全文获取类型
收费全文 | 5759篇 |
免费 | 447篇 |
国内免费 | 16篇 |
专业分类
耳鼻咽喉 | 39篇 |
儿科学 | 144篇 |
妇产科学 | 85篇 |
基础医学 | 768篇 |
口腔科学 | 132篇 |
临床医学 | 664篇 |
内科学 | 1088篇 |
皮肤病学 | 42篇 |
神经病学 | 675篇 |
特种医学 | 231篇 |
外科学 | 766篇 |
综合类 | 68篇 |
一般理论 | 11篇 |
预防医学 | 679篇 |
眼科学 | 55篇 |
药学 | 480篇 |
中国医学 | 11篇 |
肿瘤学 | 284篇 |
出版年
2023年 | 39篇 |
2022年 | 81篇 |
2021年 | 130篇 |
2020年 | 81篇 |
2019年 | 150篇 |
2018年 | 180篇 |
2017年 | 107篇 |
2016年 | 138篇 |
2015年 | 193篇 |
2014年 | 220篇 |
2013年 | 257篇 |
2012年 | 411篇 |
2011年 | 408篇 |
2010年 | 243篇 |
2009年 | 163篇 |
2008年 | 363篇 |
2007年 | 311篇 |
2006年 | 257篇 |
2005年 | 305篇 |
2004年 | 276篇 |
2003年 | 248篇 |
2002年 | 267篇 |
2001年 | 116篇 |
2000年 | 105篇 |
1999年 | 90篇 |
1998年 | 56篇 |
1997年 | 40篇 |
1996年 | 37篇 |
1995年 | 35篇 |
1994年 | 30篇 |
1993年 | 26篇 |
1992年 | 70篇 |
1991年 | 70篇 |
1990年 | 50篇 |
1989年 | 41篇 |
1988年 | 46篇 |
1987年 | 36篇 |
1986年 | 27篇 |
1985年 | 43篇 |
1984年 | 30篇 |
1983年 | 29篇 |
1982年 | 20篇 |
1980年 | 27篇 |
1979年 | 32篇 |
1978年 | 40篇 |
1976年 | 20篇 |
1974年 | 20篇 |
1973年 | 31篇 |
1972年 | 19篇 |
1969年 | 22篇 |
排序方式: 共有6222条查询结果,搜索用时 0 毫秒
101.
102.
The perspectives of stakeholders of intellectual disability liaison nurses: a model of compassionate,person‐centred care 下载免费PDF全文
103.
104.
105.
Establishing priorities on the range of conditions managed by UK community practitioner nurse prescribers: A modified Delphi consensus study 下载免费PDF全文
106.
107.
108.
Matt M. Cirigliano Charlie Guthrie Martin V. Pusic Jennifer E. Lim-Dunham Anderson Spickard III 《Teaching and learning in medicine》2017,29(4):368-372
This Conversations Starter article presents a selected research abstract from the 2017 Association of American Medical Colleges Northeastern Region Group on Educational Affairs annual spring meeting. The abstract is paired with the integrative commentary of three experts who shared their thoughts stimulated by the study. Commentators brainstormed “what's next” with learning analytics in medical education, including advancements in interaction metrics and the use of interactivity analysis to deepen understanding of perceptual, cognitive, and social learning and transfer processes. 相似文献
109.
110.
Anthony Walker Ben Rattray Matt Brearley 《Journal of occupational and environmental hygiene》2017,14(4):306-312
Accurately assessing the physiological status of firefighters during work in the heat is critical to ensuring their safety. Evaluating core temperatures (Tc) in the field is problematic due to cost and limitations in technology and accuracy. As such, fire services rely on individual perceptions of wellbeing. The present study aimed to establish whether perceptual responses measured using the perceptual strain index (PeSI), calculated from rate of perceived exertion (RPE) and thermal sensation (TS), could reliably predict the physiological strain (PSI) encountered by experienced firefighters working in a hot environment. We conducted two firefighting simulations (set-pace and self-paced) in a purposefully built heat chamber (100 ± 5°C) comprised of two 20-min periods separated by a 10-min recovery outside the chamber. Physiological strain was measured via heart rate (HR) and gastrointestinal temperature (Tgi) and compared with PeSI at 5-min intervals. To evaluate the predictive ability of the PeSI for PSI, mean differences and the 95% limits of agreement (LOA) were established, along with correlation coefficients at each 5-min interval. Moderately significant correlations occurred in the second work bout of the self-paced trial only (10 min: r = 0.335, 15 min: r = 0.498, 20 min r = 0.439) with no other correlations observed at any other time during either trial or during the rest periods. Bland-Altman analysis revealed mean differences of ?0.74 ± 2.70 (self-paced) and +0.04 ± 2.04 (set-paced) between PeSI and PSI with the 95% LOA being ?4.77 to 3.28 (self-paced) and ?4.01 to 2.01 (set-paced). The wide LOA and lack of correlations observed between perceptual and physiological strain in both self-paced and set-paced work trials indicate that PeSI is not sufficiently reliable as a sole measure of wellbeing for firefighters working in the heat. Hence, we recommend that fire services prioritise the development of reliable and effective monitoring tools for use in the field. 相似文献