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   166723篇
  免费   33392篇
  国内免费   2450篇
耳鼻咽喉   5300篇
儿科学   5921篇
妇产科学   2887篇
基础医学   5771篇
口腔科学   1744篇
临床医学   28612篇
内科学   50474篇
皮肤病学   7936篇
神经病学   16477篇
特种医学   6753篇
外科学   42399篇
综合类   385篇
现状与发展   72篇
一般理论   20篇
预防医学   9067篇
眼科学   3640篇
药学   2000篇
中国医学   42篇
肿瘤学   13065篇
  2024年   718篇
  2023年   5009篇
  2022年   1649篇
  2021年   3958篇
  2020年   6531篇
  2019年   2865篇
  2018年   8106篇
  2017年   7867篇
  2016年   9003篇
  2015年   9028篇
  2014年   16232篇
  2013年   16582篇
  2012年   6952篇
  2011年   6974篇
  2010年   11065篇
  2009年   14854篇
  2008年   6788篇
  2007年   5032篇
  2006年   7334篇
  2005年   4596篇
  2004年   3782篇
  2003年   2671篇
  2002年   2653篇
  2001年   3870篇
  2000年   3052篇
  1999年   3283篇
  1998年   3746篇
  1997年   3547篇
  1996年   3416篇
  1995年   3275篇
  1994年   1997篇
  1993年   1602篇
  1992年   1406篇
  1991年   1447篇
  1990年   1097篇
  1989年   1195篇
  1988年   1033篇
  1987年   874篇
  1986年   899篇
  1985年   741篇
  1984年   572篇
  1983年   545篇
  1982年   531篇
  1981年   430篇
  1980年   378篇
  1979年   316篇
  1978年   352篇
  1977年   407篇
  1975年   281篇
  1972年   308篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
41.
42.
43.
44.
45.
46.
Breast elastography has been available for more than 15 years but is not widely incorporated into clinical practice. Many publications report extremely high accuracy for various breast elastographic techniques. However, results in the literature are extremely variable. This variability is most likely due to variations in technique, a relatively steep learning curve, and variability in methods between vendors. This article describes our protocol for performing breast elastography using both strain elastography and shear wave elastography, which produces high sensitivity and specificity. Additionally, we will describe the most commonly known false-positive and false-negative lesions as well as how to detect them.  相似文献   
47.
48.
In the USA, the Black Church is among the most important institutions in the Black community, offering numerous spiritual, social and health benefits. Yet, the presence of homonegativity in many Black Churches may mitigate those effects for gay Black youth. This research examines the role of the Church in the lives of gay and bisexual Black youth to understand how they reconcile any tension between their religious and sexual identities. Through interviews with pastors of Black churches (n = 21) and young Black men who have sex with men (n = 30), we explored homonegativity and young men’s experiences within the Black Church. Findings reveal that despite the prevalence of homonegativity within Black churches, religious involvement remains important for young men and many remain involved in non-affirming churches. The importance of the Church for young men stems from their significant involvement as youth and the integration of religion, family and community. Young men may not be able to leave their religious homes as readily as other gay youth given the cultural relevance of the Church. As a result, young men made attempts to conceal their sexuality in church to avoid shame and gossip and find opportunities to balance their sexuality and religiosity.  相似文献   
49.
An essential piece of anesthesiologist training is attending resident feedback sessions. Yet, few attending anesthesiologists have formal teaching education and little time to acquire it. In this field experiment, attending physicians were randomly assigned to a control group or to receive 30 minutes of feedback training inspired by Implicit Person Theory (IPT). As such, IPT training encouraged physicians to praise process-oriented learning while discouraging performance-oriented mindsets. Attending physicians then observed residents participate in a human patient simulation (HPS) activity and provided residents with feedback. Content and statistical analyses revealed trained attending physicians praised learning goals and challenged performance goals more often than untrained physicians during feedback sessions. Thus, the training provides a rapid method of enhancing the quality of attending physicians’ training communication.  相似文献   
50.
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