Results 61 to 70 of about 1,910,612 (125)

Laboratory study on the mechanical behaviors of an anisotropic shale rock

Journal of Rock Mechanics and Geotechnical Engineering, 2015
Shale gas is becoming an important energy source worldwide. The geomechanical properties of shale rocks can have a major impact on the efficiency of shale gas exploration.
Quan Gao, Junliang Tao, Jianying Hu, Xiong (Bill) Yu   +3 more
doaj   +1 more source

Plane Electromagnetic Wave in PEMC [PDF]

Journal of Electromagnetic Waves and Applications, 2006
11 pages in Latex, no ...
openaire   +2 more sources

MATHEMATICAL MODELS OF E-POLARIZED ELECTROMAGNETIC PLANE WAVE SCATTERING FROM PRE-FRACTAL CONDUCTING STRIP GRATINGS [PDF]

Radio Physics and Radio Astronomy
Subject and Purpose. The scattering of an E-polarized electromagnetic plane wave by pre-fractal conducting impedance strip gratings is addressed. To order strip systems mathematically, the simplest class of self-similar perfect sets with variable ...
O. V. Bukin, G. I. Koshovy, Yu. F. Logvinov   +2 more
doaj   +1 more source

Screw-symmetric gravitational waves: A double copy of the vortex

Physics Letters B, 2018
Plane gravitational waves can admit a sixth ‘screw’ isometry beyond the usual five. The same is true of plane electromagnetic waves. From the point of view of integrable systems, a sixth isometry would appear to over-constrain particle dynamics in such ...
A. Ilderton
doaj   +1 more source

Propagation of plane waves at the interface of an elastic solid half-space and a microstretch thermoelastic diffusion solid half-space

Latin American Journal of Solids and Structures
The problem of reflection and refraction phenomenon due to plane waves incident obliquely at a plane interface between uniform elastic solid half-space and microstretch thermoelastic diffusion solid half-space has been studied.
Rajneesh Kumar, S.K. Garg, Sanjeev Ahuja
doaj   +1 more source

Spin Angular Momentum at the Focus of a Superposition of an Optical Vortex and a Plane Wave with Linear Polarizations

Photonics
In this paper, tight focusing of a superposition of a vortex laser beam with topological charge n with linear polarization and a plane wave with the same linear polarization directed along the horizontal axis is considered.
Victor V. Kotlyar, Sergey S. Stafeev, Alexey M. Telegin, Elena S. Kozlova   +3 more
doaj   +1 more source

Colliding plane gravitational waves

Journal of Mathematical Physics, 1979
New exact solutions of the vacuum Einstein field equations are constructed which describe the collision of plane gravitational waves. These solutions generalize those of Szekeres by relaxing the requirement of collinear polarization.
openaire   +2 more sources

Frame rate improvement in coherent plane-wave compounding using null subtraction imaging

AIP Advances
Coherent plane-wave compounding (CPWC) has attracted significant attention in preclinical research and clinical diagnosis. However, a trade-off exists in CPWC between the image quality and frame rate.
Yijun Xu, Boyi Li, Jianwen Luo, Xin Liu, Dean Ta   +4 more
doaj   +1 more source

Gravitons in a gravitational plane wave

European Physical Journal C: Particles and Fields
Gravitational plane waves (when Ricci flat) belong to the VSI family. The achronym VSI stands for vanishing scalar invariants, meaning that all scalar invariants built out of Riemann tensor and its derivatives vanish, although the Riemann tensor itself ...
Enrique Álvarez, Jesús Anero, Irene Sánchez-Ruiz   +2 more
doaj   +1 more source