Search results for "PERT"
showing 10 items of 7689 documents
The Recurrent Characteristics of Historic Buildings as a Support to Improve their Energy Performances: The Case Study of Palermo
2017
Abstract The analysis of the recurrent characteristics of the local historic architecture is useful to develop large-scale energy analyses, regulations and financial strategies, but also to support technical guidelines for an energy improvement balanced with conservation. For this purpose, a multi-scale methodology ranging from envelope components to the urban dimension is necessary. In the research here exposed, this approach is investigated by focusing on the historic architecture of Palermo. For this heritage, the collection of thermal and hygrometric data for envelope components is combined with the examination of representative constructions, based on building stock categorization. Int…
Influence of polymer electrospun nanofibers on thermal properties of epoxy resins
2019
Electrospinning of polymers has gained surging interest in the last decades due to its wide range of applications in different fields, such as sensors, electronic devices, separation systems, biomedical materials. Still there are only few reports on the use of these nanofibers as reinforcement in polymer composites. In this paper, solution electrospinning was employed to produce nanofibrous mats impregnating two epoxy resins to form “monolayer“systems, with the aim to study the influence of the nanofibers on both the curing behaviour and the morphology of the resin systems. Three polymers were chosen for producing electrospun mats, a polysulfone (PSF), a polyamide Nylon 6,6 (Ny66) and a pol…
A library of monoalkenylsilsesquioxanes as potential comonomers for synthesis of hybrid materials
2018
In this paper we demonstrate a facile and efficient synthesis of monoalkenylsubstituted POSS compounds, i.e., R7(Si8O12)-alkenyl and R7(Si8O12)(OSiMe2)-alkenyl with a functional alkenyl group of chain length (from vinyl to dec-9-enyl, with or without additional –OSiMe2– spacer between the silsesquioxane core and alkenyl moiety) and with five types of inert groups (Et, iBu, iOc, Cy, Ph) at the POSS core. These compounds constitute a library of monosubstituted POSS systems, including thorough spectroscopic and thermal characteristics. These findings could be especially useful for material chemists applying the compounds as modifiers or comonomers for copolymerization reaction, e.g., with olef…
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…
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…
Elever som flerspråkiga : åttondeklassisters språkportfolier och svenska språkets ställning i dem
2011
Tämä pro gradu-tutkielma keskittyy tutkimaan oppilaiden kokemuksellista monikielisyyttä sekä oppilaiden yksilöllisiä kielirepertuaareja. Tarkoituksena on tutkia oppilaita monikielisinä kielenkäyttäjinä sekä tutkia mitä kieliä ja kielimuotoja heidän kielirepertuaareihinsa lukeutuu. Tutkielma pyrkii vastaamaan myös siihen, millainen rooli koulussa opiskeltavilla kielillä oppilaiden elämässä on. Erityisesti kiinnostuksen kohteena toimii toisen kotimaisen kielen ruotsin asema ja oppilaiden suhtautuminen ruotsin kieleen. Oppilaiden oma kokemus on avaintekijänä ja tutkimus lähtee heidän näkökulmastaan ja kokemusmaailmastaan. Tutkimuksen painopiste on oppilaiden yksilöllisessä kokemuksellisuudessa…
How Wild Can It Get? Managing Language Learning Tasks in Real Life Service Encounters
2019
This chapter explores how experientially based pedagogical activities that involve participation in real life service encounters provide occasions for developing L2 interactional competence. The data comprises novice L2 students’ self-recorded interactions in service settings and videorecordings of classroom planning activities and de-briefing discussions, where the students reflect on their experiences. The analysis traces what kinds of occasions for learning arise as the students move between the classroom and the real-world service settings. The findings show that the different phases of the task complement each other in supporting the development of interactional competence. The prepara…
El alcoholismo, la toxicomanía y las perturbaciones mentales como causa de separación matrimonial
2003
El alcoholismo, la toxicomanía y las perturbaciones mentales constituyen causas legales de separación matrimonial, permitiendo al cónyuge no enfermo solicitar al juez que decrete la separación. Sin embargo, para que el juez la conceda es necesario que quede acreditado que el interés del otro cónyuge o el interés de la familia exige la suspen¬sión de la convivencia. También puede ser causa de nulidad matrimonial e, indirecta¬mente, causa de divorcio.