174,839 research outputs found
Riflessioni e proposte intorno ai laboratori di sintesi finale
No full textIndagine condotta da S. Maffioletti e P. Grandinetti sui costituendi Laboratori di sintesi finale per la redazione delle tesi di laurea attraverso il dialogo con 38 docenti, tra i quali A. Rossi, V. Gregotti, G. Polesello, C. Aymonino, A.R. Burelli, F. Dal Co, V. Pastor, F. Purini, A. Rudi, L. Semerani, F. Venezia...
Con un contributo di S. Maffioletti (pp. 59-62)
Bellini e Vaccaj : peripezie di un finale
No full textÈ noto a tutti che il finale dei Capuleti e Montecchi di Bellini (1830) fu quasi subito sostituito dalle scene omologhe dell’opera di Vaccaj sullo stesso soggetto, Giulietta e Romeo (1825), e che tale sostituzione divenne prassi comune per tutto il corso dell’Ottocento. La prassi è attribuita al capriccio della Malibran, che cantando a Bologna nel 1832 sarebbe rimasta insoddisfatta del finale belliniano, poco adatto alle velleità esibizionistiche di una primadonna. Il finale dell’opera di Vaccaj, in effetti, mette in risalto alcuni momenti lirici (tra i quali il celebre “Ah! se tu dormi svegliati”), strutturati come pezzi chiusi, ed è calato nelle forme della tradizione italiana con tutte le sue chiare articolazioni, mentre il finale dell’opera di Bellini, indirizzato a una maggiore concisione e tensione drammatica, trapassa elasticamente dal recitativo all’arioso e non presenta scansioni formali altrettanto nette. È probabile che per gli interpreti e per il pubblico italiano dell’epoca la musica di Vaccaj, che alterna con regolarità momenti dinamici e stasi liriche formalizzate e subordina l’azione drammatica al canto, suonasse più familiare della musica di Bellini, che nel finale dei Capuleti concede poco alle convenzioni belcantistiche e alle aspettative comuni.
L’evidenza documentaria mostra, tuttavia, una situazione piuttosto articolata. Intanto non fu la Malibran che operò per prima la sostituzione: la prassi venne inaugurata già nel marzo del 1831 a Firenze, ad opera della Ferlotti. La sostituzione, inoltre, fu preparata da un giudizio largamente diffuso e condiviso: sin dalle prime rappresentazioni l’opera di Bellini venne messa a confronto con quella di Vaccaj, e il paragone si risolse, in genere, in favore del predecessore. I giudizi formulati nelle recensioni e negli scritti critici, tuttavia, non sono del tutto concordi. Mentre i più predilessero il finale di Vaccaj, e persino quello della vecchia opera di Zingarelli (1796) sullo stesso soggetto drammatico, altri protestarono contro l’abuso della sostituzione e mostrarono di apprezzare la novità e il valore del finale originario. Fra questi ultimi rientra Romani, l’autore del testo poetico delle due opere, che innescò una violenta polemica contro la manomissione del libretto e della partitura dei Capuleti e Montecchi. Ci furono anche cantanti, come la Ronzi De Begnis, che andarono controcorrente ripristinando il finale di Bellini.
Per tutto l’Ottocento, nondimeno, I Capuleti e i Montecchi furono eseguiti con il finale sostituito. Il giudizio estetico venne ribaltato solo nel Novecento, a partire da Pizzetti, che riconobbe al finale belliniano tutto il suo valore drammatico, e più ancora dalle rappresentazioni del centenario, nel 1935, che fecero da preludio al rientro definitivo in repertorio dell’opera belliniana
Soluble/insoluble (dilute-HCl-extractable) fractionation of Cd, Pb and Cu in Antarctic snow and its relationship with metal fractionations in the aerosol
No full textA chemical fractionation methodology for determination of the (water) soluble and the insoluble (dilute-HCl-extractable) fractions of Cd, Pb and Cu in Antarctic snow was set-up and verified for the additivity of the two fractions detected. Molten samples were filtrated and the water-insoluble fraction was extracted by dilute ultrapure HCl (pH ~1.5). Metal determinations were carried out in the two fractions by square wave anodic stripping voltammetry. The total metal concentrations in samples collected in the 2000–2001 austral summer in a clean area (Faraglione Camp) in the neighbourhood of the Mario Zucchelli Italian Station were of the order of Cd 10-20 pg g−1, Pb 20–40 pg g−1, Cu 60–120 pg g−1 with an approximate equidistribution between soluble and insoluble fractions. These fractionations compare well (and show a quite consistent temporal trend) with those observed in the aerosol samples collected in the same area/period and confirm the close relationship between metal distributions in snow/ice and in the aerosol. At the station metal concentrations increase due to anthropic contribution and the distribution changes with Cd predominantly present in the soluble fraction (~80%), while Pb and Cu are more concentrated in the insoluble fraction, 70–80% and ~70%, respectively
Cd, Pb and Cu in spring waters of the Sibylline Mountains National Park (Central Italy), determined by square wave anodic stripping voltammetry
