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[Letter from T.A. Fassburg to Jack Davis, April 10, 1990]
Photocopy of a letter from T.A. Tassburg, Vice President of Public Affairs at Frito-Lay, Inc., to Jack Davis. Tassburg thanks Davis for his invitation to be apart of the North Texas Institute for Educators on the Visual Arts committee, but humbly declines due to conflicting schedules and time constraints.
Date:
April 10, 1990
Creator:
Fassburg, T.A.
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Wayne Hendrick to Jack Davis, April 9, 1990]
Photocopy of a letter from Wayne Hendrick, Superintendent of Schools of Plano ISD, to Jack Davis. Hendrick is happy to accept Davis's invitation to serve on the advisory committee for the North Texas Institute for Educators on the Visual Arts, and that he looks forward to being involved in its endeavor.
Date:
April 9, 1990
Creator:
Hendrick, Wayne
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Gordon Dee Smith to Jack Davis, April 19, 1990]
Photocopy of a letter from Gordon Smith, President of InterCultura, to Jack Davis, co-director of North Texas Institute for Educators on the Visual Arts. Thanking Davis for the invitation to be a part of the North Texas Institute for Educators on the Visual Arts member. Smith writes that he looks forward to hearing more about the plans of the organization and their meetings. Included at the bottom of the letter is a hand-written phone number.
Date:
April 19, 1990
Creator:
Smith, Gordon Dee
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Nancy Cason to Very Brooks-Ray, April 29, 1990]
Photocopy of a letter from Nancy Cason, project coordinator of North Texas Institute for Educators on the Visual Arts to Dr. Vera Brooks-Ray, Assistant Superintendent for Dallas ISD. Cason writes that she and Bill McCarter enjoyed meeting up with Brooks and Janice Wiggins to discuss the goals for the DISD students. Cason she has also spoken with Marjorie King and mentioned how King was helpful in explaining Dallas's reading initiative program. Canson hopes that Wiggins will be able to participate in the Institute this summer and that the stipend will be worth the contribution for the impact she'll make to the Institute.
Date:
April 29, 1990
Creator:
Cason, Nancy
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Nancy Cason to Vera Brooks-Ray, April 29, 1990]
Photocopy of a letter from Nancy Cason, project coordinator of North Texas Institute for Educators on the Visual Arts to Dr. Vera Brooks-Ray, Assistant Superintendent of Dallas ISD. Cason writes how nice it was to meet with Ray and Janice Wiggins to discuss the goals for the DISD students, and is hopeful that Wiggins will be able to attend the summer Institute. Cason notes that the stipend will be worth the contribution she will be making to the institute.
Date:
April 29, 1990
Creator:
Cason, Nancy
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Jack Davis and Bill McCarter to E.A. Carmean, April 2, 1990]
Photocopy of a letter from Jack Davis and Bill McCarter, co-directors of North Texas Institute for Educators on the Visual Arts, to E.A Carmean, Director of the Modern Art Museum of Fort Worth. Thanking him for graciously agree to be chair of the Advisory Committee for the North Texas Institute for Educators on the Visual Arts. Davis and McCarter writes that being a member of the advisory committee they will periodically review the activities of the Institute and serve as liaison between the community and the Institute, which serves as stepping stone towards comprehensive visual arts program being integrated in school districts. Included in the letter are details about what to expect from being a committee member and the types of meetings they hope to have during the following year. Davis and McCarter write that they are excited about the opportunity to improve the quality of visual arts for students and develop a more informed audience. The letter states that enclosed are a list of people who have been invited to participate as committee members as well as a packet of materials that were sent to them. The list and materials are not present with the letter.
Date:
April 2, 1990
Creator:
Davis, Donald Jack & McCarter, William
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Nancy Cason to Sue Pacey, April 29, 1990]
Photocopy of a letter from Nancy Cason, Project Coordinator, to Sue Pacey, Executive Director of Young Audiences. In regards to the performance and artistic quality of the Young Audiences programs and NTIEVA's continued involvement with it. Cason gives Pacey details about an upcoming banquet to be held on June 29th at the UNT Union and the selection of one performer from the YA program to be involved
Date:
April 29, 1990
Creator:
Cason, Nancy
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Ricardo Hernandez to Jack Davis, April 16, 1990]
Photocopy of a letter from Ricardo Hernandez, Director of Programs at Texas Commission on the Arts, to Jack Davis. Congratulating Davis on the success of his project since its inception. Continued in the letter Hernandez accepts his invitation and active participation to join the advisory committee for the Institute. Hernandez thanks Davis for his service to the state and its people, as well as expresses his excitement to be apart of this project, and writes that the earlier he knows about the meeting dates the likely he is able to be a full participant.
