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   3471129篇
  免费   295745篇
  国内免费   13941篇
耳鼻咽喉   47541篇
儿科学   109634篇
妇产科学   87957篇
基础医学   551949篇
口腔科学   93348篇
临床医学   314486篇
内科学   615824篇
皮肤病学   89673篇
神经病学   299190篇
特种医学   138741篇
外国民族医学   299篇
外科学   537118篇
综合类   106239篇
现状与发展   24篇
一般理论   2308篇
预防医学   295160篇
眼科学   79338篇
药学   238688篇
  24篇
中国医学   9577篇
肿瘤学   163697篇
  2021年   55450篇
  2020年   35257篇
  2019年   58309篇
  2018年   71718篇
  2017年   54569篇
  2016年   60290篇
  2015年   74349篇
  2014年   108742篇
  2013年   173806篇
  2012年   94342篇
  2011年   94394篇
  2010年   117184篇
  2009年   121500篇
  2008年   81053篇
  2007年   84245篇
  2006年   94755篇
  2005年   90151篇
  2004年   92126篇
  2003年   82774篇
  2002年   71854篇
  2001年   111031篇
  2000年   104610篇
  1999年   102204篇
  1998年   66221篇
  1997年   63818篇
  1996年   62022篇
  1995年   57769篇
  1994年   51779篇
  1993年   48376篇
  1992年   73479篇
  1991年   70204篇
  1990年   66527篇
  1989年   65105篇
  1988年   60365篇
  1987年   59032篇
  1986年   55860篇
  1985年   55962篇
  1984年   50416篇
  1983年   45758篇
  1982年   42559篇
  1981年   39973篇
  1980年   37677篇
  1979年   41761篇
  1978年   36563篇
  1977年   33114篇
  1976年   30457篇
  1975年   29027篇
  1974年   30264篇
  1973年   29030篇
  1972年   27028篇
排序方式: 共有10000条查询结果,搜索用时 8 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