919 research outputs found
Nuove Prospettive per la pianificazione del territorio/New Urban Planning Perspectives
No full textIl Volume raccoglie i contributi ragionati emersi dal dibattito che si è tenuto nel corso della XI Giornata di Studio IN
Reply to: "The puzzling stability of monatomic gold wires is the result of small fluctuations"
No full textString tension and stability of magic tip-suspended nanowires
No full textMultishell helical gold nanowires were recently imaged by electron microscopy. We show theoretically that the contact with the gold tips at either end of the wire plays a crucial role and that local minima in the string tension rather than the total wire free energy determine the nanowire stability. Density functional electronic structure calculations of the simplest and thinnest coaxial gold and silver wires of variable radius and chirality were carried out. We found a string tension minimum for a single-tube gold nanowire that is chiral and consists of seven strands, in striking agreement with observation. In contrast, no such minimum was found for silver, where the s-d competition Leading to surface reconstruction is lacking
Spongicoltura sperimentale: la riproduzione asessuale di Aplysina aerophoba (Demospongiae, Verongida)
No full textSopravvivenza e crescita di Aplysina aerophoba e Sarcotragus spinosulus in un impianto pilota di spongicoltura sperimentale
No full textBiodiversità dell'area marina protetta "Capo Caccia-Isola Piana": i Litistidi delle grotte oscure
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Skeletal fibers of Sarcotragus spinosulus and Aplysina aerophoba (Porifera, Demospongiae): a histochemical study during regeneration
No full textExperimental spongeculture: asexual reproduction of Aplysina aerophoba (Demospongiae, Verongida)
No full textArgl6gly polymorphism of the beta2-adrenoceptor gene (ADRBeta2) as a susceptibility factor for nasal polyposis.
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