Results 251 to 260 of about 240,575 (272)

Streaming potential in heterogeneous networks

Journal of Geophysical Research: Solid Earth, 1998
It is well‐known that when in contact with an electrolyte, the surfaces of minerals like quartz become charged. In porous rocks, this causes coupling of fluid flow and electrical conduction. In this paper, the theory of electrokinetic coupling in a single capillary is first reviewed.
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Streaming potential from multiphase flow

GEOPHYSICS, 1994
In trying to understand the affect of electrokinetics on the spontaneous potential (SP) log, the focus has generally been on the solid‐brine streaming potential. Within the accuracy of the measurements, the streaming‐potential coupling coefficient is shown to be independent of the permeability of the rock.
Eve S. Sprunt, Tony B. Mercer, Nizar F. Djabbarah   +2 more
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Streaming Potential Measurements of Biosurfaces

Journal of The Electrochemical Society, 1976
A technique based on the measurement of streaming potentials has been developed to evaluate the electrokinetic region of the cell periphery. This approach is feasible for cell lines propagated in in-vitro cell cultures in monolayer form. The advantage of this system is that cells may be evaluated in the living state atttached to a substrate; it is not ...
R. A. Van Wagenen, J. D. Andrade, J. B. Hibbs   +2 more
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Streaming Potential and Streaming Current Methods for Characterizing Heterogeneous Solid Surfaces

Journal of Colloid and Interface Science, 2001
By monitoring changes in electrokinetic parameters, the streaming potential technique has been used as a method of characterizing heterogeneous surfaces, for example, due to protein adsorption. In general it is assumed that the change in the streaming potential is proportional to the degree of heterogeneity.
David, Erickson, Dongqing, Li
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Observable Streaming Potential in Membranes

Journal of The Electrochemical Society, 2003
Theories describing the electrokinetic processes in membranes usually involve nonobservable variables. One of these phenomena is the streaming potential, i.e., the electric potential generated by a pressure difference imposed across the membrane system.
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Potential Energy and Stream Morphology

Water Resources Research, 1971
Use of the analogy of entropy in thermodynamics reveals two basic laws which govern the formation of all stream systems. The first law is the law of average stream fall, which states that under the dynamic equilibrium condition the ratio of average fall between any two different order streams in the same river basin is unity.
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Instability of potential jet streams

JETP Letters, 2009
A Hamiltonian version has been formulated for the model of a potential jet stream of a homogeneous incompressible fluid with a free boundary. In the framework of this model, instability regimes have been analyzed. It has been shown that self-similar solutions with a compact support can be dominant structures. Analysis of the instability mechanism shows
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Theory of the Streaming Potential

Nature, 1948
BOOTH1 has recently pointed out the unsatisfactory nature of the existing theory of electrokinetics, and suggested modifications to the commonly used equations of Helmholtz2 and Smoluchowski3, with particular reference to the phenomenon of electrophoresis.
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Rapid stream stimulation and the recognition potential

Electroencephalography and Clinical Neurophysiology, 1992
The "recognition potential" is an electrical response of the brain that occurs for recognizable, but not for non-recognizable, images. When a recognizable image evokes it, the more rostral of a pair of vertically oriented occipital electrodes reaches an initial positive peak at about 200-250 msec.
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Streaming potential and turbulence

Journal of Colloid Science, 1961
P.R Stewart, N Street
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