Search results for "paint"
showing 10 items of 605 documents
Buzzati's Miracles between writing and painting
2012
L’analisi dell’opera doppia I Miracoli di Valmorel di Dino Buzzati, intesa come il miglior esito della sua produzione pittorica e letteraria, ha permesso una riflessione sulle possibilità espressive e combinatorie dei testi visivo e verbale e sulla negoziazione delle frontiere tra i due media. Il racconto a cornice dell’opera ricostruisce l’antefatto della creazione artistica: l’immaginario ritrovamento di alcune tavole di ex voto, in un santuario dedicato a Santa Rita in Val Morel, fornisce l’occasione per riprodurre i 39 dipinti che nell’edizione iconotestuale vengono accompagnati da altrettanti micro-racconti dello stesso autore. Le combinazioni che Buzzati produce, per giustapposizione …
La finestra e lo specchio. Alberti e la pluralità dei punti di vista
2020
Nel De pictura, paragonando la pittura prima a una finestra e poi a uno specchio, Leon Battista Alberti sottolinea l’importanza del punto di vista per la rappresentazione artistica. Nelle Intercenales, che costituiscono il contraltare giocoso del trattato, il cambiamento di punto di vista determina una diversa visione del mondo. Attraverso riferimenti testuali ad entrambe le opere, il saggio dimostra che, sia come teorico dell’arte sia come letterato, Alberti ha esaltato la «forza del vedere», il rifiuto di una visione monodirezionale e l’importanza di discernere e valutare differenti prospettive, lasciando ai posteri un insegnamento coerente di natura sia etica sia estetica. In his work De…
Un monastero per due Ordini: il SS. Salvatore di Corleone
2019
Al patrimonio figurativo, plastico e scultoreo della chiesa del SS. Salvatore di Corleone per lo più ormai noto da annotazioni bibliografiche o documentarie si aggiunge quello altrettanto ricco di arte decorativa. Di quest’ultimo, nonostante le numerosissime dispersioni, si individuano importanti opere, alcune delle quali esposte alla Mostra Sacra et pretiosa In addition to the figurative, plastic and sculptural heritage of the church of SS. Salvatore di Corleone, mostly known from bibliographical or documentary annotations, there is also a wealth of decorative art. Of the latter, despite the numerous dispersions, there are important works, some of which are exhibited at the Mostra Sacra et…
Eroded enamel rehardening using two intraoral appliances designs in different times of salivary exposure.
2019
Background The aim of this study was evaluated the eroded enamel rehardening potential using upper palatal and lower buccal removable appliances in different times of salivary exposure (30 min, 1h, 2h, 12h) after a single erosive challenge event. Material and Methods After initial surface hardness evaluation, bovine enamel blocks were eroded in vitro (0.01 M hydrochloric acid, pH 2.3, 30 seconds), selected (n = 160) and randomly assigned to the two appliance designs and twenty volunteers. Four enamel blocks were inserted in each removable appliance. On the in situ phase, the volunteers were instructed to use the upper palatal and lower buccal appliances simultaneously for 12 nonconsecutive …
Effect of postbleaching application of an antioxidant on enamel bond strength of three different adhesives
2010
Objectives: The aim of this study was to compare the shear bond strength (sbs) of three different adhesives on bleached enamel immmmediately after bleaching, bleached/delayed for 1 week, and bleached/applied antioxidizing agent. Study Design: The enamel surfaces of 144 freshly extracted incisors without any caries and restorations were flattened and divided into 12 groups. The following adhesives were investigated: Optibond FL (OFL) (three-step etch&rinse), Optibond Solo Plus (OSP) (two-step etch&rinse), Optibond All-in-One (OA) (one-step self-etch), (Kerr, Orange, USASA). Unbleached enamel groups were prepared as negative controls. The remainder surfaces were bleached with 20% Opalescent P…
Effect of antioxidants on the shear bond strength of composite resin to enamel following extra-coronal bleaching
2019
Background Recently patients need faster treatments, and delaying restoration is not possible following bleaching treatment. The purpose of this study was to determine the effect of antioxidants, namely 10% sodium ascorbate, 10% alpha-tocopherol, 10% green tea and 10% Aloe vera extract on the shear bond strength of composite resin to enamel following extra-coronal bleaching using 40% hydrogen peroxide. Material and Methods Seventy premolars were randomly assigned into 7 groups of 10 each. Group 1: bleaching treatment and no antioxidants application. Group 2: composite was built-up immediately after bleaching. Group 3: bleached specimens received composite build-up delayed by 2 weeks. Group …
Direct infusion mass spectrometry as a fingerprint of protein-binding media used in works of art
2005
A direct infusion mass spectrometry method for the characterization of proteinaceous glues from binding media used in pictorial works of art prior to conservation or restoration treatment is proposed. Amino acids are released by acid hydrolysis and dissolved in a mixture of acidic water and ethanol. This mixture is directly infused into a mass spectrometer without any derivatization. The mass spectrometer is operated in positive ion electrospray mode (ESI-MS) to yield [M+H]+ ions for the amino acids. Relative amounts of each amino acid are calculated for each protein (beef and porcine gelatines, albumin, casein and egg). The analyzed proteins were satisfactorily distinguished. The method is…
What we look at in paintings: A comparison between experienced and inexperienced art viewers
2016
How do people look at art? Are there any differences between how experienced and inexperienced art viewers look at a painting? We approach these questions by analyzing and modeling eye movement data from a cognitive art research experiment, where the eye movements of twenty test subjects, ten experienced and ten inexperienced art viewers, were recorded while they were looking at paintings. Eye movements consist of stops of the gaze as well as jumps between the stops. Hence, the observed gaze stop locations can be thought as a spatial point pattern, which can be modeled by a spatio-temporal point process. We introduce some statistical tools to analyze the spatio-temporal eye movement data, a…
Effect of disinfecting the cavity with chlorhexidine on the marginal gaps of Cl V giomer restorations
2017
Background Considering the effect of cavity disinfecting agents on the bonding and sealing ability of restorations bonded to dentin, the aim of this study was to evaluate the effect of chlorhexidine (CHX) disinfecting agent on the marginal gaps of Cl V giomer restorations. Material and Methods Cl V cavities were prepared on the buccal surfaces of 60 sound bovine permanent incisors in this in vitro study, with the occlusal and gingival margins in enamel and dentin, respectively. The teeth were randomly divided into two groups (n=30). The teeth in groups 1 and 2 were restored without and with the use of the disinfecting agent in the cavity, respectively, before applying the adhesive. BeautiBo…
THE PAINTED CEILING OF THE NAVE OF THE CAPPELLA PALATINA IN PALERMO: AN ESSAY ON ITS GEOMETRIC AND CONSTRUCTIVE FEATURES
2010
Il testo illustra gli esiti di una ricerca sulle matrici geometriche e costruttive del soffitto il legno che copre la navata centrale della Cappella Palatina di Palermo. L’opera, già oggetto di approfonditi studi relativi ai temi iconografici delle pitture che la decorano, viene indagata tramite un accurato rilievo condotto con tecniche laser scanning al fine di risalire alle matrici geometriche del progetto; tale indagine viene condotta tenendo in adeguata considerazione la struttura tridimensionale del manufatto, basata sulla tecnica dei muqarnas. Al termine dello studio viene definita una ipotesi che evidenzia una stretta correlazione fra il tracciato regolatore che ne definisce l’impian…