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Results:
1 - 24 of
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NQR-NMR studies of higher alcohol synthesis Cu-Co catalysts
Methods of preparation of the copper, cobalt, and titanium catalysts were outlined. The catalyst samples were then analyzed through nuclear magnetic and nuclear quadrupole resonance.
Date:
February 1, 1990
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
A study of steady-state steam-water counterflow in porous media
Vapor-liquid counterflow in porous media arises in processes such as heat pipes, oil recovery and geothermal systems. Previous studies analysed these phenomena in separate contexts. This paper presents a unified description from which previous models result as limiting cases. The analysis includes capillarity, heat conduction, and Kelvin effects. The importance of each term to various processes is examined. Significantly, it is found that the critical heat flux is not constant but increases with decreasing permeability. A threshold permeability is identified below which steady states may not exist. Analogous conclusions are reached regarding liquid-dominated geothermal systems. 24 refs., 15 figs.
Date:
February 1, 1990
Creator:
Satik, C.; Parlar, M. & Yortsos, Y.C.
Object Type:
Report
System:
The UNT Digital Library
Control of alpha particle transport by spatially inhomogeneous ion cyclotron resonance heating
Control of the radial alpha particle transport by using Ion Cyclotron Range of Frequency waves is investigated in a large-aspect-ratio tokamak geometry. It is shown that spatially inhomogeneous ICRF-wave energy with properly selected frequencies and wave numbers can induce fast convective transport of alpha particles at the speed of order {upsilon}{sub alpha} {approximately} (P{sub RF}/n{sub {alpha}}{epsilon}{sub 0}) {rho}{sub p}, where P{sub RF} is the ICRF-wave power density, n{sub {alpha}} is the alpha density, {epsilon}{sub 0} is the alpha birth energy, and {rho}{sub p} is the poloidal gyroradius of alpha particles at the birth energy. Application to ITER plasmas is studied and possible antenna designs to control alpha particle flux are discussed. 8 refs., 3 figs.
Date:
February 1, 1990
Creator:
Chang, C. S.; Imre, K.; Weitzner, H. (New York Univ., NY (USA). Courant Inst. of Mathematical Sciences) & Colestock, P. (Princeton Univ., NJ (USA). Plasma Physics Lab.)
Object Type:
Report
System:
The UNT Digital Library
The thermodynamic properties of 2-methylaniline and trans-(R,S)- decahydroquinoline
Measurements leading to the calculation of the ideal-gas thermodynamic properties for 2-methylaniline and trans-(R,S)-decahydroquinoline are reported. Experimental methods included combustion calorimetry, adiabatic heat-capacity calorimetry, comparative ebulliometry, inclined-piston gauge manometry, and differential-scanning calorimetry (dsc). Entropies, enthalpies, and Gibbs energies of formation were derived for the ideal gas at selected temperatures for both compounds. Critical properties were determined for 2-methylaniline with the dsc. Measured combustion enthalpies, vapor pressures, critical properties, and ideal-gas entropies were compared with estimated and experimental literature values. 59 refs., 7 figs., 15 tabs.
Date:
February 1, 1990
Creator:
Steele, W. V.; Chirico, R. D.; Nguyen, A. & Knipmeyer, S. E.
Object Type:
Report
System:
The UNT Digital Library
Control of energetic ion confinement by ion cyclotron range of frequency waves
It is shown that ICRF waves can induce fast convective radial transport of energetic ions in a tokamak geometry without affecting the background ion transport. Spatially inhomogeneous ICRF waves with directional parallel wave vectors are needed; otherwise, a net parallel flow of the energetic ions has to be present. 8 refs.
