Results 41 to 50 of about 2,423,805 (191)

Radial Fast Diffusion on the Hyperbolic Space [PDF]

open access: yes, 2013
We consider radial solutions to the fast diffusion equation $u_t=\Delta u^m$ on the hyperbolic space $\mathbb{H}^{N}$ for $N \ge 2$, $m\in(m_s,1)$, $m_s=\frac{N-2}{N+2}$.
Grillo, Gabriele, Muratori, Matteo
core   +2 more sources

Verification of SpacePy's radial diffusion radiation belt model [PDF]

open access: yesGeoscientific Model Development, 2012
Model verification, or the process of ensuring that the prescribed equations are properly solved, is a necessary step in code development. Careful, quantitative verification guides users when selecting grid resolution and time step and gives confidence ...
D. T. Welling, J. Koller, E. Camporeale
doaj   +1 more source

Diffusion Model of Parallel Plate Crack Grouting Based on Foaming Expansion Characteristics of Polymer Slurry

open access: yesMathematics, 2021
Polymers as a new chemical grouting material have been widely used in fractured rock mass; however, the understanding of polymer diffusion characteristics still needs to be further improved.
Jiasen Liang, Shaokun Ma, Xueming Du
doaj   +1 more source

Microstructural changes in the trigeminal nerve of patients with episodic migraine assessed using magnetic resonance imaging

open access: yesThe Journal of Headache and Pain, 2020
Background There is histological evidence of microstructural changes in the zygomaticotemporal branch of the trigeminal nerve in migraineurs. This raises the possibility that altered trigeminal nerve properties contribute to migraine pathophysiology ...
Tiffani J. Mungoven   +5 more
doaj   +1 more source

Reactive solute transport in blood flow through a permeable capillary

open access: yesArchives of Mechanics, 2022
The present analysis discusses the solute transport process in a steady 2D (axial and radial) laminar flow of blood through a permeable, finite length capillary.
S. Debnath, A.K. Roy, O.A. Bég
doaj   +1 more source

Effects of spatial diffusion in the inner plasma sheet and the structure of the diffusion tensor [PDF]

open access: yesAnnales Geophysicae, 1995
A standard pair of equations is used to describe the behaviour of a single monoenergetic particle (proton or electron) population on a geomagnetic flux tube drifting in the magnetosphere.
V. E. Zakharov, M. I. Pudovkin
doaj   +1 more source

Comparison of the device physics principles of planar and radial p-n junction nanorod solar cells [PDF]

open access: yes, 2005
A device physics model has been developed for radial p-n junction nanorod solar cells, in which densely packed nanorods, each having a p-n junction in the radial direction, are oriented with the rod axis parallel to the incident light direction.
Atwater, Harry A.   +2 more
core   +1 more source

Accurately specifying storm‐time ULF wave radial diffusion in the radiation belts [PDF]

open access: yes, 2015
Ultralow frequency (ULF) waves can contribute to the transport, acceleration, and loss of electrons in the radiation belts through inward and outward diffusion.
S. Dimitrakoudis   +5 more
semanticscholar   +1 more source

Ensemble modeling of long-term radiation belt dynamics: accounting for variability in radial diffusion

open access: yesFrontiers in Astronomy and Space Sciences
This study presents ensemble modeling of outer radiation belt dynamics observed by Van Allen Probes throughout 2017 using DREAM3D simulations.
Sang-Yun Lee   +5 more
doaj   +1 more source

Reduced-Order Modeling of Diffusive Effects on the Dynamics of Bubbles [PDF]

open access: yes, 2003
The Rayleigh-Plesset equation and its extensions have been used extensively to model spherical bubble dynamics, yet radial diffusion equations must be solved to correctly capture damping effects due to mass and thermal diffusion.
Brennen, C. E.   +2 more
core  

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