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Universidad Politécnica de Madrid

3 ARTICLES PUBLISHED IN JoVE

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Engineering

Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass (ADG) Fresnel Lens for Concentrating Photovoltaics
Guido Vallerotto 1, Marta Victoria 1, Stephen Askins 1, Ignacio Antón 1, Gabriel Sala 1, Rebeca Herrero 1, César Domínguez 1
1Instituto de Energía Solar, Universidad Politécnica de Madrid

The achromatic doublet on glass (ADG) Fresnel lens makes use of two materials with differing dispersion to reduce chromatic aberration and increase attainable concentration. In this paper, a protocol for the complete characterization of the ADG Fresnel lens is presented.

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Environment

Laboratory and Field Protocol for Estimating Sheet Erosion Rates from Dendrogeomorphology
Jose Maria Bodoque 1, Juan Antonio Ballesteros-Cánovas 2,3, Juan Manuel Rubiales 4,5, Markus Stoffel 2,3
1University of Castilla-La Mancha (UCLM), 2Department of Earth Sciences, University of Geneva, 3Institute for Environmental Sciences, University of Geneva, 4Departamento de Sistemas y Recursos Naturales, Universidad Politécnica de Madrid, 5Departamento de Biodiversidad, Ecología y Evolución, Universidad Complutense de Madrid

Characterizing erosion from dendrogeomorphology has usually focused on accurately finding the starting time of root exposure, by examining macroscopic or cell level changes caused by exposure. Here, we offer a detailed description of different novel techniques to obtain more precise erosion rates from highly accurate microtopographic data.

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Bioengineering

Generation of a Simplified Three-Dimensional Skin-on-a-chip Model in a Micromachined Microfluidic Platform
Ignacio Risueño 1, Leticia Valencia 1, Miguel Holgado 2, Jose L. Jorcano 3, Diego Velasco 1,4
1Department of Bioengineering and Aerospace Engineering, Universidad Carlos III de Madrid (UC3M), 2Group of Optics, Photonics and Biophotonics (GOFB). Center for Biomedical Technology, Universidad Politécnica de Madrid, 3Division of Epithelial Biomedicine, CIEMAT, 4Instituto de Investigación Sanitaria Gregorio Marañón

Here, we present a protocol to generate a three-dimensional simplified and undifferentiated skin model using a micromachined microfluidic platform. A parallel flow approach allows the in situ deposition of a dermal compartment for the seeding of epithelial cells on top, all controlled by syringe pumps.

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