Search results for "Tension"

Identification of cardiac organ damage in arterial hypertension: insights by echocardiography for a comprehensive assessment

2020

: Arterial hypertension, a widespread disease, whose prevalence increases with age, represents a major risk factor for cardiovascular events, causing damage in several organs, including the heart. In this context, echocardiography has a clear and pivotal role, being able to assess cardiac morphology and detect haemodynamic changes induced by this disease. 2018 European Society of Cardiology/European Society of Hypertension guidelines on AH identified main echo parameters such as left ventricular mass, relative wall thickness and left atrial volume, for detecting cardiac organ damage. The present review highlights the advantage of additional echocardiographic parameters such as diastolic mea…

Dimension estimates for the boundary of planar Sobolev extension domains

2020

We prove an asymptotically sharp dimension upper-bound for the boundary of bounded simply-connected planar Sobolev $W^{1,p}$-extension domains via the weak mean porosity of the boundary. The sharpness of our estimate is shown by examples.

Itô calculus extended to systems driven by -stable Lévy white noises (a novel clip on the tails of Lévy motion)

2007

Abstract The paper deals with probabilistic characterization of the response of non-linear systems under α -stable Levy white noise input. It is shown that, by properly selecting a clip in the probability density function of the input, the moments of the increments of Levy motion process remain all of the same order ( d t ) , like the increments of the Compound Poisson process. It follows that the Ito calculus extended to Poissonian input, may also be used for α -stable Levy white noise input processes. It is also shown that, when the clip on the tails of the probability of the increments of the Levy motion approaches to infinity, the Einstein–Smoluchowsky equation is restored. Once these c…

Solubilization of an Organic Solute in Aqueous Solutions of Unimeric Block Copolymers and Their Mixtures with Monomeric Surfactant: Volume, Surface T…

2008

The ability of aqueous systems, formed by unimeric copolymers and their mixtures with a monomeric surfactant, in solubilizing large quantities of 1-nitropropane (PrNO2) was explored. The copolymers are F68 and L64, which differ for the hydrophilicity, and the surfactant is sodium dodecanoate. For a better understanding of the mechanism of solubilization, thermodynamic (volume and differential scanning calorimetry), spectroscopy (steady-state fluorescence), viscosity, and interfacial investigations were carried out. PrNO2 causes the micellization of the unimeric copolymer, and the required amount of PrNO2 depends on the composition, the copolymer nature, and the temperature. Large quantities…

Arbitrage international. Groupe de sociétés, Domaine de la clause compromissoire signée par l'une des sociétés du groupe, Application aux autres soci…

1992

International audience; (Paris, 11 janv. 1990, Rev. arbitrage 1992. 95, note D. Cohen ; Orri c/ Soc. des lubrifiants Elf Aquitaine)

Subduction‐Induced Back‐Arc Extension Versus Far‐Field Stretching: Contrasting Modes for Continental Marginal Break‐Up

2021

Progetto per la costruzione di nuove relazioni tra il tessuto urbano e agricolo del parco del Gugliotta a Piano Tavola, Carini

2014

Nuove relazioni tra tessuto urbano e agricolo nel Parco del Gugliotta a Piano Tavola a Carini

2014

A sud-ovest della città di Palermo, lungo la fascia a nord-est dellʼabitato di Carini, segnata da monte Colombrina e attraversata dal torrente Gugliotta, si estende tra città e campagna unʼampia zona, denominata Piano Tavola. Elementi differenti ne costituiscono i margini: la frangia urbana dei volumi che si attestano sullʼasse di corso Italia (a ovest), lʼuliveto sotto Pizzo Castellaccio (a est), la villa Dominici (a nord-est), lʼarea industriale e il tracciato ferroviario (a nord) e la cava in località Manostalla (a sud-est). La lettura del paesaggio evidenzia la pressione esercitata dal costruito verso lʼuliveto e la campagna, la presenza di strade che cingono il quartiere isolandolo e l…

Confident methods for the evaluation of the hydrogen content in nanoporous carbon microfibers

2012

Abstract Nanoporous carbon microfibers were grown by chemical vapor deposition in the vapor-liquid solid mode using different fluid hydrocarbons as precursors in different proportions. The as-grown samples were further treated in argon and hydrogen atmospheres at different pressure conditions and annealed at several temperatures in order to deduce the best conditions for the incorporation and re-incorporation of hydrogen into the microfibers through the nanopores. Since there are some discrepancies in the results on the hydrogen content obtained under vacuum conditions, in this work, we have measured the hydrogen content in the microfibers using several analytical methods in ambient conditi…

Influence of the metabolic syndrome on aortic stiffness in never treated hypertensive patients

2004

Summary Background and aim Metabolic syndrome (MS) carries an increased risk for cardiovascular events and there is a growing awareness that large artery stiffening is a powerful predictor of cardiovascular morbidity and mortality. Little is known about the relationship of MS with aortic stiffness. The aim of our study was to analyze, in patients with essential hypertension, the influence of MS, defined according to the criteria proposed by the Third Report of the National Cholesterol Education Program Expert Panel on Detection, Evaluation, and Treatment of High Blood Cholesterol in Adults (NCEP-ATP III), on carotid–femoral pulse wave velocity (PWV), a measure of aortic stiffness. Methods N…