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   3861504篇
  免费   306210篇
  国内免费   14486篇
耳鼻咽喉   53322篇
儿科学   119011篇
妇产科学   99156篇
基础医学   601397篇
口腔科学   107373篇
临床医学   347174篇
内科学   687242篇
皮肤病学   98980篇
神经病学   324685篇
特种医学   151570篇
外国民族医学   394篇
外科学   600096篇
综合类   113075篇
现状与发展   23篇
一般理论   2408篇
预防医学   316166篇
眼科学   89564篇
药学   269991篇
  25篇
中国医学   10799篇
肿瘤学   189749篇
  2021年   55284篇
  2020年   35267篇
  2019年   58278篇
  2018年   72165篇
  2017年   55191篇
  2016年   60895篇
  2015年   74722篇
  2014年   108998篇
  2013年   174366篇
  2012年   101357篇
  2011年   103073篇
  2010年   119574篇
  2009年   122992篇
  2008年   90738篇
  2007年   94858篇
  2006年   105223篇
  2005年   100222篇
  2004年   102161篇
  2003年   92891篇
  2002年   82655篇
  2001年   136934篇
  2000年   131298篇
  1999年   124239篇
  1998年   68498篇
  1997年   65269篇
  1996年   63133篇
  1995年   58567篇
  1994年   52655篇
  1993年   48919篇
  1992年   89858篇
  1991年   85904篇
  1990年   82172篇
  1989年   80901篇
  1988年   74329篇
  1987年   73162篇
  1986年   68786篇
  1985年   68367篇
  1984年   58610篇
  1983年   52633篇
  1982年   44962篇
  1981年   42101篇
  1980年   39443篇
  1979年   49357篇
  1978年   41292篇
  1977年   37385篇
  1976年   34009篇
  1975年   33411篇
  1974年   35813篇
  1973年   34249篇
  1972年   32066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