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   3620320篇
  免费   291923篇
  国内免费   16273篇
耳鼻咽喉   48613篇
儿科学   114725篇
妇产科学   93794篇
基础医学   570230篇
口腔科学   97305篇
临床医学   334857篇
内科学   639107篇
皮肤病学   92578篇
神经病学   311572篇
特种医学   139012篇
外国民族医学   405篇
外科学   546230篇
综合类   108266篇
现状与发展   36篇
一般理论   2499篇
预防医学   314698篇
眼科学   82044篇
药学   248502篇
  28篇
中国医学   10729篇
肿瘤学   173286篇
  2021年   56286篇
  2020年   36050篇
  2019年   59054篇
  2018年   73615篇
  2017年   56276篇
  2016年   61949篇
  2015年   75896篇
  2014年   110565篇
  2013年   176713篇
  2012年   108286篇
  2011年   111090篇
  2010年   122462篇
  2009年   125240篇
  2008年   96325篇
  2007年   100869篇
  2006年   110450篇
  2005年   105878篇
  2004年   106644篇
  2003年   96513篇
  2002年   85740篇
  2001年   108114篇
  2000年   101318篇
  1999年   100134篇
  1998年   66485篇
  1997年   64100篇
  1996年   61773篇
  1995年   57282篇
  1994年   51417篇
  1993年   47909篇
  1992年   71065篇
  1991年   68151篇
  1990年   64728篇
  1989年   63060篇
  1988年   58648篇
  1987年   57265篇
  1986年   54631篇
  1985年   54526篇
  1984年   49495篇
  1983年   45141篇
  1982年   42255篇
  1981年   39804篇
  1980年   37454篇
  1979年   40914篇
  1978年   36086篇
  1977年   32628篇
  1976年   30438篇
  1975年   28693篇
  1974年   30146篇
  1973年   29035篇
  1972年   27151篇
排序方式: 共有10000条查询结果,搜索用时 0 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.
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   
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