Results 21 to 30 of about 2,918 (127)

Fine‐scale patterns of genetic structure in three species of forest birds reveal dynamic Pleistocene history within an Amazonian interfluve

Ibis, Volume 168, Issue 3, Page 972-984, July 2026.
Phylogeographical studies of Amazonian birds have revealed large intraspecific diversity, even within recognized areas of endemism. To understand the origin and organization of Amazonian diversity, including the influence of current and historical landscapes, we need to evaluate fine‐scale patterns of genetic diversity in relation to detailed ...
Affonso Henrique Nascimento de Souza, Camila Duarte Ritter, João Marcos Guimarães Capurucho, Juliana Menger, Camila Cherem Ribas   +4 more
wiley   +1 more source

Comparison between simplified and FE models for short-term deflection in continuous RC beams

Revista IBRACON de Estruturas e Materiais
In this work, a comparative study of different simplified methods and nonlinear finite element (FE) models used for calculating short-term deflections (vertical displacements of the longitudinal axis) in continuous reinforced concrete (RC) beams, under ...
E. JUNGES, H.L. LA ROVERE
doaj   +1 more source

When invasions go unnoticed: Public perception of the freshwater jellyfish Craspedacusta sowerbii in Europe

People and Nature, Volume 8, Issue 6, Page 1957-1973, June 2026.
Abstract Biological invasions are a major driver of biodiversity loss, yet inconspicuous or “cryptic” species often escape detection and public awareness, limiting management responses. We investigated the freshwater jellyfish Craspedacusta sowerbii, likely native to China and now present on six continents, through a 22‐month multilingual online survey
Guillaume Marchessaux, Kristína Slovák Švolíková, Barbora Števove, Ali Serhan Tarkan, Daniela Giannetto, Cristina Preda, Belma Kalamujić Stroil, Maciej K. Mańko, András Abonyi, Álmos Becz, Massimo Morpurgo, Evgeny A. Pakhomov, Levan Mumladze, Mar Bosch‐Belmar, Aino Hosia, Patricia Ventura, Jamileh Javidpour, Florian Lüskow   +17 more
wiley   +1 more source

Comportamento dos conversores comutados sob tensão nula com o indutor ressonante não linear

Eletrônica de Potência, 1996
A substituição do indutor ressonante linear por outro não linear, de maneira que o valor da indutância decresça com o aumento da corrente de carga, foi proposto para superar as dificuldades encontradas nos convemores comutados sob tensão nula Este ...
Ricardo Nederson do Prado
doaj   +1 more source

Reduced fecundity associated with Wolbachia infection in a Neotropical drosophilid Redução da fecundidade associada à infecção por Wolbachia em um drosofilídeo Neotropical

Ecological Entomology, Volume 51, Issue 3, Page 475-488, June 2026.
Using multiple infected and uninfected Drosophila sturtevanti lines, we investigated (i) the impact of Wolbachia on fecundity and (ii) its effects relative to antibiotic treatment. Based on over 1680 dissected ovaries, fecundity was similar between infected and uninfected flies.
Letícia Carlesso de Paula Sena, Marina Magalhães Moreira, Luísa de Paula Bouzada Dias, Jhonny José Magalhães Guedes, Karla Suemy Clemente Yotoko   +4 more
wiley   +1 more source

Numerical analysis of nonlinear behavior of steel-concrete composite structures

Revista IBRACON de Estruturas e Materiais
This paper presents the development of an effective numerical formulation for the analysis of steel-concrete composite structures considering geometric and materials nonlinear effects.
Í.J.M. LEMES, A.R.D. SILVA, R.A.M. SILVEIRA, P.A.S. ROCHA   +3 more
doaj   +1 more source

Reinicialização De Controladores Repetitivos Em Inversores PWM Sob Distúrbios Não-Periódicos: Análise E Projeto

Eletrônica de Potência, 2010
Embora inversores PWM com controle repetitivo apresentem um excelente desempenho em regime permanente sob cargas não-lineares cíclicas, eles não apresentam uma boa resposta dinâmica sob distúrbios não-periódicos. Então, esse artigo apresenta a análise e
Cassiano Rech, Leandro Michels, José Renes Pinheiro   +2 more
doaj   +1 more source

What Drives the Centralization or Decentralization of Network Governance? A Configurational Analysis in Different Health and Social Care Networks

Public Administration, Volume 104, Issue 2, Page 266-289, June 2026.
ABSTRACT Many studies have sought to identify the contingency factors of success in various network governance mechanisms. Despite the relevance of their results, the contingency factors that determine the establishment of specific governance forms remain unclear.
Eleonora Gheduzzi, Tie Cui, Maria Picco, Federica Segato, Stephen Osborne   +4 more
wiley   +1 more source

Fórmula de extrapolação para análise não-linear de estruturas de concreto armado.

Vetor, 2007
Neste trabalho aplica-se o método de Newton-Raphson em análise não-linear de estruturas de concreto armado. Para acelerar a convergência do método de Newton-Raphson modificado, são desenvolvidas três fórmulas de extrapolação de deslocamentos que são ...
José Milton de Araújo
doaj   +4 more sources

Finite Element Model for Nonlinear Analysis of Reinforced Concrete Beams and Plane Frames

Revista IBRACON de Estruturas e Materiais
In this work, a two-dimensional finite element (FE) model for physical and geometric nonlinear analysis of reinforced concrete beams and plane frames, developed by the authors, is presented.
R.S.B. STRAMANDINOLI, H.L. LA ROVERE
doaj   +1 more source