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Pressure Induced Bonding Changes in Carbon Dioxide: Six Fold Coordinated CO2
In this LDRD, we examined in detail the pressure-induced bonding and local coordination changes leading to the molecular {yields} associated {yields} extended-solid transitions in carbon dioxide (CO{sub 2}). We studied the progressive delocalization of electrons from the C=O molecular double bond at high pressures and temperatures, and determined the phase stability and physical properties of a new extended-solid CO{sub 2} phase (VI). We find that the new CO{sub 2} phase VI is based on a network of six-fold coordinated (octahedral) CO{sub 6} structures similar to the ultra-hard SiO{sub 2} phase stishovite.
Date:
February 8, 2008
Creator:
Iota, V.; Jenei, Z.; Klepeis, J. P.; Evans, W. J. & Yoo, C.
Object Type:
Report
System:
The UNT Digital Library
Hydrodynamic, Atomic Kinetic, and Monte Carlo Radiation Transfer Models of the X-ray Spectra of Compact Binaries
We describe the results of an effort, funded by the Lawrence Livermore National Laboratory Directed Research and Development Program, to model, using FLASH time-dependent adaptive-mesh hydrodynamic simulations, XSTAR photoionization calculations, HULLAC atomic data, and Monte Carlo radiation transport, the radiatively-driven photoionized wind and accretion flow of high-mass X-ray binaries (HMXBs). In this final report, we describe the purpose, approach, and technical accomplishments of this effort, including maps of the density, temperature, velocity, ionization parameter, and emissivity distributions of the X-ray emission lines of the well-studied HMXB Vela X-1.
Date:
February 8, 2008
Creator:
Mauche, C W; Liedahl, D A; Akiyama, S & Plewa, T
Object Type:
Report
System:
The UNT Digital Library
Car - Coupling
Patent for a new and useful improvements in car-couplings. This design "relates to car-couplers of the pivoted-hook type" (line 11 -12).
Date:
February 8, 1898
Creator:
Chance, Ransom M.
Object Type:
Patent
System:
The Portal to Texas History
Carbureter
Patent for a carburetor to be used on internal combustion engines. Illustrations included.
Date:
February 8, 1910
Creator:
Kingsbury, William P.
Object Type:
Patent
System:
The Portal to Texas History
Cotton Oil Mill Seed Huller
Patent for a cotton oil mill seed huller. This invention is designed to prevent the breaking or drilling of knives by foreign matter. Illustrations included.
Date:
February 8, 1910
Creator:
Kappler, John G. & Gaines, John
Object Type:
Patent
System:
The Portal to Texas History
Chopping Machine
Patent for a chopping machine. Illustrations included.
Date:
February 8, 1910
Creator:
Kilman, John J. & McCown, J. R.
Object Type:
Patent
System:
The Portal to Texas History
Apparatus for Electrostatic-Magnetic Separation
Patent for an electrostatic-magnetic separator for separating particles in a mass.
Date:
February 8, 1910
Creator:
Sutton, Henry M.; Steele, Walter L. & Steele, Edwin G.
Object Type:
Patent
System:
The Portal to Texas History
Baling-Press
Patent for a baling press which uses less power to press hay the same tightness as current baling presses.
Date:
February 8, 1910
Creator:
Smith, Ernest D.
Object Type:
Patent
System:
The Portal to Texas History
The Wild Horse Controversy
This report addresses the Wild Horse Controversy.
Date:
February 8, 1971
Creator:
Shaw, Elmer W.
Object Type:
Report
System:
The UNT Digital Library
Churn.
Patent for a churn that is easy to use and efficient.
Date:
February 8, 1910
Creator:
Huggins, Thompson A.
Object Type:
Patent
System:
The Portal to Texas History
NIS power range setpoints for Phase-B operation
NIS power range setpoints are given at which the bistable inputs should be set to guarantee compliance with Phase-B Technical Specification Requirements. (JDB)
Date:
February 8, 1978
Creator:
Rose, J. A.
