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   1902063篇
  免费   128622篇
  国内免费   3820篇
耳鼻咽喉   23290篇
儿科学   63055篇
妇产科学   49966篇
基础医学   263810篇
口腔科学   50767篇
临床医学   167203篇
内科学   370049篇
皮肤病学   39942篇
神经病学   150301篇
特种医学   73836篇
外国民族医学   242篇
外科学   291898篇
综合类   42020篇
现状与发展   4篇
一般理论   555篇
预防医学   145195篇
眼科学   43289篇
药学   135131篇
  7篇
中国医学   5143篇
肿瘤学   118802篇
  2021年   13530篇
  2019年   14263篇
  2018年   42185篇
  2017年   32852篇
  2016年   37127篇
  2015年   20549篇
  2014年   27826篇
  2013年   39985篇
  2012年   61057篇
  2011年   77746篇
  2010年   51858篇
  2009年   43051篇
  2008年   72894篇
  2007年   79377篇
  2006年   57268篇
  2005年   56553篇
  2004年   56149篇
  2003年   55073篇
  2002年   51084篇
  2001年   92790篇
  2000年   94830篇
  1999年   77694篇
  1998年   20261篇
  1997年   17816篇
  1996年   17784篇
  1995年   17077篇
  1994年   15657篇
  1993年   14371篇
  1992年   57863篇
  1991年   55776篇
  1990年   53479篇
  1989年   51186篇
  1988年   46513篇
  1987年   45350篇
  1986年   42546篇
  1985年   40335篇
  1984年   29633篇
  1983年   25155篇
  1982年   14135篇
  1979年   25794篇
  1978年   17791篇
  1977年   15046篇
  1976年   14029篇
  1975年   14655篇
  1974年   17810篇
  1973年   17074篇
  1972年   15761篇
  1971年   14555篇
  1970年   13544篇
  1969年   12656篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
111.
112.
Graefe's Archive for Clinical and Experimental Ophthalmology -  相似文献   
113.
114.
Advancing nanomedicines from concept to clinic requires integration of new science with traditional pharmaceutical development. The medical and commercial success of nanomedicines is greatly facilitated when those charged with developing nanomedicines are cognizant of the unique opportunities and technical challenges that these products present. These individuals must also be knowledgeable about the processes of clinical and product development, including regulatory considerations, to maximize the odds for successful product registration. This article outlines these topics with a goal to accelerate the combination of academic innovation with collaborative industrial scientists who understand pharmaceutical development and regulatory approval requirements—only together can they realize the full potential of nanomedicines for patients.  相似文献   
115.
116.
117.
118.
119.
While peer support has been investigated in multiple clinical contexts, its application to the postpartum setting is unknown. The aim was to assess acceptability of a postpartum peer support program for women with diabetes. Observational survey-based needs assessment of forty low-income women with diabetes, receiving care at a major medical institution. Mean age and gravidity were 30.7 years and 3.15 ± 1.67 respectively. 45 % expressed interest in a “buddy.” There was no significant difference between groups desiring and not desiring this program. A majority of respondents desired telephone, text messaging, and in-person contacts (79.2, 72.1, 83.8 %), with 72.5 % of patients desiring diabetes-related activities during clinic waiting time. Many women desire a postpartum diabetes reciprocal peer program for support outside of clinician visits. Patients are receptive to educational services during their wait and outside of clinic time, a potentially valuable opportunity to share important health information.  相似文献   
120.
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   
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