bluuebunny/crossref_metadata_2025 huggingface dataset:
Aplicação Do Controle Repetitivo A Inversor PWM Monofásico Com Filtro LC De Saída Utilizado Em Fonte Programável C.A.
Authors: Oliveira André Filipe B. Oliveira , Silva Sidelmo M. , Santos Cláudio H. G. , Cardoso Filho Braz de J.
Published: July 2018

Esse trabalho objetiva o desenvolvimento de uma estratégia de controle, baseada no controlador repetitivo, para regulação de um inversor PWM com filtro LC de saída, cuja aplicação é uma fonte programável de potência c.a. Para sintonia do controlador, os conceitos de margens de estabilidade e faixa de passagem são utilizados. Simulações do tipo (Processor In the Loop) PIL, além de resultados experimentais, obtidos em um modelo de escala reduzida, são utilizados para validar a estratégia de controle proposta. Os resultados mostram que o controlador desenvolvido consegue rejeitar perturbações provocadas por correntes de carga distorcidas e atracar referências periódicas, evidenciando boa qualidade do controle, tanto em regime transitório, quanto regime permanente. As principais contribuições do trabalho são: (i) comparação da uso do controlador repetitivo e do PI, em aplicações em fontes programáveis c.a; (ii) aplicação de técnicas de sintonia de controladores clássicos em sistema com controlador repetitivo; (iii) apresentação dos resultados da técnica de controle repetitivo associada a controle PI com compensação de realimentações internas da planta, aplicada ao controle de uma fonte c.a. programável.
Ac–dc Serial-interleaved Boost Converter Applied In A Single-stage Pfc
Authors: Postiglione Cícero S. , Fuerback André L. , Nascimento Claudinor B. , Martins Denizar C. , Perin Arnaldo J.
Published: July 2018

This paper presents single-stage power factor corrected (PFC) AC–DC converters based on a modified serial-interleaved boost converter. The topologies are a composition of a modified interleaved boost converter with a DC–DC converter. The interleaving allows each boost converter to operate in discontinuous conduction mode (DCM) while still having continuous conduction mode (CCM) input current. High power factor and reduced current ripple are obtained, meeting IEC 61000-3-2 regulations for wide load range. The converters also operate with zero voltage switching (ZVS) resulting in high efficiency. The steady-state analysis of the converter is performed along with the description of the converter operation stages. Finally, a simplified design procedure is proposed, from where a prototype is designed and built. Finally experimental results from a laboratory prototype are presented.
Active And Reactive Power Control In A Three-phase Grid-connected Pv Power System Using Dq0 Transformation
Authors: Schonardie Mateus F. , Coelho Roberto F. , Schmitz Lenon , Martins Denizar C.
Published: July 2018

This work proposes a 12 kW three-phase grid-connected single stage PWM DC-AC converter destined to process the energy provided by a photovoltaic array composed of 57 KC200GT PV modules with high power factor for any condition of solar radiation. The PWM inverter modeling and control are achieved using dq0 transformation, in order to allow the system operation also as active power filter, compensating the harmonic components and the reactive power generated by non-linear loads connected to the mains grid. An input voltage clamping technique is proposed to impose the photovoltaic operation on the maximum power point. Simulation and experimental results are presented for validating the proposed methodology.
Análise Em Regime Permanente Do Filtro Ativo Universal
Authors: Matias Rafael R. , Jacobina Cursino B. , Oliveira Alexandre C. , Santos Welflen R. N.
Published: July 2018

Este trabalho trata da análise do filtro ativo universal trifásico operando em regime permanente. Este tipo de topologia é capaz de compensar componentes harmônicas na corrente e na tensão, bem como minimizar a circulação energia reativa. A análise proposta expõe que para a execução destas tarefas, a fase da tensão da carga pode assumir qualquer valor. Assim, esse grau de liberdade é explorado para minimizar as perdas nas chaves semicondutoras do conversor. Além disso, são verificados os níveis das amplitudes das correntes e tensões no conversor, da componente fundamental e da 5ª e 7ª harmônicas, quando surgem mudanças na tensão de alimentação, no fator de potência da carga e na relação de espiras do transformador.
Análise Comparativa De Inversores Multiníveis Monofásicos Baseados Em Células De Comutação
Authors: Neto João A. F. , Bascopé René P. T. , Cruz Cícero M. T.
Published: July 2018

Este artigo apresenta a análise comparativa para operação em regime permanente de três inversores multiníveis monofásicos, com grampeamento do ponto neutro (NPC – Neutral Point Clamped), baseados em células de comutação. O primeiro é um inversor NPC de cinco níveis baseado em células de comutação de múltiplos estados (CCME); o segundo também é um inversor NPC de cinco níveis baseado em células de comutação intercaladas (CCI) e o terceiro é um inversor NPC de três níveis baseado no paralelismo de células de comutação (PCC). Para esta análise, a freqüência de comutação é mantida constante e os parâmetros avaliados são o volume dos dissipadores e dos componentes passivos, a Distorção Harmônica Total DHT da tensão de saída, a densidade de potência e o rendimento de cada topologia. São apresentados resultados da análise teórica, assim como resultados experimentais obtidos a partir de protótipos de 5 kW.
Estratégia De Controle Multifuncional Para Sistemas Fotovoltaicos De Geração De Energia Elétrica
Authors: Brandão D. I. , Marafão F. P. , Gonçalves F. A. S. , Villalva M. G. , Gazoli J. R.
Published: July 2018

