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14 results on '"Tropeano M"'

12. Geant4—a simulation toolkit

Author

Agostinelli, S., primary, Allison, J., additional, Amako, K., additional, Apostolakis, J., additional, Araujo, H., additional, Arce, P., additional, Asai, M., additional, Axen, D., additional, Banerjee, S., additional, Barrand, G., additional, Behner, F., additional, Bellagamba, L., additional, Boudreau, J., additional, Broglia, L., additional, Brunengo, A., additional, Burkhardt, H., additional, Chauvie, S., additional, Chuma, J., additional, Chytracek, R., additional, Cooperman, G., additional, Cosmo, G., additional, Degtyarenko, P., additional, Dell'Acqua, A., additional, Depaola, G., additional, Dietrich, D., additional, Enami, R., additional, Feliciello, A., additional, Ferguson, C., additional, Fesefeldt, H., additional, Folger, G., additional, Foppiano, F., additional, Forti, A., additional, Garelli, S., additional, Giani, S., additional, Giannitrapani, R., additional, Gibin, D., additional, Gómez Cadenas, J.J., additional, González, I., additional, Gracia Abril, G., additional, Greeniaus, G., additional, Greiner, W., additional, Grichine, V., additional, Grossheim, A., additional, Guatelli, S., additional, Gumplinger, P., additional, Hamatsu, R., additional, Hashimoto, K., additional, Hasui, H., additional, Heikkinen, A., additional, Howard, A., additional, Ivanchenko, V., additional, Johnson, A., additional, Jones, F.W., additional, Kallenbach, J., additional, Kanaya, N., additional, Kawabata, M., additional, Kawabata, Y., additional, Kawaguti, M., additional, Kelner, S., additional, Kent, P., additional, Kimura, A., additional, Kodama, T., additional, Kokoulin, R., additional, Kossov, M., additional, Kurashige, H., additional, Lamanna, E., additional, Lampén, T., additional, Lara, V., additional, Lefebure, V., additional, Lei, F., additional, Liendl, M., additional, Lockman, W., additional, Longo, F., additional, Magni, S., additional, Maire, M., additional, Medernach, E., additional, Minamimoto, K., additional, Mora de Freitas, P., additional, Morita, Y., additional, Murakami, K., additional, Nagamatu, M., additional, Nartallo, R., additional, Nieminen, P., additional, Nishimura, T., additional, Ohtsubo, K., additional, Okamura, M., additional, O'Neale, S., additional, Oohata, Y., additional, Paech, K., additional, Perl, J., additional, Pfeiffer, A., additional, Pia, M.G., additional, Ranjard, F., additional, Rybin, A., additional, Sadilov, S., additional, Di Salvo, E., additional, Santin, G., additional, Sasaki, T., additional, Savvas, N., additional, Sawada, Y., additional, Scherer, S., additional, Sei, S., additional, Sirotenko, V., additional, Smith, D., additional, Starkov, N., additional, Stoecker, H., additional, Sulkimo, J., additional, Takahata, M., additional, Tanaka, S., additional, Tcherniaev, E., additional, Safai Tehrani, E., additional, Tropeano, M., additional, Truscott, P., additional, Uno, H., additional, Urban, L., additional, Urban, P., additional, Verderi, M., additional, Walkden, A., additional, Wander, W., additional, Weber, H., additional, Wellisch, J.P., additional, Wenaus, T., additional, Williams, D.C., additional, Wright, D., additional, Yamada, T., additional, Yoshida, H., additional, and Zschiesche, D., additional

Published
2003
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13. Development of rudist lithosomes in the Coniacian–Lower Campanian carbonate shelves of central-southern Italy: high-energy vs low-energy settings

Author

M. Sirna, G. Sirna, Gabriele Carannante, Lucia Simone, Daniela Ruberti, A. Laviano, Marcello Tropeano, AA.VV., Simone, L, Carannante, G, Ruberti, Daniela, Sirna, Maurizio, Sirna, G, Laviano, A. TROPEANO M., Laviano, A., Tropeano, M., Simone, L., Carannante, Gabriele, Ruberti, D., Sirna, M., Sirna, G., Simone, Lucia, and Carannante, G.

