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[Photograph 2012.201.B0553.0378]

Photograph used for a story in the Daily Oklahoman newspaper.
Date: July 1, 1993
Creator: Gooch, Steve
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0100.0071]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "In the spirit of Independence Day, Ryan Bennett, 10, and Nick Robertson, 10 place flags in front of homes in the Bluff Creek addition in northwest Oklahoma City on Thursday."
Date: July 1, 1993
Creator: Beckel, Jim
Object Type: Photograph
System: The Gateway to Oklahoma History
Alternative Feedstocks Program Technical and Economic Assessment: Thermal/Chemical and Bioprocessing Components (open access)

Alternative Feedstocks Program Technical and Economic Assessment: Thermal/Chemical and Bioprocessing Components

This resource document on biomass to chemicals opportunities describes the development of a technical and market rationale for incorporating renewable feedstocks into the chemical industry in both a qualitative and quantitative sense. The term "renewable feedstock?s" can be defined to include a huge number of materials such as agricultural crops rich in starch, lignocellulosic materials (biomass), or biomass material recovered from a variety of processing wastes.
Date: July 1, 1993
Creator: Bozell, J. J. & Landucci, R.
Object Type: Report
System: The UNT Digital Library
The Tulia Herald (Tulia, Tex.), Vol. 85, No. 26, Ed. 1 Thursday, July 1, 1993 (open access)

The Tulia Herald (Tulia, Tex.), Vol. 85, No. 26, Ed. 1 Thursday, July 1, 1993

Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date: July 1, 1993
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Lower hybrid wave coupling in PBX-M (open access)

Lower hybrid wave coupling in PBX-M

The coupling of the waves launched from a 4.6 GHz lower hybrid system into PBX-M plasmas has been studied for both L-mode and H-mode plasmas. The characteristics of the plasma in front of the LH coupler have been measured with a fast Langmuir probe. The reflected power of the coupler has been measured across the transition to H-mode as a function of phase and the distance between the coupler and the separatrix. A transient rise in the LH reflection coefficient was observed near the L-H transition under some conditions. Coupling depends primarily on the electron density in the vicinity of the coupler, and proper positioning of the coupler can compensate for changes in the plasma edge due to H-mode transitions. Good coupling can be maintained throughout the H-mode.
Date: July 1, 1993
Creator: Bell, R.E.; Bernabei, S.; Greenough, N.; Lagin, L.; Leblanc, B.; Okabayashi, M. et al.
Object Type: Report
System: The UNT Digital Library
The radial scale length of turbulent fluctuations in the main core of TFTR plasmas (open access)

The radial scale length of turbulent fluctuations in the main core of TFTR plasmas

A new theory of microwave reflectometry in tokamaks has been developed which accounts for all the major characteristics of waves reflected from strong fluctuations near the cutoff layer. The theory has been used for studying the turbulence in the main core of neutral beam heated plasmas of the TFTR tokamak in the supershot regime. The results indicate that the radial correlation length of density fluctuations is a weak decreasing function of beam power, from [approximately]4 cm in Ohmic to [approx]2 cm at 14 MW of heating power. This corresponds to the range of wavelengths k[sub [perpendicular]][rho][sub i][approx]0.1--0.3. Over the same interval of heating powers, the level of density fluctuations is observed to steadily increase with beam power by more than an order of magnitude. This trend is inconsistent with mixing length estimates of the fluctuation level.
Date: July 1, 1993
Creator: Mazzucato, E. & Nazikian, R.
Object Type: Report
System: The UNT Digital Library
Bogata News (Bogata, Tex.), Vol. 83, No. 11, Ed. 1 Thursday, July 1, 1993 (open access)

Bogata News (Bogata, Tex.), Vol. 83, No. 11, Ed. 1 Thursday, July 1, 1993

Weekly newspaper from Bogata, Texas that includes local, state, and national news along with advertising.
Date: July 1, 1993
Creator: Nichols, Nanalee & Nichols, Thomas
Object Type: Newspaper
System: The Portal to Texas History
ARIES tokamak reactor study (open access)

