117 research outputs found

    Entre la violencia y la marginación: el establecimiento en Burgos de futuros mercaderes

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    El objeto de este trabajo es acercarnos al origen y a un primer establecimiento en Burgos de algunos mercaderes que a finales del siglo XV se convertirían en profesionales de éxito. Además de la fascinación por la gran ciudad y de la posibilidad de encontrar en ella nuevas formas de vida, concurren en los mismos circunstancias turbias, acontecimientos sospechosos y o ilícitos que acaso fuese mejor olvidar.The purpose of this article is to bring us close to the origins and initial establishment in Burgos of several merchants, who by the end of the XVth century would become successful professionals. In addition to the fascination for the large city, and the opportunity to fi nd there new ways of living, there are in their motivations concurrent troubling circumstances, and dubious or even illicit events which might be better forgotten

    The large-scale surface uplift in the Altiplano-Puna region of Bolivia: A parametric study of source characteristics and crustal rheology using finite element analysis

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    PublishedThis is the final version of the article. Available from the publisher via the DOI in this record.This paper focuses on the driving mechanism behind a 70 km wide region of ground uplift centered on Uturuncu volcano, in the Altiplano-Puna region of southern Bolivia. We present a series of forward models using finite element analysis to simultaneously test for first-order parameters that help constrain a viable model for the observed maximum line of sight uplift rate of 1–2 cm/yr between 1992 and 2006. Stresses from pressure sources with finite geometries are solved numerically, accounting for both homogeneous and heterogeneous mechanical rock properties in elastic and viscoelastic rheologies. Crustal heterogeneity is constrained by seismic velocity data that indicate the presence of a large low-velocity zone, the AltiplanoPuna magma body, at depths of ~17 km below the surface. A viscoelastic rheology is employed to account for time-dependent deformation and an inelastic crust. Comparing homogeneous and heterogeneous models demonstrates the significant impact of a mechanically weak, source-depth layer, which alters surface displacement patterns by buffering subsurface deformation. Elastic model results guide the source parameters tested in the viscoelastic models and demonstrate a range of possible causative source geometries. Our preferred model suggests that pressurization of a magma source extending upward from the Altiplano-Puna magma body is causing the observed surface uplift and alludes to a continued increase in this pressure to explain both the spatial and temporal patterns. We also demonstrate how a pressure-time function plays a first-order role in explaining the observed temporal deformation patternThis work was supported by the Natural Environmental Research Council (grant NE/G01843X/1), the European Union Framework Program 7 (grant 282759, “VUELCO”) and the Royal Society (University Research Fellowship). We thank Matthew Pritchard, Ciro Del Negro and editor James Tyburczy for their constructive review

    Almacenamiento subterrráneo de gas natural: Proyecto Castor

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    Material addicional de la ponència presentada al III Congrés Obert i Virtual Castelló 2020. Castelló de la Plana, 2011-201

    Operaciones comerciales del grupo familiar Castro a finales del siglo XV.

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    Sin resume

    La disgregación de una rica hacienda : el ocaso mercantil de los descendientes de Diego de Soria. ¿Un problema político?

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    Este trabajo trata de mostrar el rápido ocaso de una de las grandes familias burgalesas dedicadas al tráfico mercantil en el tránsito del siglo XV al XVI. Miembros de una tercera generación de mercaderes, tras superar serios problemas familiares e iniciar algunas operaciones comerciales, las abandonan viéndose envueltos en el «movimiento cumunero» que prendió en Castilla a principios del siglo XVI. Ello ocasionó, en parte, su ruina.It intends to show the fast decline of one of the outstanding families devoted to trade in Burgos within transition from 15th to 16th centuries. Being 3rd generation descendants of merchants they face and get over several family disputes; they decide to start some business to give them up later, getting involved in the «Movimiento Comunero» that ocurred in Castille in early 16th century. Partly, that led to bankrupcy

    Un manual de aritmética mercantil de Mosén Juan de Andrés

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    La difusión de aritméticas mercantiles por Europa Occidental en los últimos siglos de la Edad Media, debemos entenderlos como una lógica consecuencia de la expansión y desarrollo del comercio. La evolución de las técnicas mercantiles convirtió a esta disciplina en una herramienta de apoyo y de uso imprescindible para el mercader, quien llegó incluso a considerarla como razón clave del éxito empresarial. Esta alta consideración estimuló su aprendizaje y la difusión de manuales como el que aquí presentamos, elaborado ya en los primeros años del siglo XV
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