La historia desconocida del lino vasco

Written for mechanics and technicians, this course explains the function, measurements, components, and instruments of combustion motors. Cylinder placement and construction, heat measurements, workings of dual engines, and starter systems are studied. Presented in a step-by-step format that features numerous drawings, each lesson begins with an objective and an introduction to the theory and concept.

Este texto esta escrito para un primer curso de diseno logico de sistemas digitales. El texto intenta conseguir un equilibrio entre la teoria y la aplicacion.

Underground structures must be able to support static overburden loads, as well as to accommodate additional deformations imposed by seismic motions. It seems well established that the most critical demand to the structure is caused by shear waves traveling perpendicular to the tunnel axis, which cause distortions of the cross section (ovaling for a circular tunnel, and racking for a rectangular tunnel) that result in axial forces (thrusts) and bending moments. While all this has been well-studied for structures placed in linear-elastic ground under drained loading conditions, there is little ...

En un año caracterizado por una perturbación sin precedentes debido a la pandemia de COVID-19, esta publicación registra las medidas que el Codex Alimentarius ha adoptado desde julio de 2019 (42.º período de sesiones de la CAC) hasta septiembre de 2020 (43.º período de sesiones de la CAC) para acercarse a la meta de lograralimentos inocuos y de calidad para todas las personas.En el transcurso del año, algunos comités del Codex pudieron reunirse según lo previsto para debatir actualizaciones de códigos de prácticas, normas y directrices alimentarias internacionales. Entre los que...