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Oral History Interview with Edna Gardner Whyte, February 8, 1979
Interview with Edna Gardner Whyte, a competitive pilot and flight instructor from Garden City, Minnesota. Whyte discusses her family history, her childhood and education, moving to Oregon, her initial interests in flying, her training in nursing, taking up flying, winning her first race, teaching others to fly, becoming a flight instructor full-time, Prohibition bootlegging, races, a crash, Amelia Earhart, the growth of women in aviation, service as a Army Air Corps nurse during World War Two, being a flying salesman, flying helicopters, and building the Aero Valley Flying School.
Date:
February 8, 1979
Creator:
Jenkins, Floyd & White, Edna Gardner
Object Type:
Book
System:
The UNT Digital Library
Capture cross section and gamma-ray spectrum calculations for medium-weight nuclei. [Double-peak, energy-dependent Breit-Wigner model]
A double-peak, energy-dependent Breit-Wigner model of the E1 gamma-ray strength function was applied to nuclei from As to Rh, to predict their neutron capture cross sections and capture gamma-ray spectra. A consistent set of model parameters was obtained in this mass region to describe the step in the low-energy tail of the E1 strength function. This step allows agreement with photonuclear data at high energies, the correct GAMMA/sub gamma/ to be obtained for agreement with neutron capture cross-section data, and the calculation of the observed hardness in the capture gamma-ray spectra. For nuclei at or near the closed, N = 50 shell, however, the double-peak assumption breaks down. In these cases, good results are still obtained if the same set of model parameters is applied, except that the E1 strength function is formulated in terms of the first, narrower peak. 8 figures.
Date:
November 14, 1979
Creator:
Gardner, M. A. & Gardner, D. G.
Object Type:
Article
System:
The UNT Digital Library
Oral History Interview with O. J. Curry, March 29, 1979
Interview with Dr. O. J. Curry from Santa Anna, Texas, the first dean of the School of Business at NTSU. Curry discusses his family history, childhood, education, becoming a teacher and high school principal, his marriage, getting his doctorate, the Great Depression, his time at the University of Arkansas and other institutions, his work with the petroleum industry during World War II, coming to NTSU, building the School Business, much about his tenure as dean, and his thoughts on business and education.
Date:
March 29, 1979
Creator:
Jenkins, Floyd
Object Type:
Book
System:
The UNT Digital Library
Letter thanking Clara Luper for serving on the Claude J. Murphy birthday celebration committee
Letter thanking Clara Luper for serving on a committee and explaining the ways the event was broadcasted.
Date:
August 15, 1979
Creator:
Murphy, Claude J.
Object Type:
Letter
System:
The Gateway to Oklahoma History
Oral History Interview with O. J. Curry, March 29, 1979
Interview with O. J. Curry, Dean Emeritus of the College of Business at North Texas State University in Denton, Texas, regarding his background growing up on the family farm, his own education, experience as dean and what sort of materials were needed in the business department, staffing difficulties faced there, and changes in the education system over time.
Date:
March 29, 1979
Creator:
Jenkins, Floyd & Curry, O. J.
Object Type:
Book
System:
The UNT Digital Library
Cycling indices for ecosystem models
The study of ecosystems is aided by representing structural and functional groups of organisms or processes as discrete components. A complex compartment model will explicitly map pathways from one compartment to another and specify transfer rates. This quantitative description allows insight into the dynamics of flow of nutrients, toxic chemicals, radionuclides, or energy. Three new indices that calculate compartment-specific probabilities of occurrence and recycling and illustrate the problem of applying these indices to ecosystem models are presented.
Date:
January 1, 1979
Creator:
Carney, J. H.; Gardner, R. H.; Mankin, J. B. & DeAngelis, D. L.
Object Type:
Article
System:
The UNT Digital Library
Magnetic field measurements on ISABELLE storage ring magnets
In 1978 the magnetic field shapes of six ISABELLE prototype dipole magnets were measured in detail. All the harmonic terms that are forbidden by symmetry in dipole magnets are found to have values that are zero to within the allowed tolerances. This result indicates that the random errors in conductor placement are within tolerances and that the assembly techniques are satisfactory in this regard. However, the first allowed error term in a dipole magnet, the sextupole term, is much too large, and varies greatly from magnet to magnet resulting in field errors at the edge of the desired good field region that are 10/sup -3/ of the central field value, whereas the tolerable field errors are of the order of 10/sup -4/ of the central field value. This large sextupole term has been traced to assembly errors which yield a coil assembly which instead of being circular in cross section is racetrack shaped, with the vertical axis being 10 to 20 thousandths of an inch greater than the horizontal axis. This problem will be corrected in the future production series.
