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Properties of pasta phases in catalyzed neutron stars
No full textExotic non-spherical configurations of nuclei, known as “pasta” phases, are expected to be present at the bottom of the inner crust of a neutron star. We study the properties of these configurations in catalyzed neutron stars within
a compressible liquid-drop model approach, with surface parameters optimized to reproduce experimental nuclear masses. Our results show that the properties of the pasta phases exhibit strong model dependence. To estimate the model uncertainties, a Bayesian analysis is performed, combining information from nuclear physics experiments and chiral perturbation theoretical calculations with astrophysical observations. The inferred posterior distributions are discussed, with particular focus on the effect of the low-density energy functional on the predictions
Come Parti diverse dai Beneficiari possono partecipare a Horizon Europe. Altre Parti-Organizzazioni che partecipano a progetti di Horizon Europe senza firmare il Grant Agreement
Get PDFAl fine di armonizzare la terminologia e le regole con altri programmi dell’Unione Europea (UE), la Commissione Europea ha sistematizzato e cambiato la nomenclatura utilizzata per la definizione dei ruoli di altre parti diverse dai beneficiari, coinvolte nei progetti di Horizon Europe. Tali parti sono: Affiliated Entities, Associated Partners, Third Parties giving in-kind contributions, Subcontractors, Recipients of financial support to third Parties. A differenza dei Beneficiari, esse non firmano il Grant Agreement con la Commissione Europea, ma il loro coinvolgimento e contributo nel progetto deve essere previsto e dichiarato fin dalla preparazione della proposta progettuale. Queste linee guida sono state sviluppate per venire incontro alle richieste d’informazione dei ricercatori, come ausilio per la presentazione di proposte progettuali in Horizon Europe. Esse sono state elaborate a partire dall’AGA–Annotated Model Grant Agreement (versione del 23/07/2021), dalla Standard Application Form (versione del 26/05/2021), dalla normativa di riferimento nazionale, dalle direttive del Consiglio Nazionale delle Ricerche, dalla partecipazione a giornate informative europee e dal confronto con il National Contact Point di APRE (Agenzia per la Promozione della Ricerca Europea)
Researches at the Monte Abatone necropolis (Cerveteri)
Get PDFThe Authors illustrate the ‘Monte Abatone Project’, focusing on the important necropolis South of the ancient city of Caere. The area in its archaeological and topographical features was not further studied since the geophysical campaigns (1957-1961) by the Lerici Foundation. The main focus is the large area around the Campana Tumulus, previously left unexplored in the large plan by the Lerici Foundation. Excavations in 2018-2021 on the South side of this area led, conversely, to discover a possible ‘family’ cluster of tombs, dating to at least between the early Orientalizing and the early/middle Archaic period: these tombs were of fossa, semi-constructed, single-chamber and C2 types. Also, further unknown sectors of the necropolis were found not far from this cluster, with a concentration of tombs of the early semi-constructed type (first half of VII cent. BCE), provided with small tumuli, ordered in two approximatively parallel rows and all oriented North-West. This suggests the existence of a planning by some form of ‘urban’ authority, at a time – beginning with the Early Orientalizing period − that marked a considerable acceleration in the economic growth of the city and its civil-political structure. The area West and North of the Campana Tumulus was also investigated, including surveying the edges of the plateau that led to the identification of tombs (VI-III cent. BCE) excavated in the past and partially backfilled, and terraces for funerary rites which are oriented, like the Tumulus, toward the city plateau. Extensive use of laser scanning and photogrammetry allowed to produce a model of the Monte Abatone plateau, a 3D model of both the Campana Tumulus, never surveyed since the first half of the nineteenth century, and other excavated tombs
Muon and electron g-2 and proton and cesium weak charges implications on dark Zd models
No full textThe recent determination of the anomalous muon magnetic moment performed at Fermilab motivated us to look for an interpretation of the result in the framework of a beyond the standard model vector Zd mediator. In this work, we derive the constraints on such model obtained from the muon and electron magnetic moment determinations and the measurements of the proton and cesium weak charge, QW . We first revisit the determination of the cesium QW from atomic parity violation experiment by exploiting recent results from other electroweak probes. From a combined fit of all the mentioned experimental results, we obtain rather precise limits on the mass and the kinetic mixing parameter of the Zd boson, namely mZd = 47+61 −16 MeV and ε = 2.3+1.1
