Mass production of β-silicon carbide nanofibers by the novel method of Forcespinning

Non-oxide Ceramics such as silicon carbide have very unique properties, for example high toughness, thermal stability, wear resistant, and thermal shock resistance these properties make these ceramic fibers excellent for high temperature applications. Here we present the development of Silicon Carbide nanofibers utilizing a Polystyrene/Polycarbomethylsilane solution as the precursor materials. The Forcespinning ® was performed under a controlled nitrogen environment to prevent fiber oxidation. Characterization was conducted using scanning electron microscopy, x-ray diffraction, and thermogravimetric analysis. The results show successful formation of high yield, long continuous bead-free nanofibers with diameters ranging from 280nm to 2 micron depending on the selected processing parameters. The sintered precursors show formation of SiC nanofibers with a beta phase crystalline structure and oxygen content below 15%

Beneficios ambientales de la participación ciudadana en la planificación

El creciente interés suscitado por incorporar la participación en los procesos de planificación junto con su potencial utilidad como oportunidad frente a la creciente complejidad espacial y los nuevos retos territoriales, lleva a estudiar e identificar cuáles son los beneficios ambientales que se derivarían de su instrumentalización. Para dar respuesta al objetivo anterior, en primer lugar, se intenta justificar la fuerte relación y necesidad existentes entre los procesos de planificación y la participación ciudadana, tratando de evidenciar por qué debe considerarse a ésta como elemento operativo y central. En segundo lugar, ensayando la anterior reflexión, se sondean los resultados de la participación en varios Planes generales de ordenación urbana. Por último, a partir del análisis anterior, se extraen una serie de conclusiones en relación con los beneficios ambientales identificados como consecuencia de la incidencia de la participación detectada, con sus limitaciones y oportunidades.The growing interest in incorporating citizen participation in urban planning together with its potential utility as an opportunity to face the increasing spacial complexity and new territorial challenges have led us to study and identify what are the environmental benefits that result from the instrumentalization of citizen participation in urban planning processes. First, we justify the strong relationship between urban planning processes and citizen participation. In addition to this, we find out the reason why citizen participation has to be considered as an operating element and core. Secondly, after trying out the previous ideas, we analyse the results of citizen participation in several Masterplans. Finally, after all the analysis mentioned above, we draw a set of conclusions regarding the environmental benefits identified, their limitations and opportunities.Peer Reviewe

Identificación y propuesta de criterios para mejorar la comunicación de contenidos ambientales en cartografía de planificación urbana: ejemplos andaluces

La creciente demanda ciudadana por intervenir en las cuestiones que afectan a la planificación de las ciudades y el territorio obliga a centrar la atención sobre la cartografía como elemento clave y fundamental en los procesos de comunicación. A este parecer, el objetivo principal de esta investigación ha sido identificar y proponer un conjunto de criterios que incrementen la capacidad comunicativa de los mapas de planificación urbana, de forma que se facilite su lectura y comprensión. Para ello, en primer lugar se realizó una revisión bibliográfica para comprender el lenguaje cartográfico e identificar qué criterios podrían mejorar la comunicación de la cartografía. Finalmente, esa sintaxis o lenguaje cartográfico (dimensiones geométricas, variables visuales y propiedades perceptivas) fue aplicado a determinados contenidos ambientales de la cartografía de planificación urbana con la intención de proponer los más idóneos en términos comunicativos.The growing citizen's demand to become involved in questions regarding city and land-use planning require paying attention to the cartography as a key and fundamental element in the communication process. In this regard, the main aim of this research has been to identify and propose a set of criteria in order to enhance the communicative capacity of urban planning maps, by facilitating their lecture and compression. In order to respond to the above, first a bibliographic review was performed to understand the cartographic language and identify which criteria could improve the cartographic communication aspect. Finally, this syntax or cartographic language (geometric dimensions, visual variables and perceptive properties) was applied to a specific environmental information of cartography of urban planning with the intention to propose the most adequate way from a communicative point of view.Peer Reviewe