Date:
April 16, 1990
Creator:
Hernandez, Ricardo
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Jan Keene Muhlert to Jack Davis and Bill McCarter, April 5, 1990]
Photocopy of a letter from Jan Keene Muhlert, Director of the Amon Carter, to Jack Davis and Bill McCarter, co-directors of North Texas Institute for Educators on the Visual Arts. Thanking them for their invitation for Muhlert to join the advisory committee of the North Texas Institute for Educators on the Visual Arts. Muhlert writes that she will be happy to do so and participate in the activities as time allows.
Date:
April 5, 1990
Creator:
Muhlert, Jan
Object Type:
Letter
System:
The UNT Digital Library
Enhancing the use of coals by gas reburning-sorbent injection
The objective of this project is to evaluate and demonstrate a cost effective emission control technology for acid rain precursors, oxides of nitrogen (NO{sub x}) and sulfur (SO{sub x}), on two coal fired utility boilers in Illinois. The units selected are representative of pre-NSPS design practices: tangential and cyclone fired. A third unit, wall fired, is on hold'' because of funding limitations. The specific objectives are to demonstrate reductions of 60 percent in NO{sub x} and 50 percent in SO{sub x} emissions, by a combination of two developed technologies, gas reburning (GR) and sorbent injection (SI). With GR, about 80--85 percent of the coal fuel is fired in the primary combustion zone. The balance of this fuel is added downstream as natural gas to create a slightly fuel rich environment in which NO{sub x} is converted to N{sub 2}. The combustion process is completed by overfire air addition. SO{sub x} emissions are reduced by injecting dry sorbents (usually calcium based) into the upper furnace. The sorbents trap SO{sub x} as solid sulfates that are collected in the particulate control device.
Date:
April 16, 1990
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Fundamental studies of catalytic processing of synthetic liquids
This project revolves around understanding the fundamental processes involved in the catalytic removal of harmful oxygenated organics present in coal liquids. We will model the complex type of sulfided Mo catalyst proposed for these reactions with a simple single crystal surfaces that display a controlled range and number of reaction sites and can be extensively characterized by surface science techniques.
Date:
April 10, 1990
Creator:
Watson, P. R.
Object Type:
Report
System:
The UNT Digital Library
Development of improved iron Fischer-Tropsch catalysts
The objective of proposed research is development of catalysts with enhanced slurry phase activity and better selectivity to fuel range products, through a more detailed understanding and systematic studies of the effects of pretreatment procedures and promoters/binders (silica) on catalyst performance.
Date:
April 30, 1990
Creator:
Bukur, D.B.; Patel, S.A.; Dalai, A.K.; Jayanthi, G. & Ledakowicz, S.
Object Type:
Report
System:
The UNT Digital Library
Development of microstructures with improved cryogenic toughness through local variations in stress state: Aluminum-lithium alloys
Microstructurally-induced changes in the local stress state (triaxial constraint) and their effect on fracture-toughness behavior are examined at ambient and cryogenic temperatures in an Al-Li-Cu-Zr alloy, processed in the form of 12.7 mm-thick naturally laminated'' plate containing aligned-weak interfaces and 1.6 mm-thin unlaminated sheet. It is shown that marked improvements in long-transverse (L-T) toughness can be achieved in the plate material at cryogenic temperatures by promoting through-thickness delamination along these interfaces, which relaxes local constraint and promotes a fracture-mode transition from global plane strain to local plane stress. Conversely, in thin sheet material, the absence of such interface delamination leads to a reduction in toughness with decrease in temperature, consistent with the greater degree of crack-tip constraint. 17 refs., 4 figs., 1 tab.
Date:
April 1, 1990
Creator:
Venkateswara Rao, K. T. & Ritchie, R. O.
Object Type:
Article
System:
The UNT Digital Library
Fatigue-crack propagation in aluminum-lithium alloys processed by power and ingot metallurgy
Fatigue-crack propagation behavior in powder-metallurgy (P/M) aluminum-lithium alloys, namely, mechanically-alloyed (MA) Al-4.0Mg-1.5Li-1.1C-0.80{sub 2} (Inco 905-XL) and rapid-solidification-processed (RSP) Al-2.6Li-1.0Cu-0.5Mg-0.5Zr (Allied 644-B) extrusions, has been studied, and results compared with data on an equivalent ingot-metallurgy (I/M) Al-Li alloy, 2090-T81 plate. Fatigue-crack growth resistance of the RSP Al-Li alloy is found to be comparable to the I/M Al-Li alloy; in contrast, crack velocities in MA 905-XL extrusions are nearly three orders of magnitude faster. Growth-rate response in both P/M Al-Li alloys, however, is high anisotropic. Results are interpreted in terms of the microstructural influence of strengthening mechanism, slip mode, grain morphology and texture on the development of crack-tip shielding from crack-path deflection and crack closure. 14 refs., 7 figs., 2 tabs.
