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H-Area Seepage Basins

Description: During the third quarter of 1990 the wells which make up the H-Area Seepage Basins (H-HWMF) monitoring network were sampled. Laboratory analyses were performed to measure levels of hazardous constituents, indicator parameters, tritium, nonvolatile beta, and gross alpha. A Gas Chromatograph Mass Spectrometer (GCMS) scan was performed on all wells sampled to determine any hazardous organic constituents present in the groundwater. The primary contaminants observed at wells monitoring the H-Area Se… more
Date: December 1, 1990
Creator: Stejskal, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Biological Production of Ethanol From Coal

Description: A batch kinetic study involving Clostridium lungdahlii in a mineral medium was carried out in order to provide baseline data for the effects of nutrients on product ratio and kinetics. The use of this minimal medium containing vitamins, minerals, select amino acids and salts showed both a lower maximum specific growth rate and a lower maximum specific uptake rate than found when using a complex medium supplemented with 0.01% yeast extract. At the same time, the product ratio was improved slight… more
Date: January 1, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Proof of concept testing of an integrated dry injection system for SO sub x /NO sub x control

Description: The objective of the subscale test program were designed to provide sorbent and additive selection guidance, and, in so doing, supply answers to the questions posed in the preceding section. The objectives are: Identify the best commercial hydrate sorbent and the best enhanced hydrate sorbent from a list of nine types, based upon S0{sub 2} removal at Ca/S=2. Determine the relative effectiveness of sodium sesquicarbonate versus sodium bicarbonate for S0{sub 2} and NO{sub x} control over the temp… more
Date: January 1, 1990
Creator: Helfritch, D.J.; Bortz, S.J. (Research-Cottrell, Inc., Somerville, NJ (United States). Environmental Services and Technologies Div.) & Beittel, R. (Riley Stoker Corp., Worcester, MA (United States))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Chemical characterization of CTBN (carboxyl-terminated butadiene/acrylonitrile) and its epoxy adduct

Description: This report describes the analysis of carbonxyl-terminated butadiene (CTB), carboxyl-terminated butadiene/acrylonitrile (CTBN), and a CTBN adduct prepared by reaction with Epon 828. Data from gel permeation chromatography, nuclear magnetic resonance spectroscopy, high performance liquid chromatography, and ion chromatography are presented and discussed. Quantitative methods based on carbon-13 and proton NMR for analyzing CTBN are described. Proton NMR was found to be useful in identifying lots … more
Date: January 1, 1990
Creator: Smith, R.E.
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

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 two coal fired utility boilers in Illinois. The units selected are representative of pre-NSPS design practices: tangential and cyclone fired. Work on a third unit, wall fired, is on hold'' because of funding limitations. The specific objectives are to demonstrate reductions of 60 percent in NO{sub x} and 50 … more
Date: July 19, 1990
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

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 two coal fired utility boilers in Illinois. The units selected are representative of pre-NSPS design practices: tangential and cyclone fired. A third unit, wall fired, is on hold'' because of funding limitations. The specific objectives are to demonstrate reductions of 60 percent in NO{sub x} and 50 percent … more
Date: April 16, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

H-Area Seepage Basins: Groundwater quality assessment report, Savannah River Site

Description: During the second quarter of 1990 the wells which make up the H-Area Seepage Basins (H-HWMF) monitoring network were sampled. Laboratory analyses were performed to measure levels of hazardous constituents, indicator parameters, tritium, nonvolatile beta, and gross alpha. A Gas Chromatograph Mass Spectrometer (GCMS) scan was performed on all wells sampled to determine any hazardous organic constituents present in the groundwater. The primary contaminants observed at wells monitoring the H-Area S… more
Date: September 1, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The thermodynamic properties of 2-methylaniline and trans-(R,S)- decahydroquinoline

Description: Measurements leading to the calculation of the ideal-gas thermodynamic properties for 2-methylaniline and trans-(R,S)-decahydroquinoline are reported. Experimental methods included combustion calorimetry, adiabatic heat-capacity calorimetry, comparative ebulliometry, inclined-piston gauge manometry, and differential-scanning calorimetry (dsc). Entropies, enthalpies, and Gibbs energies of formation were derived for the ideal gas at selected temperatures for both compounds. Critical properties we… more
Date: February 1, 1990
Creator: Steele, W. V.; Chirico, R. D.; Nguyen, A. & Knipmeyer, S. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The search for low photodesorption coatings