Este artigo propõe uma estratégia multifuncional para o controle dos inversores nos sistemas fotovoltaicos de geração distribuída. Tal estratégia permite que o sistema injete na rede a energia disponível do lado primário, e funcione simultaneamente como regulador de tensão no ponto de acoplamento comum ou filtro ativo de potência, reduzindo os distúrbios da corrente e melhorando a qualidade da energia no ponto de conexão. A principal diferença entre a estratégia proposta e outras encontradas na literatura é que neste trabalho, as referências de controle são geradas por meio da Teoria de Potência Conservativa. Isto possibilita o uso de referências desacopladas (ortogonais) de corrente e de potência para o controle do inversor, o que torna o sistema de controle bastante flexível e seletivo no que diz respeito à escolha de diferentes objetivos de operação. Além disto, o controlador multifuncional também permite a operação do sistema em modo ilhado ou conectado à rede. Resultados de simulação e experimentais são apresentados para validar a metodologia proposta.
Single-phase Active Power Filters With Reduced Number Of Power Switches And Optimum Voltage Control Angle
Authors: Santos Welflen R. N. , Da Silva Edison R. C. , Jacobina Cursino B. , Fernandes Eisenhawer de M. , Oliveira Alexandre C. , Matias Rafael R. , Filho Dalton F. G. , Almeida Otacilio M. , Santos Patryckson M.
Published: July 2018

This paper proposes some topologies of universal active power filter for single-phase applications with reduced number of components. Some configurations are proposed: two with both series and parallel converters connected in half-bridge, sharing the same d.c.-bus mid-point connection; and the others with the series and parallel converters sharing one leg. It will be demonstrated the existence of a coupling law between the two converters (Se and Sh) related to the voltage capabilities. All configurations compensate current and voltage harmonic and provide power factor control close to unit. Comparisons between the structures are made and the steady-state analysis are also presented to demonstrate that it is possible to obtain an optimum voltage angle in order to reduced the amplitudes of the converters’ currents and, consequently, the total losses of the systems. Simulated and experimental results validate the theoretical considerations.
Optimization Of The Ferrite Core Volume In A Single-phase Grid-connected Pv System With Active And Reactive Power Control
Authors: De Souza Kleber C. A. , Dos Santos Walbermark M. , Martins Denizar C.
Published: July 2018

This paper presents a method to minimize the losses and the magnetic cores volume in a single-phase active power filter based in a two stages grid-connected PV system. The proposed circuit injects PV generated power into the utility, and always acts as an active power filter to compensate load harmonics and reactive power such that the input power factor is very high independently of the solar radiation and the type of the load connected. In sunny days, the system processes all the reactive and active load power and the excessive power from the PV module can be fed to the utility. On the other hand, on cloudy days for instance, if the PV power is not enough, the system processes all the reactive load power and the shortage of active load power is supplemented by the utility. Besides, just using one current sensor, the control strategy is simple and of suitable for practical implementation.
Desenvolvimento E Implementação De Um Aparelho Medidor De Flicker Por Medição Direta Da Variação Luminosa
Authors: Colnago Guilherme P. , Macedo Jr. José Rubens , Vieira José Luiz F.
Published: July 2018

Este artigo apresenta o desenvolvimento de um novo medidor de flicker baseado na análise direta da variação instantânea do fluxo luminoso. A proposta do medidor é baseada no Flickermeter IEC modificado, o que permite medir o flicker produzido por flutuação de tensão em lâmpadas de tecnologias distintas. Isso o torna uma alternativa ao Flickermeter convencional, que não apresenta resultados válidos para ambientes iluminados com lâmpadas não- incandescentes. Um protótipo do equipamento foi desenvolvido e os resultados obtidos são apresentados e analisados.
Arranjo Flexível De Conversores Estáticos Para Sistemas De Conversão De Energia Eólica Conectados À Rede
Authors: Grigoletto Felipe B. , Pinheiro Humberto
Published: July 2018

Este artigo apresenta um arranjo flexível de conversores estáticos para sistemas de conversão de energia eólica (WECS), conectados à rede. O arranjo flexível proposto utiliza módulos conversores trifásicos back-to-back com interruptores auxiliares de reconfiguração. As principais características do arranjo flexível proposto são: (i) expansão dos limites de capabilidade de potência reativa, (ii) alta eficiência, principalmente para condições de baixa velocidade do vento em que a potência ativa é reduzida e (iii) baixo conteúdo harmônico das correntes de saída. Além disso, uma descrição detalhada dos modos de operação, definição das referências de potência, bem como os controladores das correntes do lado da rede, do lado do gerador e correntes circulantes são apresentados. Finalmente, resultados experimentais demonstram o bom desempenho e flexibilidade do arranjo proposto.
Proposta De Metodologia Para O Gerenciamento Automático De Sistemas Fotovoltaicos De Geração Distribuída
Authors: Brandão D. I. , Marafão F. P. , Farret F. A. , Simões M. Godoy
Published: July 2018

O objetivo principal deste artigo é propor uma metodologia de gerenciamento automático para um sistema fotovoltaico de geração distribuída. A metodologia apresentada é baseada em um conjunto de premissas de operação, bem como informações relativas ao preço de comercialização da energia em uma dada rede, ou ainda, preferências definidas pelos usuários do sistema. Algumas características do sistema proposto são: (i) capacidade de fornecer energia ativa e/ou reativa para cargas locais e vizinhas; (ii) armazenar energia em um banco de baterias; (iii) priorizar cargas; (iv) atuar conectado ou isolado da rede principal e, (v) operar como filtro ativo de potência. Por fim, algumas das possibilidades de operação do sistema serão discutidas e validadas por meio de resultados de simulação e experimental.
SALAD ONION CULTIVAR YALTINSKIY PLUS IS A PROMISING INNOVATIVE PRODUCT OF THE CRIMEA
Authors: Nemtinov V. I. , Kostanchuk Yu. N. , Golubkina N. А.
Published: July 2018

