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Browsing ELibrary by Title
Now showing items 13983-14002 of 26285
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(2002)Experimental data are presented for the solubility of NaNbO3 in the ternary system CaCO3-Ca(OH)2-NaNbO3 (or calcite-portlandite-lueshite) over the temperature range 500-950 °C at 0.1 GPa pressure. Near-liquidus phase ...
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(2003)Hildebrand solubility parameters, δ, have been calculated for the most common petroleum compounds, thus establishing a relative solubility scale of petroleum compounds in kerogen. The scale predicts that aromatics as a ...
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(2001)Platinum has been found to be mobile under supergene conditions, including placers and weathering profiles. To elucidate the nature of Pt mobility in supergene environments, the dissolution of platinum metal was investigated ...
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(1997)Within the framework of Pitzer's specific interaction model, interaction parameters for aqueous silica in concentrated electrolyte solutions have been derived from Marshall and co-authors amorphous silica solubility ...
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(2001)Silicon solubility in liquid Fe-rich metal was measured experimentally as a function of pressure, temperature and oxygen fugacity to determine if silicon could be a major light element in the Earth's core. At the P, T, fO2 ...
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(2003)The solubility of the high grade pelite assemblage albite+K-feldspar+andalusite+quartz at 650 °C and 2 kbar was determined in aqueous solutions over a total chloride range of 0.01-3 mClt°t using rapid-quench hydrothermal ...
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(1996)The solubility of tungsten (W) in a haplobasaltic melt has been determined as a function of oxygen fugacity in the temperature range 1300-1500oC using the mechanically assisted equilibrium technique of Dingwell et al. ...
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(2006)Published solubility data for amorphous ferric arsenate and scorodite have been reevaluated using the geochemical code PHREEQC with a modified thermodynamic database for the arsenic species. Solubility product calculations ...
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(1999)CO2 solubility and speciation in melts along the NaAlO2-SiO2 join from Ne (NaAlSiO4) to a model rhyolite (Ry) composition (NaAlSi6O14), have been investigated as a function of pressure (10 to 25 kb) and temperature (1450 ...
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(2001)Trace metals associate with Fe(III) oxides as adsorbed or coprecipitated species, and consequently, the biogeochemical cycles of iron and the trace metals are closely linked. This communication investigated the solubilization ...
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(1997)The solute and particulate contents of organic materials, lipids, and aliphatic and polycyclic aromatic hydrocarbons (PAHs) in surface and near-bottom waters are measured in the Bay of Sakhalin in the areas of the Astrakhan ...
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(2006)Understanding the effects of climate change including precipitation patterns has important implications for evaluating the biogeochemical responses of watersheds. We focused on four storms in late summer and early fall ...
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SOLUTE TRANSPORT IN A SINGLE FRACTURE WITH NEGLIGIBLE MATRIX PERMEABILITY: 1. FUNDAMENTAL MECHANISMS (2003)This report describes the fracture-scale mechanisms acting on solute transport in fractured aquifers under natural-flow conditions. It focuses on low-permeability rocks where advection in the matrix is negligible compared ...
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SOLUTE TRANSPORT IN A SINGLE FRACTURE WITH NEGLIGIBLE MATRIX PERMEABILITY: 2. MATHEMATICAL FORMALISM (2003)This report provides an overview of the mathematical expressions for modeling fundamental solute transport mechanisms at the fracture scale. It focuses on low-permeability rocks where advection in the matrix is negligible ...
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(1998)A radio-tracer determination of the solubility of BaSO4 in H2SO4-H2O mixtures was undertaken at temperatures of 25°C and 60°C. These were subsequently modelled using the Pitzer model for the activity coefficients, and ...
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(2005)Solubility mechanisms of water in depolymerized silicate melts quenched from high temperature (1000°-1300°C) at high pressure (0.8-2.0 GPa) have been examined in peralkaline melts in the system Na2 O-SiO2-H2O with Raman ...
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(1997)Solution mechanisms of P in metaluminous to peraluminous quenched, hydrous (#9 wt% H2O) and anhydrous glasses in the system CaO-Na2O-K2O-Al2O3-SiO2-P2O5 have been examined with microRaman spectroscopy. The principal aim ...
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(2003)Model predictions suggest that the saturation state of surface ocean waters with respect to carbonate minerals will decline during the twenty-first century owing to increased invasion of atmospheric CO2. As a result, ...
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(1999)The subject of this paper is finding of a wave field from a source placed in a liquid-filled borehole cased by a metal pipe and cement stone. Outside of the case there is a medium which can be isotropic or anisotropic; ...
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(2004)In several recent papers, M.-P. Aubry et al. have argued that “Hedbergian” principles of chronostratigraphy are being violated by the International Commission on Stratigraphy (ICS) when selecting Global Stratotype Sections ...
Now showing items 13983-14002 of 26285