نتایج جستجو برای: generalized plasticity

تعداد نتایج: 223075  

Journal: :Proceedings. Biological sciences 2006
Andrew E McKechnie Robert P Freckleton Walter Jetz

Many birds exhibit short-term, reversible adjustments in basal metabolic rate (BMR), but the overall contribution of phenotypic plasticity to avian metabolic diversity remains unclear. The available BMR data include estimates from birds living in natural environments and captive-raised birds in more homogenous, artificial environments. All previous analyses of interspecific variation in BMR hav...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1998
L H Tecott S F Logue J M Wehner J A Kauer

Serotonin systems have been implicated in the regulation of hippocampal function. Serotonin 5-HT2C receptors are widely expressed throughout the hippocampal formation, and these receptors have been proposed to modulate synaptic plasticity in the visual cortex. To assess the contribution of 5-HT2C receptors to the serotonergic regulation of hippocampal function, mice with a targeted 5-HT2C-recep...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 2006
Brad A Grueter Heather B Gosnell Christopher M Olsen Nicole L Schramm-Sapyta Tanya Nekrasova Gary E Landreth Danny G Winder

The bed nucleus of the stria terminalis (BNST) is a key component of the CNS stress and reward circuit. Synaptic plasticity in this region could in part underlie the persistent behavioral alterations in generalized anxiety and addiction. Group I metabotropic glutamate receptors (mGluRs) have been implicated in stress, addiction, and synaptic plasticity, but their roles in the BNST are unknown. ...

Journal: :international journal of civil engineering 0
m. jahanandish dept. of civil eng., shiraz university, shiraz, iran m. veiskarami dept. of civil eng., shiraz university, shiraz, iran a. ghahramani dept. of civil eng., shiraz university, shiraz, iran

foundations behavior is affected by soil behavior which can vary from dilative to contractive depending on the stress level, particularly in dense frictional soils. the zero extension lines (zel) method has been generally developed to predict the foundations behavior. knowledge of soil behavior enables the zel method to predict the general and local shear failure modes. in this paper, a relativ...

Journal: :journal of linear and topological algebra (jlta) 0
h arianpoor tafresh university. iran.

in this paper we investigate generalized topologies generated by a subbase ofpreorder relators and consider its application in the concept of the complement. we introducethe notion of principal generalized topologies obtained from the new type of open sets andstudy some of their important properties.

2004
A. R. Khoei S. Azizi

The compaction forming of metal powder is a process involving large deformations, large strain, non-linear material behavior and friction. Consequently, the numerical analysis of such a highly non-linear process is a formidable computational problem. In this paper, an ALE technique is presented based on a generalized cap plasticity model in simulation of powder forming processes. In ALE formula...

2003
B. Svendsen

The purpose of this work is the formulation of constitutive models for the inelastic material behaviour of single crystals and polycrystals in which geometrically-necessary dislocations (GNDs) may develop and influence this behaviour. To this end, we focus on the dependence of the development of such dislocations on the inhomogeneity of the inelastic deformation in the material. More precisely,...

Journal: :Journal of neurophysiology 2012
Rahul Kumar Rathour Rishikesh Narayanan

Neuronal dendrites express numerous voltage-gated ion channels (VGICs), typically with spatial gradients in their densities and properties. Dendritic VGICs, their gradients, and their plasticity endow neurons with information processing capabilities that are higher than those of neurons with passive dendrites. Despite this, frameworks that incorporate dendritic VGICs and their plasticity into n...

2008
Wendy W. Wu C. Savio Chan D. James Surmeier John F. Disterhoft

Wu WW, Chan CS, Surmeier DJ, Disterhoft JF. Coupling of L-type Ca channels to KV7/KCNQ channels creates a novel, activity-dependent, homeostatic intrinsic plasticity. J Neurophysiol 100: 1897–1908, 2008. First published August 20, 2008; doi:10.1152/jn.90346.2008. Experience-dependent modification in the electrical properties of central neurons is a form of intrinsic plasticity that occurs durin...

2002
S. N. ATLURI

Details of a unified creep-plasticity theory, based on the concept of an internal time, are presented, and a geometric interpretation of such a theory is given. A' tangent-stiffness' formulation, for the finite-element/boundary-element calculation of weak solutions of the strain-history in the structure, is presented. An implicit algorithm of generalized mid-point radial mapping for computing t...

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