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   3280482篇
  免费   264909篇
  国内免费   14216篇
耳鼻咽喉   45629篇
儿科学   103564篇
妇产科学   84350篇
基础医学   522647篇
口腔科学   88775篇
临床医学   285960篇
内科学   585157篇
皮肤病学   89223篇
神经病学   281727篇
特种医学   127625篇
外国民族医学   363篇
外科学   510754篇
综合类   97508篇
现状与发展   23篇
一般理论   2208篇
预防医学   276266篇
眼科学   73871篇
药学   222921篇
  22篇
中国医学   9937篇
肿瘤学   151077篇
  2022年   23978篇
  2021年   57234篇
  2020年   36047篇
  2019年   60180篇
  2018年   73633篇
  2017年   55701篇
  2016年   61070篇
  2015年   75323篇
  2014年   110015篇
  2013年   176096篇
  2012年   93279篇
  2011年   93737篇
  2010年   118402篇
  2009年   122232篇
  2008年   79087篇
  2007年   81812篇
  2006年   91893篇
  2005年   87777篇
  2004年   88879篇
  2003年   79859篇
  2002年   69643篇
  2001年   92522篇
  2000年   85634篇
  1999年   87656篇
  1998年   63795篇
  1997年   62034篇
  1996年   59642篇
  1995年   55063篇
  1994年   49257篇
  1993年   46003篇
  1992年   59522篇
  1991年   56046篇
  1990年   53195篇
  1989年   52441篇
  1988年   48907篇
  1987年   47759篇
  1986年   45845篇
  1985年   45939篇
  1984年   43385篇
  1983年   40177篇
  1982年   39945篇
  1981年   37678篇
  1980年   35655篇
  1979年   35397篇
  1978年   32331篇
  1977年   29840篇
  1976年   27445篇
  1975年   26011篇
  1974年   26557篇
  1973年   25433篇
排序方式: 共有10000条查询结果,搜索用时 9 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.
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