Resource Type

The effect of soil mineral phases on the abiotic degradation of selected organic compounds. Progress report, June 31, 1990--May 31, 1993 (open access)

The effect of soil mineral phases on the abiotic degradation of selected organic compounds. Progress report, June 31, 1990--May 31, 1993

Tetraphenylborate (TPB) is used to precipitate radioactive 137Cs from high-level nuclear waste water at the Defense Waste Processing Facility (DWPF) operated by the US DOE at the Savannah River Plant (SRP). The process is part of the procedure for the glassification of high-level nuclear waste in preparation for its long-term geological disposal. The decontaminated waste water contains millimolar quantities of TPB that will be processed into salt concretions. The transporation and use of large amounts of TPB can potentially result in the release of TPB into soil or aquatic environments. Previous study has shown that TPB degrades in soils to initially form diphenylborinic acid (DPBA) and biphenyl. DPBA appears to degrade further into other unidentified compounds which subsequently degrade into inorganic boron. The factors which promote the abiotic degradation of TPB need to be investigated since this chemical is used in the processing of radioactive wastes. TPB and its intermediate product, DPBA, have been reported to be toxic to microorganisms and plants, dependent on soil or water environments for their survival and growth.
Date: May 31, 1993
Creator: Sandhu, S. S.
System: The UNT Digital Library
Feasibility Study of Health Effect in Pinellas area. Progress report, September 1, 1992--August 31, 1993 (open access)

Feasibility Study of Health Effect in Pinellas area. Progress report, September 1, 1992--August 31, 1993

This report describes the progress and the plan of activities in the Feasibility Study of Health Effect in populations residing near the Pinellas Plant. The period covered by the work progress is September 1, 1992 through April 30, 1993 and the period covered by the plan of the project activities is May 1 through August 31, 1993.
Date: May 31, 1993
Creator: unknown
System: The UNT Digital Library
Investigation of physical structures and interactions at high energy. Progress report, June 1, 192--May 31, 1992 (open access)

Investigation of physical structures and interactions at high energy. Progress report, June 1, 192--May 31, 1992

This report contains discussions on the following topics: Experimental program at the Fermilab Tevatron Collider: FNAL E-740; Experimental program at the superconducting super collider: Solenoidal detector collaboration; Computation development program at Iowa State University: Batch after twilight running and parallel processing; Experimental program at the University of Hawaii: Deep underwater muon and neutrino detector; Global analysis of parton distributions; high energy direct photon production; photon fragmentation functions; single transverse-spin asymmetry; associated production of Higgs Boson at collider energies; Cronin effect in photoproduction and deeply inelastic scattering; and heavy meson production.
Date: May 31, 1993
Creator: Anderson, W. E.; Hauptman, J. M. & Qui, J.
System: The UNT Digital Library
Idaho National Engineering Laboratory installation roadmap document. Revision 1 (open access)

Idaho National Engineering Laboratory installation roadmap document. Revision 1

The roadmapping process was initiated by the US Department of Energy`s office of Environmental Restoration and Waste Management (EM) to improve its Five-Year Plan and budget allocation process. Roadmap documents will provide the technical baseline for this planning process and help EM develop more effective strategies and program plans for achieving its long-term goals. This document is a composite of roadmap assumptions and issues developed for the Idaho National Engineering Laboratory (INEL) by US Department of Energy Idaho Field Office and subcontractor personnel. The installation roadmap discusses activities, issues, and installation commitments that affect waste management and environmental restoration activities at the INEL. The High-Level Waste, Land Disposal Restriction, and Environmental Restoration Roadmaps are also included.
Date: May 30, 1993
Creator: unknown
System: The UNT Digital Library
Combustion synthesis and engineering of nanoparticles for electronic, structural and superconductor applications (open access)

Combustion synthesis and engineering of nanoparticles for electronic, structural and superconductor applications

