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Measurements of surface ocean carbon dioxide partial pressure during WOCE

Description: Progress during the past year of research under Measurements of Surface Ocean Carbon Dioxide Partial Pressure During WOCE'' has been significant. As was described in our previous progress report, the startup phase of this research was severely frustrated by delays in the US WOCE Hydrographic Program (WHP), which in turn were caused by delays in the mid-life refit of the R/V Knorr. As a result the high latitude southeastern Pacific work (WHP lines P19S and P16S) originally scheduled for the 1990… more
Date: February 25, 1992
Creator: Weiss, R.F.
Partner: UNT Libraries Government Documents Department
open access

Experimental and computer modeling studies of isotopically selective two-step laser photodissociation of small molecules

Description: The approach to laser isotope separation taken in this study is based on isotopically selective, two-step, laser photodissociation of small molecules. A primary goal of this study is the measurement of fundamental molecular processes which control the two-step, photodissociative isotope enrichment process. This objective has led to experimental measurements of uv photodissociation cross sections for vibrationally excited states of several small molecules, including the first cross section repor… more
Date: March 25, 1992
Creator: Zittel, P.F.
Partner: UNT Libraries Government Documents Department
open access

Novel reactor configuration for synthesis gas conversion to alcohols

Description: Our objectives during this quarter was to complete studies on the kinetics of methanol synthesis reaction in the slurry reactor with long periods of on stream studies, start experimentation in the trickle bed reactor assembly, investigate simulation studies using the piston-exchange (PE) and piston-dispersion-exchange (PDE) models, and introduce water gas shift reaction as the second reaction in our simulation studies.
Date: January 25, 1992
Creator: Akgerman, A. & Anthony, R. G.
Partner: UNT Libraries Government Documents Department
open access

Two dimensional NMR and NMR relaxation studies of coal structure

Description: This report covers the progress made on the title project for the project period. Four major areas of inquiry are being pursued. Advanced solid state NMR methods are being developed to assay the distribution of the various important functional groups that determine the reactivity of coals. Special attention is being paid to methods that are compatible with the very high magic angle sample spinning rates needed for operation at the high magnetic field strengths available today. Polarization inve… more
Date: November 25, 1992
Creator: Zilm, K.W.
Partner: UNT Libraries Government Documents Department
open access

Formation rate of ammonium nitrate in the off-gas line of SRAT and SME in DWPF

Description: A mathematical model for the formation rate of ammonium nitrate in the off-gas line of the Sludge Receipt and Adjustment Tank (SRAT) and the Slurry Mixed Evaporator (SME) in DWPF has been developed. The formation rate of ammonium nitrate in the off-gas line depends on pH, temperature, volume and total concentration of ammonia and ammonium ion. Based on a typical SRAT and SME cycle in DWPF, this model predicts the SRAT contributes about 50 lbs of ammonium nitrate while SME contributes about 60 l… more
Date: February 25, 1992
Creator: Lee, L.
Partner: UNT Libraries Government Documents Department
open access

Equilibrium ammonium concentration in slurry mix evaporator condensate tank (SMECT) with ammonia scrubbers

Description: During design reviews of the Recycle Colection Tank (RCT) at the Savannah River Site it was determined that in all cases the RCT scrub solution could not be routed to the RCT. During transfers to the tank farm (estimated ten hour cycle), the ammonia evolved from the RCT is scrubbed by the RCT scrubber and the ammonia scrub water must be returned to the SMECT. The result of this is an increased steady state concentration of ammonium in the SMECT water used for the ammonia scrubbers. The maximum … more
Date: September 25, 1992
Creator: Lambert, D. P.
Partner: UNT Libraries Government Documents Department
open access

Reactor components P-11/K-15 re-inspection standards

Description: The Mark 22 assemblies previously charged to the P Reactor as the P-11 charge, but never irradiated, are stored in borated racks in Building 105-K Assembly Area. The assemblies are stored inside aluminum cans into which they are placed and subsequently dried upon removal from the P-Reactor. This report discusses non-destructive examinations supplemented by destructive examination of a small number of these assemblies made to establish the acceptability of these assemblies for use as the K-15 ch… more
Date: August 25, 1992
Creator: Banks, J.J.
Partner: UNT Libraries Government Documents Department
open access

Nitrogen availability as a control mechanism of secondary succession within a semiarid shrubland ecosystem

Description: Three experiments were conducted within a semiarid shrubland to test the role of nitrogen availability as a control mechanism in secondary succession. Secondary succession patterns were documented for seven years and effects of increased and decreased N availability levels, fumigation, and competition by early-seral species were tested. Differential responses by seral species were determined and related to successional patterns. Nitrogen availability was found to be a primary mechanism controll… more
Date: September 25, 1992
Creator: Redente, E.F. & McLendon, T.
Partner: UNT Libraries Government Documents Department
open access

Published assessments bearing on the future use of ceramic superconductors by the electric power sector

