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Oklahoma Historical Society
692
UNT Libraries Government Documents Department
268
Texas Historical Commission
57
UNT Libraries Special Collections
57
The Grace Museum
50
Dublin Public Library
29
Sterling Municipal Library
26
Brownwood Public Library
25
UNT Libraries
23
Carl Albert Congressional Research and Studies Center
21
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Oklahoma Publishing Company Photography Collection
475
Texas Digital Newspaper Program
472
Oklahoma Digital Newspaper Program
242
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239
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197
Abilene Library Consortium
79
Texas & Pacific Railway Collection
50
The Oklahoma City Times
40
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34
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29
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Year
Month
Coal Technology Program. Progress report for December 1975
This report, the seventeenth of a series, is a compendium of monthly progress reports in support of the increased utilization of coal as a source of clean energy. The projects reported include those for hydrocarbonization, solid-liquid separations, chemical research and development, engineering evaluations of nuclear process heat for coal conversion, engineering evaluations of the hydrocarbonization and synthoil processes, and coal-fueled MIUS. Two more runs were completed with the bench-scale hydrocarbonization research system using nitrogen at 20 atm with the preheater at 1400/sup 0/F and the reactor at 1250/sup 0/F. Some difficulty was encountered with the coal feeder and corrective modifications are underway. Revisions and additions were made to the flowsheet for a plant using direct steam gasification of coal, which is thermally driven by a 3000-MW(t) VHTR. In the engineering evaluations work for the synthoil process, flow diagrams for four units were finalized. A preliminary facility site plan was developed. Conceptual design of the solids-liquid separation plant specifying centrifugation followed by filtration of the thickened underflow was completed. In the MIUS program, a /sup 1///sub 12/ scale model of the latest layout is being constructed. (auth)
Date:
February 1, 1976
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Comparison between dispersed nuclear power plants and a nuclear energy center at a hypothetical site on Kentucky Lake, Tennessee
The thermal, ecological, and social impacts of a 40-reactor NEC are compared to impacts from four 10-reactor NECs and ten 4-reactor power plants. The comparison was made for surrogate sites in western Tennessee. The surrogate site for the 40-reactor NEC is located on Kentucky Lake. A layout is postulated for ten clusters of four reactors each with 2.5-mile spacing between clusters. The plants use natural-draft cooling towers. A transmission system is proposed for delivering the power (48,000 MW) to five load centers. Comparable transmission systems are proposed for the 10-reactor NECs and the 4-reactor dispersed sites delivering power to the same load centers. (auth)
Date:
February 1, 1976
Creator:
Fitzpatrick, F. C.; Gray, D. D.; Hyndman, J. R.; Sisman, O.; Suffern, J. S.; Tyrrell, P. A. et al.
Object Type:
Report
System:
The UNT Digital Library
Compression wave studies in Blair dolomite
Dynamic compression wave studies have been conducted on Blair dolomite in the stress range of 0-7.0 GPa. Impact techniques were used to generate stress impulse input functions, and diffuse surface laser interferometry provided the dynamic instrumentation. Experimental particle velocity profiles obtained by this method were coupled with the conservation laws of mass and momentum to determine the stress-strain and stress-modulus constitutive properties of the material. Comparison between dynamic and quasistatic uniaxial stress-strain curves uncovered significant differences. Energy dissipated in a complete load and unload cycle differed by almost an order of magnitude and the longitudinal moduli differed by as much as a factor of two. Blair dolomite was observed to yield under dynamic loading at 2.5 GPa. Below 2.5 GPa the loading waves had a finite risetime and exhibited steady propagation. A finite linear viscoelastic constitutive model satisfactorily predicted the observed wave propagation. We speculate that dynamic properties of preexisting cracks provides a physical mechanism for both the rate dependent steady wave behavior and the difference between dynamic and quasistatic response.
Date:
February 1, 1976
Creator:
Grady, D. E.; Hollenbach, R. E.; Schuler, K. W. & Callender, J. F.
