Search results for "SCA"
showing 10 items of 23299 documents
Influence of torrefaction pretreatment on the pyrolysis of Eucalyptus clone: A study on kinetics, reaction mechanism and heat flow
2016
Abstract The adverse nature of biomass requires specific pretreatment processes to better utilize it in bioenergy applications, and torrefaction is one of the most recognized thermal pretreatment methods. In this regard, we studied the effect of torrefaction pretreatment on kinetics, reaction mechanism and heat flow during the pyrolysis of biomass by making a comparative analysis between the pyrolysis of dried and torrefied Eucalyptus wood. Torrefied biomass was produced at three temperatures, namely 250, 275 and 300 °C. Pyrolysis was performed at 700 °C. The char yield during pyrolysis increased from 22.39 percent to 36.34 percent when the torrefaction temperature was increased from 250 to…
Third order nonlinear optical properties of novel TetrathiafulvalenePhenanthroline based dyads
2011
The non-linear optical properties of π-conjugated organic molecules such as TTF and their derivatives have recently gained particular interest due to their extended π-system and the strong electron donating character. The knowledge of the nonlinear optical response, as well as the impact of the charge transfer on the nonlinearity is very important. As such systems can be used in a variety of applications. In this study we investigate the nonlinear absorption of novel tetrathiafulvalene-phenanthroline based dyads by means of the Z-scan technique.
Saturation and forward jets in proton-lead collisions at the LHC
2019
We investigate the forward-jet energy spectrum within the Color Glass Condensate framework at 5 TeV center-of-mass energy. In particular, we focus on the kinematic range covered by the CMS-CASTOR calorimeter. We show that our saturation-model calculations are compatible with the CASTOR measurements and that to optimally reproduce the data, effects of multi-parton interactions need to be included. We predict a significant nuclear suppression - reaching down to 50% at the lowest considered jet energies $E_{\rm jet} \sim 500 \, {\rm GeV}$.
Ultrasound and supercritical fluids as useful tools to recover nutrients and bioactive compounds from aquaculture and marine side streams
2021
Los productos provenientes de la acuacultura, así como de los subproductos marinos contienen una cantidad muy importante y diversa de compuestos con diferentes actividades biológicas, atrayendo así el interés de las industrias alimentaria, farmacéutica y cosmética, entre otras. Para beneficiarse de éstos, especialmente subproductos del pescado y microalgas, como fuente potencial de diversos compuestos antioxidantes, proteínas, carbohidratos, pigmentos, compuestos fenólicos, etc., la extracción en sí juega un papel crucial, fundamentalmente cuando se trata de tecnologías verdes y sostenibles. Las técnicas de extracción convencionales implican el uso de disolventes orgánicos y requieren tiemp…
Anthropometric Indicators as a Tool for Diagnosis of Obesity and Other Health Risk Factors: A Literature Review
2021
[EN] Obesity is characterized by the accumulation of an excessive amount of fat mass (FM) in the adipose tissue, subcutaneous, or inside certain organs. The risk does not lie so much in the amount of fat accumulated as in its distribution. Abdominal obesity (central or visceral) is an important risk factor for cardiovascular diseases, diabetes, and cancer, having an important role in the so-called metabolic syndrome. Therefore, it is necessary to prevent, detect, and appropriately treat obesity. The diagnosis is based on anthropometric indices that have been associated with adiposity and its distribution. Indices themselves, or a combination of some of them, conform to a big picture with di…
Respiratory Sinus Arrhythmia Mechanisms in Young Obese Subjects
2020
Autonomic nervous system (ANS) activity and imbalance between its sympathetic and parasympathetic components are important factors contributing to the initiation and progression of many cardiovascular disorders related to obesity. The results on respiratory sinus arrhythmia (RSA) magnitude changes as a parasympathetic index were not straightforward in previous studies on young obese subjects. Considering the potentially unbalanced ANS regulation with impaired parasympathetic control in obese patients, the aim of this study was to compare the relative contribution of baroreflex and non-baroreflex (central) mechanisms to the origin of RSA in obese vs. control subjects. To this end, we applied…
Francesc Mestre y su biblioteca (1450). Vida y obra de un predicador valenciano
2019
Este artículo reconstruye la vida y obra del sacerdote Francesc Mestre (+1450), beneficiado de la catedral de Valencia y de la iglesia de Santa María del Temple de Valencia, además de párroco de Castelló de Xàtiva. Poseedor de una magnífica biblioteca (alrededor de 100 volúmenes) especializada en predicación. Su análisis manifiesta la pugna franciscana entre conventuales y observantes a los que estaba ligado por lazos familiares. Al mismo tiempo, se aporta nueva información sobre el convento franciscano de Morvedre (actual Sagunt) hasta ahora bastante escasa. This article reconstructs the life and work of the priest Francesc Mestre (+1450), benefited in the cathedral of Valencia and the chu…
Análisis de un programa hospitalario de cirugía ambulatoria odontológica para pacientes discapacitados
2017
Introducción: El desarrollo de las unidades de cirugía sin ingreso ha supuesto una gran evolución en la asistencia hospitalaria para el adecuado tratamiento odontológico de los pacientes discapacitados.Objetivo: describir a través de una serie de variables dos grupos de pacientes (con y sin discapacidad) intervenidos de cirugía odontológica sin ingreso y evaluar su respuesta postoperatoria a través de un indicador de bienestar postquirúrgico (IP). Se trata de determinar la influencia de las variables estudiadas en ambos grupos. Material y métodos: se seleccionó un grupo de pacientes discapacitados (n=263) y otro grupo sin discapacidad (n´=311) intervenidos de cirugía odontológica ambulatori…
Système olfactif et neurobiologie
2006
Les connaissances neurobiologiques sur l’odorat progressent désormais rapidement depuis la découverte des récepteurs des odorants, remarquables par leur grand nombre et leur diversité. Des réponses sont maintenant apportées aux questions posées par les propriétés originales de la perception olfactive dont beaucoup sont déterminées dès le niveau de l’organe olfactif, et sont fortement déterminées par la génétique. Les connaissances génétiques sur les récepteurs dévoilent une considérable réduction du nombre de gènes olfactifs fonctionnels dans l’espèce humaine et alimentent une réflexion sur l’évolution de l’odorat. Autre avancée riche de promesses : l’application à l’olfaction des méthodes …
Kísérlet egy összehasonlító vizsgálatra : a nyelvi tájkép dél-szlovákiai, székelyföldi és kárpátaljai falvakban
2017
A tanulmany hat falu nyelvi tajkepenek altalanos jellemzeset adja, es az eredmenyeket osszehasonlitja egyreszt egymassal, masreszt korabbi, az altalanos nyelvi helyzetet osszefoglalo munkakkal. Egy-egy olyan del-szlovakiai, szekelyfoldi es karpataljai falu kerul bemutatasra, ahol a telepulesen beluli szobeli kommunikacio nyelve egyontetűen a magyar, illetve egy-egy olyan falu, melyet szobeli ketnyelvűseg jellemez. A tanulmany masodik resze a felirattipusokat, ezek ketnyelvűseget elemzi. Vegul osszehasonlitjuk az eredmenyeket azzal az altalanos keppel, amit egyeb szociolingvisztikai kutatasok alapjan alkothatunk az adott regiokban elő magyarok nyelvhasznalatarol. Kulcsszavak: nyelvi tajkep, …