Serial/Series Title
Electrofuels Program
8
Field Demonstration of a Membrane Process to Separate Nitrogen From Natural Gas Progress Report
6
Winter Fuels Report
4
ARM Facilities Newsletter
3
BEEST Program
3
Fiscal Year 2000
3
Fiscal Year 2005
3
Fiscal Year 2007
3
Petroleum Marketing Monthly
3
Establishment of an Industry-Driven Consortium Focused on Improving the Production Performance of Domestic Stripper Wells Quarterly Report
2
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3,859 Matching Results
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Integrated dry NO sub x /SO sub 2 emissions control system
This project's goal is to demonstrate the removal up to 70% of the NO{sub x} and 70% of the SO{sub 2} emissions from coal fired utility boilers. It will establish an alternative emissions control technology integrating a combination of several processes, while minimizing capital expenditures and limiting waste production to dry solids that are handled with convention ash removal equipment. These processes include low-NO{sub x} burners and urea injection for NO{sub x} control, sodium- or calcium-based sorbent injection for SO{sub 2} control, and flue gas humidification to enhance the reactivity of the SO{sub 2} control compound.
Date:
September 10, 1991
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Infrared and Raman investigation of rare-earth phosphate glasses for potential use as radioactive waste forms
This project was designed to investigate the properties of the rare-earth phosphate glasses CeO{sub 2}-P{sub 2}O{sub 5} and Pr{sub 2}O{sub 3}-P{sub 2}O{sub 5} for potential use as radioactive waste glasses. The research involved determination of the glass-forming region, loading capacity, and optimum processing parameters of the glasses. Structural studies of the unloaded host glasses and glasses loaded with simulated waste elements were to be done using Raman, infrared and infrared reflection spectroscopy. Leach testing and spectroscopic studies of the corroded surfaces were also to be performed.
Date:
November 10, 1986
Creator:
Morgan, S.
Object Type:
Report
System:
The UNT Digital Library
Demonstration salt gradient solar pond. Fourth semiannual progress report, November 1, 1978-June 30, 1979
A thorough account is given of a solar pond study underway at the University of New Mexico since 1975. This report consists of the Ph.D. dissertation of Federica Zangrando entitled Observation and Analysis of a Full-Scale Experimental Salt Gradient Solar Pond. The stability condition for a non-constant gradient, doubly-diffusive system is derived and a prescription for the routine detection of potential instabilities is presented. Techniques for handling unstable regions are described. Conclusions so far strongly support the viability of the solar pond concept. Salt gradient ponds appear to have a very definite niche in the ecology of energy production.
Date:
July 10, 1979
Creator:
Zangrando, F. & Bryant, H.C.
Object Type:
Report
System:
The UNT Digital Library
Understanding and accepting fusion as an alternative energy source
Fusion, the process that powers our sun, has long promised to be a virtually inexhaustible source of energy for mankind. No other alternative energy source holds such bright promise, and none has ever presentd such formidable scientific and engineering challenges. Serious research efforts have continued for over 30 years in an attempt to harness and control fusion here on earth. Scientists have made considerable progress in the last decade toward achieving the conditions required for fusion power, and recent experimental results and technological progress have made the scientific feasibility of fusion a virtual certainty. With this knowledge and confidence, the emphasis can now shift toward developing power plants that are practical and economical. Although the necessary technology is not in hand today, the extension to an energy producing system in 20 years is just as attainable as was putting a man on the moon. In the next few decades, the world's population will likely double while the demand for energy will nearly quadruple. Realistic projections show that within the next generation a significant fraction of our electric power must come from alternative energy sources. Increasing environmental concerns may further accelerate this timetable in which new energy sources must be introduced. …
Date:
December 10, 1987
Creator:
Goerz, D.A.
Object Type:
Article
System:
The UNT Digital Library
Clearinghouses and informaion resources offering utility-related products and services
This report, designed for use within the utility community, offers informative descriptions of some of the more relevant organizations engaged in providing information concerned with utility rate regulation. Eighteen information profiles are structured to include the name, address, and telephone number of each of the organizations, and where appropriate, personnel who should be contacted for assistance. A brief synopsis of relevant data indicates type of information and services available to users.
Date:
December 10, 1979
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Synergistic capture mechanisms for alkali and sulfur species from combustion
An aerosol reactor system has been designed and constructed for the systematic study of the mechanisms governing the possible synergistic capture of sulfur oxide and alkalis with aluminosilicates and lime (CaO). Actual particle dynamics found in coal combustor systems can be simulated, mass balances can be closed, and the system conditions are well controlled. The collection of hot reactive aerosol flows is performed utilizing an isokinetic probe.
