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   3575313篇
  免费   295496篇
  国内免费   14301篇
耳鼻咽喉   48673篇
儿科学   114096篇
妇产科学   93259篇
基础医学   566298篇
口腔科学   96094篇
临床医学   319913篇
内科学   639891篇
皮肤病学   94537篇
神经病学   307488篇
特种医学   138744篇
外国民族医学   491篇
外科学   546496篇
综合类   107916篇
现状与发展   24篇
一般理论   2353篇
预防医学   301197篇
眼科学   81657篇
药学   244409篇
  22篇
中国医学   10717篇
肿瘤学   170835篇
  2021年   56376篇
  2020年   35715篇
  2019年   59193篇
  2018年   73070篇
  2017年   55623篇
  2016年   61352篇
  2015年   75155篇
  2014年   109596篇
  2013年   175116篇
  2012年   102563篇
  2011年   103705篇
  2010年   119463篇
  2009年   123274篇
  2008年   89412篇
  2007年   93088篇
  2006年   103142篇
  2005年   98332篇
  2004年   99598篇
  2003年   89909篇
  2002年   79057篇
  2001年   119151篇
  2000年   112901篇
  1999年   108254篇
  1998年   66757篇
  1997年   64307篇
  1996年   62133篇
  1995年   57576篇
  1994年   51499篇
  1993年   48062篇
  1992年   74335篇
  1991年   70003篇
  1990年   65737篇
  1989年   64494篇
  1988年   59477篇
  1987年   58182篇
  1986年   54701篇
  1985年   54485篇
  1984年   49544篇
  1983年   45125篇
  1982年   42195篇
  1981年   39567篇
  1980年   37254篇
  1979年   40276篇
  1978年   35606篇
  1977年   32291篇
  1976年   29630篇
  1975年   27965篇
  1974年   29031篇
  1973年   28064篇
  1972年   26252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