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   2549237篇
  免费   177786篇
  国内免费   6292篇
耳鼻咽喉   34014篇
儿科学   86264篇
妇产科学   68017篇
基础医学   360984篇
口腔科学   67634篇
临床医学   232089篇
内科学   493763篇
皮肤病学   50514篇
神经病学   208381篇
特种医学   98262篇
外国民族医学   913篇
外科学   374398篇
综合类   55345篇
现状与发展   2篇
一般理论   806篇
预防医学   210456篇
眼科学   55445篇
药学   185540篇
  13篇
中国医学   6139篇
肿瘤学   144336篇
  2019年   19697篇
  2018年   47877篇
  2017年   36790篇
  2016年   41667篇
  2015年   26673篇
  2014年   36300篇
  2013年   55018篇
  2012年   80980篇
  2011年   98823篇
  2010年   63874篇
  2009年   54415篇
  2008年   92186篇
  2007年   99678篇
  2006年   78348篇
  2005年   77826篇
  2004年   76619篇
  2003年   75243篇
  2002年   71281篇
  2001年   109092篇
  2000年   112947篇
  1999年   95059篇
  1998年   27088篇
  1997年   24515篇
  1996年   24378篇
  1995年   23253篇
  1994年   21972篇
  1993年   20460篇
  1992年   75869篇
  1991年   74386篇
  1990年   72115篇
  1989年   68653篇
  1988年   63501篇
  1987年   62377篇
  1986年   58750篇
  1985年   56198篇
  1984年   42414篇
  1983年   35902篇
  1982年   21277篇
  1981年   19156篇
  1979年   38252篇
  1978年   26993篇
  1977年   22454篇
  1976年   21573篇
  1975年   22681篇
  1974年   27106篇
  1973年   26356篇
  1972年   24264篇
  1971年   22364篇
  1970年   20998篇
  1969年   19044篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
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   
4.
5.
6.
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   

7.
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