Results 31 to 40 of about 25,373 (175)

Dynamo in Weakly Collisional Nonmagnetized Plasmas Impeded by Landau Damping of Magnetic Fields [PDF]

open access: yes, 2020
We perform fully kinetic simulations of flows known to produce dynamo in magnetohydrodynamics (MHD), considering scenarios with low Reynolds number and high magnetic Prandtl number, relevant for galaxy cluster scale fluctuation dynamos.
Brandenburg, Axel,   +21 more
core   +1 more source

Cio-cio-san no Yūutsu: memoirs of magnetogenesis and Turbulent Dynamo Theory [PDF]

open access: yes, 2013
The origins of cosmic magnetic fields are not as yet well understood. In this dissertation we investigate, via direct numerical simulation, the temporal evolution and behaviour of magnetic fields that are generated from absolute zero initial conditions ...
Adams, Patrick
core   +1 more source

Axisymmetric dynamo action is possible with anisotropic conductivity

open access: yesPhysical Review Research, 2020
A milestone of dynamo theory is Cowling's theorem, known in its modern form as the impossibility for an axisymmetric velocity field to generate an axisymmetric magnetic field by dynamo action.
Franck Plunian, Thierry Alboussière
doaj   +1 more source

Optimising Window Design on Residential Building Facades by Considering Heat Transfer and Natural Lighting in Nontropical Regions of Australia

open access: yesBuildings, 2020
Windows account for a significant proportion of the total energy lost in buildings. The interaction of window type, Window-to-Wall Ratio (WWR) scheduled and window placement height influence natural lighting and heat transfer through windows.
Zixuan Chen   +3 more
doaj   +1 more source

Theoretical study of the ionospheric dynamo region inside the South Atlantic Anomaly

open access: yesEarth and Planetary Physics, 2023
The South Atlantic Anomaly (SAA) is a region where the geomagnetic field is significantly lower than that of the surrounding area. On the basis of the models of CHAOS-7.8, Mass Spectrometer Incoherent Scatter Model (NRLMSISE-00), and International ...
SiQi Yi   +7 more
doaj   +1 more source

Can a Dynamo Mechanism Act at the Magnetopauses of Magnetic Rapidly Rotating Exoplanets?

open access: yesFluids, 2022
An astrophysical dynamo converts the kinetic energy of fluids into magnetic energy. Dynamo is a non-local process. Here, we consider whether a dynamo can operate at the magnetopauses of magnetic rapidly rotating planets.
Elena Belenkaya
doaj   +1 more source

Inverse pH Gradient-Assay for Facile Characterization of Proton-Antiporters in Xenopus Oocytes

open access: yesMembranes
Xenopus oocytes represent one of the most versatile model systems for characterizing the properties of membrane transporters. However, for studying proton-coupled antiporters, the use of Xenopus oocytes has so far been limited to so-called injection ...
Zeinu Mussa Belew   +4 more
doaj   +1 more source

Geodynamo Conductivity Limits

open access: yesGeophysical Research Letters, 2019
In a metal, as in Earth's core, the thermal and electrical conductivities are assumed to be correlated. In a planetary dynamo this implies a contradiction: that both electrical conductivity, which makes it easier to induce current and magnetic field, and
Peter E. Driscoll, Zhixue Du
doaj   +1 more source

Dynamo generated by the centrifugal instability [PDF]

open access: yes, 2016
International audienceWe present a scenario for magnetic field amplification where an electrically conducting fluid is confined in a differentially rotating, spherical shell with thin aspect ratio.
Marcotte, Florence   +3 more
core   +1 more source

Duskside F-region dynamo currents: its relationship with prereversal enhancement of vertical plasma drift [PDF]

open access: yesAnnales Geophysicae, 2010
From magnetic field observations by CHAMP we estimate F-region dynamo current densities near the sunset terminator during solar maximum years from 2001 to 2002.
J. Park   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy