Artículos Open Access: Envíos recientes
Mostrando ítems 261-280 de 395
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Biotype, antibiotype, genotype and toxin gene tsst-1 in Staphylococcus aureus isolated from Cotija cheese in the state of Guerrero, México
(African Journal of Microbiology Research, 2014-07)Milk and dairy products such as Cotija cheese are susceptible to contamination by Staphylococcus aureus. Some isolates of these bacteria carry the genes for enterotoxins and also the toxic shock syndrome toxin (TSST-1), ... -
Gold, silver, and copper phytoextraction by helianthus annuus l. (sunflower) grown on mine tailings amended with plant growth regulators and cyanide
(Sustainable Industrial Processing Summit/Shechtman International Symposium, 2014-01)Phytoextraction has been suggested as aviable technique for gold recovery from some areas of mine tailings and mineralized soils. Plant Growth Regulators have been used due to their potential to improve rates of metal ... -
Klebsiella variicola and Klebsiella quasipneumoniae genomic analysis provides insights into their capacity to adapt to clinical and plant settings
(Salud Pública de México, 2017-02-24)Objective. To compare the genetic determinants involved in plant colonization or virulence in the reported genomes of K. variicola, K. quasipneumoniae and K. pneumoniae. Materials and methods. In silico comparisons and ... -
The Context Socio-Environmental an Opportunity to Teach Public Health Environmental Learning Scenarios In Metztitlán Hidalgo, México
(Journal of Agriculture and Environmental Sciences, 2017-12)Metztitlán Hidalgo, Mexico is a population that is characterized by productive labor camp food and also has temporary irrigation systems, a situation that allows you to add such statewide percentage of food production ... -
Mathematical Properties of the Hyperbolicity of Circulant Networks
(Hindawi Publishing Corporation Advances in Mathematical Physics, 2015-07-24)The first works on Gromov hyperbolic spaces deal with finitely generated groups. Initially, Gromov spaces were applied to the study of automatic groups in the science of computation; indeed, hyperbolic groups are strongly ... -
Bayesian analysis for a fractional population growth model
(Hindawi Publishing Corporation Journal of Applied Mathematics, 2017-01-23)We implement the Bayesian statistical inversion theory to obtain the solution for an inverse problem of growth data, using a fractional population growth model. We estimate the parameters in the model and we make a comparison ... -
Generating Function: Multiple Orthogonal Polynomials
(Applied Mathematical Sciences, 2016-03-09)At present, interest in the study of multiple orthogonal polynomials has increased due to the development of simultaneous rational approximation of functions and the link between the two theories. Orthogonal polynomials ... -
El contraejemplo en la elaboración de la definición de función convexa por estudiantes universitarios
(Información tecnológica, 2019-02)In this paper the results of an investigation that aimed to identify the role played by the counterexample in the elaboration of mathematical definitions are reported. In particular, the case of the convex function; in a ... -
Methodology based on problem solving in the treatment of the concept of limit to infinity
(International Journal of Research in Education Methodology, 2014-01)In this research, a methodological strategy it is raised for the assimilation of the concept of infinity limit in the teaching and learning of calculus at the University level. The strategy considers the contributions and ... -
A Basic Backward Bifurcation Model in Epidemiology
(Applied Mathematical Sciences, 2013-06-11)The existence of a backward bifurcation has important consequences in the strategies and control policies designed to eradicate or control an infectious disease because the policies of public health when this phenomenon ... -
Fractional stochastic heat equation on the Half-Line
(Applied Mathematical Sciences, 2016-11-12)In this paper, we consider an initial-boundary value problem for a stochastic non-linear heat equation with Riemann-Liouville spacefractional derivative and white noise on the half-line. We construct the integral representation ... -
Little environmental dimension, gives reason to an urgent need and sustainable proposal of curricular inclusion
(IJRDO-Journal of Educational Research, 2017-10)The environmental crisis in the world, has promoted the integration of the environmental dimension in education, in this area, are located universities. Resolutions of international summits such as the one organized by the ... -
Captura de carbono por una fachada vegetada
(Acta Universitaria, 2017-09-22)Vegetation in large land area plays the role of a natural carbon sink which eliminates high concentrations of greenhouse gases; for this reason, it is necessary to maintain the balance between the built and vegetated ... -
Forest structure of the mangrove zone of the Coyuca de Benítez lagoon, Guerrero state
(Revista Mexicana de Ciencias Forestales, 2017-12-15)Mangroves are a forest resource of great importance in the wetlands, by its diversity and timber structure, as for the ecological values, socio-economic and environmental benefits that represent. Its composition depends ... -
Stochastic black-scholes equation with time-fractional derivative on the half-line
(International Journal of Pure and Applied Mathematics, 2016-01)We investigate the pricing of options using a modified Black-Scholes equation with a time-fractional derivative and additive white noise on the half-line. We construct the Green function for the initial-boundary value ... -
Intoxication and risks derived from exposure to pesticides in farmers Metztitlan Hidalgo, Mexico
(KASMERA, 2015-01)The aim of the investigation consists on describing the toxic impact of pesticides, as well as analyzing farmers' awareness and knowledge about their uses and risks by conducting a discourse analysis and community intervention ... -
The hyperbolicity constant of infinite circulant graphs
(Open Mathematics, 2017-03-30)The space X is hyperbolic.in the Gromov sense/ if any side of T is contained in a neighborhood of the union of the two other sides, for every geodesic triangle T in X. Deciding whether or not a graph is hyperbolic is usually ... -
Propiedades ópticas de enredaderas en fachadas vegetadas
(Revista Iberoamericana de Ciencias, 2016-10)In this work the optical properties of the vines Pentalinon luteum and Clitoria ternatea native of tropical America whose qualities are reported as: adaptability to hostile environment, low water requirement, broad foliage ... -
On the total k-domination in graphs
(Discussiones Mathematicae, 2018-01)Let G = (V, E) be a graph; a set S V is a total k-domination number (G) is the minimum cardinality among all total k-dominating sets. In this paper we obtain several tight bounds for the total k-domination number of a ... -
Mathematical aspects on the harmonic index
(International Journal of Mathematical Analysis, 2017-01)The aim of this paper is to obtain new inequalities involving the harmonic index H(G) to other well-known topological indices. Moreover, we show that the computation of the harmonic index is reduced to the computation of ...