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   3450494篇
  免费   297807篇
  国内免费   13847篇
耳鼻咽喉   47363篇
儿科学   109030篇
妇产科学   87733篇
基础医学   549784篇
口腔科学   93203篇
临床医学   312723篇
内科学   612020篇
皮肤病学   89338篇
神经病学   297615篇
特种医学   138065篇
外国民族医学   299篇
外科学   534160篇
综合类   106170篇
现状与发展   24篇
一般理论   2268篇
预防医学   293853篇
眼科学   78836篇
药学   237599篇
  24篇
中国医学   9549篇
肿瘤学   162492篇
  2021年   55069篇
  2020年   35071篇
  2019年   58076篇
  2018年   71303篇
  2017年   54274篇
  2016年   59954篇
  2015年   74099篇
  2014年   108396篇
  2013年   173444篇
  2012年   92237篇
  2011年   92110篇
  2010年   116537篇
  2009年   121012篇
  2008年   79197篇
  2007年   82384篇
  2006年   93002篇
  2005年   88547篇
  2004年   90530篇
  2003年   81410篇
  2002年   70585篇
  2001年   111126篇
  2000年   104720篇
  1999年   102264篇
  1998年   66185篇
  1997年   63799篇
  1996年   61995篇
  1995年   57746篇
  1994年   51758篇
  1993年   48367篇
  1992年   73562篇
  1991年   70283篇
  1990年   66619篇
  1989年   65175篇
  1988年   60438篇
  1987年   59096篇
  1986年   55922篇
  1985年   56030篇
  1984年   50462篇
  1983年   45798篇
  1982年   42561篇
  1981年   39983篇
  1980年   37682篇
  1979年   41826篇
  1978年   36604篇
  1977年   33148篇
  1976年   30487篇
  1975年   29059篇
  1974年   30301篇
  1973年   29080篇
  1972年   27074篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
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   
82.
83.
84.
85.
86.
87.
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   

88.
89.
90.
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