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Durante los dos últimos cursos, la educación universitaria se ha visto obligada a cambiar de forma precipitada debido a la pandemia mundial que nos ha afectado. A pesar de los esfuerzos de las instituciones por adaptarse de una forma adecuada a un modelo semi-presencial o virtual a lo largo del curso, la percepción de los estudiantes no siempre corresponde con la que se pretende desde los organismos oficiales. En este estudio se ha realizado una encuesta voluntaria al alumnado de diferentes titulaciones de grado y másteres del área de ingeniería con el objetivo de someter a examen las medidas adoptadas por la Universidad de Granada (UGR) y comprobar si son aceptadas por los estudiantes y si, desde su punto de vista, se podrían mantener a largo plazo.

In this paper, we present a passive tag for the determination of gaseous oxygen in intelligent packaging (IP). The power supply for this tag is obtained from thermoelectric energy harvesting taking advantage of the temperature difference between a cooled package and the human body. For this purpose, a compact Peltier module is attached to the surface of the pack7 age. This device is able to generate 1.2 mW when a temperature difference of 25 °C is applied between its surfaces. A dc-to-dc boost converter is included to generate an output voltage of 3.3 V and an output current of 225 µA from the harvested energy by the Peltier cell, which are used to supply the measurement circuitry. A luminescent membrane sensitive to oxygen is used as a gas detector in the package. The generated signal is compared to a reference value to evaluate if the oxygen concentration inside the package falls below or above a predetermined value. This is shown by turning on a green or a red LED, respectively. The proposed system presents a resolution of 0.02% of the predicted oxygen concentration in the range of interest (0%–5%) and a limit of detection (LOD) of 0.007%, which makes the instrument appropriate to be used in IP and active packaging (AP) technology., This work was supported in part by the Spanish Ministry of Economics and Competivity under Project CTQ2016-78754-C2-1-R and in part by the Unidad de Excelencia de Química aplicada a biomedicina y medioambiente, University of Granada. The work of P. E. Araque was supported by the Spanish Ministry of Education, Culture and Sport (MECD) under Grant FPU13/05032. The work of I. M. P. de Vargas-Sansalvador was supported by the European Unions Horizon 2020 research and innovation program under Grant 706303 (MultiSens)

Yes Publicación que reúne un conjunto de recomendaciones para prevenir la transmisión de microorganismos multirresistentes en la población atendida en los centros y servicios sociales de Andalucía. Su objetivo principal es proporcionar herramientas a los equipos que trabajan en los centros residenciales de nuestra comunidad autónoma, para prevenir y controlar esta transmisión en sus respectivas áreas asistenciales, ya que se ha considerado un entorno prioritario en esta cadena epidemiológica.

In this work we present a full-passive flexible multigas sensing tag for the determination of oxygen, carbon dioxide, ammonia, and relative humidity readable by a smartphone. This tag is based on near field communication (NFC) technology for energy harvesting and data transmission to a smartphone. The gas sensors show an optic response that is read through high-resolution digital color detectors. A white LED is used as the common optical excitation source for all the sensors. Only a reduced electronics with very low power consumption is required for the reading of the optical responses and data transmission to a remote user. An application for the Android operating system has been developed for the power supplying and data reception from the tag. The responses of the sensors have been calibrated and fitted to simple functions, allowing a fast prediction of the gases concentration. Cross-sensitivity has also been evaluated, finding that in most of the cases it is negligible or easily correctable using the rest of the readings. The election of the target gases has been due to their importance in the monitoring of modified atmosphere packaging. The resolutions and limits of detection measured are suitable for such kinds of applications., This work was supported by project CTQ2013-44545-R from the Ministry of Economy and Competitiveness (Spain) and Junta de Andalucía (Proyecto de Excelencia P10- FQM-5974). These projects were partially supported by European Regional Development Funds (ERDF). P. Escobedo wants to thank the Spanish Ministry of Education, Culture and Sport (MECD) for a pre-doctoral grant (FPU13/05032).

