全文获取类型
收费全文 | 1290427篇 |
免费 | 94785篇 |
国内免费 | 2005篇 |
专业分类
耳鼻咽喉 | 18316篇 |
儿科学 | 42672篇 |
妇产科学 | 38226篇 |
基础医学 | 189000篇 |
口腔科学 | 35852篇 |
临床医学 | 109885篇 |
内科学 | 253927篇 |
皮肤病学 | 26842篇 |
神经病学 | 100601篇 |
特种医学 | 50631篇 |
外国民族医学 | 366篇 |
外科学 | 199459篇 |
综合类 | 26893篇 |
现状与发展 | 1篇 |
一般理论 | 317篇 |
预防医学 | 94285篇 |
眼科学 | 29256篇 |
药学 | 98635篇 |
2篇 | |
中国医学 | 2509篇 |
肿瘤学 | 69542篇 |
出版年
2018年 | 12118篇 |
2015年 | 11847篇 |
2014年 | 16350篇 |
2013年 | 24882篇 |
2012年 | 34265篇 |
2011年 | 36670篇 |
2010年 | 21654篇 |
2009年 | 20406篇 |
2008年 | 35599篇 |
2007年 | 38580篇 |
2006年 | 39104篇 |
2005年 | 38394篇 |
2004年 | 36983篇 |
2003年 | 35943篇 |
2002年 | 35481篇 |
2001年 | 58535篇 |
2000年 | 60072篇 |
1999年 | 51090篇 |
1998年 | 14419篇 |
1997年 | 12958篇 |
1996年 | 13254篇 |
1995年 | 12486篇 |
1994年 | 11882篇 |
1993年 | 10986篇 |
1992年 | 41305篇 |
1991年 | 40642篇 |
1990年 | 40186篇 |
1989年 | 38966篇 |
1988年 | 36347篇 |
1987年 | 35606篇 |
1986年 | 33926篇 |
1985年 | 32365篇 |
1984年 | 24159篇 |
1983年 | 21006篇 |
1982年 | 12491篇 |
1981年 | 11013篇 |
1980年 | 10310篇 |
1979年 | 22785篇 |
1978年 | 15990篇 |
1977年 | 13811篇 |
1976年 | 13067篇 |
1975年 | 14317篇 |
1974年 | 16803篇 |
1973年 | 16195篇 |
1972年 | 15443篇 |
1971年 | 14318篇 |
1970年 | 13299篇 |
1969年 | 12794篇 |
1968年 | 12060篇 |
1967年 | 10549篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
102.
Growth Hormone Induces Recurrence of Infantile Hemangiomas After Apparent Involution: Evidence of Growth Hormone Receptors in Infantile Hemangioma 下载免费PDF全文
Naikhoba C. O. Munabi B.A. Qian Kun Tan H.S. Maria C. Garzon M.D. Gerald G. Behr M.D. Carrie J. Shawber Ph.D. June K. Wu M.D. 《Pediatric dermatology》2015,32(4):539-543
Infantile hemangiomas (IHs) are the most common benign tumor of infancy, characterized by a natural history of early proliferation in the first months of life to eventual involution during childhood, often with residual fibrofatty tissue. Once involution has been achieved, IHs do not typically recur. We present two cases of exogenous growth hormone therapy resulting in the recurrence of IHs in late childhood, supported by radiological, immunohistochemical, in vitro, and in vivo evidence. 相似文献
103.
104.
105.
106.
