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   2655826篇
  免费   195551篇
  国内免费   3741篇
耳鼻咽喉   36504篇
儿科学   86482篇
妇产科学   71527篇
基础医学   395804篇
口腔科学   73487篇
临床医学   238029篇
内科学   512121篇
皮肤病学   59219篇
神经病学   208545篇
特种医学   99110篇
外国民族医学   544篇
外科学   400106篇
综合类   53253篇
现状与发展   12篇
一般理论   937篇
预防医学   207922篇
眼科学   62448篇
药学   199191篇
  11篇
中国医学   5142篇
肿瘤学   144724篇
  2019年   21332篇
  2018年   29610篇
  2017年   22224篇
  2016年   24906篇
  2015年   28061篇
  2014年   39554篇
  2013年   59533篇
  2012年   81904篇
  2011年   87425篇
  2010年   51772篇
  2009年   49044篇
  2008年   82488篇
  2007年   87828篇
  2006年   88816篇
  2005年   85873篇
  2004年   82419篇
  2003年   79318篇
  2002年   76821篇
  2001年   121953篇
  2000年   125272篇
  1999年   105093篇
  1998年   30290篇
  1997年   26512篇
  1996年   27024篇
  1995年   25445篇
  1994年   23488篇
  1993年   22156篇
  1992年   81292篇
  1991年   79500篇
  1990年   77915篇
  1989年   75074篇
  1988年   68993篇
  1987年   67807篇
  1986年   63425篇
  1985年   60893篇
  1984年   45180篇
  1983年   38495篇
  1982年   22740篇
  1979年   41994篇
  1978年   30125篇
  1977年   25048篇
  1976年   23961篇
  1975年   26029篇
  1974年   31230篇
  1973年   29676篇
  1972年   27880篇
  1971年   26617篇
  1970年   24551篇
  1969年   23350篇
  1968年   21556篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
31.
32.
33.
34.
Graefe's Archive for Clinical and Experimental Ophthalmology - The published online version contains mistake as the author's first name and last name have been interchanged as "Hild...  相似文献   
35.
36.
37.
38.
39.
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   
40.
Abstract

Objective: This study aims at identifying associations between cognitive function and suicidal ideation in the sample of patients with anxiety and mood disorders (AMD).

Methods: In sum, 186 (age = 39?±?12.3 years; 142 [76.3%] females) patients with AMD were enrolled in the study. Assessment included evaluation of socio-demographic information, medication use, anxiety and depression symptoms. Cognitive tests included measures of psychomotor performance and incidental learning using the Digit Symbol Test. Trail Making Tests respectively measured perceptual speed, task-switching and executive control. Additionally, 21 patients completed tests from the Cambridge Automated Neuropsychological Test Battery measuring set shifting (Interdimensional/extradimensional set-shift), executive planning (Stockings of Cambridge), and decision making (Cambridge Gamble Task [CGT]).

Results: Almost half (45.0%, n?=?86) of the study sample patients had experienced suicidal ideations. In multivariable regression analysis, suicidal ideation was associated with a greater overall proportion of bet and risk taking on the CGT task (β?=?0.726, p?=?.010 and β?=?0.634, p?=?.019), when controlling for socio-demographic characteristics, medication use, anxiety and depression symptoms.

Conclusions: Outpatients with AMD and suicidal ideation could be distinguished by the presence of cognitive deficits in the executive function domain, particularly in impulse-control and risk taking.  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