Description: Much has been written about ceramic superconductors since their discovery in 1986. Most of this writing reports and describes scientific research. However, some authors have sought to put this research in context: to assess where the field stands, what might be technically feasible, what might be economically feasible, and what potential impacts ceramic superconductors will bring to the electric power sector. This report's purpose is to make the results of already published assessments readily … more
Date: August 25, 1992
Creator: Giese, R. F. & Wolsky, A. M.
Partner: UNT Libraries Government Documents Department
open access

Hg removal from SRTC laboratory waste using an in-tank ion exchange probe

Description: An in-tank ion exchange column, described here, has been constructed to operate in the waste tanks at the Savannah River Technology Center (SRTC). The purpose of the column is to remove dissolved mercury from laboratory wastes and capture them on Duolite{trademark} GT-73 resin. This paper summarizes the results of operation of such a column on two batches of waste in one high activity tank and on one batch of waste in a low activity tank for the purpose of removing mercury from the liquid waste… more
Date: September 25, 1992
Creator: Bibler, J. P. & DeGange, J. J.
Partner: UNT Libraries Government Documents Department
open access

Equilibrium ammonium concentration in slurry mix evaporator condensate tank (SMECT) with ammonia scrubbers

Description: During design reviews of the Recycle Colection Tank (RCT) at the Savannah River Site it was determined that in all cases the RCT scrub solution could not be routed to the RCT. During transfers to the tank farm (estimated ten hour cycle), the ammonia evolved from the RCT is scrubbed by the RCT scrubber and the ammonia scrub water must be returned to the SMECT. The result of this is an increased steady state concentration of ammonium in the SMECT water used for the ammonia scrubbers. The maximum … more
Date: September 25, 1992
Creator: Lambert, D. P.
Partner: UNT Libraries Government Documents Department
open access

Innovative Clean Coal Technology (ICCT): 180 MW demonstration of advanced tangentially-fired combustion techniques for the reduction of nitrogen oxide (NO{sub x}) emissions from coal-fired boilers. Technical progress report, second quarter 1992

Description: This quarterly report discusses the technical progress of a US Department of Energy (DOE) Innovative Clean Coal Technology (ICCT) Project demonstrating advanced tangentially-fired combustion techniques for the reduction of nitrogen oxide (NO{sub x}) emissions from a coal-fired boiler. The project is being conducted at Gulf Power Company`s Plant Lansing Smith Unit 2 located near Panama City, Florida. The primary objective of this demonstration is to determine the long-term effects of commerciall… more
Date: November 25, 1992
Partner: UNT Libraries Government Documents Department
open access

Effects of catalytic mineral matter on CO/CO{sub 2} temperature and burning time for char combustion. Quarterly progress report No. 12, July--September 1992

Description: Results (solid-1600K, open-2000K surface temperature) from Fig.3 show that oxygen and nitrogen distributions are almost same although there is a little particle shrinkage (r{sub o}=0.009cm). C0{sub 2}/CO ratio drop significantly as the temperature increases, which is opposite to experimental results reported earlier. The cause of this behavior is mainly due to the lack of gas phase CO oxidation. Therefore, C0{sub 2}/CO ratio are directly related to C0{sub 2} and CO production of the heterogeneo… more
Date: November 25, 1992
Creator: Longwell, J. P.; Sarofim, A. F.; Lee, Chun-Hyuk & Chen, Changhe
Partner: UNT Libraries Government Documents Department
open access

Measurements of surface ocean carbon dioxide partial pressure during WOCE. Technical progress report, 1 June 1991--31 May 1992

Description: Progress during the past year of research under ``Measurements of Surface Ocean Carbon Dioxide Partial Pressure During WOCE`` has been significant. As was described in our previous progress report, the startup phase of this research was severely frustrated by delays in the US WOCE Hydrographic Program (WHP), which in turn were caused by delays in the mid-life refit of the R/V Knorr. As a result the high latitude southeastern Pacific work (WHP lines P19S and P16S) originally scheduled for the 19… more
Date: February 25, 1992
Creator: Weiss, R. F.
Partner: UNT Libraries Government Documents Department
open access

Selective flotation of fossil resin from Western coal. Final report, July 1, 1990--May 25, 1992

Description: The proof-of-concept test program was designed to clarify a number of concerns that have been raised by coal companies who own the valuable resin resource. First, from laboratory bench-scale flotation experiments, a froth product from cleaner flotation containing more than 80% hexane-extractable resin at higher than 80% recovery can be produced. Pilot-plant testing was initiated to demonstrate the selective flotation of fossil resin and to establish a better confidence level in the new technolo… more
Date: May 25, 1992
Creator: Jensen, G. F. & Miller, J. D.
Partner: UNT Libraries Government Documents Department
open access

Experimental and computer modeling studies of isotopically selective two-step laser photodissociation of small molecules. Final report

Description: The approach to laser isotope separation taken in this study is based on isotopically selective, two-step, laser photodissociation of small molecules. A primary goal of this study is the measurement of fundamental molecular processes which control the two-step, photodissociative isotope enrichment process. This objective has led to experimental measurements of uv photodissociation cross sections for vibrationally excited states of several small molecules, including the first cross section repor… more
Date: March 25, 1992
Creator: Zittel, P. F.
Partner: UNT Libraries Government Documents Department
open access

