177,285 research outputs found
Some structural and dynamical properties of multilamellar vesicles incorporated with propranolol
No full textNEUTRON-DIFFRACTION STUDY OF THE CRYSTALLINE TEXTURE IN A MARTENSITIC STEEL FOR FUSION-REACTOR TECHNOLOGY
No full textThis contribution presents the results of a neutron-diffraction study on the evolution of texture in modified martensitic steel DIN 1.4914 (MANET) submitted to various quenching and tempering treatments in conditions technologically relevant to operation in future fusion reactors. The corresponding orientation-distribution functions are presented and discussed, with reference to other microstructural features of the investigated material
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Structural properties of fractured and faulted Cretaceous platform carbonates, Murge Plateau (southern Italy)
No full textThe Upper Cretaceous carbonates cropping out in the Murge Plateau are good analogues of the fractured and faulted carbonate oil reservoirs of southern Italy. For this reason, a detailed field analysis focused on
structural architecture of fault and fracture networks has been carried out in the Murge Plateau. The well-bedded carbonates exposed there are crosscut by a set of bed-parallel stylolites and two sets of bedperpendicular cross-orthogonal joints/veins. These structural elements were likely formed under vertical loading during burial diagenesis and flexure of the Apulian foreland of the Southern Apennines fold-andthrust belt. Bed-parallel stylolites and bed-perpendicular cross-orthogonal joints/veins represent the background deformation that was overprinted by the fault-related localized deformation. The fault sets
documented in the study area are arranged in two kinematically-compatible fault networks. The first one is made up ofWNW-ESE and NNW-SSE oriented strike-slip faults, right- and left-lateral, respectively, and NWeSE oriented normal faults. The second fault network consists of WNW-ESE oriented left-lateral strike-slip faults, and NEeSW oriented normal faults. First, both architecture and dimensional parameters of the fault and fracture networks have been characterized and computed by means of statistical analysis. Then, the permeability structures associated to the aforementioned networks have been assessed in order to determine the role exerted by fault architecture and dissolution/cementation processes on the fluid storage and migration pathways within the studied platform carbonates. Network 1 faults show a quite variable fluid behavior, in which the fluid flow is strongly affected by inherited structural elements and karst dissolution, whereas network 2 faults show a more uniform, fluid conduit behavior
Evolution of the Gelasian (Pleistocene) slope turbidite systems of southern Marche (Peri-Adriatic basin, central Italy)
No full textExamples of slope channels and canyons being diverted by structurally related sea-floor topography are commonly found both on the modern seabed and in the subsurface, in deep-water fold and thrust belts but their depositional histories have rarely been documented using examples from outcrop. The synthesis of outcrop (original geological field mapping at 1:10,000 scale) and subsurface data sets from the early Pleistocene stratigraphic succession of the Peri-Adriatic basin provides a window into the overall evolutionary pattern of large intraslope turbidite systems that, during the Gelasian (2.58–1.80 Ma), shed Apennine-derived clastic sediments into the adjacent deep-water basin. Trends from mapping and paleocurrent indicators converge to indicate that the sea-floor bathymetric expression of a thrust-related anticline, the north-trending Jesi-Nereto-Zaccheo structure, likely influenced the downslope transport direction of gravity flows and sediment dispersal pattern. During early and middle Gelasian time, coarse-grained turbidite deposition occurred on the western flank of the intraslope anticline by westerly sourced, northward-flowing turbidity currents, indicating that the opposing sea-floor topography was sufficient to cause the diversion of turbidite systems, forcing them to travel near parallel to the east-facing regional paleoslope for significant distances. By very late Gelasian time, the intraslope accommodation space on the western flank of the anticline had filled and turbidites were dispersed through dip-oriented conduits incising across the crest of the underlying structure
Caratterizzazione di farmaci polimorfi: terfenadina
No full textLo studio riguarda la caratterizzazione dello stato solido dei diversi polimorfi della terfenadina ottenuti mediante idonee procedure di cristallizzazion
Neutron techniques in the study of materials for fusion reactors.
No full textSome recent applications of neutron scattering techniaues to structural materials for fusion reactors are reported. Namely the growth of helium bubbles in candidate steels and model alloys has been investigated by Small Angle Neutron Scattering (SANS). The thermal stress produced to simulate the effect of plasma disruption in first wall mock-ups has been studied by neutron diffraction
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