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   3970055篇
  免费   311164篇
  国内免费   16564篇
耳鼻咽喉   53870篇
儿科学   123478篇
妇产科学   103141篇
基础医学   615398篇
口腔科学   108909篇
临床医学   356357篇
内科学   711472篇
皮肤病学   101755篇
神经病学   330507篇
特种医学   153411篇
外国民族医学   337篇
外科学   610437篇
综合类   120082篇
现状与发展   24篇
一般理论   2398篇
预防医学   319538篇
眼科学   94559篇
药学   277856篇
  27篇
中国医学   12829篇
肿瘤学   201398篇
  2021年   55966篇
  2020年   35625篇
  2019年   58761篇
  2018年   73411篇
  2017年   56065篇
  2016年   62047篇
  2015年   75758篇
  2014年   110024篇
  2013年   175476篇
  2012年   109394篇
  2011年   111814篇
  2010年   122221篇
  2009年   124727篇
  2008年   98167篇
  2007年   103673篇
  2006年   112554篇
  2005年   107000篇
  2004年   108249篇
  2003年   98151篇
  2002年   87267篇
  2001年   150726篇
  2000年   144786篇
  1999年   134714篇
  1998年   70593篇
  1997年   66619篇
  1996年   63907篇
  1995年   59437篇
  1994年   53340篇
  1993年   49640篇
  1992年   94015篇
  1991年   89443篇
  1990年   84818篇
  1989年   83323篇
  1988年   76322篇
  1987年   74344篇
  1986年   70036篇
  1985年   68879篇
  1984年   58962篇
  1983年   52884篇
  1982年   44896篇
  1981年   42070篇
  1980年   39423篇
  1979年   48352篇
  1978年   40317篇
  1977年   36822篇
  1976年   33393篇
  1975年   32553篇
  1974年   34593篇
  1973年   33171篇
  1972年   30992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