Biological processes in the water column of the South Atlantic Bight: Zooplankton responses. Final report

Description: This study sought to determine and understand the major processes governing the abundance, distribution, composition and eventual fate of zooplankton on the southeastern shelf of the US in relation to water circulation. Over much of the shelf circulation is dominated by the Gulf Stream and/or atmospheric forcing. Most of our studies concentrated on processes on the middle and outer shelf. On the latter, pronounced biological production occurs year-round at frequent intervals and is due to Gulf … more
Date: September 25, 1992
Creator: Paffenhofer, G. A.
Partner: UNT Libraries Government Documents Department
open access

Studies of combustion reactions at the state-resolved differential cross section level

Description: State-resolved differential reaction cross sections provide perhaps the most detailed information about the mechanism of chemical reaction, but heretofore they have been extremely difficult to measure. This program explores a new technique for obtaining differential cross sections with product state resolution. The three-dimensional velocity distribution of state-selected reaction products is determined by ionizing the appropriate product, waiting for a delay while it recoils along the trajecto… more
Date: March 25, 1992
Creator: Houston, P. L.
Partner: UNT Libraries Government Documents Department
open access

Biological processes in the water column of the South Atlantic Bight: Zooplankton responses

Description: This study sought to determine and understand the major processes governing the abundance, distribution, composition and eventual fate of zooplankton on the southeastern shelf of the US in relation to water circulation. Over much of the shelf circulation is dominated by the Gulf Stream and/or atmospheric forcing. Most of our studies concentrated on processes on the middle and outer shelf. On the latter, pronounced biological production occurs year-round at frequent intervals and is due to Gulf … more
Date: September 25, 1992
Creator: Paffenhofer, G. A.
Partner: UNT Libraries Government Documents Department
open access

Novel reactor configuration for synthesis gas conversion to alcohols. Quarterly report, October 1, 1991--December 31, 1991

Description: Our objectives during this quarter was to complete studies on the kinetics of methanol synthesis reaction in the slurry reactor with long periods of on stream studies, start experimentation in the trickle bed reactor assembly, investigate simulation studies using the piston-exchange (PE) and piston-dispersion-exchange (PDE) models, and introduce water gas shift reaction as the second reaction in our simulation studies.
Date: January 25, 1992
Creator: Akgerman, A. & Anthony, R. G.
Partner: UNT Libraries Government Documents Department
open access

Published assessments bearing on the future use of ceramic superconductors by the electric power sector

Description: Much has been written about ceramic superconductors since their discovery in 1986. Most of this writing reports and describes scientific research. However, some authors have sought to put this research in context: to assess where the field stands, what might be technically feasible, what might be economically feasible, and what potential impacts ceramic superconductors will bring to the electric power sector. This report`s purpose is to make the results of already published assessments readily … more
Date: August 25, 1992
Creator: Giese, R. F. & Wolsky, A. M.
Partner: UNT Libraries Government Documents Department
open access

Transformations of Toluene Radical Cation in ZSM-5 and Silicalite

Description: Toluene radical cations produced by {gamma} irradiation at 77 K in ZSM-5 and Silicalite (isomorphous with ZSM-5 but nonpolar) undergo a reversible transformation to the norbornadiene radical cation at temperatures {le}150K. The transformation occurs to a greater extent in the more polar zeolite (ZSM-5). The substrate concentration plays an important role. Toluene radical cations undergo ion-molecule reactions to give benzyl radicals at low substrate loading at temperatures >200 K. At higher con… more
Date: November 25, 1992
Creator: Barnabas, M. V.; Werst, D. W. & Trifunac, A. D.
Partner: UNT Libraries Government Documents Department
open access

Innovative Clean Coal Technology (ICCT): 180 MW demonstration of advanced tangentially-fired combustion techniques for the reduction of nitrogen oxide (NO[sub x]) emissions from coal-fired boilers

Description: This quarterly report discusses the technical progress of a US Department of Energy (DOE) Innovative Clean Coal Technology (ICCT) Project demonstrating advanced tangentially-fired combustion techniques for the reduction of nitrogen oxide (NO[sub x]) emissions from a coal-fired boiler. The project is being conducted at Gulf Power Company's Plant Lansing Smith Unit 2 located near Panama City, Florida. The primary objective of this demonstration is to determine the long-term effects of commerciall… more
Date: November 25, 1992
Partner: UNT Libraries Government Documents Department
open access

Hg removal from SRTC laboratory waste using an in-tank ion exchange probe

Description: An in-tank ion exchange column, described here, has been constructed to operate in the waste tanks at the Savannah River Technology Center (SRTC). The purpose of the column is to remove dissolved mercury from laboratory wastes and capture them on Duolite[trademark] GT-73 resin. This paper summarizes the results of operation of such a column on two batches of waste in one high activity tank and on one batch of waste in a low activity tank for the purpose of removing mercury from the liquid waste… more
Date: September 25, 1992
Creator: Bibler, J. P. & DeGange, J. J.
Partner: UNT Libraries Government Documents Department
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