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   4684020篇
  免费   370877篇
  国内免费   16063篇
耳鼻咽喉   67052篇
儿科学   146834篇
妇产科学   124490篇
基础医学   704652篇
口腔科学   130920篇
临床医学   422822篇
内科学   853475篇
皮肤病学   110834篇
神经病学   396236篇
特种医学   186123篇
外国民族医学   1154篇
外科学   713006篇
综合类   135957篇
现状与发展   23篇
一般理论   2710篇
预防医学   393696篇
眼科学   110619篇
药学   331806篇
  24篇
中国医学   12298篇
肿瘤学   226229篇
  2021年   56083篇
  2019年   58893篇
  2018年   74351篇
  2017年   56921篇
  2016年   63419篇
  2015年   76364篇
  2014年   111319篇
  2013年   176889篇
  2012年   129264篇
  2011年   134764篇
  2010年   126678篇
  2009年   128764篇
  2008年   122041篇
  2007年   130200篇
  2006年   138597篇
  2005年   134059篇
  2004年   134561篇
  2003年   125098篇
  2002年   115506篇
  2001年   174287篇
  2000年   171013篇
  1999年   156322篇
  1998年   73747篇
  1997年   69489篇
  1996年   67295篇
  1995年   63056篇
  1994年   57117篇
  1993年   52920篇
  1992年   116559篇
  1991年   111695篇
  1990年   106887篇
  1989年   104005篇
  1988年   96791篇
  1987年   95015篇
  1986年   90575篇
  1985年   88286篇
  1984年   73105篇
  1983年   64825篇
  1982年   50631篇
  1981年   46835篇
  1980年   44122篇
  1979年   65153篇
  1978年   51621篇
  1977年   45435篇
  1976年   42338篇
  1975年   42293篇
  1974年   48075篇
  1973年   46093篇
  1972年   43337篇
  1971年   39773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.
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