Date:
April 1, 1990
Creator:
Venkateswara Rao, K.T.; Ritchie, R.O. (Lawrence Berkeley Lab., CA (United States)); Kim, N.J. (Pohang Inst. of Science and Technology (Korea, Republic of)) & Pizzo, P.P. (San Jose State Univ., CA (United States))
Object Type:
Article
System:
The UNT Digital Library
Applications of Micellar Enzymology to Clean Coal Technology. [Laccase]
This project is designed to develop methods for pre-combustion coal remediation by implementing recent advances in enzyme biochemistry. The novel approach of this study is incorporation of hydrophilic oxidative enzymes in reverse micelles in an organic solvent. Enzymes from commercial sources or microbial extracts are being investigated for their capacity to remove organic sulfur from coal by oxidation of the sulfur groups, splitting of C-S bonds and loss of sulfur as sulfuric acid. Dibenzothiophene (DBT) and ethylphenylsulfide (EPS) are serving as models of organic sulfur-containing components of coal in initial studies.
Date:
April 27, 1990
Creator:
Walsh, C. T.
Object Type:
Report
System:
The UNT Digital Library
[List of Donors to the Texas Academy of Math and Science]
List of donors to the Texas Academy of Math and Science, as of March 31, 1990. The list includes the name of the donor or company, the total amount of money given, and the amount received in cash for the years 1990, 1989, 1988, and 1987.
Date:
April 25, 1990
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
[Photograph 2012.201.B0071.0569]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "The 1990 Oklahoma City 89ers."
Date:
April 5, 1990
Creator:
Hoke, Doug
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0110.0181]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Reversing a stance taken just last week, an antitax group said Monday it will circulate an initiative petition drive to repeal House Bill 1017, the tax pacage."
Date:
April 30, 1990
Creator:
McDaniel, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Faculty Recital: 1990-04-09 - Mary Karen Clardy, flute
Access:
Use of this item is restricted to the UNT Community
Faculty recital performed at the UNT College of Music Recital Hall.
Date:
April 9, 1990
Creator:
Clardy, Mary Karen
Object Type:
Sound
System:
The UNT Digital Library
Student Recital: 1990-04-12 - Student Composers' Recital
Access:
Use of this item is restricted to the UNT Community
Student recital performed at the UNT College of Music.
Date:
April 12, 1990
Creator:
Student Composers' Recital
Object Type:
Sound
System:
The UNT Digital Library
Faculty Recital: 1990-04-17 - Steven Farish, baritone; Jack Roberts, piano
Access:
Use of this item is restricted to the UNT Community
Faculty recital performed at the UNT College of Music Recital Hall.
Date:
April 13, 1990
Creator:
Farish, Steven
Object Type:
Sound
System:
The UNT Digital Library
Some Software Implementations of the Functions Sine and Cosine
We present several software implementations of the elementary functions sin and cos designed to fit a large class of machines. Implementation details are provided. We also provide a detailed error analysis that bounds the errors of these implementations, over the full range of input arguments, from 0.721 to 0.912 units in the last place. Tests performed on these codes give results that are consistent with the error bounds.
Date:
April 1990
Creator:
Tang, Ping Tak Peter
Object Type:
Report
System:
The UNT Digital Library
Surveillance of Site A and Plot M : Report for 1989
The results of the environmental monitoring program conducted at Site A/Plot M in the Palos Park Forest Preserve area for CY 1989 are presented. The monitoring program is the ongoing remedial action that resulted from the 1976-1978 radiological characterization of the site. That study had determined that very low levels of hydrogen-3 (as tritiated water) migrated from the burial ground and was present in two nearby hand-pumped picnic wells. The current program consists of sample collection and analysis of air, surface and subsurface water, and bottom sediment.
Date:
April 1990
Creator:
Golchert, N. W.
Object Type:
Report
System:
The UNT Digital Library
Argonne National Laboratory-East Site Environmental Report for Calendar Year 1989
This report discusses the results of the environmental monitoring program at Argonne National Laboratory (ANL) for 1989. To evaluate the effects of ANL operations on the environment, samples of environmental media collected on the site, at the site boundary, and off the ANL site were analyzed and compared. A variety of radionuclides were measured in air, surface water, groundwater, soil, grass, bottom sediment, and milk samples.
Date:
April 1990
Creator:
Argonne National Laboratory
Object Type:
Report
System:
The UNT Digital Library