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Page 130 of 977 Results 1291 - 1300 of 9762

Pierina Ielpo, Patrick Conry, Alessandra Genga, Riccardo Buccolieri, Livia Giotta, Francesca Di Nicola, Maria Lisa Vincenti, Ludovico Valli, H. J. S. Fernando, Silvana Di Sabatino
Aerosol tracers deposition in a controlled field experiment: role of surface building materials

Submicronic fluorescein aerosols were used as the tracer during four test releases in a field experiment performed at the University of Salento, Lecce (Italy) during October 2014. The role of surface building materials is investigated through the analysis of near surface thermal flow characteristics. Turbulence and thermal conditions in the flow and wall boundary layer were measured simultaneously using an array of meteorological instruments, while concentration of fluorescein deposited on the five different surface building materials were measured by spectrofluorometric techniques. Wall and boundary layer temperatures were determined. Here fluorescein concentration and deposition velocity during the first release test are shown.

Giacomo Fiocco, Tommaso Rovetta, Michela Albano, Mario A. Lazzari, Curzio Merlo, Marco Malagodi
L'Avventuroso 1936 project: the first analytical approach to printed historic Italian comics

The history of modern European comics began in the first half of the 19th century, as a representation of ideas by images, often combined with text or other visual information. The object of this research is represented by an issue of the Nerbini comics series L'avventuroso, pressed in 1936. For the first time, non-invasive diagnostic techniques were used to identify the materials of the support and of the coloured substances adopted in printed comics publications. The multi-analytical campaign combined visible-UV photography, FTIR in μATR mode, and XRF (single point and mapping).

L. Capozzoli, M.P. Boccia, G. De Martino, F.T. Gizzi, M. Sileo, N. Masini
Frescoed wall conditions assessment with noninvasive GPR survey: the case of the Crypt of San Francesco in Irsina (Basilicata, Southern Italy)

In the field of the conservation of cultural heritage, non-invasive tests often represent the only way to monitor the conservation state of monuments and work of arts. Ground penetrating radar (GPR) plays a fundamental role in identifying and assessing the presence of failures and degradation affecting cultural heritage. This paper deals with the use of this geophysical technique to investigate some portions of deteriorated frescoed walls in the Crypt of San Francesco Church in Irsina (Basilicata, Southern Italy). Results allowed to identify several anomalies already distributed in the shallower parts of the investigated walls demonstrating unequivocally the bad conservation state of the frescoes. The GPR survey provided results in accordance with the decay and microclimate monitoring data, as derived from a previous study, and certified the needs of substantial restoration interventions.

Luciana Randazzo, Natalia Rovella, Silvia Muto, Fabrizio Antonelli, Elena Tesser, Mauro Francesco La Russa
Environmental impact on historical monuments: the black crusts of the Venice lagoon

Black crusts are typical decay forms on calcareous rocks in polluted urban environments. Their origin is due to sulphation reaction of calcium carbonate substrates (CaCO3), as a consequence of pH value decrease caused by SO2 in the polluted atmosphere. They can be therefore defined as a passive air pollution sampler. For the purpose of this work, samples from the historic center of Venice were analyzed. The city of Venice suffers in particular maritime and industrial pollution (Marghera industrial zone). By means of minero-petrographic and geochemical analyses, it was possible to obtain information on the mineralogy of the crust and its interaction with the underlying substrates, other than useful information on the chemical composition in terms of major and traces elements linked to the various sources of urban pollution.

Valeria Comite, Mario Colella, Marco Malagodi, Giacomo Fiocco, Michela Albano, Silvia Marchioron, Paola Fermo
Towards the study of alteration patinas on the marble surface of a Renaissance sculptural group from the Museum of Ancient Art (Castello Sforzesco, Milan)

Aim of the present research is the characterization of the alteration patinas present on the surface of a marble Piety dating to Renaissance period and stored at the Castello Sforzesco of Milan. During the last century, a treatment was applied on the statue bringing to the formation of a dark patina which had to be removed. At this purpose a multianalytical approach, based on both portable noninvasive (XRF and colorimetric measurements) and micro-invasive techniques (FTIR/ATR and SEMEDS), has been applied in order to make available to restorers useful information that allow them to adopt a suitable procedure for the removal of the patina and to recover the statue original appearance.

