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50 Research products, page 1 of 5

  • Digital Humanities and Cultural Heritage
  • Publications
  • Research data
  • Research software
  • Other research products
  • 2013-2022
  • European Commission
  • EU
  • IT
  • Archivio della ricerca- Università di Roma La Sapienza
  • Digital Humanities and Cultural Heritage
  • Social Science and Humanities

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  • Open Access English
    Authors: 
    Federico Galli; Cristiano Ciurluini; Vincenzo Narcisi; Fabio Giannetti; Gianfranco Caruso;
    Publisher: IOP Publishing Ltd
    Country: Italy
    Project: EC | EUROfusion (633053)

    Abstract After decades of operation in nuclear power plants, Once-Through Steam Generators (OTSGs) were recently proposed for nuclear fusion applications. In particular, they are supposed to be installed in the primary cooling systems of the European Union Demonstration fusion power plant (EU-DEMO). One of the key reactor components is the Breeding blanket (BB). Among the BB concepts that are currently under study, Water-Cooled Lithium-Lead (WCLL) option was considered for this work. The WCLL blanket is divided in two main subsystems, the breeder zone (BZ) and the first wall (FW), each one provided with an independent cooling circuit, named Primary Heat Transfer System (PHTS). Thermal power removed from BB by BZ and FW PHTS is driven to the Power Conversion System (PCS) to be converted into electricity. The thermal coupling is ensured by two OTSGs per system. At the Department of Astronautical, Electrical and Energy Engineering (DIAEE) of Sapienza University of Rome, a simulation activity was carried out to understand the component thermal-hydraulic behavior during DEMO normal operations. For calculation purposes, a full model of the steam generator was prepared by using a modified version of RELAP5/MOD3.3 system code. The computational activity performed allows to preliminary characterize the OTSG thermal-hydraulic performances during both pulse and dwell phases.

  • Publication . Conference object . Article . 2022
    Open Access English
    Authors: 
    Lorenzo Melchiorri; Alessandro Tassone; Gianfranco Caruso;
    Publisher: IOP
    Country: Italy
    Project: EC | EUROfusion (633053)

    Abstract In fusion reactor blanket design, liquid metals are attractive working fluids since it is possible to combine in a single fluid the functions of coolant, tritium carrier and breeder. These electrically conductive fluids flow in the presence of a strong magnetic field, inducing the appearance of Lorentz forces and magnetohydrodynamic MHD effects. Increased pressure loss, particularly in complex geometry elements, is a critical point for blanket design. The MHD flow through an orifice plate made by electroconductive walls (c = 0.01 ÷ 0.1) has been analysed in this paper using ANSYS CFX in the range Re = 108, and Ha = 0 ÷ 300. A wide recirculation region is detected after the flow exits the orifice, with potentially harmful consequences for efficient tritium removal. Large pressure loss occurs in the orifice due to conductive wall and non-negligible axial length. The 3D pressure drop term is characterized through a local resistance coefficient (k) that is found to be k ≈ 0.205 for well conducting walls (c = 0.1) and k ≈ 0.063 for poorly conducting ones (c = 0.01).

  • Publication . Conference object . 2022
    Open Access English
    Authors: 
    ELEONORA BERNASCONI; Boccuzzi, M.; Briasco, L.; Catarci, T.; Ghignoli, A.; Leotta, F.; Mecella, M.; Monte, A.; Sietis, N.; Veneruso, S.; +1 more
    Country: Italy
    Project: EC | NOTAE (786572)
  • Open Access English
    Authors: 
    Paolone, A; Brutti, S;
    Publisher: Institute of Physics Publishing, Bristol , Regno Unito
    Country: Italy
    Project: EC | Si-DRIVE (814464)

