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   1977094篇
  免费   155926篇
  国内免费   3567篇
耳鼻咽喉   29182篇
儿科学   64670篇
妇产科学   55394篇
基础医学   283355篇
口腔科学   55371篇
临床医学   172816篇
内科学   387256篇
皮肤病学   42077篇
神经病学   157488篇
特种医学   79060篇
外国民族医学   825篇
外科学   306287篇
综合类   47955篇
现状与发展   3篇
一般理论   601篇
预防医学   151955篇
眼科学   45808篇
药学   147501篇
  2篇
中国医学   3788篇
肿瘤学   105193篇
  2018年   19028篇
  2016年   16142篇
  2015年   18529篇
  2014年   26211篇
  2013年   40068篇
  2012年   54590篇
  2011年   57557篇
  2010年   34275篇
  2009年   32401篇
  2008年   54957篇
  2007年   59318篇
  2006年   59413篇
  2005年   58072篇
  2004年   56940篇
  2003年   55143篇
  2002年   53735篇
  2001年   90547篇
  2000年   93530篇
  1999年   79361篇
  1998年   22581篇
  1997年   20550篇
  1996年   20697篇
  1995年   19591篇
  1994年   18704篇
  1993年   17452篇
  1992年   64692篇
  1991年   63266篇
  1990年   61689篇
  1989年   59073篇
  1988年   54839篇
  1987年   53998篇
  1986年   50612篇
  1985年   48853篇
  1984年   37169篇
  1983年   31516篇
  1982年   18943篇
  1981年   17375篇
  1980年   15876篇
  1979年   35177篇
  1978年   24886篇
  1977年   21052篇
  1976年   19549篇
  1975年   21304篇
  1974年   25424篇
  1973年   24522篇
  1972年   22941篇
  1971年   21025篇
  1970年   19915篇
  1969年   18734篇
  1968年   16963篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
21.
22.
23.
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   
24.
25.
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   

26.
27.
28.
29.
30.
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