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   4814303篇
  免费   369546篇
  国内免费   14717篇
耳鼻咽喉   68404篇
儿科学   156442篇
妇产科学   128146篇
基础医学   724951篇
口腔科学   130899篇
临床医学   436681篇
内科学   876961篇
皮肤病学   116692篇
神经病学   395246篇
特种医学   187678篇
外国民族医学   1110篇
外科学   733673篇
综合类   134577篇
现状与发展   23篇
一般理论   2748篇
预防医学   401663篇
眼科学   114752篇
药学   339989篇
  26篇
中国医学   12530篇
肿瘤学   235375篇
  2021年   56401篇
  2019年   58983篇
  2018年   75391篇
  2017年   57654篇
  2016年   63952篇
  2015年   76460篇
  2014年   110921篇
  2013年   176319篇
  2012年   136731篇
  2011年   144969篇
  2010年   130216篇
  2009年   130002篇
  2008年   131212篇
  2007年   141237篇
  2006年   148946篇
  2005年   143747篇
  2004年   143834篇
  2003年   133981篇
  2002年   123324篇
  2001年   181883篇
  2000年   178576篇
  1999年   162312篇
  1998年   74244篇
  1997年   69015篇
  1996年   67346篇
  1995年   62604篇
  1994年   56747篇
  1993年   52627篇
  1992年   118905篇
  1991年   115680篇
  1990年   111421篇
  1989年   108050篇
  1988年   99709篇
  1987年   98191篇
  1986年   92231篇
  1985年   90494篇
  1984年   74036篇
  1983年   65611篇
  1982年   50225篇
  1981年   46688篇
  1980年   43812篇
  1979年   65194篇
  1978年   51620篇
  1977年   45260篇
  1976年   42364篇
  1975年   43418篇
  1974年   48086篇
  1973年   46226篇
  1972年   43226篇
  1971年   40135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.
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