The purpose of this study is to elucidate, probably for the first time, the distribution of the molecular viscosity in the entire Left Coronary Artery (LCA) tree. A three-dimensional computer model of the normal LCA tree, reported previously, was adopted for subsequent numerical analysis. The governing mass, momentum and energy flow equations were solved using a previously validated numerical (...

This paper deals with a simple and straightforward procedure for automatic generation of finiteelement or finite-volume meshes of spheroidal domains, consisting of tetrahedra. Besides the equation of the boundary, the generated meshes depend only on an integer parameter, whose value is associated with the degree of refinement. More specifically the procedure applies to the case where the bounda...

In Elastography, strain estimation has been shown to be far more reliable compared to the elastic properties obtained using reconstruction techniques. In this study, to make the method less sensitive to noise in the experimental data and inspired by the clinical practice of palpation (i.e., the use of sequential finger loading), we investigated the effect of using several different smaller quas...

The stability of over-steep road embankments often worsens with time. In many cases the slope deterioration can be ascribed to continual downslope creep a surficial layer soil that has been affected by infiltration rainfall. Such reduces suction in interacting environment. With every season moves further downslope, resulting cracks theslow lane and placing structures constructed at crest fill s...

For cellular bodies involving large elastic deformations, mesoscopic continuum models that take into account the interplay between the geometry and the microstructural responses of the constituents are developed, analysed and compared with finiteelement simulations of cellular structures with different architecture. For these models, constitutive restrictions for the physical plausibility of th...

Wave-propagation effects can be useful in determining the system identification of buildings such as the densely instrumented University of California, Los Angeles, Factor building. Waveform data from the 72-channel array in the 17-story moment-resisting steel frame Factor building are used in comparison with finiteelement calculations for predictive behavior. The high dynamic range of the 24-b...

Arterial stent deployment by balloon or selfexpandable structure introduces shear forces and radial forces that can damage or remove the endothelial cell layer. These factors can subsequently cause failure by restenosis or endothelial leaks. These conditions can be exacerbated by pulsatile blood flow and arterial asymmetry, which can cause migration or displacement. In mechanical or finiteeleme...

We report on the derivation and implementation of the first three-dimensional optical tomographic image reconstruction scheme that is based on the time-independent equation of radiative transfer (ERT) and allows for arbitrarily shaped medium boundaries and arbitrary spatial material distributions. The scheme builds on the concept of model-based iterative image reconstruction, in which a forward...