Results 21 to 30 of about 219 (124)

Tanque hidráulico experimental para cálculo de perda de carga em tubulações

Revista Eletrônica Científica da UERGS, 2016
O artigo descreve a construção de um tanque hidráulico para o cálculo da perda de carga em dutos cilíndricos retos e a execução dos ensaios. O tanque possui estrutura simples, baixo custo, robustez e versatilidade necessárias para a realização de ...
Renato Letizia Garcia, Daiane Acosta Falcão, José André Della Giustina Neto, Cristiane Cassales Pibernat, Jorge Rodolfo Zabadal   +4 more
doaj   +1 more source

Sodium alginate polymer as a kinetic inhibitor of methane hydrate formation

Journal of Materials Research and Technology, 2021
Gas hydrates are ice-like compounds that can affect the flow assurance in oil and gas pipelines due to their structural characteristics. Alginate is a polysaccharide naturally derived from the brown seaweed Phaeophyceae and is produced as an ...
Bárbara Louise Lemos Drumond Silva, Isabella Leite Ferraz, Dênis Fernandes do Nascimento, José Adilson de Castro, Letícia Vitorazi   +4 more
doaj   +1 more source

Aplicacao de Equacoes da Dinamica da Cavidade ao Modelo de Sacolas da Fisica de Particulas Elementares

Vetor, 2007
As equacoes da dinamica da cavidade para formacao de bolhas em fluidos podem ser aplicadas na analise dos modelos de sacola da Fisica de Particulas Elementares.
Gil Bazanini, Braz Edson Palladino
doaj   +4 more sources

A portable graphite calorimeter for onsite reference dosimetry and beam quality correction factor determination

Journal of Applied Clinical Medical Physics, Volume 26, Issue 12, December 2025.
Abstract Purpose To present a portable, reliable, and fast setup graphite calorimeter for onsite absolute dose measurements at hospitals. Methods We have designed and built a portable graphite calorimeter optimized for fast setup and accurate measurements at clinical centers. Our system has minimum readout and auxiliary electronics and is inserted in a
Nicolás Gómez‐Fernández, Jorge Deus‐Abreu, David Maughan, Faustino Gómez, Diego M. González‐Castaño   +4 more
wiley   +1 more source

The crucial role of meshing in computational fluid dynamics simulations for organic geometries in paleobiology: Describing fluid dynamics performance through best practices

Methods in Ecology and Evolution, Volume 16, Issue 10, Page 2170-2194, October 2025.
Abstract Computational fluid dynamics (CFD) has become an essential tool for studying fluid interactions in biological systems. While widely used in engineering, its application in the natural sciences, particularly in paleobiology, remains limited due to the challenges of meshing complex organic geometries.
Matheo López‐Pachón, Jordi Marcé‐Nogué   +1 more
wiley   +1 more source

Differential xylem phytohormone export from dry and wet roots during partial rootzone drying is independent of shoot‐to‐root transport in soybean

Physiologia Plantarum, Volume 177, Issue 3, May/June 2025.
Abstract Different phytohormones can act as root‐to‐shoot signalling molecules in response to soil drying. Recent findings suggest that root ABA levels are predominantly leaf‐sourced and not locally synthesized, thus, ABA exported from the roots in the xylem is mostly recycled from the shoot.
Jaime Puértolas, Pedro Castro‐Valdecantos, Alfonso Albacete, Ian C. Dodd   +3 more
wiley   +1 more source

Manipulation of Cancer Cell Spheroids by Photovoltaic Tweezers: Determination of Their Charge State

Advanced Photonics Research, Volume 6, Issue 4, April 2025.
Droplets containing spheroids of two cancer cell lines, MCF‐7 and U‐87‐MG, have been successfully manipulated by light‐induced electrical fields generated by photovoltaic tweezers. From the droplet dynamics, the charge state of the cell culture medium and the spheroids are obtained resulting in positively and negatively charged, respectively. Moreover,
Esther Rincón, Pablo Camarero, Marta Quintanilla, Angel Méndez, Angel García-Cabañes, Patricia Haro-González, Mercedes Carrascosa   +6 more
wiley   +1 more source

River Mouth Hydrodynamics: The Role of the Outlet Geometry and Transient Tidal and River Discharge Conditions on the Jet Structure

Journal of Geophysical Research: Oceans, Volume 130, Issue 1, January 2025.
Abstract The hydrodynamics of river mouths are the result of a complex interaction between river flow, tidal conditions, and outlet geometry. This complex interaction of factors shapes the jet that flows onto the continental shelf and influences the dynamics of these areas.
Antonio Ruiz‐Reina, Alejandro López‐Ruiz, Miguel Ortega‐Sánchez   +2 more
wiley   +1 more source

CFD Modeling of a Pitching Airfoil for the Estimation of the Performance Curve in an H‐Rotor Vertical Axis Wind Turbine

International Journal of Energy Research, Volume 2024, Issue 1, 2024.
In this work, the performance curve of a straight‐bladed vertical axis wind turbine (VAWT) is estimated through a CFD two‐dimensional modeling of a single airfoil under unsteady pitching motion. A typical URANS approach, with a k‐ω SST turbulence model and UDF functionalities, has been employed to simulate a fixed airfoil under variable inlet ...
Luis Santamaría, Jesús M. Fernández Oro, Pedro García-Regodeseves, Sandra Velarde-Suárez, Adrián Pandal, Payman Jalali   +5 more
wiley   +1 more source

Explorando a conexão entre a mecânica dos fluidos e a teoria cinética

Revista Brasileira de Ensino de Física
O entendimento das propriedades físicas dos fluidos permitiu diversos avanços tecnológicos. Como exemplo, merece destaque a fabricação de aviões, navios e carros com perfis otimizados, os quais diminuem dramaticamente a chamada força de arrasto.
Edson José Vasques, Paulo Menegasso, Mariano de Souza   +2 more
doaj   +1 more source