    Abstract In this paper we investigated the calculation of the anodic limit of two anions of ionic liquids, largely used as electrolyte of lithium batteries. Starting from a model based on calculations performed on single ions at the MP2 level of theory, we showed that the matching between calculation and experiments decreases while using more expanded basis set with respect to 6-31G**, possibly because of the destabilization of the neutral species when larger basis sets are considered. Additionally, in order to decrease the computational time, the performances for the calculation of the anodic limit obtained by means of a series of DFT functionals with increasing level of complexity (from the Generalized Gradient Approximation to the Range Separated Hybrid meta-Generalized Gradient Approximation) were compared. Overall, the best performing functionals are BMK, ωB97M-V and MN12-SX, while acceptable results can be obtained by M06-2X, M11, M08-HX and M11-L. Some less computationally expensive functionals, like CAM-B3LYP and ωB97X-D, also provide reasonable values of the anodic limit.

  • Open Access English
    Authors: 
    Ambrosetti, Elena; Miccoli, Sara; Strangio, Donatella;
    Publisher: Bancaria editrice
    Country: Italy
    Project: EC | PERCEPTIONS (833870)
  • Open Access English
    Authors: 
    Monella, Paolo;
    Publisher: L'Erma di Bretschneider
    Country: Italy
    Project: EC | PAGES (882588)
  • Open Access
    Authors: 
    Federica Fontana; Emanuela Cristiani; Stefano Bertola; François Briois; Antonio Guerreschi; Sara Ziggiotti;
    Publisher: figshare
    Countries: France, Italy, Italy
    Project: EC | HIDDEN FOODS (639286)

    The Late Mesolithic in Southern Europe is dated to the 7th and the first part of the 6th millennia BCE and is marked by profound changes which are mostly evident in the technical know-how and tool-kit of the last hunter-fisher-gatherer societies. The significance of this phase also relates to the fact that it precedes the Early Neolithic, another period of major transformations of human societies. Nonetheless, the Late Mesolithic still remains a poorly known age in this area. A burial discovered at Mondeval de Sora (Northern Italy) in 1987, represents a unique window into this period. In this paper, we provide a detailed analysis of more than 50 lithic and osseous artifacts associated with this burial. We highlight important contextual data regarding the techno-economic dimension and the notion of personal burial possessions. Based on the association and location of some items, we propose a new interpretation of the social status of this individual and the possible impact of technological innovation on the social organization and symbolic sphere of Late Mesolithic groups.

  • Open Access
    Authors: 
    Ella Assaf; Isabella Caricola; Avi Gopher; Jordi Rosell; Ruth Blasco; Oded Bar; Ezra Zilberman; Cristina Lemorini; Javier Baena; Ran Barkai; +1 more
    Publisher: figshare
    Countries: Spain, Italy
    Project: EC | HIDDEN FOODS (639286)

    The presence of shaped stone balls at early Paleolithic sites has attracted scholarly attention since the pioneering work of the Leakeys in Olduvai, Tanzania. Despite the persistent presence of these items in the archaeological record over a period of two million years, their function is still debated. We present new results from Middle Pleistocene Qesem Cave on the use of these implements as percussion tools. Use-wear and abundant bone and fat residues found on ten shaped stone balls indicate crushing of fresh bones by thrusting percussion and provide direct evidence for the use of these items to access bone marrow of animal prey at this site. Two experiments conducted to investigate and verify functional aspects proved Qesem Cave shaped stone balls are efficient for bone processing and provide a comfortable grip and useful active areas for repeated use. Notably, the patina observed on the analyzed items precedes their use at the cave, indicating that they were collected by Qesem inhabitants, most probably from older Lower Paleolithic Acheulian sites. Thus, our results refer only to the final phases of the life of the items, and we cannot attest to their original function. As bone marrow played a central role in human nutrition in the Lower Paleolithic, and our experimental results show that the morphology and characteristics of shaped stone ball replicas are well-suited for the extraction of bone marrow, we suggest that these features might have been the reason for their collection and use at Qesem Cave. These results shed light on the function of shaped stone balls and are consistent with the significance of animal fat in the caloric intake of Middle Pleistocene humans as shown by the archeozoological evidence at Qesem Cave and possibly beyond We acknowledge funding received for this project through the European Research Council (ERC Starting Grant Project HIDDEN FOODS, G.A. no. 639286 to EC). CL is grateful to MAECI (Italian Ministry for the Foreign Affairs) for its funding support to this project. EA is grateful to the Azrieli Foundation for the award of an Azrieli Fellowship. This study was funded by the grant UT 41/4-1 “Cultural and biological transformations in the Late Middle Pleistocene (420- 200 ka ago) at Qesem Cave, Israel: In search for a post-Homo erectus lineage in the Levantine corridor” (A. Gopher, R. Barkai, Th. Uthmeier) of the Deutsche Forschungsgemeinschaft (DFG). The Qesem Cave excavation project was previously supported by the Israel Science Foundation, the CARE Archaeological Foundation, the Leakey Foundation, the Wenner-Gren Foundation, the Dan David Foundation, and the German Research Foundation

