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   4312056篇
  免费   339444篇
  国内免费   18589篇
耳鼻咽喉   59511篇
儿科学   136949篇
妇产科学   111537篇
基础医学   657655篇
口腔科学   114996篇
临床医学   394544篇
内科学   769506篇
皮肤病学   107285篇
神经病学   353325篇
特种医学   167036篇
外国民族医学   541篇
外科学   654388篇
综合类   140209篇
现状与发展   36篇
一般理论   2635篇
预防医学   365529篇
眼科学   99974篇
药学   304115篇
  145篇
中国医学   19673篇
肿瘤学   210500篇
  2021年   59323篇
  2020年   38577篇
  2019年   60274篇
  2018年   75969篇
  2017年   59047篇
  2016年   64458篇
  2015年   78935篇
  2014年   114208篇
  2013年   180663篇
  2012年   129863篇
  2011年   135414篇
  2010年   132574篇
  2009年   133135篇
  2008年   120069篇
  2007年   127058篇
  2006年   134907篇
  2005年   128994篇
  2004年   127724篇
  2003年   117599篇
  2002年   106423篇
  2001年   151105篇
  2000年   145535篇
  1999年   134742篇
  1998年   70425篇
  1997年   66511篇
  1996年   64712篇
  1995年   59952篇
  1994年   54012篇
  1993年   50254篇
  1992年   96150篇
  1991年   92744篇
  1990年   89151篇
  1989年   86924篇
  1988年   80122篇
  1987年   78591篇
  1986年   73937篇
  1985年   73056篇
  1984年   61724篇
  1983年   55500篇
  1982年   46079篇
  1981年   43191篇
  1980年   40553篇
  1979年   53122篇
  1978年   44053篇
  1977年   38913篇
  1976年   36300篇
  1975年   36291篇
  1974年   39414篇
  1973年   37637篇
  1972年   35253篇
排序方式: 共有10000条查询结果,搜索用时 9 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