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   4074159篇
  免费   322226篇
  国内免费   14998篇
耳鼻咽喉   57592篇
儿科学   131636篇
妇产科学   107100篇
基础医学   625710篇
口腔科学   112197篇
临床医学   360751篇
内科学   742003篇
皮肤病学   102207篇
神经病学   341980篇
特种医学   160255篇
外国民族医学   1009篇
外科学   625826篇
综合类   116635篇
现状与发展   23篇
一般理论   2483篇
预防医学   341459篇
眼科学   93384篇
药学   282382篇
  23篇
中国医学   11353篇
肿瘤学   195375篇
  2021年   57578篇
  2020年   36729篇
  2019年   60253篇
  2018年   74901篇
  2017年   57022篇
  2016年   62982篇
  2015年   76883篇
  2014年   111814篇
  2013年   177678篇
  2012年   114560篇
  2011年   118363篇
  2010年   124632篇
  2009年   126967篇
  2008年   104266篇
  2007年   110607篇
  2006年   119077篇
  2005年   114238篇
  2004年   115075篇
  2003年   105765篇
  2002年   95272篇
  2001年   139032篇
  2000年   134029篇
  1999年   127281篇
  1998年   69674篇
  1997年   66089篇
  1996年   63999篇
  1995年   59282篇
  1994年   53528篇
  1993年   49906篇
  1992年   91649篇
  1991年   88352篇
  1990年   84737篇
  1989年   82314篇
  1988年   76325篇
  1987年   74914篇
  1986年   70888篇
  1985年   69976篇
  1984年   60048篇
  1983年   53827篇
  1982年   45522篇
  1981年   42666篇
  1980年   40045篇
  1979年   51165篇
  1978年   42243篇
  1977年   37964篇
  1976年   35185篇
  1975年   35011篇
  1974年   37604篇
  1973年   36184篇
  1972年   33835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