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   3599709篇
  免费   290190篇
  国内免费   16162篇
耳鼻咽喉   48240篇
儿科学   114203篇
妇产科学   93608篇
基础医学   570567篇
口腔科学   96369篇
临床医学   332489篇
内科学   634371篇
皮肤病学   92302篇
神经病学   310060篇
特种医学   138057篇
外国民族医学   402篇
外科学   538742篇
综合类   107271篇
现状与发展   23篇
一般理论   2387篇
预防医学   316006篇
眼科学   81041篇
药学   246323篇
  27篇
中国医学   10695篇
肿瘤学   172878篇
  2021年   56286篇
  2020年   35793篇
  2019年   59040篇
  2018年   73194篇
  2017年   55865篇
  2016年   61540篇
  2015年   75485篇
  2014年   110061篇
  2013年   176012篇
  2012年   106085篇
  2011年   107743篇
  2010年   121214篇
  2009年   124478篇
  2008年   93047篇
  2007年   96936篇
  2006年   106836篇
  2005年   101585篇
  2004年   102137篇
  2003年   92166篇
  2002年   81391篇
  2001年   110465篇
  2000年   103728篇
  1999年   102044篇
  1998年   66334篇
  1997年   64017篇
  1996年   61694篇
  1995年   57253篇
  1994年   51383篇
  1993年   47907篇
  1992年   72485篇
  1991年   69420篇
  1990年   65938篇
  1989年   64191篇
  1988年   59679篇
  1987年   58157篇
  1986年   55463篇
  1985年   55283篇
  1984年   49875篇
  1983年   45463篇
  1982年   42269篇
  1981年   39808篇
  1980年   37402篇
  1979年   41355篇
  1978年   36247篇
  1977年   32704篇
  1976年   30522篇
  1975年   28759篇
  1974年   30304篇
  1973年   29210篇
  1972年   27332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.
8.
9.
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   

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