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   3142236篇
  免费   256842篇
  国内免费   13661篇
耳鼻咽喉   42901篇
儿科学   98533篇
妇产科学   78189篇
基础医学   508820篇
口腔科学   83489篇
临床医学   283169篇
内科学   545134篇
皮肤病学   86574篇
神经病学   268571篇
特种医学   121811篇
外国民族医学   112篇
外科学   488442篇
综合类   95648篇
现状与发展   24篇
一般理论   2236篇
预防医学   264382篇
眼科学   72330篇
药学   212978篇
  23篇
中国医学   9881篇
肿瘤学   149492篇
  2022年   23433篇
  2021年   55503篇
  2020年   35431篇
  2019年   58398篇
  2018年   71338篇
  2017年   54359篇
  2016年   59909篇
  2015年   74329篇
  2014年   108608篇
  2013年   174039篇
  2012年   89281篇
  2011年   88870篇
  2010年   116704篇
  2009年   120806篇
  2008年   75718篇
  2007年   78508篇
  2006年   89098篇
  2005年   84589篇
  2004年   86497篇
  2003年   77217篇
  2002年   67010篇
  2001年   85617篇
  2000年   77484篇
  1999年   80964篇
  1998年   63558篇
  1997年   61647篇
  1996年   59259篇
  1995年   54746篇
  1994年   48948篇
  1993年   45672篇
  1992年   54590篇
  1991年   52395篇
  1990年   49442篇
  1989年   49624篇
  1988年   45865篇
  1987年   44613篇
  1986年   42425篇
  1985年   43014篇
  1984年   41265篇
  1983年   38350篇
  1982年   39103篇
  1981年   37144篇
  1980年   35107篇
  1979年   32993篇
  1978年   30907篇
  1977年   28718篇
  1976年   26381篇
  1975年   24982篇
  1974年   24757篇
  1973年   23611篇
排序方式: 共有10000条查询结果,搜索用时 15 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