Results 41 to 50 of about 2,306 (177)

ESTUDO REOLÓGICO DE UM FLUIDO DE PERFURAÇÃO COM CARACTERÍSTICAS BIODEGRADÁVEIS A BASE DE TENSOATIVO NP40 E ÓLEO DE CANOLA

Holos, 2020
A perfuração de poços é um dos pilares na exploração de petróleo, é o elo entre a superfície e o reservatório, e uma parte vital da perfuração é o fluido utilizado que deve se mostrar eficiente no processo.
Anderson Shimenes Lacerda Soares, Alfredo Ismael Curbelo Garnica, Fabíola Dias da Silva Curbelo   +2 more
doaj   +1 more source

Second‐Law Analysis of Mini/Micro Counterflow Parallel‐Plate Heat Exchangers: Optimizing Effectiveness by Minimizing Wall Entropy Production

Heat Transfer, Volume 54, Issue 7, Page 4536-4554, November 2025.
ABSTRACT We present an analytical and numerical study of the entropy production rate in laminar counterflow parallel‐plate heat exchangers, aiming to investigate the interplay between multidimensional wall conduction, entropy production, and the optimum wall conductivity that leads to maximum effectiveness.
Santiago E. Ibáñez, Alberto E. Quintero, Marcos Vera   +2 more
wiley   +1 more source

Cálculo de la viscosidad real de melazas (fluido no newtoniano) de ingenios de Tucumán [PDF]

Revista Industrial y Agrícola de Tucumán, 2017
La melaza se comporta como un fluido no newtoniano, es decir: no existe una relación constante entre el esfuerzo y la velocidad de rotación debido a características propias de su composición (contenido de gomas, polisacáridos, etc.); por ello, la ...
Gimena del H. Zamora Rueda, Romina A. Salazar, Marcelo Ruiz   +2 more
doaj  

Thermodynamic classification of vapor and liquid dominated reservoir and fluid geochemical parameter calculations

Geofísica Internacional, 1997
Se presenta una definición termodinámica para clasificar los yacimientos geotérmicos en vapor o liquido-dominantes. El yacimiento vapor-dominante contiene un volumen específico de fluido (de vapor y liquido conjunto) mayor que el volumen crítico del agua,
Mahendra P. Verma
doaj   +1 more source

Fluido no newtoniano

Ingenia Materiales, 2019
En los fluidos no newtonianos, la viscosidad varía con la temperatura y la presión y no siguen la Ley de Viscosidad de Newton. A pesar de que un fluido no newtoniano puede hacerse de múltiples sustancias y de que podemos encontrarlo en el día a dia (como el kétchup o la pasta de dientes), hemos escogido hacerlo de maicena y agua.
Hernández, S., Alarcón, P., Vaquero, A., Collado, S.   +3 more
openaire   +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

Escribir en comunidad: Construcción de relaciones y responsabilidad en la producción de conocimiento

American Anthropologist, Volume 127, Issue 3, Page 447-465, September 2025.
ABSTRACT As anthropology reckons with its past, present, and future, anthropologists increasingly seek to challenge inequities within the discipline and academia more broadly. Anthropology, regardless of subdiscipline, is a social endeavor. Yet research often remains an isolating (though not necessarily solitary) process, even within research teams and
Jordi Armani Rivera Prince, Emily M. Blackwood, Madeleine Landrum, Emily B. P. Milton, Elizabeth L. Rodgers, Monica Barnes, Elizabeth Chin, Christa Craven, Kristina Douglass, María José Figuerero Torres, María A. Gutiérrez, Sarah Herr, Lisa Hodgetts, Kirk A. Maasch, Kylie E. Quave, Danilyn Rutherford, Daniel H. Sandweiss   +16 more
wiley   +1 more source

Superstability of micrometre jets surrounded by a polymeric shell

Journal of Applied Crystallography, Volume 58, Issue 4, Page 1261-1268, August 2025.
Superstable micrometre compound jets have been produced for serial femtosecond X‐ray crystallography.We have produced superstable compound liquid microjets with a 3D‐printed coaxial flow‐focusing injector. The aqueous jet core is surrounded by a shell, a few hundred nanometres in thickness, of a low‐concentration aqueous solution of a low‐molecular ...
A. Rubio, J. M. Montanero, M. Vakili, F. H. M. Koua, S. Bajt, H. N. Chapman, A. M. Gañán-Calvo   +6 more
wiley   +1 more source

High‐Quality Epitaxial Five‐Layer Aurivillius Films with In‐Plane Ferroelectricity for Electrocaloric Cooling

Advanced Electronic Materials, Volume 11, Issue 11, July 2025.
High‐quality epitaxial five‐layer Sr2Bi4Ti5O18Aurivillius films are grown on SrTiO3 by pulsed laser deposition. The electrocaloric effect derived from measurements of the in‐plane ferroelectric polarization reveals a maximum temperature change of ΔT ∼ 0.95 °C under an electric field of 150 kV cm⁻¹ at 135 °C.
Sara Lafuerza, Javier Blasco, Marco Evangelisti, Gloria Subías, David Gracia, José Á. Pardo, Eduardo Barriuso, Xavier Torrelles, Jessica Padilla‐Pantoja, José M. Caicedo, José Santiso   +10 more
wiley   +1 more source

Efeito da goma xantana e da bentonita no desempenho de um fluido de perfuração base microemulsão

Holos, 2020
Os fluidos de perfuração microemulsionados são uma nova tecnologia que objetiva substituir os fluidos base óleo e base água, por possuir alta lubricidade, estabilidade, baixa toxicidade, baixo custo e menor perda de fluido. Assim, este trabalho teve como
Roxana Pereira Fernandes de Sousa, Fabíola Dias da Silva Curbelo, Alfredo Ismael Curbelo Garnica, Elayne Andrade Araújo, Júlio Cézar de Oliveira Freitas, Glauco Soares Braga   +5 more
doaj   +1 more source