Implementation of a wireless monitoring system for a centrifugal pump

L'objectiu d'aquest informe és seleccionar, configurar i determinar els punts d'instal·lació d'un sistema d'adquisició de vibracions totalment sense fil per tal de monitoritzar en línia una bomba centrífuga situada en una estació d'Aigües de Barcelona. El monitoratge sense fil d’una bomba centrífuga implica una minimització de costos a l’hora de desenvolupar la instal·lació i major flexibilitat en la recolecta de dades, reduint el risc de danys i d’interferències electromagnètiques. Es proporcionen explicacions detallades del camp de les vibracions aplicat a les bombes centrífugues, inclòs l'equip necessari per al seu correcte seguiment. La recerca per a la selecció d'instrumentació, el procediment de configuració i l'elecció dels punts d'instal·lació són els objectius principals d'aquest document. A més, s'ha realitzat una anàlisi comparativa entre diferents terminals d'Aigües de Barcelona amb la finalitat de facilitar el futur diagnòstic i manteniment de la bomba centrífuga sotmesa als objectius del projecte.El presente informe tiene como objetivo seleccionar, configurar y determinar los puntos de instalación de un sistema de adquisición de vibraciones totalmente inalámbrico para la monitorización online de una bomba centrífuga ubicada en una estación de Aigües de Barcelona. El monitoreo inalámbrico de una bomba centrífuga implica una minimización de costes a la hora de llevar a cabo la instalación y mayor flexibilidad en la recolecta de datos, reduciendo el riesgo de daños y de interferencias electromagnéticas. Se proporcionan explicaciones detalladas del campo de las vibraciones aplicado a bombas centrífugas, incluyendo el equipo necesario para su correcto monitoreo. La investigación para la selección de la instrumentación, el procedimiento de configuración y la elección de los puntos de instalación son los principales objetivos de este documento. Además, se ha realizado un análisis comparativo entre diferentes terminales de Aigües de Barcelona con el fin de facilitar el diagnóstico y mantenimiento futuro de la bomba centrífuga objeto de los objetivos del proyecto.This report objective is to select, configure and determine the installation points of a fully wireless vibration acquisition system in order to online monitor a centrifugal pump located in an Aigües de Barcelona station. Wirelessly monitoring a centrifugal pump implies the cost minimization of the installation procedures and more flexibility in the data collection, reducing damage risks and electromagnetic interferences. Detailed explanations of the vibratory background in centrifugal pumps are provided, including the necessary equipment for their proper monitoring. The research for the instrumentation selection, the configuration procedure, and the installation points choice are the main purposes of this document. Furthermore, a comparative analysis between different Aigües de Barcelona terminals has been carried out with the purpose of facilitating the future diagnosis and maintenance of the centrifugal pump subjected to the project objectives

Spanish Lexical Accessibility and Vocabulary Acquisition: Catalan Dominant Bilinguals and Spanish Monolinguals Compared

Accessibilitat lèxica i adquisició de vocabulari en castellà: comparació entre bilingües dominants en català i monolingües en castellà. En aquest estudi s’analitza si els bilingües dominants en català residents a Girona i els monolingües en castellà residents a Toledo es comporten de manera diferent en un test de vocabulari castellà. El test emprat mesura tant el coneixement lèxic com l’accessibilitat lèxica, i es va administrar a dos grups de monolingües i bilingües en cada territori; un format per parlants de entre 5 i 6 anys, i un altre constituït per parlants de 8 i 9 anys. Els monolingües van superar als bilingües en tots dos grups d’edat, però la majoria dels bilingües dominants en català d’entre 8 i 9 anys van entrar dins la norma monolingüe, malgrat que les diferències entre tots dos grups encara eren observables.In this study it was investigated whether Catalan dominant bilinguals from Girona performed differently on a Spanish vocabulary test in comparison to Spanish monolinguals from Toledo. The test measured both lexical knowledge and lexical accessibility. The test was administered to two groups of bilinguals and monolinguals: one aged 5-6 and another aged 8-9. The monolinguals outperformed the bilinguals at both ages, but most of the Catalan dominant bilinguals fell within monolingual norm at age 8-9, despite the fact that at group level the differences were still observable