Energy Management and Privacy in Smart Grids

Despite the importance of power systems in today’s societies, they suffer from aging infrastructure and need to improve the efficiency, reliability, and security. Two issues that significantly limit the current grid’s efficient energy delivery and consumption are: loadollowing generation dispatch, and energy theft. A loadollowing generation dispatch is usually employed in power systems, which makes continuous small changes so as to account for differences between the actual energy demand and the predicted values. This approach has led to an average utilization of energy generation capacity below 55% [49]. Moreover, energy theft causes several billion dollar losses to U.S. utility companies [31] [16], while in developing countries it can amount to 50% of the total energy delivered [48]. Recently, the Smart Grid has been proposed as a new electric grid to modernize current power grids and enhance its efficiency, reliability, and sustainability. Particularly, in the Smart Grid, a digital communication network is deployed to enable two-way communications between users and system operators. It thus makes it possible to shape the users’ load demand curves by means of demand response strategies. Additionally, in the Smart Grid, traditional meters will be replaced with cyber-physical devices, called smart meters, capable of recording and transmitting users’ real-time power consumption. Due to their monitoring capabilities, smart meters offer a great opportunity to detect energy theft in smart grids, but also raise serious concerns about users’ privacy. In this dissertation, we design optimal load scheduling schemes to enhance system efficiency, and develop energy theft detection algorithms that can preserve users’ privacy

Energy Management and Privacy in Smart Grids

Despite the importance of power systems in today’s societies, they suffer from aging infrastructure and need to improve the efficiency, reliability, and security. Two issues that significantly limit the current grid’s efficient energy delivery and consumption are: loadollowing generation dispatch, and energy theft. A loadollowing generation dispatch is usually employed in power systems, which makes continuous small changes so as to account for differences between the actual energy demand and the predicted values. This approach has led to an average utilization of energy generation capacity below 55% [49]. Moreover, energy theft causes several billion dollar losses to U.S. utility companies [31] [16], while in developing countries it can amount to 50% of the total energy delivered [48]. Recently, the Smart Grid has been proposed as a new electric grid to modernize current power grids and enhance its efficiency, reliability, and sustainability. Particularly, in the Smart Grid, a digital communication network is deployed to enable two-way communications between users and system operators. It thus makes it possible to shape the users’ load demand curves by means of demand response strategies. Additionally, in the Smart Grid, traditional meters will be replaced with cyber-physical devices, called smart meters, capable of recording and transmitting users’ real-time power consumption. Due to their monitoring capabilities, smart meters offer a great opportunity to detect energy theft in smart grids, but also raise serious concerns about users’ privacy. In this dissertation, we design optimal load scheduling schemes to enhance system efficiency, and develop energy theft detection algorithms that can preserve users’ privacy

Collection and analysis of data for ship condition monitoring aiming at enhanced reliability and safety

This paper presents the onboard measurement campaign for the case study of a container ship and provides a customary methodology for monitoring important machinery systems. The main principle aim of this paper is to collect important machinery data and parameters from critical systems, located in the engine room of the ship, by determining systems to be monitored, scenarios for monitoring, sensors and suitable portable equipment and physical parameters to be inspected

Molecularly imprinted silica films prepared by electroassisted deposition for the selective detection of dopamine

Dopamine (DA) can be detected by electrochemical oxidation in conventional electrodes. However, the presence of other oxidizable species (interferents) usually present in physiological fluids at high concentrations (like ascorbic acid) makes very difficult its electrochemical detection. In the present work, glassy carbon electrodes have been modified with molecularly imprinted silica (MIS) films prepared by electroassisted deposition of sol–gel precursors. The production of MIS films was performed by adding the template molecule (DA) to the precursor sol. The molecular impression of silica was assessed showing a high coherency allowing a filtering capacity in the molecular scale. The MIS-modified electrodes present a high selectivity for the detection of DA in neutral or acidic solutions. The MIS-modified electrodes allow the amperometric determination of dopamine in solutions containing ascorbic acid with molar ratios lower than 1:50,000.We acknowledge the financial support from the Fundación Ramón Areces (CIVP16A1821), Spanish Ministerio de Economía y Competitividad (MAT2013-42007-P) and Generalitat Valenciana (PROMETEO2013/038)

