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   4661585篇
  免费   364117篇
  国内免费   15440篇
耳鼻咽喉   63884篇
儿科学   148782篇
妇产科学   123821篇
基础医学   703251篇
口腔科学   131512篇
临床医学   421946篇
内科学   843334篇
皮肤病学   113476篇
神经病学   386065篇
特种医学   183679篇
外国民族医学   716篇
外科学   709898篇
综合类   138758篇
现状与发展   23篇
一般理论   2684篇
预防医学   383242篇
眼科学   111439篇
药学   329813篇
  26篇
中国医学   12908篇
肿瘤学   231885篇
  2021年   56367篇
  2019年   58977篇
  2018年   74833篇
  2017年   57273篇
  2016年   63522篇
  2015年   76510篇
  2014年   110987篇
  2013年   176546篇
  2012年   127412篇
  2011年   132915篇
  2010年   127413篇
  2009年   128298篇
  2008年   119392篇
  2007年   126919篇
  2006年   135304篇
  2005年   129873篇
  2004年   131539篇
  2003年   120930篇
  2002年   110135篇
  2001年   179891篇
  2000年   176171篇
  1999年   160041篇
  1998年   73862篇
  1997年   69226篇
  1996年   67079篇
  1995年   62618篇
  1994年   56708篇
  1993年   52654篇
  1992年   118543篇
  1991年   114256篇
  1990年   109595篇
  1989年   106880篇
  1988年   98762篇
  1987年   96647篇
  1986年   92007篇
  1985年   90211篇
  1984年   74022篇
  1983年   65707篇
  1982年   50524篇
  1981年   46858篇
  1980年   44028篇
  1979年   65052篇
  1978年   51024篇
  1977年   45269篇
  1976年   42068篇
  1975年   42017篇
  1974年   47176篇
  1973年   45413篇
  1972年   42285篇
  1971年   39372篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
BackgroundThe aim of this study was to estimate the prevalence of dental prosthetic treatment and to investigate the demographic, social, economic and medical factors associated with the use of fixed and removable dentures in a representative sample of adults living in France.MethodsThe data were obtained from the 2002–2003 Decennial Health Survey, a cross-sectional study of a representative sample of the population living in France, which included 29,679 adults. Information was collected by interview. The variables collected were fixed denture, removable denture, age, gender, number of children, area of residence, nationality, educational attainment, family social status, employment status, annual household income per capita, supplementary insurance, chronic disease, eyesight problems/glasses, hearing problems/hearing aids. Multinomial logistic regression models were used to study the relationship between prosthetic treatment and demographic, socioeconomic and medical characteristics unadjusted, adjusted for age and adjusted for all the characteristics.ResultsThe prevalence of prosthetic treatment was 34.6% (95% confidence interval (CI): [34.1; 35.2]) for fixed prosthetic dentures and 13.8% (95% CI: [13.4; 14.2]) for removable prosthetic dentures. We showed a gradient between educational attainment and removable dentures; the odds ratio adjusted for all the variables (aOR) associated with no or primary education compared to post-secondary education was 2.56; 95% CI: [2.09; 3.13]. When annual household income per capita was low, subjects were less likely to report fixed dentures (aOR = 0.68; 95% CI: [0.62; 0.75]) than those with high annual household income per capita. Individuals without insurance less often reported fixed dentures than those with private insurance. Those reporting chronic disease were less likely to report fixed dentures (aOR = 0.87; 95% CI: [0.79; 0.95]) but more likely to report removable dentures (aOR = 1.29; 95% CI: [1.17; 1.43]) than those without chronic disease.ConclusionThis study reveals social, economic and medical inequalities in fixed and removable prosthetic treatment among adults in France.  相似文献   
5.
6.
7.
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   

8.
9.
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   
10.
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