Object Type:
Report
System:
The UNT Digital Library
Computer-assisted estimating for the Los Alamos Scientific Laboratory
An analysis is made of the cost estimating system currently in use at the Los Alamos Scientific Laboratory (LASL) and the benefits of computer assistance are evaluated. A computer-assisted estimating system (CAE) is proposed for LASL. CAE can decrease turnaround and provide more flexible response to management requests for cost information and analyses. It can enhance value optimization at the design stage, improve cost control and change-order justification, and widen the use of cost information in the design process. CAE costs are not well defined at this time although they appear to break even with present operations. It is recommended that a CAE system description be submitted for contractor consideration and bid while LASL system development continues concurrently.
Date:
February 1, 1976
Creator:
Spooner, J. E.
Object Type:
Report
System:
The UNT Digital Library
Computer simulation of a staging system for a theta-pinch reactor (RTPR)
To reduce excessive energy requirements for the implosion heating system of a theta-pinch reactor, two staging methods, the brute force and bucking field options, were proposed. A Marshall coil and a segmented coil were also considered. Calculations involved in coding these coil designs and staging options into a PL/I subprogram are described. A marked savings in the energy required for the IH system is realized with the bucking option and others.
Date:
February 1, 1976
Creator:
Crnkovich, P. G.
Object Type:
Report
System:
The UNT Digital Library
Computer studies of the scattering of low energy hydrogen ions from polycrystalline solids
Reflection of 50 eV to 10 keV H atoms from polycrystalline Cu, Nb and Au targets has been calculated using the binary collision cascade program MARLOWE. The fractions of particles and energy reflected (backscattered) increase with increasing atomic number of the target and decrease with increasing incident energy. The results indicate that the effects of polycrystallinity are modest, reducing the amorphous reflection coefficients by about 25 percent. The calculations agree quite well with the experimental data for Cu and Au, but are about a factor of two larger than is observed for Nb.
Date:
February 1, 1976
Creator:
Oen, O.S. & Robinson, M.T.
Object Type:
Article
System:
The UNT Digital Library
CONRAD: heat conduction-radiation code. Part I
A computer code is developed for two-dimensional, non-steady heat conduction in heterogeneous, anisotropic solids with nonuniform volumetric internal heating. Thermal radiation and arbitrary heat flux boundary conditions are accommodated. Coolant tubes are taken into account by prescribing fluid temperatures and heat transfer coefficients. With regard to coolant tubes, allowance is made for: (a) heat capacitance in the tube wall, coolant tube in contact with the structural material; (b) zero heat capacitance in the tube wall, coolant tube in contact with the structural material; and (c) zero heat capacitance in the tube wall, radiation gap between the wall and structure. The finite difference equations are solved by the standard explicit method. Stability as well as convergence of the iterative process are considered.
Date:
February 1, 1976
Creator:
Fillo, J. A.; Benenati, R. & Powell, J. R.
Object Type:
Report
System:
The UNT Digital Library
Consensus forecast of U. S. electricity supply and demand to the year 2000
Recent forecasts of total electricity generating capacity and energy demand as well as for electricity produced from nuclear energy and hydroelectric power are presented in tables and graphs to the year 2000. A forecast of the distribution of type of fuel and energy source that will supply the future electricity demand is presented. Use of electricity by each major consuming sector is presented for 1975. Projected demands for electricity in the years 1985 and 2000, as allocated to consuming sectors, are derived and presented.
Date:
February 1, 1976
Creator:
Lane, J. A.
