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[Letter from Kristen Marstaller to Bill McCarter, January 17, 1996]
Photocopy of a letter from Kristen Marstaller, Art / Social Studies Coordinator for the Austin Independent School District to Bill McCarter, co-director of North Texas Institute for Educators on the Visual Arts. To thank McCarter on the behalf of Austin teachers and the presentation he made at the Art Share meeting. Marstaller writes that many of the misunderstandings and misconceptions were cleared up and the faculty was impressed with his knowledge and willingness to assist the Austin District. Martaller will reach out to McCarter at a later date to further discuss the program and ask for suggestions and advice as they proceeded with implementation of DBAE.
Date:
January 17, 1996
Creator:
Marstaller, Kristen
Object Type:
Letter
System:
The UNT Digital Library
Thermally Induced Structural Changes in Coal Combustion
The effect of particle shape on char burnout is investigated in the limit of shrinking core combustion. As a first step, the particle temperature is assumed to proceed in the shrinking core regime and under conditions of negligible Stefan flow. The problem then reduces to calculating the oxygen concentration field around a non-spherical particle with the oxidation reaction taking place on the external surface. This problem has been addressed by an analytical technique and a numerical technique. An analytical technique known as domain perturbation'' was used to examine the change due to reaction in the shape of a slightly nonspherical, but axisymmetric, particle. It was found that the aspect ratio always increases with conversion, i.e., the particle becomes less spherical. A numerical technique, based on the boundary integral'' method was developed to handle the case of an axisymmetric particle with otherwise arbitrary shape. Numerical results are presented which again show the aspect ratio to increase with conversion. 8 refs.
Date:
January 17, 1990
Creator:
Gavalas, G. R. & Flagan, R. C.
Object Type:
Report
System:
The UNT Digital Library
[News Clip: TX families]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
January 17, 1994, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
Control of pyrite surface chemistry in physical coal cleaning
To better understand the flotation behavior of coal pyrite, studies have been initiated to characterize the floatability of coal pyrite and mineral pyrite. The hydrophobicity of coal material pyrite was examined over a range of pH and oxidation times. The results indicate that surface oxidation plays an important role in coal and mineral pyrite hydrophobicity. The hydrophobicity of mineral pyrite decreases with increasing oxidation time (20 min. to 5 hr.) and increasing pH (pH 4.6 to 9.2), with maximum depression occurring at pH 9.2. However, coal pyrite exhibited low floatability, even at the lowest oxidation time, over the entire pH range. X-ray photoelectron spectroscopy (XPS) results suggest the growth of an oxidized iron layer as being responsible for the deterioration in floatability, while a sulfur-containing species present on the sample surfaces may promote floatability. Preliminary studies of the effect of frother indicate an enhancement in the floatability of both coal and mineral pyrite over the entire pH range.
Date:
January 17, 1990
Creator:
Luttrell, G. H.; Yoon, R. H.; Zachwieja, J. & Lagno, M.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0148.0062]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Tim Cravens, 16, recently achieved the rank of Eagle Scout from his Troop 17 sponsored by St. Andrews Catholic Church."
Date:
January 17, 1994
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0151.0183]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Clark Curry says the American Opinion Bookstore in Bethany now will include more books about the "New World Order," as the John Birch Society changes."
Date:
January 17, 1992
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0172.0310]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Dwight Maker Edmond Fire Chief, Kitchen."
Date:
January 17, 1995
Creator:
Southerland, Paul B.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0142.0493]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Home buyers want to know efficiency ratings of air conditioners and furnaces," said builder Steve Cook."
Date:
January 17, 1990
Creator:
Southerland, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0148.0197]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "A U.S. Air Force jet fighter crash-landed Wednesday at the Seminole Municipal Airport, but both occupants walked away from the wrecked plane after it scooted about 400 yards past the end of the runway and hurdled a fence."
Date:
January 17, 1990
Creator:
Sisney, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0310B.0054]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "More than 50 men seek shelter from the coldest night of the ear Monday at the Jesus House food room, 1335 W Sheridan."
Date:
January 17, 1994
Creator:
Southerland, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0310B.0051]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
January 17, 1994
Creator:
Southerland, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0257.0248]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Susan Hermes gives Leon Royer a flower."
Date:
January 17, 1990
Creator:
Gooch, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0310B.0052]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
January 17, 1994
Creator:
Southerland, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0248.0475]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Bryan Kenneth Harding, 15, achieved the rank of Eagle Scout from his troop 599 sponsored by Episcopal Church of the Resurrection recently."
Date:
January 17, 1994
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0260.0280]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
January 17, 1992
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0260.0278]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
January 17, 1992
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0261.0718]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "OKC Waterfront Consultant spokesman Randy Hill explains the Lake Hefner Master Recreational Olan."
Date:
January 17, 1991
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0260.0380]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Contract workers for the Oklahoma Turnpike Authority finish some dirt work, as support beams for traffic ramps are installed at Lake Hefner Parkway-John Kilpatrick Turnpike interchange at Portland Avenue and Memorial Road in Oklahoma City."
Date:
January 17, 1992
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0151.0185]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
January 17, 1992
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0172.0309]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Edmond's Fire Station No. 4 will open with four to five people on duty, but was constructed to house up to nine people."
Date:
January 17, 1995
Creator:
Southerland, Paul B.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0151.0527]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Herb and Marlene Mee, left, and Anita Dahlgren, sample of the food at the patrons party.."
Date:
January 17, 1991
Creator:
Sisney, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0172.0308]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Edmond Fire Chief Dwight Maker looks at diesel exhaust removal systems at fire Station No. 4, top photo."
Date:
January 17, 1995
Creator:
Southerland, Paul B.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0172.0307]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Edmond Fire Station No. 4, between SE 15 and SE 33 on the westside access road of interstate 35, is the city's first new station since 1983."
Date:
January 17, 1995
Creator:
Southerland, Paul B.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0250.0784]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Publicity concerning three people who are thought to have contracted AIDS from their dentist has prompted in Oklahoma City dentist to call for local, voluntary, anonymous AIDS testing of all dentist and medical practitioners."
Date:
January 17, 1991
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History