scholarly journals Test-area simulation method for the direct determination of the interfacial tension of systems with continuous or discontinuous potentials

2005 ◽  
Vol 123 (13) ◽  
pp. 134703 ◽  
Author(s):  
Guy J. Gloor ◽  
George Jackson ◽  
Felipe J. Blas ◽  
Enrique de Miguel
Keyword(s):  
Interfacial Tension ◽  
Direct Determination ◽  
Simulation Method ◽  
Test Area

scholarly journals Direct Determination of the Distribution Coefficient of Tridecyl Dimethyl Phosphine Oxide between Water and Hexane

2018 ◽  
Vol 2 (3) ◽  
pp. 28 ◽  
Author(s):  
Valentin Fainerman ◽  
Altynay Sharipova ◽  
Saule Aidarova ◽  
Volodymyr Kovalchuk ◽  
Eugene Aksenenko ◽  
...  
Keyword(s):  
Interfacial Tension ◽  
Distribution Coefficient ◽  
Phosphine Oxide ◽  
Profile Analysis ◽  
Water Drop ◽  
Direct Determination ◽  
Interfacial Tensions ◽  
Drop Profile Analysis Tensiometry ◽  
Hexane Solution

Drop profile analysis tensiometry is applied to determine the distribution coefficient of a nonionic surfactant for a water/hexane system. The basic idea is to measure the interfacial tension isotherm in two configurations: a hexane drop immersed in the surfactant aqueous solutions at different bulk concentrations, and a water drop immersed into a hexane solution of the same surfactant. Both types of experiments lead to an isotherm for the equilibrium interfacial tensions with the same slope but with a concentration shift between them. This shift refers exactly to the value of the distribution coefficient.

The Direct Determination of I131 in Heterogeneous Fecal Specimens

1961 ◽  
Vol 41 (4) ◽  
pp. 380-384 ◽  
Author(s):  
Arthur F. Dratz ◽  
James C. Coberly
Keyword(s):  
Direct Determination

A New Method for Direct Determination of the Recoilless Fraction with Application to Magnetic Nanoparticles

2002 ◽  
Vol 721 ◽  
Author(s):  
Monica Sorescu
Keyword(s):  
Room Temperature ◽  
Average Particle Size ◽  
Direct Determination ◽  
Average Particle ◽  
Lattice Method ◽  
Recoilless Fraction ◽  
Single Room ◽  
Magnetite Particles ◽  
Physical Mixtures

AbstractWe propose a two-lattice method for direct determination of the recoilless fraction using a single room-temperature transmission Mössbauer measurement. The method is first demonstrated for the case of iron and metallic glass two-foil system and is next generalized for the case of physical mixtures of two powders. We further apply this method to determine the recoilless fraction of hematite and magnetite particles. Finally, we provide direct measurement of the recoilless fraction in nanohematite and nanomagnetite with an average particle size of 19 nm.

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