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Browsing ELibrary by Title
Now showing items 1643-1662 of 21934
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(2001)The movement of fluids in the crust and upper mantle not only lead to important mineral reactions but also play an essential role in the geochemical cycling of elements and in controlling global change. Numerous papers ...
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(2004)Theory is derived from the work of Urey (Urey H. C. [1947] The thermodynamic properties of isotopic substances. J. Chem. Soc. 562–581) to calculate equilibrium constants commonly used in geochemical equilibrium and ...
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(2002)The increment method is applied to calculation of oxygen isotope fractionation factors for common magmatic rocks. The 18O-enrichment degree of the different compositions of magmatic rocks is evaluated by the oxygen isotope ...
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(1991)A theoretical model calculating the thermodynamic isotope factors of oxygen in metal oxides of geochemical interest is presented for temperatures between 0 and 1200-degrees-C on the basis of the modified increment method. ...
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(1998)Thermodynamic calculation of partial melting of peridotite using the MELTS algorithm has the potential to aid understanding of a wide range of problems related to mantle melting. We review the methodology of MELTS calculations ...
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(2001)The objectives of this study are to: assess the regional contribution of outcrop-scale structures in well-exposed rocks of a tectonic province; and evaluate how failure to measure this scale of structure affects the ...
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CALCULATION OF STRESSED STATE OF ROCKS TAKING INTO ACCOUNT SEQUENCE OF THE FILLING MASS CONSTRUCTION (2001)Methods of determining the stresses in rock mass have been considered. Influence of various factors on the stresses has been discussed. Method of evaluating the sequence of development of the mining and filling operation ...
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(2006)The increment method has been successfully applied to calculate thermodynamic isotope fractionation factors of oxygen in silicates, oxides, carbonates, and sulfates. In this paper, we modified the increment method to ...
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(1999)Methodology for the calculation of 13C NMR shieldings on molecular organic fragments, representative of monomers in a type III kerogen, is presented. Geometry optimization of each molecular fragment was carried out using ...
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(1995)13C NMR shieldings have been calculated using the random-phase-approximation, localized-orbital local-origins version of ab initio coupled Hartree-Fock perturbation theory for CO2 and and for several complexes formed by ...
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(2000)The composition of solid precipitated from cooling magma is calculated from chemical differentiation profiles and an incompatible element monitor of fractionation. In a period of cooling, magma evolves to a derivative ...
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(2003)Recent experimental studies have reported the existence of two new Sb sulfide species, Sb2S52− and Sb2S62−, in alkaline sulfidic solutions in equilibrium with stibnite, Sb2S3, and orthorhombic S. These species contain ...
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(2001)The standard molal thermodynamic properties and heat capacity power function coefficients of more than 100 organic sulfur compounds in the crystalline, liquid, and/or gas state have been calculated by combining regressions ...
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(2001)The standard molal thermodynamic properties and heat capacity power function coefficients of more than 100 organic sulfur compounds in the crystalline, liquid, and/or gas state have been calculated by combining regressions ...
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(1998)Calculation of the thermodynamic properties of organic solids, liquids, and gases at high temperatures and pressures is a requisite for characterizing hydrothermal metastable equilibrium states involving these species and ...
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(1999)Dissociation constants of aqueous ion pairs HCl0 and HBr0 derived in the literature from vapor pressure and supercritical conductance measurements and were used to calculate the standard partial molal thermodynamic properties ...
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(1997)Regression of experimental activity coefficient and dissociation constant data reported in the literature with the Huckel (1925) and Setchenow (1892) equations (Helgeson et al., 1981) and the revised HKF equations of state ...
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(2001)The aluminum tridecameric polyoxocation, AlO4Al12(OH)24(H2O)127+ is a major component in partially hydrolyzed Al+3(aq) solutions and has been extensively studied experimentally, mainly using NMR techniques. I have calculated ...
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(1988)Correlation algorithms permit prediction of species-dependent parameters in revised equations of state (tanger and Helgeson, 1988) for aqueous ions and electrolytes which can be used together with values at 25°C and 1 bar ...
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(1989)Consideration of interactions between neutral aqueous species and H2O dipoles in terms of effective Born coefficients permits extension of the revised HKF (Helgeson, Kirkham and Flowers, 1981) equations of state (Tanger ...
Now showing items 1643-1662 of 21934