Results 81 to 90 of about 453,285 (316)

Sub-Alfvénic Turbulence: Magnetic-to-kinetic Energy Ratio, Modification of Weak Cascade, and Implications for Magnetic Field Strength Measurements

The Astrophysical Journal
We study the properties of sub-Alfvénic magnetohydrodynamic (MHD) turbulence, i.e., turbulence with Alfvén mach number M _A = V _L / V _A < 1, where V _L is the velocity at the injection scale and V _A is the Alfvén velocity.
A. Lazarian, Ka Wai Ho, Ka Ho Yuen, Ethan Vishniac   +3 more
doaj   +1 more source

Explosive Crystallization of Amorphous Cobalt Films in a Strong Nonuniform Magnetic Field [PDF]

, 2020
Ye. M. Zubarev, Vladimir N Samofalov, O. Yu. Devizenko, В. В. Кондратенко, D. V. Sevriukov, V.A. Sevryukova, V.V. Mamon, T.I. Khramova, T. Sabov, Oleksandr Dubikovskyi, O. Oberemok, O. V. Kosulia   +11 more
openalex   +1 more source

Effect of Foot Orthoses on Midfoot Pain and the Volume of Bone Marrow Lesions in the Midfoot: A Randomized Mechanism of Action Study

Arthritis Care &Research, EarlyView.
Objective Foot orthoses are thought to improve pain by potentially modifying internal mechanical forces. To test this, we explored whether foot orthoses can modify patterns of bone marrow lesions (BMLs) in people with midfoot pain. Methods Forty‐two people were recruited with midfoot pain, and magnetic resonance imaging–confirmed midfoot BMLs ...
Jill Halstead, Anne‐Maree Keenan, Philip G. Conaghan, Dennis McGonagle, Anthony C. Redmond   +4 more
wiley   +1 more source

A bound for relative magnetic helicity in terms of free magnetic energy

Discover Space
The topological complexity of magnetic fields in astrophysics can be described with the aid of magnetic helicity. Amongst its many properties, magnetic helicity provides a bound on the magnetic energy.
David MacTaggart
doaj   +1 more source

OBSERVATION OF HIGH-SPEED OUTFLOWS IN CORONAL LOOPS ASSOCIATED WITH PHOTOSPHERIC MAGNETIC FIELD EVOLUTION [PDF]

, 2012
Jiangtao Su, Yu Liu, Yuandeng Shen, Suo Liu, Xinjie Mao   +4 more
openalex   +1 more source

Diffusion‐Weighted Imaging for the Evaluation of the Sacroiliac Joint in Pediatric Patients

Arthritis Care &Research, EarlyView.
Objective Maturational signal in the sacroiliac joint (SIJ) of skeletally immature youth is often misinterpreted as inflammation. Diagnostic tools that improve specificity are greatly needed. Apparent diffusion coefficient (ADC) values from diffusion‐weighted imaging (DWI), when used with standard imaging, may enhance diagnostic accuracy.
Michael L. Francavilla, Timothy G. Brandon, Dmitry Khrichenko, Rui Xiao, Nancy A. Chauvin, Asef Khwaja, Pamela F. Weiss   +6 more
wiley   +1 more source

Synthesis and characterization of magnetic cross-linked enzyme aggregate and its evaluation of the alternating magnetic field (AMF) effects in the catalytic activity

, 2020
Guilherme Nunes Lucena, Caio Carvalho dos Santos, Gabriel Pinto, Rodolfo Debone Piazza, Wesley Nascimento Guedes, Miguel Jafelicci, Ariela Veloso de Paula, Rodrigo Fernando Costa Marques   +7 more
openalex   +2 more sources

Effect of an applied magnetic field on sloshing pressure in a magnetic fluid [PDF]

, 2013
Shinjiro Kaneko, Takayoshi Ishiyama, Toshiki Sawada   +2 more
openalex   +1 more source

Current Tracking Adaptive Control of Brushless DC Motors

International Journal of Adaptive Control and Signal Processing, EarlyView.
In this paper, the current tracking for Brushless Direct Current motors is approached considering uncertainty in the parameters of the motor's model. An adaptive control scheme to compensate electrical parameters uncertainty is proposed without requiring any knowledge of the mechanical parameters.
Fernanda Ramos‐García, Axel Coronado‐Andrade, Gerardo Espinosa‐Pérez, Luis Alvarez‐Icaza   +3 more
wiley   +1 more source

Magnetic Field Monitoring of Four Massive A–F Supergiants

The Astrophysical Journal Letters
We report magnetic field measurements spanning about 15 yr of four massive (7.5–15 M _⊙ ) supergiant stars: α Per (HD 20902, F5Iab), α Lep (HD 36673A, F0Ib), η Leo (HD 87737, A0Ib) and 13 Mon (HD 46300, A1Ib).
Gregg A. Wade, Mary Oksala, Coralie Neiner, Étienne Boucher, James A. Barron   +4 more
doaj   +1 more source