Counter-ion Dependent Water and Amphiphile Orientation and Deuteron Exchange in Lyotropic Mesophases.

Lyotropic mesophases as defects in binary mixtures

2014 The classification of defects in ordered media is applied to the case of binary mixtures. Stable defects must be surfaces, and, in that case, interfaces. For lyotropic systems, a negative surface energy leads to a maximization of the interface area. One thus obtains, with increasing surfactant concentration, micelles, and then liquid crystal phases which must be considered as ordered defec...

Identification of Lyotropic Liquid Crystalline Mesophases

On the Swelling of Bicontinuous Lyotropic Mesophases

The swelling of sponge-like bicontinuous mesophases of bilayers of surfactant (or lipid) in water as a function of dilution is analyzed. Analytic formulae for the swelling are derived assuming ii) constant aggregate thickness and (it) fixed surface area per surfactant molecule at an imaginary surface located within the bilayer. Approximate swelling laws are derived for bicontinuous films and co...

simulation and experimental studies for prediction mineral scale formation in oil field during mixing of injection and formation water

abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...

willingness to communicate in the iranian context: language learning orientation and social support

why some learners are willing to communicate in english, concurrently others are not, has been an intensive investigation in l2 education. willingness to communicate (wtc) proposed as initiating to communicate while given a choice has recently played a crucial role in l2 learning. it was hypothesized that wtc would be associated with language learning orientations (llos) as well as social suppo...