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259 results on '"Caruso, Tonino"'

42. Proton transfer in oxidized adenosine self-aggregates.

Author

Capobianco, Amedeo, Caruso, Tonino, Celentano, Maurizio, La Rocca, Mario Vincenzo, and Peluso, Andrea

Subjects
*PROTON transfer reactions, *ADENOSINES, *DICHLOROMETHANE, *SPECTRUM analysis, *POTENTIOSTAT, *OXIDATION
Abstract

The UV-vis and the IR spectra of derivativized adenosine in dichloromethane have been recorded during potentiostatic oxidation at an optically transparent thin layer electrode. Oxidized adenosine shows a broad Zundel like absorption extending from 2800 up to 3600 cm-1, indicating that a proton transfer process is occurring. Theoretical computations predict that proton transfer is indeed favored in oxidized 1:1 self-association complexes and allow to assign all the observed transient spectroscopic signals. [ABSTRACT FROM AUTHOR]

Published
2013
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43. Holocene paleogeographic evolution of an ancient port city of the central Mediterranean area: Natural and anthropogenic modifications from Salerno city, southern Italy.

Author

Amato, Vincenzo, Aiello, Giuseppe, Barra, Diana, Caporaso, Lucia, Caruso, Tonino, Giaccio, Biagio, Parisi, Roberta, and Rossi, Amedeo

Subjects
INNER cities, PORT cities, NATURE reserves, HARBORS & the environment, ARCHAEOLOGICAL geology, BIOLOGICAL evolution
Abstract

A multidiplisciplinary study, including geomorphological, lithostratigraphical, geochronological, geochemical, and paleontological investigations, was carried out in the coastal area of Salerno city, southern Italy. The study aimed to outline the Late Glacial‐Holocene geoenvironmental evolution of Salerno's port area in response to both natural and anthropogenic factors. The geomorphological study included an examination of historic maps, which enabled a detailed reconstruction of the coastal landscape change during historic times. Lithostratigraphical analyses of three new boreholes, supported by radiocarbon and tephrochronological data, and of previously retrieved core‐successions and archaeological trenches, extends our reconstruction of the paleogeographical evolution of the Salerno coastal area back to the Late Pleistocene. Geochemical and paleontological analyses of samples from the newly acquired cores were combined with the lithofacies analyses of previously retrieved cores to detect ancient harbors in the area of the current port facilities of the city and surrounding urban areas. This work contributes to scientific debate about the specific sedimentary architectures and geochemical properties of the Salerno harbor environment and refines methodological approaches for characterizing and assessing the evolution and demise of ancient port facilities in Mediterranean coastal cities. [ABSTRACT FROM AUTHOR]

Published
2020
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49. The oxidation potential of adenosine and adenosine-thymidine base pair in chloroform solution

Author

Caruso, Tonino, Capobianco, Amedeo, and Peluso, Andrea

Subjects
Adenosine -- Structure, Adenosine -- Chemical properties, Adenosine -- Thermal properties, Oxidation-reduction reaction -- Analysis, Voltammetry -- Analysis, Entropy (Physics) -- Analysis, Chemistry
Abstract

Voltammetric methods are used for studying the oxidation potential of 2',3'-O-isopropylidene-5'-O-(tert-butyldimethylsilyl)adenosine and its change upon pairing with the complementary base thymidine in chloroform. The studies have shown that Hoogsteen and Watson-Crick association modes are of comparable stability in solution and have displayed similar oxidation potential in chloroform.

Published
2007

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