ARIES tokamak reactor study

This report examines the feasibility of a standard poloidal diverter design for ARIES- 2/4 with the determination of the peak thermal loading on, and the plasma temperature facing a poloidal double null diverter. The ARIES-2/4 reactors produce 2,141 MW of fusion power of which 1712 MW is contained in the neutron channel. Of the remaining 429 MW of charged particle power, 47 MW is radiated from the core by bremsstrahlung and synchrotron modes to the vessel walls. The remaining 382 MW of charged particle or transport power crosses the core/edge interface. The fact that the bulk of the power is contained in the neutron channel makes the application of a poloidal divertor possible. The ARIES-2/4 diverter constraints for peak heat load and peak particle temperature are set by current technology and materials knowledge. Divertor geometry constraints are imposed by the plasma equilibrium and the 2/4 vacuum vessel. The diverter heat load and plasma temperatures are determined from edge particle and energy balances. These balances are important characteristics of the plasma edge because the transport power from the plasma core must pass through the edge and be deposited on tokamak components. The Braams' B2 code is a multifluid ion and electron …
Date: July 1, 1993
Creator: Steiner, D.
Object Type: Report
System: The UNT Digital Library
Asymptotic analysis: Working Note No. 2, Approximation of integrals (open access)

Asymptotic analysis: Working Note No. 2, Approximation of integrals

In this note we discuss the approximation of integrals that depend on a parameter. The basic tool is simple, namely, integration by parts. Of course, the power of the tool is evidenced in applications. The applications are many; they include Laplace integrals, generalized Laplace integrals, Fourier integrals, and Stokes' method of stationary phase for generalized Fourier integrals. These results illustrate beautifully Hardy's concept of applications of mathematics, that is, certain regions of mathematical theory in which the notation and the ideas of the (method of integration by parts] may be used systematically with a great gain in clearness and simplicity''. The notation differs slightly from Working Note No. 1, for reasons that are mainly historical. The asymptotic analysis of integrals originated in complex analysis, where the (real or complex) parameter, usually denoted by x, is usually introduced in such a way that the interesting behavior of the integrals occurs when x [yields] [infinity] in some sector of the complex plane. As there is nothing sacred about notation, and historical precedent is as good a guide as any, we follow convention and denote the parameter by x, focusing on the behavior of integrals as x [yields] [infinity] along the real axis …
Date: July 1, 1993
Creator: Garbey, M. (Lyon-1 Univ., 69 - Villeurbanne (France). Lab. d'Analyse Numerique) & Kaper, H.G. (Argonne National Lab., IL (United States))
Object Type: Report
System: The UNT Digital Library
Thermally excited proton spin-flip laser emission in tokamaks (open access)

Thermally excited proton spin-flip laser emission in tokamaks

Based on statistical thermodynamic fluctuation arguments, it is shown here for the first time that thermally excited spin-flip laser emission from the fusion product protons can occur in large tokamak devices that are entering the reactor regime of operation. Existing experimental data from TFTR supports this conjecture, in the sense that these measurements are in complete agreement with the predictions of the quasilinear theory of the spin-flip laser.
Date: July 1, 1993
Creator: Arunasalam, V. & Greene, G. J.
Object Type: Report
System: The UNT Digital Library
Advanced heat pump cycle (open access)

