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   3561357篇
  免费   304282篇
  国内免费   21928篇
耳鼻咽喉   48239篇
儿科学   110207篇
妇产科学   89677篇
基础医学   561948篇
口腔科学   94707篇
临床医学   327325篇
内科学   628515篇
皮肤病学   90373篇
神经病学   302929篇
特种医学   141694篇
外国民族医学   383篇
外科学   544917篇
综合类   124745篇
现状与发展   56篇
一般理论   2267篇
预防医学   299994篇
眼科学   81987篇
药学   249533篇
  148篇
中国医学   15679篇
肿瘤学   172244篇
  2022年   27722篇
  2021年   60617篇
  2020年   39194篇
  2019年   61700篇
  2018年   74881篇
  2017年   57586篇
  2016年   62991篇
  2015年   78796篇
  2014年   114263篇
  2013年   178578篇
  2012年   100585篇
  2011年   101311篇
  2010年   121840篇
  2009年   125029篇
  2008年   85125篇
  2007年   88273篇
  2006年   98826篇
  2005年   94355篇
  2004年   94307篇
  2003年   84967篇
  2002年   73582篇
  2001年   113414篇
  2000年   107200篇
  1999年   104850篇
  1998年   67776篇
  1997年   65377篇
  1996年   63197篇
  1995年   58819篇
  1994年   52713篇
  1993年   49012篇
  1992年   74460篇
  1991年   71058篇
  1990年   67268篇
  1989年   65738篇
  1988年   60914篇
  1987年   59546篇
  1986年   56236篇
  1985年   56303篇
  1984年   50593篇
  1983年   45887篇
  1982年   42618篇
  1981年   40050篇
  1980年   37716篇
  1979年   41838篇
  1978年   36595篇
  1977年   33133篇
  1976年   30483篇
  1975年   29056篇
  1974年   30302篇
  1973年   29047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