Date:
January 1, 1979
Creator:
Bleser, E.; Dahl, P.; Gardner, D.; Kaugerts, J.; McInturff, A.; Robins, K. et al.
Object Type:
Article
System:
The UNT Digital Library
Temperature-gradient and heat flow data, Grass Valley, Nevada
A series of 16 shallow and intermediate-depth temperature-gradient holes were drilled for Sunoco Energy Development Co. in Grass Valley, Pershing County, Nevada, on leases held by Aminoil USA, Inc., under the cost-sharing industry-linked program of the Department of Energy. Thirteen shallow (85-152 m) and 3 intermediate-depth (360-457 m) holes were completed and logged during the period June through September, 1979. The locations of these holes and of pre-existing temperature-gradient holes are shown on plate 1. This report constitutes a final data transmittal and disclosure of results. The drilling subcontractor was Southwest Drilling and Exploration, Inc. of Central, Utah. They provided a Gardner-Denver 15W rig, a 3-man crew, and supporting equipment. A l l holes were drilled with mud as the circulating medium. Drilling histories for each hole are summarized in table 1. GeothermEx, Inc. performed on-site geological descriptions of the cuttings; obtained several temperature profiles for each hole, including an equilibrium profile taken 23 days or more after cessation of drilling; selected samples for thermal conductivity measurements; integrated temperature, temperature-gradient, and heat-flow data obtained in this project with published values; and prepared this report.
Date:
November 1, 1979
Creator:
Koenig, James B. & Gardner, Murray C.
Object Type:
Report
System:
The UNT Digital Library
New parameterization of the E1 gamma-ray strength function
The giant dipole (GD) parameters of peak energy, width, and cross section were satisfactorily correlated for elements from V to Bi, assuming two overlapping peaks with a separation dependent on deformation. The energy dependence of the GD resonance is assumed to have a Breit-Wigner form, but with an energy-dependent width. The resulting gamma-ray strength function model is used to predict neutron capture cross sections and gamma-ray spectra for isotopes of Ta, Os, and Au. 23 references.
Date:
October 18, 1979
Creator:
Gardner, D. G. & Dietrich, F. S.
Object Type:
Article
System:
The UNT Digital Library
Parameter uncertainty and model predictions: a review of Monte Carlo results
Studies of parameter variability by Monte Carlo analysis are reviewed using repeated simulations of the model with randomly selected parameter values. At the beginning of each simulation, parameter values are chosen from specific frequency distributions. This process is continued for a number of iterations sufficient to converge on an estimate of the frequency distribution of the output variables. The purpose was to explore the general properties of error propagaton in models. Testing the implicit assumptions of analytical methods and pointing out counter-intuitive results produced by the Monte Carlo approach are additional points covered.
Date:
January 1, 1979
Creator:
Gardner, R. H. & O'Neill, R. V.
Object Type:
Article
System:
The UNT Digital Library
Advanced materials for alternative fuel capable directly fired heat engines
The first conference on advanced materials for alternative fuel capable directly fired heat engines was held at the Maine Maritime Academy, Castine, Maine. It was sponsored by the US Department of Energy, (Assistant Secretary for Fossil Energy) and the Electric Power Research Institute, (Division of Fossil Fuel and Advanced Systems). Forty-four papers from the proceedings have been entered into EDB and ERA and one also into EAPA; three had been entered previously from other sources. The papers are concerned with US DOE research programs in this area, coal gasification, coal liquefaction, gas turbines, fluidized-bed combustion and the materials used in these processes or equipments. The materials papers involve alloys, ceramics, coatings, cladding, etc., and the fabrication and materials listing of such materials and studies involving corrosion, erosion, deposition, etc. (LTN)
Date:
December 1, 1979
Creator:
Fairbanks, J. W. & Stringer, J. (eds.)
