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Controlled Synthesis of Polyenes by Catalytic Methods. Progress Report for the period December 1, 1989 - November 30, 1992

Description: A more direct approach to polyenes by the direct polymerization of acetylenes has been achieved. We were able to show that polymerization of acetylene itself can be controlled with a well- characterized alkylidene catalyst, but only if a base such as quinuclidine is present in order to slow down the rate of propagation relative to initiation. (Quinuclidine may also stabilize vinylalkylidene intermediates formed in the reaction). Unfortunately, living polyenes'' were no more stable than isolated… more
Date: November 30, 1992
Creator: Schrock, R. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Selective flotation of fossil resin from western coal

Description: Economic analysis of this fossil resin project mainly focused on the flotation plant which is intended to be designed with data obtained from the current proof-of-concept flotation test program. It is believed that the analysis of this step is fairly accurate. The other two economic aspects of fossil in resin recovery/utilization are refining and marketing. Cost data used for refining were from an estimated base and are believed to have a large variance. Marketing data used were obtained from t… more
Date: March 30, 1992
Creator: Jensen, G. F. & Miller, J. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Theoretical and experimental studies of elementary physics

Description: The experimental high energy physics program is directed toward the execution of experiments that probe the basic constituents of matter and the forces between them. These experiments are carried out at national and international accelerator facilities. At the current time, we are primarily concentrating on the following projects: Direct photon production in hadronic reactions (Fermilab E706); Production of hybrid mesons in the nuclear Coulomb field; The D-Zero experiment at the Tevatron collid… more
Date: April 30, 1992
Creator: Bodek, A.; Ferbel, T.; Melissinos, A. C.; Olsen, S.; Slattery, P.; Tipton, P. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Anaerobic bioprocessing of low-rank coals. [Veillonella alcalescens and Propionibacterium acidipropionici]

Description: The overall goal of this project is to find biological methods to remove carboxylic functionalities from low-rank coals under ambient conditions and to assess the properties of these modified coals towards coal liquefaction. The main objectives of this quarter were: (1) continuation of microbial consortia development, (2) evaluation of the isolated organisms for decarboxylation, (3) selection of best performing culture (known cultures vs. new isolates), and (4) coal decarboxylation using activa… more
Date: January 30, 1992
Creator: Jain, M. K.; Narayan, R. & Han, O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Energy transfer properties and mechanisms

Description: The overall objective of the research carried out under this program is to determine the principles of collisional energy transfer and use them in predictive models and theories. In order to accomplish this goal, energy transfer properties must be determined and then analyzed to discern the underlying principles involved. In this laboratory, the experimental determination of energy transfer parameters is based on techniques that use physical properties to monitor the amount of energy in excited… more
Date: January 30, 1992
Creator: Barker, J. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Photoinitiated electron transfer in multichromophoric species: Synthetic tetrads and pentads featuring diquinone moieties

Description: This project involves the design, synthesis and photophysical study of complex molecular systems engineered to achieve long lived charge separated states by a biomimetic, photoinitiated multistep electron transfer process. The use of these artificial systems to investigate different electron and energy transfer strategies will allow the evolution of more efficient molecular devices for the gathering of light energy and its transformation into chemical potential energy. The three major aspects o… more
Date: April 30, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of a reburning boiler process model

Description: The overall objective of this program is to integrate EER's expertise in boiler reburning performance evaluation into a package of analytical computer tools. Specific objectives of the program are to develop a computational capability with the following features: (1) can be used to predict the impact of gas reburning application on thermal conditions in the boiler radiant furnace, and on overall boiler performance; (2) can estimate gas reburning NO{sub x} reduction effectiveness based on specif… more
Date: January 30, 1992
Creator: Wu, K. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Enhancement of surface properties for coal beneficiation

Description: This report will focus on means of pyrite removal from coal using surface-based coal cleaning technologies. The major subjects being addressed in this study are the natural and modulated surface properties of coal and pyrite and how they may best be utilized to facilitate their separation using advanced surface-based coal cleaning technology. Emphasis is based on modified flotation and oil agglomerative processes and the basic principles involved. The four areas being addressed are: (1) Collect… more
Date: January 30, 1992
Creator: Chander, S. & Aplan, F.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hydrogen Separation by Ceramic Membranes in Coal Gasification

