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   3234562篇
  免费   264635篇
  国内免费   13931篇
耳鼻咽喉   44580篇
儿科学   101717篇
妇产科学   82801篇
基础医学   516292篇
口腔科学   85828篇
临床医学   285488篇
内科学   570633篇
皮肤病学   86731篇
神经病学   278350篇
特种医学   128185篇
外国民族医学   361篇
外科学   507780篇
综合类   97855篇
现状与发展   23篇
一般理论   2293篇
预防医学   270765篇
眼科学   72932篇
药学   219962篇
  23篇
中国医学   9338篇
肿瘤学   151191篇
  2021年   55139篇
  2020年   35156篇
  2019年   58206篇
  2018年   71011篇
  2017年   54163篇
  2016年   59744篇
  2015年   73965篇
  2014年   108125篇
  2013年   173497篇
  2012年   90417篇
  2011年   90445篇
  2010年   116161篇
  2009年   120781篇
  2008年   77500篇
  2007年   80362篇
  2006年   90865篇
  2005年   87012篇
  2004年   88707篇
  2003年   79706篇
  2002年   69613篇
  2001年   89646篇
  2000年   82204篇
  1999年   85321篇
  1998年   63719篇
  1997年   61978篇
  1996年   59681篇
  1995年   55066篇
  1994年   49263篇
  1993年   46031篇
  1992年   58786篇
  1991年   55473篇
  1990年   52645篇
  1989年   52004篇
  1988年   48528篇
  1987年   47475篇
  1986年   45499篇
  1985年   45720篇
  1984年   43270篇
  1983年   40070篇
  1982年   39967篇
  1981年   37711篇
  1980年   35651篇
  1979年   35270篇
  1978年   32273篇
  1977年   29796篇
  1976年   27377篇
  1975年   25905篇
  1974年   26421篇
  1973年   25255篇
  1972年   23768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.
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   

8.
9.
Graefe's Archive for Clinical and Experimental Ophthalmology - The published online version contains mistake as the author's first name and last name have been interchanged as "Hild...  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