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NACA Research Memorandums
422
NACA Technical Notes
401
Atomic Energy Commission Reports
369
United States Department of Energy Grand Junction Office Reports
174
United States Geological Survey Reports
139
NACA Technical Memorandums
136
GJBX
133
NACA Wartime Reports
107
Argonne National Laboratory Reports
102
Trace elements investigations report
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2,355 Matching Results
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Advanced Fuel Cell Development Progress Report: January-March 1979
Quarterly report discussing fuel cell research and development work at Argonne National Laboratory (ANL). This report describes efforts directed toward understanding and improving the components of molten-carbonate-electrolyte fuel cells operated at temperatures near 925 K. The primary focus of this work has been the development of electrolyte structures that have good electrolyte retention and mechanical properties as well as long-term stability, and on developing methods of synthesis amendable to mass production.
Date:
September 1979
Creator:
Pierce, R. D.; Nelson, P. A. & Arons, R. M.
Object Type:
Report
System:
The UNT Digital Library
Advanced Fuel Cell Development Progress Report: January-March 1980
Quarterly report discussing fuel cell research and development work at Argonne National Laboratory (ANL). This report describes efforts directed toward understanding and improving components of molten carbonate fuel cells and have included operation of 10-cm square cells.
Date:
September 1980
Creator:
Pierce, R. D.; Arons, R. M.; Fraioli, A. V.; Kucera, G. H.; Poeppel, R. B.; Sim, J. W. et al.
Object Type:
Report
System:
The UNT Digital Library
PTAC: a Computer Program for Pressure-Transient Analysis, Including the Effects of Cavitation
PTAC was developed to predict pressure transients in nuclear-power-plant piping systems in which the possibility of cavitation must be considered. The program performs linear or nonlinear fluid-hammer calculations, using a fixed-grid method-of-characteristics solution procedure. In addition to pipe friction and elasticity, the program can treat a variety of flow components, pipe junctions, and boundary conditions, including arbitrary pressure sources and a sodium/water reaction. Essential features of transient cavitation are modeled by a modified column-separation technique. Comparisons of calculated results with available experimental data, for a simple piping arrangement, show good agreement and provide validation of the computational cavitation model. Calculations for a variety of piping networks, containing either liquid sodium or water, demonstrate the versatility of PTAC and clearly show that neglecting cavitation leads to erroneous predictions of pressure-time histories.
Date:
September 1978
Creator:
Kot, C. A. & Youngdahl, C. K.
Object Type:
Report
System:
The UNT Digital Library
Studies of Nuclear Waste Migration in Geologic Media, Annual Report: October 1978-September 1979
Annual report of the Argonne National Laboratory Chemical Engineering Division regarding studies of nuclear waste migration in geologic media. This report discusses research regarding nuclide migration by fluid flow in rock.
Date:
September 1979
Creator:
Seitz, M. G.; Rickert, P. G.; Couture, R. A.; Williams, J.; Meldgin, N.; Fried, Sherman M. et al.
Object Type:
Report
System:
The UNT Digital Library
Lithium/Iron Sulfide Batteries for Electric-Vehicle Propulsion and Other Applications Progress Report for October 1981-September 1982
This report describes the work done on development of lithium/iron sulfide batteries at Argonne National Laboratory during FY 1982. The work at ANL has been concerned principally with the electrochemical and materials aspects of lithium-alloy negative electrodes and iron sulfide positive electrodes, materials research, cell design studies, and the testing and post-test examinations of cells fabricated by two industrial contractors--Eagle-Picher Industries, Inc. and Gould Inc.
Date:
September 1983
Creator:
Barney, Duane L.
Object Type:
Report
System:
The UNT Digital Library
Review and Analysis of Spray Combustion as Related to Alternative Fuels
A review was conducted during the period of mid-June to mid-August 1979, of the literature on spray combustion. Particular attention has been paid to theoretical and experimental work on droplet and spray combustion applicable to the use of alternate fuels, mainly liquid fuels derived from coal and shale.
Date:
September 1979
Creator:
Black, C. H.; Chiu, H. H.; Fischer, J. & Clinch, J. M.
