196,135 research outputs found
Riforma di un appartamento nella Torre Velasca a Milano
No full textPubblicato in: M. Vercelloni, La rarefazione allusiva, in “Casa Vogue”, n. 170, gennaio 1986;
M. Casamonti, Abitare la Torre. Angelo Torricelli. Milano 1985, in Aa. Vv., Nuove abitazioni in Italia, a cura di S. San Pietro, L’Archivolto, Milano 1993;
G. Anedi, Architettura tra interno ed esterno, in “Argomenti di Architettura”, n.1, 2000
Photochemistry of some fluoroquinolones. Effect of pH and chloride ion
No full textA 6-fluoroquinolone (norfloxacin) and the naphthyridine analogue enoxacin give the corresponding 6-hydroxy derivatives by irradiation in water at pH 7.2 and, with lower efficiency, at pH 4.5 and 10. At pH 1 no defluorination takes place and the piperazinyl side chain is degraded. The 6,8-difluoro derivative lomefloxacin is defluorinated selectively from position 8 over the entire pH range considered (pH 1 to 10). The intermediate cation in position 8 does not add water and rather undergoes insertion into the β-CH bond of the neighboring N-ethyl group. The cation adds chloride, however. The structure–photoreactivity relationship for fluoroquinolones and the relation with the known phototoxicity of these compounds are commented upon
Risanamento conservativo e parziale riforma interna del “Castello di Sem Benelli” a Zoagli, Genova
No full textPubblicato in: M. Vercelloni, Il castello delle beffe, in “Casa Vogue”, n. 176, luglio-agosto 1986
Correlations of Electrical Properties and Molecular Structure Measured by Junctions Incorporating Self Assembled Monolayers
No full textElectron transfer processes through organic molecules have been studied extensively i) in the last 30 years using transient spectroscopy in donor-acceptor supramolecular systems1 ii) in the last decade using an electrochemical approach in self assembled monolayers (SAMs) organized at the electrode interface. 2 We measured electron transfer rate through molecular systems as current flowing between molecules sandwiched between two metal electrodes.
Fabrication of metal-molecule-metal junction is a challenging task. We report a series of studies of electron transfer processes carried out in junctions that are based on Hg electrodes (Fig 1), Hg-SAM//SAM-M, where M is a metal surface (Au, Ag, Hg). The junctions are easy to assemble (because the mercury electrode is compliant) and compatible with SAMs incorporating organic groups having a range of structures. We used two different types of junction. 1)Two electrodes junctions are used to measure the current flowing through SAMs of different chemical structure, sandwiched between the electrodes and to correlate electron transfer rate with the chemical structure of molecules (Interfacers 1 and 2 in Fig 1).3,4,5 . When photoactive molecules are incorporate in the SAMs, the current flowing through the junction changes upon irradiation
Milano: Castello, Quartiere delle milizie, Città militare nella trasformazione del centro e nella costruzione della periferia
No full text
Restauro e ampliamento della Cascina San Pietro a Piverone, Torino
No full textPubblicato in: A. Acocella, L’architettura dei luoghi, Edizioni Laterconsult, Roma 1992;
A. Acocella, Tetti in laterizio, Edizioni Laterconsult, Roma 1994;
L. Salvadori, L’architettura dei luoghi, in “Casabella”, n. 602, giugno 1993;
E. Faroldi, La “cascina di Bacco”. Restauro ed ampliamento della Cascina San Pietro a Piverone, in “Recuperare”, n. 3, aprile 1994;
M. Aprile, Casa dolce casa. Riflessioni, esempi, divagazioni sulla casa unifamiliare contemporanea, Flaccovio Editore, Palermo 1997;
P. Righetti, Casa con transetto, in “Modulo”, n. 247, dicembre 1998;
G. Anedi, Architettura tra interno ed esterno, in “Argomenti di Architettura”, n. 1, 2000
A versatile experimental approach for understanding electron transport through organic materials
No full textThis paper describes an experimentally simple method for assembling junctions with nanometer-scale, structured organic films positioned between two metal electrodes. These junctions comprise two metal electrodes that sandwich two self-assembled monolayers (SAMs) - that is, metal (mercury)-SAM//SAM-metal (mercury, gold or silver) junctions. The junctions are easy to assemble (because the mercury electrode is compliant) and they are compatible with SAMs incorporating organic groups having a range of structures. This paper describes three different variations on this type of Hg-based junction. The first junction, formed by two contacting mercury drops covered by the same type of SAM, is a prototype system that provided useful information on the structure and electrical properties of the Hg-based junctions. The second junction consists of a Hg drop covered by one SAM (Hg-SAM(1)) in contact with a second SAM supported on a silver film (Ag-SAM(2)) - that is, a Hg-SAM(1)//SAM(2)-Ag junction. This junction allowed systematic measurements of the current that flowed across SAM(2), as a function of structure (for example, using aliphatic or aromatic thiols of different length), and a common SAM(1) of hexadecane thiol. The current density follows the relation I = I0e-βdAg,Hg, where dAg,Hg is the distance between the electrodes, and β is the structure-dependent attenuation factor for the molecules making up SAM(2): β was 0.87 ± 0.1 Å-1 for alkanethiols, 0.61 ± 0.1 Å-1 for oligophenylene thiols, and 0.67 ± 0.1 Å-1 for benzylic derivatives of oligophenylene thiols, in general agreement with the values calculated by other approaches. The same type of junction, but using SAM(1) and SAM(2) carrying suitable chemical groups, X and Y, was used to measure the rate of electron transfer across different types of functional groups and bonds: van der Waal interactions, H bonds, and covalent bonds. The third type of junction, Hg-SAM//R//SAM-Hg, is an electrochemical junction that can (i) trap redox-active molecules (R) in the interfacial region between the SAMs, and (ii) control the potential of the electrodes with respect to the redox potential of R using an external reference electrode. This system shows I-V curves with steps that can be interpreted in terms of redox cycling mechanism. © 2002 Elsevier Science B.V. All rights reserved
Concorso appalto internazionale ad inviti per “Design and Construction of Buildings at the Site of the JRC Ispra, Commission of European Communities”
No full textPubblicato in: E. Faroldi, Eco Centre, Ispra, in “Costruire in laterizio”, n. 64, luglio-agosto, 1998
Edificio per alloggi di edilizia sovvenzionata a Legnano (Mi)
No full textPubblicato in: A. Franchini, P. Righetti, Tipologie residenziali contemporanee. Manuale di realizzazioni europee degli ultimi vent’anni, Be-Ma Edizioni, Milano 2000
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