  • Closed Access English
    Authors: 
    Vanessa Forte; O. Tarquini; Michela Botticelli; Laura Medeghini;
    Publisher: Blackwell Publishing Ltd
    Country: Italy
    Project: EC | TraCTUs (702493)
  • Publication . Article . Conference object . 2020
    Open Access English
    Authors: 
    E. Baracchini; R. Bedogni; F. Bellini; Luisa Benussi; Stefano Bianco; C. Capoccia; Michele Arturo Caponero; G. Cavoto; I. A. Costa; E. Di Marco; +18 more
    Publisher: Institute of Physics Publishing
    Country: Italy
    Project: EC | INITIUM (818744)

    Abstract The goal of the CYGNO project is to deploy at Laboratori Nazionali del Gran Sasso (LNGS) an high resolution Time Projection Chamber (TPC) with Gas Electron Multipliers (GEMs) amplification and optical 3D readout of an Helium/Fluorine based gas mixture for directional Dark Matter (DM) searches at low 1-10 GeV WIMP masses. The determination of the incoming direction of WIMP particles can in fact offer not only additional handles for discrimination of the annoying backgrounds, but especially an unique key for a positive, unambiguous identification of a DM signal.

Advanced search in Research products
Research products
arrow_drop_down
Searching FieldsTerms
Any field
arrow_drop_down
includes
arrow_drop_down
Include:
The following results are related to Digital Humanities and Cultural Heritage. Are you interested to view more results? Visit OpenAIRE - Explore.
50 Research products, page 1 of 5
  • Open Access English
    Authors: 
    Federico Galli; Cristiano Ciurluini; Vincenzo Narcisi; Fabio Giannetti; Gianfranco Caruso;
    Publisher: IOP Publishing Ltd
    Country: Italy
    Project: EC | EUROfusion (633053)

    Abstract After decades of operation in nuclear power plants, Once-Through Steam Generators (OTSGs) were recently proposed for nuclear fusion applications. In particular, they are supposed to be installed in the primary cooling systems of the European Union Demonstration fusion power plant (EU-DEMO). One of the key reactor components is the Breeding blanket (BB). Among the BB concepts that are currently under study, Water-Cooled Lithium-Lead (WCLL) option was considered for this work. The WCLL blanket is divided in two main subsystems, the breeder zone (BZ) and the first wall (FW), each one provided with an independent cooling circuit, named Primary Heat Transfer System (PHTS). Thermal power removed from BB by BZ and FW PHTS is driven to the Power Conversion System (PCS) to be converted into electricity. The thermal coupling is ensured by two OTSGs per system. At the Department of Astronautical, Electrical and Energy Engineering (DIAEE) of Sapienza University of Rome, a simulation activity was carried out to understand the component thermal-hydraulic behavior during DEMO normal operations. For calculation purposes, a full model of the steam generator was prepared by using a modified version of RELAP5/MOD3.3 system code. The computational activity performed allows to preliminary characterize the OTSG thermal-hydraulic performances during both pulse and dwell phases.

