8,606 research outputs found
Il razionamento proteico del cavallo
No full textConfronto del razionamento proteico in 27 allevamenti di cavalli sportivi secondo il sistema delle proteine digeribili (Pd) e delle proteine digeribili cavallo (Pdc
Design of an efficient 900 GHz antenna in standard CMOS technology for imaging arrays
No full textThis paper describes and addresses the challenges that are encountered while designing a 900 GHz antenna for FET detectors using a standard submicron CMOS technology. The reduced metal stack, the problem of surface waves and technology-related rules are taken into account in order to properly design an efficient antenna, with the objective to couple it to field-effect transistor (FET) detectors in a focal-plane array configuration. Simulations on a 0.15-μm standard CMOS technology show that up to 58% efficiency with responsivity in the several kV/W range can be achieved.Accepted author manuscriptTera-Hertz Sensin
Mechanistic Insights into the Organopolymerization of N-Methyl N-Carboxyanhydrides Mediated by N-Heterocyclic Carbenes
No full textWe report on a DFT investigation of initiation, propagation; and termination in the organopolymerization of N-methyl N-carboxyanhydrides toward cyclic poly(N-substituted glycine)s, promoted by N-heterocyclic carbenes (NHC). Calculations support the experimentally based hypothesis of two competing initiation pathways. The first leading to formation of a zwitterionic adduct by nucleophilic addition of the NHC to one of the carbonyl groups of monomer. The second via acid base reactivity, starting with the NHC promoted abstraction of a proton from the methylene group of the monomer, leading to an ion-pair-type adduct, followed by nucleophilic attack of the adduct to a new monomer molecule. Chain elongation can proceed from both the initiation adducts via nucleophilic attack of the carbamate chain-end to a new monomer molecule via concerted elimination of CO, from the carbamate chain-end. Energy barriers along all the considered termination pathways are remarkably higher that the energy barrier along the chain elongation pathways, consistent with the quasi-living experimental behavior. Analysis of the competing termination pathways suggests that the cyclic species determined via MALDI-TOF MS experiments consists of a zwitterionic species deriving from nucleophilic attack of the N atom of the carbamate chain end to the C=O group bound to the NHC moiety
Note sulla scrittura greca corsiva
No full textCavallo Guglielmo. Note sulla scrittura greca corsiva. In: Scriptorium, Tome 22 n°2, 1968. pp. 291-294
Note sulla scrittura greca libraria dei papiri
No full textCavallo Guglielmo. Note sulla scrittura greca libraria dei papiri. In: Scriptorium, Tome 26 n°1, 1972. pp. 71-76
Kurt Aland. Repertorium der griechischen christlichen Papyri. I. Biblische Papyri : Altes Testament, Neues Testament, Varia, Apokryphen
No full textCavallo Guglielmo. Kurt Aland. Repertorium der griechischen christlichen Papyri. I. Biblische Papyri : Altes Testament, Neues Testament, Varia, Apokryphen. In: Scriptorium, Tome 33 n°2, 1979. pp. 306-307
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