Results 21 to 30 of about 40,996 (265)

Anisotropic Effects in Geometrically Isotropic Lattices [PDF]

open access: yesJournal of Applied Physics, 1958
For spacings and element dimensions small with respect to wavelength the directric constant of a completely general lattice of identical elements may be represented by a tensor (ke). In many applications of artificial dielectrics it is important that the dielectric act as an isotropic medium for microwaves.
openaire   +3 more sources

Isotropic and anisotropic bouncing cosmologies in Palatini gravity [PDF]

open access: yesPhysical Review D, 2010
We study isotropic and anisotropic (Bianchi I) cosmologies in Palatini $f(R)$ and $f(R,R_{μν}R^{μν})$ theories of gravity and consider the existence of non-singular bouncing solutions in the early universe. We find that all $f(R)$ models with isotropic bouncing solutions develop shear singularities in the anisotropic case.
Olmo, Gonzalo J., Barragán, Carlos
openaire   +3 more sources

Identification and parameter estimation for electrical anisotropy in two-dimensional magnetotelluric models

open access: yesFrontiers in Earth Science
When the subsurface media contain electrical anisotropic structure, magnetotelluric isotropic inversion fails to recover the electrical anisotropic structure and may distort the image of isotropic structures. Besides, due to the diversity and uncertainty
Xiaojie Ji   +4 more
doaj   +1 more source

Dissociation of Quarkonium in Hot and Dense Media in an Anisotropic Plasma in the Nonrelativistic Quark Model

open access: yesAdvances in High Energy Physics, 2019
In this paper, quarkonium dissociation is investigated in an anisotropic plasma in the hot and dense media. For that purpose, the multidimensional Schrödinger equation is solved analytically by Nikiforov-Uvarov (NU) method for the real part of the ...
M. Abu-Shady   +2 more
doaj   +1 more source

Effect of grain boundary energy anisotropy in 2D and 3D grain growth process

open access: yesResults in Physics, 2019
Phase-field modeling of isotropic and anisotropic grain growth has been performed in 2D and 3D system. The multi order parameter grain growth model is adopted and OpenMP is implemented to enhance the computational efficiency.
Kunok Chang, Heebaek Chang
doaj   +1 more source

Model of Forming Isotropic and Anisotropic Graphite Under High Temperatures and Fluences Neutron Irradiation

open access: yesEast European Journal of Physics, 2019
A model is proposed for describing the shape change of isotropic and anisotropic graphite under the influence of high temperatures and high neutron radiation fluences. The model is based on a new approach, which uses the following provisions: description
Mykola P. Odeychuk   +4 more
doaj   +1 more source

Cholesteryl ester hydrolysis in J774 macrophages occurs in the cytoplasm and lysosomes

open access: yesJournal of Lipid Research, 1999
The relationship of cholesteryl ester hydrolysis to the physical state of the cholesteryl ester in J774 murine macrophages was explored in cells induced to store cholesteryl esters either in anisotropic (ordered) inclusions or isotropic (liquid ...
Stewart J. Avart   +3 more
doaj   +1 more source

Computational Study of Subdural Cortical Stimulation: Effects of Simulating Anisotropic Conductivity on Activation of Cortical Neurons. [PDF]

open access: yesPLoS ONE, 2015
Subdural cortical stimulation (SuCS) is an appealing method in the treatment of neurological disorders, and computational modeling studies of SuCS have been applied to determine the optimal design for electrotherapy.
Hyeon Seo, Donghyeon Kim, Sung Chan Jun
doaj   +1 more source

Propagation characteristics of astigmatic elliptic vortex beams in nonlocal media with anisotropic nonlinearity

open access: yesResults in Physics
The propagation characteristics of the astigmatic elliptic vortex beam (AEVB) in nonlocal media with isotropic and anisotropic nonlinearities are analytically and numerically investigated.
Tao Zhou, Junjie Li, Huicong Zhang
doaj   +1 more source

Anisotropic solutions by gravitational decoupling

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
We investigate the extension of isotropic interior solutions for static self-gravitating systems to include the effects of anisotropic spherically symmetric gravitational sources by means of the gravitational decoupling realised via the minimal geometric
J. Ovalle   +3 more
doaj   +1 more source

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