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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: May 27, 1992
Creator: Zilm, K.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fundamental mechanisms in flue gas conditioning

Description: This project is divided into four tasks. The Management Plan was developed in task 1. Task 2, Evaluation of Mechanisms in FGD Sorbent and Ash Interactions, focuses on the characteristics of binary mixtures of these distinct powders. Task 3, Evaluation of Mechanisms in Conditioning Agents and Ash, is designed to examine the effects of various conditioning agents on fine ash particles to determine the mechanisms by which these agents alter the physical properties of the ash. Tasks 2 and 3 began w… more
Date: April 27, 1992
Creator: Snyder, T. R.; Robinson, M. S. & Bush, P. V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Enhanced durability and reactivity for zinc ferrite desulfurization sorbent

Description: AMAX Research Development Center (AMAX R D) has been investigating methods for improving the reactivity and durability of the zinc ferrite desulfurization sorbent. Zinc ferrite sorbents are intended for use in desulfurization of hog coal gas in integrated gasification combined cycle (IGCC) or molten carbonate fuel cell (MCFC) applications. The reactivity of the sorbent may be defined as its sulfur sorption capacity at the breakthrough point in a bench-scale fixed-bed reactor. The durability may… more
Date: October 27, 1987
Creator: Jha, M. C. & Berggren, M. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Baseline design/economics for advanced Fischer-Tropsch technology

Description: The objectives of the study are to: Develop a baseline design for indirect liquefaction using advanced Fischer-Tropsch (F-T) technology. Prepare the capital and operating costs for the baseline design. Develop a process flowsheet simulation (PFS) model. The baseline design, the economic analysis, and the computer model will be the major research planning tools that Pittsburgh Energy Technology Center will use to plan, guide, and evaluate its ongoing and future research and commercialization pro… more
Date: April 27, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Applications of Micellar Enzymology to Clean Coal Technology. [Laccase]

Description: This project is designed to develop methods for pre-combustion coal remediation by implementing recent advances in enzyme biochemistry. The novel approach of this study is incorporation of hydrophilic oxidative enzymes in reverse micelles in an organic solvent. Enzymes from commercial sources or microbial extracts are being investigated for their capacity to remove organic sulfur from coal by oxidation of the sulfur groups, splitting of C-S bonds and loss of sulfur as sulfuric acid. Dibenzothio… more
Date: April 27, 1990
Creator: Walsh, C. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Structure and thermochemical kinetic studies of coal pyrolysis

Description: The overall objectives of this project is an intensive effort on the application of laser to the microscopic structure and thermochemical kinetic studies of coal particles pyrolysis, char combustion and ash transformation at combustion level that fluxes in a laser beam. Research emphasis in FY91 is placed on setup and calibration of the laser pyrolysis system, preparation and mass loss studies of Beulah lignite and subbituminous coals. The task is therefore divided into three subtasks. 4 figs.,… more
Date: August 27, 1991
Creator: Dodoo, J.N.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nitrogen oxide abatement by distributed fuel addition

Description: This research is directed towards the development of engineering guidelines that define the application of distributed fuel addition as a technique for NOx abatement. It is expected that multiple fuel and air addition in the post-flame of a combustion process will increase free radical concentrations which destroy nitrogenous species and thus help them decay toward their equilibrium concentrations, which can be very low in that region of the combustor. Screening experiments were conducted on a … more
Date: June 27, 1988
Creator: Wendt, J. O. L. & Meraab, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of advanced NO sub x control concepts for coal-fired utility boilers

Description: CombiNO{sub x} is an integration of three technologies: modified reburning, promoted selective noncatalytic reduction (SNCR) and methanol injection. These technologies are combined to achieve high levels of NO{sub x}, emission reduction from coal fired power plants equipped with SO{sub 2} scrubbers. The first two steps, modified reburning and promoted SNCR are linked. It has been shown that, performance of the SNCR agent is dependent upon local oxidation of CO. Reburning is used to generate the… more
Date: May 27, 1992
Creator: Evans, A.; Newhall, J.; England, G. & Seeker, W. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fundamental studies of fusion plasmas

Description: Work on ICRF interaction with the edge plasma is reported. ICRF generated convective cells have been established as an important mechanism for influencing edge transport and interaction with the H-mode, and for controlling profiles in the tokamak scrape-off-layer. Power dissipation by rf sheaths has been shown to be significant for some misaligned ICRF and IIBW antenna systems. Near-field antenna sheath work has been extended to the far-field case, important for experiments with low single pass… more
Date: April 27, 1993
Creator: Aamodt, R. E.; Catto, P. J.; D'Ippolito, D. A.; Myra, J. R. & Russell, D. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fundamental mechanisms in flue gas conditioning

