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- SourceAvailable from: Bellina Di Lieto[Show abstract] [Hide abstract]
ABSTRACT: This study performs a detailed reconstruction of the rupture mechanism of the 1980 Campania–Lucania (southern Italy) earthquake. This is achieved by relocation of the main event through computation of fault-plane solutions of the aftershocks, P-wave velocity inversion, and analysis of post-seismic ground deformation, which provide an overall picture of the faulting mechanism. All of these data are in favor of a complex rupture mechanism, as already identified by many studies, which consists of three separate events. The present study defines a graben-like rupture, with the first event rupturing a (>20-km-long) segment of a large, high-angle, NE-dipping, SE-NW-striking, normal fault. The two successive ruptures occurred separately, the first along the southern segment, and the second along the northern segment, of a complementary SW-dipping, normal fault. This mechanism is well evidenced by the revised location of the hypocenter of the main event, and the location of the aftershocks and their fault-plane solutions, as well as by the underlying three-dimensional P-wave velocity structure. The model proposed by Amoruso et al. [2005a] that was based on the inversion of co-seismic vertical displacement data is confirmed by the present analyses, as it satisfies all of the available experimental observations, and better constrains the location and fault-plane solutions of the aftershocks, the velocity discontinuities, and the rupture observations at the surface. This conclusion is also supported by analyses of the post-seismic data.Annals of geophysics = Annali di geofisica 05/2015; 54(6). DOI:10.4401/ag-4984
- Haematologica 03/2015; 100(3):e118-9. DOI:10.3324/haematol.2014.122168
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ABSTRACT: Highly ordered graphite oxide intercalation compounds (GOIC) and fully disordered graphite oxide exfoliated compounds (GOEC) have been obtained, for two quaternary phosphonium salts. X-ray diffraction patterns of both GOIC and GOEC maintain the 100 and 110 reflections of GO, clearly indicating the maintenance of in-plane GO order. For GOICs, few 00ℓ reflections (with ℓ up to 3) appear, indicating an increase with respect to GO of crystalline order as well as an increase of spacing between GO layers from 0.84 nm up to 1.40 nm. GOIC and GOEC have been compared as for their kinetics of release in aqueous solutions of a phosphonium ion, being a known antibacterial agent. The GOICs exhibit pH sensitive cation release, with zero order kinetics, which could be helpful for applications requiring triggered and constant supply of active ions.Chemistry of Materials 02/2015; 27(5):150216133706001. DOI:10.1021/cm504174v
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