~ We propose a method to generate steps at the surface of GaAs single crystals. This method is based on plasticity properties of GaAs. In the simple slip condition, the (541

Concrete is a material whose performance is governed by the subtle interaction of its cohesive and frictional constituents. Since the theories of plasticity, damage mechanics, and fracture mechanics cannot, by themselves, capture both of these phenomena, a novel constitutive model is proposed which combines the theories of plasticity and damage mechanics in a multi-surface formulation. Synthesi...

one of the new research fields in plasticity is related to choosing a proper non-associated flow rule (nafr), instead of the associated one (afr), to predict the experimental results more accurately. the idea of the current research is derived from combining von mises and tresca criteria in the places of yield and plastic potential surfaces in rate-independent plasticity.  this idea is implemen...

Introduction: The effects of cannabinoids (CBs) on synaptic plasticity of hippocampal dentate gyrus neurons have been shown in numerous studies. However, the effect of repeated exposure to cannabinoids on hippocampal function is not fully understood. In this study, using field potential recording, we investigated the effect of repeated administration of the nonselective CB receptor agonist WIN5...

Synaptic plasticity is mediated by changes in the surface expression of AMPA receptors (AMPARs). Stargazin and related transmembrane AMPAR regulatory proteins have emerged as the principal regulators of AMPAR surface expression. Here, we show in heterologous cells and primary neurons that stargazin is physiologically S-nitrosylated, resulting in increased surface expression. S-nitrosylation of ...

A strain gradient void-driven ductile fracture model of single crystals is proposed and applied to simulate crack propagation in oligo-crystal specimens. The based on a thermodynamical framework for homogenized porous solids unifying generalizing existing formulations. This crystal relies multi-surface representation plasticity which the standard Schmid law enhanced account porosity, including ...

Species living under large thermal fluctuations possibly need more flexible physiological capabilities than species living in more stable thermal environments. Deep-soil dwelling species habituate more stable thermal environments than surface dwelling species. We compared the flexibility of lipid composition in response to two acclimation temperatures of soil (4), near surface (2), and surface ...

In the contact of rough surfaces, most patches are at scale micrometers, and thus, their deformation can be dominated by size-dependent plasticity. this paper, we propose a new strategy to analyze role strain gradient plasticity in response between realistic surface rigid plane, which modifies incremental model based on mechanism-based (MSGP) theory. For several different surfaces with topograp...