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Browsing ELibrary by Title
Now showing items 13983-14002 of 22924
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(2003)The heat capacities (Cp) of goethite (goe, α-FeOOH), lepidocrocite (lep, γ-FeOOH), and maghemite (mag, γ-Fe2O3) were measured from below liquid helium temperature up to their decomposition temperatures by a combination of ...
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(1998)We have developed models for the thermody-namic properties of nephelines, kalsilites, and leucites in the simple system NaAlSiO4−KAlSiO4−Ca0.5AlSiO4−SiO2−H2O that are consistent with all known constraints on subsolidus ...
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(2004)Enthalpies of formation of ferrihydrite and schwertmannite were measured by acid solution calorimetry in 5 N HCl at 298 K. The published thermodynamic data for these two phases and ε-Fe2O3 were evaluated, and the best ...
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(2004)Static lattice energy calculations have been combined with cluster expansion formalism to predict pairwise ordering interactions in the pyrope-grossular solid solution. The ordering interactions, the Js, have been then ...
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(2002)Solution calorimetry and phase equilibrium data for the diopside-jadeite system are assessed using a combination of the cluster variation method (CVM) and Redlich-Kister (RK) polynomial expansion. The CVM is used to model ...
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(2002)In Part I (Vinograd, 2002) the relationship between temperature, composition and free energy of the diopside-jadeite solid solution was described using a CVM model. Here the same relationship is described using a combination ...
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(1993)Molten calcium halide and hydroxide salts may be used as flux and reactants in determining apatite exchange equilibria and solid solution behavior. New experimental data and published phase equilibria are used to determine ...
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(1994)The model for the thermodynamic properties of multicomponent pyroxenes (Part I) is calibrated for ortho- and clinopyroxenes in the quadrilateral subsystem defined by the end-member components Mg2Si2O6, CaMgSi2O6, CaFeSi2O6, ...
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(1996)
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(1996)The thermodynamics of order-disorder in mineral solid solutions are handled with symmetric formalism, whereby the mineral is treated as a solid solution between an independent set of end-members with which the range of ...
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(1993)A thermodynamic explanation for the phase size effect in mineral systems containing small crystal particles is given using the equilibrium shape of the real crystal concept. The equations obtained are in accordance with ...
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(1995)In the next ten years, a number of studies on the carbonate system are planned as part of the JGOFS/WOCE programs. The carbon dioxide system will be studied by measuring at least two of the controlling parameters; pH, total ...
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(2001)We have conducted acid–base potentiometric titrations and U(VI) sorption experiments using the Gram negative, facultatively anaerobic bacterium Shewanella putrefaciens. Results of reversed titration studies on live, inactive ...
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(2001)A thermoelastic model for calculating the high-pressure and high-temperature properties of isotropic solids is presented by extending the formalism by Thomsen and combining the resulting one with the Vinet model for static ...
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(2003)The simple theory of equation of state recently developed by Kumar is used to investigate the temperature and pressure dependence of elastic moduli of MgO. The results are found to present good agreement with the experimental ...
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(2004)The thermoelastic moduli of rock-forming minerals and their derivatives are estimated using inversion of pressure- and temperature-dependent P and S velocities. The elastic constants obtained by the new method are tested ...
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(1988)A pronounced anticyclonic intrathermocline eddy (ITE) was found in the tropical Atlantic during the institute's Mezopoligon expedition in 1985. The data indicate that such eddies survive at intermediate depths for very ...
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(2004)Thermokarst dynamics and their underlying causes are investigated and reconstructed on the basis of Muzhy weather station records (Western Siberia) of air temperature, precipitation and snow cover, and a tree-ring chronology ...
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(2004)Slab detachment or breakoff is appreciated as an important geological process, as shown by recent tomographic imaging. Using a 2-D upper-mantle model 660-km deep and 2000-km wide, we have investigated with a 2-D finite-difference ...
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(2002)Methods of nonequilibrium thermodynamics and continuum mechanics are used for studying phase transitions of the first order in deformable solids with elastic and viscoelastic rheology. A phase transition of the first order ...
Now showing items 13983-14002 of 22924