Search results for "germani"

A Search for the Hidden King: Messianism, Prophecies and Royal Epiphanies of the Kings of Aragon (circa 1250-1520)

2019

Modern historiography has studied the influence of messianic and millennialist ideas in the Crown of Aragon extensively and, more particularly, how they were linked to the Aragonese monarchy. To date, research in the field of art history has mainly considered royal iconography from a different point of view: through coronation, historical or dynastic images. This article will explore the connections, if any, between millennialist prophetic visions and royal iconography in the Crown of Aragon using both texts and the figurative arts, bearing in mind that sermons, books and images shared a common space in late medieval audiovisual culture, where royal epiphanies took place. The point of depar…

Sprachatlas von Nordostbayern, Hermann Scheuringer (Hg.). 2014. Einführung von Johann Schmuck; Sprachatlas von Nordostbayern, Robert Hinderling (Hg.)…

2015

Complessi del germanio tetracloruro con basi di Schiff:sintesi e caratterizzazione

2009

COMPLESSI DEL GERMANIO TETRACLORURO CON BASI DI SCHIFF: SINTESI E CARATTERIZZAZIONE Alberta Fontana Dipartimento di Chimica Inorganica e Analitica S. Cannizzaro. Universita' di Palermo Per reazione della base di Schiff PYAP con il GeCl4 in metanolo nel rapporto Ge/PYAP di 1:2 si ottengono due composti :il composto “a” (GeC28H24N4O6 )(colore arancio) e”b” ( GeC28H28N4O7Cl2 ) ( colore rosso). Il composto a è stato ottenuto in presenza di MeONa . Questi composti sono stati caratterizzati da analisi centesimale, misure I.R., H1NMR , conducibilità e T.G. Da un’analisi effettuata sugli spettri IR dei complessi e del legante si nota la scomparsa a 1234 cm1 della banda attribuibile all’OH fenolico1…

First Measurement of the Form Factors in Ds+→K0e+νe and Ds+→K*0e+νe Decays

2019

We report on new measurements of Cabibbo-suppressed semileptonic D_{s}^{+} decays using 3.19  fb^{-1} of e^{+}e^{-} annihilation data sample collected at a center-of-mass energy of 4.178 GeV with the BESIII detector at the BEPCII collider. Our results include branching fractions B(D_{s}^{+}→K^{0}e^{+}ν_{e})=[3.25±0.38(stat)±0.16(syst)]×10^{-3} and B(D_{s}^{+}→K^{*0}e^{+}ν_{e})=[2.37±0.26(stat)±0.20(syst)]×10^{-3}, which are much improved relative to previous measurements, and the first measurements of the hadronic form-factor parameters for these decays. For D_{s}^{+}→K^{0}e^{+}ν_{e}, we obtain f_{+}(0)=0.720±0.084(stat)±0.013(syst), and for D_{s}^{+}→K^{*0}e^{+}ν_{e}, we find form-factor r…

Luminescence of different modifications of crystalline silicon dioxide: Stishovite and coesite

2003

Abstract Luminescence of very small samples of single crystals of coesite and stishovite has been studied. The spectra were detected under ionizing radiation (X-ray and electron beam) and the decay kinetics of cathodoluminescence in the range of time from 10 ns to 3 ms was measured. The coesite luminescence possesses a broad band at 3 eV with exponential decay about 680 μs at 80 K. The nature of this luminescence was explained as a self-trapped exciton creation in tetrahedron framework. The stishovite luminescence possesses two bands—blue (2.8 eV) and UV (4.7 eV). The UV band intensity grows more than 20 times with irradiation dose from initial level. This shows that the corresponding lumin…

EXCITONS, LOCALIZED STATES IN SILICON DIOXIDE AND RELATED CRYSTALS AND GLASSES

2000

The excitons, localized states in crystalline and glassy silicon dioxide, germanium dioxide were studied by photoluminescent and photoelectric experimental methods. Results were compared with analogous investigations of related crystals, such as aluminum and gallium orthophosphates, and of related glasses, such as silica, sodium silicates, germanates, lead and phosphates glasses. Special attention was made to the influence of oxygen deficiency on localized states of glasses, in general, and to the nature of the 7.6 eV band in reduced silica, in particular.

Luminescence of GeO2 glass, rutile-like and α-quartz-like crystals

2006

Abstract The luminescence of GeO 2 rutile-like crystals was studied. Crystals were grown from a melt of germanium dioxide and sodium bicarbonate mixture. Luminescence of the crystal was compared with that of sodium germanate glasses produced in reduced and oxidized conditions. A luminescence band at 2.3 eV was observed under N 2 laser (337 nm). At higher excitation photon energies and X-ray excitation an additional band at 3 eV appears in luminescence. The band at 2.3 eV possesses intra-center decay time constant about 100 μs at 290 K and about 200 μs at low temperature. Analogous luminescence was obtained in reduced sodium germanate glasses. No luminescence was observed in oxidized glasses…

Simulations of Glassforming Network Fluids: Classical Molecular Dynamics versus Car-Parrinello Molecular Dynamics

2010

Abstract Static and dynamic Properties of molten germanium dioxide are studied by two simulation methods, classical Molecular Dynamics (MD) using the Oeffner-Elliott (OE) potential, and “ab initio” Car-Parrinello Molecular Dynamics (CPMD). While CPMD provides a (presumably) more accurate description of the local structure and the forces, it severely suffers from finite size effects when the structure beyond the first neighbor shells is considered. For glassforming fluids, the demanding equilibrium needs are a further reason, why simply MD is still preferable, when a “good” effective potential is available.

Defect Luminescence Study in Tetragonal GeO2 Crystals

2000

The perovskite-or rutile-like GeO2 crystals were grown by the “top-seed” method from a fused germanium dioxide solution with sodium bicarbonate. The luminescence was studied under cathode-, x-ray, and photo-excitation. There are two luminescence bands at 550 nm and 400 nm with slow (100–200 µs) and fast (<20 ns) decay, respectively. The luminescence can be excited either by intra-center and electron-hole recombination processes. An analogous luminescence, however with strong non-exponential decay, is observed in glassy materials obtained from the frozen solution. Sodium-germanate glasses melted under oxygen deficient condition also possess similar luminescence, therefore the luminescence is…

Making Sense of Apparent Chaos: Recontextualising the So-Called > (B 24.5)

2011

Il saggio analizza una serie di glosse relative ai nomi dei venti e ai nomi dei punti cardinali che compaiono nei manoscritti anglosassoni, studiandone relazioni e trasmissione.