Molecular Spin Qudits for Quantum Algorithms

Presently, one of the most ambitious technological goals is the development of devices working under the laws of quantum mechanics. One prominent target is the quantum computer, which would allow the processing of information at quantum level for purposes not achievable with even the most powerful computer resources. The large-scale implementation of quantum information would be a game changer for current technology, because it would allow unprecedented parallelised computation and secure encryption based on the principles of quantum superposition and entanglement. Currently, there are several physical platforms racing to achieve the level of performance required for the quantum hardware to step into the realm of practical quantum information applications. Several materials have been proposed to fulfil this task, ranging from quantum dots, Bose-Einstein condensates, spin impurities, superconducting circuits, molecules, amongst others. Magnetic molecules are among the list of promising building blocks, due to (i) their intrinsic monodispersity, (ii) discrete energy levels (iii) the possibility of chemical quantum state engineering, and (iv) their multilevel characteristics, leading to the so called Qudits (d > 2), amongst others. Herein we review how a molecular multilevel nuclear spin qubit (or qudit, where d = 4), known as TbPc2, gathers all the necessary requirements to perform as a molecular hardware platform with a first generation of molecular devices enabling even quantum algorithm operations.Comment: Chem. Soc. Rev., 2017, Advance Articl

DIPLOMADO DE PROFUNDIZACION CISCO PRUEBA DE HABILIDADES PRÁCTICAS CCNP

En este laboratorio de habilidades prácticas se logró verificar los conceptos y conocimientos de redes y telecomunicaciones adquiridos en el diplomado de profundización CCNP, en las 4 partes implementadas se trabajó temas de conmutación, direccionamiento, DHCP, portchannel, vlans. Este trabajo se realizó en GNS3 donde se realizó toda la configuración requerida para los equipos cisco entre los cuales encontramos routers, switchs y PC. De esta manera se confirmó los conocimientos adquiridos durante el diplomado. Palabras Clave: escenario, CISCO, CCNP, OSPF, Enrutamiento, Redes, BGP, GNS3In this laboratory of practical skills, it was possible to verify the concepts and knowledge of networks and telecommunications acquired in the CCNP deepening diploma, in the 4 implemented parts, topics of switching, addressing, DHCP, portchannel, vlans were worked on. This work was carried out in GNS3 where all the configuration required for the Cisco equipment was carried out, among which we find routers, switches and PCs. In this way, the knowledge acquired during the course was confirmed. Key words: scenario, CISCO, CCNP, OSPF, Routing, Networking, BGP, GNS3

A predictive control unit for a Low Power 10-bit 200kS/s SAR ADC with Adaptive Conversion Cycle oriented to Audio Applications

This document presents the implementation of a new predictive algorithm for a 10-bit analogto-digital converter based on the successive approximation register (SAR), technique. The predictive algorithm (PSAR), is designed to predict a specific number of consecutive bits depending on the difference between the analog input voltage (Vin) and the reference voltage (Vref), provided by the DAC used in the successive approximation conversion technique. The PSAR is able to predict from 3 bits to 8 bits in a single conversion cycle. The typical SAR conversion employs a comparison between Vin and Vref on the voltage domain. In the case of the proposed PSAR, the Vin and Vref are converted to a time pulse width proportional to the magnitude of the inputs and the comparison of both is made in the time domain. The time difference between these two pulses is compared and registered by a counter to determine the total number of consecutive bits to predict. The proposed PSAR requires 13 clock cycles to perform conversion if there are not more than 2 consecutive bits to predict. The PSAR reduce 21% of the average conversion time when an ascendant ramp with the 1024 possible input values is applied.ITESO, A. C

Concepciones del profesorado de biología en ejercicio sobre el aprendizaje científico escolar

El objetivo principal de esta investigación es identificar y caracterizar las concepciones sobre el aprendizaje de la biología escolar que declara el profesorado de biología en ejercicio a partir de un cuestionario tipo Likert. Los resultados evidencian las tendencias epistemológicas sobre el aprendizaje científico escolar según el análisis de mapas cognitivos elaborados para dos profesoras de biología seleccionados de un conjunto de 117 sujetos que participaron en la investigación. Se desprende que el sistema de ideas y creencias que delimitan las concepciones del profesor sobre el aprendizaje de la biología se traduce en ideas persistentes, de cambio y en ocasiones contradictorias, lo que nos lleva a inferir que el aprendizaje para ellos consiste en la apropiación de significados más que en un complejo proceso de construcción individual o colectiva.The main objective of this research is to identify and characterize in service teachers' learning conceptions of school level biology, related to the Liker questionary. The results show epistemological trends in school science learning according to the analysis of cognitive maps developed for two biology teachers selected from a group of 117 subjects who participated in this research. It follows that the system of ideas and beliefs that define teachers' conceptions of learning biology, result in persistent ideas of change and sometimes contradict themselves, which led us to infer that learning, to them, is the appropriation of meanings rather than a complex individual or collective construction

