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On the dependence of standard and gradient elastic material constants on a field of defects

Mathematics and mechanics of solids, 2020
In this work, we consider a strain gradient elasticity theory with an extended number of field variables: the displacement vector and an additional scalar field defining the internal micro-deformation.
Y. Solyaev   +3 more
semanticscholar   +1 more source

Generalized Gradient-Dependent Plasticy Theory [PDF]

open access: possibleAdvanced Materials Research, 2011
Based on the Generalized Plastic Mechanics (GPM) and strain gradient-dependence of yield surfaces, the differential expressions of the volumetric and shear plastic strains are constructed, then the Generalized Gradient-dependent Plastic Mechanics (GGPM) is established to describe the strain localization characteristics and the basic mechanics ...
Yi Song   +3 more
openaire   +1 more source

Dependence of the Depolarization Tensor on the Displacement Gradient [PDF]

open access: possibleCanadian Journal of Physics, 1971
Expressions are given for the first- and second-order derivatives of the depolarization tensor with respect to the displacement gradient. The results are applied to the special case of the sphere.
J. Grindlay, A. Redlack
openaire   +1 more source

Gradient direction dependencies in natural images

Spatial Vision, 2007
We have used information-theoretic measures to compute the amount of dependency which exists between two and three gradient directions at separate locations in an ensemble of natural images. Control experiments were performed on other image classes: phase randomized natural images, whitened natural images and Gaussian noise images.
Lewis D. Griffin, Alexandre J. Nasrallah
openaire   +3 more sources

On the Reynolds number dependence of velocity-gradient structure and dynamics

Journal of Fluid Mechanics, 2018
We seek to examine the changes in velocity-gradient structure (local streamline topology) and related dynamics as a function of Reynolds number ( $Re_{\unicode[STIX]{x1D706}}$ ). The analysis factorizes the velocity gradient ( $\unicode[STIX]{x1D608}_{ij}
Rishita Das, S. Girimaji
semanticscholar   +1 more source

On gradient dependent diffusivity

Chemical Engineering Science, 1973
Abstract It is a known fact that surface diffusion is dependent on temperature and concentration. Data on adsorption of water in microporous silica gel indicate that an additional quantity is influencing diffusivity in such a system. These observations can be explained by a surface diffusivity depending on concentration gradient.
openaire   +2 more sources

Gradient-dependent heat rectification in thermoelastic solids

Journal of Thermal Stresses, 2021
We study heat rectification by means of application of an inhomogeneous distribution of a tensile mechanical stress in: (a) graded thermoelastic systems with constant cross section; (b) non-graded ...
David Jou   +3 more
openaire   +3 more sources

Experimental electron temperature gradient dependence of heavy impurity transport in fusion devices.

Physical Review Letters, 2010
The turbulent impurity (nickel) transport dependence on the normalized electron temperature gradient has been analyzed in sawtooth-free electron cyclotron wave heated Tore Supra plasmas. In the core, our experimental analysis shows that the lower R/L((T)(
D. Villegas   +5 more
semanticscholar   +1 more source

Diminished gradient dependence of density functionals: constraint satisfaction and self-interaction correction.

Journal of Chemical Physics, 2007
The Perdew-Burke-Ernzerhof (PBE) generalized gradient approximation for the exchange-correlation energy functional has two nonempirical constructions, based on satisfaction of universal exact constraints on the hole density or on the energy. We show here
G. Csonka   +4 more
semanticscholar   +1 more source

Passive driving forces of proximal tubular fluid and bicarbonate transport: gradient dependence of H+ secretion.

American Journal of Physiology, 1983
The effect of oncotic pressure changes on fluid (Jv) and net bicarbonate transport (JHCO-3) and the transepithelial bicarbonate permeability (PHCO-3) were measured by an improved luminal and capillary microperfusion method that allows paired experiments ...
Y. Chan, G. Malnic, G. Giebisch
semanticscholar   +1 more source

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