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   4289073篇
  免费   350308篇
  国内免费   15332篇
耳鼻咽喉   61042篇
儿科学   133269篇
妇产科学   112032篇
基础医学   656024篇
口腔科学   118849篇
临床医学   388589篇
内科学   777217篇
皮肤病学   103413篇
神经病学   367246篇
特种医学   171007篇
外国民族医学   912篇
外科学   653337篇
综合类   126252篇
现状与发展   23篇
一般理论   2594篇
预防医学   362936篇
眼科学   100607篇
药学   302603篇
  24篇
中国医学   11370篇
肿瘤学   205367篇
  2021年   56010篇
  2020年   35642篇
  2019年   58767篇
  2018年   73435篇
  2017年   56060篇
  2016年   62396篇
  2015年   75735篇
  2014年   110481篇
  2013年   175875篇
  2012年   118429篇
  2011年   121617篇
  2010年   123189篇
  2009年   126251篇
  2008年   108360篇
  2007年   114878篇
  2006年   124352篇
  2005年   119402篇
  2004年   120283篇
  2003年   110908篇
  2002年   101490篇
  2001年   154403篇
  2000年   150521篇
  1999年   139594篇
  1998年   71291篇
  1997年   67767篇
  1996年   65647篇
  1995年   61512篇
  1994年   55586篇
  1993年   51612篇
  1992年   103629篇
  1991年   98989篇
  1990年   94085篇
  1989年   91722篇
  1988年   85333篇
  1987年   83808篇
  1986年   79498篇
  1985年   77935篇
  1984年   65959篇
  1983年   58871篇
  1982年   48143篇
  1981年   44887篇
  1980年   42182篇
  1979年   57846篇
  1978年   47053篇
  1977年   41602篇
  1976年   38664篇
  1975年   37871篇
  1974年   42435篇
  1973年   40570篇
  1972年   38037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.
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