Search results for "Insula"
showing 10 items of 735 documents
La géographie de la Sicile dans la Bibliothéque Historique de Diodore de Sicile
2023
Diodorus’ information on Sicilian geography are few, and they occur in Books 4-5, devoted to local myths. The historian deals especially with subjects such as insularity, site, dimensions of the Island, with the aim to stress the central role played by Sicily within the ancient Mediterranean world, also from a geographical point of view. In Diodorus’ Sicilian “Archaeology” the coeval data about geography mingle with mythical information, often approximative and unreal, which the historian found in previous literary traditions. Yet mythical heroes left traces of their presence on the Island, and these are considered by Diodorus as still visible in his times, and a proof of their passage. Cen…
Fare rotta verso nuove terre: la diaspora greco-albanese della prima età moderna
2021
The contribution aims to frame the diasporic phenomenon of the 15th-16th centuries of the Balkan populations from areas roughly corresponding today to Albania and Greece, reading it according to a plurality of levels and intertwining that characterize the Mediterranean modern age history. Specifically, the paper summarizes the most recent reflections on the subject and focuses on the reasons that triggered the migration flows and on the historiographical narration over the centuries.
Interazioni tra migranti e popolazioni locali nella Sicilia centrale del IV sec. a.C.
2017
The contribution concern the hinterland of Sicily in the 4th century BC, particularly the part delimited by the rivers Halykos and Himeras, inhabited by the Sicans since prehistoric times. The few testimonies of the historical sources about this population of anellenic origin for the given period are compared to the news derived from the analysis of numismatic documents found in the territory in the contest of 4th century BC. The analysis will allow to take account of the prevailing conservatism of these communities, despite interactions with the peninsular groups established in this part of the island in the second half of the 4th century a.C.
Active Plasmonics in True Data Traffic Applications: Thermo-Optic On/Off Gating Using a Silicon-Plasmonic Asymmetric MachZehnder Interferometer
2012
We present the first system-level demonstration of an active plasmonic device in 10-Gb/s data traffic conditions. An asymmetric silicon-plasmonic Mach-Zehnder interferometer with dielectric-loaded plasmonic waveguides serving as the electrically controlled arms, operates as thermo-optic ON/OFF gating element with 2.8-mu s response time and 10.8-mW power consumption. We present the first system-level demonstration of an active plasmonic device in 10-Gb/s data traffic conditions. An asymmetric silicon-plasmonic Mach-Zehnder interferometer with dielectric-loaded plasmonic waveguides serving as the electrically controlled arms, operates as thermo-optic ON/OFF gating element with 2.8-mu s respon…
La utilización de marfil de cachalote en el Calcolítico de Portugal
2013
Scientific analysis were undertaken within a research project concerning ivory objects from the Chalcolithic to Early Bronze Age of the Iberian Peninsula. In several of the analyses of objects from Portuguese Estremadura, especially V-perforated buttons, we could detect for the first time the presence of sperm whale ivory. This highlights the advantage and necessity of scientific analysis of ivory. It also clearly demonstrates that not all ivory used was ivory from African or Asian elephants, but we also did find ivory from the extinct Elephas antiquus, the hippopotamus and in this case sperm-whale. Thus, already in the Chalcolithic the raw material provenience was highly diverse, which in …
Haldane Model at finite temperature
2019
We consider the Haldane model, a 2D topological insulator whose phase is defined by the Chern number. We study its phases as temperature varies by means of the Uhlmann number, a finite temperature generalization of the Chern number. Because of the relation between the Uhlmann number and the dynamical transverse conductivity of the system, we evaluate also the conductivity of the model. This analysis does not show any sign of a phase transition induced by the temperature, nonetheless it gives a better understanding of the fate of the topological phase with the increase of the temperature, and it provides another example of the usefulness of the Uhlmann number as a novel tool to study topolog…
New data on the taxonomy of the endemic myomiminae (gliridae, rodentia) from the late miocene-early pliocene of gargano (southern Italy) with the des…
2009
The Late Miocene-Early Pliocene “Terre Rosse” vertebrate assemblages, found in the palaeokarst fissure fillings of the Apricena-Poggio Imperiale limestone quarries (North-Western side of the Gargano promontory, southern Italy), document a very long and complex history of endemic populations of a palaeoarchipelago. That history developed in at least four populating phases, which are characterised by changes in faunal diversity and include taxa with different degree of endemism. They have been subject of several studies since the beginning of the 1970s and deserve a particular attention for their evolutionary and palaeogeographical implications. The sampling of the “Terre Rosse” fissure filli…
Spatio-Temporal Assessment of the European Hake (Merluccius merluccius) Recruits in the Northern Iberian Peninsula
2021
14 pages, 9 figures, 3 tables.-- This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY)
A digital device for the diagnosis of insulation systems
2004
A complete innovative measurement system (D2SI - device for the diagnosis of insulation systems) for both acquisition, analysis and processing of partial discharge signals generated in insulation systems under voltage stress (IEC standard), was designed and realized; several measurements on practical insulation systems demonstrated the full and correct equipment operation.
High-pressure studies of topological insulators Bi2Se3, Bi2Te3, and Sb2Te3
2013
Bi2Se3, Bi2Te3, and Sb2Te3 are narrow bandgap semiconductors with tetradymite crystal structure (R-3m) which have been extensively studied along with their alloys due to their promising operation as thermoelectric materials in the temperature range between 300 and 500¿K. Studies on these layered semiconductors have increased tremendously in the last years since they have been recently predicted and demonstrated to behave as 3D topological insulators. In particular, a number of high-pressure studies have been done in the recent years in these materials. In this work we summarize the main results of the high-pressure studies performed in this family of semiconductors to date. In particular, w…