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   3805436篇
  免费   313684篇
  国内免费   14015篇
耳鼻咽喉   52245篇
儿科学   121048篇
妇产科学   99180篇
基础医学   592452篇
口腔科学   104736篇
临床医学   340600篇
内科学   680674篇
皮肤病学   96622篇
神经病学   326000篇
特种医学   151549篇
外国民族医学   510篇
外科学   585479篇
综合类   115066篇
现状与发展   24篇
一般理论   2494篇
预防医学   316940篇
眼科学   88643篇
药学   266155篇
  22篇
中国医学   10267篇
肿瘤学   182429篇
  2021年   55772篇
  2020年   35513篇
  2019年   58512篇
  2018年   72372篇
  2017年   55211篇
  2016年   61176篇
  2015年   75075篇
  2014年   109565篇
  2013年   175105篇
  2012年   105083篇
  2011年   106699篇
  2010年   120466篇
  2009年   123991篇
  2008年   94147篇
  2007年   98491篇
  2006年   108707篇
  2005年   104118篇
  2004年   106374篇
  2003年   96600篇
  2002年   86202篇
  2001年   121232篇
  2000年   115463篇
  1999年   112052篇
  1998年   67484篇
  1997年   64914篇
  1996年   62823篇
  1995年   58400篇
  1994年   52574篇
  1993年   49061篇
  1992年   83137篇
  1991年   79574篇
  1990年   76096篇
  1989年   74780篇
  1988年   69592篇
  1987年   68273篇
  1986年   65059篇
  1985年   64979篇
  1984年   56749篇
  1983年   51433篇
  1982年   44925篇
  1981年   42070篇
  1980年   39648篇
  1979年   49067篇
  1978年   41061篇
  1977年   36858篇
  1976年   34162篇
  1975年   32912篇
  1974年   35632篇
  1973年   34274篇
  1972年   31748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.
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