Search results for "Gold"

Exil à Hollywood : Korngold et la musique de film de l'âge d'or hollywoodien

2012

Carlo Goldoni

2021

International audience; « On ne peut nier que je sois né sous l'influence d'une étoile comique, puisque ma vie même a été une comédie ». Picaresque, cette vie de Carlo Goldoni nous fait entrer de plain-pied dans la folle et fascinante société vénitienne du XVIIIe siècle, puis à la cour de Louis XVet de Louis XVI. Rien d'étonnant pour ce Molière italien, ancêtre de la comédie néo-réaliste des Dino Risi, Vittorio de Sica et autres Pietro Germi...

L’histoire entre sources et ressources dans la Légende dorée de Jacques de Voragine

2015

La Légende dorée de Jacques de Voragine, compilation hagiographique fondée sur l’assemblage de sources hétérogènes, fonctionne également comme un instrument de domestication du temps pour le compilateur, le prédicateur et le lecteur du légendier. Elle tresse ainsi une pluralité d’écritures de l’histoire au sein d’une organisation calendaire, à haut rendement symbolique. Ce lien avec l’appréhension du temps est étudié à travers certains manuscrits où elle se trouve copiée à côté de textes historiographiques.

« “Cette Legende auree est a moy”. Marginalia et appropriations de la Légende dorée dans le ms. Vatican, BAV, Reg. Lat. 534 »

2012

International audience

Experimental and theoretical studies on electropolymerization of polar amino acids on platinum electrode

2017

International audience; The anodic oxidation of polar amino acids (L-serine, L-threonine, L-asparagine, and L-glutamine) in aqueous electrolyte on smooth platinum electrode was carried out by cyclic voltammetry coupled to electrochemical quartz crystal microbalance (EQCM). pH (zwitterion, acidic and alkaline) effects on their electrochemical behavior were examined. The maximum current values are measured for zwitterion species. In addition, the current increases with increasing of concentration and scan rate, and decreases with increasing pH. The resulting passivation was studied by spectroscopic analysis such as attenuated total reflection FT infrared spectroscopy (ATR-FTIR), X-ray photoel…

NHC-Stabilized Au10 Nanoclusters and Their Conversion to Au25 Nanoclusters

2022

Herein, we describe the synthesis of a toroidal Au10 cluster stabilized by N-heterocyclic carbene and halide ligands via reduction of the corresponding NHC−Au−X complexes (X = Cl, Br, I). The significant effect of the halide ligands on the formation, stability, and further conversions of these clusters is presented. While solutions of the chloride derivatives of Au10 show no change even upon heating, the bromide derivative readily undergoes conversion to form a biicosahedral Au25 cluster at room temperature. For the iodide derivative, the formation of a significant amount of Au25 was observed even upon the reduction of NHC−Au−I. The isolated bromide derivative of the Au25 cluster displays a…

A critical size for emergence of nonbulk electronic and geometric structures in dodecanethiolate-protected Au clusters.

2014

We report on how the transition from the bulk structure to the cluster-specific structure occurs in n-dodecanethiolate-protected gold clusters, Au(n)(SC12)m. To elucidate this transition, we isolated a series of Au(n)(SC12)m in the n range from 38 to ∼520, containing five newly identified or newly isolated clusters, Au104(SC12)45, Au(∼226)(SC12)(∼76), Au(∼253)(SC12)(∼90), Au(∼356)(SC12)(∼112), and Au(∼520)(SC12)(∼130), using reverse-phase high-performance liquid chromatography. Low-temperature optical absorption spectroscopy, powder X-ray diffractometry, and density functional theory (DFT) calculations revealed that the Au cores of Au144(SC12)60 and smaller clusters have molecular-like elec…

Monoclonal antibodies recognizing larval- and pupal-specific cuticular proteins of Tenebrio molitor (Insecta, Coleoptera)

1993

To study the sequential expression of insect epidermal cells during metamorphosis, a library of monoclonal antibodies (MABs) was prepared against the water-soluble proteins from preecdysial pupal cuticle of Tenebrio molitor. Six selected MABs recognizing only larval and pupal cuticular proteins (CPs) in immunoblot analysis were classified into three types. Type 1 recognized a 21.5 and a 22 kDa polypeptide, type 2, a 26 kDa polypeptide, and type 3, three polypeptides of 18.5, 19.5 and 21.5 kDa. They did not immunoreact with any protein of fat bodies or haemolymph from pharate pupae, suggesting that the antigens originate from the epidermis. The stage-specificity was confirmed by electron mic…

Neues zu kleinen frühlatènezeitlichen Goldringen aus Hessen

2021

International audience

Photocatalytic activity of N-doped TiO2-based materials embedded with gold NPs for applications in antibacterial photodynamic therapy (aPDT)

Antibacterial photodynamic therapy (aPDT) is a potential treatment for antibiotic-resistant bacterial infections. It is based on the photosensitization of bacterial cells with exogenous agents that, when exposed to light, produce reactive oxygen species (ROS), such as OH-, O2-, H2O2. ROS can induce complex oxidative-reductive chains of reactions, resulting in damage of cellular components in target tissues1. Photocatalysts, like inorganic semiconductor oxides, represent an interesting class of materials to design new strategies for aPTD. As exposed to light of proper wavelengths, photocatalysts induce the formation of electron-hole pairs capable of producing a cascade of reactions suitable …