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   3268078篇
  免费   266598篇
  国内免费   13586篇
耳鼻咽喉   45051篇
儿科学   97863篇
妇产科学   81668篇
基础医学   522244篇
口腔科学   89522篇
临床医学   291254篇
内科学   572063篇
皮肤病学   87370篇
神经病学   280045篇
特种医学   128086篇
外国民族医学   110篇
外科学   517254篇
综合类   96698篇
现状与发展   23篇
一般理论   2221篇
预防医学   267729篇
眼科学   74589篇
药学   226405篇
  24篇
中国医学   9619篇
肿瘤学   158424篇
  2021年   55006篇
  2020年   35031篇
  2019年   58043篇
  2018年   70825篇
  2017年   53884篇
  2016年   59423篇
  2015年   73763篇
  2014年   108008篇
  2013年   173201篇
  2012年   86714篇
  2011年   85386篇
  2010年   114990篇
  2009年   119917篇
  2008年   73246篇
  2007年   75133篇
  2006年   86513篇
  2005年   81851篇
  2004年   83818篇
  2003年   74771篇
  2002年   64733篇
  2001年   102722篇
  2000年   95671篇
  1999年   95712篇
  1998年   64557篇
  1997年   62525篇
  1996年   60272篇
  1995年   55725篇
  1994年   49694篇
  1993年   46469篇
  1992年   66424篇
  1991年   62762篇
  1990年   59268篇
  1989年   58836篇
  1988年   54268篇
  1987年   52980篇
  1986年   49899篇
  1985年   50348篇
  1984年   46026篇
  1983年   42374篇
  1982年   40594篇
  1981年   38270篇
  1980年   36009篇
  1979年   36947篇
  1978年   33094篇
  1977年   30859篇
  1976年   27669篇
  1975年   26222篇
  1974年   26600篇
  1973年   25288篇
  1972年   23768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.
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