Determination of the effect of various hydrogen bonding functionalities on the viscosity of coal liquids (open access)

Determination of the effect of various hydrogen bonding functionalities on the viscosity of coal liquids

The objective of this program was to differentiate and quantitate the effects of various hydrogen bonding functionalities on the viscosity of coal liquids. Emphasis was on separating and measuring the individual effect of phenolic (acidic) and aromatic amino (basic) hydrogen bonding functionalities on the viscosity of coal liquids. The elimination of both acidic and basic hydrogen bondings was attempted by using trifluoroacetyl chloride and butyric acid in derivatization; and the elimination of basic hydrogen bondings was attempted by using only trifluoroacetyl chloride in derivatization. The selectivity toward hydrogen bondings' elimination offered by these derivatizations was proven to be feasible from a study of model compounds' derivatizations. Nine narrow-boiling-range coal distillates were obtained from distilling the coal liquids of Wilsonville Run 245 and were used as coal liquid samples. 6 figs.
Date: November 15, 1990
Creator: Wei, Jing-Fong.
Object Type: Report
System: The UNT Digital Library
In-beam studies of high-spin states of actinide nuclei (open access)

In-beam studies of high-spin states of actinide nuclei

High-spin states in the actinides have been studied using Coulomb- excitation, inelastic excitation reactions, and one-neutron transfer reactions. Experimental data are presented for states in {sup 232}U, {sup 233}U, {sup 234}U, {sup 235}U, {sup 238}Pu and {sup 239}Pu from a variety of reactions. Energy levels, moments-of-inertia, aligned angular momentum, Routhians, gamma-ray intensities, and cross-sections are presented for most cases. Additional spectroscopic information (magnetic moments, M{sub 1}/E{sub 2} mixing ratios, and g-factors) is presented for {sup 233}U. One- and two-neutron transfer reaction mechanisms and the possibility of band crossings (backbending) are discussed. A discussion of odd-A band fitting and Cranking calculations is presented to aid in the interpretation of rotational energy levels and alignment. In addition, several theoretical calculations of rotational populations for inelastic excitation and neutron transfer are compared to the data. Intratheory comparisons between the Sudden Approximation, Semi-Classical, and Alder-Winther-DeBoer methods are made. In connection with the theory development, the possible signature for the nuclear SQUID effect is discussed. 98 refs., 61 figs., 21 tabs.
Date: November 15, 1990
Creator: Stoyer, M.A. (Lawrence Berkeley Lab., CA (USA). Nuclear Science Div. California Univ., Berkeley, CA (USA). Dept. of Chemistry)
Object Type: Report
System: The UNT Digital Library
Deconvolution using a neural network (open access)

Deconvolution using a neural network

Viewing one dimensional deconvolution as a matrix inversion problem, we compare a neural network backpropagation matrix inverse with LMS, and pseudo-inverse. This is a largely an exercise in understanding how our neural network code works. 1 ref.
Date: November 15, 1990
Creator: Lehman, S.K.
Object Type: Report
System: The UNT Digital Library
Hadroproduction of charm at Fermilab E769 (open access)

Hadroproduction of charm at Fermilab E769

Experiment E769 at Fermilab obtained charm hadroproduction data during the 1987-88 Fixed Target running period with a 250 GeV hadron beam incident on thin target foils of Be, Al, Cu, and W. From an analysis of 25% of the recorded 400M trigger sample we have explored the Feynman x, p{sub t}{sup 2} and the atomic number dependence of charm quark production using samples of D{sup +} and D{sup 0} mesons. 7 refs., 4 figs.
Date: November 15, 1990
Creator: Alves, G. A.; Anjos, J. C.; de Mello Neto, J. R. T.; de Miranda, J. M.; da Motta, H.; dos Reis, A. C. et al.
Object Type: Article
System: The UNT Digital Library
Improving line detector by wedge filtering in the Fourier power spectrum domain (open access)

Improving line detector by wedge filtering in the Fourier power spectrum domain

This paper reports on the work being performed for the ship wake detection effort. We show that improvements in the detectability of line features in noisy images, using the correlation-spectral line detector, can be achieved through the judicious choice of a wedge filter in the Fourier power spectrum (FPS) domain. 3 refs., 7 figs.
Date: November 15, 1990
Creator: Lehman, S.K.
Object Type: Report
System: The UNT Digital Library
Strategic Petroleum Reserve quarterly report, (July 1, 1990--September 30, 1990) (open access)

Strategic Petroleum Reserve quarterly report, (July 1, 1990--September 30, 1990)

