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   4083547篇
  免费   319966篇
  国内免费   15437篇
耳鼻咽喉   56935篇
儿科学   127771篇
妇产科学   108203篇
基础医学   625413篇
口腔科学   114606篇
临床医学   365281篇
内科学   732199篇
皮肤病学   104283篇
神经病学   343243篇
特种医学   161641篇
外国民族医学   736篇
外科学   627027篇
综合类   122808篇
现状与发展   24篇
一般理论   2501篇
预防医学   334126篇
眼科学   94898篇
药学   286520篇
  23篇
中国医学   11503篇
肿瘤学   199209篇
  2021年   55589篇
  2020年   35487篇
  2019年   58542篇
  2018年   72766篇
  2017年   55741篇
  2016年   61750篇
  2015年   75217篇
  2014年   109565篇
  2013年   175161篇
  2012年   107613篇
  2011年   110141篇
  2010年   121151篇
  2009年   124422篇
  2008年   97311篇
  2007年   103258篇
  2006年   112933篇
  2005年   107989篇
  2004年   109935篇
  2003年   100810篇
  2002年   90671篇
  2001年   141649篇
  2000年   136062篇
  1999年   128215篇
  1998年   69096篇
  1997年   65840篇
  1996年   63502篇
  1995年   58893篇
  1994年   53239篇
  1993年   49457篇
  1992年   93768篇
  1991年   89779篇
  1990年   86637篇
  1989年   85164篇
  1988年   78895篇
  1987年   77717篇
  1986年   73949篇
  1985年   72797篇
  1984年   62156篇
  1983年   55257篇
  1982年   46330篇
  1981年   43324篇
  1980年   40801篇
  1979年   54318篇
  1978年   44879篇
  1977年   40316篇
  1976年   36895篇
  1975年   37191篇
  1974年   40873篇
  1973年   39287篇
  1972年   37079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.
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