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   1398027篇
  免费   102448篇
  国内免费   4178篇
耳鼻咽喉   19007篇
儿科学   47057篇
妇产科学   39975篇
基础医学   194462篇
口腔科学   36852篇
临床医学   119419篇
内科学   287228篇
皮肤病学   34406篇
神经病学   111475篇
特种医学   56574篇
外国民族医学   663篇
外科学   216651篇
综合类   28361篇
现状与发展   1篇
一般理论   414篇
预防医学   104360篇
眼科学   29222篇
药学   101672篇
  2篇
中国医学   2526篇
肿瘤学   74326篇
  2021年   11894篇
  2019年   12254篇
  2018年   14452篇
  2017年   11809篇
  2016年   13106篇
  2015年   14825篇
  2014年   19992篇
  2013年   30231篇
  2012年   37212篇
  2011年   39560篇
  2010年   25331篇
  2009年   25188篇
  2008年   38056篇
  2007年   40435篇
  2006年   41515篇
  2005年   40251篇
  2004年   39351篇
  2003年   38623篇
  2002年   37734篇
  2001年   66562篇
  2000年   68640篇
  1999年   58856篇
  1998年   17845篇
  1997年   16357篇
  1996年   16801篇
  1995年   16530篇
  1994年   15707篇
  1993年   14419篇
  1992年   47394篇
  1991年   46247篇
  1990年   44602篇
  1989年   42714篇
  1988年   39134篇
  1987年   38550篇
  1986年   35867篇
  1985年   34634篇
  1984年   26320篇
  1983年   22342篇
  1982年   13559篇
  1981年   12557篇
  1979年   22877篇
  1978年   16377篇
  1977年   14091篇
  1976年   12891篇
  1975年   13885篇
  1974年   15669篇
  1973年   14997篇
  1972年   13696篇
  1971年   12413篇
  1970年   11681篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
5.
6.
7.
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   
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.
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