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   4408672篇
  免费   350161篇
  国内免费   15321篇
耳鼻咽喉   61787篇
儿科学   140927篇
妇产科学   114881篇
基础医学   667569篇
口腔科学   118726篇
临床医学   407794篇
内科学   803458篇
皮肤病学   111658篇
神经病学   374020篇
特种医学   171460篇
外国民族医学   753篇
外科学   671111篇
综合类   121368篇
现状与发展   92篇
一般理论   2614篇
预防医学   362254篇
眼科学   102578篇
药学   307824篇
  26篇
中国医学   11938篇
肿瘤学   221316篇
  2021年   57093篇
  2020年   38095篇
  2019年   59418篇
  2018年   77341篇
  2017年   59982篇
  2016年   66361篇
  2015年   79231篇
  2014年   116099篇
  2013年   181467篇
  2012年   126111篇
  2011年   130852篇
  2010年   130007篇
  2009年   133043篇
  2008年   117102篇
  2007年   123659篇
  2006年   133281篇
  2005年   126528篇
  2004年   127445篇
  2003年   117424篇
  2002年   106639篇
  2001年   168136篇
  2000年   162842篇
  1999年   149577篇
  1998年   73028篇
  1997年   68739篇
  1996年   66452篇
  1995年   61790篇
  1994年   55430篇
  1993年   51329篇
  1992年   106890篇
  1991年   101765篇
  1990年   97532篇
  1989年   95126篇
  1988年   87393篇
  1987年   85529篇
  1986年   80428篇
  1985年   78511篇
  1984年   65489篇
  1983年   58271篇
  1982年   47258篇
  1981年   43897篇
  1980年   41115篇
  1979年   55130篇
  1978年   44782篇
  1977年   40017篇
  1976年   36862篇
  1975年   36823篇
  1974年   39633篇
  1973年   37768篇
  1972年   35386篇
排序方式: 共有10000条查询结果,搜索用时 0 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