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   3777915篇
  免费   300982篇
  国内免费   14699篇
耳鼻咽喉   50698篇
儿科学   119337篇
妇产科学   97666篇
基础医学   590413篇
口腔科学   102304篇
临床医学   340024篇
内科学   673533篇
皮肤病学   98475篇
神经病学   316694篇
特种医学   146904篇
外国民族医学   263篇
外科学   581143篇
综合类   113943篇
现状与发展   23篇
一般理论   2355篇
预防医学   310724篇
眼科学   89007篇
药学   260898篇
  26篇
中国医学   11418篇
肿瘤学   187748篇
  2021年   55677篇
  2020年   35426篇
  2019年   58539篇
  2018年   72790篇
  2017年   55530篇
  2016年   61394篇
  2015年   75172篇
  2014年   109385篇
  2013年   174815篇
  2012年   104551篇
  2011年   106385篇
  2010年   120790篇
  2009年   123689篇
  2008年   92950篇
  2007年   97530篇
  2006年   106983篇
  2005年   101761篇
  2004年   103413篇
  2003年   93350篇
  2002年   82699篇
  2001年   136075篇
  2000年   129622篇
  1999年   121986篇
  1998年   68585篇
  1997年   65259篇
  1996年   62989篇
  1995年   58537篇
  1994年   52527篇
  1993年   48894篇
  1992年   85049篇
  1991年   80963篇
  1990年   76666篇
  1989年   75103篇
  1988年   69017篇
  1987年   67200篇
  1986年   63539篇
  1985年   62757篇
  1984年   54874篇
  1983年   49576篇
  1982年   43615篇
  1981年   40986篇
  1980年   38456篇
  1979年   44840篇
  1978年   38233篇
  1977年   34915篇
  1976年   31960篇
  1975年   30783篇
  1974年   32477篇
  1973年   31176篇
  1972年   29031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