Object Type:
Report
System:
The UNT Digital Library
Multivariable current control for electrically and magnetically coupled superconducting magnets
Superconducting magnet systems under construction and projected for the future contain magnets that are magnetically coupled and electrically connected with shared power supplies. A change in one power supply voltage affects all of the magnet currents. A current controller for these systems must be designed as a multivariable system. The paper describes a method, based on decoupling control, for the rational design of these systems. Dynamic decoupling is achieved by cross-feedback of the measured currents. A network of gains at the input decouples the system statically and eliminates the steady-state error. Errors are then due to component variations. The method has been applied to the magnet system of the MFTF-B, at the Lawrence Livermore National Laboratory.
Date:
February 8, 1985
Creator:
Owen, E. W. & Shimer, D. W.
Object Type:
Article
System:
The UNT Digital Library
Improved resonance reaction rate calculation for lattice physics subsystem
The resonance capture calculations of the HAMMER System and HAMBUR System are derived from a consistent statement of the integral slowing down equation and definitions of the resonance integral. The assumptions made in these treatments are explicitly stated, and and an attempt is made to estimate the possible error in the resonance integral arising from these assumptions. This analysis is made to pin-point those parts of the calculation that can be improved and updated. Based on the analysis of existing calculations a method of calculation is derived which avoids most of the problems encountered in HAMMER and HAMBUR. The chief improvements that result are as follows: Careful attention is paid to calculation of the resonance flux as most errors in existing calculations result from consistently overpredicting fluxes in all regions of a lattice cell. The calculation can be modified to produce as crude or detailed a resonance calculation, at the expense of computer time, as required by the user. Resonances that overlap group boundaries contribute the correct contribution to each group's reaction rates. Overlap between resonances of different isotopes is correctly accounted for. Up-to-date resonance formalisms are used including the Adler-Adler multi-level formulations. Provision is made to easily add new …
Date:
February 8, 1974
Creator:
Finch, D.R.
Object Type:
Report
System:
The UNT Digital Library
Nuclear Spectroscopic Studies
The Nuclear Physics group at the University of Tennessee, Knoxville is involved in several aspects of heavy-ion physics including both nuclear structure and reaction mechanisms. While our main emphasis is on experimental problems involving heavy-ion accelerators, we have maintained a strong collaboration with several theorists in order to best pursue the physics of our measurements. During the last year we have led several experiments at the Holifield Heavy Ion Research Facility and participated in others at Argonne National Laboratory. Also, we continue to be very active in the collaboration to study ultra-relativistic heavy ion physics utilizing the SPS accelerator at CERN in Geneva, Switzerland and in a RHIC detector R D project. Our experimental work is in four broad areas: (1) the structure of nuclei at high angular momentum, (2) heavy-ion induced transfer reactions, (3) the structure of nuclei far from stability, and (4) ultra-relativistic heavy-ion physics. The results of studies in these particular areas will be described in this document in sections IIA, IIB, IIC, and IID, respectively. Areas (1), (3), and (4) concentrate on the structure of nuclear matter in extreme conditions of rotational motion, imbalance of neutrons and protons, or very high temperature and density. Area (2) …
Date:
February 8, 1993
Creator:
Bingham, C. R.; Guidry, M. W.; Riedinger, L. L. & Sorensen, S. P.
Object Type:
Report
System:
The UNT Digital Library
Separations areas effluent treatment: The preparation of a simulated effluent for system development and testing
A fundamental parameter in the design of the Effluent Treatment Facility (ETF), the effluent composition, has recently been investigated by analyzing samples from both separations areas. As a result of this characterization program, we can now project the composition of the ETF feed stream. The anticipated feed composition is presented here for the purpose of making system projections; and a formula is provided for a simulant to use in testing evaporation, filtration, and reverse osmosis (RO) equipment. The components in these waste streams which present potential fouling problems for reverse osmosis are calcium, iron, manganese, barium, and aluminum, in combination with carbonate, silicate, and sulfate. Organics, probably in the form of TBP and kerosene, are also present in the combined effluent, which is otherwise dominated by NaNO{sub 3} and HNO{sub 3}. 3 refs., 3 tabs.
Date:
February 8, 1984
Creator:
Ryan, J.P.
