1,721,154 research outputs found
Erratum: Parotid gland edema after chlorhexidine mouthrinse: Case report and literature review (The Open Dentistry Journal, 2018, 12: 1147-1151)
No full textParotid Gland Edema After Chlorhexidine Mouthrinse: Case Report and Literature Review The Open Dentistry Journal, 2018, 12: 1147-1151 The correct list of authors’ names is provided and replaced online which is mentioned as under: Federico Berton1, Giulia Pipinato1, Michele Maglione1, Domenico Baldi2, Roberto Di Lenarda1 and Claudio Stacchi1,* The published list of authors was: Federico Berton1, Pipinato Giulia1, Maglione Michele1, Baldi Domenico2, Di Lenarda Roberto1 and Stacchi Claudio1
Cavalcaselle e la stagione degli stacchi a Verona
No full textIl saggio ricostruisce sulla base di documenti archivistici ed iconografici alcuni episodi di stacchi di affreschi svoltisi nella Verona di fine Ottocento evidenziando la posizione critica di Giovan Battista Cavalcaselle nei confronti degli operatori e delle istituzioni cittadin
Numerical modeling of superconducting cables for fusion magnets
Full text linkIn a superconducting multi-stage conductor, many electromagnetic features depend on the strands geometry that affects
the cable behavior at both the local and the global levels, determining the inter-strand contact resistances distribution
and the coupling current loops shape. To model these phenomena in detail, an accurate description of the cable strands
geometry is necessary to get the strand trajectories and, possibly, the inter-strand contact areas.
Since analytical or semi-analytical approaches for the cables geometrical modeling, that were successfully adopted for cables
with circular cross-section, are not sufficiently adequate for conductors with square or
rectangular cross-section, a new geometrical model based on a simplified structural approach has been developed for the
numerical code THELMA.
The new geometrical model for rectangular cable-in-conduit conductors and multi-stage Rutherford-like cables is based on
a virtual cabling sequence, followed by a compaction procedure
to give the desired shape to the conductor cross-section. To reduce the inter-strands and the conduit-strands geometrical
interferences due to both the cabling and the compaction procedures, an iteratively elastic contact model has been implemented,
which takes into account an elastic force acting on the strands cross-section. These forces are evaluated on the basis
of the local geometrical interferences and the strand transversal contact stiffness. In this thesis, the main characteristics of
the new geometrical model are presented in detail.
The geometrical model validation is also shown and discussed, based on the AC losses analysis on DEMO TF rectangular cable
samples carried out with the THELMA code. In particular, the coupling currents loss has been computed and compared with
the measured one after the tuning of the strands contact resistivity parameters with respect to experimental
inter-strand resistance data.
Contact resistances are of a paramount importance for the numerical modeling
of the equivalent electromagnetic network of the cable used for the computation of the coupling loss. Hence,
the agreement between the experimental and the numerical AC losses results represents a key point for the geometrical model
validation.
An important aspect to be taken into account for the AC losses estimation in superconducting cables is the presence of eddy
current loss in the copper stabilizer which is needed for the conductor stability. In this thesis, a preliminary
study to model a new stabilizer proposed for one of the DEMO TF prototype conductors is discussed. In
particular, the transversal resistance of the stabilizer has been numerically analyzed and the eddy currents loss due
to a time-varying magnetic field has been computed with the THELMA code
Cesare Gnudi e la salvaguardia degli affreschi: stacchi e strappi a Bologna fra allestimenti permanenti, restauri e mostre temporanee
No full textCesare Gnudi sarà il principale protagonista della stagione degli stacchi emiliano romagnola contribuendo all'allestimento della sala degli affreschi nella Pinacoteca di Bolog
Dalle mostre “antologiche di alta civiltà” ai musei mai realizzati: stacchi e strappi di dipinti murali nelle politiche culturali del secondo Novecento
No full textGli anni Cinquanta e Sessanta segnano nella storia degli stacchi e degli strappi di dipinti murali in Italia una stagione di gloria; a partire dal secondo dopoguerra in gran parte della nazione si avviano importanti campagne di stacchi che nell’idea di garantire preventivamente la sicurezza degli affreschi, depauperano il territorio delle proprie ricchezze artistiche. Le ragioni conservative addotte a giustificazione celano in realtà anche altri scopi che hanno spesso a che vedere con mostre e musei. Con gli anni Settanta la situazione si modifica, le nuove riflessioni sulle identità territoriali, sul museo diffuso, il nuovo assetto legislativo per la tutela del patrimonio, segnano un’inversione di tendenza e gli stacchi lasciano spazio a interventi in situ volti a preservare il legame tra opera e contesto. Si solleva la questione della ricollocazione in loco degli affreschi staccati e i musei restituiscono al territorio le sue opere
Leonetto Tintori e la stagione degli stacchi: il caso degli Uomini Illustri di Andrea del Castagno a villa Carducci-Pandolfini
No full textLe varie campagne di restauro che interessarono negli anni Cinquanta e Sessanta villa Carducci Pandolfini, sito d’origine del ciclo d’affreschi degli Uomini e Donne Illustri di Andrea del Castagno, rappresentano un caso particolarissimo nella Firenze capitale della cosiddetta “stagione degli stacchi”. Il presente contributo si propone di delineare e inquadrare criticamente le operazioni svolte dal restauratore Leonetto Tintori all’interno della villa (1953-1968 c.), con riflessioni sulle tecniche di pittura murale impiegate da Andrea del Castagno.The various restoration campaigns that involved Villa Carducci Pandolfini, the site of origin of the cycle of frescoes of Famous Men and Women by Andrea del Castagno, represent a peculiar case in the Florence of the 50s and 60s, capital of the so-called "stagione degli stacchi". This contribution aims to outline and critically frame the operations carried out by the restorer Leonetto Tintori inside the villa (c. 1953-1968), with considerations on the mural painting techniques used by Andrea del Castagno
Surgical relocation of a malpositioned unserviceable implant protruding into the maxillary sinus cavity. A clinical report
No full textMalpositioned implants always result in significant mechanical and aesthetic restorative challenges. This case report describes the correction of position of an unserviceable osseointegrated implant also protruding into the maxillary sinus cavity. This surgical technique facilitated the relocation of an implant-bony segment into a more favorable aesthetic and biomechanical position in a single stage surgery
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