We present a tool for tracking coronary vessels in MRI scans of the human heart to aid in the screening of heart diseases. The vessels are identified through a single click inside each vessel present in a standard orthogonal view. The vessel identification results from a series of computational steps including eigenvalue analysis of the Hessian of the MRI image followed by a level set-based ext...

Nevertheless, in order to respond to the economic and environmental criteria, hydrogen production and storage have to be improved. This work focuses on gaseous storage under high pressure (700 bar) using a type III vessel (figure 1) that is to say composed of a metal liner – which prevents gas diffusion – and of a composite laminate wrapped by filament winding – which is used as a mechanical st...

OBJECTIVES This study sought to investigate the influence of vessel size on the outcomes of patients after drug-eluting stent (DES) implantation. BACKGROUND There are no dedicated studies on the influence of vessel size on the outcomes of patients treated with different DES. METHODS The study population was composed of 2,058 consecutive patients who received sirolimus-eluting stents (SES) o...

Currently many aerospace vehicle systems require lightweight, high performance pressurized tank for storage of propellant, nitrogen, oxygen, or other medium. Aircrafts have several needs for high-pressure stored gas, like aircraft escape slide inflation systems, emergency oxygen supply, landing gear actuator, engine pressurized air start system and on-board inert gas generating system nitrogen ...

In this section we consider composite systems made up of several particles, each carrying orbital angular momentum decribed by spherical harmonics Y`m(θ, φ) as eigenfunctions and/or spin. Often the socalled total angular momentum, classically speaking the sum of all angular momenta and spins of the composite system, is the quantity of interest, since related operators, sums of orbital angular m...

A problem on the fracture of a thin-walled spherical vessel affected by increasing internal pressure is formulated. The material properties both in stage hardening and softening (prefracture) are described. mathematics catastrophe theory used to write down equilibrium equations find critical value pressure, at which fails.