We study conformally invariant boundary conditions that break part of the bulk symmetries. A general theory is developped for those boundary conditions for which the preserved subalgebra is the fixed algebra under an abelian orbifold group. We explicitly construct the boundary states and reflection coefficients as well as the annulus amplitudes. Integrality of the annulus coefficients is proven...

Background/Introduction Tricuspid regurgitation is a serious valvulopathy with a significant impact on long term survival. Several techniques have been described to address it, including suture techniques and ring techniques. All have the same purposes of favoring leaflet cooptation, reducing the size of the tricuspid annulus and stabilize the reparation to preclude further re expansion and dil...

We show that the difference between Green energy of a discrete signed measure relative to circular annulus concentrated at some points on concentric circles and symmetric is non-decreasing during expansion annulus. As corollary, generalizations classical Pólya-Schur inequality for complex numbers are obtained. Some open problems formulated.

INTRODUCTION Lumbar hernias occur mostly in the posterolateral region of IVDs and mechanical loading is an important risk factor. Studies show that dynamic and static overloading affect the nucleus and annulus of the IVD differently. We hypothesize there is also variance in the effect of overloading on the IVD's anterior, lateral and posterior annulus, which could explain the predilection of he...

BACKGROUND We investigated the size and growth potential of the neoaortic root and aortic anastomosis after the arterial switch operation (ASO) for D-transposition of the great arteries (D-TGA) performed in infants. Circumferential suture lines connecting the great arteries and extensive surgery on the arterial roots to transplant the coronary arteries are essential parts of the ASO. However, l...

We consider the narrow escape problem in two-dimensional Riemannian manifolds (with a metric g) with corners and cusps, in an annulus, and on a sphere. Specifically, we calculate the mean time it takes a Brownian particle diffusing in a domain to reach an absorbing window when the ratio ε = |∂ a |g |∂ |g between the absorbing window and the otherwise reflecting boundary is small. If the boundar...

OBJECTIVE To study the time course and underlying mechanisms of right heart filling after cardiac surgery. DESIGN A prospective observational study of adult patients undergoing cardiac surgery. SETTING Echocardiography laboratory of the Stanford University Medical Center. PATIENTS Twenty six patients (mean age 54.9) undergoing cardiac surgery were studied before and two days, one week, si...

Masses or mass-like lesions located in proximity to mitral valve encompass a wide range of differential diagnoses including neoplasias, abscesses, thrombi, and rarely caseous calcification of mitral annulus. Due to asymptomatic presentation, its diagnosis is usually incidental. Echocardiography is the first choice of imaging in evaluation. Cardiac computed tomography (CT) is helpful in establis...

Background. Little anatomic information is available on the annular myocardium. This study was conducted to determine the anatomic substrate for atrial flutter due to circus movement around the tricuspid annulus in the Y-shaped incision canine model of atrial flutter. Methods and Results. We studied photographs of the annular myocardium serial histological sections, made in either of three diff...

In this paper, we introduce the annular instanton Floer homology which is defined for links in a thickened annulus. It an analogue of Khovanov homology. A spectral sequence whose second page and converges to constructed. As application sequence, prove that detects unlink annulus (assuming all components are null-homologous). Another new proof Grigsby Ni's result tangle distinguishes braids from...