  • Publication . Conference object . Article . 2022
    Open Access English
    Authors: 
    Lorenzo Melchiorri; Alessandro Tassone; Gianfranco Caruso;
    Publisher: IOP
    Country: Italy
    Project: EC | EUROfusion (633053)

    Abstract In fusion reactor blanket design, liquid metals are attractive working fluids since it is possible to combine in a single fluid the functions of coolant, tritium carrier and breeder. These electrically conductive fluids flow in the presence of a strong magnetic field, inducing the appearance of Lorentz forces and magnetohydrodynamic MHD effects. Increased pressure loss, particularly in complex geometry elements, is a critical point for blanket design. The MHD flow through an orifice plate made by electroconductive walls (c = 0.01 ÷ 0.1) has been analysed in this paper using ANSYS CFX in the range Re = 108, and Ha = 0 ÷ 300. A wide recirculation region is detected after the flow exits the orifice, with potentially harmful consequences for efficient tritium removal. Large pressure loss occurs in the orifice due to conductive wall and non-negligible axial length. The 3D pressure drop term is characterized through a local resistance coefficient (k) that is found to be k ≈ 0.205 for well conducting walls (c = 0.1) and k ≈ 0.063 for poorly conducting ones (c = 0.01).

  • Publication . Conference object . 2022
    Open Access English
    Authors: 
    ELEONORA BERNASCONI; Boccuzzi, M.; Briasco, L.; Catarci, T.; Ghignoli, A.; Leotta, F.; Mecella, M.; Monte, A.; Sietis, N.; Veneruso, S.; +1 more
    Country: Italy
    Project: EC | NOTAE (786572)
  • Open Access English
    Authors: 
    Paolone, A; Brutti, S;
    Publisher: Institute of Physics Publishing, Bristol , Regno Unito
    Country: Italy
    Project: EC | Si-DRIVE (814464)

    Abstract In this paper we investigated the calculation of the anodic limit of two anions of ionic liquids, largely used as electrolyte of lithium batteries. Starting from a model based on calculations performed on single ions at the MP2 level of theory, we showed that the matching between calculation and experiments decreases while using more expanded basis set with respect to 6-31G**, possibly because of the destabilization of the neutral species when larger basis sets are considered. Additionally, in order to decrease the computational time, the performances for the calculation of the anodic limit obtained by means of a series of DFT functionals with increasing level of complexity (from the Generalized Gradient Approximation to the Range Separated Hybrid meta-Generalized Gradient Approximation) were compared. Overall, the best performing functionals are BMK, ωB97M-V and MN12-SX, while acceptable results can be obtained by M06-2X, M11, M08-HX and M11-L. Some less computationally expensive functionals, like CAM-B3LYP and ωB97X-D, also provide reasonable values of the anodic limit.

  • Open Access English
    Authors: 
    Ambrosetti, Elena; Miccoli, Sara; Strangio, Donatella;
    Publisher: Bancaria editrice
    Country: Italy
    Project: EC | PERCEPTIONS (833870)
  • Open Access English
    Authors: 
    Monella, Paolo;
    Publisher: L'Erma di Bretschneider
    Country: Italy
    Project: EC | PAGES (882588)
  • Open Access
    Authors: 
    Federica Fontana; Emanuela Cristiani; Stefano Bertola; François Briois; Antonio Guerreschi; Sara Ziggiotti;
    Publisher: figshare
    Countries: France, Italy, Italy
    Project: EC | HIDDEN FOODS (639286)

    The Late Mesolithic in Southern Europe is dated to the 7th and the first part of the 6th millennia BCE and is marked by profound changes which are mostly evident in the technical know-how and tool-kit of the last hunter-fisher-gatherer societies. The significance of this phase also relates to the fact that it precedes the Early Neolithic, another period of major transformations of human societies. Nonetheless, the Late Mesolithic still remains a poorly known age in this area. A burial discovered at Mondeval de Sora (Northern Italy) in 1987, represents a unique window into this period. In this paper, we provide a detailed analysis of more than 50 lithic and osseous artifacts associated with this burial. We highlight important contextual data regarding the techno-economic dimension and the notion of personal burial possessions. Based on the association and location of some items, we propose a new interpretation of the social status of this individual and the possible impact of technological innovation on the social organization and symbolic sphere of Late Mesolithic groups.

