Search results for "Icon"

Rilievo/Racconto. Lettura multimediale dei dodici mesi in un capitello a Monreale - Survey/Tale. Multimedia reading of the twelve months in a capital…

2018

Lo studio riguarda un capitello monolitico quadruplo, sorretto da quattro colonne raggruppate, che si trova nell’area sud-occidentale del chiostro del Duomo di Monreale. Sul capitello sono raffigurati i dodici mesi dell’anno, secondo un programma iconografico proprio dei portali romanici che aveva la funzione di una rappresentazione narrativa. L’iconografia viene qui rappresentata attraverso un elaborato multimediale che assolve alle stesse finalità originarie di racconto di un percorso concettuale, mediante tecnologie per la fruizione virtuale e per la valorizzazione di Beni Culturali. The paper concerns a quadruple monolithic capital, supported by four grouped columns, located in the sout…

The European Flag According to Paolo Fabbri

2021

Too often we consider symbols in our cultures to be indivisible monoliths that can only be interpreted through the connotations they take on over time. This is due, on one hand, to their compact nature, the correspondence between the planes of expression and content that make them appear solid, impossible to break down. However, it is also true that in the majority of cases we inherit ready-made symbols that seem to have been born with their current shape, with no hint as to the processes that have made them this way. As a rule, there are so many, varied meanings of the word “symbol” that, in the absence of a clear, consensual hypothesis on what a symbol is, they can be difficult to read. A…

Charles Nodier et la linguistique des origines

2014

International audience; Du point de vue de l'histoire des idées, Charles Nodier occupe une position doublement importante. Il est l'auteur du premier livre en français contenant le mot « linguistique » dans le titre et il est le premier président de cet Institut des Langues qui, le 21 décembre 1839, deviendra la première « Société de Linguistique » française. Si on s'en tenait à ce critère strictement lexicologique, on ne manquerait donc pas d'arguments pour affirmer que Nodier a joué un rôle clé dans l'apparition de la linguistique en France. Peu de linguistes accepteraient pourtant aujourd'hui de souscrire à une pareille affirmation. Pour la plupart d'entre eux, la linguistique ne se mani…

Toxicological assessment of mesoporous silica particles in the nematode Caenorhabditis elegans

2018

[EN] Here we report the toxicological evaluation of mesoporous silica particles (MSPs) in the nematode C. elegans. Specifically, we have investigated the effect of bare micro- (M0) and nano-sized (N0) MSPs, and their corresponding functionalized particles with a starch derivative (Glu-N) (M1 and N1, respectively) on C. elegans ageing parameters. The toxicity of MSPs, their impact on C. elegans lifespan, movement capacity, progeny and ability to survive upon exposure to acute oxidative stress were assessed. This study demonstrated that both size particles assayed (M0 and N0), labeled with rhodamine and monitored through fluorescence microscopy, are ingested by the nematode. Moreover, toxicit…

Azobenzene Polyesters Used as Gate-Like Scaffolds in Nanoscopic Hybrid Systems

2012

The synthesis and characterisation of new capped silica mesoporous nanoparticles for on-command delivery applications is reported. Functional capped hybrid systems consist of MCM-41 nanoparticles functionalised on the external surface with polyesters bearing azobenzene derivatives and rhodamine¿B inside the mesopores. Two solid materials, Rh-PAzo8-S and Rh-PAzo6-S, containing two closely related polymers, PAzo8 and PAzo6, in the pore outlets have been prepared. Materials Rh-PAzo8-S and Rh-PAzo6-S showed an almost zero release in water due to steric hindrance imposed by the presence of anchored bulky polyesters, whereas a large delivery of the cargo was observed in the presence of an esteras…

Il Talidomide e la Medicina periconcezionale: breve storia e grande insegnamento.

2007

3D photonic crystal intermediate reflector for micromorph thin-film tandem solar cell

2008

The concept of 3D photonic intermediate reflectors for micromorph silicon tandem solar cells has been investigated. In thin-film silicon tandem solar cells consisting of amorphous and microcrystalline silicon with two junctions of a-Si/μc-Si, efficiency enhancements can be achieved by increasing the current density in the a-Si top cell. It is one goal to provide an optimized current matching at high current densities. For an ideal photon-management between top and bottom cell, a spectrally selective intermediate reflective layer (IRL) is necessary, which is less dependent of the angle of incidence than state-of-the-art thickness dependent massive interlayers. The design, preparation and cha…

The influence of the tape-casting process parameters on the geometric characteristics of SiC tapes

1998

Abstract The production process of the tape-casting technique applied to the production of porous ceramic membranes, suitable for the separation of different chemical species, has been explored, with emphasis on the influence of the operative parameters on the macrogeometric characteristics of the manufactured ceramic porous tapes. The effects of the slurry casting rate, the doctor blade height and the mean particle diameter have been studied and the results reported. The characterization analyses indicate the degree of reliability of this technique to produce planar SiC components and the importance of the particle size in enhancing the structural homogeneity. A study on the variance analy…

Activation of glycine receptors modulates spontaneous epileptiform activity in the immature rat hippocampus

2014

While the expression of glycine receptors in the immature hippocampus has been shown, no information about the role of glycine receptors in controlling the excitability in the immature CNS is available. Therefore, we examined the effect of glycinergic agonists and antagonists in the CA3 region of an intact corticohippocampal preparation of the immature (postnatal days 4-7) rat using field potential recordings. Bath application of 100 μM taurine or 10 μM glycine enhanced the occurrence of recurrent epileptiform activity induced by 20 μM 4-aminopyridine in low Mg(2+) solution. This proconvulsive effect was prevented by 3 μM strychnine or after incubation with the loop diuretic bumetanide (10 …

Francesco Luisi, Il Caritesio ovvero il Convito delle Grazie. Studi sulla musica per il teatro e sull'iconografia musicale del XVI secolo

2009

Selezione e raccolta di saggi di Francesco Luisi in occasione dei suoi sessantacinque anni. Il volume giubilare riunisce gli interventi più originali sulla musica per il teatro del Cinquecento, secondo distinzioni di utenza e genere. L'autore analizza esempi di musica nata per il teatro o per esso adattata, di musica piazzata come intermedio tra gli atti e di musica in forma di canti inseriti nel corso dell'azione con funzione decorativa o drammatica. Si intrattiene altresì sulla qualità degli eventi sonori in relazione ai generi della tragedia, della commedia, della favola pastorale e della sacra rappresentazione. La seconda parte riguarda lo studio delle allegorie musicali e degli aspetti…