15 research outputs found
Detection of Berezinskii-Kosterlitz-Thouless transition via Generative Adversarial Networks
No full textThe detection of phase transitions in quantum many-body systems with lowest possible prior knowledge of their details is among the most rousing goals of the flourishing application of machine-learning techniques to physical questions. Here, we train a Generative Adversarial Network (GAN) with the Entanglement Spectrum of a system bipartition, as extracted by means of Matrix Product States ans\"atze. We are able to identify gapless-to-gapped phase transitions in different one-dimensional models by looking at the machine inability to reconstruct outsider data with respect to the training set. We foresee that GAN-based methods will become instrumental in anomaly detection schemes applied to the determination of phase-diagrams
La biblioteca pubblica : contesti, modelli e linee di sviluppo : quaderno del percorso di formazione 2017
No full textQuaderno del percorso di formazione per biblitoecari organizzto in Friuli Venezia Giulia dalla locale Sezione AIB insieme al Servizio catalogazione, formazione e ricerca dell'ERPAC (Regione Friuli Venezia Giulia). Modulo 1: Le biblioteche e la pubblica lettura in Italia / Devid Panattoni e Roberta Garlatti; Modulo 2: La biblioteca pubblica: identità, spazi, modelli e organizzazione / Maurizio Vivarelli; Modulo 3: Organizzazione e recupero dell’informazione: linguaggi di indicizzazione e analisi del documento / Cristina Marsili e Silvia Bonfietti; Modulo 4: Organizzazione e recupero dell’informazione: i servizi di reference e l’information literacy nelle biblioteche pubbliche / Laura Ballestra e Elisa Zilli ; Modulo 5: Tecniche di comunicazione dei servizi bibliotecari, con particolare attenzione alla definizione degli strumenti in relazione al target. / Valentina Tosi; Modulo 6: English @t the circulation desk: aiutare gli utenti stranieri in biblioteca / Matilde Fontanin
Immunizzazione di stadi giovanili di branzino (D. labrax) con un vaccino commerciale contro la vibriosi: monitoraggio della risposta immunitaria mediante ELISA e chemiluminescenza
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Valutazione della risposta anticorpale e della protezione indotta da un vaccino per immersione anti Yersinia ruckeri in trota iridea (Oncorhynchus mykiss)
No full textVaccini costituiti da batteri della specie Yersinia ruckeri, inattivati con formalina e somministrabili tramite immersione, sono disponibili in USA e in Europa a partire dalla fine degli anni ’70, per la profilassi della bocca rossa o “Enteric Redmouth Disease” (ERM). Nonostante siano state affrontate numerose prove sperimentali per indagare l’esito di questo intervento di profilassi in trota iridea (Oncorhynchus mykiss) risulta ancora poco definita la correlazione fra titoli anticorpali specifici e protezione indotta dal vaccino. L’obiettivo di questa indagine è stato quello di valutare in vivo la protezione indotta da un vaccino commerciale somministrato per immersione (30 secondi) a trote iridee di 5 grammi, tramite infezione sperimentale con un ceppo virulento di Yersinia ruckeri e di studiare la risposta anticorpale specifica indotta dal medesimo vaccino nelle settimane successive alla somministrazione. Tramite la tecnica di agglutinazione in micropiastra è stato possibile evidenziare la presenza di anticorpi agglutinanti nel siero dei soggetti trattati a partire da 7 settimane dopo la vaccinazione. La tecnica ELISA indiretta ha dimostrato una maggiore sensibilità, evidenziando titoli anticorpali significativamente più elevati rispetto ai controlli, a partire da 5 settimane dopo la vaccinazione. La percentuale relativa di sopravvivenza o RPS, collegata all’efficacia protettiva conferita dal vaccino commerciale, è risultata pari al 77% in seguito a prova di infezione intraperitoneale con 3x106 UFC/sogg., effettuata a 7 settimane dalla vaccinazione. Tale riscontro consente di ipotizzare che gli anticorpi sierici prodotti in seguito alla immunizzazione tramite immersione siano protettivi nei confronti della malattia
Implications of obesity on clinical outcomes in acute decompensated heart failure across the left ventricular ejection fraction spectrum and right ventricular dysfunction
