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    16397 research outputs found

    A possible novel approach to the Riemann Hypothesis (RH) by means of Generalized Zeta Functions related to an infinite set of numerical sequences generated by the Sieve of Eratosthenes

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    This Report provides an overview of the Riemann’s analysis, and finally gives some hints about a possible approach to the RH, which exploits the partial numerical successions provided by the Sieve procedure steps

    Il 'green pass' alla luce dell'articolo 32 della Costituzione: alcune brevi considerazioni

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    Il contributo inquadra la disciplina del c.d. 'green pass', recentemente introdotto dal legislatore italiano allo scopo di fronteggiare l'emergenza sanitaria da COVID-19, all'interno della disciplina costituzionale relativa agli oneri (e agli obblighi) di trattamento sanitario per fini di tutela della salute della collettività, svolgendo alcune considerazioni anche a proposito dell'effetto 'indiretto' di promozione della vaccinazione che il meccanismo può comportare a fronte del ricorso, invece, ad un obbligo di vaccinazione generale

    ARS01_00682 «ARES» D.D. 1735 del 13 Luglio 2017 Ufficio di Supporto Tecnico DIITET Riunione 8 Aprile 2021

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    Il gruppo di lavoro, in occasione della prima riunione di progetto, ha provveduto ad illustrare ai partner (n. 14) le azioni tecnico-amministrative che sarebbero state intraprese con l'avvio degli stati di avanzamento lavori (SAL) e con il monitoraggio tecnico scientifico delle attività, secondo quanto definito dal cronoprogramma di progetto. Un focus particolare è stato dedicato alla normativa della rendicontazione a costo standard (D.M 593/2016)

    Análisis arquitectónico y aplicación de metodología BIM en el santuario extraurbano de Tusculum

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    Building Information Models (BIM) are presented as a tool with interesting possibilities in the fields of knowledge, management and dissemination of architectural and archaeological Cultural Heritage. This study describes the work process and the results of the development of such a digital model for the extra-urban sanctuary of the city of Tusculum, one of the best-preserved buildings of the site, yet less known and studied. Within the framework of a new phase of research on the archaeological site, the stratigraphic and constructive analysis of the wall that delimited the original terrace of the complex has been carried out. This has allowed to determine a chronological sequence and to establish the bases for the modelling of both the current state and some of its evolution phases, thus enabling a proposal for restitution of some of the previous states of the complex. The aim was to build a model that synthesizes the current knowledge and that has open and flexible characteristics, so that future research can enhance, complement or correct it

    Raptor reloaded. Un geodatabase gestionale per la tutela archeologica: nuovi aggiornamenti per un sistema aperto

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    RAPTOR is a geo-database built for the management of the archaeological administrative procedure of the Superintendencies. The system allows the recording of any kind of work carried out in any geographical context and the mapping of the archeological outcomes so that the archaeological maps can be constantly updated. A set of the archaeological data recorded in the system can now be freely accessed on the map by external users; archaeologists in particular can see full information of the archaeological sites. In order to support preventive archaeology, a new section of the system currently allows to map the preventive archaeology investigations and to obtain automatically the vector data of the archaeological sites within the project areas. Moreover, RAPTOR enables now to record and show the plans of the archaeological phases of each single site or urban context; on the other hand a new specific section is dedicated to the drawing of the areas of archaeological potential

    3D virtual reconstruction and sound simulation of old musical instruments

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    Digital technologies and 3D models, nowadays largely used to document archaeological remains and to obtain hypothetical reconstructions when these remains are more or less heavily damaged, can also be powerful tools to simulate and render the acoustic response of an environment, such as the interior of a building, or an artifact, such as sounding objects or musical instruments. This work addresses the cases of three musical instruments of the past – namely a Pan flute, a brass instrument, and an electrophone instrument – coming from different periods and in different states of preservation, which voices can now be heard thanks to as many multidisciplinary projects. Possible approaches to the simulation of the sounds that these instruments could generate are discussed in relation to different aims and contexts

    Classical pottery in collection: the MemO Project and the recreation of a context, in Baldoni V. (ed.), From Pottery to Context. Archaeology and Virtual Modelling

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    Heir to a centuries-old tradition, the phenomenon of collecting ancient pottery, especially Greek and Southern-Italian, is still particularly active, and denoting a still lively adherence to classical taste. The materials of these collections, however, often appear decontextualized, that is to say deprived of their fundamental informative component. Since 2018, through a multidisciplinary approach, the MemO Project, directed by the Department of Cultural Heritage of the University of Padova, has dealt with the study of these materials in order to reconstruct their history and origin, i.e. to systematically recount their memory. This contribution intends to analyze the complexity of the narration of the archaeological data for the decontextualized material and, above all, to detect its informative potential in order to recreate the original context. Through a multidisciplinary teamwork, we intend to present the results obtained in the context of the reconstruction of the history of inevitably inaccessible materials

    COVID-19 in a Patient Newly Diagnosed with AIDS: Asymptomatic Disease

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    The COVID-19 pandemic has posed new challenges for the scientific community. The behaviour of the virus and outcomes in people living with HIV have not yet been properly studied. We report the case of a 34-year-old man with newly diagnosed HIV infection stage 4 and asymptomatic SARS-CoV-2 infection. Although immunocompromised patients are classified as being at high risk of developing severe COVID-19, HIV-related immunosuppression may have a protective role

    Persistent Left Superior Vena Cava: A Finding After Central Venous Catheterization

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    Introduction: Persistence of the left superior vena cava (LSVC) is a rare anatomical variant in the general population, with an estimated incidence of 0.3–0.5% in healthy individuals. It may be diagnosed incidentally after imaging control of the placement of a central venous catheter (CVC) or other device.Patient and Methods: We present the case of a patient with acute disease who required central venous catheterization for the administration of intravenous chemotherapy. Results: Central venous catheterization proved difficult and imaging control revealed the catheter tip in an unusual position. Computed tomography to verify the catheter tip position revealed the presence of a persistent left superior vena cava. The patient then underwent the planned treatment with no complications associated with the CVC.Conclusion: Although uncommon, persistence of the LSVC can have a significant impact in clinical practice, particularly when invasive procedures are required. Its recognition is important in order to minimize the potential complications inherent to such procedures

    Disseminated Cysticercosis

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    Cysticercosis is a parasitic infection caused by larval cysts of the tapeworm Taenia solium. It is highly prevalent in rural areas of developing countries with poor sanitary conditions. We report a rare case of extensive disseminated cysticercosis in a 98-year-old woman who was brought to the emergency department following a fall. The x-ray revealed numerous ‘rice grain’ calcifications predominantly oriented in the plane of muscle fibres. A broad review revealed pelvic, chest and inferior limb involvement. The findings were consistent with cysticercosis

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