Results 21 to 30 of about 928,451 (218)
Analysis of a stochastic distributed delay epidemic model with relapse and Gamma distribution kernel [PDF]
, 2020 In this work, we investigate a stochastic epidemic model with relapse and distributed delay. First, we prove that our model possesses and unique global positive solution.
Caraballo Garrido, Tomás +4 more
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Revista de Metalurgia, 2010 La embutibilidad de un material se establece en función de indicadores normalizados, como son los índices de anisotropía y de acritud, que suelen determinarse en condiciones diferentes a las de conformado.
J. Coello +4 more
doaj +1 more source
Polymeric foams as the matrix of voltammetric sensors for the detection of catechol, hydroquinone, and their mixtures [PDF]
, 2018 Producción CientíficaPorous electrodes based on polymethylmethacrylate and graphite foams (PMMA_G_F) have been developed and characterized. Such devices have been successfully used as voltammetric sensors to analyze catechol, hydroquinone, and their ...
Fernández Blanco, C. +4 more
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Pérdida de suelo por erosión hídrica en la cuenca del lago de Chapala, Michoacán, México
Tecnología y ciencias del agua, 2017 Silva-García, J. T., Cruz-Cárdenas, G., Ochoa-Estrada, S., Estrada-Godoy, F., Nava-Velázquez, J., & Álvarez-Bernal, D. (noviembre-diciembre, 2017). Pérdida de suelo por erosión hídrica en la cuenca del lago de Chapala, Michoacán, México.
José Teodoro Silva-García +5 more
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Archivos Latinoamericanos de Nutrición, 2022 Introduction: The use of vegetable proteins as ingredients in food systems is based on their functional properties. The water and oil holding capacity, foaming, and emulsifying capacity/stability, and antioxidant assay of the protein fractions - albumins,
Beatriz Noyola-Altamirano +5 more
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Electrochemical sensors modified with combinations of sulfur containing phthalocyanines and capped gold nanoparticles: A study of the influence of the nature of the interaction between sensing materials [PDF]
, 2019 Producción CientíficaVoltametric sensors formed by the combination of a sulfur-substituted zinc phthalocyanine (ZnPcRS) and gold nanoparticles capped with tetraoctylammonium bromide (AuNPtOcBr) have been developed.
García Cabezón, Ana Cristina +7 more
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Revista de Metalurgia, 2005 En este trabajo se estudia la influencia que el acabado superficial del acero X40CrMoV5 1 tiene sobre la capa blanca o de combinación formada en el proceso de la nitrocarburación gaseosa. Se consideran acabados superficiales en el rango de 0,02 a 1,50 μm
V. Miguel +4 more
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Dairy, 2021 Dairy systems based on grass and forages are widely spread throughout the European Atlantic Arc and they have an influence on milk quality. Likewise, legumes are a key element in the farms to improve cows’ diet and farm feed self-sufficiency.
Senén De La Torre-Santos +5 more
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Uniqueness of limit cycles for quadratic vector fields [PDF]
, 2019 Producción CientíficaThis article deals with the study of the number of limit cycles surrounding a critical point of a quadratic planar vector field, which, in normal form, can be written as x ′ = a1x − y − a3x 2 + (2a2 + a5)xy+a6y 2 , y ′ = x ...
Bravo, José Luis +3 more
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El enfoque de paisaje como base para la política forestal. El caso de México
Economía, Sociedad y Territorio, 2022 El enfoque del paisaje representa una alternativa relevante para el diseño de políticas de manejo sustentable de los recursos naturales, particularmente para el sector forestal.
María Elena Serrano Flores +3 more
doaj +1 more source