2,638 research outputs found
Origene: Omelie sui Salmi/1. A cura di L. Perrone. Opere di Origene 9. Rom: Edizioni Città Nuova 2020. 608 S.
No full textRecensione dell'edizione italiana di Origene, Omelie sui Salmi, a cura di L. Perrone, parte delle Opere di Origen
An integrated design methodology for components produced by laser powder bed fusion (L-PBF) process
No full textLaser powder bed fusion (L-PBF) is an additive manufacturing (AM) process that allows to build full dense metal complex part. However, despite the obvious benefits of L-PBF process, it is affected by specific technological drawbacks and it suffers from issues regarding design support tools. In order to fully exploit the advantages of L-PBF, it is necessary to know the technological constraints, such as material availability and the need to minimise the support structures. In this paper, an integrated design procedure that involves topology optimisation, design for laser powder bed fusion rules and finishing requirements is presented in order to define practical guidelines for successful AM of metal parts. The procedure is tested using a case study to prove the effectiveness of the proposed approac
I Salmi e l'autobiografismo penitenziale di Dante
No full textIl saggio si concentra sulle citazioni dirette dai Salmi presenti nella Commedia di
Dante, con particolare attenzione a quelle riferite a Dante personaggio. L’obbiettivo è quello
di oπrire un’analisi sistematica dell’importanza dei riferimenti a questo libro biblico per l’autorappresentazione in senso profetico dell’autore del poema. A tal fine, la presenza di queste
citazioni è considerata sia in riferimento alla tradizione esegetica duecentesca (con particolare
attenzione ai commenti di area domenicana) sia alla luce della presenza/assenza di allusioni ai
Salmi nelle altre opere dantesche in volgare (Vita nova e Convivio).The Psalms and Dante’s poenitential autobiography · The essay focuses on the direct quotes from the Psalms in Dante’s Commedia, paying specific attention to those referred to Dante-the-character. The aim is to oπer a systematic discussion of the importance of references to this Biblical book in helping shape the prophetic identity of the author of the poem. To do so, the presence of these quotes is analysed both with reference to the 13th c. exegetical tradition (with an emphasis on Dominican commentaries) and in light of the presence/ absence of allusions to the Psalms in other Vernacular works by Dante (Vita nova and Convivio)
Deep drilling of aluminium die-cast parts: surface roughness, dimensional tolerance and tool-chip interaction
No full textMany automotive applications require deep drilling on pressure die-cast parts in Aluminium alloys. Aim of the research was to understand if common cutting practices, usually determined on raw materials, can be successful on semi-manufactured parts as well, having an inhomogeneous microstructure. A specific investigation was carried out on deep drilling of a EN_AB-46000 cylinder block, varying technological parameters (cutting speed, feed, tool, lubrication). Dimensional tolerance and surface roughness were measured and statistically analyzed. The quantitative analysis of the process macroscopic performances was combined with an investigation of microstructural aspects of the material, their effects on chip formation and tool-chip interaction
Modellazione e simulazione agli elementi finiti dei processi per asportazione di truciolo - Parte 2
No full textI Salmi di David de Pellegrino degli Erri (Venise, 1573)
No full textInternational audienceThis paper studies the historical context in which I Salmi di David by Pellegrino degli Erri (Venice, 1573) were written and published. Aside from the fact that it is mentioned in catalogues and studies dedicated to Italian biblical edition, this work has drawn very little critical attention, partly because of its wrong attribution to the Benedictine abbot of the same name. This paper demonstrates that it was actually written by a man of letters who had been a member of the heterodox Modenese Academy, before being encouraged in his literary task by Bishop Egidio Foscarari and Count Fulvio Rangoni. The work offers an Italian and Latin translation of the Psalms, based on the Hebraic source and accompanied by a commentary. Its contents reflect a religious position which is both opened to Protestant ideas and concerned with preserving the peace and unity of the Church. These traits are emphasised in the apparatus inserted by the editor, Giordano Ziletti, who is careful to present the work as an aid to liturgical and devotional practices approved by the Church. Nonetheless, it was banned in 1593, not without having circulated, first as a manuscript in Italy and even in Spain and then as a Venetian edition of which a significant number of copies has survived. I Salmi di David by Pellegrino degli Erri are of great interest to religious, editorial, and literary historiography: they are indeed relevant for the study of Modenese and Italian religious history, the Italian editorial production of biblical texts at a time when it was affected by ecclesiastical censorship, and the linguistic and literary issues related to biblical translation and religious writing.Cet article étudie le contexte historique dans lequel Pellegrino degli Erri composa sa traduction commentée des Psaumes publiée à Venise en 1573. En dehors de mentions succinctes dans des catalogues et des études portant sur l’histoire de l’édition en Italie, l’ouvrage n’a pas attiré l’attention des critiques, en partie du fait de son attribution erronée à l’abbé bénédictin du même nom. L’article identifie l’auteur, un homme de lettres laïc, qui fut membre de l’Académie modénaise avant de se voir encouragé dans son entreprise littéraire par l’évêque Egidio Foscarari et le comte Fulvio Rangoni. Il compose ainsi une traduction italienne et une nouvelle traduction latine des Psaumes à partir de la source hébraïque, ainsi qu’un commentaire en italien. Son travail reflète une position à la fois ouverte aux idées protestantes et soucieuse de préserver l’unité de l’Église, des traits que vient accentuer l’apparat textuel ajouté par l’éditeur Giordano Ziletti. Le livre fut mis à l’Index en 1593, après avoir circulé dès avant sa publication sous forme manuscrite jusqu’en Espagne, puis dans son édition vénitienne, dont subsiste un nombre non négligeable d’exemplaires. I Salmi di David de Pellegrino degli Erri se révèle d’un grand intérêt aussi bien au regard de l’histoire religieuse de l’Italie entre Réforme et Contre-Réforme que de celle de l’édition religieuse et de la censure ecclésiastique et de celle de la langue et de la littérature italiennes confrontées aux problématiques majeures que posèrent la traduction biblique et l’écriture religieuse
Residual stress analysis of thin AlSi10Mg parts produced by Laser Powder Bed Fusion
No full textAmong the various Additive Manufacturing (AM) technologies available for metal part production, powder bed processes are the most promising for industrial mass production. However, one obstacle to the widespread adoption of AM technologies is the effect of the residual stress state on the integrity and lifetime of parts. The residual stress state is influenced to a great extent by the geometry and orientation of the part, and such conditions as the distance of the part regions from the building platform or geometrical constraints may change the stress values and distribution. This work describes an experimental activity that has made it possible to draw the trend of the residual stress beneath the surfaces of thin samples produced in AISi10Mg alloy through a Laser Powder Bed Fusion (L-PBF) process, in order to evaluate how stresses are altered by different geometrical constraints
Iron(II) catalyzed dehydrative etherification of alcohols: a convenient route to ferrocenylmethanol-ethers
No full textThe iron complex [Fp][OTf] (Fp+L[Fe(CO)2(Cp)]+, OTf2LSO3CF32) was found to act as efficient catalyst for the dehydrative etherification of ferrocenylmethanol [HOCH2–Fc] with a variety of alcohols (ROH), providing a valuable route for the formation of ferrocenylmethanol-ethers [ROCH2–Fc]. The complex [Fp][OTf] also catalyzes etherification of propargyl alcohols with other alcohols. The advantages of the method are associated with the use of a non toxic and easily available transition metal as catalyst, and the dehydrative synthetic approach, which produces water as the only by-product
Olefin and allene insertion into the metal thiocarbyne bond in diiron complexes
No full textIn Libro degli Abstrac
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