Results 31 to 40 of about 7,345 (261)

Fractional Generalizations of Maxwell and Kelvin-Voigt Models for Biopolymer Characterization

open access: yesPLOS ONE, 2015
The paper proposes a fractional generalization of the Maxwell and Kelvin-Voigt rheological models for a description of dynamic behavior of biopolymer materials. It was found that the rheological models of Maxwell-type do not work in the case of modeling of viscoelastic solids, and the model which significantly better describes the nature of changes in ...
Bertrand Jóźwiak   +2 more
openaire   +4 more sources

Duality, Generalized Global Symmetries and Jet Space Isometries

open access: yesUniverse, 2021
We revisit universal features of duality in linear and nonlinear relativistic scalar and Abelian 1-form theories with single or multiple fields, which exhibit ordinary or generalized global symmetries.
Athanasios Chatzistavrakidis   +2 more
doaj   +1 more source

Stress Relaxation Characteristics of Crushed Cane Tail Straw

open access: yesBioResources, 2022
To gain insight into the mechanical properties of crushed sugarcane tail leaves during stress relaxation, a self-made compression equipment was used in this study.
Junle Lei   +3 more
doaj   +2 more sources

Fundamental Solutions of the Equations of Classical and Generalized Heat Conduction Models

open access: yesУчёные записки Казанского университета: Серия Физико-математические науки
This article presents the mathematical formulations of transient heat conduction problems corresponding to the models of classical heat conduction using the Fourier law and generalized heat conduction based on the Cattaneo–Vernotta–Lykov law (Maxwell ...
A. A. Orekhov   +2 more
doaj   +1 more source

Lifshitz effects on holographic p-wave superfluid

open access: yesPhysics Letters B, 2015
In the probe limit, we numerically build a holographic p-wave superfluid model in the four-dimensional Lifshitz black hole coupled to a Maxwell-complex vector field.
Ya-Bo Wu   +6 more
doaj   +1 more source

On the frequency dependence of viscoelastic material characterization with intermittent-contact dynamic atomic force microscopy: avoiding mischaracterization across large frequency ranges

open access: yesBeilstein Journal of Nanotechnology, 2020
Atomic force microscopy (AFM) is a widely use technique to acquire topographical, mechanical, or electromagnetic properties of surfaces, as well as to induce surface modifications at the micrometer and nanometer scale. Viscoelastic materials, examples of
Enrique A. López-Guerra   +1 more
doaj   +1 more source

A multiscale thermodynamic generalization of Maxwell-Stefan diffusion equations and of the dusty gas model

open access: yesInternational Journal of Heat and Mass Transfer, 2022
Despite the fact that the theory of mixtures has been part of non-equilibrium thermodynamics and engineering for a long time, it is far from complete. While it is well formulated and tested in the case of mechanical equilibrium (where only diffusion-like processes take place), the question how to properly describe homogeneous mixtures that flow with ...
Petr Vágner   +3 more
openaire   +3 more sources

Generalized Chern–Simons higher-spin gravity theories in three dimensions

open access: yesNuclear Physics B, 2018
The coupling of spin-3 gauge fields to three-dimensional Maxwell and AdS-Lorentz gravity theories is presented. After showing how the usual spin-3 extensions of the AdS and the Poincaré algebras in three dimensions can be obtained as expansions of sl(3,R)
Ricardo Caroca   +4 more
doaj   +1 more source

A Hamiltonian and geometric formulation of general Vlasov-Maxwell-type models

open access: yesFundamental Plasma Physics, 2023
Three geometric formulations of the Hamiltonian structure of the macroscopic Maxwell equations are given: one in terms of the double de Rham complex, one in terms of L2 duality, and one utilizing an abstract notion of duality. The final of these is used to express the geometric and Hamiltonian structure of kinetic theories in general media. The Poisson
William Barham   +2 more
openaire   +4 more sources

SPG4 and Dementia: Expanding the Clinical Spectrum

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Hereditary spastic paraplegia (HSP) is a group of disorders characterized by progressive spasticity and lower limb weakness, with mutations in SPG4/SPAST being the most common cause. Detailed studies and clinical and molecular comparisons across different populations are missing.
Emanuele Panza   +19 more
wiley   +1 more source

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