Repositorio IPICyT: Envíos recientes
Mostrando ítems 441-460 de 2293
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Síntesis, caracterización y evaluación de oxicloruro de bismuto (BiOCl) en fotocatálisis heterogénea
(2021-02)"El oxicloruro de bismuto (BiOCl) es un semiconductor relativamente nuevo en el ámbito de la fotocatálisis heterogénea, se ha utilizado en el tratamiento de aguas para la remoción de colorantes y algunos compuestos más ... -
Distributed integral control of multiple UAVs: precise flocking and navigation
(The Institution of Engineering and Technology, 2019)"The authors interest in this work is to perform a precise real-time flocking of multiple unmanned aerial vehicles (UAVs). A consensus-based flocking algorithm that ensures a precise security distance between UAVs is ... -
Magnetic fields produced by non-concentric and non-coplanar currents in circular loops
(IOP Publishing, 2019)"A numerical calculation for the stationary magnetic field produced by arrangements of non-concentric and non-coplanar loop current circuits is presented. The calculation is done by superposing the solution of the magnetic ... -
Itinerary synchronization between PWL systems coupled with unidirectional links
(Elsevier, 2019)"In this paper the collective dynamics of N-coupled piecewise linear (PWL) systems with different number of scrolls is studied. The coupling is in a master-slave sequence configuration, with this type of coupling we ... -
Stability analysis of orbital modes for a generalized Lane-Emden equation
(Elsevier, 2019)"We present a stability analysis of the standard nonautonomous systems type for a recently introduced generalized Lane-Emden equation which is shown to explain the presence of some of the structures observed in the atomic ... -
Improved reductive transformation of iopromide by magnetite containing reduced graphene oxide nanosacks as electron shuttles
(Elsevier, 2019)"The novel application of magnetite containing reduced graphene oxide nanosacks (MrGO-N) as electron shuttles to improve the reductive degradation of the pharmaceutical pollutant, iopromide (IOP), was evaluated. MrGO-N ... -
Electronic implementation of a dynamical network with nearly identical hybrid nodes via unstable dissipative systems
(Elsevier, 2019)"This work addresses a circuit architecture for a dynamical network composed of a type of chaotic hybrid oscillator based on Unstable Dissipative Systems (UDS). Implementing that system reveals the possibility of selecting ... -
Generalized Cornu-type spirals and their Darboux parametric deformations
(Elsevier, 2019)"We generalize the Fresnel integrals and introduce a class of spirals F-n, which contains the Cornu spiral as the case F-2. Their Darboux parametric deformations are also investigated. The F-3 spiral and some of its Darboux ... -
A first principles systematic study of the structural, electronic, and magnetic properties of Heusler X2MnZ with X = Fe, Co, Ni, Cu, Ru, Rh, Pd, Ag, Pt, Au and Z = Al, Si, Ga, Ge, In and Sn
(IOP Publishing, 2019)"An exhaustive study of the structural stability, electronic, and magnetic properties of the ternary X2MnZ Heusler alloys, in cubic and tetragonal lattice cells, is presented. We performed density-functional-theory (DFT) ... -
Giant and Reversible Inverse Barocaloric Effects near Room Temperature in Ferromagnetic MnCoGeB0.03
(Wiley, 2019)"Hydrostatic pressure represents an inexpensive and practical method of driving caloric effects in brittle magnetocaloric materials, which display first?order magnetostructural phase transitions whose large latent heats ... -
The Ilopango Tierra Blanca Joven (TBJ) eruption, El Salvador: Volcano-stratigraphy and physical characterization of the major Holocene event of Central America
(Elsevier, 2019)"The Ilopango caldera is the source of the large Tierra Blanca Joven (TBJ) eruption that occurred about 1.5 ka years ago, between ca. AD270 and AD535. The eruption dispersed volcanic ash over much of the present territory ... -
Freezing phase transition in a fractal potential
(IOP Publishing, 2019)"In this work we propose a simple example of a one-dimensional thermodynamic system where non-interacting particles are allowed to move over the [0, 1] interval, which are influenced by a potential with a fractal structure. ... -
Effect of the anchoring strength on the phase behaviour of discotic liquid crystals under face-on confinement
(IOP Publishing, 2019)"In this study we have performed molecular dynamics simulations to study a Gay-Berne discotic fluid confined in a slab geometry for a fixed confinement length. Four different anchoring strengths with a homeotropic (face-on) ... -
Lack of mutant huntingtin in cortical efferents improves behavioral inflexibility and corticostriatal dynamics in Huntington´s disease mice
(The American Physiological Society., 2019)"Abnormal communication between cerebral cortex and striatum plays a major role in the motor symptoms of Huntington’s disease (HD), a neurodegenerative disorder caused by a mutation of the huntingtin gene (mHTT). Because ... -
Effect of ball to powder ratio on the mechanosynthesis of Re2C and its compressibility
(Elsevier, 2019)"The mechanosynthesis of hexagonal rhenium carbide (Re2C) from the elements is explored as a function of the balls to powder ratio (BPR). Burgios's equation has been used to calculate the accumulated energy (Delta E-accum) ... -
Inhibition of Fungal Growth Using Modified TiO2 with Core@Shell Structure of Ag@CuO Clusters
(American Chemical Society, 2019)"The photocatalytic disinfection (PCD) properties of TiO2 have attracted attention in the research communities because the produced reactive oxygen species (ROS) allow destruction of different types of microbes, such as ... -
Determinación de los parámetros geo-morfométricos del volcán San Vicente (Chichontepec), El Salvador, a partir de datos lidar
(2021-01-29)"En este trabajo se presentan los procedimientos con los que se obtuvieron los parámetros geo-morfométricos y el mapeo de lavas del volcán San Vicente (Chichontepec) en la República de El Salvador en Centroamérica. El ... -
Estudio de micrometeoritos experimentales: Petrología, historias térmicas y conservación de la materia orgánica.
(2021-01)"Todos los años suceden al menos diez lluvias de estrellas importantes cuya tasa de meteoros por hora puede variar según qué tan densa sea la corriente de desechos cósmicos que atraviesa nuestro planeta. Esas famosas lluvias ... -
Análisis de elementos de respuesta a AC2/TrAP en promotores del begomovirus PHYVV por métodos de expresión transitoria in planta
(2021-01-27)"El virus huasteco de las venas amarillas del chile (PHYVV) es un miembro del género Begomovirus y un excelente modelo para estudiar procesos virales básicos. Su genoma está compuesto por dos moléculas de ADN circular de ... -
Metodología GHIF (Geofísica, Hidrogeoquímica, Isotopía y Fisicoquímica), para la caracterización de acuíferos fracturados/kársticos a nivel regional
(2021-02-02)"La alta heterogeneidad de los acuíferos kársticos/fracturados generalmente es ignorada, y el no tener una comprensión adecuada del funcionamiento y evolución hidrogeológica de estos sistemas suele acabar en una mala gestión ...