No full textSquare wave anodic stripping voltammetry (SWASV) was used to determine Cd, Pb and Cu in spring waters of the Sibylline Mountains National Park, Central Italy. Samples were collected from three different areas of the Park (Mount Bove North, Mount Bove South and Springs of River Nera) during the period 2004-2011. Physical-chemical parameters were also determined to obtain a general characterization of the waters. Very low metal concentrations were observed (i.e., Cd 1.3±0.4 ng L-1, Pb 13.8±5.6 ng L-1, Cu 157±95 ng L-1), well below the legal limits and also below the medians of known Italian and European data. Comparing the three areas it was noted that waters from the area of the Nera Springs are the poorest in heavy metals and the richest in minerals, that conversely the waters of Mt. Bove North are the richest in heavy metals and the poorest in mineral salts, and finally that intermediate values both for heavy metals and mineral salts were observed for the waters of Mt. Bove South
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Analisi archeometriche in microscopia ottica di ceramiche neolitiche dall’Arma dell’Aquila (Finale Ligure, Savona) nel quadro delle produzioni preistoriche del Finalese
No full textThe petrographic study has allowed us to recognize the majority of the ceramics of the Aquila rock shelter as
productions of the Finale area, although the compositional and textural/technical variability highlights a variety of sites of production or procurement of raw materials. In these cases, the pastes are characterised by inclusions well compatible with the Permo-Carboniferous metamorphic rocks or with Mesozoic limestones outcropping locally. However, the discovery of some samples with inclusions derived from gneiss and amphibolite, absent in strictly local area, though outcropping in the neighbouring territory of the Hercynian basement, can testify instead human mobility within the region, both in the Early and Middle Neolithic. The preliminary comparison with the data available for the first ceramic productions of Liguria in general, and the Finale in particular, seems to confirm the model that demonstrates the existence, alongside a more consistent pottery production of local origin, of some ceramic containers produced in
allochthonous areas, even though in this specific case long-distance provenances are not represented
04 Finale (Anton Bruckner: Symphony No. 8 in C minor) [20:42] (KD 25, 1 CD)
No full textStück: Finale
Werk: Symphony No. 8 in C minor (1890 version)
Komposition: Anton Bruckner (1824 - 1896)
Interpret*innen: Orchestra of the University of Music and Dramatic Arts Graz, Conductor: Martin Sieghart
Album: Anton Bruckner Symphony No. 8 in C minor (1890 version), Orchestra of the University of Music and Dramatic Arts Graz; 2003 (KUG KD 25, 1 CD) © Kunstuniversität Graz
Format: mp
Un poema in greco demotico sul giudizio finale: la Δευτέρα Παρουσία διὰ στίχου (15. sec.)
No full textSi pubblica l'edizione critica con commento del poema in greco demotico sul giudizio finale: la Δευτέρα Παρουσία διὰ στίχου (xv sec.
Mitomycin C in highly myopic eyes - Author reply
No full textOphthalmology. 2005 Feb;112(2):208-18; discussion 219.
Mitomycin C modulation of corneal wound healing after photorefractive keratectomy in highly myopic eyes.
Gambato C, Ghirlando A, Moretto E, Busato F, Midena E.
SourceRefractive Surgery Service and Antimetabolite Therapy Research Unit, Department of Ophthalmology, University of Padova, Padova, Italy.
Abstract
PURPOSE: To evaluate the role of topical mitomycin C in corneal wound healing (CWH) after photorefractive keratectomy (PRK) in highly myopic eyes.
DESIGN: Prospective, double-masked, randomized clinical trial.
PARTICIPANTS: Seventy-two eyes of 36 patients affected by high (>7 diopters) myopia.
METHODS: In each patient, one eye was randomly assigned to PRK with intraoperative topical 0.02% mitomycin C application, and the fellow eye was treated with a placebo. Postoperatively, mitomycin C-treated eyes received artificial tears (3 times daily, tapered in 3 months), whereas the fellow eye was treated with fluorometholone sodium 2% and artificial tears (3 times daily, tapered in 3 months).
MAIN OUTCOME MEASURES: Uncorrected visual acuity (UCVA) and best-corrected visual acuity (BCVA), contrast sensitivity, manifest refraction, and biomicroscopy. Contrast sensitivity was determined using the Pelli-Robson chart. Corneal confocal microscopy documented CWH.
RESULTS: Mean follow-up was 18 months (range, 12-36). No side effects or toxic effects were documented. At 12-month follow-up examination, UCVAs (logarithm of the minimum angle of resolution) were 0.4+/-0.48 and 0.5+/-0.53 (P = .03) in mitomycin C-treated eyes and corticosteroid-treated eyes, respectively. At 1 year, corneal haze developed in 20% of corticosteroid-treated eyes, versus 0% of mitomycin C-treated eyes. At 12, 24, and 36 months, corneal confocal microscopy showed activated keratocytes and extracellular matrix significantly more evident in untreated eyes (Ps = 0.004, 0.024, and 0.046, respectively).
CONCLUSION: Topical intraoperative application of 0.02% mitomycin C can reduce haze formation in highly myopic eyes undergoing PRK.
Comment in
Ophthalmology. 2006 Feb;113(2):357; author reply 357-8
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