  • Open Access
    Authors: 
    Ella Assaf; Isabella Caricola; Avi Gopher; Jordi Rosell; Ruth Blasco; Oded Bar; Ezra Zilberman; Cristina Lemorini; Javier Baena; Ran Barkai; +1 more
    Publisher: figshare
    Countries: Spain, Italy
    Project: EC | HIDDEN FOODS (639286)

    The presence of shaped stone balls at early Paleolithic sites has attracted scholarly attention since the pioneering work of the Leakeys in Olduvai, Tanzania. Despite the persistent presence of these items in the archaeological record over a period of two million years, their function is still debated. We present new results from Middle Pleistocene Qesem Cave on the use of these implements as percussion tools. Use-wear and abundant bone and fat residues found on ten shaped stone balls indicate crushing of fresh bones by thrusting percussion and provide direct evidence for the use of these items to access bone marrow of animal prey at this site. Two experiments conducted to investigate and verify functional aspects proved Qesem Cave shaped stone balls are efficient for bone processing and provide a comfortable grip and useful active areas for repeated use. Notably, the patina observed on the analyzed items precedes their use at the cave, indicating that they were collected by Qesem inhabitants, most probably from older Lower Paleolithic Acheulian sites. Thus, our results refer only to the final phases of the life of the items, and we cannot attest to their original function. As bone marrow played a central role in human nutrition in the Lower Paleolithic, and our experimental results show that the morphology and characteristics of shaped stone ball replicas are well-suited for the extraction of bone marrow, we suggest that these features might have been the reason for their collection and use at Qesem Cave. These results shed light on the function of shaped stone balls and are consistent with the significance of animal fat in the caloric intake of Middle Pleistocene humans as shown by the archeozoological evidence at Qesem Cave and possibly beyond We acknowledge funding received for this project through the European Research Council (ERC Starting Grant Project HIDDEN FOODS, G.A. no. 639286 to EC). CL is grateful to MAECI (Italian Ministry for the Foreign Affairs) for its funding support to this project. EA is grateful to the Azrieli Foundation for the award of an Azrieli Fellowship. This study was funded by the grant UT 41/4-1 “Cultural and biological transformations in the Late Middle Pleistocene (420- 200 ka ago) at Qesem Cave, Israel: In search for a post-Homo erectus lineage in the Levantine corridor” (A. Gopher, R. Barkai, Th. Uthmeier) of the Deutsche Forschungsgemeinschaft (DFG). The Qesem Cave excavation project was previously supported by the Israel Science Foundation, the CARE Archaeological Foundation, the Leakey Foundation, the Wenner-Gren Foundation, the Dan David Foundation, and the German Research Foundation

  • Closed Access English
    Authors: 
    Vanessa Forte; O. Tarquini; Michela Botticelli; Laura Medeghini;
    Publisher: Blackwell Publishing Ltd
    Country: Italy
    Project: EC | TraCTUs (702493)
  • Publication . Article . Conference object . 2020
    Open Access English
    Authors: 
    E. Baracchini; R. Bedogni; F. Bellini; Luisa Benussi; Stefano Bianco; C. Capoccia; Michele Arturo Caponero; G. Cavoto; I. A. Costa; E. Di Marco; +18 more
    Publisher: Institute of Physics Publishing
    Country: Italy
    Project: EC | INITIUM (818744)

    Abstract The goal of the CYGNO project is to deploy at Laboratori Nazionali del Gran Sasso (LNGS) an high resolution Time Projection Chamber (TPC) with Gas Electron Multipliers (GEMs) amplification and optical 3D readout of an Helium/Fluorine based gas mixture for directional Dark Matter (DM) searches at low 1-10 GeV WIMP masses. The determination of the incoming direction of WIMP particles can in fact offer not only additional handles for discrimination of the annoying backgrounds, but especially an unique key for a positive, unambiguous identification of a DM signal.