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   2726110篇
  免费   231832篇
  国内免费   12803篇
耳鼻咽喉   37475篇
儿科学   86154篇
妇产科学   68881篇
基础医学   453088篇
口腔科学   72079篇
临床医学   242552篇
内科学   463338篇
皮肤病学   78886篇
神经病学   237585篇
特种医学   107205篇
外国民族医学   68篇
外科学   430868篇
综合类   87040篇
现状与发展   23篇
一般理论   2125篇
预防医学   231889篇
眼科学   61205篇
药学   181835篇
  22篇
中国医学   8345篇
肿瘤学   120082篇
  2022年   22818篇
  2021年   54547篇
  2020年   34845篇
  2019年   57744篇
  2018年   69735篇
  2017年   52990篇
  2016年   58336篇
  2015年   72997篇
  2014年   107094篇
  2013年   172176篇
  2012年   72496篇
  2011年   69562篇
  2010年   111504篇
  2009年   117402篇
  2008年   56889篇
  2007年   57332篇
  2006年   68911篇
  2005年   64623篇
  2004年   66999篇
  2003年   58331篇
  2002年   48289篇
  2001年   64049篇
  2000年   55426篇
  1999年   63456篇
  1998年   60789篇
  1997年   59768篇
  1996年   57411篇
  1995年   52937篇
  1994年   47167篇
  1993年   44187篇
  1992年   41474篇
  1991年   39339篇
  1990年   36666篇
  1989年   36963篇
  1988年   34393篇
  1987年   33472篇
  1986年   31910篇
  1985年   33091篇
  1984年   34379篇
  1983年   32759篇
  1982年   36807篇
  1981年   35128篇
  1980年   33188篇
  1979年   26639篇
  1978年   26776篇
  1977年   25379篇
  1976年   23056篇
  1975年   21003篇
  1974年   20013篇
  1973年   19296篇
排序方式: 共有10000条查询结果,搜索用时 8 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.
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