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Existence of nonnegative solutions for singular elliptic problems
(2016)
We prove the existence of nonnegative nontrivial weak solutions to the problem −∆u = au−αχ{u>0} − bup in Ω, u = 0 on ∂Ω, where Ω is a bounded domain in Rn. A sufficient condition for the existence of a continuous and ...
Empoderamiento : una caracterización al interior de la educación matemáticaEmpowerment : a characterization within mathematics education
(2016)
El presente trabajo pone en juego un proceso analítico-constructivo con el fin de realizar una caracterización del empoderamiento para el ámbito de la educación matemática. Para llegar a tal caracterización se delimitan ...
Influence of the incorporation of fibers in biscuit dough on proton mobility characterized by time domain NMR
(2016)
The effect of fiber addition on the distribution and mobility of protons in biscuits is studied by using low resolution time domain Nuclear Magnetic Resonance (TD-NMR). The proportion of flour is reduced in order to ...
Multi-characterization of electron-induced defects in highly oriented pyrolytic graphite
(2016)
Engineering the properties of materials through defects is at the forefront of research in Materials Science. Here, we investigate the defects produced on highly oriented pyrolytic graphite (HOPG) samples irradiated with ...
Aportes a la formación del profesorado constructivista : resultados en dos países
(2016)
La investigación aborda la influencia que tiene la participación en la investigación educativa en la calidad de la enseñanza de docentes de ciencias experimentales de Argentina y España. Se han utilizado tres vías de acceso ...
Center of mass and spin for isolated sources of gravitational radiation
(2016)
We define the center of mass and spin of an isolated system in general relativity. The resulting relationships between these variables and the total linear and angular momentum of the gravitational system are remarkably ...
Enhancement of dissolution rate of furosemide using a solid dispersion with D-glucosamine HCl
(2016)
Furosemide is a potent high ceiling (loop) diuretic mainly used in the treatment of edematous states associated with cardiac, renal, and hepatic failure, and the treatment of hypertension. Furosemide has been classified ...
Dynamic heterogeneity in the monoclinic phase of CCl4
(2016)
Carbon tetrachloride (CCl4) is one of the simplest compounds having a translationally stable monoclinic phase while exhibiting a rich rotational dynamics below 226 K. Recent nuclear quadrupolar resonance (NQR) experiments ...
Maximal totally geodesic submanifolds and index of symmetric spaces
(2016)
Let M be an irreducible Riemannian symmetric space. The index i(M ) of M is the minimal codimension of a totally geodesic submanifold of M. In [1] we proved that i(M ) is bounded from below by the rank rk(M) of M, that is, ...
Propiedades de un hilorama clásico
(2016)
Un hilorama es una figura formada mediante hilos o cuerdas que unen dos segmentos y se van cruzando entre sí. El efecto visual de estas figuras es llamativo y se utiliza en el arte, el diseño y la arquitectura. En este ...