Yaltinskiy onion is one of the symbols of the Crimea, the very name of which is tied to the famous resort, which emphasizes belonging to the Crimean Peninsula. Salad sweet onion is in constant demand among the guests of the peninsula and locals. Its price is several times higher than the price of other onion varieties. Unfortunately, under the guise of Yaltinskiy sortotype, products that are much inferior to it according to taste peculiarities are often sold. In this regard, creation of new cultivar of sweet salad onion, exceeding palatability of the existing cultivar Yaltinskiy Rubin is an urgent task, having an undeniable economic direction. The source material was collected at various zones of the Crimean Peninsula. During the research, hybridization and selection in hybrid progeny were carried out. The plants were analyzed using various methods of evaluation. Much attention was paid to biochemical analysis. The palatability traits are important for the onion cultivars of salad direction. The best indicators for sugars and vitamin C were identified in salad onion of a new cultivar Yaltinskiy plus. Reducing the content of essential oil has improved the taste and its consumer properties. Useful properties were also supplemented by the fact that the presence of selenium antioxidant 68 μg/kg and anthocyanins of 1.66 mg/100 g in salad onions was established, which is 1.5 and 2.3 times higher than the standard sample showed. The content of quercetin and other polyphenols was also noted. The cultivar is characterized by high agronomic stability (90%), product quality (88%), and productivity (49 tons per ha).
METHODOLOGICAL BASES OF SELECTION AND SEED GROWING OF VEGETABLE ROOT PLANTS
Authors: Fedorova M. I. , Soldatenko A. V. , Stepanov V. А. , Vetrova S. A. , Zayachkovskyi V. A. , Vjurtts T. S.
Published: July 2018

Vegetable root plants is a valuable, essential components of a balanced diet person. The basis of the modern methodology of breeding work on root crops is to meet the requirements of the market, so the breeders are faced with the task of creating varieties and hybrids of root crops with an attractive appearance and a sufficiently high nutritional value, suitable for new technologies of cultivation and processing. The regular meeting of the methodical Commission of the edible plants in the FSBSI Federal Scientific Vegetable Center in the framework of the international scientific-practical conference "Methodology of selection and seed growing of vegetable root plants." The conference was attended by scientists, breeders, seed growers, experts from Russia and CIS countries. The participants of the conference exchanged information on the achievements, development and application of various methodological approaches in the selection and seed production of vegetable root plants, contributing to the creation and introduction of domestic competitive varieties and hybrids, which will solve the problem of import substitution. The need to create a new source material on the basis of the collections of recent years for breeding on technology, alignment of the external parameters of varieties and hybrids of all vegetable root plants, as well as to improve the methods of seed production, especially for the reproduction of seeds of higher categories and lines of hybrids. The changed scientific and technological conditions of conducting the selection and seed-growing process require improving the efficiency of breeding development, the complexity of selection and genetic research, the use of biotechnological methods, MAS technologies, phytotrons, greenhouses and other facilities to accelerate the selection process.
PRODUCTIVITY OF THE GREENHOUSE TOMATO CULTURE IN THE LONG TURNOVER IN THE NORTH
Authors: Golovko T. К. , Dalke I. V. , Tabalenkova G. N. , Malyshev R. V. , Grygoray E. E.
Published: July 2018

The data on the greenhouse tomato culture productivity in the long turnover (February November) without application of artificial light are presented. The plants were grown using small-volume hydroponic technology on mineral wool in the industrial greenhouse of LLC "Prigorodny" (Syktyvkar, 61° 40′35″N, 50° 48′35″E). Tomato seeds (hybrid Starbuck F1) were sown in early December 2016. The seedlings were illuminated for 19 h daily with the high-pressure sodiumvapor reflector lamps (HPSV-400W / REFLUX) with an installed power of 130 W/m2. In early February 2017 plants at the age of 4245 days were transferred to the greenhouse and grown at density of 2 plants per square meter under natural lighting conditions. The dependence between the light intensity at leaf level and the natural light entering the greenhouse was studied. In spring sunny days, the light intensity at the level of the upper leaves did not exceed the 450500 μmol quanta/m2s, and in cloudy weather was 2-3 times lower. It was found that the saturation of leaf CO2-uptake by light took place at intensity of 800-1000 μmol quanta/m2s. The leaves formed under light deficiency had lowered photosynthetic activity (near 3 μmol СО2/m2s). The maximal productivity of tomato culture was observed during maximum light levels and sunny period (June-July). The average value of tomato productivity was about 34 kg/m2. The data show the possibility of producing commercial tomato yield in the first light zone without artificial lighting, which significantly reduces production costs.
The Changes In Calendars In The Ancient World As A Tool To Teach The Development Of Astronomy
Authors: Cohen Ariel
Published: July 2018

When teaching an introductory science survey course to college students learning astronomy at the Hebrew University of Jerusalem, Israel, we have devoted four hours to teaching the history of astronomy as a fruitful strategy to introduce important concepts surrounding the development of general scientific knowledge throughout history. In order to illustrate the impact of improved accuracy of astronomical measurements, we propose using the example the development of the calendars and, in particular, the widespread Hebrew calendars used throughout the adjacent Millennia of B.C. and A.C. The changes in the several determinations of the Hebrew calendar are demonstrated based on Babylonian and Jewish documents as well as works by al-Khwarizmi from the 9th century AD, found in the Khuda Bakhsh Oriental Library, in Patna India.  Our experience suggests that the teaching of calendar development and evolutions demonstrates the interconnectedness between scientific endeavors and social-religious traditions.
Corporeidade e fenomenologia: o corpo vivo e o corpo vivido de Petrúcia Nóbrega
Authors: Pereira Arliene Stephanie Menezes , Gomes Daniel Pinto
Published: July 2018

