Search results for "Verdi"
showing 10 items of 139 documents
Suppression of pigment interference in the gas chromatographic analysis of proteinaceous binding media in paintings with EDTA.
2004
A method to suppress the interference of pigments in the analysis of proteinaceous media used in paintings is presented in this paper. This method is based on the formation of metallic ion-ethylenediaminetetraacetic acid (EDTA) complexes previous to the derivatisation process, using ethyl chloroformate (ECF), to transform the amino acids in N(O,S)-ethoxycarbonyl (EOC) ethyl esters. Test specimens, containing different proteinaceous media such as albumin, porcine gelatine and casein mixed with lead white, chalk, verdigris and raw Sienna have been prepared for carrying out this study. Different pH conditions have been probed for the different pigments studied. Values of peak area ratio of ami…
Tetti verdi multistrato per lo sviluppo sostenibile di città resilienti: quattro casi studio italiani
2021
Negli ultimi anni le inondazioni in ambito urbano sono state sempre più frequenti, provocando notevoli danni sia livello sociale che a livello economico. Questo fenomeno è in parte determinato da un aumento di urbanizzazione causato dalla crescita della popolazione, che tende sempre più a spostarsi dalle zone rurali alle aree urbane, che si espandono molto velocemente, spesso con infrastrutture idrauliche inadeguate. Inoltre, a causa di cambiamenti climatici, soprattutto nelle aree mediterranee, si può osservare un aumento di lunghi periodi di siccità, intervallati da piogge di breve durata, ma di sempre più forte intensità e frequenza. La presenza di questi fenomeni di pioggia intensa, in …
Heme oxygenase-1 inhibits apoptosis in Caco-2 cells via activation of Akt pathway
2005
Heme oxygenase-1 can play a protective role against cellular stress. In colon cancer cells, these effects would be relevant to oncogenesis and resistance to chemotherapy. The aim of the study was to examine the effects of heme oxygenase-1 induction on cell survival in a human colon cancer cell line, Caco-2. Serum deprivation induced apoptosis, reduced Akt and p38 phosphorylation, and increased p21(Cip/WAF1) levels. Heme oxygenase-1 induction by treatment with cobalt protoporphyrin IX resulted in resistance to apoptosis, activation of Akt, reduction in p21(Cip/WAF1) levels and modification of bcl2/bax ratio towards survival. Indomethacin reduced apoptosis but in contrast to heme oxygenase-1,…
Overdiagnosis and overimaging: an ethical issue for radiological protection
2019
Aims and objectives: This study aimed to analyse the key factors that influence the overimaging using X-ray such as self-referral, defensive medicine and duplicate imaging studies and to emphasize the ethical problem that derives from it. Materials and methods: In this study, we focused on the more frequent sources of overdiagnosis such as the total-body CT, proposed in the form of screening in both public and private sector, the choice of the most sensitive test for each pathology such as pulmonary embolism, ultrasound investigations mostly of the thyroid and of the prostate and MR examinations, especially of the musculoskeletal system. Results: The direct follow of overdiagnosis and overi…
Crudeltà sociale, socialità crudele: dalla Dame aux camélias alla Traviata e oltre
2010
The essay deals with the Dame aux Camelias by Dumas son (both in the novelistic and in the theatrical form) and with other works taken from it, first of all the Traviata by Verdi.
Strategie ecosistemiche e infrastrutture verdi in simbiosi con il costruito
2022
Il numero 11 di AGATHÓN raccoglie saggi, studi, ricerche e progetti sul tema Vegetazione | La sua Simbiosi con il Costruito richiamando il ruolo che la Natura in generale e la Vegetazione in particolare possono svolgere nel breve periodo per affrontare l’attuale sfida del surriscaldamento globale e dei cambiamenti climatici causati da deforestazioni e incendi boschivi, urbanizzazioni selvagge, uso indiscriminato di materie prime non rinnovabili e incremento delle emissioni di anidride carbonica, tutti fattori che determinano un impatto devastante sul nostro ormai fragile ecosistema, sulla società e sull’economia. Se Simon aveva intuito già nel 1969 il potenziale di una ‘nuova ecologia’ in c…
Handling Underdispersion in Calibrating Safety Performance Function at Urban, Four-Leg, Signalized Intersections
2011
Poisson basic assumption of equidispersion is often too much restrictive for crash count data; in fact this type of data has been found to often exhibit overdispersion. Underdispersion has been less commonly observed, and this is the reason why it has been less convenient to model directly than overdispersion. Overdispersion and underdispersion are not the only issues that can be a potential source of error in specifying statistical models and that can lead to biased crash-frequency predictions; these issues can derive from data properties (temporal and spatial correlation, time-varying explanatory variables, etc.) or from methodological approach (omitted variables, functional form selectio…
Monteverdi in the garden: L'Incoronazione di Poppea in Fascist Florence
2022
On June 3, 1937, in the amphitheatre of the Boboli Gardens in Florence, L’incoronazione di Poppea by Claudio Monteverdi was performed by an ensemble of remarkable artists. It was the first stage performance of the opera in Italy in modern times. This article aims to reconstruct the historical context and details of this performance, which can be considered emblematic in many ways of the reception of ancient music in Italy in those years. In the first part I will discuss this performance in the context of Fascist Florence, showing how it served to celebrate Florence’s cultural primacy. In the second part, I will deal with L'incoronazione's prior performances in Italy and abroad. In the third…
La "Messa da Requiem" di Giuseppe Verdi fra sacro e profano. Un allestimento ottocentesco attraverso le carte del Fondo Usiglio
2010
Attraverso la ricostruzione di un allestimento della "Messa da Requiem" di Giuseppe Verdi al Duomo di Orvieto nel 1891, l'articolo riflette sui metodi di produzione dello spettacolo, mostrando come, nonostante il contesto sacro, la macchina gestionale fosse quella tipica dell'industria operistica coeva, con un ruolo di primissimo piano esercitato dal direttore d'orchestra, Emilio Usiglio.
Verdi «directeur de la musique» del Théâtre Italien (1855): il fallimento di un progetto ambizioso
2014
L'articolo ricostruisce il progetto, fallito, di nomina di Giuseppe Verdi a direttore artistico del teatro Italien di Parigi nel 1855.