Advanced heat pump cycle

The desorption and absorption process of a vapor compression heat pump with a solution circuit (VCHSC) proceeds at gliding temperature intervals, which can be adjusted over a wide range. In case that the gliding temperature intervals in the desorber and the absorber overlap, a modification of the VCHSC employing a desorber/absorber heat exchange (DAHX) can be introduced, which results in an extreme reduction of the pressure ratio. Although the DAHX-cycle has features of a two-stage cycle, it still requires only one solution pump, one separator and one compressor. Such a cycle for the working pair ammonia/water is built in the Energy Laboratory of the Center for Environmental Energy Engineering at the University of Maryland. The experimental results obtained with the research plant are discussed and compared to those calculated with a simulation program. The possible temperature lift between heat source and heat sink depending on the achievable COP are presented.
Date: July 1, 1993
Creator: Groll, E.A. & Radermacher, R.
Object Type: Report
System: The UNT Digital Library
Kinetic theory of geomagnetic pulsations 2. Ion flux modulations by transverse waves (open access)

Kinetic theory of geomagnetic pulsations 2. Ion flux modulations by transverse waves

Ion flux modulations by ultra-low-frequency radially polarized geomagnetic pulsations are examined theoretically based on the gyrokinetic analysis of Chen and Hasegawa. The theoretical results thus contain important effects such as plasma anisotropy and inhomogeneities, finite Larmor radii, realistic magnetic field, magnetic trapping, and wave mode structures. The predicted properties are consistent with the satellite observations [Takahashi et al.] and further support the drift-Alfven ballooning mode as a primary instability candidate. The analysis, furthermore, demonstrates that, in the case of highly energetic ions, it is crucial to include the finite-Larmor-radius effects self-consistently in order to properly analyze and compare with the satellite observations.
Date: July 1, 1993
Creator: Liu Chen (Princeton Plasma Physics Lab., NJ (United States)) & Hasegawa, Akira (Osaka Univ. (Japan))
Object Type: Report
System: The UNT Digital Library
The theory of relativistic heavy ion collisions. [Dept. of Physics, State Univ. of New York at Stony Brook] (open access)

The theory of relativistic heavy ion collisions. [Dept. of Physics, State Univ. of New York at Stony Brook]

This program began in January 1993. Its primary goals are studies of highly excited matter and its production in nuclear collisions at very high energies. After a general orientation on the project, abstracts describing the contents of completed papers and providing some details of current projects are given. Principal topics of interest are the following: the dynamics of nuclear collisions at very high energies (RHIC and LHC), the dynamics of nuclear collisions at AGS energies, high-temperature QCD and the physics of the quark-gluon plasma, and the production of strangelets and other rare objects.
Date: July 1, 1993
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Inflow characteristics associated with high-blade-loading events in a wind farm (open access)

Inflow characteristics associated with high-blade-loading events in a wind farm

The stochastic characteristics of the turbulent inflow have been shown to be of major significance in the accumulation of fatigue in wind turbines. Because most of the wind turbine installations in the US have taken place in multi-turbine or wind farm configurations, the fatigue damage associated with the higher turbulence levels within such arrangements must be taken into account when making estimates of component service lifetimes. The simultaneous monitoring of two adjacent wind turbines over a wide range of turbulent inflow conditions has given the authors more confidence in describing the structural load distributions that can be expected in such an environment. The adjacent testing of the two turbines allowed the authors to postulate that observed similarities in the response dynamics and load distributions could be considered quasi-universal, while the dissimilarities could be considered to result from the differing design of the rotors. The format has also allowed them to begin to define appropriate statistical load distribution models for many of the critical components in which fatigue is a major driver of the design. In addition to the adjacent turbine measurements, they also briefly discuss load distributions measured on a teetered-hub turbine.
Date: July 1, 1993
Creator: Kelley, N. D.
Object Type: Article
System: The UNT Digital Library
Cherokeean/Herald (Rusk, Tex.), Vol. 145, No. 22, Ed. 1 Thursday, July 1, 1993 (open access)

Cherokeean/Herald (Rusk, Tex.), Vol. 145, No. 22, Ed. 1 Thursday, July 1, 1993

Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date: July 1, 1993
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Advanced thermally stable jet fuels. Technical progress report, February 1993--March 1993 (open access)