Date:
January 10, 1992
Creator:
Peterson, T.W.; Shadman, F.; Wendt, J.O.L. & Olsen, E.
Object Type:
Report
System:
The UNT Digital Library
Flow observation by rod lens and low-light video (videotape script: January 4, 1977)
The script of a demonstration videotape made to show the possibilities of coupling rod lenses to low-light video systems to observe internal flow conditions is presented. The illustrations accompanying the text were photographed directly from the video screen. Some up-dated comments appear as footnotes to the original script and a description of the multiscan low-light television system developed to measure velocity is included in the epilogue. The combination of rod lens and low-light video system makes it possible to observe dynamic events in hitherto inaccessible volumes. The pressure and temperature capabilities of the rod lens make it applicable to many engineering uses. This system, in conjunction with electronic image enhancement systems, provides a new dimension in engineering analysis.
Date:
August 10, 1977
Creator:
Lord, D. E.; Carter, G. W. & Petrini, R. R.
Object Type:
Report
System:
The UNT Digital Library
Characterization of cell suspensions from solid tumors
The desirable features of cells in suspension will necessarily be dependent upon the use for which the cells were prepared. Adequate cell yield or recovery is defined by the measurement to be performed. Retention of cellular morphology is important for microscopic identification of cell types in a heterogenous cell suspension, and may be used to determine whether the cells in suspension are representative of those in the tumor in situ. Different dispersal protocols may yield cells with different degrees of clonogenicity, as well as altered biochemical features, such as loss of cellular proteins, surface antigens, nucleotide pools, etc. The quality of the cell suspension can be judged by the degree of cell clumping and level of cellular debris, both of which impact on flow cytometric measurements and studies in which the number of cells be known accurately. Finally, if the data measured on the cells in suspension are to be extrapolated to phenomena occurring in the tumor in situ, it is desirable that the cells in suspension are representative of those in the solid tumor in vivo. This report compares characteristics of tumor cell suspensions obtained by different types of selected disaggregation methods. 33 refs., 2 figs., 4 tabs.
Date:
July 10, 1985
Creator:
Pallavicini, M.
Object Type:
Article
System:
The UNT Digital Library
Calorimetric measurements of laser energy and power: 1977 supplement
The use of calorimeters for measuring laser output energies and powers is reviewed, primarily for the period 1975 to 1977 since preparation of earlier reviews.
Date:
October 10, 1977
Creator:
Gunn, S.R.
Object Type:
Report
System:
The UNT Digital Library
Investigation of Sulfur-Tolerant Catalysts for Selective Synthesis of Hydrocarbon Liquids From Coal-Derived Gases. Quarterly Technical Progress Report, December 19, 1979-March 18, 1980
A 15% Fe/SiO/sub 2/ catalyst was prepared. H/sub 2/ and CO chemisorption uptakes were measured for the catalysts prepared to date. Very small uptakes were noted for the silica supported iron catalysts. Reactor activity tests in synthesis gas were conducted for 3% Fe/SiO/sub 2/, 15% Fe/SiO/sub 2/ and 10% Co-B/Al/sub 2/O/sub 3/ catalysts. These preliminary tests aided the final development of a laboratory microreactor system. Criteria for avoiding heat and mass transfer limitations on intrinsic rate measurements were examined and applied to the catalyst activity tests.
Date:
April 10, 1980
Creator:
Bartholomew, C. H.
Object Type:
Report
System:
The UNT Digital Library
Nuclear power high technology colloquium: proceedings
Reports presenting information on technology advancements in the nuclear industry and nuclear power plant functions have been abstracted and are available on the energy data base.
Date:
December 10, 1984
Creator:
unknown
Object Type:
Article
System:
The UNT Digital Library
Application of microfabrication technology to thermionic energy conversion. Progress report 2
Two diode designs are being studied that require basically different fabrication techniques. The fabrication of electrodes was begun to test the concepts and the feasibility of these designs. This work was done with polished molybdenum electrode surfaces and vapor-deposited alumina insulator structures. Initial results were obtained in the close spacing of molybdenum electrodes with alumina insulators. Spacings were demonstrated with 1/2-inch diameter discs in the range of 3 to 5 ..mu..m, using 1-..mu..m thick insulators. The deposition of thin alumina films on a molybdenum substrate was demonstrated, upon which arrays of thin film electrodes about 1/32-inch in diameter were deposited. A second approach uses a thin film as one of the electrodes. An analysis of the thermal and electrical transport properties of 1-..mu..m thick tungsten film shows that edge-connected films about 1 mm square in area could withstand the stresses generated by differential thermal expansion when the film is attached to the opposite electrode by stand-off insulators.
