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   3842314篇
  免费   313738篇
  国内免费   15303篇
耳鼻咽喉   52331篇
儿科学   121183篇
妇产科学   98675篇
基础医学   593479篇
口腔科学   103471篇
临床医学   352659篇
内科学   688740篇
皮肤病学   102489篇
神经病学   324109篇
特种医学   149387篇
外国民族医学   264篇
外科学   597672篇
综合类   114255篇
现状与发展   91篇
一般理论   2378篇
预防医学   314030篇
眼科学   90913篇
药学   262350篇
  26篇
中国医学   11428篇
肿瘤学   191425篇
  2021年   56661篇
  2020年   37751篇
  2019年   59215篇
  2018年   75861篇
  2017年   58646篇
  2016年   64850篇
  2015年   78491篇
  2014年   115392篇
  2013年   180740篇
  2012年   107446篇
  2011年   109480篇
  2010年   125346篇
  2009年   129507篇
  2008年   96105篇
  2007年   99940篇
  2006年   110185篇
  2005年   104189篇
  2004年   105454篇
  2003年   95150篇
  2002年   84379篇
  2001年   137453篇
  2000年   130628篇
  1999年   123084篇
  1998年   70096篇
  1997年   66489篇
  1996年   63883篇
  1995年   59359篇
  1994年   53053篇
  1993年   49260篇
  1992年   85391篇
  1991年   81414篇
  1990年   77040篇
  1989年   75509篇
  1988年   69345篇
  1987年   67495篇
  1986年   63865篇
  1985年   63002篇
  1984年   55022篇
  1983年   49701篇
  1982年   43732篇
  1981年   41077篇
  1980年   38537篇
  1979年   44915篇
  1978年   38314篇
  1977年   34996篇
  1976年   32012篇
  1975年   30826篇
  1974年   32535篇
  1973年   31228篇
  1972年   29089篇
排序方式: 共有10000条查询结果,搜索用时 15 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.
8.
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   

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