2,080 research outputs found
Pompei all'opera: iconografie romane nella Jone di Errico Petrella
No full textAll'interno degli studi dedicati alla storia della tradizione classica, non tutti i possibili campi di ricerca sono stati completamente esplorati. Un argomento scarsamente messo in evidenza è lo scenario delle opere che mettono in scena il mondo greco-romano. Tra le opere di ambientazione classica composte nel corso del XIX secolo, uno dei maggiori successi, anche se oggi quasi dimenticato, fu Jone di Errico Petrella (1813-1877). Il libretto di quest'opera (eseguita per la prima volta a Milano, al Teatro alla Scala, nel 1858) era stato tratto dal celebre romanzo The Last Days of Pompeii di Edward Bulwer-Lytton (1834).Within the studies dedicated to the history of the classical tradition, not every feasible field of research has completely been explored. A topic scarcely attented to by now is the scenery of operas staging the Graeco-Roman world. Among the operas with a classical setting composed during the 19th century, one of the major successes, albeit nearly forgotten today, was Jone by Errico Petrella (1813-1877). The libretto of this opera (performed for the first time in Milan, at La Scala theater, in 1858) had been drawn from the celebrated novel The Last Days of Pompeii by Edward Bulwer-Lytton (1834). Unfortunately, the scene-sketches and the costume-designs of the many settings of Jone staged in the last decades of the 19th century are for the most part lost today. But luckily we have the costume-designs of the premiere in 1858 and all the scene-sketches of a second La Scala setting in 1861. From this material we can deduce that, in line with the practice of contemporary stage painters, the artists in charge of the visual look of the shows did not aim much at creating a historically reliable setting, because their work was basically orientated to the pursuit of a good theatre effect. The stage painters contented themselves with evoking a mannered antiquity, which could not however exclude the reproduction of real ancient buildings, even if this was seldom proper and pertaining to the performed action. Among the drawings of 1861 Jone, albeit fancy to a great extent, we can at least pick out a sketch indicating that its author, the stage painter Carlo Ferrario, took care to re-create a real Pompeian setting
Interpretazione dialogica e (s)cortesia. Una prospettiva didattica
No full textThis article provides a qualitative overview of the challenges posed by language (im)politeness in a dialogue interpreting class. The examples are extracted from a corpus of dialogue interpreting simulations in the Italian-Spanish language pair where Spanish is the foreign language for most of the students. Interpreting involves carrying out several mental activities simultaneously in a situation of communicative urgency. As a result, professionals will have to learn to allocate the mental effort where it is most needed. On the basis of the data, I will try to exemplify how, due to either an imbalance in the distribution of cognitive resources, or mental fatigue, or inadequate translation decisions, or poor language mastery, inexperienced subjects tend to concentrate on the propositional content of utterances while neglecting the sociopragmatics of the interaction. In particular, as regards linguistic (im)politeness, incorrect use of the pronouns of address or the omission of mitigation sometimes produce potentially impolite renditions or, conversely, deliberately impolite source utterances are rendered as polite, censoring the original speaker's intention. Therefore, in some cases, while the interpreted utterances are semantically equivalent to their respective original utterances, they are socio-pragmatically inequivalent. In other cases, they are both semantically and pragmatically inaccurat
Mechanisms of replication fork protection: a safeguard for genome stability.
