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Mostrando ítems 11-20 de 68
Artículo
Stability of insulating viscous jets under axial electric fields
(ScienceDirect, 1997-06)
The stability spectrum for a jet of perfectly insulating, viscous liquid subjected to a longitudinal electric field is obtained for axisymmetric perturbations. Both dielectric forces at the interface and viscous dissipation ...
Artículo
210Pb distribution in riverwaters and sediments near phosphate fertilizer factories
(Elsevier, 1996)
two fertilizer factories operate at the estuary formed by the Odiel and Tinto rivers in Southwestern Spain. In previous work the authors have shown that such operation enhances the natural radionuclide background of the ...
Ponencia
Numerical Simulation of Electric Currents through Insulating Materials
(IEEE, 1998)
A numerical simulation of electric currents is carried out through solid dielectrics from a model based on the local polarization. A degradation of material was considered to be produced from one of the electrodes and ...
Ponencia
3-D and 1-D dynamics of slender liquid jets: linear analysis with electric field and accuracy of 1-D models near the breakup
(IEEE Xplore, 1999-10)
In a previous paper [Phys. Fluids, vol. 6, 2676 (1994)], the authors derived four 1-D models (Lee, Cosserat, averaged, and parabolic models) for slender axisymmetric liquid jets from the Navier-Stokes equations. The error ...
Artículo
Radioactive impact of phosphate ore processing in a wet marshland in southwestern Spain
(Elsevier, 1997)
In this paper an extensive study of the presence of natural radionuclides in a marshland area located in the vicinity of a phosphoric acid production complex in southwestern Spain is presented. This marsh is a natural ...
Artículo
One‐dimensional models for slender axisymmetric viscous liquid bridges
(American Institute of Physics, 1996-11)
A set of one‐dimensional models, previously derived for liquid jets, is generalized to viscous liquid bridges by applying suitably modified boundary conditions at the anchoring disks. A linear analysis for small‐amplitude ...
Artículo
Three-dimensional modelling of the tide-induced dispersion of radionuclides in the sea
(Elsevier, 1998)
A three-dimensional marine dispersion model for radionuclides has been developed. ¹he model solves the three-dimensional hydrodynamic equations and, simultaneously, the three-dimensional advective—diffusive dispersion ...
Artículo
Soil to plant transfer of 226 Ra in a marsh area: Modelling application
(Elsevier, 1998)
¹he Odiel river forms an estuarine system which surrounds a large marsh area. A phosphate fertilizer processing complex releases its wastes into the estuary. ¹he presence of 226Ra in soils and plants (Spartina Densiflora) ...
Libro
Actividades para aprender Electrostática. Fichas didácticas
(Concepción Venero Goñi, 1997)
Ponencia
VRML: El laboratorio virtual como alternativa económica al laboratorio real
(Escuela Politécnica Superior de la Rábida, 1999)
La formación de un Ingeniero Técnico pasa ineludiblemente por dos fases de estudio: El conocimiento teórico y el desarrollo de actividades prácticas. Si bien el conocimiento teórico queda en mayor o peor medida cubierto ...