Listar División de Nanociencias y Materiales por autor "Elsevier"

Mostrando ítems 1-20 de 32

    • A simple electronic circuit realization of the tent map 

      Campos Cantón, Eric; Rosu Barbus, Haret-Codratian (2009)
      "We present a very simple electronic implementation of the tent map, one of the best-known discrete dynamical systems. This is achieved by using integrated circuits and passive elements only. The experimental behavior of ...

    • Adsorption of molecular gases on porous materials in the SAFT-VR approximation 

      Rosu Barbus, Haret-Codratian (2010)
      "A simple molecular thermodynamic approach is applied to the study of the adsorption of gases of chain molecules on solid surfaces. We use a model based on the Statistical Associating Fluid Theory for Variable Range (SAFT-VR) ...

    • An alternative factorization of the quantum harmonic oscillator and two-parameter family of self-adjoint operators 

      Rosu Barbus, Haret-Codratian (2012)
      "We introduce an alternative factorization of the Hamiltonian of the quantum harmonic oscillator which leads to a two-parameter self-adjoint operator from which the standard harmonic oscillator, the one-parameter oscillators ...

    • Barotropic FRW cosmologies with Chiellini damping 

      Rosu Barbus, Haret-Codratian; Mancas, Stefan C; Chen, Pisin (2015)
      "It is known that barotropic FRW equations written in the conformal time variable can be reduced to simple linear equations for an exponential function involving the conformal Hubble rate. Here, we show that an interesting ...

    • Carbon sponge-type nanostructures based on coaxial nitrogen-doped multiwalled carbon nanotubes grown by CVD using benzylamine as precursor 

      Muñoz Sandoval, Emilio; Cortés López, Alejandro Javier; Flores Gómez, Beatriz; Fajardo Díaz, Juan Luis; Sánchez Salas, Roque; López Urías, Florentino (2017)
      "Carbon sponges-type nanostructures (CSTN) based on coaxial nitrogen-doped multiwalled carbon nanotubes (CA-MWCNTs) were synthesized using the aerosol assisted chemical vapor deposition method involving the decomposition ...

    • Cobalt double-ring and double-dot structures: Magnetic properties 

      López Urías, Florentino; Torres Heredia, José Jesús; Muñoz Sandoval, Emilio (2016)
      "The magnetization reversal mechanism of nanostructures of cobalt double-rings (D-rings) and double-dots (D-dots) is investigated in the framework of micromagnetic simulations. The arrays contain two identical coupled rings ...

    • Cyclotomy and Ramanujan sums in quantum phase locking 

      Planat, Michel; Rosu Barbus, Haret-Codratian (2003)
      "Phase-locking governs the phase noise in classical clocks through effects described in precise mathematical terms. We seek here a quantum counterpart of these effects by working in a finite Hilbert space. We use a coprimality ...

    • Efficient carbon nanotube sponges production boosted by acetone in CVD-Synthesis 

      Cortés López, Alejandro Javier; Muñoz Sandoval, Emilio; López Urías, Florentino (2018)
      "A high production of nitrogen-doped carbon nanotube sponges (N-CNS) was obtained at 1020 °C with 4 h of growth in an aerosol-assisted chemical vapor deposition (AACVD) experiment modified with two independent sprayers ...

    • Enlarged sheet of ZnS(en)0.5 hybrid semiconductors with photocatalytic activity 

      Hernández Gordillo, Agileo; Rodríguez González, Vicente; Maya Flores, Etel (2015)
      "Sheets of ZnS(en)0.5 hybrid semiconductors were prepared by the precipitation method in an ethylenediamine–water solution and it was enlarged by varying the aging at a long period time. The characterization of the hybrid ...

    • Ermakov systems with multiplicative noise 

      Rosu Barbus, Haret-Codratian (2014)
      "Using the Euler-Maruyama numerical method, we present calculations of the Ermakov-Lewis invariant and the dynamic, geometric, and total phases for several cases of stochastic parametric oscillators, including the simplest ...

