Artículo en revista de investigación: Envíos recientes
Mostrando ítems 241-260 de 946
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El Circo de la Física: Actividades lúdicas en la divulgación de la física
(2022-08-31)Este trabajo describe de una manera cualitativa cómo se presentan los conceptos y demostraciones físicas en El Circo de la Física, uno de los ejemplos a nivel mundial de este tipo de actividad de divulgación cien-tífica. ... -
Implementación de metodología Seis Sigma para la solución de bolas de soldadura en tablillas electrónicas
(2022-12-01)En este artículo se aborda la investigación realizada en una planta de Ciudad Juárez, Chihuahua, México, donde se trabajan diferentes modelos de tablillas electrónicas para el control de diversas partes y accesorios ... -
Energy extraction in electrostatic extreme binary black holes
(2022-12-28)Relying on the Penrose process mechanism, we study the possibility of energy extraction from a binary system composed of two extreme electrostatic black holes (BHs) oppositely charged, separated by a strut described by ... -
Propuesta de mejora para la optimización de una posición remota hibrida y su simulación
(2022-04-08)The provision of airport services to its main customers, the airlines, has become a real challenge, due to customer demands and the versatility of the aviation industry, seeking to attend to air operations in ... -
A Study of Stopping Rules in the Steepest Ascent Methodology for the Optimization of a Simulated Process
(2022-09-29)first_pagesettingsOrder Article Reprints Open AccessArticle A Study of Stopping Rules in the Steepest Ascent Methodology for the Optimization of a Simulated Process by Paulo Eduardo García-Nava *,†ORCID,Luis Alberto ... -
Abstracción y transferencia del concepto de variación en distintos contextos y representaciones
(2022-04-08)La presente investigación tiene como finalidad analizar los niveles de abstracción en el estudiante en situaciones que involucran un pensamiento variacional. Esta investigación se llevó a cabo dentro de la Universidad ... -
Semimetal transition in curved MoS2/ MoSe2 Van der Waals heterojunction by dispersion‑corrected density functional theory
(2022-10-24)We present a theoretical study for MoS2/MoSe2 Van der Waals heterojunction in the armchair direction, and periodicity in the y-direction, under the mechanical deformation process to explore electronic structure vs. curvature ... -
Comparing workload and performance during demanding push force and mental tasks
(2022-12-26)Abstract: BACKGROUND:The effects of performing occupational tasks that demand physical and mental efforts in combined and simultaneous approaches are unknown, especially when pushing force is analyzed as a physical effort ... -
Análisis de carga mental y molestias musculoesqueléticas en conductores de transporte público en Ciudad Juárez, Chihuahua México
(2022-12-22)En Ciudad Juárez, México, el servicio de transporte público carece de condiciones seguras atribuidas al estado de las calles, a las pobres condiciones de trabajo de los conductores y malas condiciones de los camiones. Esta ... -
New Formulation to Synthetize Semiconductor Bi2S3 Thin Films Using Chemical Bath Deposition for Optoelectronic Applications
(2022-11-24)Abstract: Anisotropic materials possess direction dependent properties as a result of symmetry within their structure. Bismuth sulfide (Bi2S3) is an important semiconductor exhibiting anisotropy due to its crystalline ... -
A reliability analysis for electronic devices under an extension of exponentiated perks distribution
(2022-12-29)This paper presents a reliability analysis for electronic devices (ED) with bathtub curve-shaped failure times. An extension of the exponentiated perks distribution (EPD) is proposed for the analysis. The extension of ... -
Bioactividad y biocompatibilidad de compósitos de zirconia estabilizada con Y/ hidroxiapatita-Cu, Fosfato Tricálcico-Ag o Fosfato Tricálcico-Ga
(2022-06-28)The biological compatibility of bone and dental implants is limited, since it is placed until a long time after it has been implanted, due to its low resistance of infections attributed to a quick degradation of the implant ... -
O-carboxymethyl chitosan/gelatin/ silver-copper hydroxyapatite composite films with enhanced antibacterial and wound healing properties
(2022-08-21)Wound dressing composite films of O-carboxymethyl chitosan (OCMC) and gelatin were prepared and mixed with hydroxyapatite (HA) composited with Silver (Ag) and Copper (Cu) at different concentrations. The chemical, ... -
Evaluación físico-química de compositos madera-plástico para el diseño de productos
(2022-06-21)Los residuos de madera son tratados comúnmente como desecho y existe un problema para su disposición. Actualmente, las fibras son utilizadas para producir papel, material de construcción y bioplásticos; aunque han sido ... -
Design of a Neural Super-Twisting Controller to Emulate a Flywheel Energy Storage System
(2021-10-07)In this work, a neural super-twisting algorithm is applied to the design of a controller for a flywheel energy storage system (FESS) emulator. Emulation of the FESS is achieved through driving a Permanent Magnet Synchronous ... -
The effectiveness of published continuum constitutive laws to predict stress-assisted densification of powder compacts
(2022-10-10)Commonly used constitutive laws for crystalline and viscous materials have been compared to predict the densification behavior under hot-pressing and sinter-forging. Experimental results, from literature for one loading ... -
Composite scaffolds of chitosan/polycaprolactone functionalized with protein of Mytilus californiensis for bone tissue regeneration
(2022-03-30)Nowadays, the treatment for bone damage remains a significant challenge. As a result, the development of bioactive three-dimensional scaffolds for bone regeneration has become a key area of study within tissue engineering. ... -
Influence of Rare Earths Additions on the Microstructure and Hardness of Heat-treated Nanostructured Superalloy Inconel 718
(2022-07-22)The superalloy Inconel 718 is greatly employed in high-temperature applications due to its principal characteristics: high resistance to oxidation and excellent mechanical performance at elevated temperatures; hence, its ... -
Phase composition and its effect on the mechanical performance of an AlCoCrFeNiTi high-entropy alloy
(2022-03-09)The concept of High-Entropy Alloy (HEA) expanded the research field of advanced metallic materials for various applications, like the development of ultra-hardness ballistic protection materials for national security. ... -
Diseño de sistemas de control de velocidad en lazo cerrado aplicados al motor de corriente directa
(2022-04-08)Se presenta la metodología de diseño de sistemas de control de velocidad para un motor de corriente directa con magnetización constante. Se proponen tres tipos de controladores; el primero es un controlador proporcional-integral ...