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   2539865篇
  免费   222126篇
  国内免费   12828篇
耳鼻咽喉   34632篇
儿科学   79589篇
妇产科学   63079篇
基础医学   427690篇
口腔科学   67075篇
临床医学   226166篇
内科学   426609篇
皮肤病学   75293篇
神经病学   224761篇
特种医学   99765篇
外国民族医学   29篇
外科学   402822篇
综合类   82517篇
现状与发展   23篇
一般理论   2026篇
预防医学   218130篇
眼科学   57200篇
药学   169276篇
  23篇
中国医学   8011篇
肿瘤学   110103篇
  2022年   23297篇
  2021年   55131篇
  2020年   35149篇
  2019年   58087篇
  2018年   69641篇
  2017年   52853篇
  2016年   58235篇
  2015年   73082篇
  2014年   107232篇
  2013年   172327篇
  2012年   68493篇
  2011年   64211篇
  2010年   110018篇
  2009年   116558篇
  2008年   51210篇
  2007年   50616篇
  2006年   62766篇
  2005年   58317篇
  2004年   60746篇
  2003年   52110篇
  2002年   42128篇
  2001年   52428篇
  2000年   43423篇
  1999年   53836篇
  1998年   59739篇
  1997年   59060篇
  1996年   56647篇
  1995年   52255篇
  1994年   46441篇
  1993年   43578篇
  1992年   34563篇
  1991年   32203篇
  1990年   29600篇
  1989年   30148篇
  1988年   28215篇
  1987年   27495篇
  1986年   26188篇
  1985年   27706篇
  1984年   30752篇
  1983年   29722篇
  1982年   35617篇
  1981年   34134篇
  1980年   32268篇
  1979年   23012篇
  1978年   24462篇
  1977年   23551篇
  1976年   21303篇
  1975年   18822篇
  1974年   17331篇
  1973年   16572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