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Studies of factors affecting uranium determinations by automated coulometric titration (New Brunswick Laboratory/Davies--Gray Method)

Description: The method's errors are defined to ascertain its absolute accuracy. An analytical technique was developed to examine vanadyl sulfate diluent for vanadium (V). None could be found in any of the lots tested. Certain lots of reagent-grade phosphoric acid contained an unidentified impurity that caused high generator-electrode potentials and a positive error. The current-potential characteristics of the generator electrode were measured. The data indicated that a significant fraction of uranium (IV)… more
Date: April 26, 1976
Creator: Harrar, J. E. & Boyle, W. G.
Partner: UNT Libraries Government Documents Department
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Dual Manifold System for Arraying Biomolecules

Description: The objective of this CRADA is to establish a new approach to fluid transfer and array construction. This new approach will involve a high-speed, multiplexed fluid distribution valve and ink jet valves. It will enable the parallel handling of multiple reagents for a system that will have multiple applications in addition to the high-speed construction of microarrays. The primary tasks involve proof of principle experiments aimed at establishing key components of the technology and evaluating va… more
Date: April 26, 2001
Creator: Doktycz, M.J.
Partner: UNT Libraries Government Documents Department
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Synthesis and optimization of integrated chemical processes

Description: This is the final technical report for the project titled ''Synthesis and optimization of integrated chemical processes''. Progress is reported on novel algorithms for the computation of all heteroazeotropic compositions present in complex liquid mixtures; the design of novel flexible azeotropic separation processes using middle vessel batch distillation columns; and theory and algorithms for sensitivity analysis and numerical optimization of hybrid discrete/continuous dynamic systems.
Date: April 26, 2002
Creator: Barton, Paul I. & Evans, Lawrence B.
Partner: UNT Libraries Government Documents Department
open access

Experimental Determination of Thermodynamic Properties of Ion-Exchange in Heulandite: Binary Ion-Exchange Experiments at 55 and 85 oC Involving Ca2+, Sr2+, Na+, and K+

Description: Heulandite is a common rock-forming zeolite that exhibits wide solid solution of extra framework cations, presumably due to ready ion exchange with aqueous solutions. In order to provide a quantitative basis for interpreting and predicting the distribution of aqueous species between heulandite and aqueous solutions, ion exchange equilibrium between heulandite and aqueous solutions with respect to the binary cation pairs Ca{sup 2+} - K{sup +}, Ca{sup 2+} - Na{sup +}, K{sup +} - Na{sup +}, K{sup … more
Date: April 26, 2004
Creator: Fridriksson, T.; Neuhoff, P. S.; Viani, B. E. & Bird, D. K.
Partner: UNT Libraries Government Documents Department
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