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   3036309篇
  免费   252642篇
  国内免费   13395篇
耳鼻咽喉   41440篇
儿科学   95551篇
妇产科学   76056篇
基础医学   495754篇
口腔科学   81289篇
临床医学   273360篇
内科学   523421篇
皮肤病学   85035篇
神经病学   258506篇
特种医学   118459篇
外国民族医学   100篇
外科学   473676篇
综合类   94157篇
现状与发展   23篇
一般理论   2113篇
预防医学   256263篇
眼科学   69433篇
药学   205747篇
  23篇
中国医学   9731篇
肿瘤学   142209篇
  2022年   23008篇
  2021年   54773篇
  2020年   34995篇
  2019年   57880篇
  2018年   70344篇
  2017年   53571篇
  2016年   58920篇
  2015年   73491篇
  2014年   107540篇
  2013年   172484篇
  2012年   80398篇
  2011年   78695篇
  2010年   113718篇
  2009年   118734篇
  2008年   65961篇
  2007年   67561篇
  2006年   78867篇
  2005年   74085篇
  2004年   76423篇
  2003年   67440篇
  2002年   57548篇
  2001年   85189篇
  2000年   77131篇
  1999年   80598篇
  1998年   63082篇
  1997年   61310篇
  1996年   59023篇
  1995年   54547篇
  1994年   48728篇
  1993年   45500篇
  1992年   54378篇
  1991年   52197篇
  1990年   49271篇
  1989年   49448篇
  1988年   45702篇
  1987年   44463篇
  1986年   42272篇
  1985年   42809篇
  1984年   41083篇
  1983年   38188篇
  1982年   38929篇
  1981年   36983篇
  1980年   34965篇
  1979年   32866篇
  1978年   30797篇
  1977年   28628篇
  1976年   26286篇
  1975年   24900篇
  1974年   24654篇
  1973年   23524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