Tesis Univ. Granada. Departamento de Electrónica y Tecnología de Computadores

Existen infinidad de personas cuyos trabajos dependen directamente de la utilización de colores. En la mayoría de los casos es complicado diferenciar los matices entre distintos colores ya que, en general, estos dependen tanto de factores externos, como la luz que incide sobre ellos en ese momento, como de las propias personas, dotando a la visión del color de cierta subjetividad. Además, hay usuarios que padecen problemas de visión, los cuales les generan dificultades en su día a día debido a la imposibilidad de diferenciar correctamente entre colores. Hoy en día existen sistemas capaces de reconocer los colores de diferentes objetos de forma muy precisa, aunque suelen tener un coste elevado y su uso está principalmente enfocado a la pintura y el arte. El objetivo del estudio es crear un sistema basado en tecnologías de reconocimiento de color. El dispositivo diseñado tiene que ser capaz de ofrecer datos específicos de las características de los colores a las personas que busquen referencias de estos mismos. Con esta finalidad en mente, cabría preguntarse de qué manera se puede desarrollar un sistema, encargado del reconocimiento de colores, con alta precisión, que resulte al alcance de la mayor parte de los usuarios. El sistema desarrollado se presenta en una estructura portátil, perfecta para su uso en cualquier situación sin que su transporte resulte un estorbo. Se ha utilizado un procesador Arduino para su desarrollo, ya que permite una amplia gama de posibilidades con buenos resultados a muy bajo coste. Además, este sistema se comunica, inalámbricamente, con una aplicación móvil. Esto es una gran ventaja para los usuarios que deseen utilizarlo ya que, hoy en día, la mayoría de las personas poseen un teléfono móvil o pueden adquirirlos a un precio reducido. Tras las pruebas finales, realizadas con el sistema completo, los resultados obtenidos muestran una alta precisión del sistema. Ante una repetición de adquisiciones al mismo color, los resultados tienen un error despreciable. Las comparaciones se ejecutan correctamente, ofreciendo resultados muy similares al color medido. Estos resultados facilitan la necesidad de ciertas personas a conocer las características exactas del color que tienen delante, ofreciendo también la posibilidad de obtener los datos del número de referencia de un fabricante que distribuya ese color para una aplicación determinada, por ejemplo, pintura. El sistema puede ayudar en muchos ámbitos a cualquiera de las personas descritas al comienzo. Además, se pueden realizar actualizaciones al sistema que le añadan nuevas características como, por ejemplo, una respuesta de sonido tras las comparaciones de colores o pintar la pantalla del color aproximado que se encuentra en la base de datos. There are countless people whose jobs depend directly on the use of colours. Most of the times it is difficult to differentiate the nuances between different colours, considerate that, in general, they depend on external factors, such as how they are lighted up at that moment. Besides the large number of people who suffer from visual problems, which cause them difficulties in their day to day activities due to the impossibility to distinguish between colours. Nowadays there are systems which are capable of recognize the colours of different objects in a very precise way, although they usually have a high cost and their use is mainly focused on painting and art areas. The objective of this study is to develop a system based on colour recognition technologies. The designed device has to be able to offer specific data of colour’s characteristics to the people who look for references of them.With this purpose in mind, one might wonder how a system can be developed, responsible for the recognition of colours, with high precision, which is available to the majority of users. The developed system is presented in a portable structure, perfect for his use in any situation without its transportation being a hindrance. An Arduino processor has been used for its development, since it allows the system to reach a wide range of possibilities with good results at a very low cost. In addition, this system communicates, wirelessly, with a mobile application. This is a great advantage for users who want to use it because, nowadays, most of people own a mobile phone or can buy it at a reduced price. After the final tests, carried out with the complete system, the results obtained show a high precision of the system. Faced with a repetition of acquisitions of the same colour, the results have a negligible error. The comparisons are executed correctly, offering results very similar to the measured colour. These results facilitate the need for certain people to know the exact characteristics of the colour in front of them, also offering the possibility of obtaining the data of the reference number of a manufacturer that distributes that colour for a given application, for example, painting. After the final tests, done with the system complete, the obtained results show a high precision of the system. compared with repeated acquisitions of the same colour, the results have a negligible error. The comparisons are executed correctly, offering results very similar to the measured colour. These results facilitate the need OF certain people to know the exact characteristics of the colour in front of them, also offering the possibility of obtaining the data of the manufacture’s reference number that distributes that colour for a certain application, for example, painting. Taking into account these results, the system can help many people in a lot of areas, which are described at the beginning. In addition, you can make updates to the system to add new features, for example, a sound response after comparisons of colours or the possibility of painting the screen with the recognised colour. Ingeniería Electrónica Industrial y Automática

Oxygen concentration determination is of importance across many different industries, biomedical research among them. In biological systems, in vivo oxygen levels vary across a wide spectrum and strongly influence function of cells and tissues. Direct measurements of oxygen tension and its progression in real-time are necessary in order to understand and control cell survival, proliferation and differentation. In this thesis, special attention is payed to skin tissue. An in-depth understanding of these aspects will allow to provide better diagnostic and therapeutic tools for wound care. The general objective of this thesis is to analyze dissolved oxygen concentration in a two-dimensional tissue culture of a keratinocyte cell line (HaCaT) via the development and application to this purpose of an optical sensor. The sensor is based on a metalloporphyrin membrane (PtOEP) that emits a fluorescence signal that is quenched by oxygen in the environment. Images of the membrane are captured using time-lapse microscopy with a filter at the desired wavelength. Average pixel value is then analyzed, as it is directly related to O2 concentration. The porphyrin-based optical sensor developed in this work is proved to be compatible with cell culture. Using this sensor, changes in oxygen concentration in a physiological range can be detected. Dissolved O2 concentration in culture medium is found to decrease at high cell densities as a result of O2 consumption. It is also possible monitor discontinuities in a monolayer of cells by detection of local O2 concentration using this sensor. Ingeniería Biomédica