Results 31 to 40 of about 313,740 (293)

Deep magnetic field stretching in numerical dynamos

Progress in Earth and Planetary Science, 2018
The process of magnetic field stretching transfers kinetic energy to magnetic energy and thereby maintains dynamos against ohmic dissipation. Stretching at depth may play an important role in shaping the field morphology and in the dynamo action.
Diego Peña, Hagay Amit, Katia J. Pinheiro   +2 more
doaj   +1 more source

Magnetothermal and magnetorotational instabilities in hot accretion flows

, 2011
In a hot, dilute, magnetized accretion flow, the electron mean-free path can be much greater than the Larmor radius, thus thermal conduction is anisotropic and along magnetic field lines.
Balbus, Balbus, Balbus, Balbus, Balbus, De-Fu Bu, Feng Yuan, Igumenshchev, Igumenshchev, Islam, James M. Stone, Johnson, Narayan, Narayan, Narayan, Narayan, Parrish, Parrish, Parrish, Quataert, Quataert, Sharma, Sharma, Sharma, Stone, Stone, Stone, Tanaka, Yuan, Yuan   +29 more
core   +1 more source

Elementary Excitations of a Bose-Einstein Condensate in an Effective Magnetic Field [PDF]

, 2007
We calculate the low energy elementary excitations of a Bose-Einstein Condensate in an effective magnetic field. The field is created by the interplay between light beams carrying orbital angular momentum and the trapped atoms. We examine the role of the
D. R. Murray, Damià Gomila, L. Allen, L. Allen, P. Öhberg, Stephen M. Barnett, Y. Castin   +6 more
core   +2 more sources

Research on the Influence of Multi‐Harmonic Magnetic Field on the Stability of the Radial Suspension Force and Electromagnetic Torque of Bearingless Motors

IET Electric Power Applications
Bearingless motors can realise the rotor active suspension by the radial electromagnetic force, whereas the suspension force and torque ripple will increase the difficulty of motor control, which may lead to the stator and rotor collision and ...
Zexing Li, Huaiyuan Zhang, Hongbo Qiu, Cunxiang Yang   +3 more
doaj   +1 more source

Harmonics in the Squirrel Cage Induction Motor, Analytic Calculation Part II: Synchronous Parasitic Torques, Radial Magnetic Forces

CES Transactions on Electrical Machines and Systems, 2023
The magnetic field generated in the air gap of the cage asynchronous machine and the harmonics of the magnetomotive forces creating that magnetic field, as well as the synchronous parasitic torques, radial magnetic forces have been discussed in great ...
G. Kovács
doaj   +1 more source

Value of MRI Outcomes for Preventive and Early‐Stage Trials in Spinocerebellar Ataxias 1 and 3

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To examine the value of MRI outcomes as endpoints for preventive and early‐stage trials of two polyglutamine spinocerebellar ataxias (SCAs). Methods A cohort of 100 participants (23 SCA1, 63 SCA3, median Scale for the Assessment and Rating of Ataxia (SARA) score = 5, 42% preataxic, and 14 gene‐negative controls) was scanned at 3T up ...
Thiago J. R. Rezende, Emilien Petit, Young Woo Park, Sophie Tezenas du Montcel, James M. Joers, Jonathan M. DuBois, H. Moore Arnold, Michal Povazan, Ipek Özdemir, Guita Banan, Romain Valabregue, Philipp Ehses, Jennifer Faber, Chiadi U. Onyike, Peter B. Barker, Jeremy D. Schmahmann, Eva‐Maria Ratai, Sub H. Subramony, Thomas H. Mareci, Khalaf O. Bushara, Henry Paulson, Thomas Klockgether, Alexandra Durr, Tetsuo Ashizawa, Christophe Lenglet, Gülin Öz, READISCA Investigators   +26 more
wiley   +1 more source

Power Transformer Based on Field-circuit Coupling in Different Operating Modes Simulation Ｒesearch on Leakage Magnetic Field

Journal of Harbin University of Science and Technology, 2021
In view of the change in the operation mode of the transformer，under the impact of the short-circuit current of the transformer，the magnetic field distribution characteristics of the windings are different.
WANG Kang, ZENG Jing-lan, ZHENG Yu, LAN Sheng, DU Guo-an, LIN Ye   +5 more
doaj   +1 more source

Magnetic Activity in the Galactic Centre Region -- Fast Downflows along Rising Magnetic Loops

, 2018
We studied roles of the magnetic field on the gas dynamics in the Galactic bulge by a three-dimensional global magnetohydrodynamical simulation data, particularly focusing on vertical flows that are ubiquitously excited by magnetic activity.
Enokiya, Rei, Fukui, Yasuo, Kakiuchi, Kensuke, Machida, Mami, Matsumoto, Ryoji, Suzuki, Takeru K., Torii, Kazufumi   +6 more
core   +1 more source

Paramagnetic Rim Lesions Are Associated With Trans‐Synaptic Degeneration of the Visual Pathway in Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives Retrograde trans‐synaptic degeneration (rTSD) from posterior visual pathway lesions in multiple sclerosis (MS) is characterized by hemi‐macular ganglion cell‐inner plexiform layer (GCIPL) thinning and contralateral visual field loss.
Abdul Jaber Tayem, Angel Liu, Sargis Manukyan, Mustafa Subhi, Elaina Luskin, Bryan Quah, Sreekanth Madhusoodhanan Nair, Arzu C. Has Silemek, Gabriela Zabala, Yujie Cui, Laura Locke, Paula Barreras, Marwa Kaisey, Vinicius Calsavara, Daniel S. Reich, Nancy L. Sicotte, Pascal Sati, Omar Al‐Louzi   +17 more
wiley   +1 more source

Effects of a static inhomogeneous magnetic field acting on a laser-produced carbon plasma plume

AIP Advances, 2017
We present time- and space-resolved observations of the dynamics of a laser-produced carbon plasma, propagating in a sub-Tesla inhomogeneous magnetic field, with both, axial and radial field gradients.
M. Favre, H. M. Ruiz, L. S. Caballero Bendixsen, S. Reyes, F. Veloso, E. Wyndham, H. Bhuyan   +6 more
doaj   +1 more source