in this paper, we study some ring theoretic properties of the amalgamated duplication ring $rbowtie i$ of a commutative noetherian ring $r$ along an ideal $i$ of $r$ which was introduced by d'anna and fontana. indeed, it is determined that when $rbowtie i$ satisfies serre's conditions $(r_n)$ and $(s_n)$, and when is a normal ring, a generalized cohen-macaulay ring and finally a filter ring.

Table 1 Reported cases of well functioning mechanical valve without anticoagulation Reference Mean age n Type of Position Mean follow-up Treatment with Peak (years) valve (n) of valve period without anticoagulation gradient anticoagulation (months) across (years) valve thrombotic prophylaxis are from non-randomized case series without controls w2x. Uncomplicated functioning without anticoagulat...

introduction aortic surgery has made much progress recently. yet the combination of aortic surgery and coronary artery bypass grafting has remained a major issue for the surgeons. patient and observation herein, we present a case of severe aortic insufficiency with aortic aneurysm concomitant with single coronary artery disease on the right coronary artery. the patient underwent bentall procedu...

transcatheter aortic valve replacement (tavr) is a novel therapeutic intervention for the replacement of severely stenotic aortic valves in high-risk patients for standard surgical procedures. since the initial partner trial results, use of tavr has been on the rise each year. new delivery methods and different valves have been developed and modified in order to promote the minimally invasive p...

in this paper, we introduce a class of $j$-quasipolar rings. let $r$ be a ring with identity. an element $a$ of a ring $r$ is called {it weakly $j$-quasipolar} if there exists $p^2 = pin comm^2(a)$ such that $a + p$ or $a-p$ are contained in $j(r)$ and the ring $r$ is called {it weakly $j$-quasipolar} if every element of $r$ is weakly $j$-quasipolar. we give many characterizations and investiga...

OBJECTIVE There are debates regarding the optimal approach for AAAD involving the aortic root. We described a modified reinforced aortic root reconstruction approach for treating AAAD involving the aortic root. METHODS A total of 161 patients with AAAD involving the aortic root were treated by our modified reinforced aortic root reconstruction approach from January 1998 to December 2008. Key ...

Between 1972 and 1978, 31 patients underwent replacement of the ascending aorta, with or without aortic valve surgery, at the Wessex Regional Cardiac Centre. The commonest indications for operation were aneurysmal dilatation of the ascending aorta causing aortic regurgitation and acute dissection of the ascending aorta. Eleven of the 31 patients had features of Marfan's syndrome. The overall ho...

objective(s) four novel losartan analogues 5a-d were synthesized by connecting a dihydropyridine nucleus to imidazole ring. the effects of 5a and 5b on angiotensin receptors (at') and l-type calcium channels were investigated on isolated rat aorta. materials and methods aortic rings were pre-contracted with 1 pm angiotensin ii or 80 mm kcl and relaxant effects of losartan, nifedipine, 5a a...

To cite: Sharma A, Malhi AS, Kumar S, et al. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/ bcr-2016-216265 DESCRIPTION A 3-month-old girl child presented with a history of respiratory distress, rapid breathing and mild cyanosis since birth. Auscultation revealed systolic murmur (3/6) in the right parasternal and upper left parasternal area. ECG showed right axis de...