篇
  2001年   3225篇
  2000年   3086篇
  1999年   3087篇
  1998年   2865篇
  1997年   2700篇
  1996年   2591篇
  1995年   2450篇
  1994年   2417篇
  1993年   2373篇
  1992年   2500篇
  1991年   2350篇
  1990年   2199篇
  1989年   2144篇
  1988年   2121篇
  1987年   2142篇
  1986年   2118篇
  1985年   2325篇
  1984年   2478篇
  1983年   2262篇
  1982年   2375篇
  1981年   2344篇
  1980年   2173篇
  1979年   2091篇
  1978年   2143篇
  1977年   2115篇
  1976年   1913篇
  1975年   1912篇
  1974年   1982篇
  1973年   1785篇
  1972年   1421篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
231.
232.
233.
234.
235.
Promises     
GRANT CK 《Mind》1949,58(231):359-366
  相似文献   
236.
The principles, design considerations, and components of a clinical information system intended to support and enhance the patient care, educational, and research missions of a comprehensive psychiatric institute are presented. Major characteristics of the system are its emphases on efficiency, simplicity, and intensive user involvement throughout the development of the system.  相似文献   
237.
Introduction     
Knowledge, Technology &; Policy -  相似文献   
238.
239.
This study provides evidence that the effects of perceived pervasive discrimination may be dynamic over time. It was expected that participants who perceived discrimination to be highly pervasive would initially be more likely to engage in inactive coping strategies than those who perceived low pervasiveness; however, those who continued to perceive high pervasiveness over time were expected ultimately to engage in more active strategies than those perceiving low pervasiveness. Using a 28-day diary, women and ethnic minorities described their daily experiences of discrimination and indicated their appraisals of its pervasiveness as well as their coping strategies. Results showed that participants who initially perceived low pervasiveness reported more active coping and religion use as well as less behavioral disengagement than those initially perceiving high pervasiveness. However, this pattern was reversed by the end of the study. Implications for integrating time into the assessment of coping with discrimination are discussed.  相似文献   
240.
Adherence to medications for chronic pediatric diseases decreases overtime. This randomized controlled trial evaluated a clinic-based, nurse-administered educational and behavioral intervention to prevent the anticipated drop in adherence to nonsteroidal medications among newly diagnosed patients with juvenile rheumatoid arthritis. Thirty-four participants completed the study (mean age = 8.44 years, SD = 3.96), including 19 in the experimental group and 15 in the standard-treatment (education) control group. There were significant group and Group x Time effects for adherence (assessed with an electronic monitor over a 13-month period) favoring the experimental group. In contrast, the groups did not differ significantly in disease activity or functional limitations. Factors that may have prevented detection of differences in these health parameters are dicussed.  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