全文获取类型
收费全文 | 1086篇 |
免费 | 43篇 |
国内免费 | 2篇 |
专业分类
耳鼻咽喉 | 8篇 |
儿科学 | 42篇 |
妇产科学 | 14篇 |
基础医学 | 132篇 |
口腔科学 | 17篇 |
临床医学 | 95篇 |
内科学 | 231篇 |
皮肤病学 | 26篇 |
神经病学 | 86篇 |
特种医学 | 25篇 |
外科学 | 235篇 |
综合类 | 9篇 |
预防医学 | 77篇 |
眼科学 | 10篇 |
药学 | 83篇 |
中国医学 | 1篇 |
肿瘤学 | 40篇 |
出版年
2023年 | 7篇 |
2022年 | 16篇 |
2021年 | 25篇 |
2020年 | 15篇 |
2019年 | 25篇 |
2018年 | 33篇 |
2017年 | 24篇 |
2016年 | 30篇 |
2015年 | 21篇 |
2014年 | 26篇 |
2013年 | 30篇 |
2012年 | 74篇 |
2011年 | 65篇 |
2010年 | 42篇 |
2009年 | 33篇 |
2008年 | 34篇 |
2007年 | 44篇 |
2006年 | 46篇 |
2005年 | 33篇 |
2004年 | 33篇 |
2003年 | 42篇 |
2002年 | 54篇 |
2001年 | 36篇 |
2000年 | 45篇 |
1999年 | 37篇 |
1998年 | 16篇 |
1997年 | 12篇 |
1996年 | 6篇 |
1995年 | 6篇 |
1994年 | 8篇 |
1993年 | 11篇 |
1992年 | 23篇 |
1991年 | 20篇 |
1990年 | 20篇 |
1989年 | 22篇 |
1988年 | 16篇 |
1987年 | 16篇 |
1986年 | 11篇 |
1985年 | 17篇 |
1984年 | 5篇 |
1982年 | 5篇 |
1981年 | 3篇 |
1980年 | 4篇 |
1979年 | 6篇 |
1978年 | 7篇 |
1977年 | 3篇 |
1976年 | 7篇 |
1975年 | 3篇 |
1974年 | 3篇 |
1969年 | 2篇 |
排序方式: 共有1131条查询结果,搜索用时 0 毫秒
1.
2.
3.
4.
Reaming versus non-reaming in medullary nailing: Interference with cortical circulation of the canine tibia 总被引:13,自引:2,他引:11
M. P. M. Klein B. A. Rahn R. Frigg S. Kessler S. M. Perren 《Archives of orthopaedic and trauma surgery》1990,109(6):314-316
Summary Medullary nails have only been used with reluctance in the treatment of open fractures since reaming interferes with the cortical circulation. The technique of interlocking offers the interesting possibility of inserting a relatively stiff nail which does not necessarily require reaming. The effects of reaming prior to nail insertion upon the cortical circulation was investigated in the canine tibia. Intravital staining with procion red was used to trace areas of disturbed circulation. Nail insertion without reaming provided clear advantages for the bone's blood supply, while reaming disturbed perfusion in two-thirds of the cortical area and regionally extended through the entire thickness of the cortex. The disturbance without reaming was limited to the inner layer of the cortex and involved only one-third of the cortical cross-section. 相似文献
5.
6.
7.
8.
Intracerebral bilateral symmetrical calcifications, demonstrated in a patient with pseudohypoparathyroidism 总被引:1,自引:0,他引:1
Bilateral Symmetrical Calcifications (B.S.C.) in cerebro represent calcium deposits usually found in the basal ganglia and/or dentate nucleus. They can be the result of diverse disorders, but can also present themselves without any underlying disease. Most often they are asymptomatic, but if the calcifications are extensive, extrapyramidal and cerebellar signs may arise. The following case concerns a patient with pseudohypoparathyroidism. Besides the usual signs and symptoms found in this disease, the patient also showed extensive B.S.C. The etiology and clinical symptoms of B.S.C. will be discussed. Furthermore, attention will be given to the syndrome of the pseudohypoparathyroidism and the effects of hypocalcemia. 相似文献
9.
Carlos Calderón Rafael Rotaeche Arritxu Etxebarria Mercé Marzo Rosa Rico Marta Barandiaran 《BMC health services research》2006,6(1):138-11
Background
The GRADE method represents a new approach to grading the quality of evidence and strength of recommendations in the preparation of Clinical Practice Guidelines (CPG). In the context of a pilot study to assess the implementability of the system in Spain, we considered it relevant to gain an insight into the significance of the perceptions and attitudes expressed by the actual experts participating in the system try-out. 相似文献10.
A surgical procedure in which a tendon graft is used to reconstruct the hood of the proximal interphalangeal joint for the correction of the postburn boutonnière deformity is described. The intent is to use the potential of the lateral bands for simultaneous extension of the interphalangeal joints, avoiding their excessive palmar displacement. The technique has been employed in 22 fingers with satisfactory results, except in the small finger. 相似文献