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   4262848篇
  免费   340356篇
  国内免费   14487篇
耳鼻咽喉   59007篇
儿科学   132082篇
妇产科学   111671篇
基础医学   651650篇
口腔科学   121237篇
临床医学   381207篇
内科学   768642篇
皮肤病学   104954篇
神经病学   356986篇
特种医学   169532篇
外国民族医学   564篇
外科学   659506篇
综合类   125000篇
现状与发展   23篇
一般理论   2516篇
预防医学   347475篇
眼科学   99776篇
药学   303437篇
  24篇
中国医学   11549篇
肿瘤学   210853篇
  2021年   55499篇
  2019年   58330篇
  2018年   72770篇
  2017年   55600篇
  2016年   61536篇
  2015年   75155篇
  2014年   109516篇
  2013年   174718篇
  2012年   110712篇
  2011年   113334篇
  2010年   121809篇
  2009年   124794篇
  2008年   101310篇
  2007年   106518篇
  2006年   116625篇
  2005年   111606篇
  2004年   113801篇
  2003年   103928篇
  2002年   93847篇
  2001年   157582篇
  2000年   153577篇
  1999年   142771篇
  1998年   70754篇
  1997年   67169篇
  1996年   65157篇
  1995年   60653篇
  1994年   54652篇
  1993年   50920篇
  1992年   106598篇
  1991年   102255篇
  1990年   98163篇
  1989年   96211篇
  1988年   89038篇
  1987年   87367篇
  1986年   82864篇
  1985年   82049篇
  1984年   68058篇
  1983年   60873篇
  1982年   48497篇
  1981年   45029篇
  1980年   42253篇
  1979年   59630篇
  1978年   47491篇
  1977年   42494篇
  1976年   38954篇
  1975年   38757篇
  1974年   42844篇
  1973年   41116篇
  1972年   38386篇
  1971年   35785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.
Graefe's Archive for Clinical and Experimental Ophthalmology - The published online version contains mistake as the author's first name and last name have been interchanged as "Hild...  相似文献   
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