This November 15, 1990, Strategic Petroleum Reserve Quarterly Report describes activities related to the site development, oil acquisition, budget and cost of the Reserve during the period July 1, 1990, through September 30, 1990. 4 tabs.
Date: November 15, 1990
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Texas Attorney General Opinion: JM-1248 (open access)

Texas Attorney General Opinion: JM-1248

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification: Validity of a bid solicitation which does not comply with the publishing requirements of section 262.025(a) of the Texas Local Government Code (RQ-2050)
Date: November 15, 1990
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: LO90-92 (open access)

Texas Attorney General Opinion: LO90-92

Letter opinion issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification; Opinion regarding a rider to article 5, section 8 of the current General Appropriations Act.
Date: November 15, 1990
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Innovative Clean Coal Technology: Demonstration of innovative applications of technology for cost reductions to the CT-121 FGD process. Quarterly report No. 2, July--September 1990 (open access)

Innovative Clean Coal Technology: Demonstration of innovative applications of technology for cost reductions to the CT-121 FGD process. Quarterly report No. 2, July--September 1990

The objective of this project is to demonstrate on a commercial scale several innovative applications of cost-reducing technology to the Chiyoda Thoroughbred-121 (CT-121) process. CT-121 is a second generation flue gas desulfurization (FGD) process which is considered by the Electric Power Research Institute (EPRI) and Southern Company Services (SCS) to be one of the most reliable and lowest cost FGD options for high-sulfur coal-fired utility boiler applications. Demonstrations of the innovative design approaches will further reduce the cost and provide a clear advantage to CT-121 relative to competing technology.
Date: November 15, 1990
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Innovative Clean Coal Technology: Demonstration of innovative applications of technology for cost reductions to the CT-121 FGD process (open access)

Innovative Clean Coal Technology: Demonstration of innovative applications of technology for cost reductions to the CT-121 FGD process

The objective of this project is to demonstrate on a commercial scale several innovative applications of cost-reducing technology to the Chiyoda Thoroughbred-121 (CT-121) process. CT-121 is a second generation flue gas desulfurization (FGD) process which is considered by the Electric Power Research Institute (EPRI) and Southern Company Services (SCS) to be one of the most reliable and lowest cost FGD options for high-sulfur coal-fired utility boiler applications. Demonstrations of the innovative design approaches will further reduce the cost and provide a clear advantage to CT-121 relative to competing technology.
Date: November 15, 1990
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Electron-atom collision studies using optically state selected beams. Progress report, May 15, 1988--May 14, 1991 (open access)

Electron-atom collision studies using optically state selected beams. Progress report, May 15, 1988--May 14, 1991

This report discusses progress made during the current contract period on the authors research program to study collisions between spin-polarized electrons and spin-polarized atoms. The objective of this work is to stimulate a deeper theoretical understanding of the electron-atom interaction by providing the most complete possible experimental characterization of the colliding system. Through the use of optical state preparation techniques to prepare both the incident electrons and atom in well-defined initial states, the authors are able to extract substantially more information about the scattering process than is available from more conventional measurements of differential scattering cross sections. Their primary interest is to study in detail the role played by spin in electron-atom collisions at low to intermediate energies. The additional information provided by these spin-dependent measurements greatly enhances understanding of both exchange and the spin-orbit interaction in the scattering process. During this three-year period they have made substantial progress in measurements of both elastic and superelastic scattering of spin-polarized electrons from optically pumped sodium. The elastic scattering measurements in particular were made possible by several important improvements to the experimental apparatus.
Date: November 15, 1990
Creator: Celotta, R. J. & Kelley, M. H.
Object Type: Report
System: The UNT Digital Library
Winter Fuels Report: Week Ending November 9, 1990 (open access)

Winter Fuels Report: Week Ending November 9, 1990

The Winter Fuels Report is intended to provide concise, timely information to the industry, the press, policymakers, consumers, analysts, and state and local governments on the following topics: distillate fuel oil net production, imports and stocks for all PADD's and product supplied on a US level; propane net production, imports and stocks for Petroleum Administration for Defense Districts (PADD) I, II, and III; natural gas supply and disposition and underground storage for the United States and consumption for all PADD's; residential and wholesale pricing data for propane and heating oil for those states participating in the joint Energy Information Administration (EIA)/State Heating Oil and Propane Program; crude oil and petroleum price comparisons for the United States and selected cities; and US total heating degree-days by city. 27 figs., 12 tabs.
Date: November 15, 1990
Creator: unknown
Object Type: Report
System: The UNT Digital Library