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   3163988篇
  免费   261170篇
  国内免费   13798篇
耳鼻咽喉   43704篇
儿科学   100073篇
妇产科学   81456篇
基础医学   507808篇
口腔科学   84291篇
临床医学   278513篇
内科学   556850篇
皮肤病学   85905篇
神经病学   272536篇
特种医学   125425篇
外国民族医学   361篇
外科学   497316篇
综合类   96883篇
现状与发展   23篇
一般理论   2168篇
预防医学   263997篇
眼科学   71381篇
药学   214521篇
  22篇
中国医学   9219篇
肿瘤学   146504篇
  2021年   54708篇
  2020年   34901篇
  2019年   57828篇
  2018年   70255篇
  2017年   53583篇
  2016年   59123篇
  2015年   73475篇
  2014年   107487篇
  2013年   172524篇
  2012年   84264篇
  2011年   83296篇
  2010年   114274篇
  2009年   119533篇
  2008年   71112篇
  2007年   73132篇
  2006年   84178篇
  2005年   80153篇
  2004年   82065篇
  2003年   73449篇
  2002年   63538篇
  2001年   89276篇
  2000年   81895篇
  1999年   85003篇
  1998年   63444篇
  1997年   61786篇
  1996年   59489篇
  1995年   54940篇
  1994年   49124篇
  1993年   45917篇
  1992年   58594篇
  1991年   55271篇
  1990年   52455篇
  1989年   51840篇
  1988年   48374篇
  1987年   47293篇
  1986年   45336篇
  1985年   45534篇
  1984年   43119篇
  1983年   39926篇
  1982年   39841篇
  1981年   37596篇
  1980年   35558篇
  1979年   35105篇
  1978年   32160篇
  1977年   29710篇
  1976年   27285篇
  1975年   25801篇
  1974年   26289篇
  1973年   25135篇
  1972年   23662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