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   4960037篇
  免费   392272篇
  国内免费   15460篇
耳鼻咽喉   69583篇
儿科学   159164篇
妇产科学   132864篇
基础医学   740324篇
口腔科学   139228篇
临床医学   467672篇
内科学   904245篇
皮肤病学   120204篇
神经病学   415514篇
特种医学   192432篇
外国民族医学   980篇
外科学   741317篇
综合类   136262篇
现状与发展   60篇
一般理论   2907篇
预防医学   416903篇
眼科学   117042篇
药学   350033篇
  28篇
中国医学   12853篇
肿瘤学   248154篇
  2021年   57460篇
  2019年   59707篇
  2018年   78744篇
  2017年   61481篇
  2016年   67752篇
  2015年   80214篇
  2014年   115397篇
  2013年   181344篇
  2012年   142042篇
  2011年   150139篇
  2010年   133497篇
  2009年   134332篇
  2008年   135984篇
  2007年   145455篇
  2006年   152847篇
  2005年   146828篇
  2004年   147194篇
  2003年   136814篇
  2002年   125832篇
  2001年   192160篇
  2000年   188075篇
  1999年   169926篇
  1998年   75358篇
  1997年   70277篇
  1996年   68479篇
  1995年   63692篇
  1994年   57582篇
  1993年   53353篇
  1992年   125015篇
  1991年   120239篇
  1990年   115824篇
  1989年   112525篇
  1988年   104002篇
  1987年   101925篇
  1986年   96338篇
  1985年   93557篇
  1984年   76387篇
  1983年   67444篇
  1982年   51110篇
  1981年   47288篇
  1980年   44364篇
  1979年   66856篇
  1978年   52785篇
  1977年   46467篇
  1976年   42981篇
  1975年   43958篇
  1974年   49081篇
  1973年   47322篇
  1972年   44538篇
  1971年   41296篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
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   
92.
93.
94.
95.
96.
97.
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   

98.
99.
100.
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