Search results for " tin"

Push‐Pull Design of Bis(tridentate) Ruthenium(II) Polypyridine Chromophores as Deep Red Light Emitters in Light‐Emitting Electrochemical Cells

2013

Light-emitting electrochemical cells (LECs) with a simple device structure were prepared by using heteroleptic bis(tridentate) ruthenium(II) complexes [1](PF6)(2)-[3](PF6)(2) as emitters. The push-pull substitution shifts the emission energy to low energy, into the NIR region. The devices emit deep red light up to a maximum emission wavelength of 755 nm [CIE (International Commission on Illumination) coordinates: x = 0.731, y = 0.269 for [3](PF6)(2)], which, to the best of our knowledge, is the lowest emission energy for LECs containing bis(tridentate) ruthenium(II) complexes. A device structure of ITO/PEDOT:PSS/ruthenium(II) complex/Ag was used, and the thickness of the emitting layer was …

Pyrrhalta luteola e Tinicallis takachihoensis sugli olmi in Sicilia occidentale

1998

Canzoni in concorso nella Palermo di fine secolo

2015

L'articolo si occupa del concorso "per la canzone siciliana" bandito nel 1891 a Palermo da Tina Withaker Scalia con la collaborazione di Giorgio Miclei. Nella prima parte viene presentato un sintetico bilancio dei precedenti non siciliani del concorso nell'Italia post-unitaria, e nella seconda vengono analizzate in dettaglio le due canzoni vincitrici.

L'image des écrivaines dans l'univers de Pedro Almodovar. De Patty Diphusa (1984) à Amanda Gris (1995)

2012

Pedro Almodovar, qui a toujours été intéressé par l'écriture, a fréquemment représenté la littérature dans son œuvre, soit par des citations, soit par la création de personnages d'écrivains, qu'il montre à l'écran en train d'écrire des articles, des scénarios ou des romans. Trois personnages d'écrivaines sont particulièrement importants. Patty Diphusa est le nom d'une romancière et essayiste qui apparaît dans la revue la plus célèbre de la Movida madrilène du début des années 80, La Luna de Madrid, où Almodovar signait de ce pseudonyme des articles provocants qui exprimaient l'ivresse de la liberté des mœurs qui régnait dans l'Espagne nouvellement démocratique. Viennent ensuite deux personn…

Tectonics and seismicity of the Tindari Fault System, southern Italy: Crustal deformations at the transition between ongoing contractional and extens…

2006

The Tindari Fault System (southern Tyrrhenian Sea, Italy) is a regional zone of brittle deformation located at the transition between ongoing contractional and extensional crustal compartments and lying above the western edge of a narrow subducting slab. Onshore structural data, an offshore seismic reflection profile, and earthquake data are analyzed to constrain the present geometry of the Tindari Fault System and its tectonic evolution since Neogene, including the present seismicity. Results show that this zone of deformation consists of a broad NNW trending system of faults including sets of right-lateral, left-lateral, and extensional faults as well as early strike-slip faults reworked …

La ‘collezione Fagan’, le sculture di Tindari e la nascita del Museo dell’Università di Palermo

2015

The purchase of the “Fagan’s marbles” (1819) was a turning point in the birth of the Archaeological Museum of Palermo (Museo dell’Università) not so much because of its intrinsic value, but because the debate fostered in Sicily by the “Fagan affair” articulated the need for a more effective system for preservation of cultural heritage. A systematic review of the archival documents and 19th century literature, and of the statues and inscriptions said to be from the Fagan collection, from Fagan’s own excavations at Tyndaris (1809), and generically from Tyndaris, allows to identify the ancient marbles found in Tyndaris both by Fagan and in other circumstances (later scattered and confused), an…

Do Tengmalm's owls see vole scent marks visible in ultraviolet light?

1997

Scent markings (urine and faeces) of small mammals are visible in ultraviolet (UV) light. Diurnal kestrels, Falco tinnunculususe them as a cue to find areas of food abundance. We studied whether vole-eating, nocturnal Tengmalm's owls, Aegolius funereuscan see vole scent marks using UV-vision. In a laboratory experiment, 14 young (less than 6 months old) and 14 adult (more than 6 months old) owls were individually given a choice between four adjacent arenas: (1) an arena with vole urine and faeces in UV light; (2) an arena with vole urine and faeces in visible light; (3) a clean arena in UV light; and (4) a clean arena in visible light. Owls did not prefer any of the four arenas. Our results…

A test of male mating and hunting success in the kestrel: the advantages of smallness?

1996

We tested female choice for male wing and tarsus length and body mass in the kestrel (Falco tinnunculus), a species in which males average about 10% smaller than females. We also studied how male characters are related to their hunting success. In the laboratory, females preferred lighter males with shorter tarsi as mates, if the difference in those characters between competing males was larger than average. Lighter and shorter-winged males seemed to be better hunters than heavier and longer-winged males. Field observations in a year in which voles were scarce suggested that shorter-winged males were also better food providers in courtship feeding than longer-winged males,although in good v…

Phenolics of Reichardia and their taxonomic implications

1992

Abstract Fifteen compounds have been detected in Reichardia tingitana and R. picroides (nine flavonoids, four cinnamic derivatives and two unidentified non-phenolic compounds). The present study examines the taxonomic implications of these compounds in relation to the morphological and karyological characteristics.

Female choice in the kestrel under different availability of mating options

1992

Abstract Mate choice in relation to its fitness consequences on females was studied in kestrels, Falco tinnunculus , in western Finland. The breeding season is short with rapidly declining prospects of successful breeding, suggesting that females should make their mating decision quickly. On average, males arrived a few days before females, but late males arrived much later than early females. Pairs were usually formed within 2 days of male arrival, and only early males were available to early females. Options for female choice differed considerably in years of different kestrel density. In a good vole year, 1988, females had many males to choose from, but in poor vole years, 1989 and 1990,…