Object Type:
Report
System:
The UNT Digital Library
Di-n-Amyl-n-Amylphosphonate and Tricaprylmethylammonium Nitrate as Potential Extractants for Reprocessing Th-U Fuels
Both 2F di-n-amyl-n-amylphosphonate in n-dodecane (DA(AP)-DD) and 0.77F tricaprylmethylammonium nitrate in Aromatic 100 (TCMA.NO/sub 3/-AR100) extract uranium and thorium into relatively concentrated organic solutions. Countercurrent-flow tests with each extractant have demonstrated effective uranium-thorium separations by selective stripping from the organic phase. Both extractants offer advantageous alternatives to tributylphosphate (Thorex) in reprocessing irradiated mixed ThO2-UO2 fuels. Formic acid is used for removing thorium from DA(AP)-DD; dilute HNO3 removes uranium from TCMA.NO3-AR100. Spectra of plutonium in formic acid are shown. The use of concentrated TCMA.NO3-AR100 at 50 to 65/sup 0/C avoids viscosity problems and suppresses third-phase formation. Thorium extracts into concentrated TCMA.NO/sub 3/-AR100 in greater amounts than would be predicted from stoichiometric assumptions.
Date:
September 1979
Creator:
Diamond, H.
Object Type:
Report
System:
The UNT Digital Library
Dynamic Behavior of Reacting Gas Jets Submerged in Liquids: a Photographic Study : Annual Report for the Period May 1, 1985 - May 1, 1986
A photographic study of a hydrogen chloride gas jet reacting in an aqueous solution of ammonia was conducted. The high-speed motion pictures taken revealed that the behavior of the reacting gas jet was highly dynamic and complex. The gaseous jet penetration (''plume'') was not stationary, but underwent a change in shape and size with time, which appeared to be periodic or cyclic. Certain observations made, including a high-pitched sound, exhibited a striking similarity to the so-called ''singing flame'' phenomenon. Such dynamic plume behavior is attributed to the vaporization of the bath liquid due to reaction heat release. The plume length measurements for large concentrations of ammonia seem to confirm the prediction that when the extent of vaporization is large, the plume length is mainly determined by the distance required for condensation of the vapor.
Date:
September 1986
Creator:
Cho, D. H.; Armstrong, D. R. & Bova, L.
Object Type:
Report
System:
The UNT Digital Library
An Assessment and Comparison of Fuel Cells for Transportation Applications
Fuel cells offer the potential of a clean, efficient power source for buses, cars, and other transportation applications. When the fuel cell is run on methanol, refueling would be as rapid as with gasoline-powered internal combustion engines, providing a virtually unlimited range while still maintaining the smooth and quiet acceleration that is typical for electric vehicles.
Date:
September 1989
Creator:
Krumpelt, Mike & Christianson, C. C.
Object Type:
Report
System:
The UNT Digital Library
Practical Superconductor Development for Electrical Power Applications, Annual Report: 1989
Annual report for the superconductor program at Argonne National Laboratory discussing the group's activities and research.
Date:
September 1989
Creator:
Argonne National Laboratory. Materials and Components Technology Division.
Object Type:
Report
System:
The UNT Digital Library
Assessment of Impact of Advanced Energy Transmission Fluids on District Heating and Cooling Systems : (Phase 1)
Argonne National Laboratory (ANL), under sponsorship of the US Department of Energy (DOE) Office of Buildings and Community Systems, has embarked upon a comprehensive, long-range program to develop high-performance advanced energy transmission fluids for use in district heating and cooling (DHC) systems. ANL has the lead technical role in this DOE program. These advanced fluids will substantially reduce flow frictional losses and enhance energy transfer. In system enhancement scoping studies conducted by ANL, the fluids yielded potentially significant upfront capital equipment cost reductions by allowing the use of smaller pipes, pumps, heat exchangers, and storage tanks as well as reductions in operational costs. This report presents the first-phase results of assessment of impact of the advanced fluids on DHC systems. Future reports will focus on assessment of impact on hardware performance, capital equipment, and operation costs.
Date:
September 1987
Creator:
Kasza, Kenneth Edmund & Chen, M. M.
Object Type:
Report
System:
The UNT Digital Library
Microstructural Effects and Signal-Enhancement Techniques in Ultrasonic Examination of Stainless Steel
Ultrasonic inspection of large-grain stainless steel and stainless steel welds is difficult, and the results obtained are not easily interpreted. In the present study, the effects of stainless steel microstructure on ultrasonic test results are described, and several signal-processing techniques for enhancing ultrasonic flaw signals are discussed.
Date:
September 1976
Creator:
Kupperman, D. S. & Reimann, K. J.
