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   3508128篇
  免费   281972篇
  国内免费   14640篇
耳鼻咽喉   48567篇
儿科学   107315篇
妇产科学   91784篇
基础医学   550159篇
口腔科学   97856篇
临床医学   309255篇
内科学   621532篇
皮肤病学   94182篇
神经病学   300103篇
特种医学   139348篇
外国民族医学   457篇
外科学   545151篇
综合类   107469篇
现状与发展   24篇
一般理论   2271篇
预防医学   285934篇
眼科学   79977篇
药学   244208篇
  23篇
中国医学   10397篇
肿瘤学   168728篇
  2021年   56324篇
  2020年   35970篇
  2019年   58992篇
  2018年   71233篇
  2017年   54476篇
  2016年   60065篇
  2015年   74144篇
  2014年   108327篇
  2013年   173555篇
  2012年   90318篇
  2011年   89556篇
  2010年   115791篇
  2009年   121122篇
  2008年   77416篇
  2007年   80899篇
  2006年   91706篇
  2005年   87140篇
  2004年   89379篇
  2003年   80757篇
  2002年   71034篇
  2001年   109587篇
  2000年   102627篇
  1999年   101581篇
  1998年   65537篇
  1997年   63486篇
  1996年   60996篇
  1995年   56382篇
  1994年   50676篇
  1993年   47237篇
  1992年   71919篇
  1991年   68253篇
  1990年   65247篇
  1989年   64626篇
  1988年   60418篇
  1987年   59083篇
  1986年   56614篇
  1985年   56259篇
  1984年   50764篇
  1983年   46028篇
  1982年   42603篇
  1981年   40087篇
  1980年   37878篇
  1979年   43158篇
  1978年   37605篇
  1977年   34486篇
  1976年   31251篇
  1975年   30951篇
  1974年   32612篇
  1973年   31270篇
  1972年   29637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.
8.
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   

9.
10.
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   
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