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   3447787篇
  免费   288927篇
  国内免费   13326篇
耳鼻咽喉   47120篇
儿科学   109554篇
妇产科学   89563篇
基础医学   549485篇
口腔科学   93398篇
临床医学   314816篇
内科学   609852篇
皮肤病学   91451篇
神经病学   295400篇
特种医学   134634篇
外国民族医学   300篇
外科学   526710篇
综合类   102484篇
现状与发展   24篇
一般理论   2373篇
预防医学   295972篇
眼科学   78567篇
药学   236006篇
  27篇
中国医学   9358篇
肿瘤学   162946篇
  2021年   54997篇
  2020年   35078篇
  2019年   57994篇
  2018年   71298篇
  2017年   54371篇
  2016年   59778篇
  2015年   73951篇
  2014年   108069篇
  2013年   173315篇
  2012年   94735篇
  2011年   95340篇
  2010年   117151篇
  2009年   121418篇
  2008年   82563篇
  2007年   86081篇
  2006年   95983篇
  2005年   91676篇
  2004年   93233篇
  2003年   83960篇
  2002年   73827篇
  2001年   102952篇
  2000年   95604篇
  1999年   95596篇
  1998年   64664篇
  1997年   62705篇
  1996年   60838篇
  1995年   56260篇
  1994年   50500篇
  1993年   47183篇
  1992年   67812篇
  1991年   65102篇
  1990年   61729篇
  1989年   60850篇
  1988年   56711篇
  1987年   55414篇
  1986年   52884篇
  1985年   52437篇
  1984年   48287篇
  1983年   44438篇
  1982年   41783篇
  1981年   39479篇
  1980年   37224篇
  1979年   40812篇
  1978年   36361篇
  1977年   32938篇
  1976年   30216篇
  1975年   29086篇
  1974年   30614篇
  1973年   29692篇
  1972年   27966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