Search Results - "Dyrkacz, G. R."

Separation and preliminary characterization of high-purity maceral group fractions from an Australian bituminous coal by Pandolfo, A. G, Johns, R. B, Dyrkacz, G. R, Buchanan, A. S

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Use of continuous flow centrifugation techniques for coal maceral separation. 1. Fundamentals by Dyrkacz, G. R, Bloomquist, C. A. A

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Hyperfine Grinding of Coal by Dyrkacz, G. R, Bloomquist, C. A. A

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Use of continuous flow centrifugation techniques for coal maceral separation. 2. Multiple density fractionations of coals by Dyrkacz, G. R, Bloomquist, C. A. A

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Coal maceral chemistry. 1. Liquefaction behavior by Joseph, J. T, Fisher, R. B, Masin, C. A, Dyrkacz, G. R, Bloomquist, C. A, Winans, R. E

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A Density Gradient Centrifugation Method for Separation of Peat by Stack, E. M., Dyrkacz, G. R., Hatcher, P. G., Cohen, A. D.

“…The conditions necessary for a laboratory-scale separation of the premaceral constituents of peat (i.e., the precursor to coal) are investigated. The method…”
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Binary Solvent Extractions of Upper Freeport Coal by Dyrkacz, Gary R, Bloomquist, C. A. A

“…Different organic bases, primarily with carbon disulfide as co-solvent, were used to probe the nature of the binary solvent extractions of Upper Freeport coal…”
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Solvent Extraction of Separated Macerals in Carbon Disulfide/N-Methylpyrrolidone by Dyrkacz, Gary R, Bloomquist, C. A. A

“…Maceral fractions derived from density separations of six coals were extracted at room temperature in carbon disulfide/N-methylpyrrolidone based media…”
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Carbon radical spin dynamics in isolated vitrinite coal macerals by Thomann, H, Silbernagel, B. G, Jin, H, Gebhard, L. A, Tindall, P, Dyrkacz, G. R

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Density separation of alkylated coal macerals by Choi, C. Y, Dyrkacz, G. R, Stock, Leon M

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Changes in Coal Extractability with Timed Addition of Tetracyanoethylene in Carbon Disulfide/N-Methylpyrrolidone Extractions by Dyrkacz, Gary R, Bloomquist, C. A. A

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On the Use of Infrared Spectroscopy To Determine Hydroxyl Content and Reactivity of O−Acetylated and O−Alkylated Coals by Dyrkacz, Gary R, Bloomquist, C. A. A

“…Infrared spectroscopy was used to examine the O-alkylation and O-acetylation of two bituminous coals with a series of reagents. Two related aspects were…”
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Separation and Characterization of FCC Catalysts Using Density Gradient Separation by Dyrkacz, Gary R, Ruscic, Ljiljana, Marshall, Christopher L, Reagan, William

“…Two fluidized catalytic cracking catalysts were separated using isopycnic density gradient methods. For each catalyst, both the fresh and equilibrium materials…”
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An investigation of the vitrinite maceral group in microlithotypes using density gradient separation methods by Dyrkacz, Gary R, Bloomquist, C. A. A, Ruscic, L, Crelling, John C

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Adsorption of surfactants on coals and macerals by Choi, Chol Yoo, Bloomquist, C. A. A, Dyrkacz, Gary R

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The involvement of superoxide and trivalent copper in the galactose oxidase reaction by Hamilton, G A, Dyrkacz, G R, Libby, R D

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An investigation into the process of centrifugal sink/float separation of micronized coals. II : Multiple fractionation of single coal samples by DYRKACZ, G. R, RUSCIC, L

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An investigation into the process of centrifugal sink/float separations of micronized coals. I : Some inferences for coal maceral separations by DYRKACZ, G. R, RUSCIC, L, FREDERICKS, J

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Use of continuous flow centrifugation techniques for coal maceral separation. I : Fundamentals by DYRKACZ, G. R, BLOOMQUIST, C. A. A

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Use of continuous flow centrifugation techniques for coal maceral separation. II : multiple density fractionations of coals by DYRKACZ, G. R, BLOOMQUIST, C. A. A

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