Fully dense, nanocrystalline ceramic articles were prepared by the new nanofabrication process. The process consists of two steps: synthesis of ceramic nanoparticles and fabrication of dense, nanocrystalline ceramic parts. The synthesis step produced 10-nanometer-diameter crystallites, and is capable of being scaled up to kilogram/hour production rates. The fabrication step produced dense parts at significantly reduced sintering temperatures and times -- representing a factor of 10--100 reduction in process energy requirements. The process was demonstrated by producing ultrafine-grained yttria-stabilized ZrO[sub 2], an important material with a variety of energy-related applications (solid electrolytes, oxygen sensors, electrode materials, thermal barrier coatings, etc.). Results from this period clearly illustrate the capabilities of this energy-efficient and directly commercializable process for producing dense, nanocrystalline, multicomponent oxide ceramics.
Date: May 28, 1993
Creator: Stangle, G.C.; Amarakoon, V.R.W. & Schulze, W.A.
System: The UNT Digital Library
Combustion synthesis and engineering of nanoparticles for electronic, structural and superconductor applications. Annual progress report, December 1, 1992--May 31, 1993 (open access)

Combustion synthesis and engineering of nanoparticles for electronic, structural and superconductor applications. Annual progress report, December 1, 1992--May 31, 1993

Fully dense, nanocrystalline ceramic articles were prepared by the new nanofabrication process. The process consists of two steps: synthesis of ceramic nanoparticles and fabrication of dense, nanocrystalline ceramic parts. The synthesis step produced 10-nanometer-diameter crystallites, and is capable of being scaled up to kilogram/hour production rates. The fabrication step produced dense parts at significantly reduced sintering temperatures and times -- representing a factor of 10--100 reduction in process energy requirements. The process was demonstrated by producing ultrafine-grained yttria-stabilized ZrO{sub 2}, an important material with a variety of energy-related applications (solid electrolytes, oxygen sensors, electrode materials, thermal barrier coatings, etc.). Results from this period clearly illustrate the capabilities of this energy-efficient and directly commercializable process for producing dense, nanocrystalline, multicomponent oxide ceramics.
Date: May 28, 1993
Creator: Stangle, G. C.; Amarakoon, V. R. W. & Schulze, W. A.
System: The UNT Digital Library
Engineering development of advanced coal-fired low-emission boiler system (open access)

Engineering development of advanced coal-fired low-emission boiler system

The Pittsburgh Energy Technology Center of the US Department of Energy (DOE) has contracted with Combustion Engineering, Inc. (ABB CE) to perform work on the Engineering Development of Advanced Coal-Fired Low-Emission Boiler Systems'' Project and has authorized ABB CE to complete Phase I on a cost-reimbursable basis. The overall objective of the Project is the expedited commercialization of advanced coal-fired low-emission boiler systems. The specified primary objectives are: (1) NOx emissions not greater than one-third NSPS. (2) SOx emissions not greater than one-third NSPS. (3) Particulate emissions not greater than one-half NSPS. The specific secondary objectives are: (1) Improved ash disposability and reduced waste generation. (2) Reduced air toxics emissions. (3) Increased generating efficiency. The final deliverables are a design data base that will allow future coal-fired power plants to meet the stated objectives and a preliminary design of a commercial generation unit.
Date: May 28, 1993
Creator: unknown
System: The UNT Digital Library
Engineering development of advanced coal-fired low-emission boiler system. Technical progress report No. 2, January--March 1993 (open access)

Engineering development of advanced coal-fired low-emission boiler system. Technical progress report No. 2, January--March 1993

The Pittsburgh Energy Technology Center of the US Department of Energy (DOE) has contracted with Combustion Engineering, Inc. (ABB CE) to perform work on the ``Engineering Development of Advanced Coal-Fired Low-Emission Boiler Systems`` Project and has authorized ABB CE to complete Phase I on a cost-reimbursable basis. The overall objective of the Project is the expedited commercialization of advanced coal-fired low-emission boiler systems. The specified primary objectives are: (1) NOx emissions not greater than one-third NSPS. (2) SOx emissions not greater than one-third NSPS. (3) Particulate emissions not greater than one-half NSPS. The specific secondary objectives are: (1) Improved ash disposability and reduced waste generation. (2) Reduced air toxics emissions. (3) Increased generating efficiency. The final deliverables are a design data base that will allow future coal-fired power plants to meet the stated objectives and a preliminary design of a commercial generation unit.
Date: May 28, 1993
Creator: unknown
System: The UNT Digital Library
Highly dispersed catalysts for coal liquefaction. Quarterly report No. 6, November 23, 1992--February 22, 1993 (open access)

