Results 61 to 70 of about 259,447 (315)
Energy Technology, Volume 10, Issue 12, December 2022., 2022 A numerical framework is presented highlighting effects of compressive stress on fluid transport across multiple porous layers in polymer electrolyte membrane fuel cells. Liquid transport characteristics under various compressive conditions are mainly influenced by pore‐scale capillary pressure.
Yanyao Bao, Zhongzheng Wang, Yixiang Gan
wiley +1 more source
LORETA With Cortical Constraint: Choosing an Adequate Surface Laplacian Operator
Frontiers in Neuroscience, 2018 Low resolution electromagnetic tomography (LORETA) is a well-known method for the solution of the l2-based minimization problem for EEG/MEG source reconstruction. LORETA with a volume-based source space is widely used and much effort has been invested in
Todor Iordanov +7 more
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An extension problem and Hardy's inequality for the fractional Laplace-Beltrami operator on Riemannian symmetric spaces of noncompact type [PDF]
arXiv, 2021 In this paper we study an extension problem for the Laplace-Beltrami operator on Riemannian symmetric spaces of noncompact type and use the solution to prove Hardy-type inequalities for fractional powers of the Laplace-Beltrami operator. Next, we study the mapping properties of the extension operator.
arxiv
Alignment, Rising, Sticking, and Phototaxis: Modulating the Behavior of Hematite Micropeanuts
Advanced Materials Interfaces, EarlyView.Although a rich variety of behaviors, such as rising and phototaxis, are observed with light‐activated semiconductor microparticles, the experimental conditions under which such behaviors occur have not been elucidated. In this study, pH, fuel concentration, and light intensity are varied, revealing diverse behaviors of hematite microparticles.
David P. Rivas +3 more
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Probing charge carrier dynamics in metal halide perovskite solar cells
EcoMat, Volume 5, Issue 1, January 2023., 2023 Perovskite solar cells (PSCs) have been developing rapidly during the past decade. This work reviews and compares the dynamic characterization techniques for charge dynamics over a wide time span from femtoseconds to seconds, which can help further understand and improve PSCs performance towards Shockley‐Queisser limit.
Cheng Qiu +7 more
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Ground State for the Schrödinger Operator with the Weighted Hardy Potential
International Journal of Differential Equations, 2011 We establish the existence of ground states on ℝ𝑁 for the Laplace operator involving the Hardy-type potential. This gives rise to the existence of the principal eigenfunctions for the Laplace operator involving weighted Hardy potentials. We also obtain a
J. Chabrowski, K. Tintarev
doaj +1 more source
Journal of Mathematics, 2021 By coupling of radial kernels and localized Laplace transform, a numerical scheme for the approximation of time fractional anomalous subdiffusion problems is presented.
Muhammad Taufiq, Marjan Uddin
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Laplace operators on Sasaki-Einstein manifolds [PDF]
Journal of High Energy Physics, 2014 6 ...
openaire +4 more sources
On the Minimization of Dirichlet Eigenvalues of the Laplace Operator [PDF]
Journal of Geometric Analysis, 2011 We study the variational problem $$\inf \{ _k( ): \textup{open in}\ \R^m,\ | | < \infty, \ \h(\partial ) \le 1 \},$$ where $ _k( )$ is the $k$'th eigenvalue of the Dirichlet Laplacian acting in $L^2( )$, $\h(\partial )$ is the $(m-1)$- dimensional Hausdorff measure of the boundary of $ $, and $| |$ is the Lebesgue measure of $ $. If $
M. Iversen, M. van den Berg
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4D Printed Self‐Deploying Bio‐Based Scaffolds for the Regeneration of Endoluminal Tissue
Advanced Materials Technologies, EarlyView.A bilayer self‐deploying tubular C‐shaped scaffold, made of natural polymers and triggerable by humidity, is fabricated via 4D printing for the regeneration of gastro‐intestinal tissue. The choice of the materials and their spatial arrangement is guided by physical and biological evaluation, whereas the geometry of the structure is optimized through ...
Irene Chiesa +9 more
wiley +1 more source