Description: This project is divided into four tasks. We developed our management plan in Task 1. Task 2, evaluation of mechanisms in FGD sorbent and ash interactions, focuses on characteristics of binary mixtures of these distinct powders. Task 3, evaluation of mechanisms in conditioning agents and ash, is designed to examine effects of various conditioning agents on fine ash particles to determine mechanisms by which these agents alter physical properties of ash. We began Tasks 2 and 3 with an extensive l… more
Date: October 27, 1992
Creator: Snyder, T. R. & Vann Bush, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Bench-scale co-processing

Description: The objective of this contract is to extend and optimize UOP's single-stage slurry-catalyzed co-processing scheme. Particular emphasis is given to defining and improving catalyst utilization and costs, evaluating alternative and disposable slurry-catalyst systems, and improving catalyst recycle and recovery techniques. The work during this quarter involved a series of temperature studies with different concentrations of Mo slurry catalyst. The results of bench-scale Runs 26 and 27 are discussed… more
Date: March 27, 1990
Creator: Nafis, D.A.; Gatsis, J.G.; Lea, C. & Miller, M.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

[Michigan Technological University Pre-Service Teacher Enhancement Program]. [Includes a copy of the Student Guide]

Description: The Michigan Technological University Teacher Education Program received funding from the US Department of Energy for the purpose of providing capable and suitably inclined, MTU Engineering and Science students a chance to explore high school level science and mathematics teaching as a career option. Ten undergraduate students were selected from nominations and were paired with mentor teachers for the study. This report covers the experience of the first ten nominees and their participation in … more
Date: April 27, 1993
Creator: Anderson, C.S. & Yarroch, W.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

(Experimental development, testing and research work in support of the inertial confinement fusion program)

Description: This KMS Fusion Semi-Annual Technical Report covers the period October 1989 through March 1990. It contains a review of work performed by KMS Fusion, Inc. (KMSF), in support of the national program to achieve inertially confined fusion (ICF). A major section of the report is devoted to target technology, a field which is expected to play an increasingly important role in the overall KMSF fusion effort. Among the highlights of our efforts in this area covered in this report are: improvements and… more
Date: April 27, 1990
Creator: Johnson, R.; Luckhardt, R.; Terry, N.; Drake, D. & Gaines, J. (eds.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mechanisms and genetic control of interspecific crossing barriers in Lycopersicon

Description: This study employs Lycopersicon esculentum and L. pennellii as model systems to study the interspecific reproductive barriers unilateral incongruity (UI), hybrid breakdown and interspecific aberrant ratio syndrome (IARS).
Date: March 27, 1993
Creator: Mutschler, M.A. (Cornell Univ., Ithaca, NY (United States)) & McCormick, S. (Agricultural Research Service, Albany, CA (United States). Plant Gene Expression Center)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Microtube Strip Heat Exchanger

Description: Doty Scientific (DSI) believes their Microtube-Strip Heat Exchanger will contribute significantly to (a) the closed Brayton cycles being pursued at MIT, NASA, and elsewhere; (b) reverse Brayton cycle cryocoolers, currently being investigated by NASA for space missions, being applied to MRI superconducting magnets; and (c) high-efficiency cryogenic gas separation schemes for CO{sub 2} removal from exhaust stacks. The goal of this current study is to show the potential for substantial progress in… more
Date: December 27, 1990
Creator: Doty, F. David
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Catalyst and process development for synthesis gas conversion to isobutylene. Quarterly report, April 1, 1992--June 30, 1992

Description: A rate equation for carbon monoxide consumption showing first order in CO and 0.5 order in hydrogen indicates the rate controlling step involves dissociated hydrogen. The inhibition of the rate with carbon dioxide is also shown. Examination of the hydrocarbon distributions indicates a see-saw effect with the C{sub 4}s representing the fulcrum and methane and C{sub 5}{sup +} the end points. The shift in the distributions tends to be towards the C{sub 5}{sup +} for high pressures and long residen… more
Date: July 27, 1992
Creator: Anthony, R. G. & Akgerman, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nitrogen oxide abatement by distributed fuel addition. Quarterly report No. 12, May 1, 1990--July 31, 1990

