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   1481623篇
  免费   101313篇
  国内免费   2101篇
耳鼻咽喉   19860篇
儿科学   51703篇
妇产科学   38525篇
基础医学   202394篇
口腔科学   35941篇
临床医学   126341篇
内科学   295363篇
皮肤病学   29254篇
神经病学   120023篇
特种医学   61148篇
外国民族医学   669篇
外科学   228877篇
综合类   29880篇
现状与发展   1篇
一般理论   440篇
预防医学   115849篇
眼科学   31336篇
药学   106084篇
  2篇
中国医学   3064篇
肿瘤学   88283篇
  2018年   34503篇
  2017年   26741篇
  2016年   29848篇
  2015年   13835篇
  2014年   18809篇
  2013年   28365篇
  2012年   44731篇
  2011年   60183篇
  2010年   41721篇
  2009年   33883篇
  2008年   57156篇
  2007年   61951篇
  2006年   42269篇
  2005年   42957篇
  2004年   43074篇
  2003年   42670篇
  2002年   40195篇
  2001年   64830篇
  2000年   67374篇
  1999年   57128篇
  1998年   15780篇
  1997年   14378篇
  1996年   14655篇
  1995年   13909篇
  1994年   13197篇
  1993年   12143篇
  1992年   44998篇
  1991年   43971篇
  1990年   42738篇
  1989年   40557篇
  1988年   37256篇
  1987年   36645篇
  1986年   33986篇
  1985年   32659篇
  1984年   24532篇
  1983年   20624篇
  1982年   12090篇
  1981年   11013篇
  1980年   9823篇
  1979年   21638篇
  1978年   15073篇
  1977年   12734篇
  1976年   11903篇
  1975年   12825篇
  1974年   14912篇
  1973年   14309篇
  1972年   13131篇
  1971年   11877篇
  1970年   11202篇
  1969年   10152篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
5.
6.
7.
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   
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