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Field Study of Disposed Solid Wastes From Advanced Coal Processes Progress Report
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Chemical and thermal stability of refrigerant-lubricant mixture with metal
This report presents completed sealed tube stability test results for the R-123/mineral oil mixture and preliminary results for seven of the eighteen contracted refrigerant-lubricant mixtures. The R-123 mixture was tested at 105, 150, and 175{degrees}C. The results obtained indicate that prolonged exposure to temperatures of about 150{degree}C and higher will lead to rapid chemical deterioration of the R-123/mineral oil system. Chlorotrifluoroethane (R-133a) and trifluoroethane (R-143a) have been identified as decomposition products of R-123. Testing at 150 and 175{degrees}C have been completed for the HCFC refrigerants R-22, R-124, and R-142b with either mineral oil or alkylbenzene lubricants. These mixtures were very stable at the indicated temperatures. Testing at a higher temperature level will be necessary to define their upper temperature limits. Similarily, partial test results are available for HFC refrigerants R-32, R-125, R-134a (two esters), and R-143a with pentaerythritol ester lubricants at the 150 and 175{degrees}C temperature levels. Again, all five mixtures were found to be extremely stable at the test temperatures and additional testing will be needed to establish their upper temperature limits.
Date:
March 31, 1992
Creator:
Huttenlocher, D.F. (Spauschus Associates, Inc., Atlanta, GA (United States))
Object Type:
Report
System:
The UNT Digital Library
Resonance Raman and photophysical studies of transition metal complexes in solution and entrapped in zeolites
We have obtained convincing evidence for localization of the optical electron on a single-ring fragment of a chelated bipyridine-like'' ligand (ie., pyridylpyrazine or 4-Methyl-bipyridine). In addition we have completed studies of Ru(bipyrazine){sub 3}{sup 2+} in aqueous sulfuric acid (0--98% by weight) and find clear evidence for sequential addition of six-protons to the six peripheral nitrogen atoms. Studies of zeolite-entrapped complexes are continuing and a series of homo- and heteroleptic complexes have been prepared and characterized. Finally, the synthesis of zeolite-entrapped metallophthalocyanines has now been developed and the copper and cobalt analogues synthesized. The characterization of these materials is now in progress.
Date:
March 31, 1992
Creator:
Kincaid, J.R.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0154.0245]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Ralph Ellison library manager Denyvetta Davis along with Baba Ayubu Kamau and Nana Mawusi Modupe, from left, prepare for a ceremony to celebrate Kwanzaa, an African-American holiday designed to reaffirm cultural self determination."
Date:
December 31, 1992
Creator:
Sisney, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0149.0556]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Jim Crouch is framed by the sign that has been a familiar logo along Rout 66 for decades."
Date:
July 31, 1992
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0140.0197]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "OU quarterback Steve Collins was throwing against Kansas State, but the Sooners are making adjustments to suit his running ability."
Date:
October 31, 1992
Creator:
Gooch, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
On the massless gap'' adjustment of detected energy for passive material in front of a calorimeter
I have designed a correction scheme for energy losses in passive material in front of a calorimeter based on the massless gap'' idea. I use a flexible geometry model of a calorimeter design for SDC outside of a solenoidal coil made of aluminium cylinders of adjustable thickness. The signal from the first radiation length of active calorimetry is scaled dependent on the incoming and observed energies of the shower. A reasonable recovery of the resolution of an unobstructed calorimeter is achieved using correction factors that depend only upon the total thickness of passive material. Thus a useful correction may be built into the hardware by increasing the amount of scintillator in the first radiation length of the active calorimeter. The distribution of correction factors determined event-by-event indicate that an additional dependence on the observed signal in the massless gap and total incident energy is clearly present.
Date:
January 31, 1992
Creator:
Trost, H.J.
