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   4650篇
  免费   544篇
  国内免费   34篇
耳鼻咽喉   15篇
儿科学   67篇
妇产科学   69篇
基础医学   218篇
口腔科学   186篇
临床医学   1601篇
内科学   172篇
皮肤病学   16篇
神经病学   140篇
特种医学   122篇
外科学   243篇
综合类   567篇
一般理论   3篇
预防医学   1302篇
眼科学   16篇
药学   294篇
  53篇
中国医学   84篇
肿瘤学   60篇
  2024年   8篇
  2023年   121篇
  2022年   135篇
  2021年   227篇
  2020年   275篇
  2019年   235篇
  2018年   217篇
  2017年   220篇
  2016年   211篇
  2015年   224篇
  2014年   337篇
  2013年   481篇
  2012年   260篇
  2011年   255篇
  2010年   205篇
  2009年   219篇
  2008年   220篇
  2007年   187篇
  2006年   211篇
  2005年   165篇
  2004年   121篇
  2003年   104篇
  2002年   97篇
  2001年   88篇
  2000年   83篇
  1999年   50篇
  1998年   36篇
  1997年   40篇
  1996年   21篇
  1995年   25篇
  1994年   20篇
  1993年   21篇
  1992年   20篇
  1991年   15篇
  1990年   8篇
  1989年   7篇
  1988年   10篇
  1987年   6篇
  1986年   2篇
  1985年   5篇
  1984年   10篇
  1983年   2篇
  1982年   7篇
  1981年   5篇
  1980年   2篇
  1979年   4篇
  1978年   1篇
  1977年   1篇
  1975年   2篇
  1973年   2篇
排序方式: 共有5228条查询结果,搜索用时 171 毫秒
81.
全志伟  汤朝晖 《腹部外科》2014,27(5):313-316
我国是一个胆道疾病高发的国家,随着时代发展,胆道外科疾病的结构发生了明显变化,胆囊结石、胆道恶性肿瘤发生率明显上升;科学技术的发展给胆道外科带来了新的气象,腹腔镜技术、内镜微创技术、机器人辅助外科系统的应用及三维影像重建技术等影像学的发展,使胆道外科手术方式出现了巨大变化,胆道疾病外科诊治观念面临着更新和拓展。因此,胆道外科专科医师的规范化管理培训显得格外重要。  相似文献   
82.
83.
Abstract

Objective: The aim of this study was to identify work-related stress factors that contributed to work-related stress among Swedish occupational therapists and to investigate the association between work-related stress, demographic factors, and perceived overall stress. Methods: A postal questionnaire and a letter of invitation were sent to 807 Swedish occupational therapists, selected at random and representing 10% of occupational therapists working in Sweden. The response rate was 59%. A stress index presenting 49 stress factors graded on a scale from 1 (indicating no source of stress) to 6 (definitely a source of stress) was included. In addition, the level of perceived overall stress during the last two weeks was scored on a rating scale with the end points 0 (no stress) and 10 (extreme stress). Results: The main findings indicated that lack of resources and lack of time were the main stressors. “Working at a superficial level due to lack of time” was the only variable associated with high overall stress when both work-related and personal factors were included. Professional identity and clarity concerning the role were graded low with regard to stress. Conclusions: Work-related stress is just one aspect of the overall stress experienced but knowledge about its consequences highlights the importance of further studies.  相似文献   
84.
85.
86.
87.
88.
89.
目的 在药学专业型研究生培养中探索儿童药物临床研究人才的培养模式。方法 分析儿童药物临床研究者应具备的素质,构建系统化、多层次的医教协同培养机制,以应用为导向优化课程体系,以儿科药物治疗需求为驱动引导学位论文选题,加强培养过程监管。通过促进研究生角色和观念转换,进行儿童药物临床研究技术培训,促进成果转化,强化研究生儿童药物临床研究能力培养。结果 初步建成了基于医教协同理念的儿童药物临床研究人才培养模式,培养的研究生符合社会与行业需求。结论 构建医教协同培养机制是培养儿童药物临床研究人才的重要路径。  相似文献   
90.

Introduction

Healthcare professionals must sufficiently understand ionising radiation and the associated protection measures to avoid unnecessarily exposing patients and staff to ionising radiation. Hence, a proper safety culture is important to lowering health risks. The development and establishment of an instrument that can indicate healthcare professionals' understanding/knowledge of radiation protection concepts can greatly contribute to a good safety culture.The purpose of the present study was to develop and psychometrically test the Healthcare Professional Knowledge of Radiation Protection (HPKRP) self-evaluation scale, which was designed to measure the knowledge level of radiation protection by healthcare professionals working with ionising radiation in a clinical environment.

Methods

The presented research employed a cross-sectional study design. Data were collected from eight Finnish hospitals in 2017. A total of 252 eligible nurses responded to the newly developed HPKRP scale. The face and content validity were tested with the Content Validity Index (CVI). Explorative factor analysis was used to test construct validity, whereas reliability was tested with Cronbach's alpha.

Results

Overall S-CVI for the HPKRP scale was 0.83. Exploratory factor analysis revealed a three-factor model for the HcPCRP scale containing 33 items. The first factor was defined by Radiation physics and principles of radiation usage, the second factor by Radiation protection, and the third factor by Guidelines of safe ionising radiation usage. These three factors explained 72% of the total variance. Cronbach's alpha coefficient for the scale ranged from 0.93 to 0.96.

Conclusion

The results provide strong evidence for the validity and reliability of the HPKRP scale. Additionally, educators can use the scale to evaluate healthcare students' understanding in radiation safety before and after education.  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