Description: The research reported here is concerned with the application of secondary fuel addition, otherwise known as reburning, as a means of NO{sub x} destruction downstream of the primary flame zone in boilers. This paper consists of two parts: First, results from a statistically correct design of parametric experiments on a laboratory coal combustor are presented. These allow the effects of the most important variables to be isolated and identified. Second, mechanisms governing the inter-conversion a… more
Date: August 27, 1990
Creator: Wendt, J. O. L. & Mereb, J. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Bench-scale testing of on-line control of column flotation using a novel analyzer. Revised final report, [October 1992--October 1993]: Volume 1

Description: The main advantage of the project is that it allowed PTI to gain knowledge and experience about the proper approach, methods and hardware required to properly optimize and control column flotation performance. Many operational problems were incurred during the project, some of that PTI was able to solve during the project and other that must be overcome as the technology is further developed and commercialized. The key operating problems experienced with the KEN-FLOTE{sup TM} Column that must b… more
Date: October 27, 1993
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hydrogeochemical and production controls on NORM in oil-and gas-field operations. Technical progress report, October 1, 1993--December 31, 1993

Description: This project is designed to investigate the geochemical, geological, and production parameters that control the occurrence of naturally occurring radioactive material (NORM) in oil- and gas-field operations. Relations between reservoir setting and NORM content of brine and scale will be interpreted on the basis of the geochemistry of natural radioactivity in oil and gas reservoir, the compositions of produced water and production-equipment scale, and geochemical modeling to determine the type a… more
Date: January 27, 1994
Creator: Fisher, R. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Nitrogen oxide abatement by distributed fuel addition. Quarterly report No. 5, August 1, 1988--October 31, 1988

Description: A screening study was performed on a laboratory scale downfired combustor to determine the effect of various variables on the effectiveness of the reburning process as a technique for NO{sub x} abatement. The objective was to define optimum conditions under which reburning can be used and to be able to compare the reburning performance of our combustor to those reported by others. For this purpose, a statistically designed parametric investigation was conducted to determine how a set of control… more
Date: December 27, 1988
Creator: Wendt, J. O. L. & Mereb, J. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fundamental studies of fusion plasmas. Annual performance report

Description: Work on ICRF interaction with the edge plasma is reported. ICRF generated convective cells have been established as an important mechanism for influencing edge transport and interaction with the H-mode, and for controlling profiles in the tokamak scrape-off-layer. Power dissipation by rf sheaths has been shown to be significant for some misaligned ICRF and IIBW antenna systems. Near-field antenna sheath work has been extended to the far-field case, important for experiments with low single pass… more
Date: April 27, 1993
Creator: Aamodt, R. E.; Catto, P. J.; D`Ippolito, D. A.; Myra, J. R. & Russell, D. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hanford Atomic Products Operation monthly report, August 1955

Description: This document presents a summary of work and progress at the Hanford Engineer Works for August 1955. The report is divided into sections by department. A plant wide general summary is included at the beginning of the report, after which the departmental summaries begin. The Manufacturing Department reports plant statistics, and summaries for the Metal Preparation, Reactor and Separation sections. The Engineering Department`s section summarizes work for the Technical, Design, and Project Section… more
Date: September 27, 1955
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Y-12 development organization technical progress report. Part 4, Assembly technology/compatibility and surveillance period ending September 30, 1993

Description: The Super Collider is a high-energy scientific instrument composed of a 53-mile-long ring of proton accelerators designed to collide protons and evaluate the emanating particles. The Oak Ridge Y-12 Plant is under contract to perform work for the Superconducting Super Collider Laboratory (SSCL) and has been asked to develop manufacturing processes for components of the gammas, electrons, muons (GEM) detector. Three welded subassemblies are involved in the fabrication of these conductors. The sup… more
Date: December 27, 1993
Creator: Northcutt, W. G. Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Enhancing the use of coals by gas reburning-sorbent injection. Quarterly report no. 8-A, June 1--August 31, 1989

Description: The objective of this project is to evaluate and demonstrate a cost effective emission control technology for acid rain precursors, oxides of nitrogen (NO{sub x}) and sulfur (SO{sub x}), on three coal fired utility boilers in Illinois. The units selected are representative of pre-NSPS design practices: tangential, wall, and cyclone fired. The specific objectives are to demonstrate reductions of 60 percent in NO{sub x} and 50 percent in SO{sub x} emissions, by a combination of two developed tech… more
Date: September 27, 1989
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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