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    The ESQUIRE project: Quantum Dots as scintillation detectors

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    The primary goal of ESQUIRE (Experiment with Scintillating Quantum dots for Ionizing Radiation Events) is the development of a new family of scintillation detectors based on scintillating nanocrystals coupled to high-quantumefficiency solid-state detectors. These detectors will be designed for the search of neutrinoless double-beta decay (0νββ), therefore an excellent energy resolution in the region of interest for the study of 0νββ (∼2% around 3 MeV) is mandatory. One of the main advantages in this approach is the easy mass scalability, which makes ESQUIRE a competitive option for next-generation experiments. During the discussion the project goal will be presented, alongside the first optical characterization of QD samples

    Quando la scienza brancola nel buio: accordo di collaborazione tra l’Istituto dei Ciechi “Opere riunite I. Florio – F. ed A. Salamone” di Palermo e il CNR IAS di Capo Granitola

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    La convenzione oggetto del presente rapporto nasce nel contesto delle complesse attività di EduLab, gruppo di divulgazione scientifica che,seppur già attivo dal2008, nasce ufficialmente nel 2015e mette insieme ricercatori di varie discipline che condividono la passione di divulgare la scienza e i risultati da essa prodotti nei propri ambiti di competenza.La comunicazione scientifica, molto sentita e ben strutturata all’interno dell’IAS (ex. IAMC), ha portato a numerosi risultati e ad un numero ragguardevole di progetti e programmi, ed è un’attività ormai talmente ben consolidata da diventare organica all’istituto e alle sue strategie. I prodotti sviluppati sono tanti e anche i successi ottenuti, quali premi sulle attività di divulgazione, la partecipazione ad Expo 2015 ed a numerose edizioni in ambito di manifestazioni nazionali quali: Festival della Scienza, Esperienza insegna, Notte della scienza e Notte dei ricercatori, Illuminiamo la scienza. Grazie ad un curriculum unico e complesso, il gruppo è stato il driver della nascita dell’Osservatorio della Biodiversità della Regione Sicilia, oggi riferimento regionale per la didattica e la divulgazione scientifica sul tema della biodiversità, visitato ad oggi da più di 500 classi di studenti siciliani. Le ricadute culturali, di visibilità, nonché di immagine per l’istituto sono tantissime

    Implementazione con scheda STM32 NUCLEO® di un algoritmo per la modulazione della larghezza d’impulso di tipo casuale (Random PWM)

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    La tecnica di modulazione dei convertitori statici di potenza è fondamentale per garantire le prestazioni richieste e per minimizzare le emissioni elettromagnetiche. Infatti utilizzando una frequenza portante fissa si generano armoniche multiple della fondamentale sovrapposte alla tensione di uscita; se invece si fa variare la frequenza della portante le emissioni sono distribuite più uniformemente nello spettro di frequenze e si limita il contributo di singole frequenze. In commercio esistono vari circuiti integrati in grado di generare un segnale PWM con portante a frequenza fissa, tuttavia se si vuole studiare il comportamento facendo variare la frequenza in modo casuale è necessario implementare un algoritmo possibilmente su un sistema a basso costo. In questo rapporto tecnico sono descritti i metodi di simulazione e sperimentali adottati per implementare il controllo della commutazione di un convertitore DC-DC, di tipo elevatore (Boost) realizzato in laboratorio. La prassi adottata in tali metodi ha previsto la programmazione di un micro controllore (μCC), per la generazione del segnale di controllo. In particolare saranno confrontate due tipologie di controllo, denominate rispettivamente “tecnica di controllo con segnale PWM classico” e “tecnica di controllo con segnale Random PWM”. Tale confronto viene effettuato sull’analisi del fenomeno della ondulazione (Ripple), presente nella tensione e nella corrente di uscita ai convertitori. Il codice è stato implementato in modo da poter variare quando funziona in modalità random, sia la frequenza di scostamento rispetto alla frequenza centrale fissata pari a 20 kHz, sia il numero di impulsi di pilotaggio da applicare al gate dell'IGBT prima di aggiornare il valore della frequenza di switching secondo un numero random. La disponibilità di questi due gradi di libertà sarà utilizzata per minimizzare la densità spettrale della potenza, all’uscita del convertitore nel campo delle emissioni condotte

    Smart@POMPEII - Towards the Smart Archaeological Park of Pompeii

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    Il video, realizzato dai responsabili della cabina di regia (Alberto Bruni e Luca Papi) del progetto pilota MiBAC - CNR, denominato Smart@Pompei, è stato presentato durante l'evento Think2019 (San Francisco - 11, 12 febbraio 2019

