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Mostrando ítems 1-10 de 96
Artículo
Bifurcation from zero of a complete trajectory for non-autonomous logistic PDEs
(World Scientific Publishing, 2005-08)
In this paper we extend the well-known bifurcation theory for autonomous logistic equations to the non-autonomous equation ut − ∆u = λu − b(t)u 2 with b(t) ∈ [b0, B0], 0 < b0 < B0 < 2b0. In particular, we prove the ...
Capítulo de Libro
Ceremonias y prácticas de los indígenas americanos en los procesos bélicos
(Universidad Internacional de Andalucía, 2008)
Artículo
Proline content of sugar beet storage roots: Response to water deficit and nitrogen fertilization at field conditions
(Elsevier, 2007-06)
Drought stress is one of the major factors causing profit loss of the sugar beet crop. The accumulation of proline, an indicator of water stress, has been reported in response to osmotic and salt stress in sugar beet leaves, ...
Artículo
The symmetric action on secondary homotopy groups
(The Belgian Mathematical Society, 2008-11)
We show that the symmetric track groups Sym(n), which are extensions of the symmetric groups Sym(n) associated to the second Stiefel-Whitney class, act as crossed modules on the secondary homotopy groups of a pointed space.
Ponencia
Sensor de humedad del suelo de bajo coste para control de regadíos
(2001)
This paper presents a low-cost system to measure soil humidity for application in irrigation control. It is based in the simultaneous measurement of the real and imaginary parts of the impedance of a volume of soil ...
Artículo
Analysis of polarized 16 O ( → e , e ′ → p ) observables within the relativistic distorted wave impulse approximation
(American Physical Society, 2004)
Recoil nucleon transferred polarization observables in coincidence quasielastic electron scattering are studied within the relativistic distorted wave impulse approximation. Results for response functions and polarization ...
Artículo
On the cycling operation in braid groups
(Elsevier, 2008-09-06)
The cycling operation is a special kind of conjugation that can be applied to elements in Artin’s braid groups, in order to reduce their length. It is a key ingredient of the usual solutions to the conjugacy problem in ...
Artículo
Ball Milling of Fe83Zr6B10Cu1 Amorphous Alloy Containing Quenched in Crystals
(Elsevier, 2007)
A Fe83B10Zr6Cu1 melt-spun amorphous alloy has been ball milled in the presence of partially crystalline ribbon pieces, in order to speed up its mechanical nanocrystallization process. Microstructure and magnetic properties ...
Artículo
The 1-type of a Waldhausen K-theory spectrum
(Elsevier, 2007-12-01)
We give a small functorial algebraic model for the 2-stage Postnikov section of the K-theory spectrum of a Waldhausen category and use our presentation to describe the multiplicative structure with respect to biexact functors.
Ponencia
Sistema Tiempo Real para el Control de una Plataforma Giroestabilizada
(CEA - Comité Español de Automática, 2000)