Results 231 to 240 of about 246,063 (270)

Dynamic Reorientation of Cultured Cells and Stress Fibers under Mechanical Stress from Periodic Stretching

Experimental Cell Research, 2001
Cell lines derived from rat aorta and frog kidney were cultured on elastic membrane, and mechanical stress was given to the cells by stretching the membrane periodically. Cell reorientation oblique to the direction of stretching occurred as a result of the rapid withdrawal of cell periphery located along the direction of stretching and gradual ...
K, Hayakawa, N, Sato, T, Obinata
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Periodic mechanical stress activates EGFR-dependent Rac1 mitogenic signals in rat nucleus pulpous cells via ERK1/2

Biochemical and Biophysical Research Communications, 2016
The mitogenic effects of periodic mechanical stress on nucleus pulpous cells have been studied extensively but the mechanisms whereby nucleus pulpous cells sense and respond to mechanical stimulation remain a matter of debate. We explored this question by performing cell culture experiments in our self-developed periodic stress field and perfusion ...
Gongming, Gao, Nan, Shen, Xuefeng, Jiang, Huiqing, Sun, Nanwei, Xu, Dong, Zhou, Luming, Nong, Kewei, Ren   +7 more
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A novel role for integrin‐linked kinase in periodic mechanical stress‐mediated ERK1/2 mitogenic signaling in rat chondrocytes

Cell Biology International, 2016
AbstractIn recent years, a variety of studies have been performed to investigate the cellular responses of periodic mechanical stress on chondrocytes. Integrin β1‐mediated ERK1/2 activation was proven to be indispensable in periodic mechanical stress‐induced chondrocyte proliferation and matrix synthesis.
Huanghe, Song, Wenwei, Liang, Shun, Xu, Zeng, Li, Zhefeng, Chen, Weiding, Cui, Jinchun, Zhou, Qing, Wang, Feng, Liu, Weimin, Fan   +9 more
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Structural Analysis of Periodic Trusses and Lattice Materials: States of Self-Stress, Mechanisms, and Mechanical Properties

Journal of Applied Mechanics, 2023
Abstract In the realm of low relative density, a rigid-jointed lattice material exhibits a mechanical response analogous to that of a pin-jointed periodic truss with an identical micro-architecture. This correspondence simplifies the evaluation of the lattice’s structural performance. While established matrix methods in linear algebra
Oguz Aycan Ickin, Cihan Tekoğlu
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Maturation of the adrenocortical stress response: Neuroendocrine control mechanisms and the stress hyporesponsive period

Brain Research Reviews, 1986
During the first two weeks of life rat pups show a markedly reduced adrenocortical response to stress, and this period of adrenocortical quiescence has been termed the 'stress non-responsive period' (SNRP). The adaptive value of the SNRP can be understood in terms of the effects of glucocorticoids on CNS development: excessively high or low corticoid ...
R M, Sapolsky, M J, Meaney
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Mechanisms of periodic deformation of the film-substrate system under compressive stress

Physical Mesomechanics, 2010
The paper considers elastic and plastic deformation of metal, oxide and semiconductor films during their growth, thermal annealing and mechanical loading. It is shown that in a compressed thin film-compliant substrate system, wrinkling of the film surface and coherent deformation of the substrate take place.
A.R. Shugurov, A.V. Panin
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The influence of periodic mechanical stresses on the incommensurate phase of quartz

Physica B: Condensed Matter, 1997
Abstract The kinetics of the stress-induced transition from the β- to the incommensurate phase in quartz has been investigated by time-resolved triple-axis spectroscopy. It is shown that the formation of the modulated phase under external load takes a longer time than the removal of the modulation if the stress is released.
H. Gibhardt, G. Eckold, H. Mitlacher
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