Results 251 to 260 of about 2,145,679 (291)
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1984
Publisher Summary Lipids and proteins contain groups that are charged at the appropriate pH. Many biological membranes possess surface charges due to the presence of these lipids and proteins. There is experimental evidence for a surface charge present on both the outer and inner surfaces of the squid giant axon membrane. This chapter illustrates the
Daniel L. Gilbert, Gerald Ehrenstein
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Publisher Summary Lipids and proteins contain groups that are charged at the appropriate pH. Many biological membranes possess surface charges due to the presence of these lipids and proteins. There is experimental evidence for a surface charge present on both the outer and inner surfaces of the squid giant axon membrane. This chapter illustrates the
Daniel L. Gilbert, Gerald Ehrenstein
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Surface charge and asbestos toxicity
Nature, 1977ASBESTOS is a serious occupational and environmental hazard because of its fibrogenic and carcinogenic actions on the lung. Asbestos fibres exist in various physical forms, all of which are toxic. It is not known, however, which form is the most hazardous or which fibre property is the most important for inducing the toxic effects. It is thus important
W G, Light, E T, Wei
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Charge Accumulation at InAs Surfaces
Physical Review Letters, 1996Angle-resolved photoelectron spectroscopy has been used to directly prove the existence of a charge accumulation layer at clean InAs surfaces. The formation of an accumulation layer is shown to be a common property of polar InAs surfaces, with the precise surface Fermi level position above the conduction band minimum determined by the surface geometry.
, Olsson +5 more
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Thermoelectroconvection near charge-selective surfaces
Physical Review E, 2015A new kind of instability caused by Joule heating near charge-selective surfaces (permselective membranes, electrodes, or systems of micro- and nanochannels) is investigated theoretically using a model based on the Rubinstein-Zaltzman approach. A simple relation is derived for the marginal stability curves: Joule heating can either destabilize or ...
E A, Demekhin +3 more
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Surface Charge Properties of Kaolinite
Clays and Clay Minerals, 1996AbstractThe surface charge components of 2 Georgia kaolinites of differing degrees of crystallinity (KGa-1 and KGa-2) were determined using procedures based on charge balance concepts. Permanent structural charge density (σ0) was determined by measuring the surface excess of Cs, which is highly selective to permanent charge sites.
B.K. Schroth, G. Sposito
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Surface Charge Relaxation during Coagulation
Journal of Colloid and Interface Science, 1993Abstract Transient deviations from the equilibrium surface charge density during the interaction of colloidal particles have been studied. Such deviations cause the process of particle encounter to become a non-first-order Markov process, complicating the analysis of colloid stability.
Kijlstra, J., van Leeuwen, H.P.
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The influence of discrete surface charges on the force between charged surfaces
The Journal of Chemical Physics, 2005The force between two parallel charged flat surfaces, with discrete surface charges, has been calculated with Monte Carlo simulations for different values of the electrostatic coupling. For low electrostatic coupling (small counterion valence, small surface charge, high dielectric constant, and high temperature) the total force is dominated by the ...
Khan, Malek O. +2 more
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Anisotropic Surface Charging of Chlorite Surfaces
Clays and Clay Minerals, 2013AbstractChlorite is a layered silicate mineral group of importance in geology, agriculture, and in the processing of mineral resources. A more detailed analysis of the surface charge of chlorite minerals is important in order to improve our fundamental understanding of such particle structures and their behavior in suspension.
Xihui Yin +4 more
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Humidity transforms immobile surface charges into mobile charges during triboelectric charging
Physical Chemistry Chemical Physics, 2019Ionic material fragments created by contact stress will react with water to create ions that can transfer between surfaces.
Phwey S. Gil, Daniel J. Lacks
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Bone Morphogenesis and Surface Charge
Clinical Orthopaedics and Related Research, 1976The electrophoretic mobility of variously treated bone specimens, with and without bone morphogenetic activity, has been measured in physiological solutions. The Bone Morphogenetic Principle appears to be associated with a minimum negative surface charge on the implant that corresponds to that of normal undemineralized cortical bone in saline ...
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