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231223s2005 xx ||||| 00| ||eng c |
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|a DE-627
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|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Yethiraj, Anand
|e verfasserin
|4 aut
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| 245 |
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|a An NMR study of translational diffusion and structural anisotropy in magnetically alignable nonionic surfactant mesophases
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| 264 |
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|c 2005
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| 336 |
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|a Text
|b txt
|2 rdacontent
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| 337 |
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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| 338 |
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 08.08.2006
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|a Date Revised 05.04.2005
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a The diffusion of both water and surfactant components in aqueous solutions of the nonionic surfactant "C12E6"--which includes hexagonal, cubic, lamellar, and micellar mesophases--has been studied by pulsed-field-gradient NMR. Diffusion coefficients were measured in unaligned samples in all of these phases. They were also obtained in the hexagonal and lamellar phases in oriented monodomain samples that were aligned by slow cooling from the micellar phase in an 11.7 T magnet. Measured water and soap diffusion coefficients in the NMR-isotropic cubic and (high-water-content) micellar phases as well as diffusion anisotropy measurements in the magnetically aligned hexagonal phase were quantitatively consistent with the constituent structures of these phases being identical surfactant cylinders, with only the fraction of surface-associated water varying with the water-soap molar ratio. The values of the water and soap diffusion coefficients in the oriented lamellar phase suggest an increase in defects and obstructions to soap diffusion as a function of increasing water content, while those in the low-water-content micellar phase rule out the presence of inverse micelles
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|a Journal Article
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1 |
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|a Capitani, Donatella
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Burlinson, Nicholas E
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Burnell, E Elliott
|e verfasserin
|4 aut
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| 773 |
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8 |
|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 21(2005), 8 vom: 12. Apr., Seite 3311-21
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|x 1520-5827
|7 nnns
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| 773 |
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|g volume:21
|g year:2005
|g number:8
|g day:12
|g month:04
|g pages:3311-21
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|a AR
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| 952 |
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|d 21
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|e 8
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|c 04
|h 3311-21
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