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   3683902篇
  免费   291578篇
  国内免费   20855篇
耳鼻咽喉   50086篇
儿科学   111587篇
妇产科学   94962篇
基础医学   568579篇
口腔科学   99423篇
临床医学   327734篇
内科学   651733篇
皮肤病学   94665篇
神经病学   311486篇
特种医学   146033篇
外国民族医学   492篇
外科学   568167篇
综合类   125961篇
现状与发展   44篇
一般理论   2276篇
预防医学   299671篇
眼科学   83568篇
药学   259885篇
  137篇
中国医学   16675篇
肿瘤学   183171篇
  2021年   59673篇
  2020年   38666篇
  2019年   61057篇
  2018年   84623篇
  2017年   65710篇
  2016年   72515篇
  2015年   78787篇
  2014年   114109篇
  2013年   179371篇
  2012年   102312篇
  2011年   108499篇
  2010年   129502篇
  2009年   131377篇
  2008年   93760篇
  2007年   98922篇
  2006年   98153篇
  2005年   94539篇
  2004年   94851篇
  2003年   86651篇
  2002年   75523篇
  2001年   111446篇
  2000年   104596篇
  1999年   103212篇
  1998年   66244篇
  1997年   64136篇
  1996年   61463篇
  1995年   56879篇
  1994年   51122篇
  1993年   47526篇
  1992年   72419篇
  1991年   68650篇
  1990年   65559篇
  1989年   64786篇
  1988年   60622篇
  1987年   59219篇
  1986年   56660篇
  1985年   56245篇
  1984年   50642篇
  1983年   45922篇
  1982年   42445篇
  1981年   39840篇
  1980年   37726篇
  1979年   43080篇
  1978年   37458篇
  1977年   34319篇
  1976年   31124篇
  1975年   30710篇
  1974年   32481篇
  1973年   31127篇
  1972年   29550篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
82.
83.
84.
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   
85.
86.
87.
88.
89.
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   

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