102,272 research outputs found
Botticelli /
No full text"Second edition, revised, 1905 ... reprinted 1907"."Catalogue of some of the more important works of Botticelli's school and followers" : p.159-164."Catalogue of the works of Botticelli": p.153-158.Bibliography: p.xiii-xiv.Mode of access: Internet
Study of materials, execution technique and deterioration processes at the Temple of Mut
No full textThe restoration activities on the mural paintings in the Temple of Mut were helped by the scientific study of their constituent materials and execution technique. The analysis also highlighted on-going and past deterioration processes, which altered the paintings visibility. The study was mostly focused on room B305 and, minorly, on room B303. From the micro-sampling, done by the restorers between 2014 and 2020, after a careful examination of surfaces, polished cross sections were prepared and analysed by optical microscopy (OM), under visible and UV light, and scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDS).
In cross sections where Egyptian blue might be found, visible induced luminescence (VIL) was also performed. Some micro-fragments were also analysed by micro-Fourier transform infrared spectroscopy (μ-FTIR). One mortar sample was also analysed by thermogravimetric analysis (TGA) to quantify its composition. Finally, binders in the pictorial layers were also tentatively characterized by gas chromatography-mass spectrometry (GC-MS)
The five paintings of the Adoration of the Magi by Sandro Botticelli /
No full textThe thematic unit formed by the five versions of The Adoration of the Magi painted by Sandro Botticelli provide a special opportunity for studying his artistic development. An investigation of these five paintings shows that Botticelli aimed toward a goal of perfecting compositional techniques. He systematically made alterations to these works in order to create special point of view effects.This thesis outlines the general trends in art with respect to the Adoration theme and then concentrates on a demonstration of Botticelli's attempts at correlating compositional devices and the unique features developed with respect to spectator involvement. This selected study allows for a careful examination which spans the artistic career of Sandro Botticelli. As a result, it can be shown that it was perhaps Botticelli, rather than Leonardo da Vinci, who was primarily responsible for the development of a compositional format which became a foundation stone of High Renaissance compositions
Characterization and morphological methods for oral biofilm visualization: where are we nowadays?
No full textThe oral microbiome represents an essential component of the oral ecosystem whose symbiotic relationship contributes to health maintenance. The biofilm represents a state of living of microorganisms surrounding themselves with a complex and tridimensional organized polymeric support and defense matrix. The substrates where the oral biofilm adhere can suffer from damages due to the microbial community metabolisms. Therefore, microbial biofilm represents the main etiological factor of the two pathologies of dental interest with the highest incidence, such as carious pathology and periodontal pathology. The study, analysis, and understanding of the characteristics of the biofilm, starting from the macroscopic structure up to the microscopic architecture, appear essential. This review examined the morphological methods used through the years to identify species, adhesion mechanisms that contribute to biofilm formation and stability, and how the action of microbicidal molecules is effective against pathological biofilm. Microscopy is the primary technique for the morphological characterization of biofilm. Light microscopy, which includes the stereomicroscope and confocal laser microscopy (CLSM), allows the visualization of microbial communities in their natural state, providing valuable information on the spatial arrangement of different microorganisms within the biofilm and revealing microbial diversity in the biofilm matrix. The stereomicroscope provides a three-dimensional view of the sample, allowing detailed observation of the structure, thickness, morphology, and distribution of the various species in the biofilm while CLSM provides information on its three-dimensional architecture, microbial composition, and dynamic development. Electron microscopy, scanning (SEM) or transmission (TEM), allows the high-resolution investigation of the architecture of the biofilm, analyzing the bacterial population, the extracellular polymeric matrix (EPS), and the mechanisms of the physical and chemical forces that contribute to the adhesion of the biofilm to the substrates, on a nanometric scale. More advanced microscopic methodologies, such as scanning transmission electron microscopy (STEM), high-resolution transmission electron microscopy (HR-TEM), and correlative microscopy, have enabled the evaluation of antibacterial treatments, due to the potential to reveal the efficacy of different molecules in breaking down the biofilm. In conclusion, evidence based on scientific literature shows that established microscopic methods represent the most common tools used to characterize biofilm and its morphology in oral microbiology. Further protocols and studies on the application of advanced microscopic techniques are needed to obtain precise details on the microbiological and pathological aspects of oral biofilm
THE USE OF HYPNOSIS IN DENTISTRY IN ANXIOUS PATIENTS. SYSTEMATIC REVIEW OF THE LITERATURE OF THE LAST 5 YEARS
No full textCarcinoma e cheratosi orale
No full textMonografia con lo scopo di formare studenti e laureati in Medicina e Chirurgia, Odontoiatria, specialisti di Odontostomatologia e di Anatomia patologica, all'attuazione di una diagnosi di lesione precancerosa e di una diagnosi precoce di carcinoma oral
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