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   4224283篇
  免费   332999篇
  国内免费   17234篇
耳鼻咽喉   58087篇
儿科学   133048篇
妇产科学   109893篇
基础医学   642960篇
口腔科学   115022篇
临床医学   394662篇
内科学   756966篇
皮肤病学   108384篇
神经病学   354389篇
特种医学   164463篇
外国民族医学   590篇
外科学   642058篇
综合类   122011篇
现状与发展   91篇
一般理论   2470篇
预防医学   352471篇
眼科学   98336篇
药学   295642篇
  31篇
中国医学   12312篇
肿瘤学   210630篇
  2021年   57223篇
  2020年   38098篇
  2019年   59447篇
  2018年   76916篇
  2017年   59559篇
  2016年   65818篇
  2015年   79159篇
  2014年   116284篇
  2013年   181975篇
  2012年   119129篇
  2011年   123450篇
  2010年   128956篇
  2009年   131900篇
  2008年   108619篇
  2007年   114095篇
  2006年   123936篇
  2005年   117465篇
  2004年   117711篇
  2003年   107579篇
  2002年   96751篇
  2001年   152232篇
  2000年   146825篇
  1999年   136864篇
  1998年   71605篇
  1997年   67786篇
  1996年   65266篇
  1995年   60755篇
  1994年   54441篇
  1993年   50500篇
  1992年   98498篇
  1991年   94689篇
  1990年   90909篇
  1989年   88350篇
  1988年   81379篇
  1987年   79555篇
  1986年   75652篇
  1985年   74076篇
  1984年   62713篇
  1983年   55916篇
  1982年   46419篇
  1981年   43201篇
  1980年   40679篇
  1979年   53390篇
  1978年   43571篇
  1977年   39285篇
  1976年   36239篇
  1975年   35762篇
  1974年   38722篇
  1973年   37399篇
  1972年   35043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.
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   

9.
10.
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   
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