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   3509939篇
  免费   285281篇
  国内免费   15978篇
耳鼻咽喉   47356篇
儿科学   111829篇
妇产科学   91582篇
基础医学   557444篇
口腔科学   94104篇
临床医学   324755篇
内科学   616904篇
皮肤病学   90920篇
神经病学   301394篇
特种医学   135299篇
外国民族医学   392篇
外科学   529642篇
综合类   106406篇
现状与发展   23篇
一般理论   2294篇
预防医学   303793篇
眼科学   79400篇
药学   240431篇
  27篇
中国医学   10474篇
肿瘤学   166729篇
  2021年   55516篇
  2020年   35394篇
  2019年   58403篇
  2018年   72213篇
  2017年   55108篇
  2016年   60678篇
  2015年   74684篇
  2014年   109004篇
  2013年   174609篇
  2012年   99664篇
  2011年   100904篇
  2010年   119193篇
  2009年   122683篇
  2008年   86551篇
  2007年   89932篇
  2006年   100148篇
  2005年   95283篇
  2004年   96421篇
  2003年   86713篇
  2002年   76315篇
  2001年   107479篇
  2000年   100794篇
  1999年   99538篇
  1998年   65733篇
  1997年   63587篇
  1996年   61277篇
  1995年   56884篇
  1994年   51025篇
  1993年   47609篇
  1992年   70797篇
  1991年   67921篇
  1990年   64465篇
  1989年   62835篇
  1988年   58431篇
  1987年   57017篇
  1986年   54423篇
  1985年   54300篇
  1984年   49268篇
  1983年   44890篇
  1982年   42022篇
  1981年   39601篇
  1980年   37234篇
  1979年   40771篇
  1978年   35933篇
  1977年   32476篇
  1976年   30315篇
  1975年   28554篇
  1974年   30029篇
  1973年   28926篇
  1972年   27070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