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Mostrando ítems 689-708 de 823
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Silica-Coated ZnS Quantum Dots for Multicolor Emission Tuning from Blue to White Light
(2021-11-04)The present work reports the easy tunability from blue to cold-white light emission of ZnS quantum dots embedded into a silica matrix (ZnS@SiO2) by simple heating treatments (up to 900 °C) without the need of rare earth ... -
Simulación de esfuerzos en diseño digital de ortesis lumbar
(2022-10-28) -
Sistema De Administración De Clientes, Ventas E Inventario Para Empresarios De Redes De Mercadeo
(2019-11)Se presenta el desarrollo de un sistema para la administración de clientes, ventas e inventario utilizado por empresarios de redes de mercadeo. Cuando la red de mercadeo empieza a crecer es difícil mantener organizada la ... -
Sistema De Monitoreo Y Control Para Invernadero Usando La Unidad De Adquisición De Datos Agilet 34970a E Interfaz En Labview
(2019-06-20)This paper describes the construction and design of a semi-automated climate monitoring and control system for a small-scale greenhouse, using sensors and actuators strategically placed inside and outside the greenhouse ... -
Sistema De Validación De Amplificadores Operacionales Y De Instrumentación Utilizando Labview
(2021-12-27)En este trabajó se realizó un sistema para validar el funcionamiento de amplificadores operacionales TLC274, LM358 y TL084 y el amplificador de instrumentación AD620. Se describe el diseño y fabricación de la tarjeta de ... -
Sistema fotovoltaico para extender el tiempo de operación de una aeronave no tripulada
(2018-12-06)En este trabajo se realiza un estudio de factibilidad para integrar un sistema fotovoltaico a una aeronave no tripulada con la finalidad de extender el tiempo de operación. El sistema se diseñó con un arreglo en serie de ... -
Sistema Vestible para la Detección Simultánea y No Invasiva del ECG y el Flujo Sanguíneo
(2018-09-01)Se desarrolló un sistema vestible para la detección simultánea y no invasiva de dos señales provenientes de la actividad cardiaca: el ECG y el flujo sanguíneo. Se utilizaron dos electrodos secos para detectar la derivación ... -
Six Sigma as a competitive strategy: main applications, implementation areas and critical success factors (CSF)
(2019-04-01)In the search for competitiveness, organizations adopt strategies to increase the cost-effectiveness of their operations and improve its position in the market. Six Sigma (SS) that was initially developed as a methodology ... -
Síntesis y Caracterización de Nanopartícula s de NiS Mediante Procedimiento de Química Suave
(2020-11-05)In this research, the synthesis and characterization of nickel sulphide (NiS) semiconductor nanoparticles (Nps) in solution is reported, the effect of glycine as complexing agent at different concentration was studied. The ... -
Sliding Mode with Equivalent Control for Induction Motor Drive Based on Multi-Pulse VSC
(2023-06-22)In this work, the application of the sliding mode equivalent control for an induction motor drive based 1 on a multi-pulse Voltage Source Converter is proposed. This is accomplished by transforming the squirrel-cage ... -
Smart architecture for software-defined networking
(2022-04-28)Software-defined networks (SDN) seek to solve the problems in current network schemes by simplifying their management through their reprogrammability and accessibility to the overall network infrastruc- ture. One aspect ... -
Social-LCA. Methodological Proposal Applied to Physical Activity Program Implementation into Old People’s Routines
(2020-06-18)Progressive population aging and life expectancy increase in Spain, resulting from medical and social improvements, have put this population segment in a privileged position for the implementation of new methodologies ... -
Sol-Gel and Electrospinning Synthesis of Lithium Niobate-Silica Nanofibers
(2019-03-26)Lithium niobate-silica fibers were produced by the combination of the sol-gel method and the electrospinning technique. Two sol-gel solutions starting from niobium-lithium ethoxide and tetraethyl orthosilicate were prepared ... -
Soluciones axial simétricas estáticas de sistemas binarios en 5D
(2021-07-05)Usando una solución esta ́tica axial simétrica que describe un sistema binario de agujeros negros idénticos en un espacio-tiempo en cuatro dimensiones (4D), construimos y estudiamos a través de la estructura de barras, una ... -
Some aspects of Zariski topology for multiplication modules and their attached frames and quantales
(2019-09-01)For a multiplication R-module M we consider the Zariski topology in the set Spec (M) of prime submodules of M. We investigate the relationship between the algebraic properties of the submodules of M and the topological ... -
Spin glass behavior in La0.7Ca0.23Sr0.07MnO3 nanofibers obtained by electrospinning
(2019-01-02)This work contributes to the development of new nanostructured mixed valence manganites and to explore and optimize their magnetic properties at 1-D level. Nanofibers of La0.7Ca0.23Sr0.07MnO3 manganite were fabricated ... -
Sputtering power e ects on the electrochromic properties of NiO lms
(2021-02-13)The effect of sputtering power (=60 W–180 W) on the electrochromic properties of nickel oxide films deposited on ITO-coated glass substrates by the radio frequency magnetron sputtering technique was investigated. Crystalline ... -
Starch Modified With Chitosan and Reinforced WithFeather Keratin Materials Produced by ExtrusionProcess: An Alternative to Starch Polymers
(2018-11-01)Starch (potato), chitosan, and feather keratin are used for processing biodegradable films produced by extrusion. The morphology of the films is examined with a scanning electron microscope and showed the excellent dispersion ...