Teachers’ conceptions of learning school science in service biology

El objetivo principal de esta investigación es identificar y caracterizar las concepciones sobre el aprendizaje de la biología escolar que declara el profesorado de biología en ejercicio a partir de un cuestionario tipo Likert. Los resultados evidencian las tendencias epistemológicas sobre el aprendizaje científico escolar según el análisis de mapas cognitivos elaborados para dos profesoras de biología seleccionados de un conjunto de 117 sujetos que participaron en la investigación. Se desprende que el sistema de ideas y creencias que delimitan las concepciones del profesor sobre el aprendizaje de la biología se traduce en ideas persistentes, de cambio y en ocasiones contradictorias, lo que nos lleva a inferir que el aprendizaje para ellos consiste en la apropiación de significados más que en un complejo proceso de construcción individual o colectiva.The main objective of this research is to identify and characterize in service teachers’ learning conceptions of school level biology, related to the Liker questionary. The results show epistemological trends in school science learning according to the analysis of cognitive maps developed for two biology teachers selected from a group of 117 subjects who participated in this research. It follows that the system of ideas and beliefs that define teachers’ conceptions of learning biology, result in persistent ideas of change and sometimes contradict themselves, which led us to infer that learning, to them, is the appropriation of meanings rather than a complex individual or collective construction

Regionalization and connectivity in the Gulf of Cádiz and Alborán Sea implication for marine spatial planning and coastal management

This work proposes a regionalization of marine waters south of the Iberian Peninsula based on empirical orthogonal functions and GIS analysis. The regions identified are consistent and correspond to hydrological mesoscale and macroscale structures well characterized from physical and biological viewpoints. Although it is difficult to determine the boundaries of a fluid continuously moving, the procedure used recognizes the most frequent patterns and can be used to reference geographically the most likely position of the limit among the regions. Once established the regions, the connectivity among them is addressed by means of geostrophic currents derived from altimetry data. The main geostrophic circulation pattern depict an elevate connectivity in the area that might facilitate the conservation and recovering of species, but also imply a higher vulnerability to negative externalities and highlight the need of models, marine spatial planning, and coastal management approaches that includes the pelagic ecosystem and connectivity of the seas. Furthermore, the results confirm that the cooperation between public authorities at different levels (local, regional, state) as well as among riparian countries is essential for marine spatial planning and prevention of potential risk derived from upcoming marine activities in the framework of the 2020 agenda and Blue Growth strategy.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tec

Estudio de los hongos que fructifican en la vegetación relicta de Abies pinsapo Boiss., en España peninsular. II. Ascomycotina. II

Se citan 41 taxones de la subdivisión Ascomycotina procedentes de la vegetación relicta de Abies pinsapo Boiss. en las provincias de Málaga y Cádiz. Es de resaltar la presencia de Aphiorhynchostoma curreyi (Rabenh.) MUller, Cucurbitaria berberidis (Pers.: Fries) Gray, Sydowia polispora (Bref. C v. Tavel) MUller, Glonium graphicum (Fries) Duby, Caloscypha fulgens (Pers.) Boudier, Coronophora abietina Fuck. y Rosellinia tassiana De Not.Se incluyen observaciones de tipo morfológico y taxonómico y se ilustran con figuras originales la mayoría de los táxones tratados.41 taxa of Ascomycotina collected in the relict vegetation of Abies p nsapo Bolso., in the provinces of Málaga and Cádiz, are showed here. One should note the presence of: Apiorhynchostoma curreyi (Rabenh.) Miller, Cucurbitaria berberidis (Pers.: Fries) Gray, Sydowia polispora (Bref. C v. Tavel) MUller, Glonium graphicum (Fries) Duby, Caloscypha fulgens (pers.) Boudier, Coronophora abietina Fuck. and Rosellinia tassitna De Not.Taxonomical and morphological observations are given. Original plates are included in almost all the studied taxa