Search results for "LENI"
showing 10 items of 756 documents
La Cova de l’Hort de Cortés-Volcán del Faro (Cullera, Ribera Baixa, País Valenciano). Datos para la discusión de las ocupaciones presolutrenses
2020
Los resultados de las excavaciones realizadas entre 1968 y 1984 en la Cova de Hort de Cortés- Volcán del Faro quedaron limitados a identificar materiales solutrenses, magdalenienses y neolíticos-calcolíticos. Una lectura crítica de la Memoria de excavaciones, publicada en 2003, permitió plantear la posibilidad de la presencia de ocupaciones anteriores, posiblemente gravetienses. En 2018 se iniciaron nuevos trabajos en el yacimiento, dentro de un proyecto que pretende recuperar información a partir de los cortes de las antiguas excavaciones. Los datos obtenidos en el área más externa (corte frontal posterior, cuadrícula O4) han permitido retomar la discusión sobre la existencia de los nivele…
La Casa a peristilio 1 di Monte Iato: considerazioni per una nuova ipotesi ricostruttiva
2017
La Casa a Peristilio 1 di Monte Iato è una delle più lussuose e meglio pubblicate abitazioni ellenistiche dell’intera Sicilia. Il problema più dibattuto che la concerne riguarda la sua cronologia. Diversi studiosi, concentrando la loro attenzione su differenti aspetti (membrature architettoniche, cronologia dei rinvenimenti ceramici o considerazioni di ordine storico), hanno discusso la datazione della casa agli anni attorno al 300 a.C., suggerendo una cronologia più tarda. Dal momento che le opposte teorie sono basate sugli stessi elementi, piuttosto che aggiungere altre considerazioni per “risolvere” questo problema, cercherò di prendere in considerazione l’articolazione dell’abitazione s…
Horse exploitation at the Late Upper Palaeolithic site of Oelknitz (Thuringia, Germany) with special reference to canine modifications
2012
Abstract The faunal assemblage from Structure 5 of the Magdalenian settlement Oelknitz (Thuringia, Germany) was analyzed. The fauna is dominated by horse. All stages of butchery from skinning to marrow extraction were performed within the horse assemblage. In addition to this, various stages of organic artifact production could be documented. Two fragmentary equid canine teeth were of particular interest. They are the only documented canines from Structure 5, which otherwise contained a large amount of teeth. Both canines show traces of human modification. They were cut out of the jaw while still in the alveole. On both canines, lateral incisions were performed at the cervix dentis and the …
Sobre la vegetación del Orden Asplenietalia petrarchae en las montañas valencianas
1985
Se han estudiado las comunidades vegetales casmofíticas basífilas, presentes sobre los roquedos cálidos y secos, pertenecientes al orden Asplenietalia petrarchae Br.-Bl. & Mcier 1934, en el territorio de la Comunidad Valenciana y alrededores, detectándose en el mismo los siguientes sintáxones: Alianza Asplenion petrarchae Br.-Bl. & Meier 1934, con la asociación Melieo-Saturejetum fruticosae O. Bolós & Vives 1957. Alianza Teucrion buxifolii Rivas Goday 1955, con las asociaciones: Hippocrepido-Scabiosetum saxatilis (Rivas Goday 1953) O. Bolós 1957, Jasonio-Teucrietum thymifolii G. Mateo 1983, Rhamno borgiae-Teucrietum buxifolii nova y Lapiedro martinezii-Chelanthetum velleae nova. Chasmophyti…
A theoretical investigation on the Cd doping of Cu-depleted CuInSe<inf>2</inf> materials
2011
Because of their outstanding characteristics and affordable price, polycrystalline thin film solar cells based on CuIn 1−x Ga x Se 2 (CIGS) absorber layer have emerged to be one of the most promising materials for photovoltaic applications [1–2]. To further enhance the efficiency of these solar cells much effort is spent on the in-depth investigation of the production methods. However, the effect of structural defects and dopants upon the macroscopic properties and morphology of epitaxially grown CIGS films is not yet fully understood [3]. More importantly, it is well established that the best cells can be prepared by growing the CIGS absorber layer under Cu-poor conditions [4]. Thus, it is…
Modi di abitare, tipi e varianti: alcune riflessioni sulla cultura abitativa ellenistico-romana in Sicilia
2020
After a brief survey on the previous studies on the Sicilian domestic architecture of the hellenistic and Roman periods, this paper questions the idea of a continuous development of the Greek house's central space, from the simple court to the peristyle, as well as the opposition between “centripetal”and “axial” (i.e. the Greek peristyle house and the Roman atrium house). This rigid distinction doesn't take in account the existence of an hybrid form of the court that doesn't fit well in these comfortable cathegories: the “tetrastylon”. Sicilian houses are reconsidered in order to establish if this and other single houses' features can be labelled as “Punic”, “Greek” or “Roman” or if this is…
Efficacy of the antioxidant ebselen in experimental uveitis.
