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   528834篇
  免费   34669篇
  国内免费   709篇
耳鼻咽喉   7395篇
儿科学   17901篇
妇产科学   14081篇
基础医学   86303篇
口腔科学   15301篇
临床医学   45576篇
内科学   96075篇
皮肤病学   12633篇
神经病学   37218篇
特种医学   19130篇
外国民族医学   63篇
外科学   80374篇
综合类   8758篇
现状与发展   1篇
一般理论   124篇
预防医学   39578篇
眼科学   12571篇
药学   41418篇
  1篇
中国医学   1163篇
肿瘤学   28548篇
  2018年   5357篇
  2016年   4500篇
  2015年   4888篇
  2014年   6593篇
  2013年   10286篇
  2012年   13837篇
  2011年   15432篇
  2010年   8919篇
  2009年   8147篇
  2008年   14495篇
  2007年   15721篇
  2006年   15925篇
  2005年   15431篇
  2004年   14994篇
  2003年   14291篇
  2002年   14142篇
  2001年   24535篇
  2000年   25586篇
  1999年   20969篇
  1998年   5560篇
  1997年   4804篇
  1996年   5133篇
  1995年   4710篇
  1994年   4378篇
  1992年   15824篇
  1991年   16390篇
  1990年   16491篇
  1989年   15875篇
  1988年   14630篇
  1987年   14465篇
  1986年   13660篇
  1985年   13026篇
  1984年   9669篇
  1983年   8275篇
  1982年   4577篇
  1981年   4244篇
  1979年   9446篇
  1978年   6879篇
  1977年   5787篇
  1976年   5620篇
  1975年   6415篇
  1974年   7677篇
  1973年   7156篇
  1972年   6977篇
  1971年   6706篇
  1970年   6189篇
  1969年   5904篇
  1968年   5572篇
  1967年   5024篇
  1966年   4464篇
排序方式: 共有10000条查询结果,搜索用时 437 毫秒
1.
2.
Maternal and Child Health Journal - Early life exposures can have an impact on a child’s developmental trajectory and children born late preterm (34–36 weeks gestational age)...  相似文献   
3.
ABSTRACT

Objective: Dry eye is reported to be associated with several neurological diseases. The aim of this study is to evaluate the patients with hemiplegia after stroke for dry eye and compare their results with a control group.

Materials and methods: Forty-five patients with hemiplegia and 45 individuals as the control group were included in the study. Tear function tests (Schirmer and tear breakup time) and a dry eye questionnaire for dry eye symptoms (ocular surface disease index) were performed and the results of the two groups were compared.

Results: Schirmer test results were significantly lower in the post-stroke hemiplegia group compared to the control group (11.3 ± 8.2 mm and 20.6 ± 11.6 mm, respectively, p < .001). Tear breakup time results were significantly lower in the post-stroke hemiplegia group compared to the control group (7.9 ± 3.1 s and 12.1 ± 4.3 s, respectively, p < .001). Ocular surface disease index scores were not significantly different between hemiplegia and control groups (21.6 ± 20.0 and 19.8 ± 13.9, respectively, p = .635). Schirmer scores lower than 10 mm (60% and 30%, p < .001) and tear breakup time results lower than 10 s (65.6% and 28.9%, p < .001) were also higher in the hemiplegia group compared to control group.

Conclusion: We found lower Schirmer test and tear breakup time results and similar OSDI scores in hemiplegia patients compared to controls. Hemiplegia patients may have dry eye without typical symptoms. This should be taken into consideration in the follow-up and rehabilitation of post-stroke hemiplegia patients.  相似文献   
4.
5.
6.
7.
8.
9.
10.
Academic output is just one aspect of a successful career as a plastic surgeon. However, for those with a strong interest in academia, the academic output of a department will likely be a key factor when deciding how to rank jobs. The aim of this study was to quantify and rank the academic output of plastic surgery units across the UK and Ireland. The Institute for Scientific Information (ISI) Web of Science Bibliometric analysis tool was used to collate cumulative (1950–2016), 10 year (2006–2016) and 3 years (2013–2015) research output data for plastic surgery units in the UK and Ireland. Sixty-six plastic surgery units were identified. Departments were ranked for each time period according to the number of papers produced, number of citations (Nc) and h-index (a measure of the impact of scientific output). The top 3 departments for number of papers in the last 10 years were The Royal Free Hospital, London (226) Broomfield Hospital, Chelmsford (218), and Morriston Hospital and Swansea (188). The top 3 for h-number were The Royal Free Hospital (21) Wythenshawe Hospital, Manchester (18) and Morriston Hospital (17). Academic output varies across plastic surgery units in the UK and Ireland. A number of departments have consistently maintained high academic outputs across the years and will be of interest to surgeons hoping to pursue a career in academia.  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