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   3169110篇
  免费   236443篇
  国内免费   4810篇
耳鼻咽喉   44969篇
儿科学   105336篇
妇产科学   86157篇
基础医学   461028篇
口腔科学   87012篇
临床医学   285806篇
内科学   614246篇
皮肤病学   69778篇
神经病学   250892篇
特种医学   120469篇
外国民族医学   1097篇
外科学   479537篇
综合类   67517篇
现状与发展   12篇
一般理论   1148篇
预防医学   248703篇
眼科学   74289篇
药学   236402篇
  12篇
中国医学   6162篇
肿瘤学   169791篇
  2019年   25287篇
  2018年   35171篇
  2017年   26443篇
  2016年   29583篇
  2015年   33356篇
  2014年   47025篇
  2013年   70981篇
  2012年   97851篇
  2011年   104162篇
  2010年   62065篇
  2009年   58676篇
  2008年   97973篇
  2007年   104790篇
  2006年   105581篇
  2005年   102389篇
  2004年   98601篇
  2003年   95132篇
  2002年   92531篇
  2001年   144895篇
  2000年   149101篇
  1999年   126237篇
  1998年   36662篇
  1997年   32258篇
  1996年   32645篇
  1995年   30979篇
  1994年   28781篇
  1993年   26896篇
  1992年   98605篇
  1991年   96612篇
  1990年   94054篇
  1989年   90286篇
  1988年   83092篇
  1987年   81872篇
  1986年   76498篇
  1985年   73640篇
  1984年   55048篇
  1983年   46748篇
  1982年   27769篇
  1981年   25026篇
  1979年   50392篇
  1978年   35765篇
  1977年   30045篇
  1976年   28517篇
  1975年   30799篇
  1974年   36512篇
  1973年   34935篇
  1972年   32585篇
  1971年   30496篇
  1970年   28428篇
  1969年   26758篇
排序方式: 共有10000条查询结果,搜索用时 21 毫秒
41.
Background: Traumatic brain injury (TBI) results in verbal recall deficits and impaired processing of emotion encoded in facial appearance, prosody and the linguistic content of messages. Emotion facilitates memory (emotional memory advantage) for non-brain injured (NBI) individuals but the impact of emotion on verbal recall for linguistically encoded stimuli in TBI has not been explored.

Aims: The purpose of this study was to determine the effects of stimulus emotional content on verbal recall of words and paragraphs in TBI compared to NBI individuals.

Methods and procedures: Six 10-item lists, each with five emotional and five neutral words, and six paragraphs (three emotional, three neutral) were counterbalanced and presented in random order to 20 individuals with TBI and 44 NBI. The number of words from lists and the number of content units from paragraphs were compared for the two groups.

Outcomes and results: The NBI participants recalled more words from the lists and content units from the paragraphs than the individuals with TBI. Both groups recalled significantly more emotional than neutral words. NBI but not TBI participants had significantly greater recall for information in paragraphs with emotional content.

Conclusions: Participants with TBI showed impaired recall of words and paragraph content. Emotion facilitated word and paragraph content recall for neurotypical individuals but emotional memory advantage was limited to words for the TBI participants.  相似文献   

42.
43.
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   
44.
45.
46.
47.
48.
49.
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   
50.
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