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   5467037篇
  免费   410387篇
  国内免费   18321篇
耳鼻咽喉   76726篇
儿科学   175711篇
妇产科学   145448篇
基础医学   806749篇
口腔科学   154368篇
临床医学   511181篇
内科学   995123篇
皮肤病学   126119篇
神经病学   454109篇
特种医学   211820篇
外国民族医学   1265篇
外科学   808799篇
综合类   155075篇
现状与发展   24篇
一般理论   3060篇
预防医学   464338篇
眼科学   129363篇
药学   390438篇
  30篇
中国医学   14686篇
肿瘤学   271313篇
  2021年   58191篇
  2019年   60290篇
  2018年   78645篇
  2017年   60362篇
  2016年   66917篇
  2015年   78916篇
  2014年   113667篇
  2013年   180067篇
  2012年   159810篇
  2011年   171292篇
  2010年   137789篇
  2009年   135353篇
  2008年   154852篇
  2007年   166860篇
  2006年   173253篇
  2005年   167022篇
  2004年   166877篇
  2003年   155981篇
  2002年   144265篇
  2001年   217859篇
  2000年   216108篇
  1999年   192097篇
  1998年   79069篇
  1997年   72852篇
  1996年   70853篇
  1995年   66463篇
  1994年   60409篇
  1993年   55962篇
  1992年   143650篇
  1991年   138664篇
  1990年   134046篇
  1989年   129772篇
  1988年   119798篇
  1987年   117706篇
  1986年   111583篇
  1985年   108419篇
  1984年   86756篇
  1983年   75934篇
  1982年   54812篇
  1981年   50492篇
  1980年   47341篇
  1979年   77088篇
  1978年   59320篇
  1977年   51515篇
  1976年   48346篇
  1975年   49613篇
  1974年   56494篇
  1973年   54248篇
  1972年   50945篇
  1971年   47298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.
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.
Graefe's Archive for Clinical and Experimental Ophthalmology - The published online version contains mistake as the author's first name and last name have been interchanged as "Hild...  相似文献   
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