Object Type:
Report
System:
The UNT Digital Library
Observation of excited H/sup 0/ atoms produced by relativistic H/sup /minus// ions in carbon and formvar foils
We have measured the relative yield of several low-lying excited states of neutral hydrogen atoms produced by the passage of 226-MeV and 581-MeV H/sup /minus// ions through thin carbon foils and a tilted formvar foil. The relative yields of H/sup /minus///sub /asterisk//(n = 2,3, 4) were measured for 17 different carbon foils ranging in thickness from 662 /angstrom/ to 5386 /angstrom/ at 581 MeV. The relative yield of H/sup 0//sup /asterisk//(n = 2) was also measured for these carbon foils at 226 MeV. These data exhibit a significant deviation from a simple yield curve indicating that a more complex mechanism than has previously been thought is responsible for producing the excited states. The relative yields of H/sup 0//sup /asterisk//(n = 2,3) were measured for a tilting formvar foil at 226 MeV; unexplained dips appear at incidence angles of /theta/ /approx/ 12/degree/ and /theta/ /approx/ 15/degree/ in the yield of n=2 and n=3 states, respectively. 19 refs., 7 figs., 1 tab.
Date:
February 8, 1989
Creator:
Mohagheghi, A. H.; Bryant, H. C.; Harris, P. G.; Tang, C. Y.; Quick, C. R.; Reeder, R. A. et al.
Object Type:
Article
System:
The UNT Digital Library
LMFBR safety: Interim test report for the characterization of released particle tests conducted at INEL during FY 1979. [Deposition from sodium plume]
Two additional atmospheric sodium release tests were jointly conducted by ESG and ARL at INEL. These tests were conducted under very stable (Pasquill E and G) meteorological conditions where the natural humidity content was high (47 and 96% RH). Sufficient experimental data was obtained on Test 7 to quantitatively qualify the formation of Na/sub 2/CO/sub 3/ in the open atmosphere from primary sodium combustion products. These data show that a maximum concentration of approx. 60% Na/sub 2/CO/sub 3/ is reached with the plume 100 meters from the release point. This concentration increases slightly as the plume is dispersed beyond 2400 meters. The available particle fallout data is consistent with predictions.
Date:
February 8, 1979
Creator:
Johnson, R. P. & Nelson, C. T.
Object Type:
Report
System:
The UNT Digital Library
Plasma effects in high frequency radiative transfer
This paper is intended as a survey of collective plasma processes which can affect the transfer of high frequency radiation in a hot dense plasma. We are rapidly approaching an era when this subject will become important in the laboratory. For pedagogical reasons we have chosen to examine plasma processes by relating them to a particular reference plasma which will consist of fully ionized carbon at a temperature kT=1 KeV (10/sup 70/K) and an electron density N = 3 x 10/sup 23/cm/sup -3/, (which corresponds to a mass density rho = 1 gm/cm/sup 3/ and an ion density N/sub i/ = 5 x 10/sup 22/ cm/sup -3/). We will consider the transport in such a plasma of photons ranging from 1 eV to 1 KeV in energy. Such photons will probably be frequently used as diagnostic probes of hot dense laboratory plasmas.
Date:
February 8, 1981
Creator:
Alonso, C.T.
Object Type:
Report
System:
The UNT Digital Library
Medicare Trigger
This report analyzes the financing of Medicare and its impact on the federal budget. It includes a discussion of the Medicare "trigger," which requires certain actions to be taken should general revenue funding be expected to exceed a certain proportion of total Medicare outlays within a certain number of years.
Date:
February 8, 2018
Creator:
Davis, Patricia A.; Garvey, Todd & Davis, Christopher M.
Object Type:
Report
System:
The UNT Digital Library
Large-city district-heating studies for the Minneapolis--St. Paul area
The Department of Energy, Minnesota Energy Agency, Northern States Power Company, and other local government and private organizations are cooperatively performing an in-depth application study to determine the feasibility of district heating for a large northern-U.S. city. Over 90% of the space- and water-heating requirements are currently supplied by oil and gas. Hence, district heating can potentially replace large quantities of scarce fuels with coal or nuclear resources. In addition, district heating, using a co-generation power plant, substantially increases the fuel-utilization efficiency when compared to an electric-only plant. A Swedish firm, AB Atomenergi, is performing a preliminary economic and technical assessment. The analysis uses current Swedish district-heating technology and experience, and adapts it, where necessary, to U.S. conditions. Preliminary Swedish results indicate favorable economics for a large system, which includes residential areas, when technology innovations such as temperature-resistant plastic piping are used. For conventional-piping technology the economics appear favorable for the commercial areas of the city core. The peak heat load for the Twin Cities is approximately 4200 MW(t). The scenario presented by AB Atomenergi assumes 2250 MW(t) would be supplied by co-generation units, and the remaining 2000 MW(t) would be peaking, heat-only units. The dual-purpose units would be used …
Date:
February 8, 1978
Creator:
Karnitz, M. A. & Rubin, A. M.
