Results 61 to 70 of about 849 (170)

Criopreservação do sêmen testicular do teleósteo piau-açu Leporimus macrocephalus

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2003
Avaliaram-se metodologias de criopreservação para o sêmen do piau-açu Leporinus macrocephalus (Teleostei, Anostomidae). O volume de sêmen coletado diretamente dos testículos de seis peixes (446,7±165,1g de peso corporal) foi de 0,4±0,2 ml. Testou-se a toxicidade dos crioprotetores dimetilsulfóxido (DMSO), dimetilacetamida, propilenoglicol ...
Ribeiro, R.I.M.A., Godinho, H.P.
openaire   +3 more sources

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

ASPECTOS REPRODUTIVOS DE Leporinus piau FOWLER, 1941 (OSTEICHTHYES, ANOSTOMIDAE) DA BACIA DO RIO SÃO FRANCISCO, SUBMETIDO À DESOVA INDUZIDA

Ciência Animal Brasileira, 2009
Leporinus piau Fowler, 1941, é importante como peixe forrageiro e na pesca da bacia do São Francisco. Fêmeas dessa espécie foram submetidas à desova induzida, mediante a aplicação de duas doses de extrato bruto de hipófise de carpa-comum (EBHC) (0,5 e 5 ...
Edson Vieira Sampaio, Yoshimi Sato
doaj   +1 more source

Genetic divergence between soybean cultivars grown in the Cerrado in Southwestern Piau, Brazil

African Journal of Agricultural Research, 2016
Knowing plant traits and their contribution to genetic diversity is key to identify favorable genotypes and breed new cultivars. This article aims to describe and quantify the genetic divergence between soybean cultivars grown in the Cerrado in southwestern Piaui, Brazil, and identify favorable genotypes for hybridization.
de Oliveira Sousa Tiago, Vieira Chaves Daniela, Heberle Elaine, Hamilton da Costa Filho Jose, Silva Santana Farley, Roberto Barbosa Monteiro Carlos, de Sa Ferreira Rodrigo, Eugenia Lima dos Santos Maria   +7 more
openaire   +2 more sources

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

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

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

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

Effect of rates and forms of nitrogen splitting on corn in the Brazilian Cerrado of Piau State

African Journal of Agricultural Research, 2014
Zea mays crop has been standing out in the Brazilian Cerrado of Piaui State, located in the Northeastern Brazil. However, despite the high technology level utilized, yield levels are still below the expectation, mainly due to the mismanagement of nitrogen (N). This experiment was conducted in field using single-cross hybrid 30F53 from Pioneer®.
Ferreira Lustosa Filho Jos, Csar Azevedo Nbrega Jlio, Simo Abraho Nbrega Rafaela, Ribeiro Andrade Fabrcio, Pereira Pacheco Leandro, Chcara Pires Luana, Martins de Aquino Jssika   +6 more
openaire   +2 more sources

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