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   2897220篇
  免费   247916篇
  国内免费   12856篇
耳鼻咽喉   39769篇
儿科学   91682篇
妇产科学   72385篇
基础医学   479532篇
口腔科学   75678篇
临床医学   263497篇
内科学   494864篇
皮肤病学   82995篇
神经病学   246968篇
特种医学   114503篇
外国民族医学   79篇
外科学   458229篇
综合类   87959篇
现状与发展   23篇
一般理论   2081篇
预防医学   247276篇
眼科学   65931篇
药学   194695篇
  22篇
中国医学   8613篇
肿瘤学   131211篇
  2022年   22720篇
  2021年   54543篇
  2020年   34756篇
  2019年   57685篇
  2018年   70184篇
  2017年   53310篇
  2016年   58533篇
  2015年   73109篇
  2014年   107099篇
  2013年   172085篇
  2012年   76879篇
  2011年   75871篇
  2010年   113179篇
  2009年   117952篇
  2008年   62374篇
  2007年   64184篇
  2006年   74986篇
  2005年   70773篇
  2004年   72886篇
  2003年   64281篇
  2002年   54404篇
  2001年   72194篇
  2000年   63729篇
  1999年   69924篇
  1998年   61749篇
  1997年   60276篇
  1996年   57961篇
  1995年   53460篇
  1994年   47480篇
  1993年   44552篇
  1992年   46699篇
  1991年   45951篇
  1990年   43572篇
  1989年   43774篇
  1988年   40626篇
  1987年   39803篇
  1986年   37660篇
  1985年   38642篇
  1984年   38316篇
  1983年   35971篇
  1982年   37852篇
  1981年   36077篇
  1980年   34170篇
  1979年   30559篇
  1978年   29353篇
  1977年   27206篇
  1976年   25373篇
  1975年   24389篇
  1974年   23731篇
  1973年   22698篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
82.
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   
83.
84.
85.
86.
87.
88.
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   

89.
90.
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