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   4408302篇
  免费   340786篇
  国内免费   14958篇
耳鼻咽喉   60842篇
儿科学   140592篇
妇产科学   115019篇
基础医学   673027篇
口腔科学   119286篇
临床医学   401864篇
内科学   800602篇
皮肤病学   108570篇
神经病学   373085篇
特种医学   171252篇
外国民族医学   754篇
外科学   664185篇
综合类   121737篇
现状与发展   24篇
一般理论   2764篇
预防医学   363873篇
眼科学   101840篇
药学   310847篇
  26篇
中国医学   12025篇
肿瘤学   221832篇
  2021年   57146篇
  2020年   36365篇
  2019年   59578篇
  2018年   75517篇
  2017年   57766篇
  2016年   64000篇
  2015年   76867篇
  2014年   111310篇
  2013年   177101篇
  2012年   128907篇
  2011年   134117篇
  2010年   127630篇
  2009年   128867篇
  2008年   119543篇
  2007年   126892篇
  2006年   135433篇
  2005年   129484篇
  2004年   130422篇
  2003年   120400篇
  2002年   109275篇
  2001年   167163篇
  2000年   162169篇
  1999年   148870篇
  1998年   71870篇
  1997年   67765篇
  1996年   65747篇
  1995年   61182篇
  1994年   55072篇
  1993年   51104篇
  1992年   106719篇
  1991年   101498篇
  1990年   97326篇
  1989年   94902篇
  1988年   87223篇
  1987年   85403篇
  1986年   80275篇
  1985年   78448篇
  1984年   65482篇
  1983年   58271篇
  1982年   47246篇
  1981年   43908篇
  1980年   41109篇
  1979年   55152篇
  1978年   44788篇
  1977年   40022篇
  1976年   36870篇
  1975年   36843篇
  1974年   39646篇
  1973年   37784篇
  1972年   35393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