Search results for " valori"
showing 10 items of 214 documents
SITES ARCHÉOLOGIQUES ET TOURISME CULTUREL INTÉGRÉ/SITI ARCHEOLOGICI E TURISMO CULTURALE INTEGRATO
2013
Il tema della comunicazione dei beni archeologici in questa sede vuole tentare di comprendere se le nuove tecnologie di comunicazione (ITC) possono diventare parte integrante del processo di comprensione/comunicazione del reperto e del sito nel suo complesso fisico e paesaggistico. In tal ottica la progettazione tecnologica può essere strumento per l'ambientazione del percorso museale, dove le tecnologie di comunicazione non devono risultare invasive e/o preponderanti con grandi istallazioni, ma devono piuttosto supportare il visitatore nel percorso di conoscenza del sito. La convinzione è che le nuove tecnologie se ben inserite ed integrate nel percorso di visita, e se capaci di coinvolger…
Integrazione, espressioni delle differenze: una ricerca a Palermo
2018
Il fenomeno migratorio verso l’UE negli ultimi decenni ha rivelato la debolezza dei modelli di integrazione. Sul piano sociale non si è riusciti a governare un cambiamento di convivenza oggi improcrastinabile. Le comunità di immigrati popolano le nostre città lavorano, consumano, si incontrano, e non smettono di praticare le proprie espressioni religiose e culturali di origine. Quale ruolo gioca l’espressione delle differenze, modellate dall’adattamento, nei processi di integrazione locale? Queste dinamiche sono state analizzate in una ricerca qualitativa condotta a Palermo, i cui principali risultati sono presentati in questo saggio. The migratory phenomenon to the EU in recent decades sho…
Il liberalismo nell'età dei conflitti
2008
Il mondo occidentale e' percorso da due grandi generi di conflitto: il primo riguarda la sfera dei valori, il secondo quella degli interessi. Si tratta di conflitti che il liberalismo ha difficolta' ad affrontare, nonostante esso veda nella competizione di idee e nella concorrenza di interessi le forze motrici del progresso. Oggi, infatti, queste aspre tensioni coinvolgono le stesse regole della democrazia liberale. Ne sono sovente drammatico esempio le societa' multiculturali, la ricerca scientifica e i processi di globalizzazione. Gli Autori, introducendo una sfera della politica non necessariamente statuale, disegnano una forma di liberalismo conservatore che a una societa' nutrita di un…
Coffee biowaste valorization within circular economy: an evaluation method of spent coffee grounds potentials for mortar production
2021
Abstract Purpose Spent coffee grounds (SCG) are biowastes extensively generated within the coffee supply chain. Nowadays, their disposal represents an increasing environmental concern due to its toxicity and organic nature. With the estimated increase of coffee production and consumption in the upcoming years, there is an imperative need to find a proper reverse option, along with a novel industrial application, which allows for the valorization of this coffee by-product within a circular economy perspective. This study aims at investigating a potential reuse of spent coffee grounds to produce novel construction materials to be used for sustainable buildings. Methods After having illustrate…
High purity recovery of magnesium and calcium hydroxides from waste brines
2021
Direct disposal of concentrate brines, generated by many industrial sectors, causes serious environmental concerns. An industrial sector that produces high concentrate brines is softening water industry, in particular during the regeneration of ion exchange resins. These brines are mainly rich in sodium, magnesium and calcium chlorides, thus, their regeneration, by removal/recovery of magnesium and calcium, can be a valuable option to turn the brine into a source of minerals and reduce disposal costs and environmental concerns. In this regards, one of the goals of EU-funded ZERO BRINE project is to develop a treatment chain for the valorization and regeneration of spent brines from water so…
Thermal kinetics for the energy valorisation of polylactide/sisal biocomposites
2018
[EN] The thermal stability and decomposition kinetics of PLA/sisal biocomposites was discussed to evaluate the suitability of their use in energy recovery processes such as pyrolysis and combustion. The influence of the addition of sisal up to 30%wt, the presence of coupling agent, and the atmosphere of operation, i.e. inert or oxidative was discussed by means of multi-rate linear non-isothermal thermogravimetric experiments. All biocomposites showed a mean high heating value of 15 MJ/kg indicating their suitability for energy recovery processes. The thermal requirements of PLA/sisal decomposition were assessed in terms of onset decomposition temperature and apparent activation energy. A mi…
Material valorisation of amorphous polylactide. Influence of thermo-mechanical degradation on the morphology, segmental dynamics, thermal and mechani…
2012
[EN] This paper reports the effects of multiple mechanical recycling on the structure and properties of amorphous polylactide (PLA). The influence of the thermo-mechanical degradation induced by means of five successive injection cycles was initially addressed in terms of macroscopic mechanical properties and surface modification. A deeper inspection on the structure and morphology of PLA was associated to the thermal properties and viscoelastic behaviour. Although FT-IR analysis did not show significant changes in functional groups, a remarkable reduction in molar mass was found by viscometry. PLA remained amorphous throughout the reprocessing cycles, but the occurrence of a cold-crystalli…
L'evoluzione del mercato fondiario in Sicilia
2009
Evaluation of the Purity of Magnesium Hydroxide Recovered from Saltwork Bitterns
2022
Magnesium has been listed among the 30 critical raw materials by the European Union. In recent years, many green and sustainable alternative Mg2+ sources have been sought to satisfy the EU’s demand and to avoid mineral ore consumption. In this context, saltwork bitterns, the by-products of solar sea salt production, have attracted much attention thanks to their high Mg2+ concentrations (up to 80 g/L) and low Ca2+ and bicarbonate contents (<0.5 g/L). Although investigations on Mg2+ extraction from bitterns in the form of Mg(OH)2(s) have already been performed, product purity has never been properly addressed. Mg(OH)2(s) is a chemical compound of great interest and extensive utility in num…
Bivalve mollusks shells valorisation and recycling: market potentiality and novel building products
2023
Construction is a fundamental driver of the world economy, recognized as a sector that generates a great contribution to the social and economic development. At the same time, it shows an enormous environmental impact through an unstoppable consumption of non-renewable resources, a high energy consumption, and an associated atmospheric emission of pollutant. Consequently, the research and development of novel and green production processes and sustainable building materials is of paramount importance. The sustainability of materials and production processes could be improved by enhancing and reusing wastes from various industrial sectors. In this paper, the fishery sector will be analysed, …