Search results for "CuO"

Incidence of Abcd1 level on the induction of cell death and organelle dysfunctions triggered by very long chain fatty acids and TNF-alpha on oligoden…

2012

X-linked adrenoleukodystrophy (X-ALD) is characterized by ABCD1 deficiency. This disease is associated with elevated concentrations of very long chain fatty acids (C24:0 and C26:0) in the plasma and tissues of patients. Under its severe form, brain demyelination and inflammation are observed. Therefore, we determined the effects of C24:0 and C26:0 on glial cells:oligodendrocytes, which synthesize myelin, and astrocytes, which participate in immune response. So, 158N murine oligodendrocytes, rat C6 glioma cells, rat primary cultures of neuronal-glial cells, and of oligodendrocytes were treated for various periods of time in the absence or presence of C24:0 and C26:0 used at plasmatic concent…

Crystalloid Lysozyme Inclusions in Paneth Cells of Vitamin A-Deficient Rats

1992

The effect of vitamin A-deficiency on jejunal Paneth cells in rats was investigated. Crystalloid particles were observed in secretion granules of Paneth cells from 6 out of 8 rats with vitamin A-deficiency. The particles were similar to those found in Paneth cells under other experimental conditions. Using an immuno-electron-microscopic technique we demonstrated a clear lysozyme immunoreactivity of these particles. In 2 vitamin A-deficient rats tubular structures have been detected in addition to the crystalloid particles. Crystalloid particles or tubular structures were not detectable in a control group of 8 vitamin A-supplemented rats. The morphological alterations of Paneth cells may be …

Studies on vinblastine-induced autophagocytosis in mouse liver. III. A quantitative study.

1982

The microtubule inhibitor vinblastine (25 mg/kg, i.p.) induces autophagocytosis in mouse hepatocytes. The formation of autophagic vacuoles, their contents, and other cellular changes after vinblastine injection in hepatocytes, were studied by light and electron microscopic morphometric analysis. The volume density of autophagic vacuoles increased significantly during the experimental period (24 h). This increase was due to the significant increase in their number, which was approximately 5-fold 4 h, 12 h and 24 h after vinblastine injection. The mean volume of the autophagic vacuoles increased significantly 1 h after vinblastine injection, at which time the formation of new autophagic vacuo…

El éxito de los procesos de fusión en el mercado de auditoría: el caso de PriceWaterhouseCoopers

2019

Este trabajo ofrece evidencia sobre el resultado de la fusión de Price Waterhouse y Coopers & Lybrand respecto a 2 de los objetivos que pretendían alcanzarse con la operación empresarial, como son el crecimiento de la nueva compa˜nía en términos de cifra de negocios y el aumento de la cuota de mercado. El estudio, aplicando metodología utilizada en trabajos anteriores, comprende el periodo 1997-2003, incluyendo 5 a˜nos posteriores a la fusión, que se llevó a cabo en 1998. Los resultados revelan que PriceWaterhouse y Coopers & Lybrand hubiesen alcanzado una cuota de mercado y una facturación inferior a la de sus competidores más directos en caso de no haberse fusionado, aunque las diferencia…

Evolutionary psychological consumer research:Bold, bright, but better with behavior

2020

Abstract This special issue includes state-of-the-art papers that leverage various theories from evolutionary psychology (EP) to shed light on important consumption-related phenomena. Our guest editorial provides an overview of this EP-based consumer research, highlighting the key content, common denominators, and significant strengths of the articles. The papers cover a wide variety of topics, characteristic of evolutionary-informed research, that we structure around the following three themes: (1) Mating, marketing, and meaningful motivating forces, (2) Conspicuous consumption and salient signs of “showing off,” and (3) Human hormones and biologically-based business research. We close our…

Matematica e musica: linguaggi ... in accordo!

2012

Fabrication and Characterization of Double- and Single-Clamped CuO Nanowire Based Nanoelectromechanical Switches

2021

Electrostatically actuated nanoelectromechanical (NEM) switches hold promise for operation with sharply defined ON/OFF states, high ON/OFF current ratio, low OFF state power consumption, and a compact design. The present challenge for the development of nanoelectromechanical system (NEMS) technology is fabrication of single nanowire based NEM switches. In this work, we demonstrate the first application of CuO nanowires as NEM switch active elements. We develop bottom-up and top-down approaches for NEM switch fabrication, such as CuO nanowire synthesis, lithography, etching, dielectrophoretic alignment of nanowires on electrodes, and nanomanipulations for building devices that are suitable f…

La Media Education a scuola. I primi risultati di una ricerca nelle scuole statali palermitane

2008

Percorsi di Media Education

2015

L’introduzione dei media rappresenta per la scuola un’occasione di cambiamento non solo sul piano della strumentazione materiale, attraverso cui gestire i processi di insegnamento/apprendimento, ma soprattutto per riflettere su tali processi e innovarli in maniera consapevole e critica. I media possono facilitare negli alunni l’acquisizione della consapevolezza dei propri processi mentali e far acquisire una maggiore libertà di gestione del proprio processo di apprendimento; se ben utilizzati i media a scuola possono, rendere più visibili le scelte, le associazioni mentali, il modo di affrontare le situazioni problematiche e le procedure operative che caratterizzano i processi mentali di og…

Glial expression of Swiss cheese (SWS), the Drosophila orthologue of neuropathy target esterase (NTE), is required for neuronal ensheathment and func…

2016

ABSTRACT Mutations in Drosophila Swiss cheese (SWS) or its vertebrate orthologue neuropathy target esterase (NTE), respectively, cause progressive neuronal degeneration in Drosophila and mice and a complex syndrome in humans that includes mental retardation, spastic paraplegia and blindness. SWS and NTE are widely expressed in neurons but can also be found in glia; however, their function in glia has, until now, remained unknown. We have used a knockdown approach to specifically address SWS function in glia and to probe for resulting neuronal dysfunctions. This revealed that loss of SWS in pseudocartridge glia causes the formation of multi-layered glial whorls in the lamina cortex, the firs…