Object Type:
Report
System:
The UNT Digital Library
Consensus forecast of U. S. energy supply and demand to the year 2000
Methods used in forecasting energy supply and demand are described, and recent forecasts are reviewed briefly. Forecasts to the year 2000 are displayed in tables and graphs and are used to prepare consensus forecasts for each form of fuel and energy supply. Fuel demand and energy use by consuming sector are tabulated for 1972 and 1975 for the various fuel forms. The distribution of energy consumption by use sector, as projected for the years 1985 and 2000 in the ERDA-48 planning report (Scenario V), is normalized to match the consensus energy supply forecasts. The results are tabulated listing future demand for each fuel and energy form by each major energy-use category. Recent estimates of U.S. energy resources are also reviewed briefly and are presented in tables for each fuel and energy form. The outlook for fossil fuel resources to the year 2040, as developed by the Institute for Energy Analysis at the Oak Ridge Associated Universities, is also presented.
Date:
February 1, 1976
Creator:
Lane, J. A.
Object Type:
Report
System:
The UNT Digital Library
Contamination of groundwater by heavy metals from the land disposal of fly ash. Technical progress report, June 1, 1975--February 29, 1976. [As, Ca, Cd, Cr, Cu, Fe, Hg, Pb, Zn]
Major emphasis was placed on laboratory evaluations of heavy metal associations with fly ash. Data are presented showing that most fly ashes contain considerable amounts of As, Ca, Cd, Cr, Cu, Fe, Hg, Pb, and Zn. Desorption studies suggest that pH and the presence of various heavy metal sinks on the ash particle surface (notably hydrous iron oxides) play significant roles in the release of these metals into solution. Adsorption studies using natural ash leachate/soil systems and vertical soil columns give quantitative estimates (through the use of adsorption isotherms) of the degree of attenuation of the heavy metals. Results verify the importance of solution pH and iron oxide concentration. In general the element cadmium shows the least tendency toward sorbing onto local solid phases while lead is sorbed to the greatest extent. Among soil types, organic peat was the most effective in removing metals while silica was least effective.
Date:
February 1, 1976
Creator:
Theis, T. L. & Marley, J. J.
Object Type:
Report
System:
The UNT Digital Library
Cost estimation for a theta-pinch reactor
A simulation of a theta-pinch fusion power plant has been completed to the point where economic feasibility can be examined. A PL/I cost subprogram is presented for interfacing with the computer code TPFPP. This code is then used to obtain a first approximation of the costs for the reactor. Independent geometrical and plant design parameters are varied over a wide range, with simultaneous variation of magnetic field, minor first wall radius, and plasma maximum compression. The study indicates that the plant energy balance must be favorable, availability must be high, and major component costs must be low to achieve economical results. Although costing uncertainties remain, it is clear that development of easy and rapid replacement methods for reactor components is essential and that new staging concepts to reduce the implosion energy requirement must be pursued.
Date:
February 1, 1976
Creator:
Coultas, T. A.; Cook, J. M.; Crnkovich, P. & Dauzvardis, P.
Object Type:
Article
System:
The UNT Digital Library
Cross-flow filtration in physical-chemical treatment of municipal sewage effluents
In separations of solids from liquids by filtration, the motion of liquid is customarily normal to the filtering surface, and solids are left on the filter. In a variation called cross-flow filtration, liquid is pumped parallel to the filtering surface. By this device, thickening of flux-limiting filtercake is slowed, and the original stream is separated into a large volume of filtrate and a concentrated slurry of solids. Results reported here were obtained in cross-flow filtration used as an element in physical-chemical treatment of municipal sewage, mostly with the effluent from primary settling, but in some cases, with clarified activated sludge effluent as feed. Filtrate from passage through fabric tubes (1-inch fire-hose jackets) of primary effluent, treated with iron or aluminum salts, with powdered activated carbon (PAC), or with both hydrolyzable ions and PAC, was generally of quality superior in turbidity, organic carbon and other respects to the effluent from biological secondary treatment. Effects on product quality and flux of pressure, circulation velocity, additive concentration, water recovery, pH and other variables were investigated. Based on production rates obtained, estimates of treatment costs were made.
Date:
February 1, 1976
Creator:
Mahlman, H. A.; Sisson, W. G.; Kraus, K. A. & Johnson, J. S. Jr.
