全文获取类型
收费全文 | 766篇 |
免费 | 43篇 |
国内免费 | 14篇 |
专业分类
耳鼻咽喉 | 10篇 |
儿科学 | 56篇 |
妇产科学 | 12篇 |
基础医学 | 69篇 |
口腔科学 | 28篇 |
临床医学 | 50篇 |
内科学 | 177篇 |
皮肤病学 | 8篇 |
神经病学 | 26篇 |
特种医学 | 140篇 |
外科学 | 139篇 |
综合类 | 11篇 |
预防医学 | 17篇 |
眼科学 | 7篇 |
药学 | 35篇 |
中国医学 | 4篇 |
肿瘤学 | 34篇 |
出版年
2021年 | 8篇 |
2020年 | 7篇 |
2019年 | 14篇 |
2018年 | 13篇 |
2017年 | 6篇 |
2016年 | 9篇 |
2015年 | 16篇 |
2014年 | 20篇 |
2013年 | 23篇 |
2012年 | 18篇 |
2011年 | 32篇 |
2010年 | 24篇 |
2009年 | 32篇 |
2008年 | 22篇 |
2007年 | 22篇 |
2006年 | 25篇 |
2005年 | 19篇 |
2004年 | 11篇 |
2003年 | 14篇 |
2002年 | 12篇 |
2001年 | 16篇 |
2000年 | 13篇 |
1999年 | 20篇 |
1998年 | 23篇 |
1997年 | 26篇 |
1996年 | 26篇 |
1995年 | 13篇 |
1994年 | 19篇 |
1993年 | 11篇 |
1992年 | 15篇 |
1991年 | 15篇 |
1990年 | 9篇 |
1989年 | 24篇 |
1988年 | 32篇 |
1987年 | 29篇 |
1986年 | 18篇 |
1985年 | 22篇 |
1984年 | 15篇 |
1983年 | 19篇 |
1982年 | 22篇 |
1981年 | 17篇 |
1980年 | 10篇 |
1979年 | 4篇 |
1978年 | 9篇 |
1977年 | 12篇 |
1976年 | 7篇 |
1975年 | 4篇 |
1971年 | 5篇 |
1968年 | 3篇 |
1966年 | 5篇 |
排序方式: 共有823条查询结果,搜索用时 0 毫秒
101.
102.
Femoral artery compression device for outpatient angiography 总被引:1,自引:0,他引:1
To avoid late bleeding from the femoral artery puncture site after outpatient femoral angiography, a compression device was designed to exert continuous pressure over the groin, even when the patient is upright. It has been successfully used in more than 2,000 arterial catheter procedures. The device can also help prevent bleeding in patients who are at increased risk because of hypertension or anticoagulant therapy. 相似文献
103.
Pseudoaneurysms complicating organ transplantation: roles of CT, duplex sonography, and angiography 总被引:2,自引:0,他引:2
Tobben PJ; Zajko AB; Sumkin JH; Bowen A; Fuhrman CR; Skolnick ML; Bron KM; Esquivel CO; Starzl TE 《Radiology》1988,169(1):65-70
In a retrospective study of proved pseudoaneurysms (PAs) in 15 patients with transplanted organs (11 liver, three kidney, one pancreas), the results of computed tomography (CT), duplex sonography, and angiography were reviewed. Of the 15 cases of PA, eight occurred at the arterial anastomosis and seven were nonanastomotic. Three of the eight anastomotic PAs were caused by infection. Of the seven nonanastomotic PAs, four were caused by percutaneous biopsy, two were caused by infection, and one was of undetermined cause. In nine (60%) of the 15 patients the PAs were incidentally detected at imaging studies performed for other reasons. Diagnosis requires a high degree of suspicion. CT was performed in nine cases and duplex sonography in ten. The diagnosis of PA was made with CT in six (67%) patients and with duplex sonography in five (50%). CT and duplex sonography could not enable diagnosis when the PA was small, when the arterial anastomosis was not included in the field of study, or when enhancement with intravenously administered contract material was suboptimal. Angiography depicted the PAs in all 15 patients. In three liver transplant recipients with gastrointestinal tract bleeding, the causative PAs were detected only with angiography. 相似文献
104.
105.
C O Esquivel C G Bj?rck D Bergqvist S E Bergentz 《European surgical research. Europ?ische chirurgische Forschung. Recherches chirurgicales européennes》1983,15(6):289-296
Tanned human umbilical vein grafts (Dardik Biograft, Meadox) were heparinized with tritium-labelled heparin. Two methods of heparinization were undertaken: (1) incubation with heparin followed by ethyl alcohol 50% treatment, and (2) incubation with heparin without alcohol. Grafts were placed in the carotid arteries of sheep and removed 10 and 90 days later. Heparin was lost in contact with blood but the alcohol treatment delayed heparin desorption significantly. 相似文献
106.
107.
108.
109.
110.