Listar División de Nanociencias y Materiales por título
Mostrando ítems 8-27 de 566
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A robust estimation of the exponent function in the Gompertz law
(Elsevier, 2006)"The estimation of the solution of a system of two differential equations introduced by Norton et al. (1976) that is equivalent to the famous Gompertz growth law is performed by means of the recent adaptive scheme of ... -
A simple circuit with dynamic logic architecture of basic logic gates
(2010)"We report experimental results obtained with a circuit possessing dynamic logic architecture based on one of the theoretical schemes proposed by H. Peng and collaborators in 2008. The schematic diagram of the electronic ... -
A simple electronic circuit realization of the tent map
(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 ... -
A simple method for fabrication of antifuse WORM memories
(Elsevier, 2018)"A write-only-read-many (WORM) memory device was obtained by irradiating, with a commercial ultraviolet-ozone (UVO) lamp, the aluminium bottom electrode in an Al/AlOx-UVO/Al configuration. The formation of conductive paths ... -
A survey of finite algebraic geometrical structures underlying mutually unbiased quantum measurements
(2006)"The basic methods of constructing the sets of mutually unbiased bases in the Hilbert space of an arbitrary finite dimension are reviewed and an emerging link between them is outlined. It is shown that these methods employ ... -
Ablation and optical third-order nonlinearities in Ag nanoparticles
(Dove Press Ltd, 2010)"The optical damage associated with high intensity laser excitation of silver nanoparticles (NPs) was studied. In order to investigate the mechanisms of optical nonlinearity of a nanocomposite and their relation with its ... -
Acoustic emission avalanches during compression of granular manganites
(American Institute of Physics, 2018)"We have studied acoustic emission (AE) during compression of La0.8Ca0.28Sr0.08MnO2.7 manganites with different microstructures obtained by selected synthesis techniques. In ceramic samples with large grains obtained by a ... -
Additive and multiplicative noises acting simultaneously on Ermakov-Ray-Reid systems
(2016)"We investigate numerically the effect of additive and multiplicative noises on parametric oscillator systems of Ermakov-Ray-Reid type when both noises act simultaneously. We find that the main perturbation effects on the ... -
Adiabatic magnetocaloric effect in Ni50Mn35In15 ribbons
(2016-11)"Heusler-type Ni-Mn-based metamagnetic shape memory alloys (MetaMSMAs) are promising candidates for magnetic refrigeration. To increase heat exchange rate and efficiency of cooling, the material should have a high ... -
Adsorción de compuestos organosulfurados sobre nanosuperficies funcionalizadas de carbono
(2011)"Uno de los principales remanentes de azufre de los combustibles líquidos es el dibenzotiofeno (DBT) y sus derivados alquilados. Para eliminar estos compuestos comúnmente son empleados los procesos de hidrodesulfuración ... -
Adsorption of molecular gases on different porous surfaces using the statistical associating fluid theory variable range approximation
(2012)"In the thermodynamic framework of coupled statistical associating fluid theory variable range (SAFTVR) 2D and 3D models we present the theoretical predictions of the adsorption isotherms in real physical units, as it is ... -
Adsorption of molecular gases on porous materials in the SAFT-VR approximation
(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) ... -
Ag-coated heterostructures of ZnO-TiO2/delaminated montmorillonite as solar photocatalysts
(MDPI, 2017-08)"Heterostructures based on ZnO-TiO2/delaminated montmorillonite coated with Ag have been prepared by sol–gel and photoreduction procedures, varying the Ag and ZnO contents. They have been thoroughly characterized by XRD, ... -
Aleaciones ferromagnéticas con memoria de forma Ni52.2Mn34.3In13.5 obtenidas por enfriamiento ultrarrápido
(2012)"En el presente trabajo se estudia la transformación martensítica y el comportamiento magneto-estructural de cintas obtenidas por enfriamiento ultrarrápido de una aleación ferromagnética con memoria de forma con composición ... -
Aleación de Disprosio-Níquel en forma de cinta y método de síntesis
(2008-07)"La presente invención describe y reclama una nueva aleación del compuesto intermetálico DyNi2 en forma de cinta. Asimismo, se describe una cinta útil para la refrigeración magnetocalórica a bajas temperaturas formada por ... -
An alternative factorization of the quantum harmonic oscillator and two-parameter family of self-adjoint operators
(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 ... -
An amplitude-phase (Ermako-Lewis) approach for the Jackiw-Pi model of bilayer graphene
(2009)"In the context of bilayer graphene we use the simple gauge model of Jackiw and Pi to construct its numerical solutions in powers of the bias poten-tial V according to a general scheme due to Kravchenko. Next, using this ... -
An anticorrosive magnesium/carbon nanotube composite
(2008-02)"Here, we report a drastically improved anticorrosive characteristic of magnesium alloy composites with the introduction of multiwalled carbon nanotubes. Highly depressed corrosion of nanotube-filled magnesium composite ... -
Analysis of Ostwald ripening in Ni-rich Ni–Ti alloys by diffusion couples
(2014)"The coarsening kinetics of gamma' precipitates in Ni-rich Ni-Ti alloys are studied using a Ni-11-5 wt% Ti and pure Ni diffusion couple. The formed concentration gradient allowed to study the aging process at 1023 K (750 ... -
Analysis of the magnetic properties in hard-magnetic nanofibers composite
(American Institute of Physics, 2018)"The magnetic properties of the strontium hexaferrite nanoparticles were studied as they were embedded at different concentrations in poly(vinyl alcohol) (PVA) nanofibers. These nanoparticles were prepared using the Pechini ...