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   3508817篇
  免费   285310篇
  国内免费   14055篇
耳鼻咽喉   48856篇
儿科学   112341篇
妇产科学   91496篇
基础医学   553777篇
口腔科学   94032篇
临床医学   312076篇
内科学   622413篇
皮肤病学   91901篇
神经病学   297626篇
特种医学   138490篇
外国民族医学   391篇
外科学   547363篇
综合类   103364篇
现状与发展   23篇
一般理论   2274篇
预防医学   292800篇
眼科学   80414篇
药学   243312篇
  23篇
中国医学   9850篇
肿瘤学   165360篇
  2021年   55618篇
  2020年   35477篇
  2019年   58678篇
  2018年   72271篇
  2017年   55026篇
  2016年   60666篇
  2015年   74842篇
  2014年   109344篇
  2013年   174877篇
  2012年   95400篇
  2011年   96112篇
  2010年   118163篇
  2009年   122345篇
  2008年   83223篇
  2007年   87143篇
  2006年   97428篇
  2005年   93289篇
  2004年   94646篇
  2003年   85736篇
  2002年   75742篇
  2001年   104885篇
  2000年   97557篇
  1999年   97751篇
  1998年   65575篇
  1997年   63181篇
  1996年   61122篇
  1995年   56529篇
  1994年   50830篇
  1993年   47295篇
  1992年   69817篇
  1991年   66996篇
  1990年   64371篇
  1989年   63540篇
  1988年   59497篇
  1987年   57937篇
  1986年   55252篇
  1985年   55232篇
  1984年   49795篇
  1983年   45839篇
  1982年   42275篇
  1981年   39776篇
  1980年   37430篇
  1979年   41912篇
  1978年   36542篇
  1977年   33501篇
  1976年   30835篇
  1975年   30077篇
  1974年   31310篇
  1973年   30117篇
  1972年   28392篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
5.
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   
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