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   4442071篇
  免费   352539篇
  国内免费   16795篇
耳鼻咽喉   61062篇
儿科学   143295篇
妇产科学   118289篇
基础医学   676980篇
口腔科学   124344篇
临床医学   407531篇
内科学   799207篇
皮肤病学   107515篇
神经病学   373942篇
特种医学   174166篇
外国民族医学   827篇
外科学   666862篇
综合类   133080篇
现状与发展   23篇
一般理论   2633篇
预防医学   377462篇
眼科学   103585篇
药学   313076篇
  27篇
中国医学   12255篇
肿瘤学   215244篇
  2021年   56276篇
  2019年   58860篇
  2018年   74380篇
  2017年   56829篇
  2016年   62850篇
  2015年   76095篇
  2014年   110657篇
  2013年   176400篇
  2012年   123568篇
  2011年   128762篇
  2010年   126274篇
  2009年   127553篇
  2008年   114597篇
  2007年   121263篇
  2006年   130277篇
  2005年   125030篇
  2004年   126267篇
  2003年   115706篇
  2002年   105332篇
  2001年   157900篇
  2000年   153920篇
  1999年   142425篇
  1998年   71641篇
  1997年   67908篇
  1996年   65841篇
  1995年   61485篇
  1994年   55576篇
  1993年   51748篇
  1992年   107043篇
  1991年   103540篇
  1990年   99464篇
  1989年   96629篇
  1988年   89919篇
  1987年   88203篇
  1986年   84153篇
  1985年   82882篇
  1984年   69164篇
  1983年   61665篇
  1982年   49133篇
  1981年   45700篇
  1980年   42996篇
  1979年   61272篇
  1978年   48987篇
  1977年   43086篇
  1976年   40442篇
  1975年   39945篇
  1974年   44869篇
  1973年   43290篇
  1972年   40299篇
  1971年   37614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.
8.
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   

9.
10.
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   
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