全文获取类型
收费全文 | 243篇 |
免费 | 31篇 |
国内免费 | 2篇 |
专业分类
耳鼻咽喉 | 2篇 |
儿科学 | 7篇 |
妇产科学 | 4篇 |
基础医学 | 24篇 |
口腔科学 | 9篇 |
临床医学 | 22篇 |
内科学 | 54篇 |
皮肤病学 | 7篇 |
神经病学 | 17篇 |
特种医学 | 5篇 |
外科学 | 35篇 |
预防医学 | 9篇 |
眼科学 | 27篇 |
药学 | 29篇 |
中国医学 | 1篇 |
肿瘤学 | 24篇 |
出版年
2023年 | 10篇 |
2022年 | 15篇 |
2021年 | 22篇 |
2020年 | 15篇 |
2019年 | 15篇 |
2018年 | 14篇 |
2017年 | 17篇 |
2016年 | 11篇 |
2015年 | 19篇 |
2014年 | 16篇 |
2013年 | 12篇 |
2012年 | 24篇 |
2011年 | 16篇 |
2010年 | 16篇 |
2009年 | 5篇 |
2008年 | 12篇 |
2007年 | 6篇 |
2006年 | 10篇 |
2005年 | 5篇 |
2004年 | 2篇 |
2003年 | 4篇 |
2002年 | 1篇 |
2001年 | 1篇 |
1996年 | 1篇 |
1995年 | 2篇 |
1992年 | 2篇 |
1991年 | 1篇 |
1989年 | 1篇 |
1982年 | 1篇 |
排序方式: 共有276条查询结果,搜索用时 109 毫秒
1.
A number of masses and pseudomasses may be encountered during the echocardiographic examination of the transverse and oblique sinuses with significant clinical implications. This review discusses the clinically relevant anatomy of the pericardial sinuses emphasizing diagnostic pitfalls that may be encountered during their echocardiographic examination. 相似文献
2.
3.
4.
Chetan Anand Akmal Pasha M. D. Swetha Putte Gowda B. E. Amitha Rani N. G. K. Karanth 《Food and Agricultural Immunology》2007,18(1):39-51
A polyclonal antibody-based enzyme-linked immunosorbent assay (ELISA) method was developed for the N-methylcarbamate insecticide bendiocarb (2,2-dimethyl-1,3-benzodioxol-4-yl methylcarbamate). Two novel haptens having dimethylbenzodioxyl and dimethylbenzofuranyl groups connected to oxyacetyl-γ-aminobutanoic acid and oxyacetyl-β-alanine spacer arm respectively were synthesised. The first hapten was conjugated to carrier proteins to make antigens that were used to raise polyclonal antibodies in rabbits. The antibodies specifically recognised bendiocarb and its metabolite 2,2-dimethyl-1,3-benzodiox-4-ol with an IC50 value of 9 ppb (ng ml-1). The assay was standardised using the competitive ELISA format at 0.0625 µg antibody concentration and at 1/10k pesticide-HRP dilution. Matrix effect studies were carried out in four vegetable and cereal food samples. Matrix effect elimination in cabbage, cauliflower and rice was achieved by simple dilution of the extract. Five different approaches were attempted to achieve matrix clean up in paddy rice. C-18 column and gel permeation column chromatography (GPC) helped in the matrix removal. The spike and recovery studies for all the four food samples gave a recovery in the range of 75-95%, thus indicating the efficiency of the matrix elimination procedures developed. 相似文献
5.
Two‐ and three‐dimensional transthoracic echocardiographic assessment of superior vena cava,crista terminalis,and right atrial appendage using the right parasternal approach 下载免费PDF全文
6.
7.
Incremental benefit of three‐dimensional transthoracic echocardiography in the assessment of left atrial appendage aneurysm leading to severe extrinsic compression of a coronary artery 下载免费PDF全文
Rohit Tandon MD Mohammed J. Arisha MD Navin C. Nanda MD Sooraj Kumar MD Gurpreet S. Wander MD Swetha Srialluri MD Hassan Kamel MD Ahmed Y. Salama MBChB 《Echocardiography (Mount Kisco, N.Y.)》2018,35(5):685-691
Left atrial appendage aneurysm (LAA AN) is a rare disease entity, which can be congenital or acquired in nature. We report an adult patient with LAA AN presenting with anginal chest pain in whom live/real time three‐dimensional transthoracic echocardiography (3DTTE) provided incremental value over the two‐dimensional (2D) technique in providing a more comprehensive assessment of the lesion. A literature review of the salient features of LAA AN is also provided in a tabular form. 相似文献
8.
9.
Deepa John Swetha Sara Philip Rashmi Mittal Sheeja Susan John Padma Paul 《Indian journal of ophthalmology》2015,63(11):843-846