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   4858284篇
  免费   378051篇
  国内免费   15018篇
耳鼻咽喉   68888篇
儿科学   156334篇
妇产科学   128822篇
基础医学   726946篇
口腔科学   133665篇
临床医学   452047篇
内科学   884756篇
皮肤病学   120784篇
神经病学   401109篇
特种医学   187809篇
外国民族医学   738篇
外科学   740626篇
综合类   134379篇
现状与发展   92篇
一般理论   2821篇
预防医学   407773篇
眼科学   115310篇
药学   338249篇
  30篇
中国医学   12251篇
肿瘤学   237924篇
  2021年   57322篇
  2019年   59459篇
  2018年   78177篇
  2017年   60598篇
  2016年   67042篇
  2015年   79545篇
  2014年   116638篇
  2013年   181717篇
  2012年   139705篇
  2011年   148255篇
  2010年   134274篇
  2009年   135390篇
  2008年   134283篇
  2007年   143395篇
  2006年   151447篇
  2005年   145826篇
  2004年   145209篇
  2003年   134831篇
  2002年   124039篇
  2001年   178163篇
  2000年   173728篇
  1999年   158335篇
  1998年   74419篇
  1997年   69578篇
  1996年   67659篇
  1995年   62821篇
  1994年   56735篇
  1993年   52556篇
  1992年   115955篇
  1991年   112600篇
  1990年   108483篇
  1989年   105903篇
  1988年   97770篇
  1987年   95919篇
  1986年   90829篇
  1985年   88735篇
  1984年   72999篇
  1983年   65055篇
  1982年   50170篇
  1981年   46682篇
  1980年   43838篇
  1979年   65152篇
  1978年   52031篇
  1977年   45347篇
  1976年   42424篇
  1975年   43471篇
  1974年   48764篇
  1973年   46937篇
  1972年   44274篇
  1971年   41273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