Date:
March 10, 1980
Creator:
Brodie, Ivor & Gates, Diane C.
Object Type:
Report
System:
The UNT Digital Library
Removal of radioisotopes from the Columbia River by natural processes
Some radioisotopes are introduced into the Columbia River by return of the water used to cool the Hanford reactors. Trace amounts of both fission product and activation product radioisotopes are present and measurable by sensitive radiochemical methods to allow determination of the self-purification processes occurring as the water moves downstream. By comparing the radioisotope input at given times with the amounts present in the river after traveling downstream, a measure of the self-purification rate was obtained. Removal in the first 40 miles downstream from the reactors was about 35% for 15 of the most prominent radioisotopes. The removal rate seemed to decrease with subsequent distance traveled downstream for three radioisotopes for which measurements were made. Radiochemical analyses of water, filterable solids, and sediment samples taken at downstream locations indicate that incorporation in sediments accounts for most of the removal. Because of the intense scouring action of the Columbia River, sediments are deposited in significant amounts only in slack water sections. The first extensive slack water section downstream from Hanford is the McNary Dam reservoir, Lake Wallula. Radiochemical analyses of some of the long-lived radioisotopes, including Mn/sup 54/, Co/sup 60/, Zn/sup 65/, and Cs/sup 147/ on sectioned sediment core samples indicate …
Date:
April 10, 1962
Creator:
Nielsen, J. M. & Perkins, R. W.
Object Type:
Report
System:
The UNT Digital Library
10-MWe pilot-plant-receiver-panel test-requirements document: Solar Thermal Test Facility
Plans are presented for insolation testing of a full-scale test receiver panel and supporting hardware which essentially duplicate both physically and functionally the design planned for the 10 MWe pilot plant. Testing includes operation during normal start and shutdown, intermittent cloud conditions, and emergencies to determine the transient and steady state operating characteristics and performance under conditions equal to or exceeding those expected in the pilot plant. The effects of variations of input and output conditions on receiver operation are also to be investigated. A brief description of the pilot plant receiver subsystem is presented, followed by a detailed description of the receiver assembly to be tested at the Solar Thermal Test Facility. Major subassemblies are described, including the receiver panel, flow control, electrical control and instrumentation, and the structural assembly. Requirements of the Solar Thermal Test Facility for the tests are given. System safety measures are described. The tests, operating conditions, and expected results are presented. Quality assurance, task responsibilities, and test documentation are also discussed. (LEW)
Date:
June 10, 1978
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Giant resonance phenomena in the electron impact ionization of heavy atoms and ions
Heavy atoms and ions offer an interesting opportunity to study atomic physics in a region where the atomic structure is dominated by the interelectronic interactions. One illustration of this is the profound term dependence of atomic orbitals for certain configurations of heavy atoms and ions. The appearance of giant scattering resonances in the cross sections for ionization of heavy atoms by electron impact is a manifestation of resonance behavior. Such resonant structures arise from the double well nature of the scattering potential and have recently been identified in the cross sections for the electron impact ionization of several xenon-like ions. The results of calculations showing effects for a variety of other ions are summarized. 7 refs., 4 figs.
Date:
June 10, 1986
Creator:
Younger, S.M.
Object Type:
Article
System:
The UNT Digital Library
Beam-beam deflections to measure size spot and offset at SLC IP
As soon as two SLC beams make it to the intersection region, both transverse offsets, spot sizes and shapes can be extracted from the pattern of angular deflections produced by the electromagnetic interaction of the two beams, as one is scanned across the other. These deflections, measured in two high resolution Beam Position Monitors (BPM) mounted symmetrically on both sides of the intersection point, will produce detectable signals allowing spot sizes to be tuned, even with the very low luminosities expected at turn on. They will also furnish a good signal to monitor beam centering and will therefore become an important part of the FFS feedback system. This note summarizes the formulae which will allow us to correlate BPM offset readings with the properties of the two beams, and describes the range and limitations of the technique in the case of SLC.
Date:
June 10, 1985
Creator:
Bambade, P.
