Results 21 to 30 of about 2,423,805 (191)

Event-specific chorus wave and electron seed population models in DREAM3D using the Van Allen Probes [PDF]

, 2014
The DREAM3D diffusion model is applied to Van Allen Probes observations of the fast dropout and strong enhancement of MeV electrons during the October 2012 double-dip storm. We show that in order to explain the very different behavior in the two dips,
Agapitov, Albert, Brautigam, Brautigam, Chen, Chen, D. N. Baker, Elkington, G. D. Reeves, G. S. Cunningham, Ganushkina, Glauert, H. Spence, Horne, Horne, Hudson, Hudson, J. B. Blake, Kletzing, Kress, Li, Li, Li, Meredith, Meredith, Morley, Reeves, Reeves, Reeves, Roederer, Runov, S. K. Morley, Schulz, Selesnick, Selesnick, Shprits, Thorne, Tsyganenko, Tu, Tu, Tu, Turner, Weichao Tu, Y. Chen   +43 more
core   +2 more sources

Theoretical Research on Grouting in Deep Loose Layers Based on the Cylindrical Diffusion Model of Radial Tube Flow

Geofluids, 2022
Grouting in deep, loose layers are a complex process in which many modes such as infiltration, splitting, and compaction coexist. It is of great significance to establish a realistic, simplified physical model to study the law of slurry diffusion. Herein,
Xuesong Wang, Hua Cheng, Zhishu Yao, Chuanxin Rong, Xianwen Huang, Longhui Guo   +5 more
doaj   +1 more source

Modeling inward diffusion and slow decay of energetic electrons in the Earth\u27s outer radiation belt [PDF]

, 2015
A new 3-D diffusion code is used to investigate the inward intrusion and slow decay of energetic radiation belt electrons (\u3e0.5 MeV) observed by the Van Allen Probes during a 10 day quiet period on March 2013.
Angelopoulos, V., Baker, D. N., Blake, J. B., Claudepierre, S., Fennell, J. F., Henderson, M. G., Hospodarsky, G. B., Kletzing, C A., Kurth, W. S., Li, W., Ma, Q., Ni, B., Reeves, Geoffrey, Spence, Harlan E., Thorne, R. M.   +14 more
core   +4 more sources

Alterations in white matter microstructure in neurofibromatosis-1. [PDF]

PLoS ONE, 2012
Neurofibromatosis (NF1) represents the most common single gene cause of learning disabilities. NF1 patients have impairments in frontal lobe based cognitive functions such as attention, working memory, and inhibition.
Katherine H Karlsgodt, Tena Rosser, Evan S Lutkenhoff, Tyrone D Cannon, Alcino Silva, Carrie E Bearden   +5 more
doaj   +1 more source

A General Analytical Approximation to Impulse Response of 3-D Microfluidic Channels in Molecular Communication [PDF]

, 2018
In this paper, the impulse response for a 3-D microfluidic channel in the presence of Poiseuille flow is obtained by solving the diffusion equation in radial coordinates.
Akdeniz, Bayram Cevdet, Dinc, Fatih, Pusane, Ali Emre, Tugcu, Tuna   +3 more
core   +4 more sources

Probing Non-Integer Dimensions [PDF]

, 2006
We show that two-dimensional convection-diffusion problems with a radial sink or source at the origin may be recast as a pure diffusion problem in a fictitious space in which the spatial dimension is continuously-tunable with the Peclet number.
ben-Avraham D, Itzykson C, Ovchinnikov A A, P L Krapivsky, Privman V, Redner S, Redner S, Redner S, S Redner   +8 more
core   +3 more sources

Pitch-angle diffusion coefficients from resonant interactions with electrostatic electron cyclotron harmonic waves in planetary magnetospheres [PDF]

Annales Geophysicae, 2011
Pitch-angle diffusion coefficients have been calculated for resonant interaction with electrostatic electron cyclotron harmonic (ECH) waves in the magnetospheres of Earth, Jupiter, Saturn, Uranus and Neptune.
A. K. Tripathi, R. P. Singhal, K. P. Singh   +2 more
doaj   +1 more source

Density waves in the shearing sheet III. Disc heating [PDF]

, 2001
The problem of dynamical heating of galactic discs by spiral density waves is discussed using the shearing sheet model. The secular evolution of the disc is described quantitatively by a diffusion equation for the distribution function of stars in the ...
Fuchs, B.
core   +3 more sources

On the Transient Atomic/Heat Diffusion in Cylinders and Spheres with Phase Change: A Method to Derive Closed-Form Solutions

International Journal of Mathematics and Mathematical Sciences, 2021
Analytical solutions for the transient single-phase and two-phase inward solid-state diffusion and solidification applied to the radial cylindrical and spherical geometries are proposed.
I. L. Ferreira, A. Garcia, A. L. S. Moreira   +2 more
doaj   +1 more source

A Statistical Survey of Radiation Belt Dropouts Observed by Van Allen Probes

Geophysical Research Letters, 2018
A statistical analysis on the radiation belt dropouts is performed based on 4 years of electron phase space density data from the Van Allen Probes.
Zheng Xiang, Weichao Tu, Binbin Ni, M. G. Henderson, Xing Cao   +4 more
doaj   +1 more source