<p><strong>Abstract.</strong> The architectural and sculptural value of the investigated Cultural Heritage has suggested a variety of possible approaches ranging from the traditional modus operandi to the implementation of innovative technology. The conducted research implemented digital and automatic photogrammetry software using Structure from Motion or SFM. These techniques which involve the convergence of different disciplines, such as Computer Vision and photogrammetry seek to generate 3D models, that is the mathematical representation of the investigated 3D objects. The integration of UAS, photogrammetry and TLS develops 3D models able to provide more detailed information. The main purpose of the present research is to test the potentialities offered by the new survey and 3D processing systems in order to carry out historical analyses and investigations in closed environments and for small scale architecture. Starting from the acquired data, the 3D models of the altars allow a 3D comparison between the works object of study and Pozzo’s treatise, also allowing speculation about their possible relations, providing extraordinary outcomes from the point of view of survey integrated methodologies and from the point of view of historical and geometric interpretation.</p>

The effect exerted by some amines and alcohols on the 1 H NMR spectra of 1-butyl-3-methylimidazolium tetrafluoroborate [bmim][BF4] has been studied. This ionic liquid, which is one of the most widely used, is characterized by a high structural order degree, as a consequence of the symmetry and the coordination ability of the anion. In order to have information about the dependence of the detected effects on the alcohol or amine structure, some different primary, secondary and tertiary amines and alcohols have been considered. Furthermore, in the case of amines, their basicity has been also taken into account. Both amines and alcohols induce variation in chemical shifts values and signal multiplicity of imidazolium protons. Collected data show that, among imidazolium protons, the aromatic ones are the most affected by the presence of organic molecule. Cross-correlations among chemical shift values relevant to these protons allow us to explain how 1 H NMR spectrum variations depend on probe structural properties.

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The present article deals with the results of a recent study conducted by the Laboratory of Representation at the University of Catania regarding the 3D modelling process of the archaeological site of Euryalus Castle in Siracusa. The purpose of the research was to discuss the survey methods implemented in the archaeological field, considering each methodology as a singular or as a multi-sensor approach. Digital integrated survey (range-based and image-based methods) and, in particular, the UAS system (Unmanned Aerial System) reduce the problems connected with the survey of complex or large objects and increase capability exposure thanks to the high quality of 3D photorealistic technology. The traditional survey systems applied to the area around Siracusa and to the archaeological site have been integrated, in the present case study, with UAV (Unmanned Aerial Vehicle) photogrammetric survey for the acquisition of nadir and oblique imagery. The research shows that modern survey technology contributes to the digital 3D monitoring and documentation of cultural heritage.

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