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   4866073篇
  免费   381869篇
  国内免费   15836篇
耳鼻咽喉   69401篇
儿科学   153152篇
妇产科学   129528篇
基础医学   730459篇
口腔科学   137443篇
临床医学   448029篇
内科学   883897篇
皮肤病学   114249篇
神经病学   409814篇
特种医学   191778篇
外国民族医学   1132篇
外科学   729643篇
综合类   140109篇
现状与发展   24篇
一般理论   2862篇
预防医学   415106篇
眼科学   115568篇
药学   344541篇
  28篇
中国医学   12400篇
肿瘤学   234615篇
  2021年   56254篇
  2019年   58959篇
  2018年   74981篇
  2017年   57404篇
  2016年   63736篇
  2015年   76531篇
  2014年   111343篇
  2013年   176777篇
  2012年   135499篇
  2011年   142400篇
  2010年   128517篇
  2009年   129538篇
  2008年   129043篇
  2007年   138453篇
  2006年   145921篇
  2005年   141229篇
  2004年   141482篇
  2003年   131633篇
  2002年   121990篇
  2001年   181069篇
  2000年   178127篇
  1999年   161856篇
  1998年   74422篇
  1997年   69887篇
  1996年   68011篇
  1995年   63671篇
  1994年   57874篇
  1993年   53636篇
  1992年   121898篇
  1991年   117532篇
  1990年   112475篇
  1989年   109351篇
  1988年   101802篇
  1987年   99945篇
  1986年   95094篇
  1985年   92562篇
  1984年   76373篇
  1983年   67820篇
  1982年   51726篇
  1981年   48024篇
  1980年   45149篇
  1979年   68884篇
  1978年   54452篇
  1977年   47558篇
  1976年   44356篇
  1975年   44673篇
  1974年   51184篇
  1973年   49361篇
  1972年   46561篇
  1971年   42973篇
排序方式: 共有10000条查询结果,搜索用时 9 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