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Page 187 of 977 Results 1861 - 1870 of 9762

Raffaella Marotti
The sixteenth-century find Treatise On Land Surveying Methods Using the Surveyor s Cross, by Francesco Paciotti, military and civil architect to the Duchy of Urbino: the technical evolution of a surveying tool.

This paper focuses on the autograph Treatise On Land Surveying Methods Using the Surveyor s Cross found at the Biblioteca Umanistica dell’Università degli Studi di Urbino Carlo Bo (Carlo Bo Urbino University Humanistic Library). The treatise was for many years erroneously included among the writings of the Urbino mathematician Muzio Oddi (1569-1639), author of Dello Squadro (On Land Surveying Methods Using the Surveyor s Cross) of 1625, but through careful bibliographic research has now been attributed to the civil and military architect Francesco Paciotti, (1521-1591). Paciotti s important knowledge of mathematics and geometry applied to the erection of fortifications and land measurement was essential, too, in the design of an innovative kind of surveyor s cross, which was able to provide more accurate topographic measurements and land surveys. Paciotti extolled the tool as being essential for architecture, and almost certainly used it to build the Citadel of Turin, which provided the model for the construction of all other European citadels and fortresses. Paciotti s treatise provides the restorer with a wealth of knowledge on the materials and executive technique used to manufacture the tool.

Andrea Bacciotti
A short tale of the short story of the sliding rule

The ideation and the design of scientific instruments for measuring and computing have been (and actually they are) often promoted by motivations of strong social and economic interest. In turn, the improvements of instruments influenced the development of new theories. An emblematic example is the story of the sliding rule. In this note, we illustrate the historical origin of the sliding rule, the underlying mathematical principle, and how it can be used to perform arithmetic computations.

Marco Lezzerini, Marcello Spampinato, Nadia Montevecchi, Luca Borgoni, Henric Gronberg, Andrea Aquino
A petrographic study of the mortars from the Villa Reale di Marlia (NW Tuscany, Italy)

This paper focuses on the mortars from the facades of the Villa Reale di Marlia located about 10 km N-NE of the city centre of Lucca (northern Tuscany, Italy). It is a complex of historic buildings built during different constructive phases and embellished with beautiful gardens and botanic rarities, which are protected by high walls. Based on several petrographic analyses the study has allowed us to reconstruct the evolution of the colours of the villa s facades from the transformation project of Elisa Baciocchi to that of Maria Luisa di Borbone, up to the great intervention of recovery of the Pecci Blunt accounts in the twenties-thirties of the twentieth century.

Pietro Aucelli, Claudia Caporizzo, Aldo Cinque, Gaia Mattei, Gerardo Pappone, Michele Stefanile
New insight on the 1st century BC paleo-sea level and related vertical ground movements along the Baia - Miseno coastal sector (Campi Flegrei, southern Italy)

The study area is located along the western border of the Campi Flegrei (CF) caldera, occupied since the first Greek colonization of southern Italy (800 BC), and that still preserves archaeological traces of past coastal conformations. The study aims to present new additional data regarding the RSL position during the 1st century BC, considering also the accompanying changes of the coastal landscape and the implications in terms of human adaptation. By surveying the coastal sector between the modern Baia and Miseno, with a multidisciplinary approach by means of direct and indirect methods, a RSL at - 4.0/4.2 m BSL related to the 1st century BC was detected through the measurements of the submersion of structural elements of three fish tanks. Comparing this value with the eustatic models in stables areas we can affirm that during the last 2100 years the coastal sector suffered an overall subsidence of about 3 m, which has caused a coastal retreat ranging between 50 and 150 m.

