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   3924432篇
  免费   298519篇
  国内免费   6727篇
耳鼻咽喉   56441篇
儿科学   124468篇
妇产科学   105536篇
基础医学   565138篇
口腔科学   112356篇
临床医学   361120篇
内科学   750673篇
皮肤病学   83422篇
神经病学   319462篇
特种医学   151308篇
外国民族医学   1277篇
外科学   590361篇
综合类   89532篇
现状与发展   13篇
一般理论   1601篇
预防医学   317321篇
眼科学   93796篇
药学   294066篇
  14篇
中国医学   7544篇
肿瘤学   204229篇
  2018年   42164篇
  2017年   31987篇
  2016年   35684篇
  2015年   40304篇
  2014年   57649篇
  2013年   87702篇
  2012年   119266篇
  2011年   126796篇
  2010年   75415篇
  2009年   71377篇
  2008年   119356篇
  2007年   127176篇
  2006年   128391篇
  2005年   124789篇
  2004年   120049篇
  2003年   115503篇
  2002年   113136篇
  2001年   175010篇
  2000年   180521篇
  1999年   152755篇
  1998年   45577篇
  1997年   40424篇
  1996年   40006篇
  1995年   38317篇
  1994年   35719篇
  1993年   33538篇
  1992年   121567篇
  1991年   118594篇
  1990年   115260篇
  1989年   111029篇
  1988年   102910篇
  1987年   101059篇
  1986年   95409篇
  1985年   91684篇
  1984年   69239篇
  1983年   59073篇
  1982年   35785篇
  1981年   32030篇
  1979年   64952篇
  1978年   46067篇
  1977年   38657篇
  1976年   36861篇
  1975年   39072篇
  1974年   47643篇
  1973年   45355篇
  1972年   42865篇
  1971年   40111篇
  1970年   37346篇
  1969年   35143篇
  1968年   32280篇
排序方式: 共有10000条查询结果,搜索用时 17 毫秒
51.
52.
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   
53.
54.
55.
56.
57.
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   
58.
59.
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   
60.
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