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   136605篇
  免费   9472篇
  国内免费   630篇
耳鼻咽喉   1657篇
儿科学   3430篇
妇产科学   2457篇
基础医学   17463篇
口腔科学   2913篇
临床医学   13382篇
内科学   28128篇
皮肤病学   1773篇
神经病学   12002篇
特种医学   5410篇
外科学   21895篇
综合类   1930篇
现状与发展   1篇
一般理论   173篇
预防医学   12469篇
眼科学   2935篇
药学   9655篇
  2篇
中国医学   179篇
肿瘤学   8853篇
  2023年   675篇
  2022年   1052篇
  2021年   2586篇
  2020年   1479篇
  2019年   2411篇
  2018年   2951篇
  2017年   2122篇
  2016年   2243篇
  2015年   2726篇
  2014年   4027篇
  2013年   6088篇
  2012年   8910篇
  2011年   9480篇
  2010年   5269篇
  2009年   4823篇
  2008年   8410篇
  2007年   9017篇
  2006年   8592篇
  2005年   8750篇
  2004年   8393篇
  2003年   7882篇
  2002年   7703篇
  2001年   1294篇
  2000年   1066篇
  1999年   1410篇
  1998年   1631篇
  1997年   1309篇
  1996年   1255篇
  1995年   1219篇
  1994年   1038篇
  1993年   1006篇
  1992年   847篇
  1991年   871篇
  1990年   765篇
  1989年   740篇
  1988年   764篇
  1987年   747篇
  1986年   770篇
  1985年   839篇
  1984年   909篇
  1983年   870篇
  1982年   1137篇
  1981年   1157篇
  1980年   970篇
  1979年   633篇
  1978年   669篇
  1977年   605篇
  1976年   528篇
  1975年   471篇
  1974年   482篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
Abstract: Background: Fetal pulse oximetry improves the assessment of fetal well‐being during labor. The objective of this study was to evaluate women's satisfaction with their experience with this additional technology. Methods: We surveyed women participating in the FOREMOST trial, a randomized controlled trial comparing the addition of fetal pulse oximetry (FPO) to conventional cardiotocograph (CTG) monitoring (intervention group), versus CTG‐only (control group), in the presence of nonreassuring fetal status during labor. Our survey evaluated 3 aspects of women's experience: labor, fetal monitoring, and participation in the research. The survey was administered within a few days of giving birth and repeated 3 months later. Results: No differences were found between the intervention and control groups for women's evaluations of their labor, fetal monitoring, research, or overall experiences when surveyed on both occasions. Within each study group, a small but statistically significant decline occurred in women's scores for their experience of labor and overall experience from the initial survey close to the time of giving birth, to 3 months later. The magnitude of differences in responses over time was similar for the both groups. Women were more satisfied after a spontaneous or assisted vaginal birth than after cesarean section. Length of time the research midwife was present had a significant positive effect on women's ratings of their experience several days after giving birth (p = 0.006), but no effect at 3 months. Conclusions: The addition of fetal pulse oximetry for the assessment of fetal well‐being during labor did not affect childbearing women's perceptions of fetal monitoring or their labor. Women evaluated their experience in the research process positively overall. Small changes occurred in women's perception of their satisfaction over time. (BIRTH 33:2 June 2006)  相似文献   
4.
5.
We report on 4 children who experienced a syncopal episode while being treated with guanfacine without any other evident cause. Syncope appears to be an uncommon side effect of guanfacine and is probably due to drug-induced hypotension or bradycardia.  相似文献   
6.
7.
8.
Systems of care (SOCs) have been developed throughout the country to meet the needs of children with severe emotional disturbances (SED) and their families. In these SOCs, multiple agencies and disciplines are expected to work together with informal community supports to address families' needs (Stroul & Friedman, 1986a). A review of the literature on the impact of SOCs suggests: (a) communities' service delivery systems change; and (b) children experience modest improvements in symptomatology and functioning. At the same time, little is known about (a) which components of the SOC approach, at what levels, are necessary to impact child and family outcomes; (b) the degree to which SOCs affect other family members, beyond the target child; and (c) the impact of community contexts and supports in SOCs. Future research should improve measurement of key SOC constructs, examine the relation between specific levels of implementation and outcomes for the entire family, and investigate the impact of broader community systems and supports on families within SOCs. © 2004 Wiley Periodicals, Inc. J Comm Psychol 32: 655–674, 2004.  相似文献   
9.
10.
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