Highly dispersed catalysts for coal liquefaction. Quarterly report No. 6, November 23, 1992--February 22, 1993

The objectives of this project are to study the effect of pretreatment methods on the two-stage liquefaction process. In particular the effects of dispersed catalysts and carbon monoxide atmospheres on a coal liquefaction process. The project is divided into three technical tasks. Task 1 and 2 deal with the analyses and liquefaction experiments, respectively, whereas Task 3 deals with the economic impact of utilizing the pretreatment methods. This quarter concentrated on Tasks 1 and 2. which are summarized below. The fractionated products from the coal liquefaction experiments conducted in Task 2 exhibited a very low H/C ratio, most likely due to the low H/C ratio of the Black Thunder recycle vehicle used in these liquefaction experiments. Wilsonville has reported the recycle vehicle as approximately 20% distillable material (1100{degree}F at one atmosphere), 20% insoluble material (CI) and 40% resid. We are now in the process of fractionating this material in order to determine its contribution to our liquefaction results. We also analyzed some of the sulfated iron catalysts for surface areas, finding that the calcined catalyst had surface areas of 76 m{sup 2}/g, compared to 6 m{sup 2}/g for the iron oxide used by Wilsonville. We also synthesized two more catalysts, …
Date: May 28, 1993
Creator: Hirschon, A. S. & Wilson, R. B.
System: The UNT Digital Library
Cutting and drilling studies using high power visible lasers (open access)

Cutting and drilling studies using high power visible lasers

High power and radiance laser technologies developed at Lawrence Livermore National Laboratory such as copper-vapor and dye lasers show great promise for material processing tasks. Evaluation of models suggests significant increases in welding, cutting, and drilling capabilities, as well as applications in emerging technologies such as micromachining, surface treatment, and stereolithography. Copper lasers currently operate at 1.8 kW output at approximately three times the diffraction limit and achieve mean time between failures of more than 1,000 hours. Dye lasers have near diffraction limited beam quality at greater than 1.0 kW. Results from cutting and drilling studies in titanium and stainless steel alloys show that cuts and holes with extremely fine features can be made with dye and copper-vapor lasers. High radiance beams produce low distortion and small heat-affected zones. The authors have accomplished very high aspect ratios (> 60:1) and features with micron scale (5-50 {mu}m) sizes. The paper gives a description of the equipment; discusses cutting theory; and gives experimental results of cutting and drilling studies on Ti-6Al-4V and 304 stainless steel.
Date: May 27, 1993
Creator: Kautz, D. D.; Dragon, E. P.; Werve, M. E.; Hargrove, R. S. & Warner, B. E.
System: The UNT Digital Library
D0 Solenoid Upgrade Project: Chimney LN2 Radiation Shield Attachment Area Calculation (open access)

D0 Solenoid Upgrade Project: Chimney LN2 Radiation Shield Attachment Area Calculation

A short calculation was done to check the attachment method of the radiation shield to it's LN2 cooling tubes. The case considered was only for the obround chimney section. The proposed attachment method was to use 1/8-inch plug welds spaced every 5-inch along the length of the shield. The calculations were done conservatively for 6-inch spacing between plug welds. The criteria used was that the LN2 shield warmest temperature be less than 2 K above the temperature of the LN2 fluid. Using a very conservative heat transfer model. the calculations predict that the warmest temperature on the radiation shield will be < 1.4 K warmer than the LN2 fluid temperature.
Date: May 26, 1993
Creator: Rucinski, R.
System: The UNT Digital Library
D0 Solenoid Upgrade Project: Heat Load Calculations for the Solenoid Chimney (open access)

