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   7927篇
  免费   572篇
  国内免费   165篇
耳鼻咽喉   190篇
儿科学   56篇
妇产科学   122篇
基础医学   1271篇
口腔科学   117篇
临床医学   608篇
内科学   1726篇
皮肤病学   256篇
神经病学   524篇
特种医学   615篇
外科学   1049篇
综合类   20篇
一般理论   2篇
预防医学   184篇
眼科学   182篇
药学   818篇
中国医学   108篇
肿瘤学   816篇
  2023年   34篇
  2022年   29篇
  2021年   214篇
  2020年   142篇
  2019年   256篇
  2018年   286篇
  2017年   255篇
  2016年   388篇
  2015年   513篇
  2014年   545篇
  2013年   609篇
  2012年   945篇
  2011年   846篇
  2010年   533篇
  2009年   390篇
  2008年   509篇
  2007年   467篇
  2006年   389篇
  2005年   370篇
  2004年   265篇
  2003年   241篇
  2002年   222篇
  2001年   33篇
  2000年   29篇
  1999年   24篇
  1998年   20篇
  1997年   16篇
  1996年   7篇
  1995年   9篇
  1994年   11篇
  1993年   12篇
  1992年   8篇
  1991年   5篇
  1990年   5篇
  1989年   4篇
  1988年   4篇
  1987年   3篇
  1986年   2篇
  1985年   4篇
  1984年   3篇
  1983年   1篇
  1982年   3篇
  1981年   4篇
  1980年   6篇
  1979年   1篇
  1974年   1篇
  1966年   1篇
排序方式: 共有8664条查询结果,搜索用时 234 毫秒
1.
Erythema induratum of Bazin (EIB) is a form of tuberculid resulting from hypersensitivity to tuberculosis antigen. EIB occurs most commonly in middle‐aged women and is not typically seen in children. Here, we present a rare case of EIB, presenting as a chronic nodular panniculitis, in a 10‐year‐old Korean boy.  相似文献   
2.
3.
4.
5.
6.

The growing use of evidence-based preventive interventions for youth substance use in Latin American countries has prompted governments, researchers, and practitioners to ask if communities are ready for implementing these interventions, especially in light of the elevated costs and long-term commitment necessary for successful implementation. This study explores the construct validity of a measure of community readiness for prevention, using confirmatory factor and latent profile analyses of 7 measures theorized to be indicators of community readiness for implementing preventive interventions for youth substance use. Data were obtained from 211 community leaders in 16 communities in Colombia. Results indicate that community readiness can be represented as a unidimensional construct with multiple profiles of varying levels of readiness. Findings suggest that community readiness can be measured adequately as a latent construct and that its indicators can be used diagnostically to assess areas where readiness could be improved for better implementation of evidence-based preventive interventions.

  相似文献   
7.
8.
The topography of the facial muscles differs between males and females and among individuals of the same gender. To explain the unique expressions that people can make, it is important to define the shapes of the muscle, their associations with the skin, and their relative functions. Three‐dimensional (3D) motion‐capture analysis, often used to study facial expression, was used in this study to identify characteristic skin movements in males and females when they made six representative basic expressions. The movements of 44 reflective markers (RMs) positioned on anatomical landmarks were measured. Their mean displacement was large in males [ranging from 14.31 mm (fear) to 41.15 mm (anger)], and 3.35–4.76 mm smaller in females [ranging from 9.55 mm (fear) to 37.80 mm (anger)]. The percentages of RMs involved in the ten highest mean maximum displacement values in making at least one expression were 47.6% in males and 61.9% in females. The movements of the RMs were larger in males than females but were more limited. Expanding our understanding of facial expression requires morphological studies of facial muscles and studies of related complex functionality. Conducting these together with quantitative analyses, as in the present study, will yield data valuable for medicine, dentistry, and engineering, for example, for surgical operations on facial regions, software for predicting changes in facial features and expressions after corrective surgery, and the development of face‐mimicking robots. Clin. Anat. 28:735–744, 2015. © 2015 Wiley Periodicals, Inc.  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