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   3238423篇
  免费   265596篇
  国内免费   13520篇
耳鼻咽喉   44504篇
儿科学   97107篇
妇产科学   81225篇
基础医学   519365篇
口腔科学   88778篇
临床医学   288884篇
内科学   565974篇
皮肤病学   87117篇
神经病学   277184篇
特种医学   127130篇
外国民族医学   116篇
外科学   511614篇
综合类   96264篇
现状与发展   23篇
一般理论   2184篇
预防医学   265702篇
眼科学   73878篇
药学   224272篇
  24篇
中国医学   9538篇
肿瘤学   156656篇
  2021年   54720篇
  2020年   34920篇
  2019年   57875篇
  2018年   70396篇
  2017年   53647篇
  2016年   59114篇
  2015年   73574篇
  2014年   107702篇
  2013年   172807篇
  2012年   84131篇
  2011年   82383篇
  2010年   114112篇
  2009年   119439篇
  2008年   70572篇
  2007年   72052篇
  2006年   83693篇
  2005年   79036篇
  2004年   81059篇
  2003年   72250篇
  2002年   62405篇
  2001年   102611篇
  2000年   95535篇
  1999年   95604篇
  1998年   64471篇
  1997年   62441篇
  1996年   60186篇
  1995年   55667篇
  1994年   49655篇
  1993年   46412篇
  1992年   66368篇
  1991年   62700篇
  1990年   59218篇
  1989年   58785篇
  1988年   54226篇
  1987年   52920篇
  1986年   49848篇
  1985年   50293篇
  1984年   45971篇
  1983年   42343篇
  1982年   40558篇
  1981年   38241篇
  1980年   35964篇
  1979年   36918篇
  1978年   33074篇
  1977年   30841篇
  1976年   27634篇
  1975年   26195篇
  1974年   26572篇
  1973年   25241篇
  1972年   23732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.
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.
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