O presente texto apresenta a entrevista com a Professora Dra. Terezinha Petrúcia da Nóbrega, realizada em 03 de novembro de 2017 às 19:20 em Fortaleza, Ceará. A professora nos conta sobre sua trajetória acadêmica e suas aproximações com o pensamento da fenomenologia de Merleau-Ponty. Relata sobre algumas de suas obras, e suas experiências com o autor Bernard Andrieu na praia da Tambaba. Por fim nos faz um breve relato sobre sua visão acerca de uma educação sensível.
O pensamento de Gramsci, o ideário de inclusão social e educacional, e a formação do professor
Authors: Lima Lana Ferreira de
Published: July 2018

Esta é uma pesquisa bibliográfico-documental cujo objetivo principal é analisar as principais similitudes e diferenças existentes entre os princípios do sistema de racionalidade/normalidade, presente no ideário de inclusão social e educacional que se expressam nas políticas públicas gestadas até a década de 80 do século XX e aquelas elaboradas a partir dos anos 90, direcionadas para a formação de professores.
Gramsci: os intelectuais e a produção de teoria
Authors: Borges Regilson Maciel
Published: July 2018

O presente texto resulta de trabalho apresentado como pôster no Seminário de Estudos “Os Intelectuais e a Educação”, realizado de 19 a 23 de outubro na Faculdade de Educação da Unicamp, sob o tema “Gramsci e a Educação”. A intenção é apresentar resultado de leitura e fichamento realizada a partir dos Cadernos do Cárcere no item que trata acerca dos Intelectuais. Temas como o Estado Educador, os Intelectuais, Filosofia da Práxis, correspondem à fundamentação teórica da pesquisa que estamos desenvolvendo sobre Avaliação Educacional em Revista. Daí a relevância de Gramsci para nossa investigação.
Redemocratização e hegemonia: educação política e movimentos populares nos anos 1978-1989
Authors: Fraga Vitor Martins
Published: July 2018

Desde os anos 1960, muitos educadores populares atuaram no Brasil com “objetivos políticos”, buscando construir uma hegemonia popular alcançada “antes de conquistar o poder governamental”. Pretende-se pesquisar a contribuição dessa síntese fecunda entre educação e política nos movimentos populares para o declínio do regime autoritário e para o fortalecimento de um projeto popular de democracia, que disputou a hegemonia política nos anos 1978-1989, bem como analisar os desdobramentos, limites e possibilidades atuais desse projeto, através da consulta a documentos e fontes bibliográficas, além de entrevistas.
O professor de educação física na escola: os saberes para o ensino
Authors: Cesário Marilene , Reali Aline Maria de Medeiros Rodrigues
Published: July 2018

O artigo apresenta como questão norteadora: Qual a base de conhecimentos para a formação de professores de Educação Física? O objetivo visa analisar que conhecimentos são reconhecidos como importantes para a formação de professores de Educação Física, sob a perspectiva dos professores envolvidos no currículo. Foram entrevistados 11 professores de diferentes disciplinas e de diferentes centros de estudos da instituição que atuaram na primeira série do curso (ano 2005). Os resultados demonstram ênfase nos conhecimentos de conteúdo específico como necessários para a formação do professor de Educação Física, além de carência teórica sobre o que vem a ser essa base de conhecimentos para o ensino.
Rousseau: onde encontrar a educação
Authors: Silva Vagner
Published: July 2018

Rousseau costuma ser referido como um dos precursores da educação moderna. Porém, se a educação não for entendida apenas como uma conformação do homem à sociedade e suas leis, mas como uma transformação radical dos seres humanos, capaz de conduzi-los da barbárie à cultura, perceberemos que esta importância de Rousseau só é real enquanto o autor se mantém pessimista em relação à natureza humana, afirmando que esta é originalmente boa e que degenera entre os homens.
Kenyér és péksütemény fogyasztási szokások a gluténmentes diétában
Authors: Csapóné Riskó Tünde , Péntek Ádám
Published: July 2018

A cöliákia egy krónikus autoimmun rendelle­nesség. Világszinten 100 emberből 1, Magyar­országon a népesség 1-2 százaléka érintett. Az egyedüli lehetőség a betegséggel való együtt­élésre az élethosszig tartó szigorú gluténmen­tes diéta. Ez a búza, rozs, árpa, zab szigorú kiiktatását jelenti az étrendből. Hazánkban és a világ nagy részén a kenyér alapvetően glutén tartalmú gabonákból készül. A kenyér, a sós és édes péksütemények központi helyet foglal­nak el a magyar étkezési kultúrában. A glutén­mentes piac világszinten folyamatosan bővül. Gluténmentes élelmiszerekből, így kenyerek­ből, péksüteményekből és liszt keverékekből is egyre nagyobb a kínálat. Ezek a kenyerek, pék­sütemények és lisztkeverékek azonban össze­tételükben, megjelenésükben, állagukban, él­vezeti értékükben különböznek hagyományos társaiktól. Primer kutatásunkkal gluténmentes diétát folytatók gluténmentes kenyér és péksü­temény vásárlási és fogyasztási szokásait mér­tük fel. A kérdőív válaszaiból megállapíthattuk, hogy a gluténmentes diétát folytató válaszadók reggelije szinte mindig tartalmaz kenyeret. A válaszadóink 51,3 százaléka többnyire vásárol­ja a kenyeret és 62,8 százalékuk szokott glutén­mentes péksüteményeket is vásárolni. Vásárlá­saik során a szakboltokat részesítik előnyben. Továbbá megismerhettük azt is, hogy a vá­laszadóink ²⁄₃-a lojális valamely gluténmentes kenyér márkájához, valamint több, mint ¾-a lojális kenyérliszt keverékéhez. Amíg a glutén­mentes kenyér választékot elfogadhatónak gondolják, addig a péksütemény választékot nem tartják elfogadhatónak. Az árakat mind a kenyerek, mind a péksütemények esetében magasnak vélik.