No full textAims: The implications of obesity on phenotype presentation and outcomes in acute decompensated heart failure (ADHF) are relatively unexplored. The aim of this study was to investigate the characteristics and prognostic implications related to obesity in ADHF, according to left ventricular and right ventricular function. Methods: Consecutive patients hospitalized for ADHF were retrospectively enrolled. Obesity was defined as BMI at least 30kg/m2. Patients were classified according to the range of left ventricular ejection fraction (LVEF) and to the presence of right ventricular dysfunction (RVD). The primary outcome was 1-year all-cause mortality or rehospitalization for ADHF (HFH). Results: Two thousand and ninety-eight patients were enrolled; 27% had BMI at least 30kg/m2. Obese patients were younger, more frequently men and diabetic, with higher blood pressure and lower natriuretic peptides; they had smaller left ventricular volumes, lower pulmonary arterial systolic pressure, and lower prevalence of mitral or tricuspid regurgitation. In heart failure with reduced LVEF, obese patients were treated with higher dosages of antineurohormonal drugs and diuretics. At multivariable logistic regression analysis, obesity was an independent predictor of heart failure with preserved ejection fraction (HFpEF) phenotype [odds ratio (OR)=2.046, P=0.012] and of RVD (OR=1.711, P=0.034). At adjusted analysis, obesity was independently associated with a lower risk of 1-year mortality/HFH (hazard ratio=0.608, P=0.003), consistently across LVEF subgroups and presence/absence of RVD. RVD was associated with a higher risk of 1-year mortality/HFH in nonobese but not in obese patients. Conclusion: Obesity was highly prevalent (27%) in ADHF and associated with a lower risk of 1-year mortality or HFH. Obesity was an independent predictor of HFpEF phenotype and of RVD, but RVD was associated with higher mortality/morbidity risk only in nonobese patients
Sviluppo di substrati trasparenti elettrofilati come modelli in vitro per patologie muscolari
No full textLAUREA MAGISTRALEnessunonessun
Dynamic evolution of tricuspid regurgitation during hospitalization in patients with acute decompensated heart failure
No full textAims: Secondary tricuspid regurgitation (TR) is associated with poor prognosis in acute decompensated heart failure (ADHF). However, its dynamic evolution in response to volume status and treatment has never been previously investigated. In this study, we sought to explore the in-hospital evolution of TR in ADHF patients and to assess its prognostic implications. Methods and results: We retrospectively enrolled patients admitted for ADHF with ≥2 in-hospital echocardiographic evaluations of TR. Patients were categorized, according to TR evolution, into persistent moderate-severe TR, improved TR (from moderate-severe to trivial-mild) and persistent trivial-mild TR. The primary endpoint was a composite of 5-year all-cause mortality and heart failure hospitalization (HFH). A total of 1054 patients were included. Of 318 patients (30%) with moderate-severe TR at admission, 49% improved TR severity and showed better trends of decongestion, whereas those who maintained persistent moderate-severe TR had characteristics of more severe heart failure at admission and discharge. Atrial fibrillation, previous heart failure and higher dosage of loop diuretics before admission were associated with a lower probability of improved TR. After adjustment, improved TR was associated with lower risk of 5-year all-cause mortality/HFH compared with persistent moderate-severe TR (hazard ratio [HR] 0.524, p = 0.008) and no different from persistent trivial-mild TR (HR 0.878, p = 0.575). Results were consistent across all subgroups of in-hospital variation of mitral regurgitation. Conclusion: Among ADHF patients with moderate-severe TR at admission, 49% had an in-hospital improvement in TR severity, which was associated with a reduction in risk of 5-year all-cause mortality and morbidity outcomes
cleared with the author or authors. Do European Capital Flows Comove? ∗
No full textThe views expressed are those of the individual authors and do not necessarily reflect official positions of the Federal Reserve Bank of St. Louis, the Federal Reserve System, or the Board of Governors. Federal Reserve Bank of St. Louis Working Papers are preliminary materials circulated to stimulate discussion and critical comment. References in publications to Federal Reserve Bank of St. Louis Working Papers (other than an acknowledgment that the writer has had access to unpublished material) should b
A High School Students’ Geophysical Survey in a Seismically Active Area: The PRESS40 Project
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