Listar Artículo en revista de investigación por título
Mostrando ítems 338-357 de 823
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Evolución piezométrica del acuífero Palomas-Guadalupe Victoria (0812) en la cuenca baja del río Casas Grandes, Ascensión, Chihuahua, México
(2021-09-23)El agua subterránea es el recurso hídrico de principal uso en las regiones áridas y semiáridas del país abasteciendo a las comunidades, industrias y agricultura. El uso intensivo del agua subterránea, aunado con las ... -
Exact analytic solution of an unsolvable class of first Lane–Emden equation for polytropic gas sphere
(2020-07-24)This article provides for thefirst time a general analytical solution to the Lane-Emden equation of thefirst kind.So far only three known analytical solutions are found in the literature, for the following values ofn: 0, ... -
Exceptional Algebraic Sets for Infinite Discrete Groups of PSL(3, C)
(2020-06-29)In this note we show that the exceptional algebraic set for an infinite discrete group in 𝑃𝑆𝐿(3,ℂ) should be a finite union of: complex lines, copies of the Veronese curve or copies of the cubic 𝑥y^2−z^3. -
Exergy analyses and optimization of a single flash geothermal power plant combined with a trans-critical CO2 cycle using genetic algorithm and Nelder–Mead simplex method
(2023-02-08)Compared with conventional fossil fuel sources, geothermal energy has several advantages. The produced geothermal energy is safe for the environment and suitable for meeting heating power needs. Because the hot water used ... -
Exergy and exergoenvironmental assessment of a geothermal heat pump and a wind power turbine hybrid system in Shanghai, China
(2023-04-24)Geothermal heat pumps are one of the most growing and cost-efective renewable energy technologies based on the temperature diference between the ground and the environment. In the cold seasons, the temperature inside the ... -
Experimental Study of the Influence of Stitched Nylon Threads in Glass-Fiber-Reinforced Polymer Two-Dimensional Multilayer Composite on Tensile Strength
(2023-10-25)Stitched filaments are known to modify the mechanical properties of glass-fiber-reinforced polymers 2D (GFRPs 2D), so studying the effect on mechanical properties is underway to determine the critical variables involved. ... -
Experimental Validation of an Aerodynamic Sectional Modeling Approach in Fixed-Wing Unmanned Aerial Vehicles
(2018-12-03)This paper presents an experimental validation of the aerodynamic sectional modeling approach as a general methodology to model the aerodynamic effects on aerial vehicles. The introduced modeling scheme also takes into ... -
Exploring the internet of things based on ESP8622: tools and case study
(2023-09-20)This project focuses on exploring internet of things based on ESP8266 by the development of an application for mobile devices with the control and monitoring operation of an automatic pet feeder. The document presents ... -
Exploring the synergetic effects of sample types on the performance of ensembles for credit risk and corporate bankruptcy prediction
(2019-05-01)Credit risk and corporate bankruptcy prediction has widely been studied as a binary classification problem using both advanced statistical and machine learning models. Ensembles of classifiers have demonstrated their ... -
Extreme binary black holes in a physical representation
(2018-10-31)Stationary axisymmetric binary systems of unequal co- and counter-rotating extreme Kerr black holes separated by a conical singularity are studied. Both solutions are identified as two three- parametric subfamilies of the ... -
Fabricación de fibras poliméricas a base de PLA obtenidas mediante electrohilado
(2020-03-05)El electrohilado es una técnica que permite la obtención de fibras poliméricas en escala micro y nanométrica, las cuales son ampliamente utilizadas en ingeniería tisular y otras áreas biomédicas como biosensores y sistemas ... -
Facile Synthesis of Ultrasmall, Highly Stable, and Biocompatible Gold Nanoparticles Stabilized with Lipoic Acid: Cytotoxicity and Structural Characterization
(2020-07-28)Using the colloidal method, and lipoic acid as a stabilizer, ultrasmall gold nanoparticles with an average size of 2.5 nm were synthesized. They are highly stable, have COOH functional groups, at concentrations lower than ... -
Factores administrativos en el despliegue efectivo de actividades de cambios rápidos: modelo de análisis factorial común
(2018-10-01)Las metodologías para cambios rápidos han sido adoptadas por muchas empresas como estrategias para ser más competitivas. Para la implementación o despliegue efectivo de estas metodologías, se han identificado factores ... -
Factores críticos para una implementación exitosa de programas de ergonomía desde la perspectiva del trabajador
(2023-05-31)La finalidad de este estudio es desarrollar una revisión sistemática de literatura para determinar el estado del arte de los factores críticos de éxito en la implementación de programas de Ergonomía, desde la perspectiva ... -
Factores de la Capacidad de Innovación en Plantas de la Industria Maquiladora de Ciudad Juárez, México
(2021-01-01)La Capacidad de Innovación –CIn– constituye una importante fuerza impulsora y de adaptación, y es considerada indispensable en las empresas que operan en ambientes de alta competencia, donde se observa una creciente ... -
Factores que influyen en la selección de un Campus del TecNM: diseño y validación de un instrumento de medida
(2022-01-19)La Capacidad de Innovación –CIn– constituye una importante fuerza impulsora y de adaptación, y es considerada indispensable en las empresas que operan en ambientes de alta competencia, donde se observa una creciente ... -
Fast and inexpensive synthesis of pentacene with high yield using 6,13-pentacenequinone as precursor
(2018-02-15)Pentacene is an important semiconductor in the field of organic electronics. In this work is presented an alternative synthesis procedure to obtain pentacene from 6,13-pentacenequinone as a precursor. Synthesis of pentacene ... -
Fatigue-Life Prediction of Mechanical Element by Using the Weibull Distribution
(2020-09-13)Applying Goodman, Gerber, Soderberg and Elliptical failure theories does not make it possible to determine the span of failure times (cycles to failure-Ni) of a mechanical element, and so in this paper a fatigue-life/Weibull ... -
Fibrosis and Hepatic regeneration mecanism
(2020-02-21)