Search results for " volumi"

showing 5 items of 5 documents

Giant Epitheliomas: our clinical experience

2012

Epiteliomi giganti trattamento chirurgico voluminosi epiteliomi lembi
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Volatiles in pantellerite magmas: A case study of the Green Tuff Plinian eruption (Island of Pantelleria, Italy)

2013

Abstract The Green Tuff (GT) Plinian eruption, the largest in magnitude at Pantelleria, erupted 3 to 7 km3 DRE of pantellerite magma and a small volume of trachyte. Fifty-nine anorthoclase-hosted melt inclusions from the two basal pumice members were analyzed by FT-IR spectroscopy in order to assess the pre-eruptive H2O content in the pantellerite melt. Microanalytical methods were used to determine major element, Cl, F and S contents. Melt inclusions and glassy groundmasses have a nearly homogeneous pantelleritic composition (peralkaline index = 1.9-2.2) and variable water contents ranging from 1.4 to as high as 4.2 wt %, i.e. much higher than the 1.4 wt % of earlier published studies. The…

LavaSettore GEO/07 - Petrologia E PetrografiaGeochemistryTrachyteMagma chamberStrombolian eruptionGeophysicsEffusive eruptionGeochemistry and PetrologyPumiceMagmaThe Green Tuff (GT) Plinian eruption the largest in magnitude at Pantelleria erupted 3 to 7 km 3 DRE of pantellerite magma and a small volume of trachyte. Fifty-nine anorthoclase-hosted melt inclusions from the two basal pumice members were analyzed by FT-IR spectroscopy in order to assess the pre-eruptive H2Ocontent in the pantellerite melt. Microanalytical methods were used to determine major element Cl F and S contents. Melt inclusions and glassy groundmasses have a nearly homogeneous pantelleritic composition (peralkaline index = 1.9-2.2) and variable water contents ranging from 1.4 to as high as 4.2 wt % i.e. much higher than the 1.4 wt % of earlier published studies. The chlorine content is constant at about 1 wt %. Combined Cl and H2O data were used to estimate a confining pressure of about 50 MPa (depth around 2-3 km) for the GT magma chamber. The chamber was characterized by a compositional zoning with a dominant pantellerite overlying a trachyte magma. Soon after the GT eruption intra-caldera volcanism was dominated by the eruption of voluminous trachyte lavaflows while pantellerite melt production resumed after about 20 ka with numerous low-volume mildly explosive (Strombolian) to effusive eruptions. Comparison with data from the literature reveals that despite the differentexplosivity the post-caldera Strombolian eruptions and the GT Plinian eruption were fed by pantelleritic magmas with similar water contents. Chlorine and CO2contents suggest that the young magma reservoirs feeding the Strombolian to effusive activity were deeper (h≥4.5 km) than the much larger (based on erupted volumes) magma chamber which fed the GT eruptionGeologyMelt inclusionsJournal of Volcanology and Geothermal Research
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Corrispondenze

2018

Il video, ideato e realizzato per la mostra "Viaggio per Immagini. Palermo arabo-normanna e le Cattedrali di Cefalù e Monreale dal Grand Tour al riconoscimento UNESCO", è una elaborazione originale di fotografie di Rosellina Garbo, con la musica di Marco Betta. Un racconto multimediale che si dipana tra i monumenti dell'itinerario UNESCO e che ne mette in evidenza le relazioni geometriche, volumetriche e simboliche.

Rappresentazione multimediale video geometrie volumi simboli UnescoSettore ICAR/17 - Disegno
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Fractalité volumique et urbanisation transsurfacique. Une nouvelle métrique urbaine

2017

International audience

[SHS.GEO] Humanities and Social Sciences/Geographyurbanisation transsurfacique[SHS.GEO]Humanities and Social Sciences/Geographyfractalité volumiqueComputingMilieux_MISCELLANEOUS[ SHS.GEO ] Humanities and Social Sciences/Geography
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Arguments pour expliquer la dispersion expérimentale sur le nombre de ruptures de fibres au sein d'un composite obtenue par Emission Acoustique

2013

National audience

approche multiéchellesfraction volumiqueprocessus aléatoire[ SPI.MAT ] Engineering Sciences [physics]/MaterialsRupture de fibre[SPI.MAT] Engineering Sciences [physics]/Materialsémission acoustiqueComputingMilieux_MISCELLANEOUS[SPI.MAT]Engineering Sciences [physics]/Materials
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