Results 91 to 100 of about 382,947 (255)
Theoretical study on loading history dependence of dynamic failure strength for brittle materials
Scientific ReportsWhether the dynamic failure strength of brittle materials is an intrinsic material property has been debated, owing to its dependence on loading history. To further study such a dependence, a characteristic time failure criterion for brittle materials is
Xiao Yang +4 more
doaj +1 more source
Realistic time-scale fully atomistic simulations of surface nucleation of dislocations in pristine nanopillars [PDF]
, 2012 We use our recently proposed accelerated dynamics algorithm (Tiwary and van de Walle, 2011) to calculate temperature and stress dependence of activation free energy for surface nucleation of dislocations in pristine Gold nanopillars under realistic loads.
Tiwary, Pratyush, van de Walle, Axel
core
Strain Rate Dependent Behaviour of a Natural Stiff Clay
Soils and Foundations, 1999 The experimental results reported in this paper were obtained performing monotonic, cyclic and dynamic torsional shear tests on a stiff Italian clay in the pre-failure stress-strain range. The experimental clearly demonstrate that the small strain values of shear stiffness and damping ratio are significantly affected by strain rate : while the initial ...
D'ONOFRIO, ANNA +2 more
openaire +3 more sources
Long‐term hippocampal alterations and cognitive impairment in a murine model of surgical sepsis
FEBS Open Bio, EarlyView.Using a mouse model of surgical sepsis, we tested long‐term memory and analyzed the transcriptome of single cells isolated from the hippocampus. Survivor mice showed worse memory, loss of certain brain cell subpopulations, and abnormal immune cell activity—suggesting that post‐sepsis brain alterations may be linked to cognitive deficits.
Dong Seong Cho +4 more
wiley +1 more source
Temperature and Strain-Rate Dependence of Surface Dislocation Nucleation
Physical Review Letters, 2008 Dislocation nucleation is essential to the plastic deformation of small-volume crystalline solids. The free surface may act as an effective source of dislocations to initiate and sustain plastic flow, in conjunction with bulk sources. Here, we develop an atomistic modeling framework to address the probabilistic nature of surface dislocation nucleation.
Li, Ju +4 more
openaire +4 more sources
FEBS Open Bio, EarlyView.Evolutionary analysis across 32 placental mammals identified positive selection at residues H148 and W149 in the immune receptor FcγR1. Ancestral reconstruction combined with molecular dynamics simulations reveals how these mutations may influence receptor structure and dynamics, providing insight into the evolution of antibody recognition and immune ...
David A. Young +7 more
wiley +1 more source
, 2010 The effect of finite temperature $T$ and finite strain rate $\dot\gamma$ on the statistical physics of plastic deformations in amorphous solids made of $N$ particles is investigated.
Edan Lerner +4 more
core +1 more source
A strain-rate-dependent force model of lithospheric strength [PDF]
Geophysical Journal International, 2000 Summary This study investigates the rate of intraplate deformation, the vertically integrated stress magnitude and vertical distributions of tectonic stress in continental lithosphere that is subjected to horizontal tectonic force. The fundamental assumption of this study is that the magnitude of the imposed tectonic force depends on the rate of ...
openaire +3 more sources
Acute caffeine treatment protects the developing retina from ischemia‐induced cell death
FEBS Open Bio, EarlyView.Caffeine reduces cell death in the developing retina under ischemia (OGD). This effect does not involve BDNF upregulation or antioxidant pathways (NRF2/VEGF). Neuroprotection occurs mainly through adenosine A2A receptor antagonism, decreasing glutamate release and excitotoxicity, highlighting caffeine's potential as an acute neuroprotective agent in ...
Amanda Alves Nascimento +6 more
wiley +1 more source
Literature study report of plasticity induced anisotropic damage modeling for forming processes [PDF]
, 2009 A literature study report covering the topics; micromechanics of damage, continuum damage mechanics (gurson model and effective variable concept) and the dependence of damage on strain rate and ...
Niazi, M.S.
core +1 more source