Description: Project Objectives are to develop hydrogen-permselective ceramic membranes for water-gas shift membrane-reactor suitable for hydrogen production from coal gas and evaluate the technical and economic potential of the membrane-reactor. During the reporting period exploratory experiments begun on a membrane preparation technique aimed at providing higher membrane permeance. The new preparation technique involves two stages. The first stage is the formation of a layer of silica gel by a two-phase i… more
Date: April 30, 1992
Creator: Gavalas, G. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Permeability Changes in Coal Resulting From Gas Desorption

Description: This report documents studies on the effects of gas sorption on coal, with the intent of eventually evaluating how sorption and strain affect permeability. These studies were, carried out at the University of Alabama during the period from 1989 through 1992. Two major experimental methods were developed and used. In the strain experiments, electronic strain gauges were attached to polished blocks of coal in order to measure linear and volumetric swelling due to gas sorption. The effects of bedd… more
Date: November 30, 1992
Creator: Levine, J. R. & Johnson, P. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Cloud and aerosol characterization for the ARM central facility: Multiple remote sensor techniques development

Description: This research project designed to investigate how atmospheric remote sensing technology can best be applied to the characterization of the cloudy atmosphere. Our research program addresses basic atmospheric remote sensing questions, but at the same time is clearly directed toward providing information crucial to the ARM (Atmospheric Remote Sensing) program and for application to the Clouds and Radiation Testbed (CART). The instrumentation that is being brought into play includes a variety of ar… more
Date: April 30, 1992
Creator: Sassen, K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mechanism of hydrodenitrogenation

Description: In this project it was proposed that the selectivity of the HDN reaction can be affected by an alteration of the catalyst acidity since it is possible that an acidic Hofmann-like deamination C--N--C bonds. Such a possibility was verified in this work by studying the denitrogenation of piperidine over acidic catalysts, and it was demonstrated that Bronsted acid sites are active for the denitrogenation of N-heterocycles, whereas Lewis sites are not. To better understand the role of acidic sites i… more
Date: November 30, 1992
Creator: Miranda, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Surfactant studies for bench-scale operation

Description: A phase II study has been initiated to investigate surfactant-assisted coal liquefaction, with the objective of quantifying the enhancement in liquid yields and product quality. This publication covers the first quarter of work. The major accomplishments were: (1) the refurbishment of the high-pressure, high-temperature reactor autoclave, (2) the completion of four coal liquefaction runs with Pittsburgh [number sign]8 coal, two each with and without sodium lignosulfonate surfactant, and (3) the… more
Date: December 30, 1992
Creator: Hickey, G.S. & Sharma, P.K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A coal-fired combustion system for industrial process heating applications

Description: This advanced combustion system research program is for the development of innovative coal-fired process heaters which can be used for high temperature melting, smelting and waste vitrification processes. The process heater concepts to be developed are based on advanced glass melting and ore smelting furnaces developed and patented by Vortec Corporation. The process heater systems to be developed have multiple use applications; however, the Phase III research effort is being focused on the deve… more
Date: October 30, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of biological coal gasification (MicGAS process). Nineth quarterly report, [July--September 1992]

Description: Laboratory scale studies examining biogasification of Texas lignite at various coal solids loadings have been completed. Bench scale bioreactors are currently being used to scale up the biogasification process to higher coal solids loadings (5% and 10%) Specific observations reported this quarter are that methane production was not curtailed when B-vitamin solution was not added to the biogasification medium and that aeration of Mic-1 did not sufficiently oxidize the medium to eliminate strict … more
Date: October 30, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

