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   4979593篇
  免费   375811篇
  国内免费   17589篇
耳鼻咽喉   69092篇
儿科学   159921篇
妇产科学   132624篇
基础医学   746126篇
口腔科学   137768篇
临床医学   462745篇
内科学   904051篇
皮肤病学   118043篇
神经病学   416600篇
特种医学   191771篇
外国民族医学   1065篇
外科学   738392篇
综合类   139845篇
现状与发展   24篇
一般理论   2841篇
预防医学   418880篇
眼科学   116718篇
药学   353644篇
  30篇
中国医学   13827篇
肿瘤学   248986篇
  2021年   57198篇
  2019年   59578篇
  2018年   76733篇
  2017年   58902篇
  2016年   65193篇
  2015年   77625篇
  2014年   112072篇
  2013年   178279篇
  2012年   145274篇
  2011年   153797篇
  2010年   132921篇
  2009年   132128篇
  2008年   138530篇
  2007年   148288篇
  2006年   155718篇
  2005年   149418篇
  2004年   149724篇
  2003年   139345篇
  2002年   128232篇
  2001年   194472篇
  2000年   191243篇
  1999年   172316篇
  1998年   75477篇
  1997年   70355篇
  1996年   68272篇
  1995年   63768篇
  1994年   57754篇
  1993年   53495篇
  1992年   126762篇
  1991年   121702篇
  1990年   117344篇
  1989年   113837篇
  1988年   104922篇
  1987年   102891篇
  1986年   97394篇
  1985年   94671篇
  1984年   76880篇
  1983年   67941篇
  1982年   51282篇
  1981年   47446篇
  1980年   44448篇
  1979年   66997篇
  1978年   52584篇
  1977年   46109篇
  1976年   43138篇
  1975年   43656篇
  1974年   48730篇
  1973年   46687篇
  1972年   43796篇
  1971年   40699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