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   4953259篇
  免费   382260篇
  国内免费   15730篇
耳鼻咽喉   69283篇
儿科学   158351篇
妇产科学   130220篇
基础医学   742379篇
口腔科学   137384篇
临床医学   455063篇
内科学   904841篇
皮肤病学   117269篇
神经病学   414324篇
特种医学   193851篇
外国民族医学   968篇
外科学   742441篇
综合类   139043篇
现状与发展   24篇
一般理论   2809篇
预防医学   413413篇
眼科学   115931篇
药学   352549篇
  26篇
中国医学   13017篇
肿瘤学   248063篇
  2021年   57236篇
  2019年   59581篇
  2018年   76485篇
  2017年   58601篇
  2016年   65101篇
  2015年   77569篇
  2014年   112080篇
  2013年   177849篇
  2012年   141051篇
  2011年   148984篇
  2010年   131401篇
  2009年   131309篇
  2008年   134165篇
  2007年   144099篇
  2006年   151596篇
  2005年   145811篇
  2004年   146528篇
  2003年   136318篇
  2002年   125001篇
  2001年   197346篇
  2000年   194293篇
  1999年   174372篇
  1998年   75966篇
  1997年   70667篇
  1996年   68837篇
  1995年   64398篇
  1994年   58244篇
  1993年   54040篇
  1992年   128587篇
  1991年   123405篇
  1990年   118842篇
  1989年   115392篇
  1988年   106297篇
  1987年   104344篇
  1986年   98435篇
  1985年   95853篇
  1984年   77809篇
  1983年   68476篇
  1982年   51635篇
  1981年   47727篇
  1980年   44740篇
  1979年   67696篇
  1978年   53051篇
  1977年   46619篇
  1976年   43242篇
  1975年   44068篇
  1974年   48997篇
  1973年   46931篇
  1972年   43932篇
  1971年   40622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