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   4303738篇
  免费   350783篇
  国内免费   15330篇
耳鼻咽喉   61287篇
儿科学   133620篇
妇产科学   112163篇
基础医学   657705篇
口腔科学   119302篇
临床医学   390137篇
内科学   779810篇
皮肤病学   103754篇
神经病学   368816篇
特种医学   171235篇
外国民族医学   912篇
外科学   655782篇
综合类   126419篇
现状与发展   23篇
一般理论   2612篇
预防医学   364132篇
眼科学   101020篇
药学   303249篇
  25篇
中国医学   11385篇
肿瘤学   206463篇
  2021年   55851篇
  2020年   35573篇
  2019年   58721篇
  2018年   73459篇
  2017年   56126篇
  2016年   62454篇
  2015年   75671篇
  2014年   110479篇
  2013年   175886篇
  2012年   119640篇
  2011年   123014篇
  2010年   123512篇
  2009年   126460篇
  2008年   110011篇
  2007年   116739篇
  2006年   126065篇
  2005年   121242篇
  2004年   122134篇
  2003年   112819篇
  2002年   103288篇
  2001年   154350篇
  2000年   150496篇
  1999年   139577篇
  1998年   71331篇
  1997年   67800篇
  1996年   65684篇
  1995年   61523篇
  1994年   55595篇
  1993年   51631篇
  1992年   103586篇
  1991年   98963篇
  1990年   94067篇
  1989年   91699篇
  1988年   85324篇
  1987年   83781篇
  1986年   79477篇
  1985年   77930篇
  1984年   65956篇
  1983年   58868篇
  1982年   48158篇
  1981年   44895篇
  1980年   42180篇
  1979年   57835篇
  1978年   47036篇
  1977年   41603篇
  1976年   38655篇
  1975年   37848篇
  1974年   42426篇
  1973年   40558篇
  1972年   38022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.
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