Listar por tema "Diffusion"
Mostrando ítems 1-17 de 17
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A closed-form solution for the barrier properties of randomly oriented high aspect ratio flake composites
(2019)We derive closed-form solutions for the barrier factor of flake-filled composites, in which the flakes are randomly placed and oriented, with the orientation angles uniformly distributed in an interval [−ɛ, +ɛ], 0 < ɛ < ... -
Direct ethanol fuel cell anode simulation model
(2006)The electrochemical behavior of a direct ethanol feed proton exchange membrane fuel cell (DEFC) operating under steady-state isothermal conditions at 1 atm at both anode and cathode sides is considered. A mathematical model ... -
An electrochemical method for the determination of concentration and diffusion coefficient of ammonia‑nitrogen gas mixtures
(2018)In the present investigation an electrochemical method for the determination of concentration and diffusion coefficient of ammonia in nitrogen (NH3/N2) is proposed by the means of a solid-state amperometric sensor based ... -
Environmental planning in Magnesia prefecture, Greece
(2003)The environmental planning of Magnesia Prefecture is studied in this work, aiming at the assessment of the environmental quality and the determination of the most appropriate objectives and priorities, for the achievement ... -
An evaluation of models and computational approaches for the barrier properties of coatings containing flakes of high aspect ratio
(2019)We report on the results of a comprehensive two-dimensional computational study of diffusion across disordered flake composites. Our objective is (1) the evaluation of existing literature models for the effect of flake ... -
Exploiting morphology and texture of 3D tumor models in DTI for differentiating glioblastoma multiforme from solitary metastasis
(2018)Ambiguous imaging appearance of Glioblastoma Multiforme (GBM) and solitary Metastasis (MET) is a challenge to conventional Magnetic Resonance Imaging (MRI) based diagnosis, leading to exploitation of advanced MRI techniques, ... -
Kinetics of Solute Partitioning During Intercritical Annealing of a Medium-Mn Steel
(2015)The evolution of austenite fraction and solute partitioning (Mn, Al, and C) during intercritical annealing was calculated for a medium-Mn steel containing 11 pct Mn. Austenite growth takes place in three stages. The first ... -
Lateral motion and interaction of gas bubbles growing over spherical and plate heaters
(2006)This work investigates the motion of CO2 bubbles emerging in n-heptane when a heat pulse given to a submerged heater creates local supersaturation. The ensuing slow diffusion-induced bubble expansion makes bubble motion ... -
A method for the calculation of retained austenite evolution during heat-treatment of low-alloy TRIP-assisted steels
(2006)Despite the critical effect of heat-treatment, and in particular of the isothermal bainitic treatment stage, on the amount and stability of retained austenite in the microstructure of low-alloy TRIP-assisted steels, ... -
Molecular dynamics simulation on flows in nano-ribbed and nano-grooved channels
(2015)We present molecular dynamics simulation results on fluid and transport properties for nanochannel flows. The upper channel wall is constructed from periodic roughness elements and flows are simulated both in longitudinal ... -
Molecular dynamics simulation on flows in nano-ribbed and nano-grooved channels
(2016)We present molecular dynamics simulation results on fluid and transport properties for nanochannel flows. The upper channel wall is constructed from periodic roughness elements and flows are simulated both in longitudinal ... -
On the information diffusion between web-based social networks
(2015)The topic of Information diffusion has been in the centre of sociology interest for many years. Even before the rise of Online Social Networks (OSNs), social ties and the way the information flows have been studied in ... -
Optimum design of the entrance of a fishpond laterally to the main stream of an open channel
(2017)In this study, the optimum design of the entrance of a fishpond laterally to the main flow of an open channel was investigated numerically and experimentally. The flow characteristic measurements were realized with the PIV ... -
Orientational randomness and its influence on the barrier properties of flake-filled composite films
(2017)This direct numerical study investigated the effect of orientational randomness on the barrier properties of flake-filled composites. Over 2500 simulations have been conducted in two-dimensional, doubly periodic unit cells, ... -
A simple and low-cost amperometric sensor for measuring H<inf>2</inf>, CO, and CH<inf>4</inf>
(2015)The architecture and the operational features of a simple and low-cost amperometric sensor based on 0.91 ZrO<inf>2</inf> + 0.09 Y<inf>2</inf>O<inf>3</inf> solid electrolyte, used for measuring H<inf>2</inf>, CO, and ... -
A tractography algorithm for MR diffusion tensor imaging based on minimum-cost path
(2016)Diffusion Tensor Imaging (DTI) is a powerful technique for studying tissue connectivity that starts to find routine clinical use in Magnetic Resonance Imaging (MRI), primarily in the brain. The extraction of tracts is an ... -
Two Dimensional Drug Diffusion between Nanoparticles and Fractal Tumors
(2017)Drug delivery methods based on nanoparticles are some of the most promising medical applications in nanotechnology to treat cancer. It is observed that drug released by nanoparticles to the cancer tumors may be driven by ...