Results 1 to 10 of about 372,704 (194)

Diffusion basis spectrum imaging for identifying pathologies in MS subtypes [PDF]

open access: yesAnnals of Clinical and Translational Neurology, 2019
Diffusion basis spectrum imaging (DBSI) combines discrete anisotropic diffusion tensors and the spectrum of isotropic diffusion tensors to model the underlying multiple sclerosis (MS) pathologies. We used clinical MS subtypes as a surrogate of underlying
Afsaneh Shirani   +8 more
doaj   +3 more sources

Micro mechanics of isotropic normal compression [PDF]

open access: yesGéotechnique Letters, 2013
Discrete element modelling has been used to investigate the micro mechanics of isotropic normal compression. One-dimensional (1D) normal compression has previously been modelled in three dimensions using an oedometer and a large number of particles and ...
de Bono, John P.   +3 more
core   +4 more sources

The Normal Casimir Force for Lateral Moving Planes with Isotropic Conductivities

open access: yesPhysics
We consider the two planes at zero temperature with isotropic conductivity that are in relative lateral motion with velocity v and interplane distance a. Two models of conductivity are taken into account—the constant and frequency-dependent Drude models.
Nail Khusnutdinov, Natalia Emelianova
doaj   +3 more sources

Migration Using a Transversely Isotropic Medium with Symmetry Normal to the Reflector Dip [PDF]

open access: yesInternational Journal of Geophysics, 2011
A transversely isotropic (TI) model in which the tilt is constrained to be normal to the dip (DTI model) allows for simplifications in the imaging and velocity model building efforts as compared to a general TI (TTI) model. Although this model cannot be
Tariq Alkhalifah, Paul Sava
doaj   +3 more sources

A Surface Family with a Mutual Geodesic Curve in Galilean 3-Space G3

open access: yesMathematics, 2023
This article gives an approach for establishing a surface family with a mutual geodesic curve in Galilean 3-space G3. Given a smooth space curve, we derive the sufficient and necessary condition for the given curve to be geodesic on it.
Awatif Al-Jedani, Rashad A. Abdel-Baky
doaj   +1 more source

Surface Family with Bertrand Curves as Joint Asymptotic Curves in 3D Galilean Space

open access: yesMathematics, 2023
The primary objective of this work is to discuss a surface family with the similarity of Bertrand curves in 3D Galilean space. Subsequently, by applying the Serret–Frenet frame, we estimate the sufficient and necessary statuses of a surface family with ...
Awatif Al-Jedani, Rashad A. Abdel-Baky
doaj   +1 more source

A nonlinear statistical empirical model for transversely isotropic rocks under uniaxial compression condition [PDF]

open access: yesArchives of Civil Engineering, 2022
The mechanical characteristics of transversely isotropic rocks are significantly different under various levels of inclination, and it is difficult to describe exactly the mechanical behaviour of transversely isotropic rocks.
Yansheng Deng, Chenjie Shen, Baoping Zou
doaj   +1 more source

Surface Family Pair with Bertrand Pair as Common Geodesic Curves in Galilean 3-Space 𝔾3

open access: yesMathematics, 2023
This paper is about deriving the necessary and sufficient conditions of a surface family pair with a Bertrand pair as common geodesic curves in Galilean 3-space G3. Thereafter, the consequence for the ruled surface family pair is also deduced. Meanwhile,
Areej A. Almoneef, Rashad A. Abdel-Baky
doaj   +1 more source

Isotropic octet-truss lattice structure design and anisotropy control strategies for implant application

open access: yesMaterials & Design, 2021
In the field of bone implantation, there is a large demand for isotropic lattice with appropriate mechanical properties and porosity. Two isotropic lattice structure design and anisotropy control strategies are proposed in this work.
Jiawei Feng   +3 more
doaj   +1 more source

Isotropic n-dimensional fringe pattern normalization [PDF]

open access: yesOptics Communications, 2003
Fringe pattern normalization consists in the background suppression and modulation normalization of a given fringe pattern, this process gives as a result a pure sinusoidal phase modulated signal. Normalization is an important operation in the demodulation of the phase from a single fringe pattern where spatially varying background and/or modulation ...
Quiroga Mellado, Juan Antonio   +1 more
openaire   +2 more sources

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