Results 21 to 30 of about 341,483 (211)
Conmutación simétrica de un rectificador trifásico versus convertidor AC/AC para la mejora del factor de potencia en microcentrales hidroeléctricas [PDF]
, 2018 En el presente artículo se realiza el análisis de un rectificador trifásico tipo puente con un interruptor en serie con la carga conmutado con ángulo simétrico.
Bory Prevez, Henry +1 more
core
AUGURAL TERRITORIES: On the Prophetic Organizing of the Mid‐range
International Journal of Urban and Regional Research, EarlyView.Abstract In this article I introduce the concept of augural territories to theorize the urbanism that emerged during pandemic lockdowns. I draw on ethnographic research in Madrid to examine how community‐based responses—including mutual aid networks, food pantries and neighbourhood associations—disrupted the spatial and temporal logics of territorial ...
Alberto Corsín Jiménez
wiley +1 more source
Revista Científica, 2014 Las lámparas fluorescentes compactas o CFL (compact fluorescent lamp) se han convertido en uno de los tipos de iluminación más usados en la actualidad.
Germán E. Melo +2 more
doaj +2 more sources
Conmutación simétrica del rectificador aplicado a microcentrales hidroeléctricas [PDF]
, 2018 En el presente trabajo se analizó un rectificador trifásico tipo puente con un interruptor en serie con la carga conmutado con ángulo simétrico, con respecto a los índices corriente eficaz, potencia activa, reactiva, aparente, de distorsión y factor de ...
Bory Prevez, Henry +2 more
core +1 more source
Journal of Sustainable Agriculture and Environment, Volume 5, Issue 1, March 2026.Conceptual model of depth‐stratified soil acidification under long‐term no‐till in temperate (Washington, USA) and tropical (Brazilian Oxisol) systems. Nitrogen inputs promote surface acidification (↓pH) and increased Al3+ activity, while lime or silicate amendments modify base cation dynamics. Increased DOC–Al complexation reduces free Al3+ and alters
Joao A. Antonangelo, Richard T. Koenig
wiley +1 more source
Plant Pathology, Volume 75, Issue 2, March–April 2026.An integrative biochemical and molecular survey of 344 soybean fields across Brazil revealed shifts in Meloidogyne species composition, high co‐occurrence rates, and the first report of M. enterolobii in commercial soybean fields, highlighting its geographic expansion and the need for improved nematode management strategies.
Francisco de Assis dos Santos Diniz +4 more
wiley +1 more source
Implementación de balastro con corrección de factor de potencia pasivo [PDF]
, 2006 En este documento se analiza funcionamiento de los balastros como fuente de alimentación de lámpara de gases, así como sus diferentes topologías, magnéticas y electrónicas, y la necesidad de usar circuitos de corrección de factor de potencia y ...
Betancourt Ramírez, Fernando Manuel +1 more
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A Magnetic‐Shunt‐Based Magnetic Structure for Coupled Inductor Filters
IET Power Electronics, Volume 19, Issue 1, January/December 2026.This article introduces a novel magnetic structure for coupled inductor filters that uses a low‐permeability ferrite polymer in the core gap. This design simplifies tuning the coupling for zero‐ripple input current, reduces the required number of winding turns, and increases power density. The proposed structure's effectiveness is validated through FEA
Christian Buzzio +4 more
wiley +1 more source
Análisis de armónicos variando en el tiempo en sistemas eléctricos de potencia con parques eólicos, a través de la teoría de la posibilidad [PDF]
, 2015 This paper focuses on the analysis of the connection of wind farms to the electric power system and their impact on the harmonic load-flow. A possibilistic harmonic load-flow methodology, previously developed by the authors, allows for modeling ...
Ratta, Giuseppe +3 more
core +2 more sources
Developmental Medicine &Child Neurology, Volume 68, Issue 1, Page e1-e15, January 2026.Intervenções de esportes modificados para crianças com Paralisia Cerebral: Resumo gráfico. Resumo Objetivo Avaliar a eficácia de uma intervenção de esportes modificados (Sports Stars Brasil) nos objetivos de participação em atividades físicas de lazer, desempenho e capacidade motora, funções corporais, níveis de atividade física, alfabetização física e
Ricardo R. Sousa Junior +7 more
wiley +1 more source