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   4852426篇
  免费   371093篇
  国内免费   16955篇
耳鼻咽喉   67722篇
儿科学   156136篇
妇产科学   129595篇
基础医学   731841篇
口腔科学   133876篇
临床医学   448737篇
内科学   877156篇
皮肤病学   116503篇
神经病学   400203篇
特种医学   186438篇
外国民族医学   824篇
外科学   729709篇
综合类   138359篇
现状与发展   23篇
一般理论   2792篇
预防医学   412532篇
眼科学   114510篇
药学   341737篇
  30篇
中国医学   13289篇
肿瘤学   238462篇
  2021年   56768篇
  2019年   59201篇
  2018年   76017篇
  2017年   58225篇
  2016年   64462篇
  2015年   76961篇
  2014年   111564篇
  2013年   177322篇
  2012年   142137篇
  2011年   151339篇
  2010年   132222篇
  2009年   131152篇
  2008年   136130篇
  2007年   146111篇
  2006年   153570篇
  2005年   148151篇
  2004年   147584篇
  2003年   137040篇
  2002年   125805篇
  2001年   179910篇
  2000年   176437篇
  1999年   159999篇
  1998年   74121篇
  1997年   69186篇
  1996年   67255篇
  1995年   62611篇
  1994年   56720篇
  1993年   52641篇
  1992年   117654篇
  1991年   114358篇
  1990年   110199篇
  1989年   106819篇
  1988年   98714篇
  1987年   96893篇
  1986年   91780篇
  1985年   89841篇
  1984年   73551篇
  1983年   65248篇
  1982年   50223篇
  1981年   46744篇
  1980年   43816篇
  1979年   65095篇
  1978年   51708篇
  1977年   44996篇
  1976年   42497篇
  1975年   42962篇
  1974年   48256篇
  1973年   46462篇
  1972年   43593篇
  1971年   40712篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
82.
83.
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   
84.
85.
86.
87.
88.
89.
90.
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   

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