Classification of some nilpotent class of leibniz superalgebras

The aim of this work is to present the description of Leibniz superalgebras up to isomorphism with characteristic sequence (n|m − 1, 1) and nilindex n + m

Volcanismo jurásico del sector valenciano de la Cordillera Ibérica. Distribución y trama estructural

En el sector valenciano de la Cordillera Ibérica se desarrolla durante elJurásico un volcanismo fundamentalmente piroclástico, con emisiones basálticas y traquibasálticas en el Pliensbachiense, Toarciense y Bajociense. La cartografía de los afloramientos permite definir dos alineaciones NW-SE (franja de Caudiel, alineación piroclástica de Alcublas), asi como un área más amplia de traza general NE-SW en las sierras de Javalambre y Camarena. Tal disposicion regional sugiere que las manifesiaciones volcánicas ocurren según dos direcciones principales de fracturación tardihercínica (NW-SE y NE-SW) y aún posiblemente a favor de los puntos de intersección de ambos sistemas estructurales. La dirección NW-SE ejerce el máximo control de la actividad volcánica jurásica, al igual que previamente durante el Triásico superior (línea ofítica de Altura)

El proverbio francés en el siglo XIX.

Sin resume

Experiències mediambientals a l'EPSEM. Implantació d'un EMAS

Aquesta ponència presenta les experiències mediambientals que s’han portat a terme al llarg del temps a l’Escola Politècnica Superior d’Enginyeria de Manresa (EPSEM). Es posa especial èmfasi en la implantació d’un Sistema de Gestió Ambiental (EMAS), que és un projecte que s’està desenvolupant actualment.Peer Reviewe

Analytical modelling of metallic circular plates subjected to impulsive loads

14 pages, 15 figures.This paper presents an analytical approach to the dynamic response of metallic circular plates subjected to impulsive loads. It is based on the plate energy balance equation and assumes that the plate material behaves viscoplastically. The proposed method permits a consideration of the influence of the different terms of the kinetic energy and the plastic work of the plate. A yield criterion is proposed, which involves the coupled effect of the radial and circumferential internal force resultants. By applying the normality rule, the distribution of the bending moments and membrane forces inside the plate are computed. For model validation, its analytical predictions are compared with experimental results.The authors are indebted to the Comunidad Autónoma de Madrid for the financial support of this work (project 07N/0004/1998).Publicad

An engineering model on penetration of eroding rods into ceramic/polymer composite

6 pages, 3 figures.-- Issue title: "EURODYMAT 2003 - 7th International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading" (Porto, Portugal, Sep 8-10, 2003).A new material composed of a polymer matrix loaded with ceramic partiales, at low cost and of higher ballistic efficiency than that of the metallic materials used for armouring applications, is proposed as an alternative to the ceramic tiles traditionally adopted for mixed panels. An engineering model was developed to simulate normal impacts of projectiles against this particulate composite backed by a metallic plate. The equation governing the erosion of projectile and ceramic is that proposed by Tate and Alekseevskii, modifie to consider a moving target. For the volume of particulate composite between the projectile and the metallic plate, an equation was derived to include a momentum balance. For the metallic plate, an energy balance equation was used. When the projectile has eliminated the ceramic/polymer composite and meets the plate, the model of Awerbuch & Bodner is adopted, again modifie to consider a moving target. ln this way, the impact process is described by a set of non-linear differential equations, to be integrated in time. The model was validated with experimental results and with full numerical simulations and showed agreement with both of them.The authors are indebted to the Comunidad Autónoma de Madrid (Project 07N/0004/1998) for the financial support of this work.Publicad