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   4274211篇
  免费   352306篇
  国内免费   15247篇
耳鼻咽喉   60883篇
儿科学   132909篇
妇产科学   111711篇
基础医学   654547篇
口腔科学   118682篇
临床医学   387326篇
内科学   774808篇
皮肤病学   103199篇
神经病学   366107篇
特种医学   170489篇
外国民族医学   912篇
外科学   651523篇
综合类   126075篇
现状与发展   23篇
一般理论   2578篇
预防医学   361973篇
眼科学   100390篇
药学   301622篇
  24篇
中国医学   11356篇
肿瘤学   204627篇
  2021年   55630篇
  2020年   35457篇
  2019年   58569篇
  2018年   73136篇
  2017年   55848篇
  2016年   62154篇
  2015年   75465篇
  2014年   110182篇
  2013年   175493篇
  2012年   117176篇
  2011年   120201篇
  2010年   122738篇
  2009年   125926篇
  2008年   107424篇
  2007年   113915篇
  2006年   123461篇
  2005年   118601篇
  2004年   119562篇
  2003年   110314篇
  2002年   100928篇
  2001年   154289篇
  2000年   150447篇
  1999年   139519篇
  1998年   71250篇
  1997年   67737篇
  1996年   65618篇
  1995年   61481篇
  1994年   55560篇
  1993年   51596篇
  1992年   103555篇
  1991年   98939篇
  1990年   94042篇
  1989年   91682篇
  1988年   85302篇
  1987年   83768篇
  1986年   79460篇
  1985年   77898篇
  1984年   65935篇
  1983年   58845篇
  1982年   48127篇
  1981年   44869篇
  1980年   42164篇
  1979年   57821篇
  1978年   47028篇
  1977年   41590篇
  1976年   38650篇
  1975年   37846篇
  1974年   42415篇
  1973年   40547篇
  1972年   38015篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
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   
82.
83.
84.
85.
86.
87.
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   

88.
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