Object Type:
Report
System:
The UNT Digital Library
The Cross Section, Volume 22, Number 2, February 1976
Monthly newsletter of the High Plains Underground Water Conservation District No. 1, discussing the field of underground water. Topics include profiles of water conservation research, annual pre-plant soil moisture survey data, annual Winter Water Level measurement data, and information about the latest water conservation tips.
Date:
February 1976
Creator:
High Plains Underground Water Conservation District No. 1 (Tex.)
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Cryogenic power transmission technology: cryogenic dielectrics. Quarterly report, April 1--June 30, 1975
During this reporting period, April 1 to June 30, 1975, ac dielectric breakdown and partial discharge measurements were carried out on several new polyolefin films immersed in liquid helium at atmospheric pressure. The average breakdown strengths ranged from 135 to 220 MV/m, and were close to the breakdown strengths for the other materials already tested. Analysis of the partial discharge inception voltages for all of the materials tested so far shows that the major determinant of partial discharge inception is the breakdown voltage of the helium layer in series with the film. In other experiments on Valeron polyethylene with both film and electrodes completely encapsulated by epoxy, breakdown occurred with no observable partial discharge. The partial discharge sensitivity was the same as used for the unencapsulated film experiments. The breakdown strength with encapsulation was slightly higher than without. The temperature was varied from 4.2 to 300$sup 0$K, but no influence on the breakdown strength was observed. Breakdown tests with ac voltage were carried out on liquid helium between ASTM electrodes. The peak breakdown voltages measured on the first run were somewhat lower than the previously measured dc voltages. After repolishing the electrodes, another run in which both dc and ac …
Date:
February 1, 1976
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Crystal structures of cerium metal at high pressure
The high pressure form of cerium metal stable above 51 kbar, ..cap alpha..'-Ce, is found to be orthorhombic with the ..cap alpha..-U type of structure. At 58 kbar the cell dimensions of ..cap alpha..'-Ce are: a = 3.049 A, b = 5.998 A, c = 5.215 A. A second, metastable phase of cerium metal, ..cap alpha..''-Ce, has also been observed. It is monoclinic body-centered with a deformed, face-centered cubic (fcc) structure. The cell dimensions of ..cap alpha..''-Ce at 56 kbar are: a = 4.762 A, b = 3.170 A, c = 3.169 A, ..beta.. = 91.73/sup 0/. The volume change at the ..cap alpha..-..cap alpha..' transition point is ..delta..V/V = 0.011. Cerium metal is fully tetravalent in both ..cap alpha..'-Ce and ..cap alpha..''-Ce. 9 tables.
Date:
February 1, 1976
Creator:
Zachariasen, W. H. & Ellinger, F. H.
Object Type:
Report
System:
The UNT Digital Library
Cu(n,x$gamma$) reaction cross section for incident neutron energies between 0.2 and 20.0 MeV
Differential cross sections for the neutron-induced gamma-ray production from copper have been measured for incident neutron energies between 0.2 and 20.0 MeV. The Oak Ridge Linear Accelerator (ORELA) was used to provide the neutrons and a NaI spectrometer to detect the gamma rays at 125$sup 0$. The data presented are the doubly differential cross section, d$sup 2$sigma/d$Omega$dE, for gamma-ray energies between 0.3 and 10.6 MeV for coarse intervals in incident neutron energy. The integrated yield of gamma rays of energies greater than 300 keV with higher resolution in the neutron energy is also presented. The experimental results are compared with previous measurements made at ORELA and with the Evaluated Neutron Data File (ENDF/B-IV, MAT 1295). 41 figures, cross section tables. (auth)
Date:
February 1, 1976
Creator:
Chapman, G.T.
