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Atualmente o mundo se resume em duas palavras: tecnologia e agilidade. O cotidiano das pessoas está se tornando cada vez mais informatizado e, dentre os vários recursos criados para facilitar a vida cotidiana, estão os aplicativos móveis. Diante da pesquisa realizada pelo Instituto Brasileiro de Geografia e Estatística (IBGE) no ano de 2018 – intitulada de “Celular é o principal meio de acesso à internet no país” – o maior número de acesso à rede foi utilizado por meio de aparelhos celulares, o percentual que acessaram a internet pelo celular no ano de 2017 foi de 97%, o qual passou para 98,1% no ano de 2018, motivo pelo qual está relacionado à praticidade e agilidade do dispositivo. Tendo como base esse levantamento, tornou-se uma grande oportunidade para as empresas a criação de aplicativos via mobile como forma de revolucionar a relação de comunicação entre empresas e clientes. No mercado de esportes e atividades físicas isso não foi o oposto, a chegada dos aplicativos favoreceu tanto a prática do profissional quanto de estabelecimentos, que por sua vez, foram facilitados pela automação na gestão dos treinos. (MELLO, 2019) De acordo com Márcia Di Domenico (2019), o Brasil movimenta 2,1 bilhões de dólares no país com indústria de atividades físicas, agregando a maior receita da América Latina. Portanto, fica evidente que novos negócios inerentes à saúde e bem-estar estão ganhando cada vez mais expansão, é um mercado que não para de crescer. &nbsp

O desempenho térmico de uma edificação é um fator importante em habitações quando se preocupa em oferecer ao usuário o conforto térmico que o mesmo tem direito a ter. Uma edificação deve ser projetada para o clima em que ela está inserida para possuir um maior potencial em fornecer conforto térmico, e ainda economizar energia. Este trabalho teve como objetivo avaliar o desempenho térmico, segundo as diretrizes da norma brasileira de desempenho NBR 15575 de uma edificação unifamiliar localizada na cidade de Águas Belas-PE, Brasil. A avaliação do desempenho térmico foi realizada através de dois procedimentos presentes na NBR 15575: o procedimento simplificado e a simulação computacional. Como metodologia, foi realizada uma pesquisa exploratória e um estudo de caso. A avaliação através do método simplificado foi realizada pelo cálculo da transmitância térmica e capacidade térmica da envoltória da edificação, ou seja, das paredes de fachada e da cobertura. A simulação computacional foi realizada a partir do programa EnergyPlus, que com informações climáticas e um modelo tridimensional da edificação foi capaz de ensaiar as condições climáticas sobre a edificação e determinar o comportamento térmico da mesma. Os resultados obtidos através da análise pelos dois procedimentos anteriormente citados foram comparados e analisados conforme exigências da NBR 15575, sendo notadas pequenas divergências entre eles. A simulação computacional se mostrou mais efetiva quando comparado ao procedimento simplificado.

This research aims to evaluate the efficiency of thermography as a tool for the detection of faults in low voltage electrical networks. For this, a thermovisor was used in several equipment, such as panels, transformers and capacitor banks, to locate possible thermal anomalies. Two analyzes were made: one qualitative and the other quantitative. The first is based on the investigation between an adjacent element and the suspicious element and a definition of criticality, in which actions are taken to correct failures. The quantitative analysis aims at improving a definition of criticality where possible, such as not identifying the thermal emissivity of the materials involved that are not identified by the electric currents of the circuits. In addition, for the cases studied, a criticality comparison was made between the two methods.

The present work proposes to evaluate the contribution of the insertion of photovoltaic solar generation in the power quality in a distribution network in Marechal Deodoro-AL. The simulations were performed through the ATPDraw (Alternative Transient Program) software. These simulations were in situations of overload, considering the system in maximum imbalance allowed by PRODIST (Distribution Procedures) and in permanent regime. The currents of the photovoltaic solar generators have a unit power factor, and they even inject about 320 A in one of the buses of the feeder segment. The results obtained through graphs show that with the insertion of photovoltaic systems in the network there is a contribution of up to 2% in the voltage level, in case of overload, contributing in the quality of energy to the consumer.

In this work, it was developed a computer platform for risk management and analysis the risk of loss of human life, according to the new ABNT-NBR 5419:2015 standard applying a calculation routine with the purpose of facilitating the job of the professionals who need to follow this standard in the execution and verification of the necessity of LPS project, Lightning Protection System, in the structure to be analyzed. This computing routine was created by using the MATLAB program, in order to dimension the entire LPS using the software tool called GUIDE. Through the case study according to the standard and other books, the program was validated. This research is an important contribution to the speed and accuracy in risk management calculations and LPS dimension.

In this work is presented in a simulated environment, the analysis of the required length of conterpoise cable connected to the ground rod in a transmission line located in Maceio, Brazil, capable of avoiding the phenomenon known as back flashover, in other words, the disruptive discharges of return in the chain of insulators when subjected to standardized atmospheric discharges considering some values of soil resistivity and some types of arrangement of geometric arrangements of grounding systems.

