نتایج جستجو برای: curved strut
تعداد نتایج: 20864 فیلتر نتایج به سال:
Free vibration of a simply-supported magneto-electro-elastic doubly-curved nano-shell is studied based on the first-order shear deformation theory in the presence of the rotary inertia effect. To model the electric and magnetic behaviors of the nano-shell, Gauss’s laws for electrostatics and magneto statics are used. By using Navier’s method, the partial differential equations of motion are red...
Struts as an important structure in the combustion chamber of hypersonic flight vehicles to inject fuel into main flow face a severe thermal environment. Transpiration cooling is considered potential method provide protection for struts. This paper presents numerical investigation on transpiration strut based Darcy–Forchheimer model and local non-equilibrium analyzes mechanism cooling. A coolan...
BACKGROUND Peri-stent coronary evaginations may disturb flow and have been proposed as possible risk factor for late stent thrombosis. We describe incidence, predictors, and possible mechanisms of coronary evaginations 12 months after implantation of bioresorbable vascular scaffolds (BVS). METHODS AND RESULTS One hundred and two BVS implanted in 90 patients (age 63 ± 13 years, 71 males, 14 di...
A major consequence of stent implantation is restenosis that occurs due to neointimal formation. This patho-physiologic process of tissue growth may not be completely eliminated. Recent evidence suggests that there are several factors such as geometry and size of vessel, and stent design that alter hemodynamic parameters, including local wall shear stress distributions, all of which influence t...
AIMS The first generation of the everolimus-eluting bioresorbable vascular scaffold (BVS 1.0) showed an angiographic late loss higher than the metallic everolimus-eluting stent Xience V due to scaffold shrinkage. The new generation (BVS 1.1) presents a different design and manufacturing process than the BVS 1.0. This study sought to evaluate the differences in late shrinkage, neointimal respons...
AIMS Optimizing stent deployment is important for both acute- and long-term outcomes. High-pressure balloon inflation is the standard for coronary stent implantation. However, there is no standardized inflation protocol. We hypothesized that prolonged high-pressure balloon inflation until stabilization of inflation pressure is superior to a rapid inflation/deflation sequence for both stent expa...
An investigation has been made of the potential of pulsed transient thermography for identifying the location of fixtures beneath aircraft skins to facilitate accurate automated assembly operations. Experimental studies have been made of 1.6mm thick aluminium skins and both 2mm and 4mm thick carbon fibre reinforced plastic (CFRP) composite skins over both aluminium and composite struts, represe...
s w t o t n t b w o the Editor: Presently, occurrence of late stent thrombosis (LST) fter drug-eluting stent implantation is a major clinical concern. lthough LST is an infrequent complication, LST can lead to erious results. A long-term follow-up study revealed recently that ST occurs at a constant rate of 0.6%/year for up to 3 years after rug-eluting stent implantation (1). Regarding patholog...
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