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   3450796篇
  免费   281727篇
  国内免费   13373篇
耳鼻咽喉   46997篇
儿科学   109508篇
妇产科学   89627篇
基础医学   549113篇
口腔科学   93096篇
临床医学   314420篇
内科学   609214篇
皮肤病学   91353篇
神经病学   295044篇
特种医学   134523篇
外国民族医学   288篇
外科学   526291篇
综合类   102446篇
现状与发展   24篇
一般理论   2396篇
预防医学   295406篇
眼科学   78265篇
药学   235564篇
  26篇
中国医学   9349篇
肿瘤学   162946篇
  2021年   55246篇
  2020年   35155篇
  2019年   58116篇
  2018年   71553篇
  2017年   54532篇
  2016年   59949篇
  2015年   74089篇
  2014年   108186篇
  2013年   173379篇
  2012年   95297篇
  2011年   95825篇
  2010年   117262篇
  2009年   121418篇
  2008年   82484篇
  2007年   86037篇
  2006年   95756篇
  2005年   91390篇
  2004年   92849篇
  2003年   83423篇
  2002年   73176篇
  2001年   102579篇
  2000年   95241篇
  1999年   95275篇
  1998年   64566篇
  1997年   62607篇
  1996年   60767篇
  1995年   56201篇
  1994年   50447篇
  1993年   47127篇
  1992年   67608篇
  1991年   64878篇
  1990年   61504篇
  1989年   60693篇
  1988年   56514篇
  1987年   55265篇
  1986年   52686篇
  1985年   52274篇
  1984年   48197篇
  1983年   44346篇
  1982年   41727篇
  1981年   39441篇
  1980年   37175篇
  1979年   40707篇
  1978年   36295篇
  1977年   32857篇
  1976年   30153篇
  1975年   29028篇
  1974年   30519篇
  1973年   29637篇
  1972年   27881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.
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