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Showing 1 to 12 of 38 entries
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Effect of vibration on the stability of a gas-fluidized bed of fine powder.

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

Valverde JM, Castellanos A, Quintanilla MA.
PMID: 11497573
Phys Rev E Stat Nonlin Soft Matter Phys. 2001 Aug;64(2):021302. doi: 10.1103/PhysRevE.64.021302. Epub 2001 Jul 18.

We have investigated the effect of vibrations on the stability of gas-fluidized beds of fine powders (particle size approximately 10 microm). The powder is uniformly fluidized by an adjustable gas flow that enables us to control the average solid...

Pull-off force of coated fine powders under small consolidation.

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

Chen Y, Quintanilla MA, Yang J, Valverde JM, Dave RN.
PMID: 19518222
Phys Rev E Stat Nonlin Soft Matter Phys. 2009 Apr;79(4):041305. doi: 10.1103/PhysRevE.79.041305. Epub 2009 Apr 14.

In this paper, a three-dimensional model taking into account the contact deformation and surface area coverage (SAC) of nanoadditives is proposed to predict the force required to separate two contacting particles (the pull-off force) under consolidation stress up to...

Heavy Alcohol Exposure Activates Astroglial Hemichannels and Pannexons in the Hippocampus of Adolescent Rats: Effects on Neuroinflammation and Astrocyte Arborization.

Frontiers in cellular neuroscience

Gómez GI, Falcon RV, Maturana CJ, Labra VC, Salgado N, Rojas CA, Oyarzun JE, Cerpa W, Quintanilla RA, Orellana JA.
PMID: 30564103
Front Cell Neurosci. 2018 Dec 04;12:472. doi: 10.3389/fncel.2018.00472. eCollection 2018.

A mounting body of evidence indicates that adolescents are specially more susceptible to alcohol influence than adults. However, the mechanisms underlying this phenomenon remain poorly understood. Astrocyte-mediated gliotransmission is crucial for hippocampal plasticity and recently, the opening of hemichannels...

Contribution of the Nrf2 Pathway on Oxidative Damage and Mitochondrial Failure in Parkinson and Alzheimer's Disease.

Antioxidants (Basel, Switzerland)

Villavicencio Tejo F, Quintanilla RA.
PMID: 34356302
Antioxidants (Basel). 2021 Jul 02;10(7). doi: 10.3390/antiox10071069.

The increase in human life expectancy has become a challenge to reduce the deleterious consequences of aging. Nowadays, an increasing number of the population suffer from age-associated neurodegenerative diseases including Parkinson's disease (PD) and Alzheimer's disease (AD). These disorders...

Predictive Value of Pro-BNP for Heart Failure Readmission after an Acute Coronary Syndrome.

Journal of clinical medicine

Cordero A, Martínez Rey-Rañal E, Moreno MJ, Escribano D, Moreno-Arribas J, Quintanilla MA, Zuazola P, Núñez J, Bertomeu-González V.
PMID: 33924437
J Clin Med. 2021 Apr 13;10(8). doi: 10.3390/jcm10081653.

BACKGROUND: N-terminal pro-brain natural peptide (NT-pro-BNP) is a well-established biomarker of tissue congestion and has prognostic value in patients with heart failure (HF). Nonetheless, there is scarce evidence on its predictive capacity for HF re-admission after an acute coronary...

Effect of particle size and interparticle force on the fluidization behavior of gas-fluidized beds.

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

Valverde JM, Castellanos A, Mills P, Quintanilla MA.
PMID: 12786144
Phys Rev E Stat Nonlin Soft Matter Phys. 2003 May;67(5):051305. doi: 10.1103/PhysRevE.67.051305. Epub 2003 May 23.

Gas-fluidized powders of fine particles display a fluidlike regime in which the bed does not have a yield strength, it expands uniformly as the gas velocity is increased and macroscopic bubbles are absent. In this paper we test the...

Correction to: Adolescent Binge Alcohol Exposure Affects the Brain Function Through Mitochondrial Impairment.

Molecular neurobiology

Tapia-Rojas C, Carvajal FJ, Mira RG, Arce C, Lerma-Cabrera JM, Orellana JA, Cerpa W, Quintanilla RA.
PMID: 30112631
Mol Neurobiol. 2018 Oct;55(10):8216-8217. doi: 10.1007/s12035-018-1268-5.

The authors declare that the original version of this article contained a mistake in the data of the Figure 2, particularly in the LTP data.

Mitochondrial Bioenergetics Is Altered in Fibroblasts from Patients with Sporadic Alzheimer's Disease.

Frontiers in neuroscience

Pérez MJ, Ponce DP, Osorio-Fuentealba C, Behrens MI, Quintanilla RA.
PMID: 29056898
Front Neurosci. 2017 Oct 06;11:553. doi: 10.3389/fnins.2017.00553. eCollection 2017.

The identification of an early biomarker to diagnose Alzheimer's disease (AD) remains a challenge. Neuropathological studies in animal and AD patients have shown that mitochondrial dysfunction is a hallmark of the development of the disease. Current studies suggest the...

The medical bookshelf.

Postgraduate medicine

Rogers AI, Colcock BP, Bowen JC, Heiman MF, Griffin PP, Petersen DA, Quintanilla AP, Romsdahl MM, Pierach CA.
PMID: 27452358
Postgrad Med. 1978 Aug;64(2):162-6. doi: 10.1080/00325481.1978.11714908.

No abstract available.

Amyloid-beta-Acetylcholinesterase complexes potentiate neurodegenerative changes induced by the Abeta peptide. Implications for the pathogenesis of Alzheimer's disease.

Molecular neurodegeneration

Dinamarca MC, Sagal JP, Quintanilla RA, Godoy JA, Arrázola MS, Inestrosa NC.
PMID: 20205793
Mol Neurodegener. 2010 Jan 18;5:4. doi: 10.1186/1750-1326-5-4.

The presence of amyloid-beta (Abeta) deposits in selected brain regions is a hallmark of Alzheimer's disease (AD). The amyloid deposits have "chaperone molecules" which play critical roles in amyloid formation and toxicity. We report here that treatment of rat...

Magnetofluidization of fine magnetite powder.

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

Valverde JM, Espin MJ, Quintanilla MA, Castellanos A.
PMID: 19391934
Phys Rev E Stat Nonlin Soft Matter Phys. 2009 Mar;79(3):031306. doi: 10.1103/PhysRevE.79.031306. Epub 2009 Mar 26.

The behavior of a fluidized bed of fine magnetite particles as affected by a cross-flow magnetic field is investigated. A distinct feature of this naturally cohesive powder, as compared to noncohesive magnetic grains usually employed in magnetofluidized beds, is...

New Implications for the Melanocortin System in Alcohol Drinking Behavior in Adolescents: The Glial Dysfunction Hypothesis.

Frontiers in cellular neuroscience

Orellana JA, Cerpa W, Carvajal MF, Lerma-Cabrera JM, Karahanian E, Osorio-Fuentealba C, Quintanilla RA.
PMID: 28424592
Front Cell Neurosci. 2017 Apr 05;11:90. doi: 10.3389/fncel.2017.00090. eCollection 2017.

Alcohol dependence causes physical, social, and moral harms and currently represents an important public health concern. According to the World Health Organization (WHO), alcoholism is the third leading cause of death worldwide, after tobacco consumption and hypertension. Recent epidemiologic...

Showing 1 to 12 of 38 entries