Repositorio IPICyT: Envíos recientes
Mostrando ítems 1061-1080 de 2345
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Cobalt double-ring and double-dot structures: Magnetic properties
(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 ... -
Pseudo-random bit generator based on multi-modal maps
(2015)"In this work we present a pseudo-random Bit Generator via unidimensional multi-modal discrete dynamical systems calledk-modal maps. These multi-modal maps are based on the logistic map and are useful to yield pseudo-random ... -
Strange attractors generated by a fractional order switching system and its topological horseshoe
(2016)"Chaos generation in a new fractional order unstable dissipative system with only two equilibrium points is reported. Based on the integer version of an unstable dissipative system (UDS) and using the same systems parameters, ... -
Difference map and its electronic circuit realization
(2013)"In this paper we study the dynamical behavior of the one-dimensional discrete-time system, the so-called iterated map. Namely, a bimodal quadratic map is introduced which is obtained as an amplification of the difference ... -
Synchronization and activation in a model of a network of β-cells
(2011)"Islets of pancreatic β-cells are of utmost importance in the understanding of diabetes mellitus. We consider here a model of a network of such pancreatic β-cells which are globally coupled via gap junctions. Some of the ... -
Practical mediated-assembly synthesis of silver nanowires using commercial Camellia sinensisextracts and their antibacterial properties
(2018)"Camellia sinensis is a well-known plant used for health purposes due to its high phenolic compound content and antioxidant properties. For the first time, the infusion of green tea has allowed the growth and stabilization ... -
Widening of the basins of attraction of a multistable switching dynamical system with the location of symmetric equilibria
(2017)"A switching dynamical system by means of piecewise linear systems in that presents multistability is presented. The flow of the system displays multi-scroll attractors due to the unstable hyperbolic focus-saddle equilibria ... -
Cerium-doped β-Ni(OH)2 hexagon nanosheets: an effective photocatalyst for the degradation of the emerging water pollutant, naproxen
(2018)"Nickel hydroxide β–Ni(OH)2 hexagonal nanosheets were synthetized via a hydrothermal exfoliation process. The practical microwave-assisted hydrothermal method facilitated obtaining layered nickel 3D nanoplates with cerium ... -
Performance monitoring of heat exchangers via adaptive observers
(Elsevier, 2007)"In this paper, a method for monitoring the performance degradation in a heat exchanger is presented. This method is based on the use of an adaptive observer which estimates the overall heat transfer coefficient U. The ... -
Enlarged sheet of ZnS(en)0.5 hybrid semiconductors with photocatalytic activity
(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 ... -
A functional assembly of SiO2 nanospheres/graphene oxide composites
(Elsevier, 2015)"A novel assembly of SiO2 nanospheres functionalized on graphene oxide (GO) sheets was prepared by a one-step microwave-hydrothermal method. The nanocomposites were well characterized and investigated to study their Rhodamine ... -
Open problems related to the Hurwitz stability of polynomials segments
(Hindawi, 2018)"In the framework of robust stability analysis of linear systems, the development of techniques and methods that help to obtain necessary and sufficient conditions to determine stability of convex combinations of polynomials ... -
Adaptive tracking via pinning in networks of nonidentical nodes
(2018)"We investigate the control of dynamical networks for the case of nodes, that although different, can be make passive by feedback. The so-called V-stability characterization allows for a simple set of stabilization conditions ... -
Constant-length random substitutions and gibbs measures
(2018)"This work is devoted to the study of processes generated by random substitutions over a finite alphabet. We prove, under mild conditions on the substitutions rule, the existence of a unique process which remains invariant ... -
Formation and atomic structure of hierarchical boron nitride nanostructures
(2015)"We report a combined experimental and theoretical study of boron nitride (BN) nanostructures synthesized by ball milling methodology. The BN nanostructures were obtained using h-BN powder under low-vacuum conditions and ... -
Global trajectory tracking through output feedback for robot manipulators with bounded inputs
(2011)"In this work, a globally stabilizing output feedback scheme for the trajectory tracking of robot manipulators with bounded inputs is proposed. It achieves the motion control objective avoiding input saturation and excluding ... -
Promotional effect of Rh nanoparticles on WO3/TiO2 titanate nanotube photocatalysts for boosted hydrogen production
(2018)"In this work, we explore the hydrogen production via the water splitting process on Rh-WO3 photocatalysts supported on nanotubes of TiO2. H2 production tests were performed in a 2-propanol-water solution. The support ... -
Synthesis of protonated titanate nanotubes tailored by the washing step: Effect upon acid properties and photocatalytic activity
(2017)"In this work, the acid and photocatalytic properties of titanate nanotubes (NTs) were surveyed. The surface acidity of the NTs was characterized by FTIR with lutidine and pyridine. The photocatalytic degradation of phenol ... -
Maximal unstable dissipative interval to preserve multi-scroll attractors via multi-saturated functions
(2016)"In this paper, we present families of piecewise linear systems which are controlled by a continuous piecewise monoparametric control function for the generation of monoparametric families of multi-scroll attractors. Thus, ... -
Trends in nanoscience, nanotechnology, and carbon nanotubes: a bibliometric approach
(2014)"Carbon nanotubes are currently one of the most important materials due to their strong mechanical resistance, light weight, and transport properties. Since the publication of Ijima’s paper on tubular carbon structures ...