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   4186161篇
  免费   329242篇
  国内免费   14850篇
耳鼻咽喉   57018篇
儿科学   132095篇
妇产科学   109924篇
基础医学   644474篇
口腔科学   113836篇
临床医学   378320篇
内科学   753583篇
皮肤病学   106217篇
神经病学   350417篇
特种医学   164078篇
外国民族医学   689篇
外科学   635844篇
综合类   122158篇
现状与发展   24篇
一般理论   2493篇
预防医学   344913篇
眼科学   97270篇
药学   295805篇
  27篇
中国医学   12127篇
肿瘤学   208941篇
  2021年   55999篇
  2020年   35612篇
  2019年   58632篇
  2018年   73470篇
  2017年   56331篇
  2016年   62412篇
  2015年   75719篇
  2014年   110164篇
  2013年   175508篇
  2012年   116383篇
  2011年   119986篇
  2010年   123529篇
  2009年   126024篇
  2008年   106024篇
  2007年   112224篇
  2006年   121529篇
  2005年   116208篇
  2004年   116992篇
  2003年   107241篇
  2002年   96407篇
  2001年   159111篇
  2000年   154346篇
  1999年   142263篇
  1998年   70976篇
  1997年   67240篇
  1996年   65122篇
  1995年   60560篇
  1994年   54348篇
  1993年   50637篇
  1992年   100976篇
  1991年   95976篇
  1990年   91682篇
  1989年   89374篇
  1988年   82071篇
  1987年   80069篇
  1986年   75645篇
  1985年   73986篇
  1984年   62885篇
  1983年   56034篇
  1982年   46491篇
  1981年   43069篇
  1980年   40673篇
  1979年   52817篇
  1978年   43198篇
  1977年   39060篇
  1976年   35542篇
  1975年   35167篇
  1974年   37722篇
  1973年   36425篇
  1972年   34275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.
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