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   3688073篇
  免费   295705篇
  国内免费   14425篇
耳鼻咽喉   50583篇
儿科学   117923篇
妇产科学   94673篇
基础医学   581619篇
口腔科学   100502篇
临床医学   334139篇
内科学   650768篇
皮肤病学   96988篇
神经病学   309159篇
特种医学   144156篇
外国民族医学   400篇
外科学   566624篇
综合类   111275篇
现状与发展   23篇
一般理论   2360篇
预防医学   309142篇
眼科学   85603篇
药学   253725篇
  24篇
中国医学   11073篇
肿瘤学   177444篇
  2021年   55463篇
  2020年   35445篇
  2019年   58413篇
  2018年   72271篇
  2017年   55238篇
  2016年   60907篇
  2015年   74734篇
  2014年   108993篇
  2013年   174319篇
  2012年   99093篇
  2011年   100929篇
  2010年   119490篇
  2009年   122651篇
  2008年   87598篇
  2007年   91805篇
  2006年   101848篇
  2005年   96699篇
  2004年   98820篇
  2003年   89449篇
  2002年   79168篇
  2001年   121759篇
  2000年   115275篇
  1999年   111061篇
  1998年   67268篇
  1997年   64311篇
  1996年   62124篇
  1995年   57578篇
  1994年   51848篇
  1993年   48153篇
  1992年   79130篇
  1991年   76302篇
  1990年   73139篇
  1989年   72366篇
  1988年   66540篇
  1987年   65432篇
  1986年   61788篇
  1985年   61650篇
  1984年   54118篇
  1983年   48798篇
  1982年   43508篇
  1981年   40932篇
  1980年   38529篇
  1979年   45600篇
  1978年   39222篇
  1977年   35323篇
  1976年   32759篇
  1975年   32114篇
  1974年   33974篇
  1973年   32574篇
  1972年   30350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.
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