102 research outputs found

    The archaeological settlement of Monte Bibele (Bologna)

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    Monte Bibele is an archaeological settlement of the 4th and 3rd century BC with a village, a necropolis and a votive deposit. Earlier, during the 14th and 13th century BC, in the same area there was a small village of sub-Apennine facies attributable to the late Bronze Age. The Second Iron Age settlement is just a part of a larger demographic reorganization of the Apennines, as is also proved by the recent discovery of the Monterenzio Vecchio necropolis and votive deposit, on the opposite side of Idice Valley. These are small settlements located close to the main routes of both sides of the Apennines and populated by Italic (Etruscans, Umbrians, Ligurians, etc.) and transalpine peoples (Celts) allied to control the surroundings. Of the architectural structures of Monte Bibele, the best known are those of the village, in the part of the massive called ‘Pianella di Monte Savino’. It has an Etruscan foundation, over an area of about 7,000 m2, in part still to be explored, and documented in its final phase in the late 3rd century BC, when the village was sealed by a sudden fire. Archaeologists of Te.M.P.L.A. (Research Center for Multimedia Technologies Applied to Archaeology of Bologna University’s Department of History and Cultures) over the last decade, have made many models of houses at Pianella. Reconstructions are based on direct feedbacks (archaeological data) and indirect comparisons (historical sources, traditional architecture). The first model was virtual, followed by a real one made near the Museum of Monterenzio, and by the two new houses made directly in situ, thanks to EU funds for the development of Emilia Romagna used for renovating the archaeological and naturalistic area of Monte Bibele (Por Fesr 2007/2013)

    Strategia progetto e sviluppo tecnologico del portale NADIR - network archeologico di ricerca

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    The portal NADIR (Network of Archaeological Research) is developed from the work of the \u201cCommission Carandini\u201d of 2009 for the SITAN (Sistema Informativo Territoriale Archeologico Nazionale) and aims to build integration between scienti c information systems and infrastructure of computer networks, the physical locations and the various functional areas of research that are developed at the national level. It aspires to be a cooperative network of shared work between the different databases spread throughout the country

    Self-assembled guanine ribbons as wide-bandgap semiconductors

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    We present a first principle study about the stability and the electronic properties of a new biomolecular solid-state material, obtained by the self-assembling of guanine (G) molecules. We consider hydrogen-bonded planar ribbons in isolated and stacked configurations. These aggregates present electronic properties similar to inorganic wide-bandgap semiconductors. The formation of Bloch-type orbitals is observed along the stacking direction, while it is negligible in the ribbon plane. Global band-like conduction may be affected by a dipole-field which spontaneously arises along the ribbon axis. Our results indicate that G-ribbon assemblies are promising materials for biomolecular nanodevices, consistently with recent experimental results.Comment: 7 pages, 3 figures, to be published in Physica

    Hybrid molecular electronic (HME) transistor based on deoxyguanosine derivatives

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    In this work, a field effect transistor based on deoxyguanosine derivatives (a DNA basis) is demonstrated by means of systematic transport experiments. Our nanodevices were fabricated starting from a deoxyguanosine derivative (dG(C-10)(2)) layer interconnecting planar nano-electrodes, with separation in the 20-40nm range. The three terminal devices exhibit a maximum voltage gain of 0.76. Though the quick aging and the reproducibility of the devices have to be improved, the realization of a transistor-like device represents a starting point towards the development of planar solid-state bio-molecular electronic devices

    Electronic properties of guanine-based nanowires

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    We present a first-principle study of the electronic and conduction properties of a few classes of nanowires constituted of guanine (G) molecules, self-assembled in different geometries. We first analyze the effect of the vertical π\pi-π\pi interaction in model G-stack columns. Then, we exploit the results obtained from those models to interpret the features of realistic stacked and hydrogen-bonded structures, namely the guanine quadruple helices and the planar ribbons. With respect to natural DNA, the different structures as well as the inclusion of metal cations, drastically affect the bonding pattern among the bases, introducing novel features in the electronic properties of the systems. These supramolecular G-aggregates, alternative to DNA, are expected to show intersting properties for molecular elec tronics applications.Comment: 30 pages (preprint format), 8 figures. To appear in Solid State Communications - Special Issue on "New advances on collective phenomena in one-dimensional systems

    1984-2009. Da Te.m.p.l.a. al Centro di Ricerca per le Tecnologie Multimediali Applicate all’Archeologia. Un caso di studio nella storia delle applicazioni multimediali in archeologia

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    By means of the NADIR network, designed by the Research Centre for Multimedia Technologies Applied to Archaeology (Te.m.p.l.a.), the Department of Archaeology of the University of Bologna organises, controls and develops the use of multimedia technologies in archaeological activities. The reach of NADIR covers a broad spectrum of activities that ranges from the management of the net and the working seats, to the organisation of the equipment logistics, to the realisation of special operational workspace and services (e.g., Unibook.it) and the experimental projects for the remote-control of workspaces and multimedia exhibition halls (e.g., the Multimedia and Multifunctional Museum of Onferno)

    1871: il V Congresso Internazionale di Preistoria di Bologna e la nascita del Museo Civico Archeologico di Bologna

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    DVD video in computer grafica, della durata di 22', realizzato per la nuova sezione preistorica del Museo Civico Archeologico di Bologna, oggi visibile presso le sue sale. Il video racconta la storia dell'organizzazione del V Congresso Internazionale di Preistoria del 1871 in Italia, sotto l'impulso delle rilevanti scoperte, operate nel bolognese e nel modenese da Gozzadini e Chierici, che portaronop al riconoscimento delle culture "villanoviana" e "terramaricola". I principali protagonisti di una stagione fondamentale per la nascita della Geologia, della Paletnologia e della Archeologia moderne, raccontati attraverso la straordinaria documentazione fotografica dell'epoca
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