Results 131 to 140 of about 4,997 (268)
Ultraparabolic equations with nonlocal delayed boundary conditions
Discrete and Continuous Dynamical Systems, 2013 A class of ultraparabolic equations with delay, arising from age--structured population diffusion, is analyzed. For such equations well--posedness as well as regularity results with respect to the space variables are proved.
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Ghost effect from Boltzmann theory
Communications on Pure and Applied Mathematics, Volume 79, Issue 3, Page 558-675, March 2026.Abstract Taking place naturally in a gas subject to a given wall temperature distribution, the “ghost effect” exhibits a rare kinetic effect beyond the prediction of classical fluid theory and Fourier law in such a classical problem in physics. As the Knudsen number ε$\varepsilon$ goes to zero, the finite variation of temperature in the bulk is ...
Raffaele Esposito +3 more
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Magnetic Resonance in Medicine, Volume 95, Issue 3, Page 1410-1428, March 2026.ABSTRACT Purpose: Low‐power (LP) chemical exchange saturation transfer (CEST) Z‐spectra have significantly reduced confounding effects and enhanced peak resolvability, thereby improving the observation and quantification of various CEST effects. However, LP Z‐spectra suffer greatly from reduced contrast‐to‐noise ratio (CNR).
Yashwant Kurmi +6 more
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SOME TYPES OF REACTION-DIFFUSION SYSTEMS WITH NONLOCAL BOUNDARY CONDITIONS [PDF]
, 2013 Yuzhu Han, Wenjie Gao
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Existence and multiplicity of solutions to a nonlocal elliptic PDE with variable exponent and nonlinear boundary conditions [PDF]
, 2022 H. Ghorbani, S.H. Rasouli
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Peridynamics with a Cube‐Shaped Neighborhood
PAMM, Volume 26, Issue 1, March 2026.ABSTRACT This paper investigates the effects of cube‐shaped neighborhoods in peridynamic theory as an alternative to the traditional spherical neighborhoods. We examine how different neighborhood geometries influence the behavior of various peridynamic formulations, including bond‐based models, state‐based formulations, and correspondence methods.
Kai Partmann +3 more
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Magnetic Resonance in Medicine, Volume 95, Issue 2, Page 693-705, February 2026.Abstract Purpose UTE MR imaging captures quantitative signals in fast‐relaxing tissues, enabling anatomical visualization and quantitative assessment of T1 and T2*$$ {\mathrm{T}}_2^{\ast } $$ relaxation times. However, the clinical application of quantitative UTE MRI is limited by long acquisition times.
Maik Rothe +7 more
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The Impact of System Softness on Haines Jumps and Drainage in Porous Media
Water Resources Research, Volume 62, Issue 2, February 2026.Abstract Haines jumps are abrupt movements of fluid interfaces accompanied by sudden changes in capillary pressure during multiphase flow in porous media. They are a fundamental pore‐scale mechanism influencing displacement patterns and efficiency. Haines jumps are controlled by the interplay of varying factors, including capillarity, pore geometry ...
Bowen Zhang +3 more
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