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View article: Characterisation of the Patient Population Attending the Interstitial Lung Disease Clinic at Hospital Garcia de Orta: Implications for Pulmonary Rehabilitation
Characterisation of the Patient Population Attending the Interstitial Lung Disease Clinic at Hospital Garcia de Orta: Implications for Pulmonary Rehabilitation Open
Interstitial lung diseases (ILDs) are chronic respiratory disorders often leading to dyspnoea, reduced exercise tolerance, and poor quality of life. Pulmonary rehabilitation (PR) improves symptoms and function but remains underused in Port…
View article: A numerical 3D fluid-structure interaction model for blood flow in a MRI-based atherosclerotic artery
A numerical 3D fluid-structure interaction model for blood flow in a MRI-based atherosclerotic artery Open
Atherosclerosis, as a result of an inflammatory process, is the thickening and loss of elasticity of the walls of arteries that is associated with the formation of atherosclerotic plaques within the arterial intima, which present a double …
View article: Simulations of Johnson-Segalman viscoelastic fluids flows in shear-thinning regime
Simulations of Johnson-Segalman viscoelastic fluids flows in shear-thinning regime Open
This paper presents selected numerical simulations performed using Johnson–Segalman model with specific setting of the convected derivative resulting in shear-thinning behavior of the model. The results are compared with the generalized Ol…
View article: Nanoalloy Electrocatalysts for Electrochemical Devices
Nanoalloy Electrocatalysts for Electrochemical Devices Open
This Special Issue reprint covers the most recent advances in nanoalloy electrocatalysts, concerning not only the synthesis, characterization, and modeling, but especially reports of their activity, functionality, durability, and low cost.
View article: Analysis of the Shear-Thinning Viscosity Behavior of the Johnson–Segalman Viscoelastic Fluids
Analysis of the Shear-Thinning Viscosity Behavior of the Johnson–Segalman Viscoelastic Fluids Open
This paper presents a numerical comparison of viscoelastic shear-thinning fluid flow using a generalized Oldroyd-B model and Johnson–Segalman model under various settings. Results for the standard shear-thinning generalization of Oldroyd-B…
View article: Anisotropic gradient-based filtering for object segmentation in medical images
Anisotropic gradient-based filtering for object segmentation in medical images Open
A four-step approach for image filtering and object segmentation is explored. The key steps are: i) a low-pass digital differentiator is used to compute the image gradient (vector) field; ii) the regularised anisotropic diffusion method is…
View article: Robust and effective automatic parameter choice for medical image filtering.
Robust and effective automatic parameter choice for medical image filtering. Open
The analysis of medical image data currently requires the interpretation of a trained and experienced user. The technological advances in imaging machinery and the understanding of disease onset, as well as medical planning, all favour the…
View article: Near-Wall Flow in Cerebral Aneurysms
Near-Wall Flow in Cerebral Aneurysms Open
The region where the vascular lumen meets the surrounding endothelium cell layer, hence the interface region between haemodynamics and cell tissue, is of primary importance in the physiological functions of the cardiovascular system. The f…
View article: Mathematical modelling of atherosclerosis
Mathematical modelling of atherosclerosis Open
The review presents the state of the art in the atherosclerosis modelling. It begins with the biological introduction describing the mechanisms of chronic inflammation of artery walls characterizing the development of atherosclerosis. In p…
View article: Multiscale Boundary Conditions for Non-Fickian Diffusion Applied to Drug-Eluting Stents
Multiscale Boundary Conditions for Non-Fickian Diffusion Applied to Drug-Eluting Stents Open
Made available in DSpace on 2018-12-11T17:14:28Z (GMT). No. of bitstreams: 0\n Previous issue date: 2017-01-01
View article: A velocity tracking approach for the Data Assimilation problem in blood flow simulations
A velocity tracking approach for the Data Assimilation problem in blood flow simulations Open
Several advances have been made in Data Assimilation techniques applied to blood flow modeling. Typically, idealized boundary conditions, only verified in straight parts of the vessel, are assumed. We present a general approach, based on a…
View article: A velocity tracking approach for the Data Assimilation problem in blood\n flow simulations
A velocity tracking approach for the Data Assimilation problem in blood\n flow simulations Open
Several advances have been made in Data Assimilation techniques applied to\nblood flow modeling. Typically, idealized boundary conditions, only verified in\nstraight parts of the vessel, are assumed. We present a general approach, based\no…
View article: Numerical simulations of a 3D fluid-structure interaction model for blood flow in an atherosclerotic artery
Numerical simulations of a 3D fluid-structure interaction model for blood flow in an atherosclerotic artery Open
The inflammatory process of atherosclerosis leads to the formation of an atheromatous plaque in the intima of the blood vessel. The plaque rupture may result from the interaction between the blood and the plaque. In each cardiac cycle, blo…
View article: Recent Advances in Partial Differential Equations and Applications
Recent Advances in Partial Differential Equations and Applications Open
We consider spectral optimization problems of the form
\n$$minBig{lambda_1(Omega;D): Omegasubset D, |Omega|=1Big},$$
\nwhere $D$ is a given subset of the Euclidean space $R^d$. Here $lambda_1(Omega;D)$ is the first eigenvalue of the Laplac…
View article: Computational advances applied to medical image processing: an update
Computational advances applied to medical image processing: an update Open
Medical imaging provides a high-fidelity, noninvasive, or minimally invasive means for effective diagnostic and routine checks, and has become an established tool in both clinical and research settings. The interpretation of medical images…