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Engineering <i>Escherichia coli</i> for Urease-Driven Synthesis of Metal Oxide Nanomaterials. [PDF]
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Theoretical study of the elastic constants of calcite at the transition calcite I-calcite II
Physics of the Earth and Planetary Interiors, 1985Abstract Sudden changes in the elastic stiffness constants of single crystalline calcite at the transition calcite I-calcite II (Vo Thanh and Lacam) are interpreted in terms of the interaction between pressure induced elastic strains and the rotational mode of CO 3 = groups.
D. Vo-Thanh, null Diep-The-Hung
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Tetravalent Uranium in Calcite
Science, 1998X-ray absorption spectroscopy and x-ray fluorescence microprobe studies of 35-million-year-old calcite from a Mississippi Valley–type zinc ore deposit indicate substitution of tetravalent uranium for divalent calcium. Thus, tetravalent uranium has a stable location in calcite deposited under reducing conditions.
, Sturchio +4 more
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Science, 1963
Calcite-aragonite equilibrium, determined with an oscillating Griggs-Kennedy squeezer over the range 100° to 575°C, is given by P = 5500 (± 500) + 12.6 (± 1.5) T where pressure is in bars and temperature is in degrees Celsius.
G, Simmons, P, Bell
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Calcite-aragonite equilibrium, determined with an oscillating Griggs-Kennedy squeezer over the range 100° to 575°C, is given by P = 5500 (± 500) + 12.6 (± 1.5) T where pressure is in bars and temperature is in degrees Celsius.
G, Simmons, P, Bell
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Calcite–oleate–oxalate interaction in calcite flotation system
Particulate Science and Technology, 2016ABSTRACTCalcite is considered a semi-soluble mineral in flotation. Its solubility in acids plays a major role in its floatability. In this study, micro-flotation experiments are conducted to investigate the interaction of calcite particles with potassium oleate (KOl).
S. E. El-Mofty, A. A. El-Midany
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Mesoporous Calcite by Polymer Templating
Crystal Growth & Design, 2008Layered calcite crystals with internal 10−50 nm pores are precipitated from aqueous solution containing a polymer−peptide conjugate that aggregates into pore-forming templates. The zwitterionic peptide sequence behaves as the “binding block” of a double-hydrophilic block copolymer, facilitating templating, nucleation inhibition, and stabilization of ...
G. Page, M. +4 more
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Electrokinetic behaviour of calcite—the relationship with other calcite properties
Chemical Geology, 2001Six carbonate samples of different origin were investigated for their properties: composition, grain-size (Mz), specific surface area (SSA) and electrokinetic (zeta) potential. Four of the samples were of natural origin one sample was sea sediment, one lake sediment and two limestone rocks. The remaining two samples were synthetic calcites.
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Coherent nanoparticles in calcite
Science, 2017A toughening strategy known to metallurgists is also used by the ...
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Recrystallization of Magnesian Calcite Overgrowths on Calcite SeedsSuspended in Seawater
Aquatic Geochemistry, 1998The formation and subsequent reactions of magnesiancalcite overgrowths on calcite were investigated bymeans of closed system seeded precipitationexperiments. These experiments demonstrated that(1) thin overgrowths of magnesian calcite are precipitatedon calcite seeds suspended in seawater;(2) the solubilities of the coatings increase outward from ...
Jane S. Tribble, Fred T. Mackenzie
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