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   3605728篇
  免费   289373篇
  国内免费   16276篇
耳鼻咽喉   48774篇
儿科学   114733篇
妇产科学   93327篇
基础医学   569485篇
口腔科学   99561篇
临床医学   329976篇
内科学   638824篇
皮肤病学   93249篇
神经病学   309165篇
特种医学   137622篇
外国民族医学   412篇
外科学   540799篇
综合类   107279篇
现状与发展   23篇
一般理论   2325篇
预防医学   315343篇
眼科学   81186篇
药学   246482篇
  27篇
中国医学   10952篇
肿瘤学   171833篇
  2021年   57217篇
  2020年   36477篇
  2019年   59848篇
  2018年   74089篇
  2017年   56338篇
  2016年   61990篇
  2015年   76225篇
  2014年   111210篇
  2013年   177131篇
  2012年   106447篇
  2011年   108569篇
  2010年   122002篇
  2009年   124717篇
  2008年   92557篇
  2007年   96535篇
  2006年   106031篇
  2005年   100626篇
  2004年   101038篇
  2003年   91128篇
  2002年   80169篇
  2001年   110485篇
  2000年   103789篇
  1999年   102067篇
  1998年   66289篇
  1997年   63940篇
  1996年   61616篇
  1995年   57150篇
  1994年   51358篇
  1993年   47947篇
  1992年   72369篇
  1991年   69453篇
  1990年   65885篇
  1989年   64264篇
  1988年   59684篇
  1987年   58233篇
  1986年   55508篇
  1985年   55333篇
  1984年   49957篇
  1983年   45436篇
  1982年   42230篇
  1981年   39813篇
  1980年   37423篇
  1979年   41372篇
  1978年   36225篇
  1977年   32729篇
  1976年   30526篇
  1975年   28884篇
  1974年   30362篇
  1973年   29260篇
  1972年   27355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.
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