Subjects
biology, Bioerosion, Foramol-carbonate open shelve, Paleontology, Oceanography, biology.organism_classification, Rudist lithosome, Cretaceous, Sedimentary structures, Sedimentary depositional environment, Italy, Grainstone, Rudists, Taphonomy, Facies, Subaerial, Late cretaceou, Depositional cycle, Ecology, Evolution, Behavior and Systematics, Geology, Earth-Surface Processes
Abstract

The Late Cretaceous shallow-water depositional areas of southern Tethys were complexes of unprotected shelves occupied by foramol assemblages that produced loose, diagenetically stable bioclastic debris not involved in significant in situ cementation processes. Both storm- and wind-induced currents and waves exercised a strong control on the distribution of the shifting biogenic sediments which covered the open sea-floor, constituting large coalescing sheets of winnowed fine to coarse skeletal sands. Rudists spread over all shelf sectors, from more open and external areas to more internal ones, occupying different substrata and furnishing the bulk of the skeletal component by means of bioerosion processes. They colonised mobile sediments giving rise to complex bodies with peculiar characteristics related to environmental parameters of the different sectors of the shelf. On the basis of detailed sedimentological, taphonomic and palaeontological data, we recognised two main rudist-rich depositional settings ('end members') in the southern Italy Senonian rudist-bearing successions. In successions pertaining to hypothesised marginal shelf sectors, characterised by high-energy regime deposits, rudist lithosomes are metric in thickness and lateral extent and lens-like in morphology.. rich in bioerosion-derived skeletal sand and silt. Rudists are highly diversified. Large elongated cylindro-conical hippuritids (mostly pertaining to the genera Hippurites and Vaccinites), thick-shelled radiolitids and plagioptychids largely dominate. Rudists clustered in life position are subordinate; they often form small bouquets. More commonly these organisms appear fallen but only barely reworked. The rudist-rich bodies laterally pass into clean bioclastic grainstone in which sedimentary structures, related to current and/or storm erosional action, are common. No evidence of significant original relief of the rudist bodies in respect of the neighbouring sediment can be recognised. The submarine erosion and/or the high-energy processes operating presumably inhibited the aggradation of the tidal sediments above the marginal ones. As a consequence the vertical facies organisation shows widespread subtidal cycles, as commonly recognised in open shelves with ramp-like morphologies. In successions pertaining to more internal and/or low-energy sectors, rudist-rich beds rhythmically alternate with finer-grained foraminiferal limestones. Small elevator radiolitids with oligospecific diversity are dominant, mostly concentrated in clumps. Rudists in growth position are abundant, although a large quantity of shells appear toppled with little reworking. They may form laterally continuous biostromal shell beds. Sedimentary structures such as cross-lamination and gradation are only occasionally present. The resulting facies are commonly arranged in peritidal/shallow subtidal cycles in which evidence of subaerial (up to pedogenic modifications on a large and small scale) and, less frequently, submarine exposure is common. Intermediate successions have been recognised, characterised by deposits of silty-sand plains, which present intercalations of graded, bioclastic, storm-related beds. Sedimentological characteristics seem to document more open conditions in which submarine erosion was intermittently prevalent. In these successions rudist species that are commonly found both in high-energy and low-energy assemblages coexist. (C) 2003 Elsevier B.V. All rights reserved.

Published
2003
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14. Thickness effect on the structure and superconductivity of Nd1.2Ba1.8Cu3O7+x epitaxial films

Author

G. M. De Luca, Matteo Tropeano, Marco Salluzzo, Ruggero Vaglio, Marina Putti, U. Scotti di Uccio, Daniele Marré, Salluzzo, M., De Luca, G. M., Marre’, D., Putti, M., Tropeano, M., SCOTTI DI UCCIO, Umberto, Vaglio, Ruggero, de Luca, G. M., and Marre, D.

Subjects
Superconductivity, STRAIN, Materials science, Condensed matter physics, business.industry, Thin films, Energy Engineering and Power Technology, Bragg's law, Sputter deposition, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, Optics, Sputtering, High critical temperature superconductors, Phase (matter), Strain effect, CRITICAL-TEMPERATURE, Orthorhombic crystal system, Electrical and Electronic Engineering, Thin film, business, Crystal twinning
Abstract

We have studied the effect of thickness on the structure and superconductivity of Nd1.2Ba1.8Cu3O7+x (NdBCO) epitaxial films deposited on SrTiO3 (100) substrates. High quality NdBCO films were deposited by high oxygen pressure sputtering. The samples have been carefully characterized by transport measurements and X-ray diffraction using conventional and synchrotron radiation sources. Two structural transformations are observed. The first one is a crossover from the orthorhombic and twinned structure, typical of thick samples, to a pseudotetragonal phase at thickness lower than 60 unit cells. The pseudotetragonal phase exhibits peculiar X-ray diffuse scattering around the Bragg reflections, associated to nanostructured twinned domains. The second one appears at thickness lower than 20 unit cells and is assigned to a pseudotetragonal-tetragonal transition. The transport properties are not modified at the first crossover, while a substantial decrease of T-c and of the number of holes is observed at the pseudotetragonal-tetragonal transformation. Our results suggest that the structural rearrangement and the transport properties are explained by the ordering of Cu(I)O chains. (c) 2007 Elsevier B.V. All rights reserved.

Published
2007
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