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Reflectance Spectroscopy as a Tool for Investigating Dispersed Solids and Their Surfaces
Catalysis Reviews, 1968Abstract Reflectance spectroscopy is potentially one of the most powerful experimental techniques to gain information on the electronic structure of the components of heterogeneous dispersed systems and their external as well as internal surfaces, including adsorbed layers.
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Surface Roughness Effects with Solid Lubricants Dispersed in Mineral Oils
A S L E Transactions, 1984The lubricating effectiveness of solid-lubricant dispersions are investigated in both point and line contacts using surfaces with both random and directional roughness characteristics. Friction and wear data obtained at relatively low speeds and at room temperature, indicate that the existence of solid lubricants such as graphite, MoS2, and PTFE in a ...
C. Cusano, P. R. Goglia, H. E. Sliney
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Surface Enrichment and Depletion of the Active Ingredient in Spray Dried Amorphous Solid Dispersions
Pharmaceutical Research, 2018To study the effects of physicochemical properties of drug and polymer, as well as the drug-polymer interactions, on the surface composition of SDDs.Ethanol solutions containing a model drug (IMC, NMP or FCZ) and a model polymer (PVPK12, PVPK30 or PVP-VA) were spray dried, and the surface composition of SDDs was analyzed by XPS. The surface tensions of
Zhen, Chen +5 more
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Solid Fluctuations and Dispersion in Liquid-Solid Fluidized Beds With Low Surface Tension Media
ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D, 2011Fluctuations and dispersion of solid particles were investigated in a liquid-solid fluidized bed of which diameter was 0.102 m and 2.5 m in height. Effects of liquid velocity (0.005 ∼ 0.13 m/s), particle size (0.5 ∼ 3.0 × 10−3 m) and surface tension of continuous liquid media (56 ∼ 72 × 10−3 N/m) on the fluctuation frequency and dispersion coefficient ...
H. O. Lim, M. J. Seo, Y. Kang, K. W. Jun
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Pharmaceutical Development and Technology, 2001
A combination of solid dispersion and surface adsorption techniques was used to enhance the dissolution of a poorly water-soluble drug, BAY 12-9566. In addition to dissolution enhancement, this method allows compression of the granulated dispersion into tablets. Gelucire 50/13 (polyglycolized glycerides) was used as the solid dispersion carrier.
M K, Gupta +3 more
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A combination of solid dispersion and surface adsorption techniques was used to enhance the dissolution of a poorly water-soluble drug, BAY 12-9566. In addition to dissolution enhancement, this method allows compression of the granulated dispersion into tablets. Gelucire 50/13 (polyglycolized glycerides) was used as the solid dispersion carrier.
M K, Gupta +3 more
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Ultrasonics, 2002
Basic patterns of the velocity versus wavenumber dispersion of the surface waves in solids coated by a relatively light or dense, "slow" or "fast" layer are discussed in the general case of an arbitrary anisotropy of substrate and coating materials.
A L, Shuvalov, A G, Every
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Basic patterns of the velocity versus wavenumber dispersion of the surface waves in solids coated by a relatively light or dense, "slow" or "fast" layer are discussed in the general case of an arbitrary anisotropy of substrate and coating materials.
A L, Shuvalov, A G, Every
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Annals of Physics, 1995
An approach to obtaining the dispersion equation of surface acoustic waves (SAWs) on a stress-free, randomly rough surface of an anisotropic elastic medium is suggested. The problem is solved in the approximation of a weakly rough surface using Green's function technique. The dispersion and attenuation of sagitally and shear horizontally polarized SAWs
Kosachev, V. V., Shchegrov, A. V.
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An approach to obtaining the dispersion equation of surface acoustic waves (SAWs) on a stress-free, randomly rough surface of an anisotropic elastic medium is suggested. The problem is solved in the approximation of a weakly rough surface using Green's function technique. The dispersion and attenuation of sagitally and shear horizontally polarized SAWs
Kosachev, V. V., Shchegrov, A. V.
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Wetting of Solids by Surface Active Agents: Dispersion and the Polar Surface Tension Components
1986Wetting of solids bу various surfactant solutions was investigated by the contact angle measurements. The results were analyzed using an approximation that the surfactant solutions have intrinsic dispersion (D) and polar (P) surface forces, analogous to solids and pure liquids. Using this approach gave the same value for the solid surface tension (i. e.
K. S. Birdi, E. H. Stenby
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On the long-wave onset of dispersion of the surface-wave velocity in coated solids
Wave Motion, 2008zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Shuvalov, A. L., Every, A. G.
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Influence of the interphasal surface energy on the stability of solid disperse systems
Soviet Physics Journal, 1978The extension of the size-distribution function of dispersed particles and the dependence of their individual radii on the time permitted going over to the solution of a problem on the stability of different dispersed systems in its more general formulation.
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