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   4270138篇
  免费   332924篇
  国内免费   13971篇
耳鼻咽喉   59094篇
儿科学   136133篇
妇产科学   111581篇
基础医学   658557篇
口腔科学   114885篇
临床医学   386924篇
内科学   769966篇
皮肤病学   106616篇
神经病学   355206篇
特种医学   165260篇
外国民族医学   511篇
外科学   652366篇
综合类   119503篇
现状与发展   23篇
一般理论   2617篇
预防医学   360153篇
眼科学   99672篇
药学   297588篇
  26篇
中国医学   11433篇
肿瘤学   208919篇
  2021年   56170篇
  2020年   35757篇
  2019年   58829篇
  2018年   74302篇
  2017年   56804篇
  2016年   62899篇
  2015年   75902篇
  2014年   110442篇
  2013年   175758篇
  2012年   124385篇
  2011年   130135篇
  2010年   126442篇
  2009年   127718篇
  2008年   116169篇
  2007年   123759篇
  2006年   132207篇
  2005年   127118篇
  2004年   126864篇
  2003年   117086篇
  2002年   106228篇
  2001年   151351篇
  2000年   146259篇
  1999年   135759篇
  1998年   70502篇
  1997年   66507篇
  1996年   64693篇
  1995年   59945篇
  1994年   54033篇
  1993年   50246篇
  1992年   97063篇
  1991年   93602篇
  1990年   89977篇
  1989年   87661篇
  1988年   80847篇
  1987年   79231篇
  1986年   74548篇
  1985年   73647篇
  1984年   62081篇
  1983年   55800篇
  1982年   46171篇
  1981年   43262篇
  1980年   40613篇
  1979年   53492篇
  1978年   44262篇
  1977年   39043篇
  1976年   36424篇
  1975年   36406篇
  1974年   39620篇
  1973年   37849篇
  1972年   35453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.
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.
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   
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