Object Type:
Report
System:
The UNT Digital Library
Evaluation of materials exposed to scale-control/nozzle-exhaust experiments at the Salton Sea geothermal field
The erosion, corrosion, and stress corrosion cracking (SCC) of Ti-, Co-, Ni-, and Fe-base alloys specimens that were used in scale-control tests performed at the Salton Sea geothermal field were evaluated. Specimens were exposed to high-velocity, two-phase, 104{sup 0}C nozzle exhaust that was produced by expanding acidified hypersaline, highly mineralized brine to atmospheric pressure through converging-diverging nozzles. The exposed specimens were evaluated using surface profilometer traces, light microscopy, scanning-electron microscopy, and energy dispersive spectroscopy ananlysis. The observed degradation was attributed largely to synergistic effects of erosion, corrosion, and stress. A principal mode of degradation appeared to be the formation and growth of corrosion-assisted erosion cavities; it was proposed that surface repassivation kinetics play a key role in the development of these cavities. It was also suggested that scale deposits on the metal surface may either alter the mode of attack or act as protective barriers. It was concluded that, of the potential turbine-blade materials tested, the Ti-base alloys exhibited the best combination of resistance to erosion, corrosion, and SCC.
Date:
February 8, 1979
Creator:
Goldberg, A. & Kershaw, R. P.
Object Type:
Report
System:
The UNT Digital Library
Metallurgy Division Quarterly Progress Report for Period Ending October 31, 1950
Technical report outlining the rate of production of modified MTR type fuel elements for the Bulk Shielding Facility has proceeded. Includes compatibility test that were started as a guide in the selection of materials suitable for fuel-element fabrication. [From Summary]
Date:
February 8, 1951
Creator:
Frye, J. H.; Miller, E. C. & Bridges, W. H.
Object Type:
Report
System:
The UNT Digital Library
Self-consistent chaos in the beam-plasma instability
The effect of self-consistency on Hamiltonian systems with a large number of degrees-of-freedom is investigated for the beam-plasma instability using the single-wave model of O'Neil, Winfrey, and Malmberg.The single-wave model is reviewed and then rederived within the Hamiltonian context, which leads naturally to canonical action- angle variables. Simulations are performed with a large (10[sup 4]) number of beam particles interacting with the single wave. It is observed that the system relaxes into a time asymptotic periodic state where only a few collective degrees are active; namely, a clump of trapped particles oscillating in a modulated wave, within a uniform chaotic sea with oscillating phase space boundaries. Thus self-consistency is seen to effectively reduce the number of degrees- of-freedom. A simple low degree-of-freedom model is derived that treats the clump as a single macroparticle, interacting with the wave and chaotic sea. The uniform chaotic sea is modeled by a fluid waterbag, where the waterbag boundaries correspond approximately to invariant tori. This low degree-of-freedom model is seen to compare well with the simulation.
Date:
February 8, 1993
Creator:
Tennyson, J.L. (Stanford Linear Accelerator Center, Menlo Park, CA (United States)); Meiss, J.D. (Colorado Univ., Boulder, CO (United States). Applied Mathematics Program) & Morrison, P.J. (Texas Univ., Austin, TX (United States))
Object Type:
Report
System:
The UNT Digital Library
Money Laundering: An Abridged Overview of 18 U.S.C. 1956 and Related Federal Criminal Law
This is an overview of the elements of federal criminal money laundering statutes and the sanctions imposed for their violation.
Date:
February 8, 2012
Creator:
Doyle, Charles
Object Type:
Report
System:
The UNT Digital Library