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   3532038篇
  免费   294116篇
  国内免费   14181篇
耳鼻咽喉   47900篇
儿科学   112584篇
妇产科学   92385篇
基础医学   561172篇
口腔科学   93810篇
临床医学   317338篇
内科学   629481篇
皮肤病学   93290篇
神经病学   303838篇
特种医学   137874篇
外国民族医学   490篇
外科学   541167篇
综合类   107661篇
现状与发展   24篇
一般理论   2337篇
预防医学   297188篇
眼科学   80596篇
药学   241624篇
  22篇
中国医学   10482篇
肿瘤学   169072篇
  2021年   55165篇
  2020年   35130篇
  2019年   58152篇
  2018年   71608篇
  2017年   54712篇
  2016年   60484篇
  2015年   74345篇
  2014年   108576篇
  2013年   173665篇
  2012年   98911篇
  2011年   99396篇
  2010年   117859篇
  2009年   122259篇
  2008年   86206篇
  2007年   89822篇
  2006年   100283篇
  2005年   95567篇
  2004年   97019篇
  2003年   87468篇
  2002年   76948篇
  2001年   118143篇
  2000年   111590篇
  1999年   107527篇
  1998年   66650篇
  1997年   64252篇
  1996年   62096篇
  1995年   57531篇
  1994年   51484篇
  1993年   48041篇
  1992年   74204篇
  1991年   69880篇
  1990年   65610篇
  1989年   64405篇
  1988年   59368篇
  1987年   58078篇
  1986年   54617篇
  1985年   54413篇
  1984年   49485篇
  1983年   45058篇
  1982年   42165篇
  1981年   39543篇
  1980年   37232篇
  1979年   40222篇
  1978年   35565篇
  1977年   32274篇
  1976年   29612篇
  1975年   27939篇
  1974年   29005篇
  1973年   28027篇
  1972年   26228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