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   3547410篇
  免费   295198篇
  国内免费   14183篇
耳鼻咽喉   48035篇
儿科学   112969篇
妇产科学   92678篇
基础医学   563194篇
口腔科学   94242篇
临床医学   319078篇
内科学   632321篇
皮肤病学   93461篇
神经病学   305562篇
特种医学   138534篇
外国民族医学   491篇
外科学   542933篇
综合类   108085篇
现状与发展   24篇
一般理论   2359篇
预防医学   298643篇
眼科学   81051篇
药学   242685篇
  24篇
中国医学   10506篇
肿瘤学   169916篇
  2021年   55233篇
  2020年   35176篇
  2019年   58235篇
  2018年   71748篇
  2017年   54838篇
  2016年   60588篇
  2015年   74434篇
  2014年   108711篇
  2013年   173881篇
  2012年   99838篇
  2011年   100462篇
  2010年   118132篇
  2009年   122489篇
  2008年   87148篇
  2007年   90905篇
  2006年   101372篇
  2005年   96696篇
  2004年   98079篇
  2003年   88458篇
  2002年   77945篇
  2001年   118476篇
  2000年   111927篇
  1999年   107808篇
  1998年   66721篇
  1997年   64307篇
  1996年   62154篇
  1995年   57597篇
  1994年   51529篇
  1993年   48112篇
  1992年   74433篇
  1991年   70167篇
  1990年   65866篇
  1989年   64639篇
  1988年   59610篇
  1987年   58285篇
  1986年   54859篇
  1985年   54634篇
  1984年   49647篇
  1983年   45200篇
  1982年   42230篇
  1981年   39616篇
  1980年   37303篇
  1979年   40389篇
  1978年   35685篇
  1977年   32369篇
  1976年   29725篇
  1975年   28031篇
  1974年   29138篇
  1973年   28138篇
  1972年   26360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