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   4413378篇
  免费   357411篇
  国内免费   15558篇
耳鼻咽喉   62357篇
儿科学   136734篇
妇产科学   114669篇
基础医学   671655篇
口腔科学   121629篇
临床医学   401979篇
内科学   801045篇
皮肤病学   104965篇
神经病学   378399篇
特种医学   174709篇
外国民族医学   927篇
外科学   669964篇
综合类   128459篇
现状与发展   23篇
一般理论   2828篇
预防医学   375467篇
眼科学   104408篇
药学   311162篇
  27篇
中国医学   11588篇
肿瘤学   213353篇
  2021年   57185篇
  2020年   36384篇
  2019年   59922篇
  2018年   75153篇
  2017年   57330篇
  2016年   63800篇
  2015年   76964篇
  2014年   112385篇
  2013年   178426篇
  2012年   128611篇
  2011年   133009篇
  2010年   126978篇
  2009年   128963篇
  2008年   118937篇
  2007年   126614篇
  2006年   135605篇
  2005年   130738篇
  2004年   130964篇
  2003年   121150篇
  2002年   111122篇
  2001年   155330篇
  2000年   151417篇
  1999年   140428篇
  1998年   71980篇
  1997年   68313篇
  1996年   66115篇
  1995年   61890篇
  1994年   55995篇
  1993年   51950篇
  1992年   104176篇
  1991年   99548篇
  1990年   94558篇
  1989年   92203篇
  1988年   85757篇
  1987年   84236篇
  1986年   79936篇
  1985年   78390篇
  1984年   66372篇
  1983年   59213篇
  1982年   48446篇
  1981年   45172篇
  1980年   42427篇
  1979年   58171篇
  1978年   47292篇
  1977年   41802篇
  1976年   38861篇
  1975年   38052篇
  1974年   42661篇
  1973年   40772篇
  1972年   38213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