Search results for "Verdi"
showing 10 items of 139 documents
Dragone, Francesco
2013
Il vino nell'opera tra convito ed ebbrezza
2022
Opera e vino sono senz'altro un connubio felice: a chiunque frequenti anche solo sporadicamente il teatro d'opera verrà in mente il famoso "Libiamo" del I atto della Traviata, nel quale si celebra il vino che abbellisce la notte e rende più caldi i baci degli amanti. Nell'opera italiana dell'Ottocento il brindisi (lieto o funesto) è un momento topico, con specifici connotati musicali e drammaturgici; la sua dimensione corale è assente nell'opera barocca, dove invece il vino serve a stigmatizzare i vizi umani. Dopo aver passato in rassegna alcuni dei più celebri momenti in cui vino e opera si uniscono, ci si soffermerà sulla figura comica dell'ubriacone nell'opera del Seicento e se ne metter…
Verdi e Wagner, la nazione all'opera
2013
Involvement of nitrate reductase and pyoverdine in competitiveness of Pseudomonas fluorescens strain C7R12 in soil
2001
ABSTRACT Involvement of nitrate reductase and pyoverdine in the competitiveness of the biocontrol strain Pseudomonas fluorescens C7R12 was determined, under gnotobiotic conditions, in two soil compartments (bulk and rhizosphere soil), with the soil being kept at two different values of matric potential (−1 and −10 kPa). Three mutants affected in the synthesis of either the nitrate reductase (Nar − ), the pyoverdine (Pvd − ), or both (Nar − Pvd − ) were used. The Nar − and Nar − Pvd − mutants were obtained by site-directed mutagenesis of the wild-type strain and of the Pvd − mutant, respectively. The selective advantage given by nitrate reductase and pyoverdine to the wild-type strain was as…
Human Biliverdin Reductase Suppresses Goodpasture Antigen-binding Protein (GPBP) Kinase Activity
2010
The Ser/Thr/Tyr kinase activity of human biliverdin reductase (hBVR) and the expression of Goodpasture antigen-binding protein (GPBP), a nonconventional Ser/Thr kinase for the type IV collagen of basement membrane, are regulated by tumor necrosis factor (TNF-α). The pro-inflammatory cytokine stimulates kinase activity of hBVR and activates NF-κB, a transcriptional regulator of GPBP mRNA. Increased GPBP activity is associated with several autoimmune conditions, including Goodpasture syndrome. Here we show that in HEK293A cells hBVR binds to GPBP and down-regulates its TNF-α-stimulated kinase activity; this was not due to a decrease in GPBP expression. Findings with small interfering RNA to h…
Per un ripensamento dello standard in chiave prestazionale: un caso studio a Palermo
2017
Il contributo nasce dallo studio dell’esperienza di Parco Uditore, un'area verde di Palermo, diventata nel 2012 parco pubblico in seguito a una mobilitazione civica. L'apertura del parco in una circoscrizione che, parimenti alle altre a Palermo, risulta carente di aree attrezzate ha indotto un ragionamento sull'ipotesi di stabilire dei parametri prestazionali, oltre che di superficie, per gli spazi pubblici verdi. Seguendo una metodologia induttiva e comparativa, rispetto a modelli sperimentati in altri contesti, il contributo si propone di verificare se dall’osservazione del caso di Parco Uditore sia possibile estrapolare parametri prestazionali da affiancare alla dotazione minima dello st…
A Bayesian Sequential Look at u-Control Charts
2005
We extend the usual implementation of u-control charts (uCCs) in two ways. First, we overcome the restrictive (and often inadequate) assumptions of the Poisson model; next, we eliminate the need for the questionable base period by using a sequential procedure. We use empirical Bayes(EB) and Bayes methods and compare them with the traditional frequentist implementation. EB methods are somewhat easy to implement, and they deal nicely with extra-Poisson variability (and, at the same time, informally check the adequacy of the Poisson assumption). However, they still need the base period. The sequential, full Bayes approach, on the other hand, also avoids this drawback of traditional u-charts. T…
Modeling accident risk at the road level through zero-inflated negative binomial models: A case study of multiple road networks
2021
Abstract This paper presents a case study carried out in multiple cities of the Valencian Community (Spain) to determine the effect of sociodemographic and road characteristics on traffic accident risk. The analyzes are performed at the road segment level, considering the linear network representing the road structure of each city as a spatial lattice. The number of accidents observed in each road segment from 2010 to 2019 is taken as the response variable, and a zero-inflated modeling approach is considered. Count overdispersion and spatial dependence are also accounted for. Despite the complexity and sparsity of the data, the fitted models performed considerably well, with few exceptions.…
Degree course change and student performance: a mixed-effect approach
2015
This paper focuses on students credits earning speed over time and its determinants, dealing with the huge percentage of students who do not take the degree within the legal duration in the Italian University System. A new indicator for the performance of the student career is proposed on real data, concerning the cohort of students enrolled at a Faculty of the University of Palermo (followed for 7 years). The new indicator highlights a typical zero-inflated distribution and suggests to investigate the effect of the degree course (DC) change on the student career. A mixed-effect model for overdispersed data is considered, with the aim of taking into account the individual variability as wel…
Lead-time and overdiagnosis estimation in neuroblastoma screening.
2003
In Germany, neuroblastoma is the most frequent extracranial solid childhood tumour. Its properties made it seem an ideal candidate for screening. A German trial assessed the effect of screening at one year of age from 1995-2001 in a nationwide project. We present here the methods developed for the estimation of lead-time and overdiagnosis in this project. Follow up on 1.5 million screened children and 2.1 million control children is currently available until June 2002. Ascertainment of control cohort cases and false negative cases is complete up to this date. A method for determining an empirical lead-time distribution and overdiagnosis estimate from comparing the age specific incidences in…