D0 Solenoid Upgrade Project: Heat Load Calculations for the Solenoid Chimney

This engineering note documents the calculations done to determine the chimney heat loads. These heat load numbers were reported in the D0 solenoid upgrade design report. The heat loads to the LN2 circuit were done by Andrew Stefanik, RDIMechanical Systems group. They were part of his LN2 shield calculations dated 2/23/93. Pages 1 thru 3 of his calculations that apply to the chimney are attached. The heat loads to the LHe circuit were done originally on 12/16/92 and then revised on 12/23/92 to be more conservative. The raw calculations are attached. I include both the original 12/16 version and the 12/23 revised version to document the amount of conservativeness added.
Date: May 26, 1993
Creator: Rucinski, R.
System: The UNT Digital Library
D0 Solenoid Upgrade Project: Rectangular Liquid Helium Tube, Miscellaneous Information (open access)

D0 Solenoid Upgrade Project: Rectangular Liquid Helium Tube, Miscellaneous Information

This engineering note contains miscellaneous information about the rectangular liquid helium supply tube for the D-Zero solenoid. The information is fairly superficial, but could be used as a starting point for a future engineer who is going to specify and puchase the tubing. The chimney contains 4 conductors attached to an aluminum liquid helium supply tube. Because good thermal contact is desired, the tube will have flat sides. Aluminum is chosen to match the thermal contraction coefficient of the superconductor's aluminum stabilizer. The type of aluminum is chosen as 6061-T6 because it's allowable stress in ANSI/ASME B31.3 is higher than for other alloys. A different alloy could be chosen for extrusion reasons. The highest pressures this tubing should see will be during a quench. Current calculations predict the peak pressure during a quench to be 520 psi a for one-way relieving and 250 psia for two way relieving. Whatever the final alloy selection, the tubing needs to have a high enough allowable working pressure. There is very little room in the obround section of the chimney. In that portion the shape is rectangular, 12.7 mm (0.50-inch) x 31.8 mm (1.25-inch). A drawing shows the flow path cross section. This also …
Date: May 26, 1993
Creator: Rucinski, R.
System: The UNT Digital Library
D0 Solenoid Upgrade Project: Solenoid Insulatiing Vacuum Vessels; Relief Path Capacity Calculation (open access)

D0 Solenoid Upgrade Project: Solenoid Insulatiing Vacuum Vessels; Relief Path Capacity Calculation

This engineering note documents the calculations done to determine the relief capacity of the solenoid vacuum pumping line. The calculations were done by David Bell, a co-op student from the University of Wisconsin. The calculations are attached. The conclusion is that the vacuum pumping line has a venting capacity of 129 g/s warm helium or 298 g/s warm nitrogen. Both of these capacities are much larger than the expected operating mass flow rates of the liquid helium (5 to 15 g/s) or liquid nitrogen (2 or 3 g/s) circuits. The calculations assume the solenoid vacuum vessel is at 3 psig and the relief plate is set at 1.5 psig. Additional calculations were done to prove that the venting capacity of the vacuum pumping line exceeded flowrates due to a failure mode. These calculations are attached. Since the system is not finalized, (pipe sizes not determined, components sized...) the calculations were done by first picking reasonable line sizes based on known allowed pressure drops in the system and then doing a maximum delivery rate calculation if a line was completely severed in the vacuum space of the solenoid/control dewar. The numbers from these calculations say that failure mode flow rates are …
Date: May 26, 1993
Creator: Rucinski, R. & Bell, D.
System: The UNT Digital Library
Development of a plasma coating system for induction melting zirconium in a graphite crucible (open access)

Development of a plasma coating system for induction melting zirconium in a graphite crucible

A plasma coating system has been developed for induction melting zirconium at 1900 C using a graphite crucible. This laminated coating system consists of plasma spraying the following materials onto the graphite: (1) molybdenum or tungsten, (2) a 50% blend by weight of the metal powder and calcia-stabilized zirconium oxide, and (3) calcia-stabilized zirconia followed by painting a final coating of nonstabilized zirconia on top of the plasma-sprayed coating system. Zirconium was melted in argon using both laminating systems without any degradation of the graphite crucible and with only a minimal amount of carbon absorption. This novel approach that is being proposed as an alternative method of melting zirconium alloys offers substantial cost savings over the standard practice of electric arc melting using a consumable electrode.
Date: May 26, 1993
Creator: Bird, E. L. & Holcombe, Jr. C. E.
System: The UNT Digital Library
Military and diplomatic roles and options for managing and responding to the proliferation of ballistic missiles and weapons of mass destruction. Final report: Program on Stability and the Offense/Defense Relationship (open access)

