Universidad Autónoma de Zacatecas (México): últimos ingresos
Mostrando ítems 2641-2660 de 3065
-
Extraction of saponins from leaves of agaves
(Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco A.C., 2014-12-22)The agave or maguey is endemic to America and Mexico is the place where you will find the largest number of species of agave. In Zacatecas, Mexico, in the south and southeast regions of the state grown Agave tequilana ... -
Hiperacumulación inducida de oro, plata y metales pesados en Brassica rapa cultivada en desechos de mina.
(Universidad Autónoma de Guerrero, 2014-12)Con el objetivo de inducir la hiperacumulación de metales pesados en las plantas de la especie Brassica Rapa, crecida en un sustrato de desecho de mina, varios tratamientos fueron aplicados. Tres agentes quelantes: ácido ... -
Preliminary human health risk assessment of arsenic and fluoride in tap water from Zacatecas, México
(Springer, 2016-07-21)Zacatecas state is located in the central area of Mexico, where the underground water contains elevated quantities of natural arsenic and fluoride. In order to estimate health risk associated with human exposure to ... -
Presencia de Helmintos en el Patro Triguero (Anas platyrhynchos diazi) del altiplano zacatecano, México
(El Colegio de Posgraduados, 2010-11-16)Las aves acuáticas, como el pato triguero (Anas platyrhynchos diazi), son portadoras de parásitos que pueden afectar a las poblaciones de diferentes especies distribuidas en el altiplano zacatecano, México. El presente ... -
Conserved versatile master regulators in signalling pathways in response to stress in plants
(Oxford University Press, 2013-08-11)En las plantas, desde las primeras especies terrestres hasta las complejas gimnospermas y angiospermas de la actualidad, las condiciones ambientales han forzado el desarrollo de estrategias moleculares para superar obstáculos ... -
Contexto de docentes investigadores en la Universidad Autónoma de Zacatecas miembros de SNI y PRODEP
(Centro de Investigación y Desarrollo de Pequeña y Mediana Empresa y Micro Empresa, 2017)El presente trabajo se desarrolló con el objetivo de identificar los elementos que configuran el contexto de los docentes investigadores de la Universidad Autónoma de Zacatecas (UAZ) y la medida en que esos elementos ... -
The Theoretical Rationale of the Existence of Electric and Magnetic Fields Spreading Instantaneously
(Progress In Electromagnetics Research, 2012-08)In this note, we show that the use of the Helmholtz vector decomposition theorem leads to the theoretical rationale of the existence of solenoidal electric and magnetic ¯elds which can spread instantaneously. -
Is the free electromagnetic field a consequence of Maxwell´s equations or a postulate?
(Springer, 1998-12)It is generally accepted that solutions of so called "free" Maxwell equations for Q = 0 (null charge density at every point of the whole space) describe a free electromagnetic field for which flux lines neither begin ... -
Experimental test on the applicability of the standard retardation condition to bound magnetic fields
(American Institute of Physics, 2007-01-31)We start with the fact that the actual consensus on the empirical verification of the standard retardation condition does not take into account the complex structure of the whole electromagnetic field in the near zone. ... -
Reply to ‘‘Comment on ‘Action at a distance as a full-value solution of Maxwell equations: The basis and application of the separated-potentials method’ ’’
(American Physical Society, 1998-03)The preceding Comment criticized the necessity of introducing an electrodynamics dualism concept based on a novel complete solution of Maxwell’s equations proposed in our previous paper @Phys. Rev. E 53, 5373 ~1996!#. ... -
On the Existence of Non-Intersecting Straight Lines on the Plane
(Scientific Research Publishing, 2018-04)In this brief note, we adduce the logical rationale that if at least one infinite straight line non-intersecting with the given straight line passes through a given point not lying on a given straight line, then it must be unique. -
Action at a distance as a full-value solution of Maxwell equations: The basis and application of the separated-potentials method
(American Physical Society, 1996-05)The inadequacy of Lie´nard-Wiechert potentials is demonstrated as one of the examples related to the inconsistency of the conventional classical electrodynamics. The insufficiency of the Faraday-Maxwell concept to describe ... -
Valoración del agua de riego agrícola en el valle de Zamora, Michoacán, México
(Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias México, 2017-05)La falta de agua constituye uno de los principales problemas de la humanidad, por lo que se requiere gestionar el recurso con esquemas de valores de existencia y legado; es decir, con valor de no uso. La eficiencia en ... -
Percepción de los trabajadores del conocimiento de la Universidad Autónoma de San Luís Potosí sobre las condiciones del contexto laboral que generan el PRODEP y el SNI
(Universidad Autónoma de Zacatecas, 2017-12)Pese a la creciente importancia que para la sociedad mexicana tienen los profesores que laboran en sus universidades públicas, aún persiste una enorme ignorancia sobre ellos: quiénes son, qué hacen, cuáles son sus percepciones ... -
Necessity of simultaneous co-existence of instantaneous and retarded interactions in classical electrodynamics
(International Journal of Modern Physics A, 1999-09-01)We consider the electromagnetic field of a charge moving with a constant acceleration along an axis. We find that this field obtained from the Li´enard–Wiechert potentials does not satisfy Maxwell equations if one considers ... -
Megaminería y 7 maldades del espojo territorial
(Editorial Académica Española, 2018)El objetivo de esta investigación consistió en diseñar un modelo explicativo sobre lo que ocurre con la megaminería, partiendo de analizar los procesos de despojo territorial en Zacatecas, México en el contexto internacional ... -
The rationale of the possible existence of solenoidal electric and magnetic fields spreading without the standard retardation condition
(Association of Engineering and Innovative Technology, 2013-11)In this brief note we show that the use of the Helmholtz vector decomposition theorem leads to the theoretical rationale of the possible existence of solenoidal electric and magnetic fields which can spread instantaneously. -
The Mathematical Justification of a Possible Wave Nature of the Time Flow of Kozyrev
(American Research Institute for Policy Development, 2014-09)In this brief note we do not prove or disprove the existence of the so-called time flow in the conception of time offered by N.A. Kozyrev, here we merely give the mathematical justification of the presumable wave nature ... -
Relativistic analysis of application of Helmholtz theorem to classical electrodynamics
(Council for Innovative Research, 2014-12)In this work we discuss the relationship between the instantaneous-action-at-a-distance solutions of Maxwell‟s equations obtained using Helmholtz theorem and the Lorentz‟s invariant solutions of the same equations obtained ...