A Search for Ultra-high-energy Neutrinos from TXS 0506+056 Using the Pierre Auger Observatory

2020

Results of a search for ultra-high-energy neutrinos with the Pierre Auger Observatory from the direction of the blazar TXS 0506+056 are presented. They were obtained as part of the follow-up that stemmed from the detection of high-energy neutrinos and gamma rays with IceCube, Fermi-LAT, MAGIC, and other detectors of electromagnetic radiation in several bands. The Pierre Auger Observatory is sensitive to neutrinos in the energy range from 100 PeV to 100 EeV and in the zenith-angle range from θ = 60° to θ = 95°, where the zenith angle is measured from the vertical direction. No neutrinos from the direction of TXS 0506+056 have been found. The results were analyzed in three periods: One of 6 m…

The Pierre Auger Observatory scaler mode for the study of solar activity modulation of galactic cosmic rays

2011

Since data-taking began in January 2004, the Pierre Auger Observatory has been recording the count rates of low energy secondary cosmic ray particles for the self-calibration of the ground detectors of its surface detector array. After correcting for atmospheric effects, modulations of galactic cosmic rays due to solar activity and transient events are observed. Temporal variations related with the activity of the heliosphere can be determined with high accuracy due to the high total count rates. In this study, the available data are presented together with an analysis focused on the observation of Forbush decreases, where a strong correlation with neutron monitor data is found.

Segnalazione di un caso di trombosi sistemica massiva neonatale

2012

Measurement of the Proton-Air Cross Section at root s=57 TeV with the Pierre Auger Observatory

2012

We report a measurement of the proton-air cross section for particle production at the center-of-mass energy per nucleon of 57 TeV. This is derived from the distribution of the depths of shower maxima observed with the Pierre Auger Observatory: systematic uncertainties are studied in detail. Analyzing the tail of the distribution of the shower maxima, a proton-air cross section of [505±22(stat)-36+28(syst)]mb is found. © 2012 American Physical Society.

Patterns of infections in older patients acutely admitted to medical wards: data from the REPOSI register

2019

In older adults infections are among the leading causes of emergency department visits, hospitalization, morbidity and mortality [1–3]. Infections also occur as adverse events during hospitalization, as highlighted by the large use of antibiotics in this setting, resulting in an increase of hospitalization length and mortality rate [4–6]. There is a paucity of studies, especially in European countries, that did offer a general pattern on all the types of infections occurring in acutely hospitalized older patients, being the literature mainly focused on single type of infections (i.e. pneumonia and urinary tract infections). To fill this gap of knowledge, we chose to observe and describe the…

Delphi: dall'omphalos cosmico al Museo Archeologico

2009

The permanent exhibition in the Archaeological Museum, which focuses on the history of the Delphic temenos and the events related to the famous oracle and omphalos, is analyzed through the complex and delicate relationship which the contemporary museum building has established with his context, as the archaeological site of Delphi can be read as an open-air museum, which was able to accumulate and settle inside its perimeter, in a variety of declinations, the architecture and the art of ancient Hellas.

Erratum: The lateral trigger probability function for the ultra-high energy cosmic ray showers detected by the Pierre Auger Observatory (Astroparticl…

2012

The Fig. 7, originally consisting of 4 panels, was truncated in the printed version (the last panel was missing). The complete version is printed again

Antibiotic use and associated factors in a large sample of hospitalised older people

2019

Objectives: The aims of this study were to assess (i) the prevalence of antibiotic use, (ii) factors associated with their use and (iii) the association with in-hospital mortality in a large sample of hospitalised older people in Italy.Methods: Data were obtained from the 2010-2017 REPOSI register held in more than 100 internal medicine and geriatric wards in Italy. Patients aged >= 65 years with at least one antibiotic prescription during their hospitalisation were selected. Multivariable logistic regression models were used to determine factors associated with antibiotic use.Results: A total of 5442 older patients were included in the analysis, of whom 2786 (51.2%) were prescribed anti…

Disability, and not diabetes, is a strong predictor of mortality in oldest old patients hospitalized with pneumonia

2018

Abstract Background Pneumonia causes more deaths than any other infectious disease, especially in older patients with multiple chronic diseases. Recent studies identified a low functional status as prognostic factor for mortality in elderly patients with pneumonia while contrasting data are available about the role of diabetes. The aim of this study was to evaluate the in-hospital, 3-month and 1-year mortality in elderly subjects affected by pneumonia enrolled in the RePoSi register. Methods We retrospectively analyzed the data collected on hospitalized elderly patients in the frame of the REPOSI project. We analyzed the socio-demographic, laboratory and clinical characteristics of subjects…

Search for correlations between the arrival directions of IceCube neutrino events and ultrahigh-energy cosmic rays detected by the Pierre Auger Obser…

2016

This paper presents the results of different searches for correlations between very high-energy neutrino candidates detected by IceCube and the highest-energy cosmic rays measured by the Pierre Auger Observatory and the Telescope Array. We first consider samples of cascade neutrino events and of high-energy neutrino-induced muon tracks, which provided evidence for a neutrino flux of astrophysical origin, and study their cross-correlation with the ultrahigh-energy cosmic ray (UHECR) samples as a function of angular separation. We also study their possible directional correlations using a likelihood method stacking the neutrino arrival directions and adopting different assumptions on the size…

Liberty: sul restauro di Villa Antonietta a Palermo

2009

Tra le moltissime costruzioni Liberty a Palermo, quest’articolo descrive Villa Antonietta, un edificio poco noto e di oscura attribuzione. Di recente è stato realizzato un’intervento di restauro; qui per brevità, si descrivono soltanto alcune questioni legate al tema del colore nel Liberty che in questa Villa sono stati riproposti con principio filologico a partire dalle preesistenze presenti a Mondello dove la Villa ha sede.