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   2502495篇
  免费   227655篇
  国内免费   12605篇
耳鼻咽喉   34270篇
儿科学   78588篇
妇产科学   62251篇
基础医学   424656篇
口腔科学   66111篇
临床医学   223567篇
内科学   420389篇
皮肤病学   74821篇
神经病学   222971篇
特种医学   98789篇
外国民族医学   26篇
外科学   397468篇
综合类   81710篇
现状与发展   23篇
一般理论   1999篇
预防医学   215853篇
眼科学   55955篇
药学   166857篇
  22篇
中国医学   7753篇
肿瘤学   108676篇
  2022年   22490篇
  2021年   54079篇
  2020年   34522篇
  2019年   57375篇
  2018年   68583篇
  2017年   52100篇
  2016年   57369篇
  2015年   72275篇
  2014年   106221篇
  2013年   171098篇
  2012年   65613篇
  2011年   61231篇
  2010年   108784篇
  2009年   115600篇
  2008年   49007篇
  2007年   48277篇
  2006年   60776篇
  2005年   56606篇
  2004年   59177篇
  2003年   50786篇
  2002年   40933篇
  2001年   52084篇
  2000年   43142篇
  1999年   53598篇
  1998年   59642篇
  1997年   58995篇
  1996年   56590篇
  1995年   52221篇
  1994年   46401篇
  1993年   43542篇
  1992年   34443篇
  1991年   32070篇
  1990年   29494篇
  1989年   30042篇
  1988年   28133篇
  1987年   27410篇
  1986年   26109篇
  1985年   27616篇
  1984年   30700篇
  1983年   29684篇
  1982年   35589篇
  1981年   34111篇
  1980年   32250篇
  1979年   22968篇
  1978年   24435篇
  1977年   23530篇
  1976年   21283篇
  1975年   18792篇
  1974年   17302篇
  1973年   16546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