    Good practices for the management of fragile territories resilience

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    Italy is a territory frequently affected by natural disasters that have a huge impact on urban transformations. The physical and socio-economical reconstruction process of a territory damaged by a traumatic event at first pursues the path of emergency management and subsequently the rehabilitation of the damaged areas. These political and economic strategies are still unsystematic, so it is difficult to predict either long or short term effects. This paper presents an analysis carried out on the city of L’Aquila following the earthquake of 2009, in which indicators were defined to assess and monitor the reconstruction process. The method used to define the indicators is ‘absolute’, in such a way as to represent a replicable model that can be adapted to different territorial and emergency contexts. Furthermore, the set of indicators proposed can be used not only to monitor the reconstruction process, but also to guide public policies and to suggest shared strategic guidelines, not originated by the urgency of after-shock conditions. The proposed model is a tool to be used from the early stages of reconstruction, in order to predict the outcome of the reconstruction itself. In this way, it is possible to manage urban transformation in a coherent and organic way in all its phases by adopting a single tool. The use of the model shown in the research also makes it possible to enhance the resilience of a territory by exploiting its intrinsic characteristics

    Severe Immune Thrombocytopenia Complicated by Intracerebral Haemorrhage Associated with Coronavirus Infection: A Case Report and Literature Review

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    IImmune thrombocytopenic purpura (ITP) is an autoimmune disorder that causes isolated thrombocytopenia. Many viruses have been identified as triggering the autoimmune process, including HIV, MCV, EBV, parvovirus, rubella and measles. However, ITP in association with coronavirus infection has not previously been reported. We describe the case of a healthy man who presented with severe ITP complicated by intracranial haemorrhage following upper respiratory tract infection. An infection screen revealed coronavirus infection

    Pancreatic Pseudocysts in the Mediastinal Space: An Urban Legend?

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    Pancreatic pseudocysts are a frequent complication of chronic pancreatitis. Nonetheless, they seldom extend beyond the peripancreatic region. However, migration towards the mediastinum may cause heterogeneous and non-specific symptoms, such as dysphagia, chest pain and dyspnoea, which depend on the localization and extension of the cysts. We present the case of a patient with chronic pancreatitis who was admitted to our ward for low-grade fever and mild dyspnoea and who rapidly developed bilateral laterocervical swelling associated with acute dyspnoea and trismus. A total body CT scan showed multiple abdominal pancreatic pseudocysts, one of which had migrated to the mediastinum and towards the retropharyngeal space. Clinicians should always consider the possibility of extra-pancreatic pseudocysts in patients with known pancreatitis so that uncommon clinical presentations with a potentially fatal outcome will be recognized

    Abstract Book of the 18th Conference in Internal Medicine. 29-31 August, 2019, Lisbon Congress Centre

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    Invasive Pneumococcal Disease Associated with Fanconi-Like Syndrome

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    Acquired causes of Fanconi syndrome in adults are usually due to drugs, toxins or paraproteinaemias. Infectious causes are rarely described. We report a case of invasive pneumococcal disease in a patient who developed a Fanconi-like syndrome during the course of her illness. This patient presented with multiple electrolyte derangements consisting predominantly of hypokalaemia, hypomagnesaemia and hypophosphataemia during hospitalization for invasive pneumococcal disease with possible Austrian syndrome. Further evaluation revealed significant urinary losses of these electrolytes, uric acid and β2-microglobulin. Together with evidence of hypouricaemia, this is suggestive of proximal renal tubulopathy, and hence a Fanconi-like syndrome. The patient’s clinical condition and biochemical anomalies improved following pneumococcus treatment

    Drug-Induced Aseptic Meningitis Following Spinal Anesthesia

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    Meningitis is a very uncommon complication of spinal anesthesia, and drug-induced aseptic meningitis (DIAM) is even rarer. We present two cases of DIAM following spinal anesthesia with bupivacaine and ropivacaine, respectively. The patients presented shortly after the procedure with typical meningitis symptoms. Since CSF (cerebrospinal fluid) analysis could not initially exclude bacterial meningitis, they were started on empirical antibiotics. CSF was subsequently found to be negative for viruses and bacteria in both cases, and antibiotics were promptly stopped. Both patients improved rapidly and without neurological sequelae. While it remains a diagnosis of exclusion, it is important to be aware of DIAM as recognition of the condition can lead to shorter admission times and avoid unnecessary use of antibiotics

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