Advanced thermally stable jet fuels. Technical progress report, February 1993--March 1993

This project was initiated on August 1, 1992. The starting date resulted in this project being one month out of synchronization with the normal quarterly calendar (i.e., January, April, July, and October). On advice of Mr. John Augustine, DOE/PETC, the present report is prepared to cover only two months work, so that future quarterly reports will be aligned with the conventional reporting schedule. A significant pressure dependence was observed for the pyrolysis of n-tetradecane at 450{degree}C for 30 min. It appears that at least two processes are affected by the reactant pressure, but in opposite directions. The influence of inert gas pressure is dependent on both the initial sample volume and the pressure range. However, when the inert gas pressure is within a certain specific range, the changes in the sample volume have no impact on n-tetradecane conversion. Below or above this range, increasing inert gas pressure can either decrease or increase conversion, depending on the sample volume.
Date: July 1, 1993
Creator: Schobert, H. H.; Eser, S.; Song, C.; Hatcher, P. G.; Walsh, P. M. & Coleman, M. M.
Object Type: Report
System: The UNT Digital Library
Study of the Nevada Test Site using Landsat satellite imagery (open access)

Study of the Nevada Test Site using Landsat satellite imagery

In the period covered by the purchase order CSIS has obtained one Landsat image and determined that two images previously supplied to the principal investigator under a subcontract with George Washington University were inherently defective. We have negotiated with EOSAT over the reprocessing of those scenes and anticipate final delivery within the next few weeks. A critical early purchase during the subcontract period was of an EXABYTE tape drive, Adaptec SCSI interface, and the appropriate software with which to read Landsat images at CSIS. This gives us the capability of reading and manipulating imagery in house without reliance on outside services which have not proven satisfactory. In addition to obtaining imagery for the study, we have also performed considerable analytic work on the newly and previously purchased images. A technique developed under an earlier subcontract for identifying underground nuclear tests at Pahute Mesa has been significantly refined, and similar techniques were applied to the summit of Rainier Mesa and to the Yucca Flats area. An entirely new technique for enhancing the spectral signatures of different regions of NTS was recently developed, and appears to have great promise of success.
Date: July 1, 1993
Creator: Zimmerman, P. D.
Object Type: Report
System: The UNT Digital Library
Theoretical Studies in Hadronic and Nuclear Physics. Progress Report, December 1, 1992--June 30 , 1993 (open access)

Theoretical Studies in Hadronic and Nuclear Physics. Progress Report, December 1, 1992--June 30 , 1993

Research in the Maryland Nuclear Theory Group focusses on problems in four basic areas of current relevance. The section on Hadrons in Nuclei reports research into the ways in which the properties of nucleons and the mesons which play a role in the nuclear force are modified in the nuclear medium. QCD sum rules supply a new insight into the decrease of the nucleon`s mass in the nuclear medium. The quark condensate decreases in nuclear matter, and this is responsible for the decrease of the nucleon`s mass. The section on the Structure of Hadrons reports progress in understanding the structure of the nucleon. These results cover widely different approaches -- lattice gauge calculations, QCD sum rules, quark-meson models with confinement and other hedgehog models. Progress in Relativistic Nuclear Physics is reported on electromagnetic interactions in a relativistic bound state formalism, with applications to elastic electron scattering by deuterium, and on application of a two-body quasipotential equation to calculate the spectrum of mesons formed as bound states of a quark and antiquark. A Lorentz-invariant description of the nuclear force suggests a decrease of the nucleon`s mass in the nuclear medium similar to that found from QCD sum rules. Calculations of three-body …
Date: July 1, 1993
Creator: Griffin, J. J. & Cohen, T. D.
Object Type: Report
System: The UNT Digital Library
Synthesis and characterization of novel ternary and quaternary reduced molybdenum oxides (open access)

Synthesis and characterization of novel ternary and quaternary reduced molybdenum oxides