Description: Low photo desorption (PSD) from surfaces of vacuum chambers increases the beam lifetime and reduces the cost of the pumping system of any storage ring. In compact rings where all radiated power ({approximately}10 kW) is incident on a few meters only, low PSD and good thermal conductivity of photon absorbers are of particular importance. An experimental chamber in which one meter long bars can be exposed to white photon beam with 500 eV critical energy has been built and installed on the U10B be… more
Date: January 1, 1990
Creator: Foerster, C.L. & Korn, G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

F-Area seepage basins, groundwater quality assessment report, first quarter 1990

Description: During the first quarter of 1990, wells which make up the F-Area Seepage Basins (F-HWMF) monitoring network were sampled. Laboratory analyses were performed to measure levels of hazardous constituents, indicator parameters, tritium, gross alpha, and nonvolatile beta. The primary contaminants observed at wells monitoring the F-Area Seepage Basins are tritium, nitrate, cadmium, lead, total radium, gross alpha, and nonvolatile beta. Concentrations of at least one of the following constituents: tri… more
Date: June 1, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Photoinitiated electron transfer in multi-chromophoric species: Synthetic tetrads and pentads

Description: This research project involves the design, synthesis and study of the molecules which mimic many of the important aspects of photosynthetic electron and energy transfer. Specifically, the molecules are designed to mimic the following aspects of natural photosynthetic multistep electron transfer: electron donation from a tetrapyrrole excited singlet state, electron transfer between tetrapyrroles, electron transfer from tetrapyrroles to quinones, and electron transfer between quinones with differ… more
Date: February 14, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Current emission trends for nitrogen oxides, sulfur dioxide, and volatile organic compounds by month and state: Methodology and results

Description: This report presents estimates of monthly sulfur dioxide (SO{sub 2}), nitrogen oxides (NO{sub x}), and nonmethane voltatile organic compound (VOC) emissions by sector, region, and state in the contiguous United States for the years 1975 through 1988. This work has been funded as part of the National Acid Precipitation Assessment Program's Emissions and Controls Task Group by the US Department of Energy (DOE) Office of Fossil Energy (FE). The DOE project officer is Edward C. Trexler, DOE/FE Offi… more
Date: August 1, 1990
Creator: Kohout, E. J.; Miller, D. J.; Nieves, L. A.; Rothman, D. S.; Saricks, C. L.; Stodolsky, F. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Preliminary evaluation of an electromagnetic concept for simultaneous NO sub x /SO sub 2 removal

Description: Western Research Institute is developing concepts to use radio frequency (RF) energy to remove NO and SO{sub 2} from combustion flue gas. Char produced from the mild gasification of coal can be heated with RF energy to react with sulfur oxides and nitric oxide at low temperatures and pressures using RF energy to form carbon dioxide, carbon monoxide, elemental sulfur, and nitrogen.
Date: December 1, 1990
Creator: Grimes, R. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analysis of soil and water at the Four Mile Creek seepline near the F H areas of SRS

Description: Several soil and water samples were collected along the Four Mile Creek (FMC) seepline at the F H Areas of the Savannah River Site. The samples were analyzed for concentrations of metals, radionuclides, and inorganic constituents. The results of the analyses are summarized below for the soil and water samples.
Date: June 20, 1990
Creator: Haselow, J. S.; Harris, M.; Looney, B. B.; Halverson, N. V. & Gladden, J. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Low cost hydrogen/novel membrane technology for hydrogen separation from synthesis gas

Description: The production of hydrogen from synthesis gas made by gasification of coal is expensive. The separation of hydrogen from synthesis gas is a major cost element in the total process. In this report we describe the results of a program aimed at the development of membranes and membrane modules for the separation and purification of hydrogen from synthesis gas. The performance properties of the developed membranes were used in an economic evaluation of membrane gas separation systems in the coal ga… more
Date: October 1, 1990
Creator: Baker, R.W.; Bell, C.M.; Chow, P.; Louie, J.; Mohr, J.M.; Peinemann, K.V. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effects of in-situ oil-shale retorting on water quality near Rock Springs, Wyoming, Volume 1

