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   2562846篇
  免费   225500篇
  国内免费   15863篇
耳鼻咽喉   34839篇
儿科学   79297篇
妇产科学   62899篇
基础医学   431436篇
口腔科学   67147篇
临床医学   228971篇
内科学   429443篇
皮肤病学   75813篇
神经病学   226548篇
特种医学   101011篇
外国民族医学   35篇
外科学   403163篇
综合类   88772篇
现状与发展   27篇
一般理论   2009篇
预防医学   219010篇
眼科学   57366篇
药学   172847篇
  40篇
中国医学   10477篇
肿瘤学   113059篇
  2022年   23967篇
  2021年   55843篇
  2020年   35698篇
  2019年   58546篇
  2018年   69845篇
  2017年   53263篇
  2016年   58666篇
  2015年   74017篇
  2014年   108304篇
  2013年   173045篇
  2012年   69375篇
  2011年   65161篇
  2010年   110806篇
  2009年   117133篇
  2008年   51699篇
  2007年   51065篇
  2006年   63189篇
  2005年   58861篇
  2004年   60894篇
  2003年   52542篇
  2002年   42452篇
  2001年   54959篇
  2000年   45762篇
  1999年   55739篇
  1998年   60403篇
  1997年   59545篇
  1996年   56930篇
  1995年   52540篇
  1994年   46671篇
  1993年   43748篇
  1992年   35490篇
  1991年   33016篇
  1990年   30345篇
  1989年   30957篇
  1988年   28942篇
  1987年   28156篇
  1986年   26816篇
  1985年   28223篇
  1984年   31062篇
  1983年   29979篇
  1982年   35737篇
  1981年   34220篇
  1980年   32342篇
  1979年   23166篇
  1978年   24503篇
  1977年   23589篇
  1976年   21337篇
  1975年   18858篇
  1974年   17375篇
  1973年   16629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.
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