JEL-kódok: I12, M31
GEOCHRONOLOGY AND HYDRODYNAMIC ENERGY CONDITIONS IN SURFACE COVERINGS OF LOW HOLOCENE FLUVIAL, FLUVIAL-MARINE, AND MARINE TERRACES: CLIMATIC PULSATIONS TO THE SOUTH OF THE ARANGUAGUÁ RIVER BASIN (SC)
Authors: Rubira Felipe Gomes , Perez Filho Archimedes
Published: July 2018

This research aims to perform the geochronology of surface coverings in low Holocene marine, fluvial-marine, and fluvial terraces, associating the genesis of paleo-forms with the occurrence of Holocene climatic pulsations, the consequential switches between hot-dry/hot-wet continental phases, and the retrograde and prograde movements of the oceanic coast due to eustatic sea-level fluctuations. At the same time, it aims to verify and correlate specific hydrodynamic energy conditions during past depositional events, responsible for preparing the levels of low fluvial, fluvial-marine, and marine terraces to the south of the Araranguá river (SC). The methodology was based in absolute dating through Optically Stimulated Luminescence (OSL) in quartz grains of the surface coverings of these low terraces and in granulometric tests with later data plotting and verification of sediment types, textural classes, and the respective paleo-hydrodynamic energy conditions, classified based on the textural diagram of Flemming (2000). Results of geochronological reconstruction corresponded to climatic events of switches between hot-dry/hot-wet environments and to global cooling periods identified by Bond et al. (1997, 2001) and Wanner et al. (2011). Three Holocene climatic pulsations were identified, which were determinant for the superficial organization of the landscape in the lower course of the Araranguá river and the oceanic plain of the Araranguá River Basin: Climatic pulsation I (6.000 ± 820 to 5.000 ± 620 Years B.P.), climatic pulsation II (2.700 ± 420 to 2.250 ± 300 Years B.P.) and climatic pulsation III (420 ± 65 to 215 ± 25 Years B.P.). The application of results in the textural diagram of Flemming (2000) allowed the differentiation of sedimentation environments, which were correlated with varied hydrodynamic energy regimes. Surface coverings of the low fluvial terrace (GS-I) and the alluvial materials of the low fluvial-marine terrace (GS-II) presented the highest mud content among all samples, which was correlated with moderate and moderate-to-high hydrodynamic energy transport flows. On the other hand, surface coverings of marine terraces (GS-III and GS-IV) and the marine sandy materials underlying alluvial deposits of the fluvial-marine terrace showed low levels of mud and high levels of sand, representing high- and very high-intensity hydrodynamic energy flows.
Plazas Vecinales de Cultura Física/Plazas de Deportes. “Templos laicos” de la ciudad batllista de Montevideo (1911-1918)
Authors: Scarlato García Inés
Published: July 2018

Se analiza el proyecto “Plazas Vecinales de Cultura Física” inaugurado en el año 1913 en Montevideo, liderado por el primer Presidente de la Comisión Nacional de Educación Física (CNEF), Juan Arturo Smith. Se analiza su inscripción en el marco de las políticas reformistas que impulsa el sector político liderado por José Batlle y Ordóñez durante las primeras dos décadas del siglo XX, y el lugar de estas plazas como nuevos “templos laicos” en la proyectada ciudad “batllista”. Se destacan elementos que se pretendieron distintivos y superadores respecto a los Playgrounds norteamericanos así como algunas de las influencias recibidas por el movimiento de Asociaciones Cristianas de Jóvenes norteamericano. Se trabaja con documentos y actas de sesión de la CNEF de su período fundacional (1911-1915).
RIDPHE_R: interlocuções latinoamericanas
Authors: Menezes Maria Cristina , Pinheiro Maria de Lourdes
Published: July 2018

Nessa nova edição da RIDPHE_R, Revista Iberoamericana do Patrimônio Histórico-Educativo, trazemos um número temático organizado pelas pesquisadoras Lucia Martinez Moctezuma, da Universidad Autónoma del Estado de Morelos, México, e Meily Assbú Linhales, da Universidade Federal de Minas Gerais, Brasil, com o tema “Educación Física en Iberoamérica: historia, memoria y patrimonio / Educação Física na Iberoamérica: história, memória e patrimônio. Para além do texto inicial, no qual as organizadoras trazem seus comentários sobre os textos que compõem o temático em questão, há para apreciação e deleite dos leitores mais nove artigos.
Deployment of NS-3 with Eclipse IDE
Authors: Vega-Sánchez José , Maygua-Marcillo Lesly , Urquiza-Aguiar Luis , Barbecho-Bautista Pablo
Published: July 2018

