Search results for "Aka"

A General Investigation on the Differential Leakage Factor for Symmetrical and Asymmetrical Multiphase Winding Design

2020

This work provides an investigation based on a fast estimation of the degree of unbalance (D.U.%) and the differential leakage factor (&sigma

Robust fault tolerant tracking controller design for a VTOL aircraft

2013

This paper deals with the fault tolerant control (FTC) design for a Vertical Takeoff and Landing (VTOL) aircraft subject to external disturbances and actuator faults. The aim is to synthesize a fault tolerant controller ensuring trajectory tracking for the nonlinear uncertain system represented by a Takagi-Sugeno (T-S) model. In order to design the FTC law, a proportional integral observer (PIO) is adopted which estimate both of the faults and the faulty system states. Based on the Lyapunov theory and ℓ2 optimization, the trajectory tracking performance and the stability of the closed loop system are analyzed. Sufficient conditions are obtained in terms of linear matrix inequalities (LMI). …

Interpretation of epicardial mapping by means of computer simulations: Applications to calcium, lidocaine and to BRL 34915

1992

The aim of this work was to compare experimental investigations on effects of lidocaine, calcium and, BRL 34915 on reentries to simulated data obtained by use of a model of propagation based on the Huygens' construction method already described in previous works. Calcium and lidocaine effects are investigated on anisotropic conduction conditions. In both cases, reduction in conduction velocities are observed. In lidocaine case, a refractory area is located along the longitudinal axis. In agreement with experimental electrical mapping, the simulations show that the stabilization of reentrant excitation is mainly due to the existence of this refractory area around which the reentrant circuit …

The relaxant effects of cromakalim (BRL 34915) on human isolated airway smooth muscle

1992

Cromakalim (BRL 34915) is a potassium channel opener with therapeutic potential as a bronchodilator in asthma. Cromakalim (0.1–30 μmol/l) inhibited the spontaneous tone of human isolated bronchi n a concentration-related manner being nearly as effective as isoprenaline or theophylline. The order of relaxant potencies (expressed as -log10 IC50 mol/l; mean ±SEM) was isoprenaline (7.29 ± 0.27; n = 8) > cromakalim (5.89 ± 0.12; n = 7) > theophylline (4.07 ±0.13; n = 10). In human bronchi where tone had been raised by addition of histamine (0.1 mmol/l), acetylcholine (0.1 mmol/l) or leukotriene D4 (LTD4, 0.1 μmol/l), the relaxant effect of cromakalim was substantially reduced. Cromakalim suppres…

Effects of phorbol 12,13-diacetate on human isolated bronchus

2000

Protein kinase C appears to be involved in the regulation of airway contractility. Phorbol 12,13-diacetate (PDA; 0.01-10 microM), a protein kinase C activator, produced a transient relaxation followed by a sustained contraction of human isolated bronchus. Different protein kinase C inhibitors (calphostin C, staurosporine and 1-(5-isoquinolinesulfonyl)-2-methylpiperazine) (H-7), nifedipine (NIF; 1 microM) or incubation with Ca(2+)-free medium, inhibited the spasmogenic response to phorbol, while ouabain (10 microM) suppressed only the initial relaxation. These results indicate that the initial relaxation, in response to PDA, is related to the activation of Na(+)/K(+)-ATPase, while the ensuin…

Effects of SCA40 on human isolated bronchus and human polymorphonuclear leukocytes: comparison with rolipram, SKF94120 and levcromakalim

1996

1. SCA40 (0.1 nM-0.1 mM) produced concentration-dependent suppression of the spontaneous tone of human isolated bronchus (-log EC50 = 6.85 +/- 0.09; n = 10) and reached a maximal relaxation similar to that of theophylline (3 mM). The potency (-log EC50 values) of SCA40 compared to other relaxants was rolipram (7.44 +/- 0.12; n = 9) > SCA40 > or = levcromakalim (6.49 +/- 0.04; n = 6) > SKF94120 (5.87 +/- 0.10; n = 9). 2. When tested against the activity of the isoenzymes of cyclic nucleotide phosphodiesterase (PDE) isolated from human bronchus, SCA40 proved highly potent against PDE III (-log IC50 = 6.47 +/- 0.16; n = 4). It was markedly less potent against PDE IV (4.82 +/- 0.18; n = 4) and …

INDAGINI PRELIMINARI SULLA PRESENZA DI CRONOBACTER (ENTEROBACTER SAKAZAKII ) NEL LATTE IN POLVERE

2009

Cronobacter ( Enterobacter sakazakii ) is an emerging foodborne pathogen that causes neonatal meningitis , necrotizing enterocolitis and sepsis with case-fatality rates of 20- 50%. Contaminated infant formula has been epidemiologically identifi ed as the source of transmission, although this organism has been isolated from a wide range of foods, food ingredients or food production environments.

La construcción de la experiencia del viaje en la escritura: figuras del escritor viajero contemporáneo

2014

Resumen: El presente trabajo propone un análisis de la representación del viaje en las obras literarias contemporáneas. Se parte de la hipótesis de que existe una relación entre la experiencia del viaje y su representación en la literatura. El objetivo de este ejercicio crítico es explicar este vínculo, señalando la importancia de la escritura como un espacio en el que se construye la experiencia del viaje.   Palabras Clave: Guevara, Armada, Reverte, Kerouac, Chatwin, Krakauer, Kapucinski,  viaje, transformación del sujeto, conocimiento, metaliteratura, intertextualidad.  Abstract: This article proposes an analysis of the representation of the journey in contemporary literature. It’s assume…

The Scent of a Book : The Book and the Environments of Reading

2020

‘We hugged each other during the cold nights’: the role of affect in an anti-deportation protest network in Finland

2021

This article analyses the role of affect and emotions in Finland’s first large-scale anti-deportation protest, the 2017 Right to Live protest in Helsinki. Despite deportation protests having recently gained scholarly attention, their emotional dimensions have not been sufficiently studied, especially as concerns the emotions of protestors with vulnerable legal status. This article is based on in-depth interviews with key activists in the anti-deportation protest network in Finland, including asylum seekers, refugees and Finnish citizens. The article argues that in order for the protest of asylum seekers facing the threat of deportation to become public and visible, it was important that cit…