Results 261 to 270 of about 306,618 (310)
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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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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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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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On the microhardness of mixed crystals
Journal of Applied Physics, 1980The Kataoka-Yamada model for highly concentrated solid solutions has been used to calculate the microhardness of NaCl-NaBr, KCl-KBr, and KBr-KI systems. The extra hardness in mixed crystals is computed from the amount of hindrance in the transport of ion pairs in the fluctuating stress field produced by the random distribution of anions of different ...
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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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Mixed crystal deposition in an osteoarthritic joint
The Journal of Pathology, 1977The case of a 72-yr-old woman with osteoarthritis of the shoulder, is described. A mixture of crystals of hydroxyapatite and calcium pyrophosphate dihydrate was identified in the joint tissues using analytical electron microscopy and infra-red spectroscopy.
D V, Doyle +4 more
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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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ACS Nano, 2011
Physisorbed monolayers based on relatively weak noncovalent interactions can serve as excellent model systems for understanding crystallization of materials in reduced dimensionality. Here we employ a powerful combination of scanning tunneling microscopy (STM), differential scanning calorimetry (DSC), and computational modeling to reveal two ...
Mali, K.S. +7 more
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Physisorbed monolayers based on relatively weak noncovalent interactions can serve as excellent model systems for understanding crystallization of materials in reduced dimensionality. Here we employ a powerful combination of scanning tunneling microscopy (STM), differential scanning calorimetry (DSC), and computational modeling to reveal two ...
Mali, K.S. +7 more
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International Journal of Quantum Chemistry, 2004
AbstractThe character and the magnitude of magnetic interaction in 1‐D stacks of mixed molecular radical crystals (MMRCs) and mixed molecular ion radical crystals (MMIRCs) of alternant aromatic hydrocarbons have already been studied theoretically. In this work nonalternant 1‐D stacks built of π‐electronic subunits are considered. Some of the elementary
I. Minkov, A. Tadjer
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AbstractThe character and the magnitude of magnetic interaction in 1‐D stacks of mixed molecular radical crystals (MMRCs) and mixed molecular ion radical crystals (MMIRCs) of alternant aromatic hydrocarbons have already been studied theoretically. In this work nonalternant 1‐D stacks built of π‐electronic subunits are considered. Some of the elementary
I. Minkov, A. Tadjer
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Polymerization in mixed crystals
Journal of Materials Science, 1980Suitably substituted diacetylenes can be co-crystallized to form substitutional solid solutions. By solid state polymerization of these mixed crystals macroscopic single crystals of statistical copolymers can be obtained. The co-crystallization is described and the influence of crystal composition on structure and reactivity in the solid state is ...
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