Results 241 to 250 of about 245,039 (267)

Mechanical properties of human aortic valve leaflets upon periodic stressing

open access: closedMechanics of Composite Materials, 1983
Vladimir Kasyanov   +3 more
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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
openaire   +2 more sources

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
openaire   +1 more source

Mechanical energy conversion to electricity through periodically stress-induced martensitic transformation in Co-Ni-Ga

Scripta Materialia, 2023
We anticipate and demonstrate experimentally the mechanical-to-electrical energy conversion through the variation of magnetization resulting from a periodical stress-induced martensitic transformation in the single crystalline Co-Ni-Ga ferromagnetic shape memory alloy.
Paul Lindquist   +3 more
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Bone metabolism against mechanical stress shows differing responses in growth periods and adulthood

Physiotherapy, 2015
1.8± 1.3 cm at P2. In the condition UCon, the COG of all subjects displaced to dominant side at both postures. The hip joint angular velocity of Con was significantly higher than that of UCon in both postures (p< 0.01). Moreover, the jerk cost on an anteroposterior direction and the right and left direction was significantly larger Con than UCon in ...
S. Lee   +4 more
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Induction Period of Oxidation and Mechanism of Fracture of Polyolefins under Mechanical Stress

International Journal of Polymeric Materials, 1993
Abstract Induction period of oxidation of solid polyolefins and mechanisms of fracture under mechanical stress are reviewed. It is proposed that the existence of a true induction period at the uninhibited oxidation of solid polyolefins should be attributed to uneven spatial distribution of oxidation sites and slow migration of radicals through the ...
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Stress-adaptive femur bionic triple periodic minimal heterostructures manufactured by SLS technology with excellent mechanical properties

open access: closedAdditive Manufacturing
Ruiyao Liu   +12 more
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Temperature Sensitivity Control and Mechanical Stress Effect of Boron-Doped Long-Period Fiber Gratings

Fiber and Integrated Optics, 2001
We will present in this work the quantitative analysis of the relationship between the doping concentrations of GeO 2 and B 2 O 3 in the core and cladding regions and the temperature sensitivity of the resonance wavelength shift in long-period fiber gratings (LPFGs).
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