Results 41 to 50 of about 3,117 (111)

Simultaneous Generation of Topographic Models and Manning Roughness Coefficient Maps From Tri‐Stereoscopic Satellite Images: Application to the Huarmey River, Peru

The Photogrammetric Record, Volume 41, Issue 195, July‐September 2026.
Tri‐stereoscopic PeruSat‐1 imagery enables the simultaneous generation of 0.70 m‐resolution topography and spatially distributed Manning roughness maps, achieving 0.434 m vertical accuracy. Integrated into HEC‐RAS, these products provide consistent, high‐resolution inputs that improve hydraulic modelling and flood risk assessment in data‐scarce river ...
Jorge L. Miranda‐Pita, Pedro A. Plaza‐Álvarez, Jorge Lopez‐Rebollo, Diego González‐Aguilera   +3 more
wiley   +1 more source

Impacto socio-económico en el sector Sarayunga: Caso construcción hidroeléctrica “Minas San Francisco” en el periodo 2011-2016

Revista Tecnológica, 2017
El presente trabajo investigativo se encuentra enfocado en el análisis de los diferentes tipos de impactos tanto sociales como económicos que inciden en el desarrollo de la comunidad y que han surgido una vez iniciada la ejecución del proyecto ...
Alex Beshara Mora Farah, Anthony Zavala, Tatiana Sanchez   +2 more
doaj   +4 more sources

Diseño y cálculo de módulos para el restablecimiento hidrodinámico de la ciénaga de Mallorquín

Ciencia e Ingeniería, 2017
Para restablecer las condiciones hidrodinámicas de la Ciénaga de Mallorquín (CM) Se presentó el diseño, cálculo y aplicación de un módulo – modelo, denominado (DM2H), compuesto por tuberías de 28” y un caudal promedio de 0,40 a 0,80 m3/s, que cruzaron el
Jorge Rebolledo Colina, Iván León Luna
doaj  

Escoamento uniforme em canais circulares lisos. Parte I: adaptação e validação do método de Kazemipour Uniform flow in smooth circular channels. Part I: adaptation and validation of the Kazemipour method

Revista Brasileira de Engenharia Agrícola e Ambiental, 2004
A partir da equação de von Karman Prandtl para tubos pressurizados, Kazemipour & Apelt (1980) desenvolveram uma metodologia para cálculo do escoamento em canais circulares lisos, denominada método de Kazemipour o qual, apesar de apresentar resultados de ...
Maurício C. Goldfarb, Tarciso C. da Silva, Carlos A. V. de Azevedo   +2 more
doaj   +1 more source

MEJORAMIENTO DE LA EFICIENCIA EN EMBARCACIONES ''PARGUERAS'' ARTESANALES DEL CARIBE COLOMBIANO, A TRAVÉS DE LA MECANIZACIÓN DE LAS OPERACIONES DE PESCA

Revista U.D.C.A Actualidad & Divulgación Científica, 2013
En el Caribe colombiano existe una flota de embarcaciones artesanales denominadas ''pargueras'', consideradas las más desarrolladas de la región; no obstante, las operaciones de pesca se realizan manualmente, lo que implica mayor esfuerzo físico y ...
Harley Zúñiga, Jairo Altamar, Andrik Fernández   +2 more
doaj  

Multi-objective optimization of rural water supply system

Ingeniería del Agua, 2016
Lack of water in water supply systems forces people to take risk behaviors to health, which is very common in rural water supply systems (WSS-rural). The objective of this research was to develop and apply a multi-objective optimization model for WSS ...
W.T.P. Silva, L.T.Q. Vieira, D.M.S. Rosa, M.M. Campos, A.A. Santos, M.A.A. Souza   +5 more
doaj   +1 more source

Integrated Renewable Energy for Urban and Remote Communities: Hybrid Solutions with Hydro Pumped Storage and Green Hydrogen Opportunities

Advanced Sustainable Systems, Volume 10, Issue 5, May 2026.
Urban and remote communities face inefficiencies from centralized power grids. This study assesses hybrid renewable energy systems with storage, integrating pumped hydro and hydrogen. Through modeling and optimization, demand–supply balance improves. The base case achieves low LCOE, strong returns, and energy export potential.
Helena M. Ramos, J. E. Q. Fuentes, E. Bekçi, Oscar E. Coronado‐Hernández, Alban Kuriqi, Rui Castro, Modesto Pérez‐Sánchez   +6 more
wiley   +1 more source

AVALIAÇÃO DAS CARACTERÍSTICAS HIDRÁULICAS DO TUBO PERFURADO SANTAPE

Revista Brasileira de Engenharia Agrícola e Ambiental, 1999
RESUMO Foram determinadas as características hidráulicas do Santape, que trata-se de um tubo perfurado flexível de polietileno linear de baixa densidade, com orifícios a raio laser.
Albanise Barbosa Marinho, José Dantas Neto, Carlos Alberto Vieira de Azevedo, Hamilton Medeiros de Azevedo   +3 more
doaj   +1 more source

Diffusive Behavior and Statistical Evolution of Sediment Transport From DNS‐DEM and Stochastic Models

Water Resources Research, Volume 62, Issue 5, May 2026.
Abstract Sediment transport in rivers and channels can be understood as a diffusive phenomenon, where sediment particles separate as they move downstream. This diffusive behavior can be Fickian or anomalous (superdiffusive, subdiffusive, ballistic, etc.), depending on the time evolution of the sediment displacement variance.
Christian González, David H. Richter, Diogo Bolster, Joseph Calantoni, Cristián Escauriaza, Mark W. Schmeeckle   +5 more
wiley   +1 more source

Combined Effects of Land‐Use‐ and Climate‐Driven Stressors on Stream Fungi and Organic Matter Decomposition

Freshwater Biology, Volume 71, Issue 5, May 2026.
ABSTRACT Freshwater microbial communities sustain ecosystem functions and services, with aquatic fungi playing a key role in organic matter decomposition and nutrient transfer. However, the combined effects of multiple stressors on stream fungal biodiversity and functioning remain poorly understood.
Aida Viza, Encarnación Fenoy, Meritxell Abril, Mario Álvarez‐Cabria, Rebeca Arias‐Real, Christian Arnanz, José Barquín, Andreas Bruder, Red Calore, Íñigo Donázar, Isabel Fernandes, Antonio J. García‐Meseguer, Anna Lupon, Itxaso Martinez‐Sanz, Margarita Menéndez, Isabel Muñoz, Cláudia Pascoal, Marina Tomás‐Martín, Cayetano Gutiérrez‐Cánovas   +18 more
wiley   +1 more source