Results 41 to 50 of about 9,841 (69)

Interactions Between Dissolved Organic Carbon and Aluminium Activity in Tropical and Temperate No‐Till Agroecosystems

open access: yesJournal 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

Conexão de Veículos Elétricos à Rede de Energia Elétrica para Recarga de Baterias: Uma Visão Geral

open access: yesEletrônica de Potência, 2014
Este artigo apresenta uma compilação, de natureza tutorial, de informações relacionadas às atuais formas de conexão de veículos elétricos (VEs) ao sistema de distribuição de energia elétrica para recarga de baterias.
Márcio do C. B. P. Rodrigues   +4 more
doaj   +1 more source

Fetoscopic laser ablation vs standard management for Type‐II and Type‐III vasa previa

open access: yesUltrasound in Obstetrics &Gynecology, Volume 67, Issue 3, Page 320-328, March 2026.
ABSTRACT Objective The standard management (SM) for vasa previa (VP) includes antepartum inpatient admission at 28–32 weeks' gestation followed by Cesarean delivery at 34–37 weeks. Case reports and case series have reported on fetoscopic laser ablation (FLA) as an alternative management approach for Types‐II and ‐III VP.
S. Backley   +11 more
wiley   +1 more source

Proposta De Um Sistema Fotovoltaico De Dois Estágios Conectado À Rede Elétrica Comercial

open access: yesEletrônica de Potência, 2007
O artigo apresenta o estudo, implementação e resultados experimentais de um sistema fotovoltaico conectado à rede elétrica, composto por um conversor CC-CC elevador, operando com comutação suave, e um inversor ponte completa (Full-Bridge).
Kleber C. A. de Souza   +2 more
doaj   +1 more source

The Changing Landscape of Root‐Knot Nematodes in Brazilian Soybean Fields: Shifting Prevalence of Meloidogyne arenaria, M. incognita and M. javanica and the Occurrence of an Emerging Species, M. enterolobii

open access: yesPlant 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

Comportamento Dinâmico Do Gerador De Indução Com Dupla Alimentação Orientado No Fluxo Estatórico

open access: yesEletrônica de Potência, 2006
Este artigo analisa o impacto da banda passante dos controladores PI de eixo q e d no comportamento dinâmico do Gerador de Indução com Dupla Alimentação (GIDA) orientado no referencial do fluxo estatórico.
Jean Patric da Costa   +3 more
doaj   +1 more source

The Role of the European Union in Managing African Crises Between Development Aid and Geopolitical Interests

open access: yesWorld Affairs, Volume 189, Issue 1, Spring 2026.
ABSTRACT This study conducts a comprehensive and critical examination of the interplay between development assistance and strategic geopolitical objectives in the European Union's (EU) engagement with African crises. Although the EU positions itself as a normative power committed to advancing peace, development, and human rights, its practices often ...
Edmond Chick   +1 more
wiley   +1 more source

Panorama das Estratégias de Armazenamento de Energia sob Forma de Ar Comprimido

open access: yesEletrônica de Potência, 2016
O armazenamento de energia sob a forma de ar comprimido (CAES) vem sendo explorado há décadas, principalmente por meio de sistemas de grande porte. A evolução destes sistemas deu-se com base em melhorias no gerenciamento térmico das etapas de compressão
Marcos A. Salvador   +2 more
doaj   +1 more source

A Magnetic‐Shunt‐Based Magnetic Structure for Coupled Inductor Filters

open access: yesIET 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

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