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   31684篇
  免费   4933篇
  国内免费   625篇
耳鼻咽喉   130篇
儿科学   491篇
妇产科学   414篇
基础医学   1456篇
口腔科学   686篇
临床医学   7188篇
内科学   2175篇
皮肤病学   153篇
神经病学   1291篇
特种医学   374篇
外国民族医学   5篇
外科学   3934篇
综合类   4282篇
现状与发展   1篇
一般理论   24篇
预防医学   6552篇
眼科学   221篇
药学   2706篇
  73篇
中国医学   4017篇
肿瘤学   1069篇
  2024年   215篇
  2023年   1014篇
  2022年   1348篇
  2021年   2002篇
  2020年   2203篇
  2019年   1916篇
  2018年   1737篇
  2017年   1833篇
  2016年   1645篇
  2015年   1567篇
  2014年   2458篇
  2013年   2995篇
  2012年   2003篇
  2011年   2119篇
  2010年   1603篇
  2009年   1403篇
  2008年   1463篇
  2007年   1391篇
  2006年   1241篇
  2005年   888篇
  2004年   740篇
  2003年   703篇
  2002年   488篇
  2001年   410篇
  2000年   395篇
  1999年   259篇
  1998年   228篇
  1997年   196篇
  1996年   174篇
  1995年   119篇
  1994年   87篇
  1993年   77篇
  1992年   51篇
  1991年   40篇
  1990年   54篇
  1989年   29篇
  1988年   27篇
  1987年   18篇
  1986年   17篇
  1985年   21篇
  1984年   9篇
  1983年   6篇
  1982年   8篇
  1981年   6篇
  1980年   10篇
  1979年   5篇
  1978年   3篇
  1977年   3篇
  1975年   3篇
  1974年   8篇
排序方式: 共有10000条查询结果,搜索用时 187 毫秒
21.
22.
23.
ObjectiveTo explore the views of the Internet in childhood, identifying both health assets and risks.MethodA qualitative study was performed using 14 focus groups, eight of which comprised boys and girls, four of which comprised parents and two of which were mixed (children and parents) in primary schools in urban and rural settings in Andalusia (Spain). Teachers in these schools were also asked to complete an online questionnaire using LimeSurvey. This study involved 114 individuals: 64 pupils (33 girls and 31 boys), 28 parents (18 mothers and 10 fathers), and 22 teachers (14 women and 8 men). Analysis of manifest content and underlying meanings was carried out. QSR NVivo 9 software was used to facilitate analysis and make it systematic.ResultsOur findings show how the differences in the way parents and children understand health and wellbeing affect the way they discuss the Internet and health. The discussion of results looks at the implications of computer literacy for public health and wellbeing, particularly with regard to health assets.ConclusionsParents and children understand the contribution of the Internet to health and wellbeing differently. Whilst parents emphasize the risks (unsafe environment, relationships and quality of information, social networks, physical problems and addiction), the children emphasize the assets offered by the Internet.  相似文献   
24.
25.
沙苑子本草考证   总被引:1,自引:0,他引:1  
张婷婷  柯创  秦路平  吴建军 《中草药》2020,51(16):4348-4354
沙苑子为我国常用中药,药用历史悠久。通过查阅本草文献,对沙苑子名称、基原、功效、产地及伪品5个方面进行考证,得知其名称演变大致经过"白蒺藜""沙苑蒺藜""沙苑子"3个阶段;历代本草记载沙苑子基原为扁茎黄芪的干燥成熟种子,古今应用品种基本一致;沙苑子补肾固精功效的记载自宋《本草衍义》起逐渐清晰明确;沙苑子道地产区自宋时起为陕西沙苑,明清时期产地逐渐转到陕西潼关、山西等地,建国后以陕西省为主向北扩散,以陕西潼关为佳;沙苑子建国前有马薸子、色微绿伪品及紫云英子等混伪品,建国后有紫云英、猪屎豆、华黄芪和直立黄芪的种子等混伪品。为沙苑子正本清源,并为其进一步深入开发提供参考。  相似文献   
26.
The specialty of emergency medicine in Australasia is coming of age. As part of this maturation there is a need for high‐quality evidence to inform practice. This article describes the development of the New Zealand Emergency Medicine Network, a collaboration of committed emergency care researchers who share the vision that New Zealand/Aotearoa will have a world‐leading, patient‐centred emergency care research network, which will improve emergency care for all, so that people coming to any ED in the country will have access to the same world‐class emergency care.  相似文献   
27.
肝癌是临床上常见的恶性肿瘤,因早期症状不典型,至发现时往往已为中晚期,失去最佳手术治疗时机和机会。作为非手术治疗之一的放射治疗技术,其发展在近年来已有了较大的进步。放疗包括体外放疗和体内放疗,皆具有一定的治疗效果和相对可控的不良反应。本文就肝癌放射治疗的应用进展作一综述。  相似文献   
28.
29.
30.
Conducting high-quality clinical research is dependent on merging scientific rigor with the clinical environment. This is often a complex endeavor that may include numerous barriers and competing interests. Overcoming these challenges and successfully integrating clinical research programs into clinical practice settings serving rehabilitation outpatients is beneficial from both a logistical perspective (eg, supports efficient and successful research procedures) and the establishment of a truly patient-centered research approach. Leveraging our experience with navigating this research-clinical care relationship, this article (1) proposes the Patient-Centered Framework for Rehabilitation Research, a model for integrating patient-centered research in an outpatient clinical setting that incorporates a collaborative, team-based model encompassing patient-centered values, as well as strategies for recruitment and retention, with a focus on populations living with disabilities or chronic diseases; (2) describes application of this framework in a comprehensive specialty multiple sclerosis center with both general strategies and specific examples to guide adaptation and implementation in other settings; and (3) discusses the effect of the framework as a model in 1 center, as well as the need for additional investigation and adaptation for other populations. The 5 interconnected principles incorporated in the Framework and which prioritize patient-centeredness include identifying shared values, partnering with the clinical setting, engaging with the population, building relationships with individuals, and designing accessible procedures. The Patient-Centered Framework for Rehabilitation Research is a model presented as an adaptable roadmap to guide researchers in hopes of not only improving individual patients’ experiences but also the quality and relevance of rehabilitation research as a whole. Future investigation is needed to test the Framework in other settings.  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