Results 11 to 20 of about 275,695 (289)

Zeta Potential of Beta Zeolites: Influence of Structure, Acidity, pH, Temperature and Concentration

open access: yesMolecules, 2018
Measurements of the zeta potential of solid heterogeneous supports are important for preparation of metal supported catalysts and for shaping zeolites into extrudates.
Xuan Liu   +9 more
doaj   +1 more source

Zeta potential measurement in bioactive collagen

open access: yesMaterials Research, 2004
The focus of this work is to show the influence of surface charge on the bioactivity of modified collagen fiber surface. Because silica plays an important role on bone mineralization process, silica obtained by a sol-gel process was used as a surface ...
Ângela Leão Andrade   +2 more
doaj   +1 more source

Prediction of Zeta Potential for Tropical Peat in the presence of different Cations using Artificial Neural Networks

open access: yesInternational Journal of Electrochemical Science, 2011
Zeta potential (ζ) of the peat was measured by electrophoresis in the presence of different cations. Artificial neural networks (ANNs) were developed for the prediction of the ζ of peat in the presence of the cations at different pH values and ionic ...
Afshin Asadi   +5 more
doaj   +1 more source

Surface Potential/Charge Sensing Techniques and Applications

open access: yesSensors, 2020
Surface potential and surface charge sensing techniques have attracted a wide range of research interest in recent decades. With the development and optimization of detection technologies, especially nanosensors, new mechanisms and techniques are ...
Songyue Chen, Hepeng Dong, Jing Yang
doaj   +1 more source

Investigations on the adsorption, wettability and zeta potential of anionic surfactant in limestone

open access: yesAnais da Academia Brasileira de Ciências, 2021
The understanding of the mechanisms that affect oil production in carbonaceous reservoirs has become increasingly necessary, particularly in limestone, which mostly features oil wettability properties that diminishes petroleum recovery.
ALLAN M. NEVES   +5 more
doaj   +1 more source

Positive Liouville theorems and asymptotic behavior for p-Laplacian type elliptic equations with a Fuchsian potential [PDF]

open access: yes, 2010
We study positive Liouville theorems and the asymptotic behavior of positive solutions of p-Laplacian type elliptic equations of the form Q'(u):= - pLaplace(u) + V |u|^{p-2} u = 0 in X, where X is a domain in R^d, d > 1, and ...
Fraas, Martin, Pinchover, Yehuda
core   +3 more sources

Enhanced Dyeing of Polypropylene Using Fluorine–Oxygen Gas Mixtures

open access: yesColorants, 2023
Surface fluorination with pure F2 gas can easily make the surface on PP (polypropylene) hydrophobic, and it causes limited dyeability, as reported in a previous paper.
Masanari Namie   +2 more
doaj   +1 more source

STREAMING CURRENT INDUCED BY FLUID FLOW IN POROUS MEDIA [PDF]

open access: yesEarth Science Malaysia, 2018
Streaming current is induced by the relative motion between a fluid and a solid surface under a fluid pressure difference. In this work, a theoretical model for the streaming current coefficient in porous media is firstly developed based on the fractal
Luong Duy Thanh, Phan Van Do
doaj   +1 more source

Wettability Studies Using Zeta Potential Measurements

open access: yesJournal of Chemistry, 2015
Wettability studies have been carried out on reservoir rocks using different techniques such as the Amott-Harvey method, the USBM method, and the contact angle method, all with limitations.
Ghada Bassioni, Syed Taha Taqvi
doaj   +1 more source

Introducing Membrane Charge and Membrane Potential to T Cell Signaling

open access: yesFrontiers in Immunology, 2017
While membrane models now include the heterogeneous distribution of lipids, the impact of membrane charges on regulating the association of proteins with the plasma membrane is often overlooked.
Yuanqing Ma   +7 more
doaj   +1 more source

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