Object Type:
Report
System:
The UNT Digital Library
Defects in metal crystals. Progress report, May 1, 1975--April 30, 1976. [W--Re; Pt--Au; Mo--Ti]
Emphasis was on use of different irradiating species (300-700 eV Xe/sup +/ ions, 20-30 keV W/sup +/ ions, 20-30 keV Mo/sup +/ ions, and fast neutrons) to introduce both vacancies and interstitials in Mo, W, Au, Pt--(Au), W--(Re), Mo(Ti), Ni/sub 4/Mo, and low-swelling and commercial 316 stainless steels. The following are reported: (A) an in-situ field-ion microscope study of ion-irradiated tungsten and tungsten alloys (W-Re) (recovery in Stages I and II); (B) a review of Stages I to IV of irradiated or quenched tungsten and tungsten alloys by field-ion microscopy; (C) a review of field-ion microscope studies of the defect structure of the primary state of damage of irradiated metals; (D) an in-situ field-ion microscope study of the recovery behavior of ion-irradiated molybdenum in Stages I and II; (E) a field-ion microscope study of the recovery behavior of Stage II in ion-irradiated platinum-0.10, 0.62 and 4.0 at. percent gold alloys; (F) a new technique for focused-collision sequence range measurements; (G) atom-probe field-ion microscopy (improvements, results on W alloys, Mo alloys (Mo, TZM, Mo--Ti), low-swelling stainless steel alloy); (H) range of a focused collision replacement sequence in ordered alloys; and (I) interaction of self-interstitial atoms with impurity gas solute atoms in …
Date:
February 1, 1976
Creator:
Seidman, D. N.
Object Type:
Report
System:
The UNT Digital Library
Determination of biological transport of oxygen-15 and carbon-11 generated in rats. [32 MeV proton beams]
The distribution of induced /sup 15/O and /sup 11/C activity in live and dead rats was determined following local irradiation with a 32 MeV proton beam. Results indicate that rapid biological redistribution of some of the induced activity occurs within a minute following irradiation. Sufficient activity remains, bound in the intracellular water, to define the proton beam in tissue. Thus, mapping of the induced /sup 15/O activity proves to be a valid means of beam localization.
Date:
February 1, 1976
Creator:
Archambeau, B.; Bennett, G. W. & Archambeau, J. O.
Object Type:
Report
System:
The UNT Digital Library
Development of an assessment methodology for geopressured zones of the upper Gulf Coast based on a study of abnormally pressured gas fields in South Texas. Progress report, 1 December 1975--29 February 1976. [300/sup 0/F isothermal surface at 10,500 to 14,000 ft]
Twenty-four separate gas fields producing from geopressured sands have been identified in the South Texas area that includes Hidalgo, Cameron, Willacy and the lower half of Kenedy Counties. Of these, twenty are in Hidalgo County. Geological study and detailed investigation of reservoir parameters in each of the fields have been accomplished. Two areas in particular are discussed in some detail in this paper: the Vicksburg Trend on the west, represented by McAllen Ranch Field, and the south central Frio-Vicksburg delta, including the McAllen-Pharr-Edinburg area. The depth of the geopressured zone in the study area ranges from 7,000 feet in western Hidalgo County to 12,000 feet in the central Cameron County. Temperature data within the fields, corrected to equilibrium values, yields a 300/sup 0/F isogeothermal surface at depths of 10,500 feet to 14,000 feet over the study area. The most critical reservoir parameter was found to be the effective permeability in all the fields in the region. Permeability values ranged from 0.03 md to 8.0 md, with average values over all the fields near 1.0 md. A permeability profile of McAllen-Pharr shows permeability there to be an inverse function of depth, with effective permeability values from 16 md above the geopressured …
Date:
February 1, 1976
Creator:
Swanson, R. K.; Oetking, O.; Osoba, J. S. & Hagens, R. C.
Object Type:
Report
System:
The UNT Digital Library
Development of coring, consolidating, subterrene penetrators
Coring penetrators offer two advantages over full face-melting penetrators, i.e., formation of larger boreholes with no increase in power and the production of glass-lined, structurally undisturbed cores which can be recovered with conventional core-retrieval systems. These cores are of significant value in geological exploratory drilling programs. The initial design details and fabrication features of a 114-mm-diam coring penetrator are discussed; significant factors for design optimization are also presented. Results of laboratory testing are reported and compared with performance predictions, and an initial field trial is described.