Implicancias sentipensantes de las narraciones en juego

Se postulan las narraciones en juego como un acontecer de significaciones para tal fin bajo un enfoque de la epistemología del sur decolonial plantea un conocimiento pertinente como teoría local, la cual configura un dialogo entre el construccionismo social y el arte escénico sobre esta base, como principio estético el juego escénico narrativo se concibe como acción teorizante del sentipensar. En efecto resulta posible responder una serie de cuestiones clave como acción teorizante del sentipensar y responder, ¿cuáles son las implicaciones que la narración promueve entre arte y vida que ayuda a la reducción de los conflictos?, ¿las narraciones de qué manera se relacionan con la educación sensible?, ¿qué pasa en el acontecimiento simultáneo como experiencia?, ¿cuál es el conocimiento que la narración en juego descubre en el trabajo con comunidad, y que la investigación promueve que emerja? Investigación-acción considerada desde el territorio profesional interpretativo de la participación oral contextuada en territorio colombiano, abordaje desde la categoría sentípensante.The narratives in play are posited as a happening of meanings from the decolonial south epistemologies, and establish their dialogical relationship between the line of social constructionism and scenic art, to link ideas within the aesthetic, through the narrative scenic game as action Theorizing the felt thinking and responding, what are the implications that the narrative promotes between art and life that helps the reduction of conflicts ?, the narratives in what way are related to sensitive education?, What happens in the simultaneous event as an experience ?, ¿what is the knowledge that the narrative at play discovers in the work with community, and that the research promotes that emerges? Action research considered from the professional territory interpretative of the oral participation that is contextualized in Colombian territory, Approach from the category I felt thinking (traducción Mery Rodriguez y Frank James Augustine).Facultad de Bellas Arte

Synthesis of a thermoresponsive crosslinked MEO2MA polymer coating on microclusters of iron oxide nanoparticles

Encapsulation of magnetic nanoparticles (MNPs) of iron (II, III) oxide ( Fe3O4) with a thermopolymeric shell of a crosslinked poly(2-(2-methoxyethoxy)ethyl methacrylate) P(MEO2MA) is successfully developed. Magnetic aggregates of large size, around 150–200 nm are obtained during the functionalization of the iron oxide NPs with vinyl groups by using 3-butenoic acid in the presence of a water soluble azo-initiator and a surfactant, at 70 °C. These polymerizable groups provide a covalent attachment of the P(MEO2MA) shell on the surface of the MNPs while a crosslinked network is achieved by including tetraethylene glycol dimethacrylate in the precipitation polymerization synthesis. Temperature control is used to modulate the swelling-to-collapse transition volume until a maximum of around 21:1 ratio between the expanded: shrunk states (from 364 to 144 nm in diameter) between 9 and 49 °C. The hybrid Fe3O4@ P(MEO2MA) microgel exhibits a lower critical solution temperature of 21.9 °C below the corresponding value for P(MEO2MA) (bulk, 26 °C). The MEO2MA coating performance in the hybrid microgel is characterized by dynamic light scattering and transmission electron microscopy. The content of preformed MNPs [up to 30.2 (wt%) vs. microgel] was established by thermogravimetric analysis while magnetic properties by vibrating sample magnetometry.Andalusian Knowledge AgencyEuropean Commission 291780Ministry of Economy, Innovation, Science and Employment of the Junta de AndalucíaSpanish "Ministerio de Economía y Competitividad" PID2019-103938RB-I00 CTQ2017-86125-PJunta de Andalucía B-FQM-243-UGR18 P18-RT-2961CEI-Biotic CEI2013-MP-1

LAS MÚSICAS COLOMBIANAS EN EL CURRÍCULO ADICIONAL DE LOS PROGRAMAS PROFESIONALES DE EDUCACIÓN MUSICAL DE IBAGUÉ

El presente artículo es un estudio de caso con una posición teórica decolonial, cuyo objetivo fue revisar la presencia de las músicas colombianas en el currículo adicional de los programas profesionales de educación musical de la ciudad de Ibagué, los cuales son ofertados por el Conservatorio del Tolima. En primera instancia, el estudio buscó identificar el currículo adicional de la institución, encontrando que el principal espacio curricular complementario es el concierto, el cual se da en un importante salón que encaja en la definición de currículo como lugar. En segunda instancia, se encontró que la música clásica domina el salón de conciertos, en el cual la presencia de músicas colombianas es reducida. Los hallazgos del estudio muestran que las músicas colombianas presentes en este currículo adicional obedecen a los patrones de blanqueamiento propios de la colonialidad.