Results 51 to 60 of about 4,194 (163)

Adapted Volt-VAr Extremum-Seeking Method for Voltage Regulation and Loss Minimization in Low Voltage Distribution Networks

IEEE Access
The high penetration of Distributed Generation (DG) in the low-voltage distribution grid has raised several concerns in recent years, mainly regarding overvoltage at the buses caused by the reversal of active power flow.
J. H. S. Carvalho, W. M. Dos Santos, A. R. Almeida, B. F. S. Junior   +3 more
doaj   +1 more source

Single-phase Active Power Filters With Reduced Number Of Power Switches And Optimum Voltage Control Angle

Eletrônica de Potência, 2013
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 ...
Welflen R. N. Santos, Edison R. C. da Silva, Cursino B. Jacobina, Eisenhawer de M. Fernandes, Alexandre C. Oliveira, Rafael R. Matias, Dalton F. G. Filho, Otacilio M. Almeida, Patryckson M. Santos   +8 more
doaj   +1 more source

Efficient Fault Localization in Smart Grid Through Analysis of the Wave Matrix Image Using Convolutional Neural Networks

IEEE Access
This article presents a methodology for fault localization in electric power distribution systems through the analysis of wave matrix image using Convolutional Neural Networks (CNN).
Jose Carlos Filho, Francisco C. M. Abreu, Mauricio Silva, Fabbio Borges, Ricardo A. L. Rabelo   +4 more
doaj   +1 more source

Impacts of Hydroelectric Dams on Amazonian Fisheries: Assessing Functional Attributes in the Madeira River

River Research and Applications, Volume 41, Issue 7, Page 1493-1502, September 2025.
ABSTRACT The Madeira River is one of the main tributaries of the Amazon Basin, supporting over 1300 known fish species. Fisheries in this region play a critical role for riverine populations, serving as a primary source of income and sustenance. In 2011, the construction of the Jirau and Santo Antônio hydroelectric dams (HEDs) was completed along the ...
Ana Laura Monteiro de Souza, Rogério Fonseca, Rangel Eduardo Santos, Raniere Garcez Costa Sousa, Felipe Micali Nuvoloni, Isys Nathyally de Lima Silva, Karen Sayuri Takano, Fabrício Berton Zanchi   +7 more
wiley   +1 more source

Identification of Parkinson’s Disease Through Facial Image Classification: A Systematic Review

IEEE Access
Parkinson’s Disease (PD) is one of the most prevalent neurological conditions, affecting a significant portion of the elderly population worldwide.
Jose Nazareno Alves Rodrigues, Rodrigo De Melo Souza Veras, Laurindo De Sousa Britto Neto, Pedro Henrique Ximenes Ramalho Barros, Wilana Da Silva Moura, Kelson James Silva De Almeida, Kelson Romulo Teixeira Aires   +6 more
doaj   +1 more source

Análise Em Regime Permanente Do Filtro Ativo Universal

Eletrônica de Potência, 2013
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.
Rafael R. Matias, Cursino B. Jacobina, Alexandre C. Oliveira, Welflen R. N. Santos   +3 more
doaj   +1 more source

Identification of Functional Cellular Markers Related to Human Health, Frailty and Chronological Age

Aging Cell, Volume 24, Issue 9, September 2025.
Human skin fibroblasts in vitro preserve the memory of age and health. ABSTRACT Aging leads to a decline in physiological reserves, an increase in age‐related diseases, reduced functional ability and a shortened healthspan. While molecular markers of chronological aging exist, their link to general health and intrinsic capacity (IC), a composite ...
Chloé Brodeau, Camille Joly, Anaïs Chekroun, Jean Nakhle, Vincent Blase, Nicolas Espagnolle, Cédric Dray, Armelle Yart, Valérie Planat, Margot Tertrais, Julien Fassy, Sophie Guyonnet, Wan‐Hsuan Lu, Philipe de Souto Barreto, Olivier Teste, Marie Tremblay‐Franco, Kamaryn T. Tanner, Alan A. Cohen, Audrey Carriere, Louis Casteilla, Isabelle Ader, IHU HealthAge/Open Science group   +21 more
wiley   +1 more source

Atividade de lipase em quimo de três espécies tropicais de peixes Teleostei de água doce

Revista Brasileira de Zootecnia, 2000
RESUMO - O objetivo do presente trabalho foi avaliar a atividade de lipase no quimo dos intestinos médio e posterior de três espécies de peixes Teleostei, com hábitos alimentares diferentes, piracanjuba (Brycon orbignyanus), piau (Leporinus friderici ...
José Teixeira Seixas Filho, Maria Gorethi A. Oliveira, Juarez Lopes Donzele, Andréa T. M. Gomide, Eliane Menin   +4 more
doaj  

Enhanced Pollen Classification via Hybrid Neural Network With Attention Mechanism and View Separation: An Equatorial and Polar Approach

IEEE Access
Accurate classification of pollen grains is crucial for various fields, including ecology and food engineering. However, current approaches often face challenges due to limited data and the morphological variability of pollen grains.
Julio Cesar da Silva Soares, Kelson Romulo Teixeira Aires, Juliana do Nascimento Bendini, Wesley Vitor Barbosa Brandao, Rodrigo de Melo Souza Veras   +4 more
doaj   +1 more source

External Morphology of Leporinus oliveirai (Characiformes: Anostomidae) During Early Life Stages

Journal of Morphology, Volume 286, Issue 7, July 2025.
Herein, we describe the early development of Leporinus oliveirai, a recently described species, documenting its external morphology with photographs and illustrations. The ontogeny of L. oliveirai is compared with other anostomids and developmental patterns are described for the family.
Ian Solon Bortoloci Ito, Mariana Pascoal Boaretto, Marcos Venturieri, Andréa Bialetzki, José Luís Olivan Birindelli   +4 more
wiley   +1 more source