Object Type:
Article
System:
The UNT Digital Library
Simulation in the service of environmental research: experience with a stream ecosystem project
A perspective on the use of simulation modeling as one working component of a complex ecosystem research project is presented. Experiences with modeling in the context of a research program dealing with nutrient dynamics in stream ecosystems are documented. As the project progressed, the role of modeling changed, resulting in four distinct models, each developed for a specific purpose. The models have been used to screen initial hypotheses, set up details of the experimental design, analyze results, and serve as a logical framework for investigating mechanistic details of the ecosystem. Through time, individual models were discarded, not because they were inadequate, but because they were irrelevant to the next stage of the project. It was particularly interesting to note how the importance of validation, as well as its characteristics, have changed during this process.
Date:
January 1, 1979
Creator:
O'Neill, R.V.; Emanuel, W.R.; Newbold, J.D. & Elwood, J.W.
Object Type:
Article
System:
The UNT Digital Library
Geothermal observation wells, Mt. Hood, Oregon. Final report, October 4, 1977-July 9, 1979
Exploration drilling operations were conducted which included the deepening of an existing hole, designated as Old Maid Flat No. 1, from 1850 ft (564 m) to 4002 (1220 m) on the western approaches to Mt. Hood and the drilling of three new holes ranging from 940 ft (287 m) to 1340 ft (409 m). The Clear Fork hole, located in Old Maid Flat, was drilled to 1320 ft (402 m). The Zigzag hole was drilled to 940 ft (287 m) at the southwestern base of Mt. Hood in the Zigzag River valley. The remaining hole was drilled on the Timberline Lodge grounds which is on the south flank of Mt. Hood at an elevation of about 6000 ft (1829 m) above sea level. The deepening project designated as Old Maid Flat No. 1 encountered a maximum bottom hole temperature of about 180/sup 0/F (82/sup 0/C) and is to this date the deepest exploratory hole in the Mt. Hood vicinity. No significant drilling problems were encountered. The Clear Fork and Zigzag River holes were completed without significant problems. The Timberline Lodge hole encountered severe drilling conditions, including unconsolidated formations. Two strings of tools were left in the hole from structural collapse …
Date:
November 1, 1979
Creator:
Covert, W. F. & Meyer, H. J.
Object Type:
Report
System:
The UNT Digital Library
Development of the ion source for PDX neutral beam injection
The paper describes the development of the ion source for neutral beam injection heating of PDX plasma. After a brief description of the plasma generator, the performance characteristics of the source, with different types of grids, are described. Based on test stand results it is concluded that at least two different versions of the source should be able to meet and even exceed the neutral power and energy requirements expected out of PDX injectors.
Date:
January 1, 1979
Creator:
Menon, M. M.; Tsai, C. C.; Gardner, W. L.; Barber, G. C.; Haselton, H. H.; Ponte, N. S. et al.
Object Type:
Article
System:
The UNT Digital Library
Cross section measurement for the /sup 52/Cr(n,p)/sup 52/V reaction near threshold
Cross sections for this reaction were determined in the range 5.3 to 9 MeV using a previously-reported pulsed-accelerator technique to measure gamma ray activity from 3.75 m /sup 52/V. Very few experimental data have been reported for this reaction, and little was known about the threshold region prior to the present experiment. The results of this work (in conjunction with other available cross section information) were used in the computation of fission-spectrum averages which are of interest for reactor applications.
Date:
January 1, 1979
Creator:
Smith, D. L. & Meadows, J. W.
Object Type:
Article
System:
The UNT Digital Library
Interpretation of well log data from four drill holes at Roosevelt Hot Springs KGRA
Well logs from four drill holes, Utah State Geothermal Wells 14-2, 52-21 and 72-16 and Geothermal Power Corporation's thermal gradient hole GPC-15 have been digitized, plotted and studied. This study had three objectives: (1) to present the well log data in a convenient format for easy study, (2) to determine the nature of the geothermal reservoir rock and fluid properties, and (3) to make some inference on fluid entry locations in the boreholes and their effect on heat flow. The temperature logs and gradients computed from these logs have been used to examine heat flow in the vicinity of the four drill holes. Assumed and calculated thermal conductivities have been used in the analyses, 4 mcal/cm /sup 0/C sec for the alluvium and 7 mcal/cm /sup 0/C sec for the crystalline rocks. The data indicate that 14-2 and 72-16 reside in a dominantly convective heat flow environment, whereas GPC-15 and 52-21 reside in a dominantly conductive heat flow environment. The convective regions are believed to be fracture controlled and only portions of each hole reside totally in a convective region; in each case it is the upper bedrock portion of the hole. In every case the alluvium or upper portion …
Date:
December 1, 1979
Creator:
Glenn, W. E. & Hulen, J. B.