Network Simulators is typically used to study services and applications in complex scenarios due to the infeasibility of deploying real testbeds. Many problems can be solved by using network simulators such as NS-3. With this in mind, the aim of this article is to introduce new NS-3 users through detailed information. It is sometimes difficult to handle by new users the traditional manuals developed by NS-3 project official website. In this article, NS-3 for communication network and Eclipse Integrated Development Environment (IDE) for powerful programming language are integrated step-by-step, explaining the main features of these open source software packages and concluding with an example simulation. Our effort is to make it easy for a beginner to be part of the NS-3 research community and to maintain an open environment of knowledge.
Charged Dark Matters and Extended Standard Model
Authors: Hwang Jae-Kwang
Published: July 2018

The properties of the charged dark matters are discussed in terms of the new three-dimensional quantized space model. Because of the graviton evaporations, the very small Coulomb’s constant (k(dd)) of 10 −48 k and large gravitation constant (GN(dd)) of 106 GN for the charged dark matters at the present time are expected. The tentative values of G and k are used for the explanation purpose. Therefore, Fc(mm) > Fg(dd) > Fg(mm) > Fg(dm) > Fc(dd) > Fc(dm) = Fc(lq) = 0 for the proton-like particle. Also, the gravitation constant has been changed with increasing of the time because of the graviton evaporation. In the present work, the B1, B2 and B3 bastons with the condition of k(mm) = k >> k(dd) > k(dm) = 0 are explained as the good candidates of the dark matters. Also, the particle creation, dark matters and dark energy could be deeply associated with the changing gravitation constants (G). It is expected that the changing process of the gravitation constant between the matters from GN(mm) ≈ 1036 GN to GN(mm) = GN happened mostly near the inflation period. Therefore, during most of the universe evolution the gravitation constant could be taken as GN(mm) = GN. And the effective charges and effective rest masses of the particles are defined in terms of the fixed Coulomb’s constant (k) and fixed gravitation constant (GN). Then, the effective charge of the B1 dark matter with EC = −2/3 e is (EC)eff = −2/3·10−24 e. It is concluded that the photons, gravitons and dark matters are the first particles created since the big bang. The particles can be created from the decay of the matter universe and the pair production of the particle and anti-particle with decreasing of the gravitation constant (GN(mm)). Also, the weak force, strong force and dark matter force bosons are created from the interactions of the elementary particles with the T fluctuations of the vacuum energy.
Development of the Digital Competence in Secondary Education Teachers’ Training
Authors: Napal Fraile María , Peñalva-Vélez Alicia , Mendióroz Lacambra Ana María
Published: July 2018

Digital competence is one of the 8 key competences for life-long learning developed by the European Commission, and is requisite for personal fulfilment and development, active citizenship, social inclusion and employment in the knowledge society. To accompany young learners in the development of the competence, and to guarantee optimal implementation of ICTs, it is necessary that teachers are, in turn, literate. We had 43 Secondary School teachers in initial training to assess their own level of competence in the 21 sub-competences in 5 areas identified by the DIGCOMP project, using the rubrics provided in the Common Framework for Digital Competence of Teachers (Spanish Ministry of Education). Overall, pre-service teachers' conceptions about their level of Digital Competence was low (Initial). Students scored highest in Information, which refers mostly to the operations they performed while being students. Secondly, in Safety and Communication, excluding Protection of Digital Data and Preservation of the Digital Identity. Lowest values were achieved in Content Creation and Problem Solving, the dimensions most closely related with the inclusion of ICTs to transform teaching-learning processes. The knowledge or skills they exhibit are largely self-taught and, so, we perceive an urgent need to purposefully incorporate relational and didactic aspects of ICT integration.
Unraveling molecular determinants of manual therapy: an approach to integrative therapeutics for the treatment of fibromyalgia and CFS/ME
Authors: Espejo José Andrés , García-Escudero María , Oltra Elisa
Published: July 2018

Application of protocols without parameter standardization and rigorous controls has led manual therapy (MT) and other physiotherapy approaches to controversial outcomes. Thus, there is an urgency to carefully define standard protocols that elevate physiotherapy treatments to rigorous scientific demands. One way this can be achieved is by studying gene expression and additional physiological changes that associate to particular, parameter-controlled, treatments in animal models and translating this knowledge to properly design objective, quantitatively-monitored clinical trials. Here, we propose a Molecular Physiotherapy Approach (MPTA), requiring multidisciplinary teams, to uncover the scientific reasons behind the numerous reports of MT that historically attribute benefits to these treatments. The review focuses in the identification of MT-induced physiological and molecular responses that could be used for the treatment of fibromyalgia (FM) and CFS/ME. The systemic effect associated to mechanical-load responses is considered of particular relevance as it suggests that defined, low-pain areas could be selected for treatments with overall benefits, an aspect that might result essential to treat FM. Additionally, MT can provide muscle conditioning to sedentary patients without demanding strenuous physical effort, detrimental for CFS/ME patients, placing MT as a real option for integrative medicine programs to treat FM and CFS/ME.
Evaluation of the Structure of Urban Stormwater Pipe Network Using Drainage Density
Authors: Lee Jinwoo , CHUNG GUNHUI , Park Heeseong , Park Innjoon
Published: July 2018