No full textDuring S-phase, the genome is extremely vulnerable and the progression of replication forks is often threatened by exogenous and endogenous challenges. When replication fork progression is halted, the intra S-phase checkpoint is activated to promote structural stability of stalled forks, preventing the dissociation of replisome components. This ensures the rapid resumption of replication following DNA repair. Failure in protecting and/or restarting the stalled forks contributes to alterations of the genome. Several human genetic diseases coupled to an increased cancer predisposition are caused by mutations in genes involved in safeguarding genome integrity during DNA replication. Both the ATR (ataxia telangiectasia and Rad3-related protein) kinase and the Replication pausing complex (RPC) components Tipin, Tim1 and Claspin play key roles in activating the intra S-phase checkpoint and in stabilizing the stalled replication forks. Here, we discuss the specific contribution of these factors in preserving fork structure and ensuring accurate completion of DNA replication
Effect of DED coating and DED + Laser scanning on surface performance of L-PBF stainless steel parts
No full textThe advantages of the Laser Powder Bed Fusion process have led to growing interest from an industrial and academic point of view. However, the diffusion of this process has been slowed by technical challenges that have yet to be resolved, including non-optimal surface quality and low repeatability. To fix these issues and recover surface quality, several treatments are available. Our study focuses on one of them: the Directed Energy Deposition (DED) treatment, which in addition can be exploited for the repair of damaged components. In fact, the proposed study has been conducted by using AISI 316 L alloy both for producing parts throughout the L-PBF process and for coating them. Furthermore, a final Laser Scanning (LS) treatment has been carried out with the aim of maximizing the DED coating performances, in terms of surface roughness, microhardness and microstructural properties. To detect the anomalies that can emerge during the previous surface treatments, an optical monitoring system was implemented in the visible range by using a coaxial CCD camera, to monitor the geometry and morphology of the melt pool related to the DED and to the subsequent LS treatment. The results revealed many improvements in terms of surface roughness for the DED coating and even more for the LS treatment. Moreover, the latter was fundamental to improve the microhardness and the microstructural characteristics of the final coating. The data gathered and analyzed by the implemented monitoring system will allow making the treatment more stable and performing for future applications on complex geometries
Diagnostic accuracy of electrophoretic analysis of native or defribrinated plasma using serum as a reference sample
No full textBACKGROUND: Electrophoretic analysis of plasma may provide inaccurate results unless plasma is defibrinated with ethanol. OBJECTIVE: The aim of this study, conducted following the Standards for Reporting of Diagnostic Accuracy (STARD), was to determine whether cellulose acetate (CAE), agarose gel (AGE), and capillary zone (CZE) electrophoresis of native plasma (NP) and defibrinated plasma (DP) provided the same information as serum electrophoretograms. METHODS: Serum, NP, and DP electrophoretograms obtained using the 3 methods were examined visually by 3 observers to identify changes in globulin fractions and provide diagnostic interpretations. Using serum analysis as the reference method, sensitivity, specificity, and positive likelihood ratio of NP and DP electrophoretograms to identify abnormal globulin profiles were calculated. RESULTS: Specimens from 46 dogs were analyzed. Albumin and α(1) - and γ-globulin fractions were lower and β(2) -globulin fractions higher in NP than in serum and DP. Interpretations of NP electrophoretograms were the same as for serum in 54.8% (CAE), 51.2% (AGE), and 51.6% (CZE), revealed an increased β-globulin fraction in 32.3-41.5%, and resulted in misinterpretation, especially for CZE analysis, in 4.7-16.1% of the dogs; all dogs with abnormal serum electrophoretograms were identified correctly using NP. Analysis of DP was similar to serum analysis in about 2/3 of the dogs. In the others, defibrination did not resolve spurious plasma findings or induced additional changes. Up to 75 and 27% of NP and DP electrophoretograms, respectively, were abnormal in dogs with normal serum electrophoretograms. Sensitivity for NP and DP analysis was high, but specificity for NP was poor. CONCLUSIONS: Analysis of NP provides the same information as serum analysis in > 50% of cases, and, despite low specificity, could preliminarily exclude the presence of abnormalities when only plasma is available. If electrophoretograms are not normalized by defibrination, electrophoretic abnormalities are likely present, and electrophoresis should be repeated using serum
[Dysplasia epiphysealis hemimelica].
No full textThe Authors present 9 patients affected by Dysplasia Epiphysealis Hemimelica with a mean follow-up of 11 years (range 5 years-21 years). The Authors confirm the benignity of the disease and report the variability of the clinical evolution of this rare type of osteochondrodysplasia. Besides cases with spontaneous evolution characterized by no clinical evidence of the disease, there are cases that require surgical removal of the osteochondromas and, sometimes, corrective interventions because of axial deviations and/or limb discrepancy
Serum protein electrophoresis in dogs : interobserver agreement and influence of analytical methods and type of sample on diagnosis
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