Object Type:
Report
System:
The UNT Digital Library
Photoelectron spectroscopy of heavy atoms and molecules
The importance of relativistic interactions in the photoionization of heavy atoms and molecules has been investigated by the technique of photoelectron spectroscopy. In particular, experiments are reported which illustrate the effects of the spin-orbit interaction in the neutral ground state, final ionic states and continuum states of the photoionization target.
Date:
July 1, 1979
Creator:
White, M.G.
Object Type:
Report
System:
The UNT Digital Library
Beam steering due to displaced slots
Using a two-dimensional algorithm, steering of triode slots was investigated for the first time with a reasonable accounting of the ion extraction sheath.
Date:
September 1, 1979
Creator:
Whealton, J. H.; McGaffey, R. W. & Jaeger, E. F.
Object Type:
Report
System:
The UNT Digital Library
Simulation of land-use patterns affecting the global carbon cycle. [Reconstruction and projection of CO/sub 2/ scenarios from 1860 to 2460]
Past increase of atmospheric CO/sub 2/ involves significant ntributions from both fossil and nonfossil (biospheric) sources. A simulation model was used to reconstruct changes since 1860 and project four hypothetical future scenarios of CO/sub 2/ injection to 2460. Nineteen compartments and their exchanges of carbon were considered. Areal extent of tropical forests, other wooded ecosystems, and nonforests were incorporated into the model. Rapidly and slowly exchanging pools of carbon per unit area, and net primary production for each pool and exosystem group, were projected by integrating income-loss differential equations numerically using CSMP programming language. Estimated cumulative releases of CO/sub 2/ from fossil fuels (plus cement) near 120 Gtons of carbon (1 Gton = 10/sup 9/ metric tons) from 1860 to 1970 were assumed to equal prompt and delayed releases from forest clearing. Limits of exploitable forest area and biomass were evaluated and found to contribute much less future CO/sub 2/ than the usable coal, oil, gas, and oil shale. Ultimate release from the latter (7500 +- 2500 x 10/sup 9/ tons of C) could increase atmospheric CO/sub 2/ manyfold: doubling the assumed 1860 levels as early as (1) year 2025 for assumed nominal scenario (expanding releases slightly less rapidly than …
Date:
January 1, 1979
Creator:
Chan, Y.H.; Olson, J.S. & Emanuel, W.R.
Object Type:
Report
System:
The UNT Digital Library
Dominance of strong absorption in /sup 9/Be + /sup 28/Si elastic scattering. [121 and 201. 6 MeV: angular distribution, optical model]
Because the character of the scattering changes markedly from /sup 6/Li to /sup 12/C projectiles, a study of the /sup 9/Be + /sup 28/Si system was undertaken to examine the transition region. Data were measured at 121.0 and 201.6 MeV. Low-energy data of other investigators were used to carry out global optical model searches. It was found that the elastic scattering of /sup 9/Be from /sup 28/Si is dominated at all energies by relatively strong absorption. This removes much of the sensitivity to the real potential, and even elastic scattering data spanning a range of energies from 13 to 201 MeV do not allow a unique determination of the potential parameters. There is at least circumstantial evidence that /sup 6/Li scattering at low energies (and by implication also /sup 9/Be scattering) may be strongly influenced by breakup processes, although it is not clear that the mechanism is the same. 3 figures, 1 table. (RWR)
Date:
July 1, 1979
Creator:
Zisman, M. S.; Cramer, J. G.; DeVries, R. M.; Goldberg, D. A. & Watson, J. W.
Object Type:
Article
System:
The UNT Digital Library
Selective paint development. Technical progress report, 5 December 1978-31 July 1979
Eighteen hundred square feet of aluminum foil were coated with thickness-sensitive selective paint. The feasibility of a high speed, large-scale roller coating technique was demonstrated. Coating thermal stability, weathering and humidity resistance, and effects of pigment particle size on coating optical properties were studied. Thickness-insensitive paint with urethane binder was evaluated. A medium scale (1 kg) of thickness-insensitive paint solution was prepared which achieved an ..cap alpha../sub s/ of 0.90 and epsilon of 0.35.