In mega cities such as Seoul in South Korea, it is very important to protect the city from the flooding even for the short time of period due to the enormous amount of economic damage. In impervious area of the city, stormwater pipe network is commonly applied to discharge rainfall to the outside of catchment. Therefore, the stormwater pipe network in urban catchment should be carefully designed to discharge the runoff quickly and efficiently. In this study, different types of structures in stormwater pipe network were evaluated using the relationship between the peaks rainfall and runoff in urban catchments in South Korea. More than 400 historical rainfall events were applied in five urban catchments to estimate peak runoff from different type of network structures. Linear regression analysis was implemented to estimate peak runoffs. The coefficient of determination of the regressions were higher than 0.9 which means the regression model represent very well the relationship between the two peaks. However, the variation of the prediction becomes large as the peak rainfall increases and the variation become even larger when the network structure is branched. Therefore, it depends on the structure of stormwater pipe network. When the water paths in the pipe network is unique (branched network), the increased amount of rainfall is congested around the rainwater inlets and the uncertainty of peak runoff prediction is increased. If there are many possible water paths depending on the amount of discharge (looped network), the increased rainfall is discharged more quickly through the many water paths. This can be a way to represent the reliability of the stormwater pipe network. The structures of stormwater pipe network is evaluated using drainage density which is the length of pipes over the unit catchment area and 95% confidence interval. As a result, the 95% confidence interval is increased as the drainage density is increased because the accuracy of peak runoff prediction is decreased. As mentioned earlier, because the looped networks have many alternative water flowing paths, elimination time of rainfall from the catchments become short, the 95% confidence interval become narrow, and the reliability of peak runoff prediction become high. Therefore, it is beneficial to install looped stormwater pipe network within the affordable budget. It is important factor to determine the amount of complexity in stormwater pipe network to decrease the risk of urban flooding.
Effects of Boswellia serrata Roxb. and Curcuma longa L. in an In Vitro Intestinal Inflammation Model Using Immune Cells and Caco-2
Authors: Governa Paolo , Marchi Maddalena , Cocetta Veronica , De Leo Bianca , Saunders Philippa T. K. , Catanzaro Daniela , Montopoli Monica , Biagi Marco
Published: July 2018

Inflammatory bowel diseases, which consist of chronic inflammatory conditions of the colon and the small intestine, are considered a global disease of our modern society. Recently, the use of herbal therapies has increased in patients with inflammatory bowel diseases because of their effectiveness and better safety profile, compared to conventional drugs. Boswellia serrata Roxb. and Curcuma longa L. are amongst the most promising herbal drugs, however, their clinical use in inflammatory bowel diseases is limited and little is known on their mechanism of action. The aim of this work was to investigate the effects of two standardized extract of B. serrata and C. longa in an in vitro model of intestinal inflammation. Their impact on cytokine release and reactive oxygen species production, as well as the maintenance of the intestinal barrier function and on intestinal mucosa immune cells infiltration, has been evaluated. The extracts showed a good protective effect on the intestinal epithelium at 1 µg/ml, with C. longa having an anti-inflammatory mechanism of action and B. serrata acting as an antioxidant. In summary, these herbal products were demonstrated to be promising agents for the management of inflammatory bowel diseases by modulating in vitro parameters which have been identified in the clinical conditions.
Vitamin D Deficiency in Chronic Kidney Disease: Recent Evidence and Controversies
Authors: Franca Gois Pedro Henrique , Wolley Martin , Ranganathan Dwarakanathan , Seguro Antonio Carlos
Published: July 2018

Vitamin D (VD) is a pro-hormone essential for life in higher animals. It is present in few types of foods and is produced endogenously in the skin by a photochemical reaction. The final step of VD activation occurs in the kidneys involving a second hydroxylation reaction to generate the biologically active metabolite 1,25(OH)2-VD. Extrarenal 1α-hydroxylation has also been described to have an important role in autocrine and paracrine signaling. Vitamin D deficiency (VDD) has been in the spotlight as a major public health-care issue with an estimated prevalence of more than a billion people worldwide. Among individuals with chronic kidney disease (CKD), VDD prevalence has been reported to be as high as 80%. Classically VD plays a pivotal role in calcium and phosphorus homeostasis. Nevertheless, there is a growing body of evidence supporting the importance of VD in many vital nonskeletal biological processes such as endothelial function, renin-angiotensin-aldosterone system modulation, redox balance and innate and adaptive immunity. In individuals with CKD, VDD has been associated with albuminuria, faster progression of kidney disease and increased all-cause mortality. Recent guidelines support VD supplementation in CKD based on extrapolation from cohorts conducted in the general population. In this review, we discuss new insights on the multifactorial pathophysiology of VDD in CKD as well as how it may negatively modulate different organs and systems. We also critically review the latest evidence and controversies of VD monitoring and supplementation in CKD patients.
Compression and Tension Inversely Change Osteoprotegerin Expression via miR-3198 in Periodontal Ligament Cells
Authors: Kanzaki Hiroyuki , Wada Satoshi , Yamaguchi Yuuki , Katsumata Yuta , Itohiya Kanako , Fukaya Sari , Miyamoto Yutaka , Narimiya Tsuyoshi , Noda Koji , Nakamura Yoshiki
Published: July 2018

Background: Osteoclastic bone resorption in the compression zone of periodontal ligament (PDL) plays a role in orthodontic tooth movement, and is regulated by the balance of RANKL and OPG. Compression downregulates OPG, conversely, tension upregulates OPG in PDL cells. However, the regulatory mechanism of OPG expression in PDL cells under different mechanical stresses remains unclear. Methods: To study microRNA (miRNA) expression profiles, compression (2g/cm2) or tension (15%-elongation) was applied to immortalized human PDL (HPL) cells, and miRNA was extracted. The miRNA expression was analyzed using a human miRNA microarray, and the changes of the miRNA expression were confirmed by real-time RT-PCR. In addition, miR-3198-mimic and -inhibitor were transfected into HPL cells to understand the resulting OPG expression and production. Results: Certain miRNAs were expressed differentially under compression and tension. Some miRNAs including miR-3198 were upregulated only by compression. Real-time RT-PCR confirmed that compression induced miR-3198, but tension reduced it, in HPL cells. miR-3198-inhibitor upregulated and miR-3198-mimic reduced OPG in HPL cells. miR-3198-inhibitor rescued the compression-mediated downregulation of OPG. On the other hand, miR-3198-mimic reduced OPG expression under tension. Conclusion: We conclude that miR-3198 is upregulated by compression and is downregulated by tension, suggesting that miR-3198 downregulates OPG in response to mechanical stress.
Time-Resolved Emission Spectroscopy of Atomic and Molecular Species in Laser-Induced Plasma
Authors: Parigger Christian , Gautam Ghaneshwar , Helstern Christopher M
Published: July 2018

