1,721,186 research outputs found
la voce “Storia e Tecnica del Restauro”, inserita all’interno del lemma “Restauro”
No full textLa Piccola Treccani Dizionario Enciclopedico Supplemento, II volume, Istituto d
Che importanza viene data agli insegnamenti del SSD CHIM/12 nella formazione di scienziati della conservazione, conservatori e restauratori
No full textVengono presi in esame: i corsi di laurea triennali, attivi negli Atenei italiani, delle classi L-1 Beni culturali e L-43 -Tecnologie per la conservazione e il restauro dei beni culturali, i corsi di laurea magistrale della classe LM-11 - Scienze per la conservazione dei beni culturali. Particolare attenzione verrà rivolta alle nuove istituzioni formative accreditate allo svolgimento dei corsi di formazione dei restauratori, impiegando la classe di laurea a ciclo unico LMR/02 - Conservazione e restauro dei beni culturali.
Da questa indagine si vuole mettere in evidenza la presenza degli insegnamenti del settore scientifico disciplinare CHIM/12 – Chimica dell’Ambiente e dei Beni Culturali nella offerta formativa degli atenei italiani e delle istituzioni accreditate
Enzymes as tools for conservation of works of art
Full text linkSince the early 1970 s, enzymes have grown more and more popular among conservators, initially in pa- per and gradually also in other specialties. Hydrolytic enzymes, or hydrolases, have been most commonly used, for their ability to catalyze hydrolysis of proteinaceous-, polysaccharide- and lipid-based materials that often alter the appearance and the structure of works of art. This action enables the removal of the disturbing materials under milder experimental conditions than would normally be required with more traditional approaches, like organic solvents or alkaline media. Throughout four decades, our knowledge on the mode of action and on the parameters that regulate enzyme activity has steadily made significant progress. Meanwhile, the availability of pure enzymes has also enormously increased. Enzymes can thus be considered useful materials and predictable methods for operators in many disciplines of conservation. This paper reviews the development of the use of enzymes in conservation and presents the state of the art of the current knowledge
Organic materials in the wall paintings in Pompei: A case study of Insula del Centenario
No full textThe present research concerns the Roman wall paintings preserved at Insula del Centenario (IX, 8), the important Pompeian block situated in the Regio IX, along Via di Nola.
The aims of this research are two: to verify the presence of lipidic and proteinaceous material to spread the pigments, and to identify organic matter in painting materials owing to previous restoration works. The samples collected from the wall paintings of different rooms have been investigated by Fourier Transform Infrared Spectroscopy (FT-IR), and Gas Chromatography/ Mass Spectrometry (GC/MS).
The analytical results show that these Roman wall paintings were realized without the use of lipidic and proteinaceous materials, supposedly in fresco technique. Moreover, it was detected that wax, egg, and animal glue were used in previous restoration works for protective purpose and to restore the wall paintings to their original brilliant colours
An analytical study on an early twentieth-century Italian photographs collection by means of microscopic and spectroscopic techniques
No full textItalian photographs, dated between 1890 and 1930, on simple or treated paper support, chosen to be faithful to Italian photographic tradition of those times, were studied with non-invasive techniques. A first investigation by optical microscopy in reflected light put in evidence the surface peculiarity of each different photo types, characteristics and deterioration of the fibres and vegetable biodeteriogens morphology. The study of coatings and supports composition, carried out with Fourier transform infrared micro-spectroscopy in attenuated total reflectance, allowed to recognize the presence of proteinaceous binder and inorganic salts. Moreover, stereomicroscopy, optical microscopy (in reflected and transmitted light) and scanning electron microscope were used for more detailed study of biodeterioration phenomenon. These instrumental techniques have been useful to evaluate cause of chromatic differences on the surface, allowing the identification of different fungi species, and, particularly, a class of them never documented on photographic materials has been detected. Materials identification, deterioration knowledge and formulation of hypothesis on the causes of deterioration are of primary importance to act the better choice for adequate preservation and conservation process.
This study shows how non-invasive techniques are completely applicable on photographic materials, field in which diagnostic analyses are still not fully overworked
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