1999
Inflammation results in the production of free radicals. In a model of experimental uveitis upon subcutaneous injection of endotoxin to Lewis rats, i.e., endotoxin-induced experimental uveitis (EIU), we have evaluated the status of the antioxidant capacity of ocular tissues. EIU results in a decrease of glutathione (GSH) content and glutathione peroxidase (GPx) activity in whole eye homogenates 24-h after endotoxin administration. Furthermore, an increase in malondialdehyde (MDA) content was observed in these same samples, thus confirming the involvement of oxidative stress in the pathophysiology of the process. In view of the ability of the antioxidant ebselen as GPx enzyme mimic, we teste…
Some aspects of cardiac antioxidant defence: Ebselen (PZ 51) treatment increases glutathione peroxidase activity in the rat heart
1990
Ebselcn (PZ 5 1 : 2-phenyl1.2-benzisoelenazol-3-( 2H)-one 1 is ii synthetic organoselenium compound with anti-inflammatory activity ( I . 21, which exhibits glutathione peroxidase (GSH-Px)-like activity, catalysing the reduction o f hydrogen peroxide as well as other organic peroxides [3-5]. Its antiinflammatory effect may be mediated by either the GSH-Px activity, the inhibition of leukotriene B4 formation [6], the antioxidant capacity, or a combination of all of them. Many attempts have been made to increase the antioxidant capacity of the myocardium, since free radical generation has been demonstrated in ischaemia-reperfusion damage [7, 81; superoxide dismutase (SOD) and catalase have be…
Role of oxygen and nitrogen species in experimental uveitis: anti-inflammatory activity of the synthetic antioxidant ebselen.
2002
This study was aimed at examining the role of oxygen and nitrogen reactive species in a model of experimental uveitis upon intravitreal injection of bacterial endotoxin to albino New Zealand rabbits. The inflammatory response was evaluated in terms of: (i) the integrity of the blood aqueous barrier (protein and cell content in samples of aqueous humor), (ii) histopathological changes of the eyes, (iii) clinical evaluation (with a score index based on clinical symptoms), and (iv) the concentration of malondialdehyde (MDA), in aqueous humor, as a marker of oxidative stress. Betamethasone was used as reference treatment, superoxide dismutase as quencher of superoxide anion, L-N(G)-nitro-L-argi…
Microwave-Assisted Synthesis of New Selenazole Derivatives with Antiproliferative Activity
2013
New aryl-hydrazinyl-1,3-selenazole and aroyl-hydrazonyl-1,3-selenazoles were synthesized via Hantzsch type condensation reactions of selenosemicarbazides with α-halogenocarbonyl derivatives, under classical versus microwave heating conditions. Excellent yields and shorter reaction times were obtained under irradiation conditions. The structures of the synthesized compounds were assigned based on spectroscopic data (FT-IR, 1 H-NMR), MS and elemental analysis. Selenazole derivatives were screened for their anti-proliferative effects against two leukemia cell lines (CCRF-CEM and HL60) and three carcinoma cell lines (MDA-MB231, HCT116 and U87MG).