Results 61 to 70 of about 413,788 (250)

Resultados de simulações de um filtro activo paralelo com controlo baseado na teoria p-q [PDF]

, 2003
O presente artigo descreve um filtro activo paralelo com sistema de controlo baseado na teoria p-q, e apresenta resultados de simulações que mostram sua operação com diferentes tipos de cargas. Primeiramente a teoria p-q, e a sua aplicação no controlo de
Afonso, João L., Couto, Emílio F., Martins, Júlio S.   +2 more
core  

Comparison of drone and ground surveys for the detection of a rare plant in a fragile ecosystem

Ecological Solutions and Evidence, Volume 7, Issue 1, January–March 2026.
We compared the accuracy, time, and financial costs of drone and ground surveys for the detection of wood lilies (Lilium philadelphicum) in an endangered alvar ecosystem. We found that the drone surveys detected 73%–78% of the plants found in the ground surveys, but that this type of survey was more expensive and time consuming than the ground survey ...
Ana Hernández Martínez de la Riva, Koreen Millard, Murray Richardson, Joseph Bennett   +3 more
wiley   +1 more source

Dispositivo todo-fibra para el filtrado óptico [PDF]

, 1987
Mediante la concatenación de varios estrechamientos, realizados sobre una misma fibra, es posible implementar un filtro paso ...
Martín Pereda, José Antonio, Muriel Fernández, Miguel Ángel, Rodriguez Horche, Paloma   +2 more
core  

Trait‐based species selection for restoration: A case study from tropical landscapes dominated by bracken

Journal of Applied Ecology, Volume 63, Issue 1, January 2026.
Our results can be used by stakeholders to select the species best suited for active restoration projects in bracken‐dominated areas throughout the tropical region. Furthermore, our trait‐based approach, which considers seedling performance in disturbed areas, can serve as a guide for species selection in restoration programmes in other disturbed ...
Silvia C. Gallegos, Cecilia L. López, Kazuya Naoki, Andrea Soliz, Alfredo F. Fuentes, Cesar Mayta, Leslie Cayola, J. Sebastian Tello, Isabell Hensen   +8 more
wiley   +1 more source

Adubação fosfatada com torta de filtro, fosfato natural e biofertilizantes em ultisol (argissolo) [PDF]

Ciencia del Suelo, 2018
O uso de biofertilizante combinado com composto orgânico e fontes naturais de fósforo pode resultar em maior eficiência da adubação. Objetivou-se avaliar o efeito da torta de filtro associada com fosfato natural de rocha e biofertilizantes, sobre a ...
Gustavo Caione, Leónides Castellanos González, Renato de Mello Prado, Alfredo Reyes Hernández, Leandro Rosatto Moda, Enrique Parets Selva, Ely Nahas   +6 more
doaj  

Diseño y simulación de un sistema de filtro activo híbrido para la supresión de armónicos en un sistema de conversión AC/DC [PDF]

, 2008
Mediante el desarrollo del presente proyecto se quiere mostrar por medio de simulaciones la efectividad y viabilidad en la implementación de un sistema de filtro activo híbrido para la eliminación de armónicos en un sistema de conversión ac/dc con ...
Bedoya Salazar, Andrés Felipe, Ramírez Giraldo, Jorge Mario   +1 more
core  

Ecological function over evolutionary legacy: The limited role of shared evolutionary history in shaping modern frugivory interactions

Functional Ecology, Volume 39, Issue 12, Page 3688-3703, December 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Frugivory, encompassing interactions between vertebrates and plants that range from mutualistic to antagonistic, drives seed dispersal and underpins the structure and resilience of tropical ecosystems.
Lisieux Fuzessy, Miguel Verdú, Marco Aurelio Pizo   +2 more
wiley   +1 more source

Efeito do substrato e da temperatura na germinação de sementes de cataia (Drimys brasiliensis). [PDF]

, 2011
O objetivo deste trabalho foi avaliar a germinação de sementes de cataia (Drimys brasiliensis) sob diferentes temperaturas e tempos de estratificação.
ABREU, D. C. A. de, MEDEIROS, A. C. de S., NOGUEIRA, A. C.   +2 more
core  

Disentangling seed availability and establishment filters at alpine treelines through a decade‐long field manipulation

Journal of Ecology, Volume 113, Issue 12, Page 3830-3844, December 2025.
Treeline advance under warming occurs only when multiple filters align—adequate seed supply, favourable microclimatic windows, moderated herbivory and shrub effects that remain facilitative rather than competitive. Abstract Climate warming is expected to increase upslope shifts of alpine treelines globally.
Wentao Lin, Eryuan Liang, J. Julio Camarero   +2 more
wiley   +1 more source

To Ban or Not to Ban: The UK's Hamlet Moment With Farm Antibiotics

Politics &Policy, Volume 53, Issue 6, December 2025.
ABSTRACT This article applies the Multiple Streams Framework (MSF) to examine post‐Brexit antimicrobial resistance (AMR) governance in UK agriculture, focusing on the contested regulation of prophylactic antibiotic use in farm animals. The study reveals how Brexit created a structural policy window, yet political and ideological dynamics rendered it ...
George Asiamah
wiley   +1 more source