Date:
February 1, 1976
Creator:
Murphy, H. D.; Neudecker, J. W.; Cort, G. E.; Turner, W. C.; McFarland, R. D. & Griggs, J. E.
Object Type:
Report
System:
The UNT Digital Library
Development of high efficiency collector plates. Final report
Composite metal technology was used to manufacture intermetallic compound (IC) absorption surfaces and to combine them integrally with composite metal tube-in-sheet collector plates. Five material systems in which Al was one component metal and Fe, Cr, or Ni and their alloy was the other pair, were evaluated. All intermetallic compounds had high solar absorptance ..cap alpha.. approx. = 0.9. The AlNi was most promising and ..cap alpha.. > or = 0.95 and epsilon approx. = 0.3 were obtained over a broad range of compounding conditions. After eight months exposure in a flat plate collector enclosure the characteristic properties of AlNi surfaces remained virtually unchanged. Only LCS/Cu composite metal tube-in-sheet collector plates could be manufactured successfully. The technical difficulties associated with integrating the intermetallic compound and tube-in-sheet technologies make the manufacturing of composite metal collector plates at the time being economically unfeasible.
Date:
February 1976
Creator:
Santala, T. & Sabol, R.
Object Type:
Report
System:
The UNT Digital Library
Development of State Interindustry Models for Rocky Mountain Region and California
Interindustry tables have been developed for the eight Rocky Mountain States and California. These tables are based on the 367-order 1967 national interindustry table. The national matrix was expanded to 404 sectors by disaggregating the seven minerals industries to 44 industries. The state tables can be used for energy and other resource analysis. Regional impacts of alternate development strategies can be evaluated with their use. A general computer program has been developed to facilitate construction of state interindustry tables.
Date:
February 1, 1976
Creator:
Sathaye, Jayant A. & Kunin, Leonard
Object Type:
Report
System:
The UNT Digital Library
Digital Model to Predict Effects of Pumping from the Arikaree Aquifer in the Dwyer Area, Southeastern Wyoming
Abstract: ^ digital computer model was used to model an unconfined sandstone aquifer (Arikaree aquifer) in about 340 square miles (880 square kilometers) in southeastern Wyoming. The model was calibrated by comparing observed and calculated changes in the potentiometric surface and leakage from the aquifer along streams during water year 1974. The comparison was fairly good for changes in the potentiometric surface and was good for leakage. The calibrated model was used to predict changes in the potentiometric surface and leakage through water year 1979, assuming no new ground-water development after 1974 and normal recharge to the aquifer. Water-level declines of as much as 14 feet (4.3 meters) were predicted, but much of the area would be relatively unaffected. The total predicted decrease in leakage between water years 1974 and 1979 was about 500 acre-feet (0.6 cubic hectometer) per year; the greatest decrease was predicted along streams closest to areas of pumpage.
Date:
February 1976
Creator:
Lines, Gregory C.
Object Type:
Report
System:
The UNT Digital Library
DIGRTS: a computer code for studying the diffusion of an inert gas in composite solids with reversible trapping. [Fortran IV]
DIGRTS is a computer program for calculating the concentration distribution of an inert gas diffusing through a composite solid which permits reversible trapping of the gas atoms. The program is coded entirely in FORTRAN IV. The composite solid can consist of up to ten regions. These regions are further subdivided in a manner so that the total number of nodes (subdivision points) is less than or equal to 200. The code can readily be modified should these limits be undesirable. The code permits only constant parameters for describing the diffusion process but the extension to allow time dependent parameters is clearly marked in the program. In addition to calculations of the concentration distributions, the time dependent release fraction is also computed. (auth)
Date:
February 1, 1976
Creator:
Oster, C. A.
Object Type:
Report
System:
The UNT Digital Library