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   3489613篇
  免费   281815篇
  国内免费   14593篇
耳鼻咽喉   48470篇
儿科学   106946篇
妇产科学   91292篇
基础医学   547028篇
口腔科学   96880篇
临床医学   308410篇
内科学   618354篇
皮肤病学   93078篇
神经病学   297953篇
特种医学   138884篇
外国民族医学   453篇
外科学   543511篇
综合类   107091篇
现状与发展   24篇
一般理论   2262篇
预防医学   284331篇
眼科学   79627篇
药学   242991篇
  23篇
中国医学   10347篇
肿瘤学   168066篇
  2021年   54919篇
  2020年   35044篇
  2019年   58040篇
  2018年   70845篇
  2017年   54095篇
  2016年   59846篇
  2015年   73988篇
  2014年   108180篇
  2013年   173371篇
  2012年   90122篇
  2011年   89192篇
  2010年   115519篇
  2009年   120729篇
  2008年   77112篇
  2007年   80645篇
  2006年   91489篇
  2005年   86811篇
  2004年   89048篇
  2003年   80408篇
  2002年   70728篇
  2001年   109290篇
  2000年   102411篇
  1999年   101349篇
  1998年   65237篇
  1997年   63133篇
  1996年   60649篇
  1995年   56094篇
  1994年   50327篇
  1993年   47020篇
  1992年   71721篇
  1991年   68017篇
  1990年   65001篇
  1989年   64341篇
  1988年   60222篇
  1987年   58850篇
  1986年   56334篇
  1985年   55975篇
  1984年   50494篇
  1983年   45777篇
  1982年   42321篇
  1981年   39785篇
  1980年   37628篇
  1979年   42939篇
  1978年   37354篇
  1977年   34268篇
  1976年   31035篇
  1975年   30688篇
  1974年   32404篇
  1973年   31075篇
  1972年   29505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.
9.
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   

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