Object Type:
Report
System:
The UNT Digital Library
Technology Utilization/Commercialization Activities at Argonne National Laboratory
Technology utilization/commercialization is the process of applying technology to satisfy a preexisting need. The present report examines the organizational relationships involved, the controlling factors, and the role of the technology agent. Included is a brief assessment of the technology commercialization activities currently under way as part of specific research and development projects at Argonne National Laboratory. In addition to the usual supporting references, an appendix is devoted to a sampling of the relevant literature.
Date:
September 1976
Creator:
Venard, J. T.
Object Type:
Report
System:
The UNT Digital Library
Weight Losses of Marble and Limestone Briquettes Exposed to Outdoor Environments in the Eastern United States : Results of Exposures, 1984-1988
Gravimetric changes in marble and limestone briquettes exposed to outdoor environment at five sites in the eastern United States have been monitored since 1984. An earlier report describes procedures and results obtained in 1984--1988. This report presents the results of the exposure period 1984--1988 and reviews and summarizes those of prior years. A linear relationship was found between cumulative gravimetric losses and exposure period or rain depth. These losses resulted in an average recession rate of 14 to 24 {mu}m/yr for marble and twice that for limestone. Variations in recession among the various exposure sites can be ascribed to differences in rain depth and hydrogen ion concentration. The annual recession rates obtained from gravimetry yielded rates that were for marble twice those obtained from runoff experiments, and more than three times those for limestone; this indicates that physical erosion plays an important role. Gravimetric monitoring of exposed briquettes is continuing in a planned 10-yr program.
Date:
September 1991
Creator:
Reimann, K. J.
Object Type:
Report
System:
The UNT Digital Library
A Tutorial on the Construction of High-Performance Resolution/Paramodulation Systems
Over the past 25 years, researchers have written numerous deduction systems based on resolution and paramodulation. Of these systems, a very few have been capable of generating and maintaining a formula database "containing more than just a few thousand clauses. These few systems were used to explore mechanisms for rapidly extracting limited subsets of relevant" clauses. We have written this tutorial to reflect some of the best ideas that have emerged and to cast them in a form that makes them easily accessible to students wishing to write their own high-performance systems.
Date:
September 1990
Creator:
Butler, R. & Overbeek, R.
Object Type:
Report
System:
The UNT Digital Library
A Theory for Fluidelastic Instability of Tube-Support-Plate Inactive Modes
Fluid-elastic instability of loosely supported tubes, vibrating in a tube-support-plate (TSP) inactive mode, is suspected to be one of the main causes of tube failure in some operating steam generators and heat exchangers. This report presents a mathematical model for fluid-elastic instability of loosely supported tubes exposed to non-uniform cross-flow. The model incorporates all motion-dependent fluid forces based on the unsteady flow theory. In the unstable region associated with a TSP-inactive mode, tube motion can be described by two linear models: TSP-inactive mode when tubes do not strike the TSP, and TSP-active mode when tubes do strike the TSP. A bilinear model (consisting of these linear models) presented in this report simulates the characteristics of fluid-elastic instability of loosely supported tubes in stable and unstable regions associated with TSP-inactive modes. Analytical results obtained with the model are compared with published experimental data; they agree reasonably well. The prediction procedure presented for fluid-elastic instability response of loosely supported tubes is applicable to the stable and unstable regions of the TSP-inactive mode.
Date:
September 1990
Creator:
Cai, Y.; Chen, Shoei-Sheng & Chandra, S.
Object Type:
Report
System:
The UNT Digital Library
Searching for Fixed Point Combinators by Using Automated Theorem Proving : a Preliminary Report
In this report, we establish that the use of an automated theorem- proving program to study deep questions from mathematics and logic is indeed an excellent move. Among such problems, we focus mainly on that concerning the construction of fixed point combinators--a problem considered by logicians to be significant and difficult to solve, and often computationally intensive and arduous. To be a fixed point combinator, THETA must satisfy the equation THETAx = x(THETAx) for all combinators x. The specific questions on which we focus most heavily ask, for each chosen set of combinators, whether a fixed point combinator can be constructed from the members of that set. For answering questions of this type, we present a new, sound, and efficient method, called the kernel method, which can be applied quite easily by hand and very easily by an automated theorem-proving program. For the application of the kernel method by a theorem-proving program, we illustrate the vital role that is played by both paramodulation and demodulation--two of the powerful features frequently offered by an automated theorem-proving program for treating equality as if it is ''understood.'' We also state a conjecture that, if proved, establishes the completeness of the kernel method. From …
Date:
September 1988
Creator:
Wos, Larry
Object Type:
Report
System:
The UNT Digital Library
Users' Guide to Toolpack/1 Tools for Data Dependency Analysis and Program Transformation
A guide to the use of a collection of software tools for data dependency analysis and program transformation, written in Fortran and for a Unix environment.
