全文获取类型
收费全文 | 3696篇 |
免费 | 238篇 |
国内免费 | 4篇 |
专业分类
耳鼻咽喉 | 31篇 |
儿科学 | 60篇 |
妇产科学 | 54篇 |
基础医学 | 524篇 |
口腔科学 | 65篇 |
临床医学 | 309篇 |
内科学 | 904篇 |
皮肤病学 | 95篇 |
神经病学 | 400篇 |
特种医学 | 81篇 |
外科学 | 441篇 |
综合类 | 10篇 |
一般理论 | 3篇 |
预防医学 | 297篇 |
眼科学 | 25篇 |
药学 | 237篇 |
中国医学 | 8篇 |
肿瘤学 | 394篇 |
出版年
2023年 | 23篇 |
2022年 | 72篇 |
2021年 | 154篇 |
2020年 | 62篇 |
2019年 | 133篇 |
2018年 | 149篇 |
2017年 | 89篇 |
2016年 | 80篇 |
2015年 | 88篇 |
2014年 | 146篇 |
2013年 | 194篇 |
2012年 | 289篇 |
2011年 | 285篇 |
2010年 | 171篇 |
2009年 | 145篇 |
2008年 | 206篇 |
2007年 | 177篇 |
2006年 | 188篇 |
2005年 | 183篇 |
2004年 | 148篇 |
2003年 | 142篇 |
2002年 | 142篇 |
2001年 | 79篇 |
2000年 | 61篇 |
1999年 | 61篇 |
1998年 | 29篇 |
1997年 | 34篇 |
1996年 | 19篇 |
1995年 | 21篇 |
1994年 | 22篇 |
1993年 | 15篇 |
1992年 | 54篇 |
1991年 | 46篇 |
1990年 | 30篇 |
1989年 | 28篇 |
1988年 | 21篇 |
1987年 | 15篇 |
1986年 | 23篇 |
1985年 | 18篇 |
1984年 | 11篇 |
1982年 | 5篇 |
1981年 | 5篇 |
1979年 | 12篇 |
1977年 | 6篇 |
1976年 | 5篇 |
1975年 | 4篇 |
1973年 | 4篇 |
1972年 | 4篇 |
1971年 | 5篇 |
1933年 | 4篇 |
排序方式: 共有3938条查询结果,搜索用时 15 毫秒
61.
Recalcitrant granulomatous periorificial dermatitis with good response to low‐dose oral isotretinoin
Nuria Rodriguez‐Garijo Elena Querol‐Cisneros Alejandra Tomas‐Velazquez Angela Estenaga Ester Moreno‐Artero Miguel Angel Idoate Jose Joaquín Paricio Agustin Espaa 《Pediatric dermatology》2019,36(6):980-981
Granulomatous periorificial dermatitis is a clinical variant of periorificial dermatitis. We present the case of an 18‐year‐old girl with several reddish papular lesions in the perioral, perinasal, and periorbital regions unresponsive to conventional therapy. After 6 months of therapy with low‐dose oral isotretinoin, the lesions fully remitted. 相似文献
62.
Maxime Lafond Nuria G. Salido Kevin J. Haworth Alexander S. Hannah Gregory P. Macke Curtis Genstler Christy K. Holland 《Ultrasound in medicine & biology》2021,47(3):693-709
The EkoSonic endovascular system has been cleared by the U.S. Food and Drug Administration for the controlled and selective infusion of physician specified fluids, including thrombolytics, into the peripheral vasculature and the pulmonary arteries. The objective of this study was to explore whether this catheter technology could sustain cavitation nucleated by infused Definity, to support subsequent studies of ultrasound-mediated drug delivery to diseased arteries. The concentration and attenuation spectroscopy of Definity were assayed before and after infusion at 0.3, 2.0 and 4.0 mL/min through the EkoSonic catheter. PCI was used to map and quantify stable and inertial cavitation as a function of Definity concentration in a flow phantom mimicking the porcine femoral artery. The 2.0 mL/min infusion rate yielded the highest surviving Definity concentration and acoustic attenuation. Cavitation was sustained throughout each 15 ms ultrasound pulse, as well as throughout the 3 min infusion. These results demonstrate a potential pathway to use cavitation nucleation to promote drug delivery with the EkoSonic endovascular system. 相似文献
63.
64.
65.
Hugo Figueiredo‐Ferraz Pedro R. Gil‐Monte Ester Grau‐Alberola Marta Llorca‐Pellicer Juan A. García‐Juesas 《Journal of Applied Research in Intellectual Disabilities》2012,25(5):455-463
Background The problem of mobbing has attracted a great deal of attention over the past few years. This concern has increased the study of the phenomena, which has resulted in many scientific publications. Mobbing has been characterized as an emerging risk at work. The aim of this study was to analyse the influence of some psychosocial factors at work – role clarity, interpersonal conflicts and social support – on mobbing and its consequences – that is, inclination towards absenteeism and psychosomatic disorders. Materials and methods The sample included 422 employees working with people with intellectual disabilities. Structural equation modelling (SEM) was used to test the hypotheses. Results The Hypothesized model showed an adequate fit to data, and all hypothesized relationships were significant. Conclusions The results of this study provide support for the mediator role of mobbing in the relationship between high role ambiguity, low social support and high interpersonal conflicts and psychosomatic disorders and inclination towards absenteeism. 相似文献
66.
This study was aimed to explore the distinct pathways that lead to depression and paranoia. We first examined the association of dysfunctional parenting experiences and negative self-evaluations in depression and paranoia. Furthermore, we also examined whether different self-evaluative beliefs could mediate the relationships between dysfunctional parenting experiences (i.e. parental overprotection or lack of care) and the development of depression and paranoia. A sample composed of 55 paranoid patients, 38 depressed patients and 44 healthy controls completed the Parental Bonding Instrument (PBI), the Evaluative Beliefs Scale (EBS) and some clinical scales. Our analyses revealed that lack of parental care and negative self–self evaluations were associated with depression symptoms. Analyses also revealed that parental overprotection and negative other–self evaluations were associated with paranoid symptoms. Furthermore, negative self–self and other–self evaluations fully mediated the relationship of parental overprotection and paranoia, whereas negative self–self evaluations partially mediated the relationship between lack of parental care and depression. These findings suggest that distinct patterns of parental practices may contribute to the development of different dysfunctional schemas which in turn may lead to either depression or paranoia. 相似文献
67.
68.
Impact of anthropometric features on the applicability and accuracy of FibroScan® (M and XL) in overweight/obese patients 下载免费PDF全文
69.
70.