Results 281 to 290 of about 7,903,050 (330)
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Effective permittivity of log-normal isotropic random media
Journal of Physics A: Mathematical and General, 1995Summary: A method of deriving the effective permittivity \(\varepsilon^{\text{eff}}\) of log-normal \(d\)-dimensional isotropic media is developed. The approach is based on applying the regularized Green function technique for the Laplace operator. The feasibility of exact determining of the effective permittivity is analysed by deriving \(\varepsilon^{
B. Abramovich, P. Indelman
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Normal incidence reflection coefficient approximation at an isotropic–poroelastic interface
Geophysical Prospecting, 2023AbstractSeismic response from porous sediments can be used in reservoir characterization and fluid detection. Reflection coefficient at the isotropic/poroelastic interface is essential to reveal seismic response from the fluid‐saturated deposits. The exact normal incidence reflection coefficient is given by complex mathematic expression and not very ...
Chun Yang +4 more
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Tunable Isotropic Absorber With Phase Change Material VO2
IEEE transactions on nanotechnology, 2020In the past decade, metamaterial absorber has been attracting great attention and making huge progress. Most of previous metamaterial absorbers are working with a narrow band.
Apeng Chen, Zhengyong Song
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International Journal of Rock Mechanics And Mining Sciences, 2019
Brazilian tests are used to determine tensile strengths of rocks. Failure mechanisms, and the strengths determined, are influenced by the configuration of the load contacts.
Z. Aliabadian, Gao-Feng Zhao, A. Russell
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Brazilian tests are used to determine tensile strengths of rocks. Failure mechanisms, and the strengths determined, are influenced by the configuration of the load contacts.
Z. Aliabadian, Gao-Feng Zhao, A. Russell
semanticscholar +1 more source
Existence of non-isotropic conjugate points on rank one normal homogeneous spaces [PDF]
Annals of Global Analysis and Geometry, 2013 We give a positive answer to the Chavel's conjecture [J. Diff. Geom. 4 (1970), 13-20]: a simply connected rank one normal homogeneous space is symmetric if any pair of conjugate points are isotropic. It implies that all simply connected rank one normal homogeneous space with the property that the isotropy action is variational complete is a rank one ...
A M Naveira
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Consequences of deviatoric normality in plasticity with isotropic strain hardening
International Journal for Numerical and Analytical Methods in Geomechanics, 1982AbstractFor many soils experimental evidence suggests that deviation from normality between the plastic strain increments and the yield function is exhibited mainly in the volumetric behaviour, whereas the deviatoric behaviour exhibits normality. An analysis of the consequence of this observation is presented, and it leads to an expression for the ...
Baker, R., Desai, C. S.
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Isotropic plate elements with shear and normal strain deformations
International Journal for Numerical Methods in Engineering, 1987AbstractPlate‐bending finite elements are developed for thin and moderately thick plates. The element takes into account the influence of the transverse normal strain and the transverse shear effects. For the computation of the stresses, an additional plate element is developed to determine the inplane displacements and forces.
Voyiadjis, George Z. +1 more
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An anatomical study of normal meniscal roots with isotropic 3D MRI at 3T
European Journal of Radiology, 2012To clarify the morphological features of normal meniscal roots on magnetic resonance (MR) imaging with an isotropic 3D proton density-weighted (PDW) sequence.3D PDW MR was performed in sixty-two patients at 3T before knee arthroscopy. MR images of 34 normal medial menisci and 33 intact lateral menisci confirmed by arthroscopy were retrospectively ...
A-Hong, Ren +3 more
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The normal shift of a rigid elliptical disk in a transversely isotropic solid
International Journal of Solids and Structures, 2001zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Normalized stiffness ratios for mechanical characterization of isotropic acoustic foams
The Journal of the Acoustical Society of America, 2013This paper presents a method for the mechanical characterization of isotropic foams at low frequency. The objective of this study is to determine the Young's modulus, the Poisson's ratio, and the loss factor of commercially available foam plates. The method is applied on porous samples having square and circular sections.
Sahraoui, Sohbi +4 more
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