DC CICC retrofit magnet. Quarterly progress report, July 1992

Description: The coil system presented here for the MHD retrofit magnet incorporates many features of the latest in superconducting magnet technology and finite element modeling to create an efficient and viable design concept. At the core of the design is the niobium titanium (NbTi) superconducting Cable-in-Conduit Conductor (CICC). Engineered to create moderately high magnetic fields (up to 8 T) with essentially no power loss, this specific CICC design provides good load carrying capacity, operating margi… more
Date: October 30, 1992
Creator: Myatt, R. L. & Marston, P. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Permeability Changes in Coal Resulting From Gas Desorption. Final Report

Description: This report documents studies on the effects of gas sorption on coal, with the intent of eventually evaluating how sorption and strain affect permeability. These studies were, carried out at the University of Alabama during the period from 1989 through 1992. Two major experimental methods were developed and used. In the strain experiments, electronic strain gauges were attached to polished blocks of coal in order to measure linear and volumetric swelling due to gas sorption. The effects of bedd… more
Date: November 30, 1992
Creator: Levine, J. R. & Johnson, P. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Photoinitiated electron transfer in multichromophoric species: Synthetic tetrads and pentads featuring diquinone moieties. Technical progress report, September 1, 1991--30 April 1992

Description: This project involves the design, synthesis and photophysical study of complex molecular systems engineered to achieve long lived charge separated states by a biomimetic, photoinitiated multistep electron transfer process. The use of these artificial systems to investigate different electron and energy transfer strategies will allow the evolution of more efficient molecular devices for the gathering of light energy and its transformation into chemical potential energy. The three major aspects o… more
Date: April 30, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Energy transfer properties and mechanisms. Technical progress report

Description: The overall objective of the research carried out under this program is to determine the principles of collisional energy transfer and use them in predictive models and theories. In order to accomplish this goal, energy transfer properties must be determined and then analyzed to discern the underlying principles involved. In this laboratory, the experimental determination of energy transfer parameters is based on techniques that use physical properties to monitor the amount of energy in excited… more
Date: January 30, 1992
Creator: Barker, J. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hydrodynamic controls on particle transport through heterogeneous porous media. Technical progress report

Description: The initial stages of this project have been focused on equipment development and preliminary experimental efforts. Among the accomplishments to date are the development of a successful flow cell design, proof of the utility of the UV resin, adjustment of the Laser Particle Counter to produce reliable readings, installation of a low particle content water supply, installation of a microscope for viewing discharge samples, development of a fiber/rod optic system for freezing the UV resin in situ… more
Date: September 30, 1992
Creator: Silliman, S. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Enhancement of surface properties for coal beneficiation. Final report

Description: This report will focus on means of pyrite removal from coal using surface-based coal cleaning technologies. The major subjects being addressed in this study are the natural and modulated surface properties of coal and pyrite and how they may best be utilized to facilitate their separation using advanced surface-based coal cleaning technology. Emphasis is based on modified flotation and oil agglomerative processes and the basic principles involved. The four areas being addressed are: (1) Collect… more
Date: January 30, 1992
Creator: Chander, S. & Aplan, F. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Anaerobic bioprocessing of low-rank coals. Quarterly progress report, October 1--December 31, 1991

Description: The overall goal of this project is to find biological methods to remove carboxylic functionalities from low-rank coals under ambient conditions and to assess the properties of these modified coals towards coal liquefaction. The main objectives of this quarter were: (1) continuation of microbial consortia development, (2) evaluation of the isolated organisms for decarboxylation, (3) selection of best performing culture (known cultures vs. new isolates), and (4) coal decarboxylation using activa… more
Date: January 30, 1992
Creator: Jain, M. K.; Narayan, R. & Han, O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Theoretical and experimental studies of elementary physics. Annual technical progress report

Description: The experimental high energy physics program is directed toward the execution of experiments that probe the basic constituents of matter and the forces between them. These experiments are carried out at national and international accelerator facilities. At the current time, we are primarily concentrating on the following projects: Direct photon production in hadronic reactions (Fermilab E706); Production of hybrid mesons in the nuclear Coulomb field; The D-Zero experiment at the Tevatron collid… more
Date: April 30, 1992
Creator: Bodek, A.; Ferbel, T.; Melissinos, A. C.; Olsen, S.; Slattery, P.; Tipton, P. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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