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   3706247篇
  免费   315219篇
  国内免费   22584篇
耳鼻咽喉   50399篇
儿科学   115806篇
妇产科学   95203篇
基础医学   576183篇
口腔科学   96601篇
临床医学   344387篇
内科学   662405篇
皮肤病学   98465篇
神经病学   316430篇
特种医学   143837篇
外国民族医学   560篇
外科学   569383篇
综合类   125472篇
现状与发展   115篇
一般理论   2361篇
预防医学   306841篇
眼科学   86311篇
药学   254580篇
  137篇
中国医学   16236篇
肿瘤学   182338篇
  2022年   27790篇
  2021年   61435篇
  2020年   41204篇
  2019年   62302篇
  2018年   78174篇
  2017年   60954篇
  2016年   66773篇
  2015年   82115篇
  2014年   120042篇
  2013年   184461篇
  2012年   110570篇
  2011年   112183篇
  2010年   127628篇
  2009年   131869篇
  2008年   95713篇
  2007年   98717篇
  2006年   109855篇
  2005年   104465篇
  2004年   103416篇
  2003年   93219篇
  2002年   81993篇
  2001年   121397篇
  2000年   114759篇
  1999年   110898篇
  1998年   69691篇
  1997年   66978篇
  1996年   64117篇
  1995年   59367篇
  1994年   52917篇
  1993年   49031篇
  1992年   75382篇
  1991年   71104篇
  1990年   66609篇
  1989年   65319篇
  1988年   60153篇
  1987年   58804篇
  1986年   55241篇
  1985年   54919篇
  1984年   49773篇
  1983年   45280篇
  1982年   42336篇
  1981年   39685篇
  1980年   37352篇
  1979年   40329篇
  1978年   35644篇
  1977年   32349篇
  1976年   29691篇
  1975年   27991篇
  1974年   29074篇
  1973年   28066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