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   3559494篇
  免费   286991篇
  国内免费   16117篇
耳鼻咽喉   48030篇
儿科学   112935篇
妇产科学   92389篇
基础医学   564271篇
口腔科学   96321篇
临床医学   326722篇
内科学   629020篇
皮肤病学   92214篇
神经病学   305986篇
特种医学   136369篇
外国民族医学   394篇
外科学   536644篇
综合类   106591篇
现状与发展   23篇
一般理论   2304篇
预防医学   308106篇
眼科学   80294篇
药学   243865篇
  27篇
中国医学   10699篇
肿瘤学   169398篇
  2021年   56158篇
  2020年   35705篇
  2019年   59082篇
  2018年   73397篇
  2017年   55692篇
  2016年   61246篇
  2015年   75624篇
  2014年   109989篇
  2013年   176070篇
  2012年   104260篇
  2011年   105777篇
  2010年   120871篇
  2009年   123696篇
  2008年   90725篇
  2007年   94242篇
  2006年   104553篇
  2005年   99473篇
  2004年   100231篇
  2003年   90202篇
  2002年   79625篇
  2001年   108519篇
  2000年   102213篇
  1999年   100178篇
  1998年   65810篇
  1997年   63604篇
  1996年   61291篇
  1995年   56890篇
  1994年   51040篇
  1993年   47628篇
  1992年   70873篇
  1991年   67955篇
  1990年   64509篇
  1989年   62874篇
  1988年   58442篇
  1987年   57049篇
  1986年   54465篇
  1985年   54333篇
  1984年   49309篇
  1983年   44915篇
  1982年   42052篇
  1981年   39627篇
  1980年   37255篇
  1979年   40792篇
  1978年   35946篇
  1977年   32488篇
  1976年   30331篇
  1975年   28561篇
  1974年   30043篇
  1973年   28938篇
  1972年   27075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.
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