This work examines atomic and molecular signatures in laser-induced plasma in standard ambient temperature and pressure environments, including background contributions to the spectra that depend on the laser pulse-width.  Investigations include solids, gases, and nano-particles. Abel inversions of measured line-of-sight data reveal insight into the radial plasma distribution. For nominal 6 nanosecond laser pulses and for pulse-energies in the range of 100 to 800 milli-Joules, expansion dynamics and turbulence due to shock phenomena are elucidated to address local equilibrium details that are frequently assumed in spatially averaged emission spectroscopy. Chemical equilibrium computations reveal temperature dependence of selected plasma species. Specific interests include atomic hydrogen (H) and cyanide (CN). The atomic H spectra, collected following optical breakdown in ultra-high-pure hydrogen and 9:1 mixtures of ultra-pure hydrogen and nitrogen gases, indicate spherical shell structures and isentropic expansion of the plasma kernel over and above the usual shockwave. The recombination radiation of CN emanates within the first 100 nanoseconds for laser-induced breakdown in a 1:1 CO2:N2 gas mixture when using nanosecond laser pulses to create the micro-plasma. The micro-plasma is generated using 1064 nm, 150 mJ, 6 ns Q-switched Nd:YAG  laser radiation. Measurements of the optical emission spectra utilize a 0.64 m Czerny-Turner type spectrometer and an intensified charge-coupled device.
A New Sequence and its some Congruence Properties
Authors: Zhang Wenpeng , Lin Xin
Published: July 2018

The aim of this paper is to use the elementary method and the properties of the second kind Stirling numbers to study the congruence properties of a new sequence, which is closely related to Fubini polynomials and Euler numbers, and give some interesting congruences for it. This solves a problem proposed by the first author at an unpublished paper.
Evaporation Boundary Conditions for the Linear R13 Equations Based on the Onsager Theory
Authors: Beckmann Alexander Felix , Rana Anirudh Singh , Torrilhon Manuel , Struchtrup Henning
Published: July 2018

Due to failure of the continuum hypothesis for higher Knudsen numbers, rarefied gases and microflows of gases are particularly difficult to model. Macroscopic transport equations compete with particle methods, such as DSMC to find accurate solutions in the rarefied gas regime. Due to growing interest in micro flow applications, such as micro fuel cells, it is important to model and understand evaporation in this flow regime. Here, evaporation boundary conditions for the R13 equations, which are macroscopic transport equations with applicability in the rarefied gas regime, are derived. The new equations utilize Onsager relations, linear relations between thermodynamic fluxes and forces, with constant coefficients, that need to be determined. For this, the boundary conditions are fitted to DSMC data and compared to other R13 boundary conditions from kinetic theory and Navier-Stokes-Fourier (NSF) solutions for two one-dimensional steady-state problems. Overall, the suggested fittings of the new phenomenological boundary conditions show better agreement to DSMC than the alternative kinetic theory evaporation boundary conditions for R13. Furthermore, the new evaporation boundary conditions for R13 are implemented in a code for the numerical solution of complex, two-dimensional geometries and compared to NSF solutions. Different flow patterns between R13 and NSF for higher Knudsen numbers are observed.
The Applications of Promoter-Gene Engineered Bio-Sensors
Authors: Feng Yingzhu , Xie Zhangzhang , Jiang Xuanlong , Li Zhen , Shen Yuping , Wang Bochu , Liu Jianzhong
Published: July 2018

Promoter is a small region of DNA sequence in response to various transcription factors, which initiates a particular gene expression. The promoter-engineered bio-sensor can activate or repress gene expression through transcription factor recognizing specific molecules, such as polyamine, sugars, lactams, amino acids, organic acids or redox molecule, however, the reported applications of promoter enhanced bio-sensor are not too much. This review paper highlights the strategies of construction of promoter-gene engineered bio-sensor with human and bacteria’s genetic promoter array for high-throughput screening (HTS) molecular drugs, study of membrane protein’s localization and nucleocytoplasmic shuttling mechanism of regulating factor, enzyme activity, detection of the toxicity of intermediate chemicals, and probing bacteria density to improve value-added product titer. These bio-sensors’s sensitivity and specificity can be further improved by proposed approaches of Mn2+ and Mg2+ added random Error-prone PCR and site-directed mutagenesis which is applied for construction of bacteria’s “mutant library”. It is expected to establish flexible HTS platform (Bio-sensor array) to large-scale screen transcription factor-acting drugs, reducing the toxicity of intermediate compounds, and constructing gene dynamic regulatory system in “push and pull” mode to effectively regulate the valuable medicinal product production. This proposed novel promoter-engineered biosensors aided synthetic genetic circuit construction will maximize the efficiency of bio-synthesis of medicinal compound, which will greatly promote the development of microbial metabolic engineering and biomedical science.