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   3469919篇
  免费   295750篇
  国内免费   13914篇
耳鼻咽喉   47549篇
儿科学   109630篇
妇产科学   88310篇
基础医学   551421篇
口腔科学   93404篇
临床医学   316460篇
内科学   614449篇
皮肤病学   89519篇
神经病学   299202篇
特种医学   138272篇
外国民族医学   300篇
外科学   535457篇
综合类   106211篇
现状与发展   24篇
一般理论   2298篇
预防医学   296320篇
眼科学   78955篇
药学   238614篇
  24篇
中国医学   9574篇
肿瘤学   163590篇
  2021年   55271篇
  2020年   35206篇
  2019年   58259篇
  2018年   71629篇
  2017年   54506篇
  2016年   60185篇
  2015年   74280篇
  2014年   108658篇
  2013年   173856篇
  2012年   93779篇
  2011年   93865篇
  2010年   117110篇
  2009年   121367篇
  2008年   80817篇
  2007年   84230篇
  2006年   94711篇
  2005年   90184篇
  2004年   92023篇
  2003年   82898篇
  2002年   71980篇
  2001年   111085篇
  2000年   104687篇
  1999年   102282篇
  1998年   66267篇
  1997年   63855篇
  1996年   62041篇
  1995年   57796篇
  1994年   51797篇
  1993年   48397篇
  1992年   73528篇
  1991年   70245篇
  1990年   66573篇
  1989年   65151篇
  1988年   60408篇
  1987年   59078篇
  1986年   55889篇
  1985年   56004篇
  1984年   50445篇
  1983年   45783篇
  1982年   42570篇
  1981年   40006篇
  1980年   37693篇
  1979年   41777篇
  1978年   36574篇
  1977年   33129篇
  1976年   30472篇
  1975年   29038篇
  1974年   30280篇
  1973年   29040篇
  1972年   27044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