This thesis is divided into 8 sections: synthesis and characterization (char.) of Ba{sub 3}Mo{sub 18}O{sub 28} (an oligomer with four traps edge-sharing Mo octahedra); synthesis and char. of K{sub x}M{sub y}Mo{sub 14}O{sub 22} (M=Sn, Pb, Sr) (oligomers with three traps edge-sharing Mo octahedra); synthesis and char. of K{sub 0.19}Ba{sub 3.81}Mo{sub 22}O{sub 34} (an oligomer with five traps edge-sharing Mo octahedra); synthesis and char. of Ti{sub 0.31}Fe{sub 1.69}Mo{sub 4}O{sub 7} (a material containing closest-packing of infinite chains of octahedral Mo clusters); synthesis and char. of K{sub x}M{sub 2-x}Mo{sub 10}O{sub 16} (M=Ca, Sr, Gd) (oligomers with two traps edge-sharing Mo octahedra); synthesis and char. of the RE{sub 4}Mo{sub 4}O{sub 11} series; synthesis and char. of Pb{sub 0. 31}WO{sub 3} (a tetragonal tungsten bronze containing lead); and examination of superstructure in Fe{sub 1.89}Mo{sub 4.11}O{sub 7}, Sn{sub 0.9}Mo{sub 4}O{sub 6}, InMo{sub 4}O{sub 6}, and Mn{sub 1. 5}Mo{sub 8}O{sub 11} by electron microscopy.
Date: July 1, 1993
Creator: Schimek, G. L.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Applicability of digital terrain analyses to wind energy prospecting and siting (open access)

Applicability of digital terrain analyses to wind energy prospecting and siting

The recent publication of the Digital Elevation Model (DEM) database by the US Geological Survey (USGS) has provided a unique opportunity for the development of cost-effective wind energy prospecting technology. This database contains terrain elevation values on a Latitude-Longitude grid with a resolution of 3 arc-seconds (about 90 m) for the contiguous United States, Hawaii, and Puerto Rico. This database has been coupled with software that will produce shaded-relief maps on a laser printer in a format compatible with the state wind power maps in the US wind energy atlas. By providing a much higher resolution of the terrain features than was possible when the US atlas was prepared, these maps can be useful in general wind prospecting activities. As highly resolved as the 90-m DEM data seem to be when compared to the atlas grid, they still appear to be too coarse to resolve terrain features in the detail required for local wind flow characterization and wind plant layout. Gridded terrain data at about 10-m resolution are available from the USGS for some areas of the United States. In areas where these data are unavailable, they may be generated by digitizing and gridding the contours from a 1:24,000-scale USGS …
Date: July 1, 1993
Creator: Wendell, L. L.; Gower, G. L.; Birn, M. B. & Castellano, C. C.
Object Type: Article
System: The UNT Digital Library
Development of the Integrated Environmental Control Model: Performance Models of Selective Catalytic Reduction NO{sub X} Control Systems. Quarterly Progress Report, [April 1, 1993--June 30, 1993] (open access)

Development of the Integrated Environmental Control Model: Performance Models of Selective Catalytic Reduction NO{sub X} Control Systems. Quarterly Progress Report, [April 1, 1993--June 30, 1993]

This report concerns the Integrated Environmental Control Model (IECM) created and enhanced by Carnegie Mellon University (CMU) for the US Department of Energy`s Pittsburgh Energy Technology Center (DOE/PETC). The IECM provides a capability to model various conventional and advanced processes for controlling air pollutant emissions from coal-fired power plants before, during, or after combustion. The principal purpose of the model is to calculate the performance, emissions, and cost of power plant configurations employing alternative environmental control methods. The model consists of various control technology modules, which may be integrated into a complete utility plant in any desired combination. In contrast to conventional deterministic models, the IECM offers the unique capability to assign probabilistic values to all model input parameters, and to obtain probabilistic outputs in the form of cumulative distribution functions indicating the likelihood of different costs and performance results.
Date: July 1, 1993
Creator: Frey, H. C.
Object Type: Report
System: The UNT Digital Library
Fire testing of 55 gallon metal waste drums for dry waste storage (open access)