Object Type:
Report
System:
The UNT Digital Library
Use of single-cutter data in the analysis of PDC bit designs
A method is developed for predicting cutter forces, temperatures, and wear on PDC bits as well as integrated bit performance parameters such as weight-on-bit (WOB), drilling torque, and bit imbalance. A computer code called PDCWEAR has been developed to make this method available as a tool for general bit design. The method uses single-cutter data to provide a measure of rock drillability and employs theoretical considerations to account for interaction among closely spaced cutters on the bit. Experimental data are presented to establish the effects of cutter size and wearflat area on the forces that develop during rock cutting. Waterjet assistance is shown to significantly reduce cutting forces, thereby extending bit life and reducing WOB and torque requirements in hard rock. The effects of bit profile, cutter placement density, bit rotary speed, and wear mode on bit life and drilling performance are investigated. 21 refs., 34 figs., 4 tabs.
Date:
October 10, 1986
Creator:
Glowka, D.A.
Object Type:
Article
System:
The UNT Digital Library
Doppler-shifted resonance absorption by hot electrons
When the large Doppler shifts of hot-electron-ring ECRH absorption are taken into account, the spatial location of the bulk of the energy absorption can be significantly shifted from the cold-plasma resonance region. The high parallel velocity electrons absorb most of the wave energy, thereby shielding the bulk of the electron distribution from the heating source. A simple one-dimensional model of this process has been formulated, based on a right-hand circularly polarized wave which is incident from the high-field side in the parallel direction. In this model, less than 1% of the electrons absorb more than 90% of the wave energy for the case of 30-keV maximum parallel electron energy, 28-GHz microwaves, and a 1-m magnetic field scale length. The effect should be included in power balance models and Fokker-Planck velocity distribution calculations. The Doppler shift also appears for a variety of ray-tracing code calculations in the MFTF-B thermal barrier region.
Date:
November 10, 1981
Creator:
Shearer, J.W.
Object Type:
Article
System:
The UNT Digital Library
Institute of geophysics and planetary physics
This report contains brief discussions on topics of high-pressure sciences, astrophysics, and geosciences. (LSP)
Date:
May 10, 1991
Creator:
Ryerson, F. & Budwine, C. M.
Object Type:
Report
System:
The UNT Digital Library
Chasing the x sub f dependence of J/. Psi. production
We discuss the combined effects of hard scattering processes and intrinsic heavy-quark components in the hadron wavefunction on the x{sub f} dependence of J/{psi} production. The A dependence arises from nuclear absorption, comover interactions, shadowing of parton distributions, and intrinsic heavy quarks. 9 refs., 1 fig.
Date:
June 10, 1991
Creator:
Vogt, R.
Object Type:
Article
System:
The UNT Digital Library
Future impact of the experimental results from the Argonne ZGS
Experimental programs at Argonne ZGS are reviewed with emphasis on experiments using polarized beams.
Date:
January 10, 1980
Creator:
Yokosawa, A.
Object Type:
Article
System:
The UNT Digital Library
Results of thermal performance evaluation of the Owens-Illinois Sunpak liquid solar collector at indoor conditions
This report provides test results on the thermal performance of an Owens-Illinois Sunpak liquid, evacuated tube, solar collector under simulated conditions. The test was conducted using the Marshall Space Flight Center Solar Simulator in accordance with the test requirements specified in ASHRAE 93-77 (Method of Testing to Determine the Thermal Performance of Solar Collectors) and the procedures contained in MTCP-FA-SHAC-400 (Procedure for Operation of the MSFC Solar Simulator Facility). The tests were performed on a module used on the early demonstration projects. A current production module is undergoing tests with results to be in a subsequent report.
Date:
October 10, 1979
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Numerical studies of high current beam compression in heavy ion fusion
The process of longitudinal compression of a drifting heavy ion pulse to be used as an ICF driver is examined with the aid of particle simulation. Space charge forces play a vital role in halting compression before the final focus lens system is reached. This must take place with minimal growth of transverse emittance and momentum spread. Of particular concern is the distortion of longitudinal phase space by the rounded transverse profile of the longitudinal self-electric field.
Date:
May 10, 1985
Creator:
Bisognano, J.; Lee, E. P. & Mark, J. W. K.
Object Type:
Article
System:
The UNT Digital Library
Stochastic basis for curve shape, RBE and temporal dependence
This paper uses biophysical-microdosimetric quantities, measured in a physical surrogate or phantom cell, to explain the shape of absorbed dose-quantal cell response curves, the role of radiation quality and the influence of dose rate. Responses expected are explored first in simple autonomous cell systems, followed by increasingly-complex systems. Complications seen with increasingly-complex systems appear to be confined largely to the higher dose and dose rate ranges.
Date:
August 10, 1982
Creator:
Bond, V.P.
Object Type:
Article
System:
The UNT Digital Library