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71.
We briefly describe how to introduce the basic notions of noncommutative differential geometry on the 3-dim quantum space covariant under the quantum group of rotations SO
q(3). 相似文献
72.
In the field of the Jacobian conjecture it is well-known after Dru?kowski that from a polynomial ‘cubic-homogeneous’ mapping we can build a higher-dimensional ‘cubic-linear’ mapping and the other way round, so that one of them is invertible if and only if the other one is. We make this point clearer through the concept of ‘pairing’ and apply it to the related conjugability problem: one of the two maps is conjugable if and only if the other one is; moreover, we find simple formulas expressing the inverse or the conjugations of one in terms of the inverse or conjugations of the other. Two nontrivial examples of conjugable cubic-linear mappings are provided as an application. 相似文献
73.
Erika Ferrari Romano Grandi Sandra Lazzari Gaetano Marverti Maria Cecilia Rossi Monica Saladini 《Polyhedron》2007
The NMR study on the interaction of Pt(II) with Amadori compounds is performed. The Amadori compounds are derived from the reaction of β-d-glucose with l-cystine leading to N,N′-di-(1-deoxy-β-fructos-1-yl)-l-cystine [FruCyscys], and with l-methionine leading to N-(1-deoxy-β-fructos-1-yl)-l-methionine [FruMet]. 相似文献
74.
Giuseppe Mensitieri Domenico Larobina Gaetano Guerra Vincenzo Venditto Maurizio Fermeglia Sabrina Pricl 《Journal of Polymer Science.Polymer Physics》2008,46(1):8-15
The transport of chloroform in films of atactic polystyrene and of semicrystalline syndiotactic polystyrene in its nanoporous form (δ‐form) has been investigated by gravimetric analysis. Experimental tests have been performed at 35, 49, and 56 °C and at several vapor pressures ranging from 0.5 to 100 Torr. Nonequilibrium lattice fluid prediction of the amorphous sorption behavior was used to enucleate the sorption contribution of the crystalline nanoporous phase from semicrystalline samples. Sorption behavior of the crystalline phase has been interpreted on the basis of Langmuir equation. Moreover, the chloroform sorption at low activities in the crystalline nanoporous phase has been predicted by using Grand Canonical Monte Carlo molecular simulations. Isosteric heats of sorption were also experimentally evaluated for the crystalline phase, and compared with the corresponding prediction of molecular simulation. © 2007 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 46: 8–15, 2008 相似文献
75.
76.
77.
Enrico Aiello Salvatore Plescia Gaetano Dattolo 《Journal of heterocyclic chemistry》1976,13(3):615-617
The title compounds were obtained by reaction of aminopyrazoles IV and VII with ω-acetophenonesulfonyl chloride (II, R = C6H5). In agreement with the general pattern of the distribution of electron density in the pyrazole nucleus, this work confirms that the position 4 of ring is the favoured site of electrophilic attacks. 相似文献
78.
Gaetano Villari 《Annali di Matematica Pura ed Applicata》1965,69(1):191-200
Sommario Si studia il fenomeno della persistenza di soluzioni periodiche per una classe di sistemi di tre equazioni differenziali ordinarie
soggetti a particolari perturbazioni, e si stabilisce un criterio di esistenza di soluzioni periodiche che estende un analogo
risultato valido per equazioni del terz ordine.
Ricerca eseguita nell'ambito del Gruppo di Ricerca n. 11 del C. N. R. 相似文献
79.
Gaetano Fichera 《Milan Journal of Mathematics》1979,49(1):19-48
The paper is concerned with results obtained in the problem consisting in determining the qualitative properties of the electric density and of the electric field originated by a load in equilibrium on a closed surface. In particular the asymptotic behaviour of both of them near the points and the edges of the conducting surface are studied. 相似文献
80.
Synthesis of sulphur containing fused ring heterocycles by intramolecular 1,3-dipolar-cycloadditions
Luisa Garanti Alberto Locatelli Gaetano Zecchi 《Journal of heterocyclic chemistry》1976,13(3):657-659
Sulfur containing fused triazoles and pyrazoles are synthesized through intramolecular cycloadditions of properly functionalized azides and nitrileimines, respectively. 相似文献