Date:
February 1, 1990
Creator:
Chang, C.S. (New York Univ., NY (USA). Courant Inst. of Mathematical Sciences)
Object Type:
Report
System:
The UNT Digital Library
Simulations of plasma performance in a beam-driven tokamak fusion reactor with Q approx 2-3
Supershot profiles were used to simulate plasmas in a neutral-beam driven tokamak reactor designed to achieve fusion energy production with Q {approx} 2-3. Profiles from a TFTR supershot were scaled to larger radii, density, and electron temperature. The TRANSP code was used to calculate performance of these plasmas. Examples are given of steady-state plasmas with large beam-driven bootstrap currents. The required energy transport rate is comparable to that in TFTR, but the particle transport rate must be less. The PEST code indicates that the plasmas would be MHD stable if the central q{sub {Psi}} can be controlled. 8 refs., 13 figs., 4 tabs.
Date:
February 1, 1990
Creator:
Budny, R.; Jassby, D. L.; Manickam, J.; McCune, D. & Wieland, R.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0118.0667]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Busch, Gina / Mother of murder victim (Katherine Anne Busch)"
Date:
February 22, 1990
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0093.0223]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Veteran pilot Jack Blanchard shows some of the citations he earned during his long flying career."
Date:
February 23, 1990
Creator:
Wilson, George R.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0118.0671]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Kenny Busch and Gina Busch, the parents of Katherine Ann Busch, mourn Friday at the graveside of their daughter."
Date:
February 23, 1990
Creator:
Hellstern, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Faculty Recital: 1990-02-06 - Carter Enyeart, cello
Access:
Use of this item is restricted to the UNT Community
Faculty recital performed at an unknown location.
Date:
February 6, 1990
Creator:
Enyeart, Carter
Object Type:
Sound
System:
The UNT Digital Library
Guest Artist Recital: 1990-02-23 - Alexei Sultanov, piano
Access:
Use of this item is restricted to the UNT Community
Guest artist recital performed at the UNT College of Music Concert Hall.
Date:
February 23, 1990
Creator:
Sultanov, Alexei
Object Type:
Sound
System:
The UNT Digital Library
Activities and Operations of the Advanced Computing Research Facility : January 1989-January 1990
This report reviews the activities and operations of the Advanced Computing Research Facility (ACRF) for the period January 1, 1989, through January 31, 1990. The ACRF is operated by the Mathematics and Computer Science Division at Argonne National Laboratory. The facility's principal objective is to foster research in parallel computing. Toward this objective, the ACRF continues to operate experimental advanced computers and to sponsor new technology transfer efforts and new research projects.
Date:
February 1990
Creator:
Pieper, Gail W.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0117.0197]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Jeromy Burnitz, left, wields a big bat for the press Monday, while Dennis Burbank, right, stretches his gum before worming up."
Date:
February 12, 1990
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Southwest Retort, Volume 44, Number 2, February 1990
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
February 1990
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
[Photograph 2012.201.B0137.0609]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Suzanne Keller, Ava Wheaton and Jeremee Cloud, from left, visit."
Date:
February 20, 1990
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0136.0004]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "The barn at the Clark Ranch was just being built in about 1895, photo above."
Date:
February 13, 1990
Creator:
McDaniel, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0152.0865]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
February 8, 1990
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0152.0252]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Residents say the cracked Lake Francis Dam is only part of a problem that has resulted from prolonged neglect of the lake."
Date:
February 28, 1990
Creator:
Seldon, Dave
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0152.0507]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Kaleidoscope Dancers will perform tonight at Central State University."
Date:
February 26, 1990
Creator:
McDaniel, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0172.0332]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "An Edmond firefighter, right, participates in a training exercise at 305 N Broadway Friday morning."
Date:
February 9, 1990
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0172.0093]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Construction of a Kinko's printing store is moving toward a March 7th completion in Edmond."
Date:
February 16, 1990
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0150.0845]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
February 21, 1990
Creator:
Sisney, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0172.0081]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Closed" was written in capital letters across a yellow sheet of paper hung on the door of Edmond Muffler & Audio, 3900 S Broadway in Edmond."
Date:
February 21, 1990
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0155.0162]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "#22 NATHAN BUNIN & #32 JAMAL COLEMAN .."
Date:
February 18, 1990
Creator:
Hoke, Doug
Object Type:
Photograph
System:
The Gateway to Oklahoma History