Military and diplomatic roles and options for managing and responding to the proliferation of ballistic missiles and weapons of mass destruction. Final report: Program on Stability and the Offense/Defense Relationship

The March seminar, ``Military and Diplomatic Roles and Options`` for managing and responding to proliferation, featured three presentations: the military and diplomatic implications of preemptive force as a counterproliferation option; an in-depth assessment of the threat posed by biological weapons; and, a new proposed US counterproliferation policy.
Date: May 26, 1993
Creator: Hallenbeck, R. A.; Gill, J. M. & Murray, B. L.
System: The UNT Digital Library
Cratering rates from lunar xenospherules (open access)

Cratering rates from lunar xenospherules

The goal of this project is to obtain the time history of impacts on the moon, with emphasis on recent impacts. In particular, the project could prove (or disprove) the existence of comet sores and provide the dates when they occurred.
Date: May 25, 1993
Creator: Muller, R. A.
System: The UNT Digital Library
D0 Solenoid Upgrade Project: Pressure Ratings for Some Chimney and Control Dewar Componenets (open access)

D0 Solenoid Upgrade Project: Pressure Ratings for Some Chimney and Control Dewar Componenets

Pressure rating calculations were done for some of the chimney and control dewar components. This engineering note documents these calculations. The table below summarizes the components looked at, and what pressure rating are. The raw engineering calculations for each of the components is given.
Date: May 25, 1993
Creator: Rucinski, R.
System: The UNT Digital Library
Electric power monthly, May 1993 (open access)

Electric power monthly, May 1993

The Electric Power Monthly (EPM) is prepared by the Survey Management Division; Office of Coal, Nuclear, Electric and Alternate Fuels, Energy Information Administration (EIA), Department of Energy. This publication provides monthly statistics at the US, Census division, and State levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity sales, revenue, and average revenue per kilowatthour of electricity sold. Data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions.
Date: May 25, 1993
Creator: unknown
System: The UNT Digital Library
High temperature alkali corrosion of ceramics in coal gas. Quarterly progress report No. 7, March 1, 1993--June 1, 1993 (open access)

High temperature alkali corrosion of ceramics in coal gas. Quarterly progress report No. 7, March 1, 1993--June 1, 1993

Corrosion kinetics of SiC were investigated from 950 to 1100C at 0.63 vol% alkali vapor concentration. Corrosion rate in alkali is 10{sup 4} to 10{sup 5} times faster than oxidation rate of SiC in air. Activation energy of the alkali corrosion is 406 kj/mol, indicating a high sensitivity to temperature changes. Overall reaction appears to be controlled by the oxidation of SiC. The alkali corrosion kinetics of Si{sub 3}N{sub 4} from 950 to 1050{degrees}C were also examined in the same atmosphere (0.63 vol% alkali vapors). Reaction thickness of Si{sub 3}N{sub 4} appears to vary linearly with reaction time from 950 to 1050C, suggesting that the alkali corrosion process is controlled by the oxidation of Si{sub 3}N{sub 4}. At 1050{degrees}C, the alkali-enhanced oxidation of Si{sub 3}N{sub 4} is approximately 10{sup 7} times faster than the oxidation of Si{sub 3}N{sub 4} in dry oxygen. Compared to SiC corroded in the same alkali atmosphere, Si{sub 3}N{sub 4} seems to be less alkali-resistant than SiC. Phase relations of the Na{sub 2}O-Al{sub 2}TiO{sub 5} vertical section from 5--40 wt% Na{sub 2}O and 840-1100C were studied. Phase analysis indicates that this section is not a true binary system. A tentative phase diagram for the Na{sub 2}O-Al{sub …
Date: May 25, 1993
Creator: Pickrell, G. R.; Sun, T. & Brown, J. J.
System: The UNT Digital Library
Inhibition of retrogressive reactions in coal/petroleum co-processing. Final technical report (open access)

