Results 31 to 40 of about 2,836 (134)

Membrane Semi‐Permeability and Ion Selectivity in Chemiosmosis: Open Systems Volume Dependence of Electrolyte Chemistry

open access: yesAdvanced Materials Interfaces, Volume 13, Issue 4, 17 February 2026.
Very small cellular compartments can break electroneutrality and harness proton gradients without active transport structures, whereas larger volumes cannot, underscoring why life's critical energy processes are confined in microscopic spaces. ABSTRACT The effect of pH changes in external ionic solutions on liposomes entrapping non‐permeable weak acid ...
Josep M. Ribó   +4 more
wiley   +1 more source

A construção do conceito de neurose (I). Os vapores e os nervos

open access: yesRevista Latinoamericana de Psicopatologia Fundamental
Desde que Th. Willis enunciara sua idéia de enfermidade nervosa, numerosos transtornos mutantes, cambiantes e passageiros com polimorfas manifestações psíquicas e motoras foram atribuídas à existência de “vapores” e posteriormente a alterações dos ...
Jorge J. Saurí
doaj   +1 more source

Simulación del proceso precipitación-escorrentía con paso diario: comparación de los modelos GR4J, SWAT y random forest

open access: yesRibagua, 2023
RESUMENUn sólido estudio hidrológico diario es una tarea desafiante en regiones caracterizadas por una alta variabilidad hidro-climática, como Uruguay. Por esta razón, los modelos hidrológicos de base física de diferentes escalas temporales y espaciales (
Federico Vilaseca   +4 more
doaj   +1 more source

Hydrogen Permeation in Polyethylene: Effect of Crystallinity on Gas Transport Coefficients at Different Temperatures

open access: yesJournal of Polymer Science, Volume 64, Issue 3, Page 608-621, 1 February 2026.
Correlation of H2 permeability in semicrystalline polymers used as liners in Type IV composite tanks, versus temperature and crystallinity. ABSTRACT Semicrystalline polymers such as high‐density polyethylene (HDPE) are increasingly adopted as liners in compressed hydrogen storage tanks, due to low weight, easy processing, and high durability, together ...
Lorenzo Merlonghi   +3 more
wiley   +1 more source

Desarrollo de un modelo de cálculo para la determinación de las curvas de trabajo de la bomba centrífuga ПƂ 160/40

open access: yesCiencia & Futuro, 2018
Se obtuvo un modelo de cálculo para la determinación de las curvas de trabajo de la bomba centrífuga ПƂ 160/40. A partir del método propuesto por Stepanoff, que incluye el empleo de coeficientes experimentales, se desarrolló un método analítico para el ...
Luis E. Sablón-Fernández   +1 more
doaj  

Enlazando escalas en un reactor químico: de la microescala a la simulación global

open access: yesEducación Química
Este artículo discute los elementos, la descripción matemática y las herramientas de cómputo empleadas para el estudio y diseño de reactores químicos, haciendo énfasis en reactores agitados continuos.
Sergio Antonio Baz-Rodríguez   +2 more
doaj   +1 more source

Acoustic measurements of a liquefied cohesive sediment bed under waves [PDF]

open access: yesAdvances in Geosciences, 2014
In this article the response of a cohesive sediment deposit under the action of water waves is studied with the help of laboratory experiments and an analytical model.
R. Mosquera, V. Groposo, F. Pedocchi
doaj   +1 more source

Application of Gamification Mechanics to Computational Fluid Dynamics Seminars Using Genially

open access: yesComputer Applications in Engineering Education, Volume 34, Issue 1, January 2026.
ABSTRACT This work describes the procedure for the gamification of Computational Fluid Dynamics (CFD) seminars, with the aim of increasing student motivation and simplifying the learning and acquisition of skills related to the use of CFD tools. The seminar activity is divided into two parts: (i) autonomous work along the semester, in which students ...
Gema Gómez‐Pozuelo   +2 more
wiley   +1 more source

Using a statistical efficiency methodology for predictors’ selection in the bedload transport problem: A high gradient experimental channel case

open access: yesAlexandria Engineering Journal, 2022
Bedload transport rates for high-gradient gravel bed rivers has been studied through a physical model that replicated the typical features of these channels.
Veronica Carrillo   +7 more
doaj   +1 more source

Blockchain‐Based AI Intelligent Systems in Healthcare: A Decentralized Federated Learning Framework With Zero Trust

open access: yesInternational Journal of Intelligent Systems, Volume 2026, Issue 1, 2026.
Artificial intelligence (AI), blockchain (BC), and federated learning (FL) offer significant potential for strengthening data privacy, security, and decentralized decision‐making in healthcare. However, healthcare AI systems remain vulnerable to adversarial threats, including data poisoning, Byzantine behavior, Sybil attacks, and unauthorized access ...
Martin Wynn   +5 more
wiley   +1 more source

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