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K+ → π+νν¯ with NA62: 2016 results and prospects
Get PDFThe ultra rare K → πνν¯ process is one of the theoretically cleanest meson decay where to look for a stringent test of the Standard Model (SM). The NA62 experiment at CERN SPS is designed to measure the branching ratio of the K+ → π+νν¯ decay with 10% precision. After commissioning, in 2016 first data set good for physics has been collected. The data taking is foreseen till the LS2 at the end of 2018. Results obtained with the full 2016 data sample will be presented togheter with prospects for 2017 and 2018 data sets
On some evidences of a new kind of signal of cosmological origin
No full textSuitable electronic circuits used as antennae are capable to detect an unknown signal, showing very similar daily spectrograms even if detectors containing them are placed at a distance of thousand of kilometers from each other independently from environmental conditions or difference in longitude of the different spots where the detectors are placed. The daily spectral features of signals detected at different places still remain the same in the range of mHz where the spectral amplitude reaches a peak. As a matter of fact parts of the spectral patterns captured are time delayed of about (3.944 ± 0.009) min/dies at 95% CL as shown by auto-correlation statistics. There are also evidences of diurnal and annual modulation and the experiments suggest a dependence of the time delayed of signals revealed by two antennae on the relative motion of the Earth with respect to a medium at a speed roughly ranging from about 30 km/s up to 380 km/s. A possible explanations of the modulation of the signal in terms of superposition of at least three streams are briefly discussed at the end of the paper, as well as the problem of the nature of this noise, whether it is electromagnetic from its emission or it is the result of an oscillation of mixing particles. The signal is incredibly so intense as to both cover, at least partially, the amount of dark energy in the universe and to explain cosmological red shift in terms of gravitational red shift
La fotomodellazione per il rilievo archeologico
Get PDFThe paper addresses the theme of photomodelling techniques supporting archaeological survey and of the role played by the contemporary archaeologist dealing with computing and information technology. In particular, photomodelling, being a simple and economical technique, for years has gained ground in the archaeological survey as an efficient instrument to respond to the needs for documentation, study, and communication, which are inherent to digitization. Likewise, in the enhancement of perceptive aspects and in computation automatisms, which are at the basis of the models’ genesis, some pitfalls can be hidden that may lead to underestimate the centrality of interpretation. The critical analysis proposed aims at underlying the contribution of digital techniques, by analysing their reliability and their possible application to the traditional design. The paper compares some examples of archaeological data survey conducted in the Umbria region, in the last fifty years, from the point of view of experts involved in representation studies, and tries to capture the peculiarities that are still valid in the current transformation of graphic representation tools
Editoriale
Get PDFLa questione della tutela dei minori assume il significato di un problema aperto che deve far riflettere a livello criminologico e vittimologico
Gestire la geografia della complessità, dai dati alle storie: il progetto ‘percorsi biografici’ tra archeologia pubblica e rigenerazione urbana
Get PDFPercorsi BioGrafici is a project conducted by the Archaeological Department of the University of Siena in collaboration with the Municipality of Monforte San Giorgio (Messina, Italy). The project examines Monforte through time, starting from an intensive survey of the modern town and the mapping of all the building units. The method relies on a contextual approach, the use of modern technology (a GIS and a wiki platform) to register the data, and a community-based archaeological practice to foster social and economic sustainability and shared knowledge. The whole dataset was gathered in a non-invasive manner, combined with archive material, oral sources and the works of local historians. The resulting set of fresh information was circulated both through city tours and by artistic and urban regeneration projects, developed together with artists and architects. Using open source software (QGIS and Mediawiki) and a free storytelling platform (izi.TRAVEL) has allowed the local administration and community to take part in the research process
Pneumomediastinum in a Heavy Weightlifter
Get PDFThe presence of air in the mediastinal cavity (i.e., pneumomediastinum) is an uncommon condition. It is usually precipitated by an event such as penetrating trauma, barotrauma or increased intrathoracic pressure caused by severe vomiting or coughing. We present the case of a 32-year-old man who developed pneumomediastinum as a result of heavy weightlifting
A 28-Year-Old Woman with Ascites and Multiple Focal Spleen Lesions
Get PDFSerous effusions complicating the course of lymphomas occur commonly in the pleural space but seldom in the peritoneum, where they most often present as chylous ascites with diagnostic cytology. Almost invariably, in these rare cases, the serum to ascites albumin gradient is low. We describe a 28-year-old woman with anasarca, ascites and a serum to ascites albumin gradient of 1.1 g/dl, consistent with portal hypertension. No tumour cells were detected in the ascitic fluid. However, a CT scan of the chest and abdomen disclosed liver and spleen enlargement and multiple enlarged retroperitoneal lymph nodes, suspicious for a lymphoproliferative disorder. Bone marrow aspiration and biopsy were not diagnostic, so a decision was made to proceed with a splenectomy despite the onset of low-grade disseminated intravascular coagulation.
