Results 51 to 60 of about 836,304 (292)

UiO‐66 metal–organic frameworks in biomedicine: From structural tunability to bioimaging, photodiagnostics, and photodynamic cancer therapy

open access: yesFEBS Open Bio, EarlyView.
UiO‐66(Zr) metal–organic frameworks are chemically stable, biocompatible, and highly tunable nanomaterials. Their modular structure enables controlled drug delivery, multimodal bioimaging, and light‐activated photodynamic therapy, supporting integrated diagnostic and therapeutic (theranostic) applications in cancer and biomedical research.
Veronika Huntošová   +2 more
wiley   +1 more source

Evaluating foam heterogeneity [PDF]

open access: yes, 1972
New analytical tool is available to calculate the degree of foam heterogeneity based on the measurement of gas diffusivity values. Diffusion characteristics of plastic foam are described by a system of differential equations based on conventional ...
Lee, W. M., Liou, D. W.
core   +1 more source

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez   +5 more
wiley   +1 more source

Gas-diffusion bioelectrodes

open access: yes, 2000
Mikrostrukturierte Gasdiffusionsbioelektroden sind die ultimative Lösung zur Überwindung von Stoffaustauschbeschränkungen in Systemen, die gasförmige Substrate und enzymatische Katalysatoren verwenden. Die Arbeit konzentriert sich auf die Entwicklung eines einfachen, kostengünstigen und hochreproduzierbaren Gasdiffusionselektrodendesigns, das als ...
openaire   +2 more sources

A Novel Method for Calculating Diffusion Coefficient of Shale Gas Reservoirs: A Case Study of Longmaxi Formation in Weiyuan Area, Sichuan Basin, China

open access: yesApplied Sciences, 2023
The entire process of shale gas generation, migration, and accumulation involves the diffusion of shale gas, and it is impossible to disregard the harm that gas diffusion does to gas reservoirs.
Guozhen Wang   +5 more
doaj   +1 more source

A Comparison of Fick and Maxwell-Stefan Diffusion Formulations in PEMFC Cathode Gas Diffusion Layers [PDF]

open access: yes, 2013
This paper explores the mathematical formulations of Fick and Maxwell-Stefan diffusion in the context of polymer electrolyte membrane fuel cell cathode gas diffusion layers.
Lindstrom, Michael, Wetton, Brian
core  

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

open access: yesAdvanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt   +8 more
wiley   +1 more source

Nonisothermal two‐phase modeling of the effect of linear nonuniform catalyst layer on polymer electrolyte membrane fuel cell performance

open access: yesEnergy Science & Engineering, 2020
In this research, it is investigated to numerically evaluate the performance of a polymer electrolyte membrane fuel cell (PEMFC). The performance is investigated through the nonuniformity gradient loading at the catalyst layer (CL) of the considered ...
Seyedali Sabzpoushan   +6 more
doaj   +1 more source

Experimental study on gas diffusion characteristics of vibrating granular coal

open access: yesMeikuang Anquan, 2022
In order to explore the influence of mechanical vibration on the gas diffusion characteristics of granular coal, the self-developed vibration-gas adsorption-desorption experimental platform was used to conduct the gas desorption-diffusion experiments of ...
CHEN Xuexi   +4 more
doaj   +1 more source

Diffusion in the Lorentz Gas [PDF]

open access: yesCommunications in Theoretical Physics, 2014
The Lorentz gas, a point particle making mirror-like reflections from an extended collection of scatterers, has been a useful model of deterministic diffusion and related statistical properties for over a century. This survey summarises recent results, including periodic and aperiodic models, finite and infinite horizon, external fields, smooth or ...
openaire   +4 more sources

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