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   3563404篇
  免费   295609篇
  国内免费   14252篇
耳鼻咽喉   48212篇
儿科学   113240篇
妇产科学   92846篇
基础医学   565200篇
口腔科学   94228篇
临床医学   320208篇
内科学   636772篇
皮肤病学   93599篇
神经病学   306943篇
特种医学   138931篇
外国民族医学   490篇
外科学   545832篇
综合类   108036篇
现状与发展   24篇
一般理论   2381篇
预防医学   299274篇
眼科学   81221篇
药学   243619篇
  22篇
中国医学   10514篇
肿瘤学   171673篇
  2021年   55580篇
  2020年   35387篇
  2019年   58460篇
  2018年   72188篇
  2017年   55118篇
  2016年   60914篇
  2015年   74783篇
  2014年   109114篇
  2013年   174364篇
  2012年   101976篇
  2011年   102556篇
  2010年   118870篇
  2009年   123026篇
  2008年   89078篇
  2007年   92952篇
  2006年   103252篇
  2005年   98497篇
  2004年   99585篇
  2003年   89926篇
  2002年   79180篇
  2001年   118247篇
  2000年   111670篇
  1999年   107619篇
  1998年   66788篇
  1997年   64343篇
  1996年   62177篇
  1995年   57619篇
  1994年   51537篇
  1993年   48099篇
  1992年   74259篇
  1991年   69921篇
  1990年   65653篇
  1989年   64448篇
  1988年   59399篇
  1987年   58117篇
  1986年   54649篇
  1985年   54448篇
  1984年   49514篇
  1983年   45084篇
  1982年   42187篇
  1981年   39569篇
  1980年   37247篇
  1979年   40232篇
  1978年   35575篇
  1977年   32292篇
  1976年   29626篇
  1975年   27949篇
  1974年   29028篇
  1973年   28040篇
  1972年   26234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