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Electrochemical nucleation and growth of aluminum nanoparticles and leaf-like flat microstructures from reline deep eutectic solvent: Effect of temperature and angular speed of working electrode

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Transactions of Nonferrous Metals Society of China 2022年第3期32卷 1050-1060页

作者： G.VIDAL-GARCÍA C.E.GUINTO-pANO I.GARCÍA-HERNÁNDEZ E.RODRÍGUEZ-CLEMENTE p.morales-gil M.T.RAMÍREZ-SILVA M.ROMERO-ROMO M.pALOMAR-pARDAVÉ Universidad Autónoma Metropolitana-Azcapotzalco Departamento de MaterialesAv.San Pablo 180 Col.Reynosa-TamaulipasCDMXC.P.02200México Instituto Mexicano del petróleo Laboratorio de Caracterización de Materiales Sintéticos y NaturalesEje Central Lázaro Cárdenas 152CDMXC.P.07730México Universidad Autónoma Metropolitana-Iztapalapa Departamento de QuímicaAv.San Rafael Atlixco#186Col.VicentinaCDMX.C.P.09340México

The main objective of this work was to use reline deep eutectic solvent,containing Al(III)ions,for the electrochemical study of the nucleation and growth of aluminum onto a glassy carbon electrode at different temperatures and angular speeds(ω)of the working *** order to fulfill this,electrochemical and surface characterization techniques were *** was found that as temperature increased,the onset of the Al(III)DES reduction occurred at less negative potentials while the current peak of the voltammograms *** indicate that Al deposition thermodynamics and kinetics were ***,no anodic current was detected due to Al passivation by Al(OH)_(3)(s)andγ-Al_(2)O_(3)(s).Atω=0 r/min,the Al deposition chronoamperograms were analyzed by a theoretical model comprising Al 3D diffusion-controlled nucleation and growth and residual water ***,those recorded at different angular speeds were analyzed with a theoretical model where adsorption−desorption and diffusion-controlled nucleation−growth occurred *** deposits were characterized by SEM,EDX,XpS and ***ω=0 r/min,formation of well distributed nanoparticles((78.1±9.5)nm)was observed,while atω=900 r/min the deposit was formed by multiple 10μm diameter leaf-like flat microstructures,composed by Al,Al(OH)_(3)(s)andγ-A2O3(s).

关键词： aluminum electrochemical nucleation deep eutectic solvent angular speed of working electrode temperature

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Interindividual Age-Independent Differences in Human CX43 Impact Ventricular Arrhythmic Risk

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Research 2024年第3期6卷 417-432页

作者： Laura García-Mendívil María pérez-Zabalza Antoni Oliver-Gelabert JoséMaría Vallejo-gil Javier Fañanás-Mastral Manuel Vázquez-Sancho Javier AndréBellido-morales Alexánder Sebastián Vaca-Núñez Carlos Ballester-Cuenca Emiliano Diez Laura Ordovás Esther pueyo Biomedical Signal Interpretation and Computational Simulation group(BSICoS) Aragón Institute of Engineering ResearchUniversity of ZaragozaZaragoza 50018Spain BSICoS Instituto de Investigación Sanitaria Aragón(IISA)Zaragoza 50018Spain Centro Universitario de la Defensa(CUD) Zaragoza 50090Spain. Department of Cardiovascular Surgery University Hospital Miguel ServetZaragoza 50009Spain. Institute of Experimental Medicine and Biology of Cuyo(IMBECU) CONICETMendoza 5500Argentina. Fundación Agencia Aragonesa para la Investigación y el Desarrollo(ARAID) Zaragoza 50018Spain. Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine(CIBER-BBN)Zaragoza 50018Spain.

Connexin 43 (CX43) is one of the major components of gap junctions, the structures responsible for the intercellular communication and transmission of the electrical impulse in the left ventricle. There is limited information on the histological changes of CX43 with age and their effect on electrophysiology, especially in humans. Here, we analyzed left ventricular biopsies from living donors starting at midlife to characterize age-related CX43 remodeling. We assessed its quantity, degree of lateralization, and spatial heterogeneity together with fibrotic deposition. We observed no significant age-related remodeling of CX43. Only spatial heterogeneity increased slightly with age, and this increase was better explained by biological age than by chronological age. Importantly, we found that CX43 features varied considerably among individuals in our population with no relevant relationship to age or fibrosis content, in contrast to animal species. We used our experimental results to feed computational models of human ventricular electrophysiology and to assess the effects of interindividual differences in specific features of CX43 and fibrosis on conduction velocity, action potential duration, and arrhythmogenicity. We found that larger amounts of fibrosis were associated with the highest arrhythmic risk, with this risk being increased when fibrosis deposition was combined with a reduction in CX43 amount and/or with an increase in CX43 spatial heterogeneity. These mechanisms underlying high arrhythmic risk in some individuals were not associated with age in our study population. In conclusion, our data rule out CX43 remodeling as an age-related arrhythmic substrate in the population beyond midlife, but highlight its potential as a proarrhythmic factor at the individual level, especially when combined with increased fibrosis.

关键词： CX43 rhythm Independent

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欧奈尔门徒的卖空准则

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作者：吉尔·莫拉雷斯(gil morales) 克瑞斯·卡彻(Chris Kacher)

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继发于瘢痕性脑回的枕叶癫痫

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世界核心医学期刊文摘(神经病学分册) 2006年第2期 30-31页

作者： gil-Nagel A. Garca morales I. Jiménez Huete A. 高中宝 Dept. of Neurology Hospital Ruber Internacional La Masó38 Mirasierra 28034 Madrid Spain.Dr

Objective: To analyse clinical and therapeutic aspects of epilepsy secondary to ulegyria in adults. patients: Out of 1,020 consecutive patients studied at a tertiary care epilepsy centre, eight cases of ulegyria were identified. All patients had comprehensive clinical evaluation, neuropsychological testing, interictal EEG, and brain magnetic resonance imaging (MRI). In addition, five patients had video-EEG monitoring. Ulegyria was confirmed by histological analysis in two patients who had successful epilepsy surgery. Results: All patients had a histor y of perinatal asphyxia. In four of them there was psychomotor developmental del ay. Mean age at onset of seizures was 5.8 years (range first week to 21 years). Brain MRI demonstrated predominant involvement of occipito-parietal cortical an d subcortical areas. This posterior distribution of lesions was also supported b y the presence of auras with occipital and parietal semiology in six patients, a nd signs of visuospatial dysfunction in five. Four patients had medically refrac tory epilepsy and two of them had significant improvement with surgical treatmen t. Conclusions: In this group of adult epileptic patients with ulegyria brain MR I, ictal semiology, and neurological examination are consistent with occipital l obe epilepsy. Most patients have severe epilepsy, but in some of them epilepsy c an be controlled with antiepileptic drugs, while in others surgical treatment ca n be effective. Brain MRI criteria of ulegyria are well established, and in two cases it was possible to confirm their diagnosis with histological analysis.

关键词：枕叶癫痫脑回瘢痕性

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如何通过卖空股票赚钱

如何通过卖空股票赚钱

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作者： (美)威廉·欧奈尔(William O' Neil) (美)吉尔·摩拉里斯(gil morales)

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