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   3709884篇
  免费   309732篇
  国内免费   13757篇
耳鼻咽喉   50889篇
儿科学   118357篇
妇产科学   97227篇
基础医学   580792篇
口腔科学   102800篇
临床医学   331401篇
内科学   661293篇
皮肤病学   95195篇
神经病学   316937篇
特种医学   148556篇
外国民族医学   497篇
外科学   572290篇
综合类   113730篇
现状与发展   23篇
一般理论   2375篇
预防医学   309435篇
眼科学   85754篇
药学   259653篇
  22篇
中国医学   10127篇
肿瘤学   176020篇
  2021年   55075篇
  2020年   35085篇
  2019年   58001篇
  2018年   71427篇
  2017年   54463篇
  2016年   60254篇
  2015年   74244篇
  2014年   108518篇
  2013年   173602篇
  2012年   97191篇
  2011年   97583篇
  2010年   117737篇
  2009年   122057篇
  2008年   85343篇
  2007年   88665篇
  2006年   99633篇
  2005年   94738篇
  2004年   97332篇
  2003年   87796篇
  2002年   77647篇
  2001年   120857篇
  2000年   115167篇
  1999年   111714篇
  1998年   67014篇
  1997年   64583篇
  1996年   62572篇
  1995年   58193篇
  1994年   52343篇
  1993年   48886篇
  1992年   82942篇
  1991年   79409篇
  1990年   75964篇
  1989年   74628篇
  1988年   69461篇
  1987年   68146篇
  1986年   64942篇
  1985年   64816篇
  1984年   56589篇
  1983年   51292篇
  1982年   44755篇
  1981年   41915篇
  1980年   39513篇
  1979年   48965篇
  1978年   40958篇
  1977年   36777篇
  1976年   34077篇
  1975年   32841篇
  1974年   35540篇
  1973年   34205篇
  1972年   31700篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
2.
3.
4.
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   
5.
6.
7.
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   

8.
9.
10.
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