全文获取类型
收费全文 | 7108篇 |
免费 | 589篇 |
国内免费 | 21篇 |
专业分类
耳鼻咽喉 | 35篇 |
儿科学 | 253篇 |
妇产科学 | 120篇 |
基础医学 | 1088篇 |
口腔科学 | 232篇 |
临床医学 | 686篇 |
内科学 | 1336篇 |
皮肤病学 | 57篇 |
神经病学 | 851篇 |
特种医学 | 154篇 |
外科学 | 863篇 |
综合类 | 84篇 |
一般理论 | 14篇 |
预防医学 | 733篇 |
眼科学 | 162篇 |
药学 | 677篇 |
中国医学 | 19篇 |
肿瘤学 | 354篇 |
出版年
2023年 | 44篇 |
2022年 | 48篇 |
2021年 | 141篇 |
2020年 | 96篇 |
2019年 | 115篇 |
2018年 | 160篇 |
2017年 | 114篇 |
2016年 | 124篇 |
2015年 | 181篇 |
2014年 | 253篇 |
2013年 | 345篇 |
2012年 | 503篇 |
2011年 | 532篇 |
2010年 | 296篇 |
2009年 | 291篇 |
2008年 | 454篇 |
2007年 | 493篇 |
2006年 | 478篇 |
2005年 | 500篇 |
2004年 | 471篇 |
2003年 | 436篇 |
2002年 | 435篇 |
2001年 | 97篇 |
2000年 | 74篇 |
1999年 | 98篇 |
1998年 | 98篇 |
1997年 | 70篇 |
1996年 | 67篇 |
1995年 | 60篇 |
1994年 | 47篇 |
1993年 | 50篇 |
1992年 | 42篇 |
1991年 | 45篇 |
1990年 | 37篇 |
1989年 | 34篇 |
1988年 | 36篇 |
1987年 | 25篇 |
1986年 | 33篇 |
1985年 | 27篇 |
1984年 | 27篇 |
1983年 | 29篇 |
1982年 | 26篇 |
1981年 | 30篇 |
1980年 | 19篇 |
1979年 | 20篇 |
1978年 | 13篇 |
1977年 | 9篇 |
1975年 | 8篇 |
1974年 | 8篇 |
1973年 | 10篇 |
排序方式: 共有7718条查询结果,搜索用时 11 毫秒
101.
102.
Ann C. McKee Nigel J. Cairns Dennis W. Dickson Rebecca D. Folkerth C. Dirk Keene Irene Litvan Daniel P. Perl Thor D. Stein Jean-Paul Vonsattel William Stewart Yorghos Tripodis John F. Crary Kevin F. Bieniek Kristen Dams-O’Connor Victor E. Alvarez Wayne A. Gordon the TBI/CTE group 《Acta neuropathologica》2016,131(1):75-86
103.
Government communication is an important management tool during a public health crisis, but understanding its impact is difficult. Strategies may be adjusted in reaction to developments on the ground and it is challenging to evaluate the impact of communication separately from other crisis management activities. Agent-based modeling is a well-established research tool in social science to respond to similar challenges. However, there have been few such models in public health. We use the example of the TELL ME agent-based model to consider ways in which a non-predictive policy model can assist policy makers. This model concerns individuals’ protective behaviors in response to an epidemic, and the communication that influences such behavior. Drawing on findings from stakeholder workshops and the results of the model itself, we suggest such a model can be useful: (i) as a teaching tool, (ii) to test theory, and (iii) to inform data collection. We also plot a path for development of similar models that could assist with communication planning for epidemics. 相似文献
104.
105.
106.
Preliminary investigation of the variations in root canal morphology of hypomineralised second primary molars
下载免费PDF全文
![点击此处可从《International journal of paediatric dentistry / the British Paedodontic Society [and] the International Association of Dentistry for Children》网站下载免费的PDF全文](/ch/ext_images/free.gif)
107.
108.
109.
Stuart Currie Marios Hadjivassiliou Ian J Craven Iain D Wilkinson Paul D Griffiths Nigel Hoggard 《Cerebellum (London, England)》2013,12(2):245-266
A diagnostic challenge commonly encountered in neurology is that of an adult patient presenting with ataxia. The differential is vast and clinical assessment alone may not be sufficient due to considerable overlap between different causes of ataxia. Magnetic resonance (MR)-based biomarkers such as voxel-based morphometry, MR spectroscopy, diffusion-weighted and diffusion-tensor imaging and functional MR imaging are gaining great attention for their potential as indicators of disease. A number of studies have reported correlation with clinical severity and underlying pathophysiology, and in some cases, MR imaging has been shown to allow differentiation of conditions causing ataxia. However, despite recent advances, their sensitivity and specificity vary. In addition, questions remain over their validity and reproducibility, especially when applied in routine clinical practice. This article extensively reviews the current literature regarding MR-based biomarkers for the patient with predominantly adult-onset ataxia. Imaging features characteristic of a particular ataxia are provided and features differentiating ataxia groups and subgroups are discussed. Finally, discussion will turn to the feasibility of applying these biomarkers in routine clinical practice. 相似文献
110.
Nigel S. George 《The Journal of emergency medicine》2017,52(4):597-598