Emma Angelini, Andrea Gori
Old anatomical models as makeshifts of measurements in medicine

In 18th century obstetrics became a special branch of medicine, with a corpus of physiological and practical knowledge sufficient to improve the outcome of childbearing. The same period also saw the emergence of new techniques and the development of instruments that would later come into widespread use, such as the forceps, as well as the first production of teaching models to provide surgery students and midwives with three-dimensional illustrations of the anatomy of the pregnant woman, the physiology of childbearing, and potential complications. Some obstetrical wax models, that can be considered makeshifts of measurements in medicine, are illustrated. They are exposed, in number of twenty-one, in the Galileo Museum of Florence and were commissioned, around 1770, by Felice Fontana, who was working on the installation of the Museum of Physics and Natural History of Florence, from the sculptor Giuseppe Ferrini and his assistant Clemente Susini. The anatomical models contributed, in a context in which the measurement was not easy to be taken in situ, to formalize medical knowledge, strictly tied, in the past, to the various communities, that had different ideas about the causes of and cures for suffering, illness and disease. As a matter of facts, instead of being based on objective parameters, medical knowledge was based often on spiritual beliefs as well as practical therapies and techniques. Keywords - anatomical models, obstetrics, history of medicine, didactics

Kathya Bonilla, Alessia D Anna, Rosaria Galvagno, Anna M. Gueli, Stefania Pasquale, Giuseppe Politi, Giuseppe Stella
Quality Assurance for dosimetric measurements of mortar on polymineral fine grain fraction

The aim of this work is to evaluate the possibility to use double Single Aliquot Regeneration (dSAR) method on polymineral fine grain fractions extracted from historical mortars for Optically Stimulated Luminescence (OSL) dating. The studied samples were collected from the church of Notre Dame de la Place (Bordeaux, France) and from the Saint-Jean Baptiste chapel (Périgueux, France). The research work was aimed at identifying the best experimental conditions related to the InfraRed stimulation time and the Preheating temperature value for a more accurate and precise dosimetric measurements. The results show the fundamental importance of these dosimetric tests for the Equivalent Dose (ED) evaluation.

Marco Lezzerini, Marcello Spampinato, Anton Sutter, Nadia Montevecchi, Andrea Aquino
Petrographic characteristics of the mortars from the Pisa s Cathedral apse

The archaeometric study of several mortar samples of the Pisa s Cathedral apse allows us to identify eight types of aerial and hydraulic binding materials, containing cocciopesto, fluvial sand, pozzolana, calcarenite and marble in various proportions bound by both aerial and hydraulic lime. The binder fraction is dirty snow-white in colour, with inhomogeneous structure due to the presence of millimetric lumps, in the cases in which only aerial lime is present and more or less whitish, reddish, pinkish or brownish in colour when binder is showing an hydraulic character.

Fabio Fratini, Silvia Rescic, Emma Cantisani, Elena Pecchioni, Stefano Pasolini, Andrea Cagnini
A new mortar from a strange ancient mortar

During the restoration of Perseus, a sculptural complex realized by G. B. Pieratti in the XVIIth century sited in Boboli Garden (Florence), an ancient mortar used as glue of iron pivots with very particular characteristics was found. Indeed this mortar was made of a magnesium hydroxide based binder (brucite) and barite (barium sulphate) as aggregate. This mortar still show excellent conservation conditions. The aim of this work was trying to reproduce the ancient mortar according to the analytical data about its composition.

Erika Ottaviano, Pierluigi Rea
Design and Implementation of a Mobile Robot for the Mechatronic Survey

Mechatronic survey has becoming a topic of great interest because of the importance for the sustainability, management and preservation of heritage and historical assets. In fact, the main concerns refer to the accessibility of the sites to inspect and invasiveness of the investigation, which are very often time consuming and high-cost due to security issues. In this paper, we discuss a mechatronic solution for the survey based on a mobile robotic platform, on which equipment and sensors are installed to perform automatic or semi-automatic survey. In this regard, a suitable simulation of the operation is very useful for training and verification of the robot motion capabilities. Simulation tests are reported for the robot carrying equipment, together with experimental tests. The developed solution may be used for indoor or outdoor inspections.

Page 187 of 977 Results 1861 - 1870 of 9762