Inhibition of retrogressive reactions in coal/petroleum co-processing. Final technical report

The objective of this study was to examine the processes in coal/petroleum coprocessing systems which led to coke formation. Specifically, the interactions between the petroleum residue and coal, leading to retrogressive products, were investigated. Five coals were reacted with five model compounds in order to investigate the coal conversions in a variety of solvents and to determine the role of the solvent in promoting or inhibiting coal conversion. The selected model compounds range from paraffinic to fully aromatic and were chosen as representative of types of compounds that are found in petroleum residua. Coprocessing experiments were conducted using the five coals and three petroleum residua. The effect of temperature on coal conversions was crucial. The coal conversions at 350 and 400{degree}C seem to be governed by the nature of the coal and to a lesser extent by the petroleum residua. Negative coal conversions were observed above 400{degree}C indicating that retrogressive processes had occurred. At temperatures higher than 400{degree}C, the petroleum residua undergo physical and chemical transformations and the influence of the petroleum residua on coal conversions is significant. The structural features of the residues indicated that the residues were predominately coal-derived. An overall increase in aromaticity was observed with increasing …
Date: May 25, 1993
Creator: Schobert, H. H. & Tomic, J.
System: The UNT Digital Library
Quasi-elastic neutron scattering studies of protein dynamics (open access)

Quasi-elastic neutron scattering studies of protein dynamics

Results that shed new light on the study of protein dynamics were obtained by quasi-elastic neutron scattering. The triple axis instrument H-9 supplied by the cold source was used to perform a detailed study of the quasi-elastic spectrum and the Debye-Waller factor for trypsin in powder form, in solution, and in crystals. A preliminary study of myoglobin crystals was also done. A new way to view the results of quasi-elastic scattering experiments is sketched, and the data on trypsin are presented and analyze according to this new picture.
Date: May 25, 1993
Creator: Rorschach, H.E.
System: The UNT Digital Library
Quasi-elastic neutron scattering studies of protein dynamics. Progress report, November 1, 1992--May 25, 1993 (open access)

Quasi-elastic neutron scattering studies of protein dynamics. Progress report, November 1, 1992--May 25, 1993

Results that shed new light on the study of protein dynamics were obtained by quasi-elastic neutron scattering. The triple axis instrument H-9 supplied by the cold source was used to perform a detailed study of the quasi-elastic spectrum and the Debye-Waller factor for trypsin in powder form, in solution, and in crystals. A preliminary study of myoglobin crystals was also done. A new way to view the results of quasi-elastic scattering experiments is sketched, and the data on trypsin are presented and analyze according to this new picture.
Date: May 25, 1993
Creator: Rorschach, H. E.
System: The UNT Digital Library
Applications of advanced petroleum production technology and water alternating gas injection for enhanced oil recovery -- Mattoon Oil Field, Illinois. First quarterly technical progress report, 1993 (open access)

Applications of advanced petroleum production technology and water alternating gas injection for enhanced oil recovery -- Mattoon Oil Field, Illinois. First quarterly technical progress report, 1993

For work during the first quarter of 1993, American Oil Recovery, Inc. targeted completion of the following specific objectives: Convene meetings of Mattoon Project subcontractors in order to plan and coordinate Project activities. Confirm organizational arrangements and plans for implementation of Mattoon Project. Complete most work on detailed analysis of reservoir geology of productive leases in the Mattoon Project. Identify first Facies Defined Subunit for initial injectivity testing to be commenced near the beginning of the second quarter. Identify additional Facies Defined Subunits for injectivity testing and characterization during the second and third quarters. Award subcontract to the Illinois State Geological Survey and commence work on preparation of a geostatistical model (STRATAMODEL) of more than 100 wells on 1,000 acres within the Mattoon Project Area. Obtain oil samples from wells in the identified Facies Subunit for reservoir rock, fluid, and CO{sub 2} compatibility testing by the Illinois State Geological Survey. Design CO{sub 2} injection pumps and injection monitoring equipment configuration. Obtain bids for required pumps and diesel motor. Accomplishments for this quarter are reported.
Date: May 24, 1993
Creator: Baroni, M. R.
System: The UNT Digital Library