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   4368055篇
  免费   338907篇
  国内免费   14791篇
耳鼻咽喉   60472篇
儿科学   139651篇
妇产科学   114471篇
基础医学   667785篇
口腔科学   118412篇
临床医学   397792篇
内科学   792642篇
皮肤病学   107979篇
神经病学   369086篇
特种医学   169678篇
外国民族医学   753篇
外科学   657746篇
综合类   121346篇
现状与发展   24篇
一般理论   2621篇
预防医学   360908篇
眼科学   101218篇
药学   308110篇
  26篇
中国医学   11951篇
肿瘤学   219082篇
  2021年   56416篇
  2020年   35934篇
  2019年   59008篇
  2018年   74683篇
  2017年   57143篇
  2016年   63287篇
  2015年   76265篇
  2014年   110536篇
  2013年   176135篇
  2012年   125244篇
  2011年   130032篇
  2010年   126253篇
  2009年   127877篇
  2008年   116020篇
  2007年   123323篇
  2006年   132055篇
  2005年   126018篇
  2004年   127262篇
  2003年   117348篇
  2002年   106593篇
  2001年   166964篇
  2000年   162032篇
  1999年   148702篇
  1998年   71716篇
  1997年   67637篇
  1996年   65649篇
  1995年   61080篇
  1994年   55007篇
  1993年   51034篇
  1992年   106640篇
  1991年   101398篇
  1990年   97255篇
  1989年   94827篇
  1988年   87155篇
  1987年   85321篇
  1986年   80212篇
  1985年   78358篇
  1984年   65410篇
  1983年   58205篇
  1982年   47201篇
  1981年   43867篇
  1980年   41081篇
  1979年   55111篇
  1978年   44758篇
  1977年   39984篇
  1976年   36844篇
  1975年   36807篇
  1974年   39618篇
  1973年   37763篇
  1972年   35366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