Search results for "ERT"
showing 10 items of 21537 documents
Thermal and thermo-oxidative stability and kinetics of decomposition of PHBV/sisal composites
2017
The decomposition behaviours of composites made of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and sisal were assessed in terms of thermal stability and decomposition kinetics, under inert and oxidative conditions, by means of multi-rate linear non-isothermal thermogravimetric experiments. A statistical design of experiments was applied to study the influence of the addition of sisal (0-10-20-30%wt), the presence coupling agent (Yes/No) and the applied conditions of work (inert or oxidative). An improvement of the thermal and thermo-oxidative stability of PHBV with the addition of sisal was observed for all cases. An accurate methodology based on iso-conversional methods was applied…
Artichoke fibres as potential reinforcement of composite materials: mechanical and thermal characterization
2011
Environmental Effects on Mechanical, Thermophysical and Electrical Properties of Epoxy Resin Filled with Carbon Nanofillers
2019
The aim of this work was to establish the effect of environmental factors (moisture and temperature) on some mechanical, electrical and thermal properties of epoxy-based composites filled with carbon nanofillers: nanotubes (CNT), nanofibers (CNF) and hybrid nanofiller (nanotubes/nanofibers in the ratio 1:1) and to reveal the most environmentally stable NC. First, the nanocomposites (NC) containing different nanofiller contents were prepared to evaluate electrical percolation threshold and to choose NC at certain electrical conductivity for further characterization of the physical properties in initial state and during/after environmental ageing. The environmental ageing consisted of water a…
Violência, evasão e exclusão na educação superior
2019
The present text focuses on a relationship between higher education, institutional and symbolic violence and exclusion, practicing as a challenge based on reflections on the existence of evasion in Brazilian university. Ignoring the educational institution as a direct responsible for these things, this text considers that a logic in University organization and operation helps to enlarge inequalities that provide the mechanisms of evasion; at the same time, it presents itself as a space of reference and a struggle against social inequalities and violence. On a provisional basis, the text stands out that: depending on the execution of educational procedures and practices undertaken by the ins…
Reducing the Time to Detect Cyber Attacks : Combining Attack Simulation With Detection Logic
2021
Cyber attacks have become harder to detect, causing the average detection time of a successful data breach to be over six months and typically costing the target organization nearly four million dollars. The attacks are becoming more sophisticated and targeted, leaving unprepared environments easy prey for the attackers. Organizations with working antivirus systems and firewalls may be surprised when they discover their network has been encrypted by a ransomware operator. This raises a serious question, how did the attacks go undetected? The conducted research focuses on the most common pitfalls regarding late or even non-existent detection by defining the root cause behind the failed detec…
Cyber Threat Analysis in Smart Terminal Systems
2023
Cyber threats create significant factors that challenge traditional threat prevention mechanisms in harbor areas and port terminals. It has been recognized that understanding security functionalities in the harbor area is based on a more traditional experience of what it requires. It is not enough that the maritime and harbor ecosystem repeats only physical security service routines regarding random checks of passengers and vehicles and customs functions on cargo and passenger transportation. Smart environments and infrastructures are widely expanded in urban areas and create more challenges if old practices are combined with new technologies and functionalities. Traditional threats have ch…
ACTO II / ACT II Mujeres / Women ¿Es gay la música de Chopin? Aspectos de la recepción de la música de Chopin en el siglo XIX
2021
Considering that it is difficult, if not impossible, for an analysis of Chopin?s music to unmask some aspects of his private life (such as an alleged sexual and affective attraction for individuals of his own sex), we can however argue that, throughout the 19th century, a connection was established between his work and a ?feminine universe.? That connection might have had implications in the way in which the feminized image of its author was constructed. The analysis of certain aesthetic and stylistic traits of Chopin?s music can help understand the causes of that perception.
THYROID DISORDERS
2012
Les tecnologies de la informació i la comunicació a l'àrea de Llengua en Educació Primària
2015
Estem davant d’un moment històric en què la construcció de la societat i la cultura es fa des d’un paradigma sociocontructivista. Més si cap amb la irrupció de les Tecnologies de la Informació i la Comunicació (TIC) que permeten arribar, de manera immediata, la informació i el coneixement a qualsevol racó del món i persona. Aquesta ferramenta amb un impacte tan gran a nivell global i col·lectiu, és clar que també ho és a nivell individual. Però, qui s’ha parat a atendre aquesta qüestió des de la base del funcionament del món que és l’Educació? Mitjançant el TFG que es presenta a continuació, recorrerem històricament l’evolució de les TIC, així com les influències d’aquestes dintre de l’àmbi…