Results 11 to 20 of about 11,372,945 (322)

The origin, evolution and signatures of primordial magnetic fields [PDF]

Reports on progress in physics. Physical Society, 2015
The universe is magnetized on all scales probed so far. On the largest scales, galaxies and galaxy clusters host magnetic fields at the micro Gauss level coherent on scales up to ten kpc. Recent observational evidence suggests that even the intergalactic
K. Subramanian
semanticscholar   +1 more source

A mathematical model and experimental procedure to analyze the cognitive effects of audio frequency magnetic fields

Frontiers in Human Neuroscience, 2023
Audio frequency magnetic fields (20 Hz−20 kHz) are magnetic fields in extremely low frequency-very low frequency (ELF-VLF) bands that are present near audio equipment and acoustic transducers.
Enrique A. Navarro, Enrique Navarro-Modesto   +1 more
doaj   +1 more source

Simulations of extragalactic magnetic fields and of their observables [PDF]

, 2017
The origin of extragalactic magnetic fields is still poorly understood. Based on a dedicated suite of cosmological magneto-hydrodynamical simulations with the ENZO code we have performed a survey of different models that may have caused present-day ...
F. Vazza, F. Vazza, F. Vazza, M. Brüggen, C. Gheller, S. Hackstein, D. Wittor, P. Hinz   +7 more
semanticscholar   +1 more source

Three-dimensional charge density wave order in YBa2Cu3O6.67 at high magnetic fields [PDF]

Science, 2015
Discerning charge patterns in a cuprate Copper oxides are well known to be able to achieve the order required for superconductivity. They can also achieve another order—one that produces patterns in their charge density.
S. Gerber, H. Jang, H. Nojiri, S. Matsuzawa, H. Yasumura, D. Bonn, D. Bonn, R. Liang, R. Liang, W. Hardy, W. Hardy, Z. Islam, Ankita Mehta, Sanghoon Song, M. Sikorski, D. Stefanescu, Yiping Feng, S. Kivelson, T. Devereaux, Zhixuan Shen, Zhixuan Shen, C. Kao, Wei-Sheng Lee, D. Zhu, Jun-Sik Lee   +24 more
semanticscholar   +1 more source

VELOCITY GRADIENTS AS A TRACER FOR MAGNETIC FIELDS [PDF]

, 2016
Strong Alfvénic turbulence develops eddy-like motions perpendicular to the local direction of magnetic fields. This local alignment induces velocity gradients perpendicular to the local direction of the magnetic field.
Diego F. Gonz'alez-Casanova, A. Lazarian
semanticscholar   +1 more source

Image quality comparisons of coil setups in 3T MRI for brain and head and neck radiotherapy simulations

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose MRI is increasingly used for brain and head and neck radiotherapy treatment planning due to its superior soft tissue contrast. Flexible array coils can be arranged to encompass treatment immobilization devices, which do not fit in diagnostic head/neck coils. Selecting a flexible coil arrangement to replace a diagnostic coil should rely
Evangelia Kaza, Jeffrey P. Guenette, Christian V. Guthier, Steven Hatch, Alexander Marques, Lisa Singer, Jonathan D. Schoenfeld   +6 more
wiley   +1 more source

Treatment planning with a 2.5 MV photon beam for radiation therapy

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose The shallow depth of maximum dose and higher dose fall‐off gradient of a 2.5 MV beam along the central axis that is available for imaging on linear accelerators is investigated for treatment of shallow tumors and sparing the organs at risk (OARs) beyond it.
Navid Khaledi, Chris Hayes, Louise Belshaw, Mark Grattan, Rao Khan, James L. Gräfe   +5 more
wiley   +1 more source

New evidence of the hopping nature of the excess tunnel current in heavily doped silicon p-n diodes at cryogenic temperatures

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2017
The new experimental data concerning the effect of magnetic field on electric properties of silicon diodes with high doping levels both in the emitter and base (conduction of which at low temperatures is determined by the excess tunnel current) has been ...
V. L. Borblik, Yu. M. Shwarts, M. M. Shwarts, A. B. Aleinikov   +3 more
doaj   +1 more source

Volume staging for arteriovenous malformation SRS treatment using VMAT

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Volume staging involves dividing the target volume into smaller parts and treating each part separately. In this study, the feasibility of volume‐staged stereotactic radiosurgery (VS‐SRS) on a linear accelerator using volumetric modulated arc therapy (VMAT) and a frameless patient positioning system is investigated.
Claudia Mendez, Ermias Gete
wiley   +1 more source

Computer Adaptive Testing Using Upper-Confidence Bound Algorithm for Formative Assessment

Applied Sciences, 2019
There is strong support for formative assessment inclusion in learning processes, with the main emphasis on corrective feedback for students. However, traditional testing and Computer Adaptive Testing can be problematic to implement in the classroom ...
Jaroslav Melesko, Vitalij Novickij
doaj   +1 more source