Search results for " tecnologia."
showing 10 items of 1339 documents
MORGANTINA IL TEATRO ELLENISTICO: STORIA E RESTAURI
2011
Morgantina è un sito indigeno ellenizzato che si trova nell’umbilicus Siciliae, molto noto per alcuni eccezionali reperti che, prima trafugati, sono stati esposti in alcuni musei stranieri ed oggi rientrati per essere esposti al Museo di Aidone. Del suo Théatron, costruito alla fine del sec. IV a. C., il volume presenta un consuntivo scientifico allo scopo di riepilogare il recente intervento di restauro in un quadro di lettura più generale; una sorta di cartella clinica, in cui sono riportati lo scavo archeologico, i vari reports e il primo restauro degli anni Sessanta, operato dalla Missione Archeologica Americana della Princeton University, lo stato del Théatron prima del recente interve…
Trasformazione e riuso dei vuoti urbani: quattro casi studio
2016
Il saggio indaga su contesti urbani consolidati che contengono tracce appartenenti a preesistenze industriali oggi in disuso, ma che costituiscono originali trame urbane da reinterpretare, riqualificare e riutilizzare in alternativa alle nuove espansioni. Il progetto della trasformazione/cambiamento diviene una metodologia d’intervento che richiede approcci, sensibilità e strumenti adeguati, che vanno dal controllo urbanistico a quello architettonico, dalla verifica tecnologica e strutturale a quella sociale e fruitiva. Sono presentate alcune ipotesi progettuali che illustrano come la valorizzazione delle aree industriali possa contribuire alla rigenerazione urbana di interi quartieri o por…
The effects of water absorption and salt fog exposure on agglomerated cork compressive response
2022
The replacement of synthetic foams with agglomerated cork in sandwich composites can meet the increasing environmental concerns. Its peculiar morphology and chemical composition lead to outstanding dimensional recovery that endorsed a broad investigation of its compressive behavior. The knowledge of neat material response is fundamental to obtain a reliable design dataset, but it is necessary to consider all the environmental factors (water, moisture and sunlight) that significantly modify material mechanical properties. In view of this, the present work investigates the effect of distilled and seawater absorption and salt fog exposure on the compressive behavior of two agglomerated corks w…
Forest Road Planning, Construction and Maintenance to Improve Forest Fire Fighting: a Review
2019
Forest roads play a key-role in fire fighting activities. In fact, all ground-based activities are strictly related to the presence of forest roads as access to fire edge. In spite of this important role, forest roads are often planned and built without considering their use in fire fighting, and this also occurs in literature, where few studies are dedicated to the importance of forest roads in fire fighting. A well-developed and well-maintained forest road network is the answer to different needs in fire management. The objective of this review is to clarify basic principles for obtaining efficient road network also for fire fighting, collecting, defining and resuming the main roles, the …
Prestazioni di accessibilità nei siti archeologici: criteri per la valutazione e miglioramento
2021
Knowledge of the heritage on the part of the visitor is the premise for its conservation and enhancement. In order to appreciate the identity of the site completely, the visitor must enter into an active relationship with the heritage, in a multi-sensorial, safe and comfortable manner. But is this always the case? Archaeological heritage is considered a sort of limited case, in which the general critical conditions of accessibility are emphasized. For this reason, this research, applying a systemic approach, is geared towards evaluating whether, in some of these sites, selected as case-studies, the solutions for accessibility comply with technical and performance features in accordance with…
L'accessibilità della città storica: aspetti gestionali tra specificità e strategie unitarie
2013
Il superamento della nozione di centro storico impone un ripensamento sulle posizioni consolidate durante gli scorsi decenni, a partire dalla verifica delle stesse idee di centralità e storicità. Le porzioni di città che hanno acquisito un valore storico e culturale non sono circoscrivibili entro precise delimitazioni fisiche o di datazione: ciò rende opportuno un approccio che riesca a tener conto delle loro specificità, all’interno di un quadro più ampio di gestione che comprenda l’intero ambiente costruito e che sia orientato verso strategie realistiche e orientate al lungo termine, all’interno delle quali anche l’istanza della conservazione delle parti storiche risulti più efficace. Leg…
Architettura d'acqua. Water in innovtion building
2009
Nanotechnology and earth construction: the mechanical properties of adobe brick stabilized by Laponite nanoparticles
2014
The contribution describes the experimental analysis for the improvement of the mechanical properties of samples of earth with the addition of Laponite nanoparticles. Were made two types of samples: the first consisting of soil, sand and water; the second consisting of soil, water, sand and Laponite nanoparticles. The operations performed were: chemical analysis of soil and sand; preparation of samples; Scanning Electron Microscope (SEM) observation of samples for the distribution of the elements, especially the Laponite nanoparticles; testing of compression strength and flexural strength of two types of samples; comparisons of the resulted of the mechanical tests. The improvement of the me…
Age slowing down in detection and visual discrimination under varying presentation times
2017
[EN] The reaction time has been described as a measure of perception, decision making, and other cognitive processes. The aim of this work is to examine agerelated changes in executive functions in terms of demand load under varying presentation times. Two tasks were employed where a signal detection and a discrimination task were performed by young and older university students. Furthermore, a characterization of the response time distribution by an exGaussian fit was carried out. The results indicated that the older participants were slower than the younger ones in signal detection and discrimination. Moreover, the differences between both processes for the older participants were higher,…
Evaluation of aging behavior under salt-fog spray conditions of green sandwich structures
2018
In this paper, the aging resistance of sandwich structures made with cork agglomerate as core and flax-reinforced polymeric laminates as face sheets was investigated for the first time. In order to evaluate their durability in a hostile environment, a sandwich plate was manufactured by vacuum bagging technique and aged under salt-fog spray conditions, according to ASTM B 117 standard. The evolution of the sandwich mechanical properties during the aging exposition was analyzed by carrying out quasi-static flexural tests and Charpy impact tests both on unaged specimens and on specimens aged for 10, 25, and 60 days, respectively. The quasi-static experimental results showed that despite the sa…