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Browsing ELibrary by Title
Now showing items 13158-13177 of 21934
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(2000)Thermodynamic analysis of Fe- and Mg-bearing plagioclase and silicate liquid was carried out based on reported element partitioning data between plagioclase and silicate liquid in reduced conditions, solution properties ...
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(1985)A thermodynamic model for quadrilateral pyroxene solutions, is developed from the following assumptions: 1) Non-convergent cation-disorder of Fe and Mg occurs over the Ml and M2 sites; 2) Ca is partitioned completely into ...
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(1985)The thermodynamics of quadrilateral pyroxene solutions have been analysed with the ternary non-convergent site-disorder model developed in Part I. Solution parameters have been refined for this model with a non-linear least ...
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(1990)In this paper we present a new method of analyzing the heat balances of complex chemical reactions in multicomponent systems; the method is a natural extension of the approach to physicochemical modeling as a problem of ...
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(2004)Thermodynamic analysis of the system Na2O-K2O-CaO-Al2O3-SiO2-H2O-F2O−1 provides phase equilibria and solidus compatibilities of rock-forming silicates and fluorides in evolved granitic systems and associated hydrothermal ...
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(1992)The alteration of cernent based materials is a phenomenon of great importance for various radwaste disposal problems, such as the durability of low level waste matrices or engineered barriers.Our approach to the durability ...
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(1987)The volatilities of the platinum-group elements as metals, oxides and chlorides were calculated at temperatures of 800–1600 K. Only Pd is significantly volatile as the metal. At logfH2O = 1 Kbar and 1200 K., the concentration ...
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(2004)We discuss two types of physical constraints derived from thermodynamics that can be applied during seismic inversions. The first constraint involves assimilating heat-flow measurements in seismic inversions. This can ...
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THERMODYNAMIC CONSTRAINTS ON THE FORMATION CONDITIONS OF WINONAITES AND SILICATE-BEARING IAB IRONS (2005)Silicate inclusions in IAB irons and related winonaite meteorites have textures, mineralogies and mineral chemistries that indicate a complex formation history of heating, followed by brecciation and metamorphism. Using ...
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(1998)Molecular hydrogen plays a central role in bacterially mediated anoxic sediment chemistry, as both an important electron transfer agent and a key thermodynamic control. We studied the response of hydrogen concentrations ...
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(1998)Molecular hydrogen plays a central role in bacterially mediated anoxic sediment chemistry, as both an important electron transfer agent and a key thermodynamic control. We studied the response of hydrogen concentrations ...
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(2001)The universe is an isolated system with constant mass-energy. The second law of thermodynamics requires that its entropy must increase over time-that is, the universe is irreversible-yet modern cosmological models presume ...
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(1987)A method is presented for determining the thermodynamic effect of the separation which makes it possible to analyze each system as a whole and to plot the change in free energy produced by separation into immiscible phases. ...
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(1997)The technique of using noble metal alloys as redox sensors has been adapted for use in hydrothermal experiments in the piston-cylinder apparatus at the reduced conditions of the iron-wustite (IW) buffer. The required high ...
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(1997)We derived a thermodynamic dataset for the phases in the CaSiO3 system including the wollastonite polymorphs (wollastonite-I, wollastonite-II, and pseudowollastonite), larnite (β-Ca2SiO4), CaSi2O5 (titanite-like), CaSiO3 ...
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(2000)Activities of CoO in (Co,Mn)O solid solutions in contact with metallic Co have been determined on ten compositions ranging from 0.12 to 0.84 XCoO in order to calibrate the divariant equilibrium between (Co,Mn)O oxide ...
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(2002)The enthalpy of drop-solution in molten 2PbO·B2O3 of synthetic and natural lawsonite, CaAl2(Si2O7)(OH)2·H2O, was measured by high-temperature oxide melt calorimetry. The enthalpy of formation determined for the synthetic ...
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(2001)The enthalpy of drop-solution in molten 2PbO·B2O3 of synthetic and natural lawsonite, CaAl2(Si2O7)(OH)2·H2O, was measured by high-temperature oxide melt calorimetry. The enthalpy of formation determined for the synthetic ...
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(2001)Calorimetric and P–V–T data for the high-pressure phase Mg5Al5Si6O21(OH)7 (Mg-sursassite) have been obtained. The enthalpy of drop solution of three different samples was measured by high-temperature oxide melt calorimetry ...
Now showing items 13158-13177 of 21934