Description: Experimental in-situ retorting techniques (methods of extracting shale oil without mining) were used from 1969 to 1979 by the Department of Energy's (DOE) Laramie Energy Technology Center (LETC) at a test area near Rock Springs in southwestern Wyoming. The retorting experiments at site 9 have produced elevated concentrations of some contaminants in the ground water. During 1988 and 1989, the US Geological Survey, in cooperation with the US Department of Energy, conducted a site characterization… more
Date: December 1, 1990
Creator: Lindner-Lunsford, J.B.; Eddy, C.A.; Plafcan, M. & Lowham, H.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Forming of silicon nitride by gelcasting

Description: Gelcasting is a near-net-shape forming technique that is applicable to various types of powders. It is accomplished by casting a concentrated suspension of a commercial ceramic powder in a solution of a polymerizable monomer and then polymerizing. The monomer used in the process is acrylamide which undergoes a vinyl polymerization. A filled gel is formed, which is dried and processed further. Gelcasting of alumina, sialon and silicon nitride has been carried out as the principal part of the Oak… more
Date: January 1, 1990
Creator: Omatete, O.O.; Strehlow, R.A. (Oak Ridge National Lab., TN (USA)) & Armstrong, B.L. (Allied-Signal Aerospace Co., Torrance, CA (USA). Garrett Ceramic Components Div.)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The hardness and elastic modulus of TiN films as determined by ultra-low load indentation

Description: The mechanical properties of a series of titanium nitride films on stainless steel substrates have been evaluated using an indentation technique with a mechanical properties microprobe (MPM). The MPM makes possible measurement of film properties without contribution by the substrate material. The titanium nitride films were deposited with a PVD technique known as sputter ion plating (SIP). Deposition substrate bias was varied from 0 to {minus}120 V, while keeping other deposition parameters con… more
Date: January 1, 1990
Creator: O'Hern, M. E.; Oliver, W. C.; McHargue, C. J. (Oak Ridge National Lab., TN (USA)); Rickerby, D. S. & Bull, S. J. (UKAEA Harwell Lab. (UK). Materials Development Div.)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Intramolecular energy transfer reactions in polymetallic

Description: This report is concerned with intramolecular, energy-transfer reactions. The concept of preparing synthetically a complex molecular species, capable of absorbing a photon at one metal center (antenna fragment), transferring that energy to a second metal center (reactive fragment) via a bridging ligand was first reported by our group in 1979. It is now apparent that a major emphasis in inorganic chemistry in the future will involve these types of molecular ensembles. Complexes discussed include … more
Date: November 1, 1990
Creator: Petersen, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mechanistic studies of carbon monoxide reduction

Description: The progress made during the current grant period (1 January 1988--1 April 1990) in three different areas of research is summarized. The research areas are: (1) oxidatively-induced double carbonylation reactions to form {alpha}-ketoacyl complexes and studies of the reactivity of the resulting compounds, (2) mechanistic studies of the carbonylation of nitroaromatics to form isocyanates, carbamates, and ureas, and (3) studies of the formation and reactivity of unusual metallacycles and alkylidene… more
Date: June 12, 1990
Creator: Geoffroy, G.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

(Tribology conferences and forums)

Description: The principal meeting attended during this trip was the Japan International Tribology Conference Nagoya 1990. The conference encompassed a wide range of topics, including the tribology of ceramics, the tribology in high-performance automobiles, and many aspects of lubrication technology. Associated forums were also held on the tribology of advanced ceramics, on solid lubrication, and on automotive lubricants. Presentations made during the latter forum discussed anticipated trends in engine deve… more
Date: November 30, 1990
Creator: Yust, C.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Magnetic resonance studies of photo-induced electron transfer reactions

Description: During the period covered by this report research has been concerned with the application of Fourier Transform Electron Paramagnetic Resonance (FT EPR) in the study of photo-induced electron transfer reactions. Donor molecules used in this investigation have been various porphyrins, whereas quinones were used as acceptor molecules.
Date: December 1, 1990
Creator: van Willigen, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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