Date:
September 1988
Creator:
Cowell, Wayne R.
Object Type:
Report
System:
The UNT Digital Library
Air-consumption parameters for automatic mixture control of aircraft engines
From Introduction: "The purpose of this analysis was to investigate the use of function of intake-manifold temperature and pressure, exhaust back pressure, and engine speed in place of a ventri as a means of measuring engine air consumption and to determine if this function is suitable for automatic mixture control."
Date:
September 1944
Creator:
Shames, Sidney J.
Object Type:
Report
System:
The UNT Digital Library
An Ultrasonic Scanner for Stainless Steel Weld Inspections
The large grain size and anisotropic nature of stainless steel weld metal make conventional ultrasonic testing very difficult. This paper evaluates a technique for minimizing the coherent noise in stainless steel weld metal. The method involves digitizing conventional A-scan traces and averaging them with a minicomputer. Results are presented for an ultrasonic scanner which interrogates a small volume of the weld metal while averaging the coherent ultrasonic noise.
Date:
September 1978
Creator:
Kupperman, D. S. & Reimann, K. J.
Object Type:
Report
System:
The UNT Digital Library
Disposal of Radioactive Sodium Waste
Operation of liquid-metal-cooled fast breeder reactors (LMFBRs) will result in production of various quantities of radioactive sodium waste. Two methods have been developed and tested on a small scale for converting this sodium waste to inert compounds suitable for disposal. The first method is direct oxidation of the sodium after dispersal in a silica matrix. The sodium is mixed with silica and oxidized in a rotary drum reactor. The product is suitable for making glass when other stabilizing compounds are added. The second method is reaction of elemental sodium with molten sodium hydroxide at 450 degrees C and subsequent injection of steam into the melt to convert the reaction products (Na2O and NaH) to additional sodium hydroxide. The reactions are smooth and easily controlled with little danger of run-away reactions. The end product is molten sodium hydroxide which can be cast into drums for further treatment or disposal. The advantages of these two methods over more conventional aqueous processes are the elimination of aqueous wastes and the elimination of minimization of gaseous effluents.
Date:
September 1978
Creator:
McPheeters, C. C. & Wolson, R. D.
Object Type:
Report
System:
The UNT Digital Library
The Environmental Working Level Monitor
Abstract: "The Environmental Working Level Monitor (EWLM) is an instrument used to automatically monitor airborne Rn-daughter concentrations and the Working Level (WL). It is an ac powered, microprocessor-based instrument with an external inverter provided for dc operation if desired. The microprocessor's control processor unit (CPU) controls the actuation of the detector assembly and processes its output signals to yield the measurements in the proper units. The detectors are fully automated and require no manual operations once the instrument is programmed. They detect and separate the alpha emitters of RaA and RaC' as well as detecting the beta emitters of RaB and RaC. The resultant pulses from these detected radioisotopes are transmitted to the CPU. The programmed microprocessor performs the mathematical manipulations necessary to output accurate Rn-daughter concentrations and the WL. A special subroutine within the system program enables the EWLM to run a calibration procedure on command which yields calibration data. This data can then be processed in a separate program on most computers capable of BASIC programming. This calibration program results in the derivation of coefficients and beta efficiencies which provides the calibrated coefficients and beta efficiencies required by the main system program to assure proper calibration of the …
Date:
September 29, 1978
Creator:
Keefe, Donald J.; McDowell, William P. & Groer, Peter G.
Object Type:
Report
System:
The UNT Digital Library
Organization of Building Standards Systematic Techniques for Scope and Arrangement
Report issued by the National Bureau of Standards over the organization of standards for quick and reliable access. Organizational developments are discussed. This report includes illustrations, and photographs.
Date:
September 1981
Creator:
Harris, James Robert & Wright, Richard Newport
Object Type:
Report
System:
The UNT Digital Library
Magnolia Oil Field, Columbia County, Arkansas: Part 1. Petroleum-Engineering Study; Part 2. Derivation and Application of Material-Balance Equations
Report issued by the U.S. Bureau of Mines on studies conducted at the Magnolia oil fields in Columbia County, Arkansas. History, geology, and methods are presented. This report includes tables, graphs, maps, and illustrations.
Date:
September 1943
Creator:
Carpenter, Charles B.; Schroeder, H. J. & Cook, Alton B.
Object Type:
Report
System:
The UNT Digital Library