O objetivo deste trabalho foi sintetizar e caracterizar fases derivadas de Ca2Fe2-xNbxO5+x, pela substituição parcial de íons Fe3+ por Nb5+, obtendo-se composições do tipo Ca2 Fe2-xNbxO5+x . A síntese foi feita em estado sólido, a temperaturas entre 1000°C e 1300°C, a partir da mistura finamente pulverizada dos reagentes. os produtos obtidos foram caracterizados por difração de raios-x por amostra policristalina, espectroscopia no infravermelho, análise térmica diferencial e ressonância paramagnetica eletronica. Verificou-se que a substituição do Nb5+ ocorre de modo desordenado em sítios de coordenação octaédrica. A Ca2Fe2O5 ocorre em fase ortorrombica. Em amostras com a composição Ca2 Fe2-xNbx05+x, para x ≤0,15 ocorre a fase ortorrombica para temperaturas abaixo de 1000°C. Acima desta temperatura aparecem as duas fases, uma ortorrombica e a outra cúbica. A fase cúbica apareceu sozinha quando 0,45≤x≤1 à temperatura de 1300°C. A Ca2Fe2O5 e antiferromagnética e a introdução do Nb5+ , diamagnético, dilui os cátions paramagnéticos, permitindo o estudo das amostras por RPE The objective of this work was to synthetize and characterize phases derived from Ca2Fe205 by parcial substitution of Fe3+ ions by Nb5+ , leading to compositions like Ca2 Fe 2-xNbxO5+x. The synthesis was carried out in solid state at temperatures ranging from 1000°C to 1300°C, after mixing the reactants and powdering them to very fine particles. The reactions products were characterized by x-ray diffraction by polycrystalline samples, infra-red spectroscopy, differential thermal analysis and eletron paramagnetic resonance. The substitution of Nb5+ occurs in a disordered way is sites of octahedric coordination. The Ca2Fe2O5 is an orthorrombic phase. In samples with the composition Ca2Fe2-xNbxO5+x, for x≤0,15 an orthorrombic phase is observed for temperatures smaller than 1000°C. For higher temperatures two phases are observed: orthorrombic and cubic. The cubic phase is the only one appear ing when 0,45≤x≤1 for temperature above 1300°C. The Ca2Fe2O5 is antiferromagnetic and the introduction of Nb5+ , diamagnetic, has a dilution effect over the para magnetic cations, which allowed the study of this samples by EPR.

Until now, the genus Orolaelaps De Leon was known only from the USA. Two new species of this genus, namely Orolaelaps piracicabensis n. sp. and Orolaelaps tupiniquim n. sp., are described from specimens collected in the State of São Paulo, Brazil. Orolaelaps quisqualis De Leon, the type species of the genus, is redescribed and an updated diagnosis of Orolaelaps is provided.

Abstract This paper describes the experience of Petrobras in the design, installation and operation of deepwater mooring systems incorporating high efficiency polyester fiber ropes. These ropes have been used now for more than 12 years in catenary and taut configurations to moor drilling and production units as well as storage and offloading facilities. The paper provides a history of the development of this technology, highlighting the key issues involved in introducing in mooring systems a component that has non-linear visco-elastic behavior. Differences to all steel systems in terms of: behavior, failure modes and design criteria and procedures are discussed. The paper presents the life cycle management strategy adopted by Petrobras in the early years of the use of this technology and its evolution that have guaranteed that the only failure mode observed over all these years was mechanical damage. It is expected that this paper shows that the use of polyester (polyethylene terephthalate) ropes in deepwater moorings is a mature technology. Introduction In the mid 80's Petrobras was drilling in Campos Basin in water depths around 600m and producing in depths around 400m. Mooring systems were all based on chain, wire rope and drag embedment anchors. Increasing water depths indicated that all steel systems would become anti-economical due to the reduction in restoring efficiency. Initial studies were based in using synthetic fiber ropes as extension wires in the mid-catenary. Since compliance to wave induced motions would be given by the geometry of the steel components the fiber rope should have stiffness similar to a steel wire rope. Therefore aramid ropes were the first to be considered (Riewald, 1986). Cost considerations led Petrobras and the US Navy (Karnosky & Liu, 1988) to start studying the use of polyester fiber ropes for moorings. It was also devised that, in deepwater, the axial compliance of polyester ropes could provide enough compliance so that a long catenary might not be required (Baxter, 1987). The use of polyester ropes in permanent moorings was a big challenge for several reasons, the most obvious one being establishing design methodologies and criteria for all possible failure modes. Since most large diameter fiber ropes were not optimized for tension and axial fatigue performance (Parsey, 1983)), it was also necessary to further develop rope constructions and generate enough data on the performance of these ropes. Results of a comprehensive study on the use of fiber ropes for deepwater moorings were presented in 1992 (Chaplin & Del Vecchio, 1992). Full details of the study, including assessment of failure modes, load-elongation behavior, design methodologies and criteria were produced (Del Vecchio, 1992). Since the study was partially based in model ropes, confirmation of load-elongation behavior in full scale and additional data on fatigue performance were obtained in the following years and incorporated in the type approval process of the ropes. Field trials were conducted in 1995 to assess installation procedures.