−0.4×10−3, when marginalizing over the Z −Zd mass mixing parameter
PICO-500: A tonne scale bubble chamber for the search of dark matter
No full textThe PICO-500 experiment will search for dark matter by first operating a 260 liters bubble chamber filled with C3F8, with a target sensitive to the spin-independent and spin-dependent WIMP-nucleon cross-sections of approximately 10−44 cm2 and 10−42 cm2, respectively. To guarantee a low background rate and therefore find a WIMP signal or set strong exclusion limits, the geometry and radio-purity of the materials to be used must be optimized. A detailed model of the detector has been developed in GEANT4 to perform the Monte Carlo simulations. The main sources of background signals in this detector are from (α, n) reactions and spontaneous fission. Contributions from internal components, exposure to radon present in SNOLAB’s Cube Hall as well as photonuclear reactions have been considered in this work. Preliminary results show a very low estimated rate of background events, less than one single bubble event per year
The veto apparatus of DarkSide-20k: Dark Matter search in a background-free experiment
No full textDarkSide-20k is a background-free experiment under construction at INFN, Laboratori Nazionali del Gran Sasso. Its purpose is to directly detect Dark Matter particles exploiting WIMP-nucleon scattering in liquid argon. The detector incorporates an innovative gadolinium-doped veto to identify neutron interactions, which takes advantage of liquid argon scintillation. The optimal placement of the photodetectors in the veto made possible to obtain a non-uniformity of the light
collection of 3% at 1σ
A method for the study of the quantum interference between singly and doubly resonant top-quark production in proton-proton collisions at the LHC with the ATLAS detector
No full textIn this work, a method to be used for the measurement of the W bW b production differential cross-section as a function of variables sensitive to tt/tW ¯ interference is presented: tt¯ represents the doubly-resonant production, while tW is the singly-resonant one. This method is being used in the data sample collected by the ATLAS detector in 2015–2018 and corresponding to √s = 13 TeV and L = 139 fb−1. Single- and double-differential cross-sections extraction and comparison to theoretical predictions are described
Attività scientifiche del progetto “Tecnologie e processi per il miglioramento della shelf-life dei prodotti del comparto agroalimentare attraverso l'uso di film edibili innovativi a base di pectine”
Get PDFIl progetto “Tecnologie e processi per il miglioramento della shelf-life dei prodotti del
comparto agroalimentare attraverso l'uso di film edibili innovativi a base di pectine”
(PECTINE) - PON Ricerca e Competitività 2007-2013, della durata di 28 mesi e conclusosi
nel 2015, ha avuto come soggetti proponenti: Dipartimento scienze bio-agroalimentari
A.A.T. del CNR, Agroindustry Advanced Technologies S.p.a, Apofruit ltalia Soc. Coop
Agricola e il co.Ri.Bi.A. consorzio di Ricerca sur Rischio Biorogico in Agricortura. Tra i
soggetti terzi coinvolti si annoverano Bionat ltalia S.r.l., Biosensornat S.r.l., Università degli
Studi di Salerno con il Dipartimento di Farmacia e l’ Università degli Studi di Padova con il
Dipartimento di Biorogia; mentre tra le collaborazioni esterne Agrumi-gel S.r.l.
Il progetto ha avuto come scopo quello di sviluppare e sperimentare soluzioni
tecnologicamente innovative, basate su componenti naturali, quali le pectine estratte
dagli agrumi o alcune molecole ad attività antimicrobica isolate dagli stessi prodotti su
cui verranno applicate, in grado di migliorare sensibilmente la shelf-life dei prodotti ittici
ed agricoli, settori dove il problema della conservazione dei prodotti nel periodo che
intercorre tra la raccorta e il consumo ha un elevato impatto sui costi
Pityriasis Rosea Induced by COVID-19 Vaccination
Get PDFIt is increasingly recognized that SARS-CoV-2 infection and COVID-19 vaccines have been associated with skin disorders, including pityriasis rosea. It has been reported that pityriasis rosea has been triggered by several vaccines, as a rare side-effect. We present two cases of COVID-19 vaccine-induced pityriasis rosea. Skin lesions appeared in a 49-year-old female 8 days after the first dose of the BNT162b2 mRNA vaccine and in a 53-year-old male 7 days after the second dose of the same vaccine. The exanthem was self-limited in both patients over a period of a month
A Severe Case of Molluscum Contagiosum Immune Reconstitution Inflammatory Syndrome in a Patient with Human Immunodeficiency Virus
Get PDFParadoxical immune reconstitution inflammatory syndrome (IRIS) in human immunodeficiency virus (HIV)-positive patients initiating antiretroviral treatment (ART) is caused by restored immunity to specific antigens, resulting in worsening of a pre-existing infection. Molluscum contagiosum (MC) is commonly noted in HIV-positive individuals but ART alone is usually sufficient to bring about resolution. We present a rare case of severe MC-IRIS that worsened despite immune reconstitution