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Showing 25 to 36 of 38 entries
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Experimental study on the dynamics of gas-fluidized beds.

Physical review. E, Statistical, nonlinear, and soft matter physics

Valverde JM, Quintanilla MA, Castellanos A, Mills P.
PMID: 12636598
Phys Rev E Stat Nonlin Soft Matter Phys. 2003 Jan;67(1):016303. doi: 10.1103/PhysRevE.67.016303. Epub 2003 Jan 14.

Gas-fluidized fine powders display three regimes of fluidization: solidlike, fluidlike, and bubbling. We investigate, from both macroscopic and local measurements, the transition between these regimes. We show that the transition between the solidlike and the fluidlike regimes takes place...

Aggregation and sedimentation in gas-fluidized beds of cohesive powders.

Physical review. E, Statistical, nonlinear, and soft matter physics

Castellanos A, Valverde JM, Quintanilla MA.
PMID: 11690018
Phys Rev E Stat Nonlin Soft Matter Phys. 2001 Oct;64(4):041304. doi: 10.1103/PhysRevE.64.041304. Epub 2001 Sep 24.

We present measurements on the settling velocity of gas-fluidized beds of fine cohesive powders. In the solidlike regime (solid volume fraction straight phi>straight phi(c)) particles are static, sustained by enduring contacts. The settling is hindered by interparticle contacts and...

Using convex quadratic programming to model random media with Gaussian random fields.

Physical review. E, Statistical, nonlinear, and soft matter physics

Quintanilla JA, Jones WM.
PMID: 17501018
Phys Rev E Stat Nonlin Soft Matter Phys. 2007 Apr;75(4):046709. doi: 10.1103/PhysRevE.75.046709. Epub 2007 Apr 30.

Excursion sets of Gaussian random fields (GRFs) have been frequently used in the literature to model two-phase random media with measurable phase autocorrelation functions. The goal of successful modeling is finding the optimal field autocorrelation function that best approximates...

Electromechanics of fluidized beds of nanoparticles.

Physical review. E, Statistical, nonlinear, and soft matter physics

Espin MJ, Valverde JM, Quintanilla MA, Castellanos A.
PMID: 19257027
Phys Rev E Stat Nonlin Soft Matter Phys. 2009 Jan;79(1):011304. doi: 10.1103/PhysRevE.79.011304. Epub 2009 Jan 27.

The electromechanical behavior of a gas-fluidized bed of insulating silica nanoparticles is investigated. When fluidized by gas, these nanoparticles form highly porous agglomerates of size of the order of hundreds of microns, which gives rise to a nonbubbling fluidization...

The permeability transition pore controls cardiac mitochondrial maturation and myocyte differentiation.

Developmental cell

Hom JR, Quintanilla RA, Hoffman DL, de Mesy Bentley KL, Molkentin JD, Sheu SS, Porter GA.
PMID: 21920313
Dev Cell. 2011 Sep 13;21(3):469-78. doi: 10.1016/j.devcel.2011.08.008.

Although mature myocytes rely on mitochondria as the primary source of energy, the role of mitochondria in the developing heart is not well known. Here, we find that closure of the mitochondrial permeability transition pore (mPTP) drives maturation of...

Magnetic field induced inversion in the effect of particle size on powder cohesiveness.

The Journal of chemical physics

Espin MJ, Valverde JM, Quintanilla MA, Castellanos A.
PMID: 20632769
J Chem Phys. 2010 Jul 14;133(2):024706. doi: 10.1063/1.3458002.

Experimental measurements are reported on the tensile yield stress of magnetofluidized beds of fine magnetic powders operated in the cross-flow configuration. In the absence of externally applied magnetic field the yield stress of the powder depends on particle size...

Cytoplasmic innate immune sensing by the caspase-4 non-canonical inflammasome promotes cellular senescence.

Cell death and differentiation

Fernández-Duran I, Quintanilla A, Tarrats N, Birch J, Hari P, Millar FR, Lagnado AB, Smer-Barreto V, Muir M, Brunton VG, Passos JF, Acosta JC.
PMID: 34916628
Cell Death Differ. 2021 Dec 16; doi: 10.1038/s41418-021-00917-6. Epub 2021 Dec 16.

Cytoplasmic recognition of microbial lipopolysaccharides (LPS) in human cells is elicited by the caspase-4 and caspase-5 noncanonical inflammasomes, which induce a form of inflammatory cell death termed pyroptosis. Here we show that LPS-mediated activation of caspase-4 also induces a...

Contribution of Tau Pathology to Mitochondrial Impairment in Neurodegeneration.

Frontiers in neuroscience

Pérez MJ, Jara C, Quintanilla RA.
PMID: 30026680
Front Neurosci. 2018 Jul 05;12:441. doi: 10.3389/fnins.2018.00441. eCollection 2018.

Tau is an essential protein that physiologically promotes the assembly and stabilization of microtubules, and participates in neuronal development, axonal transport, and neuronal polarity. However, in a number of neurodegenerative diseases, including Alzheimer's disease (AD), tau undergoes pathological modifications...

3D-Printed Fe/γ-Al.

ACS applied materials & interfaces

Salazar-Aguilar AD, Quintanilla A, López P, Martínez C, Vega-Díaz SM, Casas JA, Miranzo P, Osendi MI, Belmonte M.
PMID: 34939422
ACS Appl Mater Interfaces. 2021 Dec 23; doi: 10.1021/acsami.1c19755. Epub 2021 Dec 23.

The synthesis of dihydroxybenzenes (DHBZ), essential chemical reagents in numerous industrial processes, with a high degree of selectivity and yield from the hydroxylation of phenol is progressively attracting great interest in the catalysis field. Furthermore, the additive manufacturing of...

Correlation between bulk stresses and interparticle contact forces in fine powders.

Physical review. E, Statistical, nonlinear, and soft matter physics

Quintanilla MA, Castellanos A, Valverde JM.
PMID: 11580326
Phys Rev E Stat Nonlin Soft Matter Phys. 2001 Sep;64(3):031301. doi: 10.1103/PhysRevE.64.031301. Epub 2001 Aug 13.

We present measurements of the tensile strength as a function of the consolidation stress for a set of fine cohesive powders (xerographic toners) of 12.7 microm particle size and with a range of concentration of submicron fumed silica as...

Therapeutic Actions of the Thiazolidinediones in Alzheimer's Disease.

PPAR research

Pérez MJ, Quintanilla RA.
PMID: 26587016
PPAR Res. 2015;2015:957248. doi: 10.1155/2015/957248. Epub 2015 Oct 26.

Alzheimer's disease (AD) is a multifactorial metabolic brain disorder characterized by protein aggregates, synaptic failure, and cognitive impairment. In the AD brain is common to observe the accumulation of senile plaques formed by amyloid-beta (Aβ) peptide and the neurofibrillary...

The medical bookshelf.

Postgraduate medicine

Randall RV, Quintanilla AP, Ryan AJ, Trowbridge AA, Lilienfeld AM, Trowbridge AA, Mann FD, Colcock BP.
PMID: 27434519
Postgrad Med. 1978 Jan;63(1):51-56. doi: 10.1080/00325481.1978.11714721.

No abstract available.

Showing 25 to 36 of 38 entries