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   526947篇
  免费   34499篇
  国内免费   639篇
耳鼻咽喉   7053篇
儿科学   17412篇
妇产科学   14002篇
基础医学   87117篇
口腔科学   14716篇
临床医学   45173篇
内科学   96664篇
皮肤病学   12369篇
神经病学   37265篇
特种医学   19008篇
外国民族医学   63篇
外科学   78736篇
综合类   8519篇
一般理论   121篇
预防医学   39973篇
眼科学   12524篇
药学   41653篇
中国医学   1030篇
肿瘤学   28687篇
  2018年   5216篇
  2016年   4348篇
  2015年   4823篇
  2014年   6458篇
  2013年   10066篇
  2012年   13555篇
  2011年   15040篇
  2010年   8723篇
  2009年   8101篇
  2008年   14183篇
  2007年   15211篇
  2006年   15438篇
  2005年   14887篇
  2004年   14600篇
  2003年   13896篇
  2002年   13810篇
  2001年   24442篇
  2000年   25435篇
  1999年   20865篇
  1998年   5545篇
  1997年   4796篇
  1996年   5129篇
  1995年   4692篇
  1994年   4371篇
  1992年   15938篇
  1991年   16496篇
  1990年   16605篇
  1989年   15971篇
  1988年   14749篇
  1987年   14581篇
  1986年   13773篇
  1985年   13123篇
  1984年   9749篇
  1983年   8358篇
  1982年   4627篇
  1981年   4297篇
  1979年   9576篇
  1978年   6957篇
  1977年   5858篇
  1976年   5691篇
  1975年   6522篇
  1974年   7778篇
  1973年   7255篇
  1972年   7092篇
  1971年   6811篇
  1970年   6311篇
  1969年   6011篇
  1968年   5701篇
  1967年   5162篇
  1966年   4566篇
排序方式: 共有10000条查询结果,搜索用时 15 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