Search results for " Wooden"
showing 10 items of 37 documents
Wooden churches in Lithuania : analysis of failures and degradations, guidelines for restoration
2016
La maggior parte degli edifici di culto in legno lituani versa in una penosa condizione di degrado, poiché le comunità locali non sempre rivolgono la dovuta attenzione ai fenomeni di dissesto e degrado e spesso le competenze tecniche capaci di salvaguardare tale patrimonio sono andate perdute. Le cause più frequenti di questo stato di fatto derivano da una inadeguata manutenzione (sia ordinaria che straordinaria), dal deterioramento del legno (ascrivibile per lo più ad infestazioni di funghi e insetti) o da dissesti e stati deformativi delle strutture dovuti ad errori nella tecnica costruttiva o all’errato dimensionamento delle sezioni costitutive degli elementi di base delle singole unità …
La ricostruzione dell'abside in alcuni esempi della seconda metà del XVI secolo a Palermo
2015
Il contributo ha l’obiettivo di studiare alcuni casi di ricostruzione dell’abside eseguiti in edifici chiesastici palermitani nella seconda metà del XVI secolo. Si tratta delle chiese di San Sebastiano, San Francesco d’Assisi e San Martino delle Scale (all’interno dell’omonima abbazia), in cui, nella seconda metà del Cinquecento, per motivi liturgici, l’abside originaria viene “trasformata”, in un’abside “piatta”, al fine di potervi inserire il Coro ligneo. Il nuovo posizionamento del Coro, in conseguenza della Riforma tridentina - problematica centrale nell’Europa di età moderna – suscita, anche in questi casi palermitani, dibattiti e controversie. Il cambiamento della forma dell’abside de…
Electronic paramagnetic resonance power saturation of wooden samples
2009
The deterioration of wood used for artifacts of artistic interest involves the production of different free radicals from the macromolecules of the wooden matrix (cellulose, lignin, and hemicellulose). Among the techniques able to provide information about these free radicals, the contribution of electronic paramagnetic resonance (EPR) can be very valuable. In this paper, the study of EPR signals (with g 2) of both modern and ancient wooden taxa was undertaken in order to analyze some features of the free radicals in natural wood. In particular, we have studied the microwave power saturation behaviors of seasoned wooden samples from ten species, and we have found remarkable differences betw…
Polyphasic Characterization of Microbiota of “Mastredda”, a Traditional Wooden Tool Used during the Production of PDO Provola dei Nebrodi Cheese
2021
The biofilms of the wooden tables used for the acidification of the curd were investigated for PDO Provola dei Nebrodi cheese, a traditional stretched cheese made in eastern Sicily (southern Italy) from raw cows’ milk. To this purpose the wooden tables of four dairy facilities were analysed for their microbiota by scanning electron microscopy (SEM) analysis and a combined culture-independent and -dependent microbiological approach. SEM inspection showed an almost continuous biofilm formation. MiSeq Illumina analysis identified 8 phyla, 16 classes, 25 orders, 47 families and 50 genera. Corynebacterium, Bifidobacterium and lactic acid bacteria (LAB) were detected in all samples. In particular…
Issues Related to the Restoration of Mirrors of the Wooden paliotto della chiesa del Santissimo Crocifisso all’Albergheria, Sicily (Italy)
2017
ABSTRACTIn this work, the decision-making process involved in the restoration of the eighteenth century paliotto ligneo (wooden altar frontal) della chiesa del Santissimo Crocifisso all’Albergheria of Palermo is presented. Earlier research concerning mirror restoration was based on only a few case studies and the proposed techniques were not suitable for the artwork here. As a consequence, it was necessary to re-examine theories and protocols of modern restoration to plan an appropriate intervention of the altar frontal. Since in this artwork the role of mirrors is not to give back images, as usual, but rather to create special light effects and play of lights, this work aims to find an app…
Architetture lignee per lo spettacolo tra XVII e XVIII secolo a Palermo (Theatral wooden architectures in Palermo during XVIII and XIX centuries)
2016
La realizzazione di architetture per lo spettacolo, stabili o temporanee, interamente realizzate in legno fu una consuetudine sette-ottocentesca diffusa sia in molte grandi città europee sia in centri di minori. Anche a Palermo anfiteatri, teatri-circo e casotti occuparono anche a lungo le piazze del centro storico e grandi edifici "contenitori" pubblici o di facoltosi cittadini, ospitando giochi equestri, spettacoli con animali esotici. La connotazione temporanea suggeriva l'uso del legno a costruttori e progettisti: realizzate rapidamente, potevano con semplicità essere smontate e riproposte altrove. Sebbene si trattasse di "architetture provvisorie", era necessario che fossero non solo s…
Study and restoration of a wooden Crucifix in the Monastery of S. Caterina D’Alessandria in Palermo, Italy
2022
This article presents the analyses and work on the iconographic subject related to a wooden crucifix of an unknown author from the S. Caterina monastery, from the first half of the 17th century. This study focuses on the stylistic comparison between this artefact and others crucifixes of the same historical period. Alongside, an in-depth description of its conservative history and restoration work on the artefact is reported
Il monastero e la chiesa del Carmine Maggiore di Palermo: gli argenti sacri
2019
Il saggio esamina la statua lignea rivestita in lamine d’argento della Madonna del Carmelo e alcune suppellettili liturgiche custodite nella chiesa del Carmine Maggiore di Palermo. Si tratta di opere realizzate da artisti siciliani tra il Settecento e l’Ottocento. Collocato nell’antico mercato storico di Ballarò, la chiesa, con annesso convento dei PP. Carmelitani, custodisce opere che testimoniano la raffinata committenza dell’Ordine. Tra queste le tavole dello smembrato polittico in cui vi lavorarono Pietro Ruzzolone e Antonello Crescenzo , la Madonna del Carmelo firmata dal pittore Tommaso De Vigilia e altre opere eseguite da Antonello Gagini, Pietro Novelli, Giacomo e Giuseppe Serpotta.…
Terremoto e architettura storica. Palermo e il sisma del 1726.
2015
On September 1st 1726 Palermo was hit by a violent earthquake. Although it did not bring about the destruction of the city, the earthquake caused widespread and extensive damage to the architectural heritage. The local insti- tutions carried out a series of actions involving representatives of the technical culture. These actions affected the subsequent appearance of the urban pattern and influenced the construction methods of the time. Crossing the data taken from chronicles of the time, from maps produced after the earthquake and above all copious archival documents, the research aims to reconstruct the state in which Palermo was after that tragic event, highlighting a number of aspects. …
Microbiological characterization of the biofilms of wooden shelves used for ripening of traditional raw milk cheeses produced in Sicily (South Italy).
The production of artisanal Sicilian cheeses is generally carried out with wooden equipment. For centuries, wood has been the main material used in cheese making due to its availability, low cost and resistance over time. Among dairy wooden equipment, the wooden vat used for milk curdling plays a role of paramount importance to inoculate the bulk milk with desired lactic acid bacteria (LAB) responsible for the acidification of the curd. In the last few years, the biofilms associated to these containers have been object of study of different research groups, mainly Italian and French, but so far, very little is known about the microbiological characteristics of the wooden shelves used for ch…