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71.
72.
Rodolfo Nesi Stefano Chimichi Francesco De Sio Roberto Pepino Piero Tedeschi 《Tetrahedron letters》1982,23(42):4397-4400
In contrast with a previous report, permanganate oxidation of the title compound gives the nitroisoxazolone and not 3-methyl-4- nitroisoxazole-5-carboxylic acid ; a reaction pathway, involving the spirocyclisation of the carboxylate , is suggested. 相似文献
73.
Sans résuméTravail subventionné par Dirección de Investigación, Universidad de La Frontera, Temuco. Chile et CONICYT. 相似文献
74.
Giorgio Guariso Sergio Rinaldi Rodolfo Soncini-Sessa 《European Journal of Operational Research》1985,21(3):295-306
We review an application-oriented study on the management of Lake Como, a natural multipurpose reservoir in Northern Italy. The emphasis is on the Decision Support System that resulted from this study and which is now being used by the manager to take his decisions on the amount of water to be released each day from the lake. The decision support system is based on the optimal solutions of complex multiobjective mathematical programming problems. 相似文献
75.
Radu Cazan Christopher Geppert Wilfried N?rtersh?user Rodolfo Sánchez 《Hyperfine Interactions》2010,196(1-3):177-189
Sympathetic cooling by laser cooled Mg ions has been proposed as a method for fast cooling of highly charged ions to a very low temperature. The paper describes the construction of the solid state laser system at 279.63 nm required for laser cooling of the Mg ions. The laser system is composed of a fiber laser at 1,118.54 nm and two successive second harmonic generation (SHG) ring cavities for frequency quadrupling. In the first SHG cavity, non-critical phase matching of a lithium triborate (LBO) crystal is used for doubling from 1,118.54 to 559.27 nm. The second SHG cavity uses critical phase matching of a β-barium borate (BBO) crystal for doubling from 559.27 to 279.63 nm. With the aid of Boyd–Kleinmann theory, optimum experimental parameters are calculated and used for an efficient SHG. Besides this, the paper intends to be a shortcut for practical applications of the Boyd–Kleinmann theory for SHG. 相似文献
76.
Árpad Bényi Diego Maldonado Andrea R. Nahmod Rodolfo H. Torres 《Mathematische Nachrichten》2010,283(9):1257-1276
Boundedness properties for bilinear paraproducts on several function spaces are presented. The methods are based on the realization of paraproducts as bilinear Calderón‐Zygmund operators and the molecular character‐ization of function spaces. This provides a unified approach for the study of paraproducts, recovering some know results and establishing several new (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) 相似文献
77.
Árpád Bényi Diego Maldonado Virginia Naibo Rodolfo H. Torres 《Integral Equations and Operator Theory》2010,67(3):341-364
Bilinear pseudodifferential operators with symbols in the bilinear analog of all the Hörmander classes are considered and the possibility of a symbolic calculus for the transposes of the operators in such classes is investigated. Precise results about which classes are closed under transposition and can be characterized in terms of asymptotic expansions are presented. This work extends the results for more limited classes studied before in the literature and, hence, allows the use of the symbolic calculus (when it exists) as an alternative way to recover the boundedness on products of Lebesgue spaces for the classes that yield operators with bilinear Calderón–Zygmund kernels. Some boundedness properties for other classes with estimates in the form of Leibniz’ rule are presented as well. 相似文献
79.
Rodríguez-Laguna Norma Reyes-García Luis Ignacio Pacheco-Gómez Raúl Flores Raúl Rojas-Hernández Alberto Gómez-Balderas Rodolfo 《Journal of Thermal Analysis and Calorimetry》2019,136(4):1701-1709
Journal of Thermal Analysis and Calorimetry - In this work, a thermodynamic study of the Zn(II)/L systems (L??=?acetate, AcO? or indomethacin anion, Indo? or... 相似文献
80.
We study estimates for proper orthogonal decomposition eigenvectors and eigenvalues as well as error estimates between the
exact solution of a 2D Navier–Stokes model and the numerical approach when the proper orthogonal decomposition method is considered.
These estimates are also extended when bifurcation diagram are calculated using the so called p-POD or SPOD methods with a
new cut-off criterion to minimize noisy modes produced by the p-POD method. 相似文献