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   171767篇
  免费   7836篇
  国内免费   156篇
  179759篇
  2021年   1518篇
  2020年   2825篇
  2019年   3493篇
  2018年   3547篇
  2017年   3995篇
  2016年   4688篇
  2015年   3992篇
  2014年   4862篇
  2013年   23907篇
  2012年   4620篇
  2011年   3741篇
  2010年   3932篇
  2009年   4859篇
  2008年   3925篇
  2007年   3412篇
  2006年   4085篇
  2005年   4041篇
  2004年   3583篇
  2003年   3213篇
  2002年   3027篇
  2001年   3231篇
  2000年   3073篇
  1999年   3074篇
  1998年   2875篇
  1997年   2715篇
  1996年   2609篇
  1995年   2452篇
  1994年   2413篇
  1993年   2368篇
  1992年   2512篇
  1991年   2351篇
  1990年   2216篇
  1989年   2142篇
  1988年   2107篇
  1987年   2136篇
  1986年   2120篇
  1985年   2336篇
  1984年   2473篇
  1983年   2303篇
  1982年   2377篇
  1981年   2345篇
  1980年   2168篇
  1979年   2075篇
  1978年   2164篇
  1977年   2134篇
  1976年   1926篇
  1975年   1929篇
  1974年   1992篇
  1973年   1790篇
  1972年   1424篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
221.
222.
223.
224.
Promises     
GRANT CK 《Mind》1949,58(231):359-366
  相似文献   
225.
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   
226.
Introduction     
Knowledge, Technology &; Policy -  相似文献   
227.
228.
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   
229.
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   
230.
Brain lateralization research has led to speculation about counseling and guidance implications of left-right brain differences. Serious limitations in these implications are highlighted.  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