Michela Albano, Giacomo Fiocco, Piercarlo Dondi, Francesca Tasso, Valentina Ricetti, Daniela Comelli, Maurizio Licchelli, Claudio Canevari, Marco Malagodi
Preliminary study for the preservation of two natural horns from the end of the 17th century

A recent finding at the Castello Sforzesco in Milan of two brass natural horns of the end of the 17th century and assigned to the Haas family from Nuremberg, brought to light new information about this class of objects. The instruments were heavily damaged, but their historical value is great. A multidisciplinary collaboration supported by a scientific non-invasive approach, including stereomicroscopic observations of the surface, X-ray radiography and 3D scanning followed by 3D model creation, was employed to discuss numerous issues concerning the knowledge of the artefacts and their preservation: i) executive techniques for archaeometric purposes; ii) study of the shapes with the aim to reconstruct the original model of the instruments; iii) identification and mapping of the damages and the alterations of the structure and the surface.

L. Capozzoli, G. De Martino, V. Lapenna, F. Perciante, E. Rizzo, M.L. Rizzo, A. Serritella, M. Scafuro, O. Voza
Preliminary geophysical surveys and archaeological studies into the buried urban plan of the Lucanian settlement of Caselle in Pittari

The Lucanian settlement of Caselle in Pittari represents one of the most interesting and amazing archaeological sites located in the Southern Italy. The excavations realized in the last three decades have confirmed the presence of an important settlement including houses, workshops, fortification walls. With the aim to identify the urban plan of the site, an extensive geophysical campaign was carried out in the last two years. Results show how the integrated use of archaeological information and geophysical data allow to reconstruct the ancient urban plan of the site formed by orthogonal roads (plateiai and stenopoi) that neatly delimit the isolates (insulae).

Sebastiano D Amico, Emanuele Colica, Raffele Persico, Michele Betti, Salvatore Foti, Maurizio Paterniti Barbino, Luciano Galone
Geophysical investigations, digital reconstruction and numerical modeling at the Batia Church in Tortorici (Messina, Sicily): preliminary results

The paper presents the results of scientific investigations carried out at the Batia Church located in the small village of Tortorici (Messina, Sicily). We performed several geophysical surveys and reconstruct 2D and 3D digital models of the monument. Finally, we present the structural analysis and numerical simulation with the aim of study and evaluate seismic vulnerability of the structure. The analysis consists in collecting data with noninvasive portable instruments to characterize local site effects as well as dynamic properties of the structure.

Maurizio Delli Santi
GIS for the cataloging and enhancement of specchie located in the Upper Salento in Apulia Region (Southern Italy)

A GIS (Geographical Information System) was developed for the management information related to make decisions about the restoration of some important monuments named specchie. The first aim of an informative system is to make it suitable in easy way to the operators which take every useful information. However, this tool requires, for its application, practice and knowledge about narrow fields, because it has to monitor spatial – physical situations in according with different angle-shots: so we shouldn t leave historical research and archaeological surveys, chemical-physical both for knowing the degradation state, and also historic-artistic and architectural research.

Giovanni Leucci, Lara De Giorgi, Giovanni Fragalá, Antonino Mazzaglia, Daniele Malfitana
Geophysival investigations at the Cathedral of Catania

The Cathedral of Catania is a very important monument. It has been repeatedly destroyed and rebuilt after the earthquakes and volcanic eruptions that have followed over time. The first building dates back to the period 1078-1093 and was built on the ruins of the Achillian Baths dating back to the Romans, on the initiative of Count Roger, acquiring all the characteristics of an equipped (i.e. fortified) ecclesia. Already in 1169, a catastrophic earthquake demolished it almost completely, leaving only the apse part intact. In 1194 a fire created considerable damage and finally in 1693 the earthquake that hit the Val di Noto destroyed it almost completely. Geophysical measurements were undertaken inside and outside the Cathedral of Catania. In this paper some results related to ground penetrating radar (GPR) measurements are presented.

Page 130 of 977 Results 1291 - 1300 of 9762