    • Ermakov-Lewis invariants and Reid systems 

      Mancas, Stefan C; Rosu Barbus, Haret-Codratian (2014)
      "Reid´s mth-order generalized Ermakov systems of nonlinear coupling constant ? are equivalent to an integrable Emden-Fowler equation. The standard Ermakov-Lewis invariant is discussed from this perspective, and a closed ...

    • Ermakov-Ray-Reid systems with additive noise 

      Cervantes López, Ernesto; Espinoza Padilla, Pedro Basilio; Gallegos Infante, Luis Armando; Rosu Barbus, Haret-Codratian (2015)
      "Using the methods developed by us in Cervantes-López et al. (2014) for multiplicative noises, we present results on the effects of the additive noise on the Ermakov-Lewis invariant. This case can be implemented in the ...

    • Existence of periodic orbits in nonlinear oscillators of Emden-Fowler form 

      Mancas, Stefan C; Rosu Barbus, Haret-Codratian (2016)
      "The nonlinear pseudo-oscillator recently tackled by Gadella and Lara is mapped to an Emden-Fowler (EF) equation that is written as an autonomous two-dimensional ODE system for which we provide the phase-space analysis and ...

    • Gold-TiO2-Nickel catalysts for low temperature-driven CO oxidation reaction 

      Hinojosa Reyes, Mariana; Zanella, Rodolfo; Maturano Rojas. Viridiana; Rodríguez González, Vicente (2016)
      "Nickel-doped-TiO2 catalysts were prepared by the sol–gel method and surface modified with gold nanoparticles (AuNPs) by the urea-deposition-precipitation technique. The as-synthesized catalysts were characterized by X-ray ...

    • Hydrogen production by tailoring the brookite and Cu2O ratio of sol-gel Cu-TiO2 photocatalysts 

      Hinojosa Reyes, Mariana; Camposeco Solís, Roberto; Zanella, Rodolfo; Rodríguez González, Vicente (2017)
      "Cu-TiO2 photocatalysts were prepared by the sol-gel method. Copper loadings from, 1.0 to 5.0 wt % were used. The materials were annealed at different temperatures (from 400 to 600 °C) to study the formation of brookite ...

    • Including transcription factor information in the superparamagnetic clustering of microarray data 

      Monsiváis Alonso, María del Pilar; Navarro Muñoz, Jorge Carlos; Riego Ruíz, Lina Raquel; López Sandoval, Román; Rosu Barbus, Haret-Codratian (2010)
      "In this work, we modify the superparamagnetic clustering algorithm (SPC) by adding an extra weight to the interaction formula that considers which genes are regulated by the same transcription factor. With this modified ...

    • Integrable dissipative nonlinear second order differential equations via factorizations and Abel equations 

      Mancas, Stefan C; Rosu Barbus, Haret-Codratian (2013)
      "We emphasize two connections, one well known and another less known, between the dissipative nonlinear second order differential equations and the Abel equations which in its first kind form have only cubic and quadratic ...

    • Iron oxide nanoparticles (IONPs) with potential applications in plasmid DNA isolation 

      Sosa Acosta, José Raúl; Silva, José Ángel; Fernandez Izquierdo, Leunam; Díaz Castañón, Sergio; Ortiz, Mayreli; Zuaznabar-Gardona, Julio César; Díaz García, Alicia (2018)
      "DNA extraction and purification is considered a critical step in different biomedical applications such as genetic therapy and clinical diagnosis. This research describes the synthesis and characterization of functionalized ...

    • Magnetic matrices used in high gradient magnetic separation (HGMS): a review 

      Ge, Wei; Encinas Oropesa, Armando; Araujo Palomo, Elsie Evelyn; Song, Shaoxian (2017)
      "HGMS is effective in separating or filtering fine and weakly magnetic particles and widely applied in mineral processing, water treatment, cell and protein purification. The magnetic matrix is a crucial device used in ...

    • Multifractal analyses of row sum signals of elementary cellular automata 

      Murguía, José; Rosu Barbus, Haret-Codratian (2012)
      "We first apply the WT-MFDFA, MFDFA, and WTMM multifractal methods to binomial multifrac-tal time series of three different binomial parameters and find that the WTMM method indicates an enhanced difference between the fractal ...