Perpendicular hot electron spin-valve effect in a new vacuum bonded magnetic field sensor and spectroscopic measurement tool Douwe Monsma This thesis may be ordered via the homepage of the Information Storage Technology Group Cover: first electrical measurement result of a spin-valve transistor. The collector current is measured as a function of time. An HP4145B is used for measurement and an F...

BACKGROUND Myxomatous degeneration of the mitral valve is a common pathological finding in mitral valve surgery and the most common reason for severe mitral valve regurgitation. Considering the importance of right ventricular remodeling and global function after mitral valve surgery we tried to elucidate a possible association of myxomatous mitral valve and impairment of right atrial and ventri...

OBJECTIVES This study sought to determine the impact of quantity and location of aortic valve calcification (AVC) on paravalvular regurgitation (PVR) and rates of post-dilation (PD) immediately after transcatheter aortic valve replacement (TAVR). BACKGROUND The impact of AVC in different locations within the aortic valve complex is incompletely understood. METHODS This study analyzed 150 pa...

We recently shown, using tight-binding calculations, that nonequilibrium valley polarization can be realized in graphene, when the current is injected through ”valley filter”: a ballistic point contact with zigzag edges. Here we demonstrate, that the effect is surprisingly robust against changing the crystallographic orientation of the filter axis. Namely, the output current remains polarized u...

Introduction:- The coronary sinus is a collection of veins, joined together to form large vessel that collects blood from the heart muscle (myocardium) 1. Most cardiac veins drain into wide sinus, 2 or 3 cm long, lying in posterior atrioventricular groove between left atrium and ventricle.2 opens right opening inferior vena cava orifice. An endocardial fold may guard entrance valve Thebesian Va...

In this paper, we propose a new method of optically implementing digital logic gates capable of performing all logic operations and give the technique for construction of an array of n-bit parallel adders as a typical application circuit. These gates are implemented using a Hughes liquid crystal light valve operated in the parallel off-state configuration. It is found that all possible function...

Valvular heart disease (VHD) in pregnant women, whether due to congenital or acquired aetiologies, poses a challenge to clinicians and their patients. Significant valve disease, which can affect a single valve or several valves, increases the risk of pregnancy to the mother and foetus and requires a careful preconception risk assessment and, subsequently during pregnancy, specialized care to mi...

Mitral valve prolapse is a relatively common condition in the general population. The syndrome appears more common in females, and is often associated with a family history. Patients may be asymptomatic or may present with a variety of symptoms ranging from mild chest aches and anxiety to severe angina-like chest pain, palpitations and dizziness. The common auscultatory features include mid-sys...