Results 251 to 260 of about 146,020 (305)
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Zeitschrift f�r Physik B Condensed Matter and Quanta, 1976
A concept is presented which gives qualitative information concerning the phonon behaviour of ionic mixed crystalsAB1−xCx at certain symmetry points on the zone boundary and consequently through the zone to the center. The model assumes that the end-member phonons and the impurity-modes ofAB:C andAC:B are known and uses the assumption that mixed ...
L. Genzel, W. Bauhofer
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A concept is presented which gives qualitative information concerning the phonon behaviour of ionic mixed crystalsAB1−xCx at certain symmetry points on the zone boundary and consequently through the zone to the center. The model assumes that the end-member phonons and the impurity-modes ofAB:C andAC:B are known and uses the assumption that mixed ...
L. Genzel, W. Bauhofer
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2000
Foreword. Mixing. CFD Modelling of Hydrodynamic Conditions within the Wake of Mixing Impeller Blades; G.D. Rigby, et al. Visualisation and quantification of laminar flow mixing in a stirred tank reactor; M. Liu, et al. Turbulence structure and isotropy in stirred vessels; K.C. Lee, et al.
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Foreword. Mixing. CFD Modelling of Hydrodynamic Conditions within the Wake of Mixing Impeller Blades; G.D. Rigby, et al. Visualisation and quantification of laminar flow mixing in a stirred tank reactor; M. Liu, et al. Turbulence structure and isotropy in stirred vessels; K.C. Lee, et al.
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Mixing and crystallization in suspensions
Chemical Engineering Science, 2000The influence of mixing on suspension crystallization is described from the starting point of a fully mixed system with mixed product withdrawal. An imperfect suspension, caused by less intensive mixing, is then introduced and the effects of imperfect suspension on suspension density distribution along the height and on crystal size distribution in the
Zuoliang Sha, Seppo Palosaari
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Mixing in continuous crystallizers
AIChE Journal, 1986AbstractThe review is concerned primarily with some aspects of mixing in continuous crystallizers and recognizes the central importance of the interplay between the mixing and crystallization (or precipitation) processes in the design and performance evaluation of industrial crystallizers.
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Mixed Crystal Formation in High Polymers
Nature, 1947AN interpolymer of ethylene and vinyl alcohol (prepared by co-polymerization of vinyl acetate and ethylene followed by hydrolysis1) has been found to give a crystalline X-ray diffraction pattern different from those of either polythene or polyvinyl alcohol. The fibre repeat distance is 2.5 A., corresponding to a single hydrocarbon chain zigzag.
C W, BUNN, H S, PEISER
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The mixed suspension, mixed product removal crystallizer as a concept in crystallizer design
AIChE Journal, 1965AbstractSimultaneous population and mass balances have been solved together with a generalized form of nucleation‐growth rate kinetics to obtain the form of crystal size distribution (CSD) for several idealized modes of crystallizer operation, including seed crystal removal, product classification, arbitrary solids concentration, and staged vessels ...
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Journal of Physics: Condensed Matter, 1991
The simple example of phonons in a linear chain of atoms with substitutional disorder is reconsidered in order to determine the rearrangements of acoustic and localized mode branches with increasing concentration of light impurities. The coherent-potential approximation cannot be applies successfully to this problem.
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The simple example of phonons in a linear chain of atoms with substitutional disorder is reconsidered in order to determine the rearrangements of acoustic and localized mode branches with increasing concentration of light impurities. The coherent-potential approximation cannot be applies successfully to this problem.
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Crystallization Kinetics of Calcium Lactate in a Mixed-Suspension-Mixed-Product Removal Crystallizer
Industrial & Engineering Chemistry Research, 1999Continuous crystallization of calcium lactate pentahydrate was investigated in a mixed-suspension-mixed-product removal crystallizer. Wide ranges of the mean residence time, relative supersaturation, and magma density were covered (40−215 min, 0.01−1.12, and 2−65 kg/m3, respectively). Crystal growth was found to be dependent on crystal size. The Abegg,
Z. Chemaly, H. Muhr, M. Fick
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Solid State Communications, 1974
Abstract Dispersion relations for the optic and acoustic phonons in mixed crystals are derived as a function of concentration. The dispersion curves show localized as well as band modes. It is shown that our theory leads to the MREI model of Chang and Mitra when the wave vector q = 0.
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Abstract Dispersion relations for the optic and acoustic phonons in mixed crystals are derived as a function of concentration. The dispersion curves show localized as well as band modes. It is shown that our theory leads to the MREI model of Chang and Mitra when the wave vector q = 0.
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Crystal Growth Of Mixed Titanium Sillenites
Crystal Research and Technology, 2002AbstractFor Abstract see ChemInform Abstract in Full Text.
A. Majchrowski +5 more
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