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   5059065篇
  免费   388265篇
  国内免费   15888篇
耳鼻咽喉   70405篇
儿科学   161354篇
妇产科学   132321篇
基础医学   755654篇
口腔科学   139656篇
临床医学   466495篇
内科学   924329篇
皮肤病学   118738篇
神经病学   424733篇
特种医学   196932篇
外国民族医学   975篇
外科学   756447篇
综合类   141055篇
现状与发展   24篇
一般理论   3028篇
预防医学   424271篇
眼科学   119200篇
药学   360463篇
  29篇
中国医学   13206篇
肿瘤学   253903篇
  2021年   58286篇
  2019年   60570篇
  2018年   77919篇
  2017年   59716篇
  2016年   66239篇
  2015年   78654篇
  2014年   113717篇
  2013年   180123篇
  2012年   150154篇
  2011年   159365篇
  2010年   134800篇
  2009年   133706篇
  2008年   143563篇
  2007年   154413篇
  2006年   161741篇
  2005年   155797篇
  2004年   156009篇
  2003年   145350篇
  2002年   133429篇
  2001年   197844篇
  2000年   194685篇
  1999年   174839篇
  1998年   76506篇
  1997年   71064篇
  1996年   69170篇
  1995年   64678篇
  1994年   58514篇
  1993年   54280篇
  1992年   128846篇
  1991年   123598篇
  1990年   119033篇
  1989年   115579篇
  1988年   106467篇
  1987年   104551篇
  1986年   98632篇
  1985年   96043篇
  1984年   78032篇
  1983年   68672篇
  1982年   51857篇
  1981年   47939篇
  1980年   44936篇
  1979年   67828篇
  1978年   53189篇
  1977年   46716篇
  1976年   43357篇
  1975年   44155篇
  1974年   49093篇
  1973年   47030篇
  1972年   44031篇
  1971年   40719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.
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