Object Type:
Report
System:
The UNT Digital Library
The single electron chemistry of coals
Depolymerization of coals at low temperatures may offer advantages over thermal bond cleavage. Because bond cleavage energies of radical cations are lower than the corresponding homolytic bond cleavage energies of the same bond, generation of radical cations in coal may make possible depolymerization at lower temperatures. We seek to investigate the above possibility using single molecules containing functional groups common in coals. Since the generation of a radical cation requires the removal of an electron from a neutral molecule, a primary focus of the study will be finding oxidants that will remove an electron from compounds with structural similarity to those typically found in coals. The study must also be concerned with the decomposition of radical cations and the products formed as a result of the decomposition.
Date:
January 31, 1992
Creator:
Larsen, J. W. & Eskay, T. P.
Object Type:
Report
System:
The UNT Digital Library
LAPACK users' guide: Release 1. 0
LAPACK is a transportable library of Fortran 77 subroutines for solving the most common problems in numerical linear algebra: systems of linear equations, linear least squares problems, eigenvalue problems and singular value problems. LAPACK is designed to supersede LINPACK and EISPACK, principally by restructuring the software to achieve much greater efficiency on vector processors, high-performance superscalar'' workstations, and shared-memory multi-processors. LAPACK also adds extra functionality, uses some new or improved algorithms, and integrates the two sets of algorithms into a unified package. The LAPACK Users' Guide gives an informal introduction to the design of the algorithms and software, summarizes the contents of the package, describes conventions used in the software and documentation, and includes complete specifications for calling the routines. This edition of the Users' guide describes Release 1.0 of LAPACK.
Date:
January 31, 1992
Creator:
Anderson, E.; Bai, Z.; Bischof, C.; Demmel, J.; Dongarra, J.; Du Croz, J. et al.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0315B.0107]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Is artistic talent a prerequisite for a decorative painter? No, said Billie Joe Johnston."
Date:
August 31, 1992
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0304B.0233]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "OU's Darrius Johnson looks for room to run after an interception during Saturday's 16-14 sooner win in Norman."
Date:
October 31, 1992
Creator:
Gooch, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0261C.0284]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Pamela Sue Honohan, 29, was arrested on a first-degree murder complaint and was being held Friday in the Bethany jail, police spokesman John Quinton said."
Date:
October 31, 1992
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0249.0720]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Stillwater - Oklahoma State free safety Scott Harmon led the Big Eight Conference with six interceptions last year, and he also broke up seven other pass attempts."
Date:
August 31, 1992
Creator:
Hellstern, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0262B.0723]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Benevolent (3) fights for the lead with Rather Rapid, center, and Oaken Launch (6) in Friday's first race at Remington Park."
Date:
January 31, 1992
Creator:
Sisney, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0249.0696]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Mike Harmon, right, confers with defense attorney Fred Shaeffer."
Date:
August 31, 1992
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0314B.0010]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Workers form various pick up boxes of food Friday that was donated ot their organizations by Feed the Children."
Date:
January 31, 1992
Creator:
Southerland, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0172.0177]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Edmond, Churches, First Baptist Church"
Date:
March 31, 1992
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0172.0176]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Edmond, Churches, First Baptist Church"
Date:
March 31, 1992
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0172.0180]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Edmond, Churches, First Baptist Church"
Date:
March 31, 1992
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0172.0181]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Angle iron is laid out for construction at the planned location of the First Baptist Church's new sanctuary at E 33rd and Bryant in Edmond."
Date:
March 31, 1992
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0172.0179]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Edmond, Churches, First Baptist Church"
Date:
March 31, 1992
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0172.0178]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Edmond, Churches, First Baptist Church"
Date:
March 31, 1992
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0074.0062]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "The Oklahoma basketball team savors the spoils of victory by posing with their All-College championship trophy Wednesday night."
Date:
December 31, 1992
Creator:
Gooch, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0118.0612]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "The addition of Steve Burtt has Oklahoma City ready to make a move in the CBA's Western Division."
Date:
December 31, 1992
Creator:
Hoke, Doug
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0108.0588]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Jo Ann shows some of the brochures from the convention and visitors bureau in Edmond"
Date:
March 31, 1992
Creator:
Gooch, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History