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   2898311篇
  免费   242659篇
  国内免费   12890篇
耳鼻咽喉   39886篇
儿科学   91594篇
妇产科学   72928篇
基础医学   477490篇
口腔科学   77649篇
临床医学   259713篇
内科学   493623篇
皮肤病学   82404篇
神经病学   248946篇
特种医学   113273篇
外国民族医学   88篇
外科学   455912篇
综合类   88437篇
现状与发展   23篇
一般理论   2098篇
预防医学   248189篇
眼科学   66132篇
药学   195693篇
  22篇
中国医学   8545篇
肿瘤学   131215篇
  2022年   22762篇
  2021年   54387篇
  2020年   34713篇
  2019年   57631篇
  2018年   69692篇
  2017年   52984篇
  2016年   58216篇
  2015年   72932篇
  2014年   106950篇
  2013年   171903篇
  2012年   74878篇
  2011年   73060篇
  2010年   112139篇
  2009年   117619篇
  2008年   60766篇
  2007年   61652篇
  2006年   73280篇
  2005年   69042篇
  2004年   71408篇
  2003年   62708篇
  2002年   52984篇
  2001年   74039篇
  2000年   66158篇
  1999年   71635篇
  1998年   61915篇
  1997年   60403篇
  1996年   58198篇
  1995年   53687篇
  1994年   47846篇
  1993年   44805篇
  1992年   47930篇
  1991年   46287篇
  1990年   43896篇
  1989年   43895篇
  1988年   40762篇
  1987年   39937篇
  1986年   37990篇
  1985年   38866篇
  1984年   38539篇
  1983年   36084篇
  1982年   38102篇
  1981年   36347篇
  1980年   34353篇
  1979年   30934篇
  1978年   29752篇
  1977年   27764篇
  1976年   25493篇
  1975年   24152篇
  1974年   23876篇
  1973年   22651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.
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