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Spinel Crystals in Tuyere Coke
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A number of dodecahedral and octahedral spinel crystals were found in tuyere coke. The possibility of spinel formation from a gas phase in the tuyere coke can be considered for dodecahedral crystals. The octahedral spinels may have been formed by annealing of precursor mineral aggregates followed by crystallization of new phases. Investigations into spinel crystals can be important for further interpretations of the conditions of origin and subsequent behavior of mineral matter during coke de...
Related newspaper, magazine, and journal articles from HighBeam Research
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ELECTROPHILIC HALOGENATION OF nido-5,6-C^sub 2^B^sub 8^H^sub 12^
Collection of Czechoslovak Chemical Communications
; Room-temperature chlorination of the dicarbaborane nido-5,6-C^sub 2^B^sub 8^H^sub 12^ (1) with CCl^sub 4^ in the presence of anhydrous AlCl^sub 3^ yielded a mixture of 7-Cl-5,6-C^sub 2^B^sub 8^H^sub 11^ (7-Cl-1) (yield 34 4-Cl-5,6-C^sub 2^B^sub 8^H^sub 11^ (4-Cl-1) (yield 20 3-Cl-5,6-C^sub 2^B^sub
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POLYHEDRAL MONOCARBABORANE CHEMISTRY. FUNCTIONALITY AND ISOMERISM: REACTIONS OF THE [6-Ph-nido-6-CB^sub 9^H^sub 11^]^sup -^ ANION WITH AMINOPYRIDINES NC^sub 5^H^sub 4^NH^sub 2^ TO YIELD NEUTRAL arachno AND closo TEN-VERTEX MONOCARBABORANE DERIVATIVES
Collection of Czechoslovak Chemical Communications
; Reaction of NC^sub 5^H^sub 4^-2-NH^sub 2^ with the [6-Ph-nido-6-CB^sub 9^H^sub 11sup -^ anion (1) in the presence of hydrated FeCl^sub 3^ gives [6-Ph-9-(NC^sub 5^H^sub 4^-2-NH^sub 2arachno-6-CB^sub 9^H^sub 12^] (4) and thence [1-Ph-2-(NC^sub 5^H^sub 4^-2-NH^sub 2closo-1-CB^sub 9^H^sub 8^] (5), in
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Solid-Solid Reactions in the Ca^sub 3^(AsO^sub 4^)^sub 2^-Ca^sub 2^SiO^sub 4^-CaSO^sub 4^ Ternary System at Elevated Temperatures
Metallurgical and Materials Transactions
; Exploratory laboratory-scale tests were performed in order to identify the solid phases present in the Ca^sub 2^SiO^sub 4^-Ca^sub 3^(AsO^sub 4sub 2^ binary system and in the Ca^sub 2^SiO^sub 4^-Ca^sub 3^(AsO^sub 4^)2-CaSO^sub 4^-CaO system. A microanalysis study from slow-cooled samples suggests
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Modeling of the Solubilities of NiO/NiAl^sub 2^O^sub 4^ and FeO/FeAl^sub 2^O^sub 4^ in Cryolite Melts at 1300 K
Metallurgical and Materials Transactions
; Experiments to measure the solubilities of NiOTNiAl^sub 2^O^sub 4^ and FeO/FeAl^sub 2^O^sub 4^ were performed, and the results confirmed existing literature values. The solubilities of NiAl^sub 2^O^sub 4^ and FeAl^sub 2^O^sub 4^ in Al^sub 2^O^sub 3^-saturated cryolite melts at 1300 K were modeled
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Molecular Basis for the Dynamic Strength of the Integrin a^sub 4^B^sub 1^/VCAM-1 Interaction
Biophysical Journal
; ABSTRACT Intercellular adhesion mediated by integrin ?^sub 4sub 1^ and vascular cell adhesion molecule-1 (VCAM-1) plays a crucial role in both the rolling and firm attachment of leukocytes onto the vascular endothelium. Essential to the ?^sub 4sub 1^/VCAM-1 interaction is its mechanical strength
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Thermodynamics and Kinetics of the Formation of Al^sub 2^O^sub 3^/ MgAl^sub 2^O^sub 4^/MgO in Al-Silica Metal Matrix Composite
Metallurgical and Materials Transactions
; The formation of Al^sub 2^O^sub 3^, MgAl^sub 2^O^sub 4^, and MgO has been widely studied in different Al base metal matrix composites, but the studies on thermodynamic aspects of the Al^sub 2^O^sub 3^/ MgAl^sub 2^O^sub 4^/MgO phase equilibria have been limited to few systems such as Al/Al^sub
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Routine Isotope-Dilution Liquid Chromatography-Tandem Mass Spectrometry Assay for Simultaneous Measurement of the 25-Hydroxy Metabolites of Vitamins D^sub 2^ and D^sub 3^
Clinical Chemistry
; Background: Measurement of 25-hydroxyvitamin D^sub 2^ and D^sub 3^ (25-OH D^sub 2^ and D^sub 3^) is essential for investigating vitamin D deficiency. Competitive binding techniques are unable to distinguish between the 2 metabolites and suffer from interference from other hydroxy metabolites of
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A Direct Free Thyroxine (T^sub 4^) Immunoassay with the Characteristics of a Total T^sub 4^ Immunoassay
Clinical Chemistry
; Background: Direct free thyroxine (T^sub 4^) measurements have been linked to both T^sub 4^-binding serum protein concentrations and protein-bound T^sub 4^ concentrations. Whether this is evidence of a relationship to total T^sub 4^ concentrations has not been reported. Methods: We compared an
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Quantitative characterization of the microstructure of two-phase TiB^sub 2^ + Al^sub 2^O^sub 3^ ceramics using mean integral curvature
Metallurgical and Materials Transactions
; Two-phase TiB^sub 2^ + Al^sub 2^O^sub 3^ ceramics with an interconnected or dispersed TiB^sub 2^ (minor)-phase microstructure can be produced by variations in processing parameters. A standard method of quantitative characterization of the microstructural bias, i.e., the degree of TiB^sub 2^ phase
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Technical Note: Vaginal Absorption of 1,25(OH)^sub 2^D^sub 3^ in Cattle
Journal of Dairy Science
; ABSTRACT Although exogenous 1,25-dihydroxyvitamin D^sub 3^ [1,25(OH)^sub 2^D^sub 3^] administered via intravenous, intramuscular, and oral routes has been tested for efficacy in preventing parturient hypocalcemia in dairy cows, there are few reports concerning intravaginal administration. For this
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