Existence of radial stationary solutions for a system in combustion theory

In this paper, we construct radially symmetric solutions of a nonlinear noncooperative elliptic system derived from a model for flame balls with radiation losses. This model is based on a one step kinetic reaction and our system is obtained by approximating the standard Arrehnius law by an ignition nonlinearity, and by simplifying the term that models radiation. We prove the existence of 2 solutions using degree theory

Las doleritas neoproterozoicas de las ventanas de Agadir Melloul y del Adrar Izazen (Anti-Atlas Central, Marruecos). Restos de una distension pre-panafricana

Two swarms of diabasic dykes wich différents directions NE-SW and NW-SE cut the socle of Agadir Melloul and the Adrar Izazen neoprotero/.oic windows. This rocks show a hidrothermal transformation simultanely wich Pahafricàn deformation but the primary mineralógicaI composition preserved are formed by: plagioclase, augite, ilmenite and micropegmatite textures wich hornblende and biotite ocasionally. Their chemical composition are tholeitic and transitional basalts in the two directions respectively mentioned. This magmatism have an anorogenic continental character and it is related wich the extensif pre-panafrican phase that involved to northern edge of western african crato

In situ Raman microscopy study of ceramic fibres in ceramic matrix composites

Communication to : 4th international conference on composites engineering - ICCE/4, Big Island, Hawaii (USA), July 6-11, 1997SIGLEAvailable from INIST (FR), Document Supply Service, under shelf-number : 22419, issue : a.1997 n.217 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc