Results 31 to 40 of about 46,756 (266)

Microstructural Characterization of Spheroidal Graphite Irons: A Study of the Effect of Preconditioning Treatment

open access: yesMetals, 2022
The effect of preconditioning treatments on the control and improvement of spheroidal graphite iron (SGI) microstructure was evaluated. In the melt, 0.15% of Zr-(Ca, Al) FeSi preconditioner was added into different conditions.
António Pires   +5 more
doaj   +1 more source

Preconditioning

open access: yesActa Numerica, 2015
The computational solution of problems can be restricted by the availability of solution methods for linear(ized) systems of equations. In conjunction with iterative methods, preconditioning is often the vital component in enabling the solution of such systems when the dimension is large. We attempt a broad review of preconditioning methods.
openaire   +1 more source

Preconditioning in Expectation

open access: yesCoRR, 2014
We show that preconditioners constructed by random sampling can perform well without meeting the standard requirements of iterative methods. When applied to graph Laplacians, this leads to ultra-sparsifiers that in expectation behave as the nearly-optimal ones given by [Kolla-Makarychev-Saberi-Teng STOC`10].
Michael B. Cohen   +4 more
openaire   +2 more sources

Myocardial ischemic preconditioning in a porcine model leads to rapid changes in cardiac extracellular vesicle messenger RNA content

open access: yesInternational Journal of Cardiology: Heart & Vasculature, 2015
Background: Extracellular vesicles (EVs) are thought to exert protective effects after ischemic and remote ischemic preconditioning. It is not well understood which EV content factors are most relevant for protective effects. We hypothesize that ischemic
Kristina Svennerholm   +7 more
doaj   +1 more source

Repetitive spreading depolarization induces gene expression changes related to synaptic plasticity and neuroprotective pathways

open access: yesFrontiers in Cellular Neuroscience, 2023
Spreading depolarization (SD) is a slowly propagating wave of profound depolarization that sweeps through cortical tissue. While much emphasis has been placed on the damaging consequences of SD, there is uncertainty surrounding the potential activation ...
Michela Dell’Orco   +6 more
doaj   +1 more source

Operator Preconditioning

open access: yesComputers & Mathematics with Applications, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Optimization of oxidative preconditioning of hWJ-MSCs to overcome oxidative stress

open access: yesФактори експериментальної еволюції організмів
Aim. It has been shown that biological properties of MSCs can be modulated by preconditioning of MSCs under specific culture conditions. Our study aimed to evaluate the effects of different H2O2 concentrations during oxidative preconditioning of hWJ ...
M. V. Kovalchuk   +2 more
doaj   +1 more source

Hijacking emergency granulopoiesis: Neutrophil ontogeny and reprogramming in cancer

open access: yesMolecular Oncology, EarlyView.
Neutrophils are highly plastic innate immune cells; their functions in cancer extend beyond the tumour microenvironment. This Review summarises current understanding of neutrophil maturation and heterogeneity and highlights tumour‐induced granulopoiesis as a systemic programme that expands immature, immunosuppressive neutrophils via tumour‐derived ...
Gabriela Marinescu, Yi Feng
wiley   +1 more source

Acute caffeine treatment protects the developing retina from ischemia‐induced cell death

open access: yesFEBS 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

Ischemic and Pharmacological Preconditioning

open access: yesОбщая реаниматология, 2011
The review article deals with the problem of ischemic preconditioning, the universal physiological mechanism of cell protection from hypoxia. Preconditioning is the term used to describe a phenomenon of the enhanced tolerance of a cell to a damaging ...
V. V. Likhvantsev   +7 more
doaj   +1 more source

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