Results 31 to 40 of about 288,625 (220)

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

Universal restrictions to the conversion of heat into work derived from the analysis of the Nernst theorem as a uniform limit

open access: yes, 2003
We revisit the relationship between the Nernst theorem and the Kelvin-Planck statement of the second law. We propose that the exchange of entropy uniformly vanishes as the temperature goes to zero. The analysis of this assumption shows that is equivalent
  +27 more
core   +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

Previsão do comportamento termo-reológico de fluidos viscoelásticos durante o escoamento em canais de geometria complexa [PDF]

open access: yes, 2004
Pretende-se com o presente estudo aprofundar o conhecimento e apurar a sensibilidade necessária para lidar mais eficientemente com problemas reais, nomeadamente nas áreas de Extrusão e da Injecção.
Fernandes, Florbela P.
core  

Thermal Induced Changes in Cuticle and Cortex to Chemically Treated Hair

open access: yesBiopolymers, Volume 117, Issue 1, January 2026.
ABSTRACT The deterioration of the cuticle and cortex hair due to routine cosmetic practices has been identified as a primary factor contributing to undesirable changes in the esthetic qualities of hair. Chemical and physical treatments can cause significant damage to hair fibers.
C. R. R. C. Lima   +4 more
wiley   +1 more source

Simulation of Stress tests using a Poroelastic model to estimate the Permeability behavior of bedford limestone samples

open access: yesGeofísica Internacional, 2022
Por su relevancia en Geociencias, el efecto de los esfuerzos sobre las propiedades de flujo de fluido en rocas ha sido estudiado experimental y teóricamente por varias décadas.
Mario E. Vadillo-Sáenz   +4 more
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

Pseudocisto perirenal extracapsular em um gato: relato de caso

open access: yesPubvet, 2020
Pseudocisto perirenal é uma desordem pouco relatada em animais domésticos. Caracteriza-se pelo acúmulo de fluido em um saco fibroso ao redor de um ou dos dois rins.
Joyce Marina Francisco de Moraes   +4 more
doaj   +1 more source

Hydrodynamic simulations with the Godunov SPH

open access: yes, 2011
We present results based on an implementation of the Godunov Smoothed Particle Hydrodynamics (GSPH), originally developed by Inutsuka (2002), in the GADGET-3 hydrodynamic code. We first review the derivation of the GSPH discretization of the equations of
Agertz   +37 more
core   +1 more source

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

open access: yesJournal 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   +4 more
wiley   +1 more source

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