Nota a la Farmacopea Española IX edición: Antipirina

Se estudia la monografía «Antipyrina» de la F. E. IX comparativamente con el existente en las demás farmacopeas y se proponen diversas modificaciones a la misma basadas en datos experimentales.The monograph "Antipyrine" spanish pharmacopoeia IX is studied comparatively with that in other pharmacopoeia and various modifications to it based on experimental data is proposed.Cátedra de Farmacia Galénica y Técnica Profesional y Legislación (Prof. Dr. José M. Suñé Arbussá

Un Juego de ordenador para el aprendizaje de la configuración de los componentes de red

Los equipos de red avanzados son relativamente caros y el acceso a ellos está generalmente limitado a las sesiones planificadas en los laboratorios disponibles de la universidad. Por ello, es importante sacar el máximo partido del tiempo asignado y reducir la dedicación de los estudiantes a actividades que pueden realizar fuera de las sesiones de laboratorio. La familiarización con el conjunto de comandos de configuración básicos es una de estas actividades. Con este objetivo, hemos desarrollado un juego de ordenador que permite a los estudiantes practicar y aprender éstas en un entorno motivador y agradable. El juego se ha diseñado con reglas sencillas de aprender y se han combinado situaciones de aprendizaje cooperativas y competitivas.Peer Reviewe

A spatial algorithm to reduce phase wraps from two dimensional signals in fringe projection profilometry

© 2015 Elsevier Ltd. All rights reserved. In this paper, we present a novel algorithm to reduce the number of phase wraps in two dimensional signals in fringe projection profilometry. The technique operates in the spatial domain, and achieves a significant computational saving with regard to existing methods based on frequency shifting. The method works by estimating the modes of the first differences distribution in each axial direction. These are used to generate a tilted plane, which is subtracted from the entire phase map. Finally, the result is re-wrapped to obtain a phase map with fewer wraps. The method may be able to completely eliminate the phase wraps in many cases, or can achieve a significant phase wrap reduction that helps the subsequent unwrapping of the signal. The algorithm has been exhaustively tested across a large number of real and simulated signals, showing similar results compared to approaches operating in the frequency domain, but at significantly lower running times

Wide range group delay tuning in lossy fiber ring resonators

22nd International Conference on Optical Fiber Sensors, OFS 2012, Beijing, China, 15-19 Oct. 2012We demonstrate theoretically and experimentally that a wide-range tuning of group delay values can be achieved in a\ud lossy fiber ring resonator. The tuning mechanism relies simply on varying the loss/coupling ratio in the resonator. This\ud simple structure may be used advantageously in different regimes for many sensing configurations, both for achieving\ud extremely high sensitivity enhancements (by working close to critical coupling, where the group index becomes\ud extremely large) or suppression of undesired refractive index effects (e.g. Kerr effect), by working in the under-coupled\ud regime

Modelado de estudiante en resolución de problemas a través de la dinámica de sistemas

Nuestra intención es utilizar un sistema tutorial inteligente (Arnau, Arevalillo-Herráez, González-Calero, 2014) para realizar la recogida de datos ligados a la destreza inicial del estudiante como resolutor de problemas aritméticos y poder construir un modelo de estudiante siguiendo la Teoría General de Sistemas. Esta teoría propone el uso de metodologías de carácter transdisciplinar que permitan construir modelos matemáticos con los que resolver problemas en el ámbito de los sistemas dinámicos complejos

Estudio empírico sobre la influencia de recursos heurísticos en la resolución de problemas de probabilidad condicionada L0 y L2

Se ha constatado la dificultad de los estudiantes a la hora de resolver problemas de probabilidad condicionada (Cañadas et al., 2011). En general, la complejidad de estos problemas es debida a varios factores: el formato y el orden en el que se presentan los datos, el contexto en el que se plantea el problema, el lenguaje utilizado para expresar los datos condicionales o las herramientas utilizadas en el proceso de resolución. En nuestro estudio nos centraremos en el uso y la influencia de recursos heurísticos, como tablas de contingencia o diagramas de árbol, durante la resolución de un problema de probabilidad condicionada

Turning a low Q fiber resonator into a high-sensitivity displacement sensor using slow light concepts

High-Q resonators have been widely used for sensing purposes. High Q factors normally lead to sharp spectral peaks which accordingly provide a strong sensitivity in spectral interrogation methods. In this work we employ a low-Q ring resonator to develop a high sensitivity sub-micrometric resolution displacement sensor. We use the slow-light effects occurring close to the critical coupling regime to achieve high sensitivity in the device. By tuning the losses in the cavity close to the critical coupling, extremely high group delay variations can be achieved, which in turn introduce strong enhancements of the absorption of the structure. We first validate the concept using an Optical Vector Analyzer (OVA) and then we propose a simple functional scheme for achieving a low-cost interrogation of this kind of sensors.European CommissionMinisterio de Ciencia e InnovaciónComunidad de Madri

Fiber sensors for the high-speed railway environment

Specialty Optical Fibers 2014, Barcelona, Spain, 27–31 July 2014We review some recent work on fiber-optic sensors for the high-speed railway environment. In particular, we show convenient fiber-optic solutions for rail and wheel monitoring, perimeter security and catenary protection in changeover section

A high-resolution fuel type mapping procedure based on satellite imagery and neural networks: Updating fuel maps for wildfire simulators

A major limitation in the simulation of forest fires involves the proper characterization of the surface vegetation over the study area, based on land cover maps. Unfortunately, these maps may be outdated, with areas where vegetation is either not documented or inaccurately portrayed. These limitations may impair the predictions of wildfire simulators or the design of risk maps and prevention plans. This study proposes a complete procedure for fuel type classification using satellite imagery and fully-connected neural networks. Specifically, our work is based on pixel- based processing cells, generating high-resolution maps. The field study is located in the Northeast of Castilla y Leo ́n, a central Spanish region, and the Rothermel criteria was followed for the fuel classification. The results record an accuracy of close to 78% on the test sets for the two studied settings, improving on the results reported in previous studies and ratifying the robustness of our approach. Additionally, the confusion matrix analysis and the per-class statistics computed confirm good reliability for all fuel types in a cross-validation framework. The predicted maps can be used on wildfire simulators through GIS tools.BERC 2022–2025 PID2019-107685RB-I00 European Regional Development Fund (ERDF) and the Department of Education of the regional government, the Junta of Castilla y Leo ́n, (Grant contract SA089P20); the European Union’s Horizon 2020 – Research and Innovation Framework Program under Grant agreement ID 101036926

Microestructura del esmalte de los incisivos de roedores (Mammalia, Rodentia)

Abstract not availabl