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Full-Text Articles in Physical Sciences and Mathematics
Normalizations Of Thermodynamic Properties And Some Implications For Graphical And Analytical Problems In Petrology, John B. Brady, James H. Stout
Normalizations Of Thermodynamic Properties And Some Implications For Graphical And Analytical Problems In Petrology, John B. Brady, James H. Stout
Geosciences: Faculty Publications
Petrologic problems may be analyzed using any of a variety of possible choices of units. Although gram-formula units (moles) are commonly used, other units of quantity arc more appropriate for many applications. Gram-atom units offer the numerical simplicity of gram-formula units and have the advantage of being conservative. A conservative unit of quantity is one for which the sum of the units of reactants equals the sum of the units of products in a chemical reaction. For many graphical problems, a conservative unit of quantity, such as gram-atom or mass units, should be used. Since gram-formula units are not conservative, …
A Micro-Analytical Technique For Determination Of Aluminum In Aqueous Solutions, John B. Brady, John D. Frantz
A Micro-Analytical Technique For Determination Of Aluminum In Aqueous Solutions, John B. Brady, John D. Frantz
Geosciences: Faculty Publications
A flow-cell colorimetric technique has been developed by which Al concentrations of 0.0003to 0.1 wt. percent can be analyzed in one-microliter fluid samples.An A1-complexing reagent (Ferron) continuously flowing through teflon capillary tubing is spiked with one-microliter aliquots of solutions containing A1. The sample reacts with the reagent and subsequently passes through a microcolorimeter. Measurement of less than one nanomole A1 is possible by comparing the integrated absorbance of unknown samples with standard solutions.
Interdiffusion Of S And Se In Tiemannite, Nabil Z. Boctor, John B. Brady
Interdiffusion Of S And Se In Tiemannite, Nabil Z. Boctor, John B. Brady
Geosciences: Faculty Publications
Diffusion coefficients for S-Se interdiffusion in tiemannite (HgSe) single crystals have been determined in the temperature range 500"-700oC. The measured diffusivities may be fit by the equation...