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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

An automated tool for evaluating compliance and providing assistance with building energy standards during design

Description: In an effort to encourage the maximum cost-effective level of energy efficiency in new building design, energy-efficiency standards have become more location-specific and performance-based. As a result, standards often provide more than one path for ensuring and demonstrating that a design complies, but at the cost of increased complexity. In addition, the burden of remedying a noncompliant design rests on the designers' knowledge and experience, with only general guidance provided by the stand… more
Date: April 30, 1992
Creator: Quadrel, R.W.; Brambley, M.R. & Stratton, R.C.
Item Type: Refine your search to only Article
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
open access

ARTI Refrigerant Database

Description: The Refrigerant Database consolidates and facilitates access to information to assist industry in developing equipment using alternative refrigerants. The underlying purpose is to accelerate phase out of chemical compounds of environmental concern. The database provides bibliographic citations and abstracts for publications that may be useful in research and design of air- conditioning and refrigeration equipment. The complete documents are not included, though some may be added at a later date… more
Date: April 30, 1992
Creator: Calm, J.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

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

[Picture and news release: "Lavender Law" Conference draws record numbers; National Lesbian and Gay Law Association names new leadeship]

Description: A picture and a news release from the National Lesbian and Gay Law Association discussing their Lavender Law Conference that drew more attendees than ever and the elections that were held for policies, resolutions, and leaders.
Date: October 30, 1992
Creator: National Lesbian and Gay Law Association
Item Type: Refine your search to only Text
Partner: UNT Libraries Special Collections
open access

The comparison of DYNA3D to approximate solutions for a partially- full waste storage tank subjected to seismic loading

Description: Mathematical solutions to the problem consisting of a partially-full waste tank subjected to seismic loading, embedded in soil, is classically difficult in that one has to address: soil-structure interaction, fluid-structure interaction, non-linear behavior of material, dynamic effects. Separating the problem and applying numerous assumptions will yield approximate solutions. This paper explores methods for generating these solutions accurately.
Date: September 30, 1992
Creator: Zaslawsky, M. & Kennedy, W. N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Characterization of the Defense Waste Processing Facility (DWPF) Environmental Assessment (EA) glass standard reference material. [Site Characterization]

Description: Liquid high-level nuclear waste at the Savannah River Site (SRS) will be immobilized by vitrification in borosilicate glass. The glass will be produced and poured into stainless steel canisters in the Defense Waste Processing Facility (DWPF). Other waste form producers, such as West Valley Nuclear Services (WVNS) and the Hanford Waste Vitrification Project (HWVP), will also immobilize high-level radioactive waste in borosilicate glass. The canistered waste will be stored temporarily at each fac… more
Date: September 30, 1992
Creator: Jantzen, Carol M.; Bibler, N. E. & Beam, D. C.
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

Alternative washing strategy during in-tank precipitation processing

Description: If late washing of precipitate is available, it is possible to modify the normal washing phase of the ITP process so that tank corrosion is prevented by inhibiting with sodium hydroxide rather than sodium nitrite. Hydroxide inhibition has numerous advantages to a hydroxide/nitrite flowsheet.1 However, the rate of hydroxide depletion due to radiolysis and C0[sub 2] absorption were uncertainties. Based on recent experiments and calculations: hydroxide consumption by radiolysis will be 0.01 molar … more
Date: October 30, 1992
Creator: Walker, D. D. & Hobbs, D. T.
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

Plutonium oxide dissolution

Description: Several processing options for dissolving plutonium oxide (PuO[sub 2]) from high-fired materials have been studied. The scoping studies performed on these options were focused on PuO[sub 2] typically generated by burning plutonium metal and PuO[sub 2] produced during incineration of alpha contaminated waste. At least two processing options remain applicable for dissolving high-fired PuO[sub 2] in canyon dissolvers. The options involve solid solution formation of PuO[sub 2] With uranium oxide (U… more
Date: September 30, 1992
Creator: Gray, J. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electrokinetic migration studies on removal of chromium and uranyl ions from 904-A trench soil

Description: This report describes a laboratory-scale study, in which electrokinetic migration technology was used to remove chromium and uranium, as well as other ions, from soil taken from a bore hole adjacent to the 904-A trench at the Savannah River Technology Center. Imposition of an electric current on humid (not saturated) soil successfully caused cations to migrate through the pore water of the soil to the cathode, where they were captured in an ISOLOCKTm polymer matrix and in a cation exchange resi… more
Date: September 30, 1992
Creator: Bibler, J. P.; Meaker, T. F. & O'Steen, A. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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