Browsing Artículos 2014 by Title

Now showing items 87-106 of 106

    • Search for gravitational waves associated with gamma-ray bursts detected by the InterPlanetary Network 

      Aasi, J.; Domínguez, E.; Maglione, C.; Ortega, W.; Reula, O.; Wolovick, N.; LIGO Scientific Collaboration; Virgo Collaboration (2014)
      We present the results of a search for gravitational waves associated with 223 γ-ray bursts (GRBs) detected by the InterPlanetary Network (IPN) in 2005-2010 during LIGO´s fifth and sixth science runs and Virgo´s first, ...

    • Self-avoiding walks on a bilayer Bethe lattice 

      Serra, Pablo; Stilck, Jürgen F. (2014)
      We propose and study a model of polymer chains in a bilayer. Each chain is confined in one of the layers and polymer bonds on first neighbor edges in different layers interact. We also define and comment results for a ...

    • Silver L1, L2 and L3 cross-sections for ionization and x-ray production by electron impact 

      Sepúlveda Peñaloza, Andrés Humberto; Bertol, Ana Paula; Vasconcellos, M. A. Z.; Trincavelli, Jorge; Hinrichs, R.; Castellano, Gustavo Eugenio (2014)
      The experimental determination of ionization cross-sections and total x-ray production cross-sections under electron impact is carried out for the three silver L-subshells. The very complex spectral structure involving ...

    • Single-parameter spin-pumping in driven metallic rings with spin-orbit coupling 

      Ramos Andrade, Juan Pablo; Foa Torres, Luis Eduardo Francisco; Orellana, P. A.; Apel, Víctor Marcelo (2014)
      We consider the generation of a pure spin-current at zero bias voltage with a single time-dependent potential. To such end we study a device made of a mesoscopic ring connected to electrodes and clarify the interplay between ...

    • Some totally geodesic submanifolds of the nonlinear Grassmannian of a compact symmetric space 

      Salvai, Marcos Luis (2014)
      Let M and N be two connected smooth manifolds, where M is compact and oriented and N is Riemannian. Let E be the Fréchet manifold of all embeddings of M in N, endowed with the canonical weak Riemannian metric. Let ∼ be the ...

    • Spherical functions : the spheres vs the projective spaces 

      Tirao, Juan Alfredo; Zurrián, Ignacio Nahuel (2014)
      In this paper we establish a close relationship between the spherical functions of the n-dimensional sphere Sn ≃ SO(n + 1)/SO(n) and the spherical functions of the n-dimensional real projective space P n(R) ≃ SO(n + ...

    • Spherical functions associated with the three dimensional sphere 

      Pacharoni, María Inés; Zurrián, Ignacio Nahuel; Tirao, Juan Alfredo (2014)
      In this paper, we determine all irreducible spherical functions of any K-type associated to the pair (G;K) = (SO(4); SO(3)). This is accomplished by associating to a vector valued function H = H(u) of a real variable ...

    • Spherical functions of fundamental K-types associated with the n-dimensional sphere 

      Tirao, Juan Alfredo; Zurrián, Ignacio Nahuel (2014)
      In this paper, we describe the irreducible spherical functions of fundamental K-types associated with the pair (G, K) = (SO(n + 1), SO(n)) in terms of matrix hypergeometric functions. The output of this description is that ...

    • Stopping power of palladium for protons in the energy range 0.300-3.100 MeV 

      Miranda, P. A.; Sepúlveda, A.; Morales, J.R.; Burgos, E.; Fernández, H.; Rodríguez Cabello, Tabatha Pamela (2013)
      The stopping power of palladium for protons has been measured using the transmission method with an overall uncertainty of around 5% over the energy range Ep=(0.300–3.100) MeV. These stopping power data are then compared ...

    • Strictly positive solutions for one dimensional nonlinear elliptic problems 

      Kaufmann, Uriel; Medri, Iván Vladimir (2014)
      We study the existence and nonexistence of strictly positive solutions for the elliptic problems -- in a bounded open interval, with zero boundary conditions, where -- is a strongly uniformly elliptic differential operator, ...

