Results 131 to 140 of about 71,161 (303)

A theoretical interpretation of diffusion weighted and intravoxel incoherent motion imaging for cerebrospinal fluid flow

open access: yesMagnetic Resonance in Medicine, EarlyView.
Abstract Purpose Diffusion‐weighted imaging (DWI) and intravoxel incoherent motion (IVIM) imaging are well‐established approaches for evaluating cerebrospinal fluid (CSF) flow in subarachnoid and perivascular spaces, and have recently been applied to study ventricular CSF flow.
Tomohiro Otani   +4 more
wiley   +1 more source

Optimization Study on Battery Thermal Management System With Coupled Air and Microchannel Liquid Cooling Strategy

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Because of the surging demand for clean energy, the performance and safety of lithium‐ion batteries (LIBs) for energy storage and conversion have received much attention. This study presents a battery thermal management system (BTMS) that combines air cooling with microchannel liquid cooling.
Xiaolu Yuan   +4 more
wiley   +1 more source

Finite Markov chains and multiple orthogonal polynomials

open access: yesJournal of Computational and Applied Mathematics
40 pages, 3 ...
Amílcar Branquinho   +3 more
openaire   +3 more sources

Transient Dynamic Analysis of Piezoelectric Solids by the Spectral Integrated Neural Networks With Large Time Steps

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT This study presents a novel neural network architecture called spectral integrated neural networks (SINNs), which combines physics‐informed neural networks (PINNs) with time‐spectral integration techniques to efficiently solve two‐ and three‐dimensional dynamic piezoelectric problems.
Zijie Song   +3 more
wiley   +1 more source

Colours of urban selection: carotenoid‐based signals reveal divergent urban/rural evolutionary trajectories in two closely related passerines

open access: yesOikos, EarlyView.
Urbanisation is a major driver of environmental change, reshaping ecological and evolutionary processes. Urban‐driven phenotypic differences are increasingly documented, but the underlying role of selection is still understudied. One pattern is the consistent reduction of carotenoid‐based plumage pigmentation in city birds.
Nicolas Bekka   +3 more
wiley   +1 more source

Testing 3D Printed Carbon Fiber Durability for Next‐Gen Fusion Reactors via Proton Irradiation

open access: yesPolymer Composites, EarlyView.
Schematic of proton irradiation effects on carbon fiber samples evaluated via nanoindentation and Raman spectroscopy. ABSTRACT Carbon fiber‐reinforced composites are promising candidates for plasma‐facing components (PFCs) in next‐generation fusion reactors due to their high strength‐to‐weight ratio, thermal stability, and radiation resistance. However,
U. Saleem   +7 more
wiley   +1 more source

Multi‐Parameter Design of Experiments and Process–Performance Mapping for Flexural Optimization in Three‐Dimensional Printed Polyethylene Terephthalate Glycol

open access: yesPolymer Engineering &Science, EarlyView.
Taguchi‐based optimization and validation of flexural performance in FDM‐printed PETG through experimental testing and process‐response mapping. ABSTRACT This study investigates the influence of key process parameters on the flexural performance of 3D‐printed PETG components fabricated via Fused Deposition Modeling (FDM). A Taguchi L18 orthogonal array
Stelios K. Georgantzinos   +1 more
wiley   +1 more source

Integral and Hypergeometric Representations for Multiple Orthogonal Polynomials

open access: yesInternational Mathematics Research Notices
Abstract This paper addresses two primary objectives in the realm of classical multiple orthogonal polynomials with an arbitrary number of weights. Firstly, it establishes new and explicit hypergeometric expressions for type I Hahn multiple orthogonal polynomials. Secondly, applying the residue theorem and the Mellin transform, the paper
Branquinho, Amílcar   +4 more
openaire   +2 more sources

On the impact of observation‐error correlations in data assimilation, with application to along‐track altimeter data

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
We study the impact of observation‐error correlations in data assimilation using both a simple idealised system and a more realistic configuration. A spectral analysis of data assimilation in the idealised system allows us to gain insights on the effect of observation‐error correlations, which are then validated using the realistic configuration.
Olivier Goux   +4 more
wiley   +1 more source

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