1,721,086 research outputs found
Valoración del riesgo de contaminación por Nitratos de las aguas subterraneas mediante el uso de los modelos DRASTIC y SINTACS
No full textDal Memorandum sul lifelong learning al Consiglio Europeo di Barcellona: Verso la creazione di uno spazio europeo dell'apprendimento permanente
No full textN/
Valutazione del rischio di inquinamento da Nitrati della Pianura Apuana attraverso il modello DRASTIC
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Geomorphology and kinematics of the Conturrana rockslide-debris flow (NW Sicily)
No full textThe Conturrana rockslide-debris flow involved a mass of almost 22×106 m3 of well indurated breccia with a plastic basal layer. The original rock mass slid initially along a listric slip surface - which required the rupture of the mass itself by internal shearing and caused the formation of a horst-and-graben morphology - and attained a high speed. Then part of the mass fell from a morphological step, and moved about 800m forward. In this landslide, the morphological and morphometrical examination - which is also based on a reconstruction of the pre-landslide topography - indicates that mobility was rather low when related to volume and to the control exerted by focal morphology. The event might have been induced by an earthquake in the 4th century
Seven landslide dams of old seismic origin in southeastern Sicily (Italy)
No full textThis paper focuses on origin, morphology and evolution of seven landslide dams in southeastern Sicily. These landforms are part of a set of 146 landslides recently recognised in this area, which was hitherto considered to have little or no slope instability. Southeastern Sicily consists of a plateau (the Hyblaean Mountains) incised by canyons and surrounded by lower lands. It is underlain mostly by subhorizontal, moderately to well-lithified carbonate rocks. Relief is low. Several lines of evidence justify the assumption of a seismic trigger for the landslides in this area: (1) the geo-climatic environment is not favourable to landsliding, (2) low-angle basal shear surfaces are very frequent, (3) landslide distribution is consistent with the known magnitude-distance relationships for earthquake-induced landslides, (4) historical documents testify to earthquake-triggered slope instability and (5) a specific landslide can be exactly dated. The phenomena illustrated here include six rock slides (one with a debris-flow component) and one rock fall. Slip surfaces are mostly non-circular. Landslide volume ranges from about 50 × 103 to 34 × 106 m3. With reference to the Costa and Schuster [Geol. Soc. Am. Bull. 100 (1988) 1054] classification of landslide dams, five cases belong to type II (spanning the entire valley), and two to type IV (failures from both valley sides, with frontal or side contact between failed masses). With reference to Crozier and Pillans [Catena 18 (1991) 471] classification of landslide lakes, all cases show a main valley lake while tributary valley, back and supra lakes are sporadically present. One damming is attributable to the 1693 earthquake with certainty; another damming, to the same earthquake with high probability. Three dams were reincised, one breached or reincised, one is slightly reincised and two more or less intact; correspondingly, five silting up deposits were reincised, one is being reincised at present and two are still under formation. © 2002 Elsevier Science B.V. All rights reserved
"La porcellana di Capodimonte, oggi”, Direzione Regionale per i Beni Culturali e Paesaggistici della Campania sotto la direzione scientifica di Nicoletti P., Capodimonte Napoli
No full textLA Direzione Regionale
per i Beni Culturali e Paesaggistici della Campania sotto la direzione scientifica di Nicoletti P. incarica la candidata a progettare un oggetto di design per la Porcellana di Capodimont
Osservazioni sullo sviluppo dell'articolazione scapolo-omerale nell'Uomo, con particolare riferimento ai suoi rapporti con il tendine del capo lungo del muscolo bicipite del braccio
No full textGoing Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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