全文获取类型
收费全文 | 1485篇 |
免费 | 124篇 |
国内免费 | 34篇 |
专业分类
耳鼻咽喉 | 4篇 |
儿科学 | 40篇 |
妇产科学 | 17篇 |
基础医学 | 155篇 |
口腔科学 | 15篇 |
临床医学 | 113篇 |
内科学 | 461篇 |
皮肤病学 | 13篇 |
神经病学 | 36篇 |
特种医学 | 209篇 |
外科学 | 305篇 |
综合类 | 34篇 |
预防医学 | 74篇 |
眼科学 | 22篇 |
药学 | 68篇 |
中国医学 | 1篇 |
肿瘤学 | 76篇 |
出版年
2022年 | 7篇 |
2021年 | 13篇 |
2020年 | 9篇 |
2019年 | 11篇 |
2018年 | 26篇 |
2017年 | 18篇 |
2016年 | 21篇 |
2015年 | 26篇 |
2014年 | 29篇 |
2013年 | 42篇 |
2012年 | 58篇 |
2011年 | 63篇 |
2010年 | 55篇 |
2009年 | 59篇 |
2008年 | 72篇 |
2007年 | 72篇 |
2006年 | 69篇 |
2005年 | 62篇 |
2004年 | 53篇 |
2003年 | 58篇 |
2002年 | 65篇 |
2001年 | 74篇 |
2000年 | 44篇 |
1999年 | 51篇 |
1998年 | 43篇 |
1997年 | 41篇 |
1996年 | 29篇 |
1995年 | 19篇 |
1994年 | 17篇 |
1993年 | 18篇 |
1992年 | 48篇 |
1991年 | 40篇 |
1990年 | 43篇 |
1989年 | 40篇 |
1988年 | 44篇 |
1987年 | 21篇 |
1986年 | 19篇 |
1985年 | 17篇 |
1983年 | 11篇 |
1982年 | 10篇 |
1981年 | 10篇 |
1979年 | 14篇 |
1978年 | 6篇 |
1977年 | 6篇 |
1976年 | 7篇 |
1975年 | 9篇 |
1974年 | 8篇 |
1973年 | 9篇 |
1972年 | 10篇 |
1969年 | 13篇 |
排序方式: 共有1643条查询结果,搜索用时 15 毫秒
31.
32.
H Thabet N Brahmi M Amamou N Ben Salah A Hédhili M Yacoub 《Veterinary and human toxicology》1999,41(5):320-321
Datura stramonium is a hallucinogenic plant which causes serious poisoning. Clinical symptoms are those of atropinic intoxication with psychiatric manifestations of dryness of mouth, mydriasis, tachycardia and hallucinations. Diagnosis is essentially clinical. Treatment is symptomatic and suppurative; prognosis is usually favorable. 相似文献
33.
34.
35.
BACKGROUND: To clarify the precise anatomical relationship of the muscular subpulmonary infundibulum. METHODS: Eleven hearts were dissected, and microscopic sections taken through the arterial trunks of a 37-week-old fetus and of a neonate. The anatomy was also investigated during operative Ross procedures. RESULTS: The sinotubular junctions of the pulmonary and aortic roots cross obliquely. The leaflets of the pulmonary valve are lifted away from the ventricular septum by the free-standing subpulmonary infundibulum, whereas the aortic valve is deeply wedged between the atrioventricular junctions. The muscular infundibulum spirals around the aortic root, being longest below the right-facing aortic sinus and shortest below the left. The first septal perforating artery pierces the septum below the shortest part of the infundibulum, sometimes within a millimeter of the pulmonary valvar hinge, but a muscular sleeve lifts the pulmonary leaflets from the septal musculature. CONCLUSIONS: The pulmonary valvar leaflets are supported entirely by free-standing musculature, having no direct relationship with the ventricular septum. This makes possible the Ross procedure. 相似文献
36.
A novel method to measure mitral valve area in patients with rheumatic mitral stenosis using three‐dimensional transesophageal echocardiography: Feasibility and validation
下载免费PDF全文
![点击此处可从《Echocardiography (Mount Kisco, N.Y.)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
37.
38.
Three‐dimensional transesophageal echocardiography incremental value in a rare case of a bileaflet tricuspid valve
下载免费PDF全文
![点击此处可从《Echocardiography (Mount Kisco, N.Y.)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Hani M. Mahmoud M.B.B.Ch M.Sc. F.A.S.E. Hossam Walley M.D. Hatem Hosny M.Sc. Magdi Yacoub F.R.C.S. F.R.S. 《Echocardiography (Mount Kisco, N.Y.)》2016,33(9):1438-1440
Detailed assessment of the tricuspid valve using two‐dimensional echocardiography is always challenging, as only two of three leaflets can be seen at a time. Three‐dimensional echocardiography can provide the enface view of the tricuspid valve that allows simultaneous visualization of all of the three leaflets. In a 42‐year‐old male patient scheduled for pulmonary endarterectomy, 3DTEE showed that the tricuspid valve is bileaflet, with one septal and another lateral leaflet. There were two commissures, one of them is anteriorly positioned and the other one is posterior. Our findings were confirmed intra‐operatively by direct surgical visualization of the tricuspid valve. 相似文献
39.
40.