    • Study of Kb X-ray emission spectroscopy applied to Mn(2x)V(1-x)O4 (x=0 and1/3) oxyspinel and comparison with XANES 

      Ceppi, Sergio Andrés; Mesquita, A.; Pomiro, Fernando; Pannunzio Miner, Elisa Victoria; Tirao, German Alfredo (2014-03)
      Oxidation state and coordination of transition metal cations seems to be hard to assess when considering multiple cations, each one with different possible oxidation states. In fact, this is the case of the spinel-type ...

    • Study of lead levels in soils by weathering of metallic Pb bullets used in dove hunting in Córdoba, Argentina 

      Rubio, Marcelo; Germanier, Alejandro; Mera, María Fernanda; Faudone, Sonia Nerina; Sbarato, Rubén Darío; Campos, José Manuel; Zampar, Vanesa; Bonzi, Edgardo Venusto; Pérez, Carlos (2014)
      A study of level of Pb in soils of the center-north of the Province of Córdoba, a worldwide recognized tourist region for dove hunting, was performed in this work. The native forest of the region has a great population ...

    • Study of the characteristic parameters of the normal voices of Argentinian speakers 

      Bonzi, Edgardo Venusto; Grad, Gabriela B.; Maggi, Alicia M.; Muñóz, Marta R. (2014)
      The voice laboratory permits to study the human voices using a method that is objective and noninvasive. In this work, we have studied the parameters of the human voice such as pitch, formant, jitter, shimmer and harmonic-noise ...

    • Swap logic 

      Areces, Carlos Eduardo; Fervari, Raúl Alberto; Hoffmann, Guillaume Emmanuel (2014)
      We investigate dynamic modal operators that can change the model during evaluation. We define the logic SL by extending the basic modal language with the ♦ modality, which is a diamond operator that in addition has the ...

    • Synthesis, structural characterization and magnetic properties of the monoclinic ordered double perovskites BaLaMSbO6, with M = Mn, Co and Ni 

      Blanco, M. Cecilia; De Paoli, Juan M.; Ceppi, Sergio; Tirao, Germán Alfredo; Nassif, Vivian M.; Guimpel, J.; Carbonio, Raúl E. (2014)
      Double perovskites BaLaMnSbO6, BaLaCoSbO6 and BaLaNiSbO6, were synthesized by conventional ceramic method in air, as polycrystalline powders. The Mn and Ni compounds belong to the I 2/m monoclinic space group, while the ...

    • Tailoring optical fields emitted by nanometric sources 

      Bustos Marún, Raúl Alberto; Dente, Axel Damián; Coronado, Eduardo Andrés; Pastawski, Horacio Miguel (2014)
      In this work we study a simple way of controlling the emitted fields of sub-wavelength nanometric sources. The system studied consists of arrays of nanoparticles (NPs) embedded in optical active media. The key concept is ...

    • The growth of ice particles in a mixed phase environment based on laboratory observations 

      Castellano, Nesvit Edit; Ávila, Eldo Edgardo; Burgesser, Rodrigo Exequiel; Saunders, Clive P. R. (2014)
      This paper describes new laboratory observations about the size evolution of ice crystals and cloud droplets immersed in a mixed-phase cloud. The experiments were performed by using a cloud chamber facility for three ...

    • Virtual laboratory for a first experience in dynamics 

      Ré, Miguel Ángel; Giubergia, María Fernanda (2014)
      New technologies contribute to the learning process of scientific disciplines. In particular Physics learning may take advantage of these techniques by implementing experimental practices in simulation environments. Our ...

    • Water and membrane dynamics in suspensions of lipid vesicles functionalized with poly(ethylene glycol)s 

      Clop, Eduardo Matias; Chattah, Ana Karina; Perillo, María Angélica (2014-05-08)
      The present work was aimed at studying the molecular dynamics at different levels of model membranes having a simulated glycoclix, with focus on the molecular crowding conditions at the lipid–water interfacial region. Thus, ...

    • Weighted inequalities for some integral operators with rough kernels 

      Riveros, María Silvina; Urciuolo, Marta (2014)
      In this paper we study integral operators with kernels K(x, y) = k1(x − A1y)...km(x − Amy), ki(x) = Ωi(x) |x|n/qi where Ωi : Rn → R are homogeneous functions of degree zero, satisfying a size and a Dini condition, Ai are ...