Surgery was uneventful. Diffuse large B cell lymphoma was diagnosed. A liver biopsy taken at the time of surgery demonstrated that the liver parenchyma was massively infiltrated by reactive T lymphocytes surrounding rare large CD20+ tumour cells. This infiltrate had likely led to increased portal pressure attended by ascites formation, which resolved completely after chemotherapy. The case emphasizes the rewards of pursuing a diagnosis supported by a high prior probability even in the presence of apparently discordant laboratory findings, as well as the importance of performing a diagnostic splenectomy in case of splenomegaly with unexplained focal lesions
Bilateral Internuclear Ophthalmoplegia in a Young Woman with Vertebral Artery Dissection
Get PDFBackground: Internuclear ophthalmoplegia (INO) is an eye movement disorder caused by a lesion in the medial longitudinal fasciculus (MLF)
located in the midbrain. Adduction paralysis of both eyes and bilateral abduction nystagmus are the main features of INO[1].
Case presentation: A 29-year-old Hispanic woman was admitted to the emergency department complaining of an intense holocranial
headache lasting 9 days, associated with nausea and vomiting. She was discharged home with resolution of the headache but persistence
of symptoms. However, she subsequently developed horizontal diplopia and gait abnormalities. She was readmitted to hospital because of
anomalous eye movements and conjugate gaze palsy, manifested as bilateral INO. Magnetic resonance angiography (MRA) findings were
consistent with dissection of the left V4 vertebral artery with multiple brain infarcts in the superior cerebellar artery territory, comprising
both MLF tracts.
Conclusions: In young adults, bilateral INO is normally caused by demyelinating disease. In other patients, common causes include trauma,
infections and autoimmune diseases with neurological symptoms. Vascular disease is implicated in over a third of cases
Il Consiglio Nazionale delle Ricerche e la promozione delle scienze sociali. Un’analisi dei progetti di ricerca finanziati (1964-1999)
Get PDFLa ricerca si propone una analisi delle politiche pubbliche e dei principali progetti di ricerca nell’ambito delle scienze sociali, avviate e gestite dal CNR a partire dalla metà degli anni Sessanta del Novecento. Scopo dello studio è quello di analizzare l’evoluzione della ricerca pubblica e, nello specifico, il contributo del CNR alla promozione delle scienze sociali, all’indomani della “riforma Polvani”, attraverso un’indagine sui progetti finanziati dal Comitato per le scienze economiche, sociologiche e statistiche dal 1964 al 1999 – anno di soppressione dei Comitati nazionali di consulenza - e sul ruolo che ebbe l’ente nello sviluppo di disegni di ricerca volti ad esplorare e interpretare i processi di modernizzazione del Paese.
Muovendo da questa grande disponibilità di dati quantitativi, l’indagine si è basata su due approcci: da una parte sono state analizzate le politiche scientifiche e i destinatari dei finanziamenti dell’ente nel campo delle scienze sociali dal tempo della “riforma Polvani”, con un’attenzione particolare alla loro evoluzione e ai mutamenti di obiettivi e fisionomia; dall’altra, attraverso l’incrocio dei dati estratti, sono stato osservati gli orientamenti della promozione della ricerca sociale, per stabilire se e in che misura il CNR, attraverso i propri investimenti scientifici, contribuì ad affermare una cultura della ricerca empirica all’altezza delle sfide che definirono l’articolato processo di modernizzazione del Paese
I borghi del Cilento tra protezione ambientale e valorizzazione turistica
Get PDFLa promozione di itinerari turistici va sempre più svincolandosi da una dimensione
ridotta e diviene strumento di recupero, riqualificazione e valorizzazione di quelle aree
ormai da tempo marginalizzate. In questa prospettiva, i temi dell’accessibilità, dello
sviluppo sostenibile e dell’investimento nelle nuove tecnologie assumono una estrema
rilevanza. Disporre il territorio di un’adeguata rete infrastrutturale, utilizzare le
moderne ICT ed assicurare vantaggi sia al turista che al sito significa dare il via ad una
serie di iniziative finalizzate alla rivitalizzazione economica, culturale, demografica ed
ambientale dell’intera compagine territoriale. Partendo da un inquadramento teorico
rispetto al ruolo svolto dalle aree protette nelle politihea di valorizzazione delle risorse
e di sviluppo sostenibile e alla impossibilità di scindere tali obiettivi dalla protezione
del paesaggio e dal coinvolgimento delle popolazioni locali, si è analizzato il contesto
del Parco Nazionale del Cilento dove appaiono chiari i segni di uno squilibrio
territoriale tra aree interne e costiere e dove, nello stesso tempo, la ricchezza del
patrimonio materiale ed immateriale rappresenta una reale potenzialità per il rilancio
dei borghi interni. Saranno dunque delineati alcuni itinerari nei quali includere i centri
rurali e montani per incrementare, in controtendenza rispetto alle direttrici attuali, i
flussi turistici verso le aree interne dove potrebbero ottenersi ricadute positive in
termini economici e sociali