Search results for " TECNOLOGIA"
showing 10 items of 1359 documents
Video and Emotionality in the Social Network Sites during Elections : the general election campaign of April 2019 in Spain.
2022
This is a study on videos generated or shared on Facebook, Twitter and Instagram by the main political parties’ candidates during the general election campaign for the government of Spain in April 2019. Using a quantitative analysis and a statistical approach, the means of audiovisual persuasion used by the candidates are analysed, addressing their emotional nature. It is shown that the traditional political parties in their campaigns use audiovisual formats that are less emotional than those of the new emerging parties. Secondly, a clear difference can be seen among the leaders in their use of audiovisual formats to convey their messages.
From Conservation to Revitalization. Ambiguous and Critical Conditions in the Heritage Conservation Experiences of Erice
2022
The plans and the evolutionary trends of policies and practices implemented in Erice old town, in the south of Italy, in the western part of Sicily, can be considered a case study of total conservation as highly representative of Italian urban planning of the last 60 years. This paper aims to deal with the actual problems and the perspective of sustainable development of the historical centre of Erice, by adopting the approach of urban and territorial regeneration. This paper also highlights the historical and cultural context in which the Gubbio Charter (issued in 1960) is affirmed; i.e. the most appropriate approaches to historical urban centres; what we can learn from Erice’s integral co…
PATRIMONIO CULTURALE E MARGINALITÀ. LA PANDEMIA DELLA SOLITUDINE. QUALE RIGENERAZIONE?
2021
We start from the assumption that culture is what man assimilates, modifies and transforms, to which he contributes with his work, adding to and preserving the historical heritage. The sum of heritage diversities and values gives cultural uniqueness to the coexistence of the communities that make up each territory. Our main task, the task of each one of us who with an educated eye understands the meaning and value of heritage, must be directed towards committing ourselves not only to be actors in the present historical moment in which such testimonies survive, but to be authors of practices of preservation and enhancement. We cannot learn culture just by looking at its symbols, but by livin…
Nanotechnology for Cultural Heritage
2014
The conservation science is one of the most complex topics in the materials science as it requires interdisciplinary expertise ranging from the architecture, the technology of materials to the advanced analytical and physical chemistry. However, the recent development has shown that the complex tasks of the conservation of the cultural heritage can be solved very effectively using novel nanomaterials and nanotechnology methods.
Compatibility between traditional ground layers and 3D printing materials
2018
Starting point of this work was the restoration of a Panel Painting depicting the Adoration of the Shepherds with a Saint Bishop, by an unknown author, stored in the Galleria Regionale della Sicilia di Palazzo Abatellis, in Palermo. It was decided to integrate a missing angular decorative element of the painting’s frame in order to restore the integrity of the frame by reverse engineering and 3D printing. Reintegration was feasible as the frame has a modular decorative pattern and the remaining three corners were available. Reverse engineering and 3D printing techniques have been used in order to find a solution according to the principles of recognition, reversibility and compatibility. Mo…
A Portable Dynamic Laser Speckle System for Sensing Long-Term Changes Caused by Treatments in Painting Conservation
2018
[EN] Dynamic laser speckle (DLS) is used as a reliable sensor of activity for all types of materials. Traditional applications are based on high-rate captures (usually greater than 10 frames-per-second, fps). Even for drying processes in conservation treatments, where there is a high level of activity in the first moments after the application and slower activity after some minutes or hours, the process is based on the acquisition of images at a time rate that is the same in moments of high and low activity. In this work, we present an alternative approach to track the drying process of protective layers and other painting conservation processes that take a long time to reduce their levels …
On the mechanical behavior of BFRP to aluminum AA6086 mixed joints
2013
The aim of this work is to analyze the possibility to join aluminum alloy AA6086 and composite laminates reinforced with basalt fibers, an innovative material which use is growing in several applications as an alternative to glass fibers. To this goal, three joining techniques were investigated: mechanical by Self Piercing Riveting (in the next called SPR), adhesive by co-curing technique and mixed in which the joining techniques (i.e. adhesive and mechanical) were combined. Two manufacturing technologies (i.e. hand lay-up and vacuum bagging) were used both to produce composite substrates and to realize co-curing adhesion between the substrates to be joined. Mixed joints were realized by in…
Bilayer biodegradable films prepared by co-extrusion film blowing: Mechanical performance, release kinetics of an antimicrobial agent and hydrolytic …
2020
Abstract Bilayer biodegradable, eco-friendly films were prepared by co-extrusion film blowing, coupling polylactic acid (PLA) and Bio-flex ® (BIO). Furthermore, in the PLA layer, carvacrol (CRV) was added as a natural antimicrobial additive, whereas a nanoclay (D72T) was integrated to protect CRV from volatilization and to modulate release. The materials were analyzed by morphological, chemical-physical, mechanical testing. Furthermore, CRV release and degradation tests were performed. The results pointed out that coupling the two matrices allows gathering the stiffness of PLA with the ductility of BIO. Furthermore, the interlayer adhesion is promoted by CRV. D72T exerts a key-role in avoid…
On the response of flax fiber reinforced composites under salt-fog/dry conditions: Reversible and irreversible performances degradation
2022
Abstract Despite their scarce resistance to humid or wet conditions, natural fiber reinforced composites (NFRCs) seem to be able to partially recover their performances under discontinuous exposition to marine environment. To investigate this peculiarity, flax fiber reinforced composite was at first subjected to salt-fog spray condition at 35 °C for 15 and 30 days, respectively, and then stored in ‘‘dry” condition (i.e., 50% R.H. and 22 °C) between 0 and 21 days. The performances evolution was evaluated through flexural tests, water uptake and contact angle measurements. Moreover, the morphology of fractured mechanical samples was examined by using 3D optical microscope and scanning electro…
Alterazione e degrado dei materiali lapidei naturali
2008
The poor outcome of numerous restorations on artefacts of historical and artistic interest, after a few years, has shown how indispensable an accurate preliminary assessment of the conservation problems of the artefact is for the purposes of the reliability of the intervention. The correct diagnosis of the causes upstream of the phenomena of alteration and degradation, whether physiological or pathological, becomes the fundamental prerequisite for choosing any conservative or restorative intervention. From this point of view, in order to provide the reader with a useful tool for investigation and recognition in the field, the text illustrates the phenomena of alteration and degradation that…