I. Fouzas C. Papanikolaou G. Katsanos N. Antoniadis N. Salveridis K. Karakasi S. Vasileiadou A. Fouza E. Mouloudi G. Imvrios V. Papanikolaou 《Transplantation proceedings》2019,51(2):416-420
Aims
Variations of the anatomy of donor hepatic arteries increase the number of arterial anastomoses during liver transplantation and, possibly, the incidence of hepatic artery thrombosis (HAT). In this study, we describe the arterial anatomic variations in liver grafts procured and transplanted by a single center in Greece, the techniques of arterial anastomosis, and their effect on the incidence of early HAT.Materials and Methods
From January 2013 to December 2017, the arterial anatomy of 116 grafts procured for liver transplantation were recorded, as well as the technique of arterial anastomosis and the incidence of early hepatic artery thrombosis (HAT <30 days).Results
A single hepatic artery was recorded in 72.41% of the procured grafts, an aberrant left hepatic artery (accessory or replaced) in 18 grafts (15.52%), and an aberrant right hepatic artery (accessory or replaced) in 17 grafts (14.66%), while other variations were observed in less than 1% of the procured livers. Of the 116 primary liver transplantations, 6 patients (5.17%) developed early HAT <30 days. Two of these patients (1.72%) had 1 anastomosis of the hepatic artery and 4 (3.45%) had 2 anastomoses due to anatomic variations.Conclusions
Anatomic variations of the hepatic artery in liver grafts is a common finding and increase the incidence of early HAT but not to a degree to make these grafts unusable. 相似文献107.
A. Guerrero Gómez N. González Jaramillo J.A. Castro Pérez 《Revista espa?ola de anestesiología y reanimación》2019,66(1):10-17
Introduction
The fast track / ultra-fast-track protocols are techniques used to optimise the patient care process and a quick recovery after cardiac surgery. They are one of the mainstays of efficient practice. With their use, the length of hospital and intensive care unit (ICU) stays are reduced, with a direct impact on costs and the quality of the health service.Objective
To compare the length of stay in the ICU, length of hospital stay, and post-operative mortality in ultra-fast-track extubated (uFTE) patients and those with conventional extubation (CE) after cardiac surgery.Methods
Longitudinal, analytical, retrospective study was conducted, with the period between the time of surgery and discharge being included as the study period.Results
A total of 396 patients older than 18 years who required cardiac surgery were included, of whom 207 patients had (uFTE) and 189 had CE. Although the groups were not comparable due to the statistical differences found, when performing the multivariate adjustment, uFTE maintained its statistical independence and was associated with lower cardiovascular morbidity, such as myocardial ischaemia (95% CI: 0.37-0.86; P = .01) and lower post-surgical vasopressor requirement (95% CI: 0.18-0.49; P < .01). No significant differences were found in the length of hospital stay, ICU stay, or post-operative mortality in the ICU.Conclusion
Implementing the uFTE strategy, decreases cardiovascular morbidity and vasopressor requirement. The change to uFTE should be accompanied by changes in models and practices in patient recovery to standardised protocols. This study shows that uFTE did not reduce the length of ICU stay, hospital stay, or mortality. 相似文献108.
109.
110.
Jennifer J. Schoch Reesa L. Monir Kerrie G. Satcher Jessica Harris Eric Triplett Josef Neu 《Pediatric dermatology》2019,36(5):574-580
Recent focus on the neonatal intestinal microbiome has advanced our knowledge of the complex interplay between the intestinal barrier, the developing immune system, and commensal and pathogenic organisms. Despite the parallel role of the infant skin in serving as both a barrier and an interface for priming the immune system, large gaps exist in our understanding of the infantile cutaneous microbiome. The skin microbiome changes and matures throughout infancy, becoming more diverse and developing the site specificity known to exist in adults. Delivery method initially determines the composition of the cutaneous microbiome, though this impact appears transient. Cutaneous microbes play a critical role in immune system development, particularly during the neonatal period, and microbes and immune cells have closely intertwined, reciprocal effects. The unique structure of newborn skin influences cutaneous microbial colonization and the development of dermatologic pathology. The development of the infantile skin barrier and cutaneous microbiome contributes to future skin pathology. Atopic dermatitis flares and seborrheic dermatitis have been linked to dysbiosis, while erythema toxicum neonatorum is an immune response to the establishment of normal bacterial skin flora. Physicians who care for infants should be aware of the impact of the infantile skin microbiome and its role in the development of pathology. A better understanding of the origin and evolution of the skin microbiome will lead to more effective prevention and treatment of pediatric skin disease. 相似文献