Search results for "ONTOLOGIA"
showing 10 items of 646 documents
Sistematica, tafonomia e paleobiogeografia delle associazioni ad ammoniti del Giurassico Medio e Superiore della Sicilia Occidentale con particolare …
2012
Comparative study of two needle models in terms of deflection during inferior alveolar nerve block
2009
Objectives: The purpose of this study is to determine the possible differences in deflection between two needles of same length and external gauge but with different internal gauges during truncal block of the inferior alveolar nerve. The initial working hypothesis was that greater deflection may be expected with larger internal gauge needles. Study design: Four clinicians subjected 346 patients to inferior alveolar nerve block and infiltrating anesthesia of the buccal nerve trajectory for the surgical or conventional extraction of the lower third molar. A nonautoaspirating syringe system with 2 types of needle was used: a standard 27-gauge x 35-mm needle with an internal gauge of 0.215 mm …
Nuovi dati sulla paleoecologia del sito pleistocenico di San Teodoro (Acquedolci, Messina)
2022
La Grotta di San Teodoro (ST) è uno dei siti preistorici più importanti del Mediterraneo cen-trale. Da pochi anni il sito è oggetto di una ripre-sa delle attività di analisi stratigrafica, geologica, geochimica e paleontologia, alla luce di una colla-borazione tra il Parco Archeologico di Tindari e l’Università degli Studi di Palermo.
Arcaicità della ontologia parmenidea
2009
L'atteggiamento teoretico di Parmenide ha avuto ed ha una conseguenza storica e una critica: la prima consiste nel fatto che con Parmenide la filosofia esce dalla preistoria; la seconda consiste nel fatto che il formarsi della ontologia è posto in una anteriorità in cui l'identità ta pensare ed essere è sì intuita ma non fondata.
High-frequency modification of the central Mediterranean seafloor environment over the last 74 ka
2022
Here we present a high-resolution record of benthic foraminiferal assemblages for the last 74 kyr from the Sicily Channel Ocean Drilling Program Leg 160 Site 963. Benthic foraminiferal results are compared with geochemical (benthic and planktic δ18O and δ13C) and calcareous plankton data, previously acquired on the same marine core sediments. Within the succession, three benthic foraminifera compositional zones were defined. Temporal changes in the assemblages are interpreted in the context of the modification of subtropical and temperate climate systems that affected the Mediterranean thermohaline circulation. A close connection between bottom conditions in the Sicily Channel and eastern M…
Influence of waste water in marine ecosystem: preliminary data on benthic foraminifera assemblages and metal concentration in marine sediments
2007
Preliminary data on correlations between aberrant benthic foraminifera and metal concentrations in sediments from Palermo and Termini gulfs (Sicily)
2005
Considerations on an integrated biochronological scale of Italian Quaternary Mammals
2011
Viene analizzato il lavoro di MASINI e SALA (2007) sull’approccio integrato della distribuzione dei grandi e piccoli mammiferi dell’Italia continentale del tardo Pliocene e del Pleistocene, tenendo conto della nuova definizione del Quaternario, mettendo in risalto i punti di forza e quelli deboli della scala proposta. Vengono inoltre aggiunti nuovi dati sulla biocronologia a mammiferi del Pleistocene Superiore. The paper of MASINI and SALA (2007) regarding an integrated approach on the stratigraphic distribution patterns of large and small mammals in the late Pliocene and Pleistocene of the Italian peninsula is analysed, showing the weak and strong points. New data are presented on the mamm…
The fossil rodent faunas of the localities Alcoy 2C and 2D (Alcoy Basin, Spain). Implications for dating the classical locality of Alcoy-Mina
2014
In the Gormaig area (Alcoy basin, SE Spain) a number of fossil mammal localities are known, of which only the classic site of Alcoy-Mina, known since the mid-19th century, has yielded remains of macrofauna. In the vicinity of this site are the localities of Alcoy-2C (AL2C) and Alcoy-2D (AL2D), probably representing the levels of Alcoy-Mina. The faunal assemblage allows dating the AL2C and AL2D localities as Early Pliocene (end of the Early Ruscinian or early-late Ruscinian boundary, MN14-MN15). Several taxa (Pliopetaurista and Glis) are thought to have affinities for humid and close biotopes. En el área del Gormaig (cuenca de Alcoy, SE España), se conocen toda una serie de yacimientos de ma…
Poggetti Vecchi (Tuscany, Italy): A late Middle Pleistocene case of human-elephant interaction
2019
Abstract A paleosurface with a concentration of wooden-, bone-, and stone-tools interspersed among an accumulation of fossil bones, largely belonging to the straight-tusked elephant Palaeoloxodon antiquus, was found at the bottom of a pool, fed by hot springs, that was excavated at Poggetti Vecchi, near Grosseto (Tuscany, Italy). The site is radiometrically dated to the late Middle Pleistocene, around 171,000 years BP. Notable is the association of the artifacts with the elephant bones, and in particular the presence of digging sticks made from boxwood (Buxus sp.). Although stone tools show evidence of use mainly on animal tissues, indicating some form of interaction between hominins and an…