Fire testing of 55 gallon metal waste drums for dry waste storage

The primary goal of this test program was to conduct a series of fire test to provide information on the fire performance of 55 gallon metal waste drums used for solid waste disposal at Department Of Energy (DOE) facilities. This program was limited in focus to three different types of 55 gallon drums, one radiant heat source, and one specific fire size. The initial test was a single empty 55 gallon drum exposed to a standard ASTME-119 time temperature curve for over 10 minutes. The full scale tests involved metal drums exposed to a 6{prime} diameter flammable liquid fire for a prescribed period of time. The drums contained simulated dry waste materials of primarily class A combustibles. The test results showed that a conventional 55 gallon drum with a 1in. bung would blow its lid consistently.
Date: July 1, 1993
Creator: Hasegawa, H. K.; Staggs, K. J. & Doughty, S. M.
Object Type: Report
System: The UNT Digital Library
Understanding composite explosive energetics: 4. Reactive flow modeling of aluminum reaction kinetics in PETN and TNT using normalized product equation of state (open access)

Understanding composite explosive energetics: 4. Reactive flow modeling of aluminum reaction kinetics in PETN and TNT using normalized product equation of state

Using Fabry-Perot interferometry techniques, we have determined the early time rate of energy release from detonating PETN and TNT explosives filled with 5 to 20 wt % of either 5 {mu}m or 18 {mu}m spherical aluminum with the detonation products, and calculate the extent of reaction at 1--3 {mu}s after the detonation. All of the metal in PETN formulations filled with 5 wt % and 10 wt % of either 5 {mu}m or 18 {mu}m aluminum reacted within 1.5 {mu}s, resulting in an increase of 18--22% in energy compared to pure PETN. For TNT formulations, between 5 to 10 wt % aluminum reacts completely with the same timeframe. A reactive flow hydrodynamic code model based on the Zeldovich-von Neumann-Doring (ZND) description of the reaction zone and subsequent reaction product expansion (Taylor wave) is used to address the reaction rate of the aluminum particles with detonation product gases. The detonation product JWL equation of state is derived from that of pure PETN using a parametric normalization methodology.
Date: July 1, 1993
Creator: Tao, W. C.; Tarver, C. M.; Kury, J. W.; Lee, C. G. & Ornellas, D. L.
Object Type: Article
System: The UNT Digital Library
Upgrade energy building standards and develop rating system for existing low-income housing (open access)

Upgrade energy building standards and develop rating system for existing low-income housing

The city of Memphis Division of Housing and Community Development (HCD) receives grant funding each year from the U.S. Department of Housing and Urban Development (HUD) to provide local housing assistance to low-income residents. Through the years, HCD has found that many of the program recipients have had difficulty in managing their households, particularly in meeting monthly financial obligations. One of the major operating costs to low-income households is the utility bill. Furthermore, HCD`s experience has revealed that many low-income residents are simply unaware of ways to reduce their utility bill. Most of the HCD funds are distributed to low-income persons as grants or no/low interest loans for the construction or rehabilitation of single-family dwellings. With these funds, HCD builds 80 to 100 new houses and renovates about 500 homes each year. Houses constructed or renovated by HCD must meet HUD`s minimum energy efficiency standards. While these minimum standards are more than adequate to meet local building codes, they are not as aggressive as the energy efficiency standards being promoted by the national utility organizations and the home building industry. Memphis Light, Gas and Water (MLGW), a city-owned utility, has developed an award-winning program named Comfort Plus which promotes energy …
Date: July 1, 1993
Creator: Muller, D. & Norville, C.
Object Type: Report
System: The UNT Digital Library