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   4942513篇
  免费   381752篇
  国内免费   15623篇
耳鼻咽喉   69178篇
儿科学   158202篇
妇产科学   130108篇
基础医学   741121篇
口腔科学   137228篇
临床医学   454351篇
内科学   901815篇
皮肤病学   117089篇
神经病学   413676篇
特种医学   193457篇
外国民族医学   968篇
外科学   740299篇
综合类   138994篇
现状与发展   24篇
一般理论   2811篇
预防医学   413188篇
眼科学   115819篇
药学   351880篇
  26篇
中国医学   12984篇
肿瘤学   246670篇
  2021年   56867篇
  2019年   59313篇
  2018年   76138篇
  2017年   58394篇
  2016年   64763篇
  2015年   77240篇
  2014年   111686篇
  2013年   177373篇
  2012年   140185篇
  2011年   148088篇
  2010年   130955篇
  2009年   130954篇
  2008年   133431篇
  2007年   143269篇
  2006年   150847篇
  2005年   145076篇
  2004年   145886篇
  2003年   135737篇
  2002年   124361篇
  2001年   197237篇
  2000年   194205篇
  1999年   174292篇
  1998年   75889篇
  1997年   70609篇
  1996年   68793篇
  1995年   64351篇
  1994年   58202篇
  1993年   54025篇
  1992年   128584篇
  1991年   123390篇
  1990年   118835篇
  1989年   115382篇
  1988年   106282篇
  1987年   104334篇
  1986年   98423篇
  1985年   95830篇
  1984年   77788篇
  1983年   68471篇
  1982年   51640篇
  1981年   47721篇
  1980年   44739篇
  1979年   67698篇
  1978年   53054篇
  1977年   46615篇
  1976年   43241篇
  1975年   44074篇
  1974年   48995篇
  1973年   46932篇
  1972年   43932篇
  1971年   40623篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
62.
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   
63.
64.
65.
66.
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   

67.
68.
69.
70.
Graefe's Archive for Clinical and Experimental Ophthalmology - The published online version contains mistake as the author's first name and last name have been interchanged as "Hild...  相似文献   
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