Results 291 to 300 of about 428,475 (348)
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Rheumatic Disease Clinics of North America, 1988
Mixtures of crystals are found in joint tissues more commonly than would be expected by chance. In osteoarthritic joints, for example, mixtures of different calcium salts are more common than any one type of crystal alone. This is partly explained by the predisposing factors and mechanisms of crystal formation, many of which are not salt specific.
P, Dieppe, G, Campion, M, Doherty
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Mixtures of crystals are found in joint tissues more commonly than would be expected by chance. In osteoarthritic joints, for example, mixtures of different calcium salts are more common than any one type of crystal alone. This is partly explained by the predisposing factors and mechanisms of crystal formation, many of which are not salt specific.
P, Dieppe, G, Campion, M, Doherty
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Mixed crystal phthalocyanine films
Crystal Engineering, 2003Thin vacuum sublimed films composed of planar metallophthalocyanines in various proportions have been studied by means of X-ray diffraction. Formation of stable solid solution is proposed from experimental data.
G.L. Pakhomov, Yu.N. Drozdov
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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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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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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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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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Optical dephasing in semiconductor mixed crystals
Physical Review B, 1992The influence of disorder and localization on optical dephasing of excitons in the semiconductor mixed crystals ${\mathrm{CdS}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{Se}}_{\mathit{x}}$ and ${\mathrm{Al}}_{\mathit{x}}$${\mathrm{Ga}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$As has been investigated by means of time-resolved four-wave mixing and ...
, Siegner +11 more
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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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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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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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