Date:
August 1, 1979
Creator:
McKelvey, W D; Zimmer, P B & Lin, R J.H.
Object Type:
Report
System:
The UNT Digital Library
Dominance of Strong Absorption in 9Be + 28Si Elastic Scattering
The elastic scattering of {sup 9}Be + {sup 28}Si has been measured at laboratory energies of 121.0 and 201.6 MeV. These data have been combined with existing lower energy {sup 9}Be + {sup 28}Si data in order to carry out a global optical model analysis. Calculations employing Woods-Saxon potentials yield good fits to the data without requiring explicitly energy-dependent parameters. In contrast, using a proximity form for the real potential requires an explicitly energy dependent Woods-Saxon imaginary potential in order to achieve comparable quality fits. Notch perturbation calculations have been utilized to locate the radial region of the potential to which the scattering is sensitive. At all energies the imaginary potential is stronger than the real potential at the radius of maximum sensitivity. This dominance of the absorptive potential greatly limits the amount of information which can be gained about the real potential. Comparison of the {sup 9}Be + {sup 28}Si system with other light heavy ion systems such as {sup 6}Li + {sup 28}Si, {sup 12}C + {sup 28}Si, and {sup 16}O + {sup 28}Si suggests that the weak binding of {sup 9}Be may be responsible for the strong absorption in this case.
Date:
December 1, 1979
Creator:
Zisman, M. S.; Cramer, J. G.; Goldberg, D. A.; Watson, J. W. & Devries, R. M.
Object Type:
Article
System:
The UNT Digital Library
Development of new techniques of using irradiation in the genetic improvement of warm season grasses, the assessment of their genetic and cytogenetic effects and biomass production from grass. Progress report, November 1, 1978-October 31, 1979
The following topics are discussed: altering protein quantity and quality in pearl millet grain by irradiation and mutation breeding; effect of nitrogen and genotype (male and female) on pearl millet grain; irradiation breeding of sterile triploid turf bermudagrasses; irradiation breeding of sterile Coastcross-1, a forage grass hybrid to increase winterhardiness; heterosis resulting from crossing specific irradiation induced mutants with their normal inbred parent; economic assessment of irradiation induced mutants; use of ethidium bromide to create cytoplasmic male sterile mutants in pearl millet; use of mitomycin and streptomycin to create cytoplasmic male sterile mutants in pearl millet; biomass of napiergrass; evaluation of mutagen induced lignin mutants in sorghum; interspecific transfer of germplasm using gamma radiation; production of homozygous translocation tester stocks; use of radiation to control the reproductive behavior in plants; genetics of radiation induced mutations; response of pearl millet pollen to gamma radiation; and nature of morphological changes in sterile triploid bermudagrass on golf courses.
Date:
June 1, 1979
Creator:
Burton, G W & Hanna, W W
Object Type:
Report
System:
The UNT Digital Library
Phase 2 of the array automated assembly task for the Low Cost Solar Array Project. Final report, October 1, 1978-October 30, 1979
The process sequence for the fabrication of dendritic web silicon into solar panels has been modified to include aluminum back surface field formation. Sputtering is the preferred method for depositing the aluminum. Plasma etching has been shown to be a feasible technique for pre-diffusion cleaning of the web. This would replace wet chemical cleaning. Several contacting systems have been studied. The total plated Pd-Ni system (Motorola Process) is not compatible with our process sequence; however, the evaporated TiPd-electroplated Cu system has been shown stable under life testing. Ultrasonic bonding parameters have been determined for various interconnect and contact metals but the yield of the process is not sufficiently high to use for module fabrication at this time. Over 400 solar cells, about 11 cm/sup 2/ in area have been fabricated according to the modified sequence. No sub-process incompatibility was seen. These cells have been used to fabricate four demonstration modules. A cost analysis (SAMICS) of the modified process sequence resulted in a selling price of $0.75/peak watt (1980$ in 1986).
Date:
January 1, 1979
Creator:
Campbell, R. B.; Davis, J. R.; Ostroski, J. W.; Rai-Choudhury, P.; Rohatgi, A.; Seman, E. J. et al.
Object Type:
Report
System:
The UNT Digital Library