1,721,027 research outputs found
Tuning of Modern and Late Pleistocene beach and coastal dune deposits of Palinuro (Italy)
No full textModern beach deposits and late Pleistocene marine terraces of the Palinuro area (province of Salerno) were investigated in the field and the analysis of selected sand samples. The ancient deposits, today indiscriminately attributed to the late Pleistocene, have been divided into two distinct sedimentary cycles. The first is a beach-dune cycle that was originated in MIS 5e. The second is a coastal-dune cycle of indeterminate
age (Post MIS 5e); the aeolian dunes exposed on top of the promontory of Palinuro are part of the second cycle
Field Trip Guidebook - Four itineraries through the geological and cultural heritage of Cilento and Vallo di Diano Geopark
No full textCaratterizzazione idrogeologica della Formazione di Monte Sacro (Cilento - Campania meridionale)
No full textCaratterizzazione idrogeologica della Formazione di Monte Sacro (Cilento - Campania meridionale)
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Literal Solutions for Optimal Design of Microwave Absorbing Composites
No full textThis paper proposes a new approach for the optimal design of microwave absorbing composites backed by a PEC layer and characterized by frequency dependent permeability and permittivity. The reflection coefficient is expressed as a function of the difference between the absorber hyperbolic input impedance and the free space wave impedance, considering an impinging plane wave with either normal or oblique incidence angle. The impedance matching condition for the selected frequency and incidence angle is solved in terms of literal expression of the optimal thickness, which is compared with the one quarter wavelength thickness given by a new accurate expression. The optimal thickness is used for the design of microwave absorbers made by dielectric-magnetic and dielectric composite materials. The frequency spectra of the absorber input impedances and reflection coefficients are computed in the frequency range from 2 GHz up to 18 GHz and for an incidence angle ranging between 0° and 30°. The obtained results prove the validity of the literal expression of the composite optimal thickness which explicitly shows the crucial parameters for the absorbing performances, obscured in common numerical procedure
Accidental endoscopic finding of Anisakis simplex in human colon
No full textAnisakidosis is a zoonotic disease caused by the ingestion of nematodes belonging to the family of Anisakidae. Human infection is caused by intake of raw or undercooked sea fish and cephalopods infested by Anisakis larvae. We present a case of accidental endoscopic finding of an alive nematode adhering to distal ascending colon in a 32 years old man, submitted to colonoscopy owing to recent onsets of rectal bleeding of likely hemorrhoidal origin. The nematode, removed from colon by means of biopsy forceps, has been identified as L3 larvae of A. simplex by a light microscope. Histological examination of intestinal mucosa showed a mild fibrosis of lamina propria, characterized by focal lymphocytic inflammation and scattered infiltration of eosinophils. The patient reported the intake of marinated anchovies 3 days before endoscopic examination
Caratterizzazione idrogeologica della formazione di Monte Sacro (Cilento - Campania meridionale)
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