Publicaciones: Envíos recientes
Mostrando ítems 901-920 de 1870
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Pre-existing comorbidity, the highest risk factor for poor prognosis of COVID-19 among the Mexican population
(2021-04-09)The coronavirus disease 2019 (COVID-19) pandemic represents a challenge for public health and a high risk for patients with pre-existing comorbidity. As of July 20, 2020, the Case Fatality Rate (CFR) was 11.30% and the ... -
Mathematical modeling of a 3-CUP parallel mechanism using the Fermat point
(2021-03-18)This document is devoted to the analysis of the pose and velocity kinematics, as well as of the dynamics, for a parallel mechanism with three degrees of freedom, of the type known as 3-CUP. This mechanism is constituted ... -
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 ... -
Advances for the Development of In Vitro Immunosensors for Multiple Sclerosis Diagnosis
(2021-02-25)The diagnosis of diseases based on immunosensors have been objective of research in the last years, providing an improvement for a rapid detection, high sensitivity, precision, accuracy, specificity and resolution. Areas ... -
Unveiling quantum superparamagnetism by interacting monodomains in multiferroic Er-doped bismuth ferrate nanostructured particles
(2021-03-15)In the last few years, the quantum superparamagnetic (QSP) phenomenon has been reported in isolated ultrasmall nanoparticles. In this work, a QSP state and superparamagnetic (SP) state in nanostructured Er-doped BiFeO3 ... -
Dimensional Analysis under Linguistic Pythagorean Fuzzy Set
(2021-03-08)Dimensional analysis under linguistic Pythagorean fuzzy set (DA-LPFS) is a technique to handle qualitative (intangible) as well as the interactions between criteria, by combining dimensional analysis (DA) and Pythagorean ... -
Miedo al Covid, agotamiento y cinismo: su efecto en la intención de abandono universitario
(2021-03-15)La pandemia de Covid-19 ha impactado sin lugar a duda al sector educativo. Entre sus posibles consecuencias se encuentran la aparición y desarrollo del síndrome de Burnout y la intención de abandono por parte de estudiantes. ... -
Optimización del Recorrido de Desperdicios Sólidos Industriales Mediante Dispositivo de Medición y Comunicación
(2020-07-12)El presente proyecto tiene como objetivo el diseño de un control sistematizado sobre los contenedores de residuos en el ámbito industrial. Por lo cual se utilizaron diversas herramientas como el dispositivo físico que esta ... -
Análisis de absorción de turbosina en fibra de vidrio con rucubrimiento hidrofóbico
(2020-11-20)En la presente investigación se realizan estudios de absorción combustible Jet A1 en material compuesto de fibra de vidrio con resina 1) poliéster 2) vinil-éster y 3) epoxi con recubrimiento hidrofó- bico de SiO2 para ... -
Corrosión electroquímica en una superaleación base Cobalto
(2020-11-20)Las superaleaciones base cobalto se caracterizan por sus propiedades mecánicas elevadas a altas temperaturas. Por lo que la siguiente investigación muestra el análisis de corrosión electroquímica de una superaleación ... -
Geodesics of Hayward black hole surrounded by quintessence
(2021-02-26)Basing on the ideas used by Kiselev, we study the Hayward black hole surrounded by quintessence. The values critical of mass and the normalization factor are obtained. We also described the horizons and the extremal ... -
Determination of photocatalytic activity for the system: CdS chemical bath deposited thin films coated with TiO2 NPs
(2021-02-02)At this research, it is proof the degradation of methylene blue colorant, as photocatalytic activity, which result from the interaction between a CdS thin film surface, coated by TiO2 NPs, and the molecules of an aqueous ... -
Optical and microstructural characteristics of CuO thin films by sol gel process and introducing in non-enzymatic glucose biosensor applications
(2021-01-02)In this work, we reported the synthesis of copper oxide (CuO) thin films by sol-gel process assisted by spin coating technique at room temperature. Chemical characterization of CuO precursor solution was determined by ... -
Magnetoelastic transition and magnetocaloric effect in induction melted Fe100-xRhx bulk alloys with x = 50, 51
(2021-03-23)Magnetoelastic transitions (METs) in bulk in nearly equiatomic Fe-Rh alloys produced by arc melting may show poor reproducibility related to insufficient chemical homogeneity and presence of impurity phases in variable ... -
Assessment Urban Transport Service and Pythagorean Fuzzy Sets CODAS Method: A Case of Study of Ciudad Juárez. Sustainability
(2021-01-26)The purpose of this research article is to provide a comprehensive method of evaluation for public transportation. In this sense, this study considers transport lines that offer in Ciudad Juárez, Chihuahua. Hence, this ... -
Long‐term research catchments to investigate shrub encroachment in the Sonoran and Chihuahuan deserts: Santa Rita and Jornada experimental ranges
(2021-01-02)Woody plant encroachment is a global phenomenon whereby shrubs or trees replace grasses. The hydrological consequences of this ecological shift are of broad interest in ecohydrology, yet little is known of how plant and ... -
Predicción del éxito de proyectos de videojuegos en Kickstarter con aprendizaje automático
(2020-08-01)Kickstarter se ha convertido en el principal medio de financiamiento para proyectos de desarrolladores independientes. En esta plataforma se han subvencionado exitosamente alrededor de 2,500 proyectos de videojuegos. Aún ... -
Green synthesis of tin dioxide nanoparticles using Camellia sinensis and its application in photocatalytic degradation of textile dyes
(2021-01-07)SnO2 nanoparticles (NPs) were synthesized by a green route using different concentrations (1, 2 and 4%) of Camellia sinensis. The biosynthesized nanoparticles were characterized using attenuated total reflection infrared ... -
Elaboración de biopelículas de quitosano-almidón y nanopartículas de ZnO para empaques biomédicos.
(2021-03-31)Esta investigación se centra en el desarrollo y la caracterización de películas de polímeros a base de quitosán y almidón, reforzadas con nanopartículas de óxido de zinc obtenidas de baterías de desecho. Se sintetizaron ...