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Year
Month
SOILD: A computer model for calculating the effective dose equivalent from external exposure to distributed gamma sources in soil
The SOLID computer model was developed for calculating the effective dose equivalent from external exposure to distributed gamma sources in soil. It is designed to assess external doses under various exposure scenarios that may be encountered in environmental restoration programs. The models four major functional features address (1) dose versus source depth in soil, (2) shielding of clean cover soil, (3) area of contamination, and (4) nonuniform distribution of sources. The model is also capable of adjusting doses when there are variations in soil densities for both source and cover soils. The model is supported by a data base of approximately 500 radionuclides. 4 refs.
Date:
January 1, 1991
Creator:
Chen, S. Y.; LePoire, D.; Yu, C. (Argonne National Lab., IL (United States)); Schafetz, S. (Rockland Community Coll., Suffern, NY (United States)) & Mehta, P. (Fayetteville State Univ., NC (United States))
Object Type:
Article
System:
The UNT Digital Library
A many particle-tracking detector with drift planes and segmented cathode readout
We describe the design and performance of a detector system for tracking charged particles in an environment of high track density and rates up to 1 MHz. The system operates in the forward spectrometer of the BNL Heavy Ion experiment E814 and uses principles of general interest in high rate, high multiplicity applications such as at RHIC or SSC. We require our system to perform over a large dynamic range, detecting singly charged particles as well as fully ionized relativistic {sup 28}Si. Results on gas gain saturation, {delta}-ray suppression, and overall detector performance in the presence of a 14.6 GeV/nucleon {sup 28}Si beam and a 14 GeV proton beam are presented. 6 refs., 9 figs.
Date:
January 1, 1990
Creator:
Fischer, J.; Lissauer, D.; Ludlam, T.; Makowiecki, D.; O'Brien, E.; Radeka, V. et al.
Object Type:
Article
System:
The UNT Digital Library
(Experimental physics at Yale University: Research proposal and budget Proposal, 1 January 1992--31 December 1996)
This report reviews the following topics: nuclear and quark matter; correlated pairs from heavy ion collisions-search for new low mass resonances coupled to electron-positron collisions; proposed light ion research program; experimental nuclear astrophysics (explosive nucleosynthesis); search for rare decay modes and rare processes in nuclei; and nuclear spectroscopy at the extremes of spin, isospin, and temperature. (LSP).
Date:
January 1, 1992
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Elastic constants and the structural phase transition in La sub 2-x Sr sub x CuO sub 4
Resonant ultrasound spectroscopy is used to measure the temperature dependence of all six elastic moduli of La{sub 2-x}Sr{sub x}CuO{sub 4}. A giant softening (> 50% reduction) in the in-plane shear modulus, c{sub 66}, is observed and is attributed to the tetragonal-orthorhombic structural phase transition in this material. This phase transition and the corresponding softening is examined with a simple anharmonic mechanical model and a macroscopic Ginsburg-Landau formalism exploiting the full symmetry of the crystal. 16 refs., 5 figs.
Date:
January 1, 1991
Creator:
Sarrao, J.L.; Lei, Ming; Stekel, A.; Bell, T.M.; Leisure, R. G.; Sham, L.J. et al.
Object Type:
Article
System:
The UNT Digital Library
Frequency-domain stress prediction algorithm for the LIFE2 fatigue analysis code
The LIFE2 computer code is a fatigue/fracture analysis code that is specialized to the analysis of wind turbine components. The numerical formulation of the code uses a series of cycle mount matrices to describe the cyclic stress states imposed upon the turbine. However, many structural analysis techniques yield frequency-domain stress spectra and a large body of experimental loads (stress) data is reported in the frequency domain. To permit the analysis of this class of data, a Fourier analysis module has been added to the code. The module transforms the frequency spectrum to an equivalent time series suitable for rainflow counting by other modules in the code. This paper describes the algorithms incorporated into the code and uses experimental data to illustrate their use. 10 refs., 11 figs.
Date:
January 1, 1992
Creator:
Sutherland, H. J.
Object Type:
Article
System:
The UNT Digital Library
Impact of Nonequilibrium Particle Temperature Considerations on Seeded Coal Combustion Plasma Properties
The first of the three tasks of this research activity is to develop a model that represents steady, nonequilibrium energy interactions between post-combustion entrained particles and carrier gases, under typical coal-fired MHD operating conditions. The second task is to use the developed model to evaluate, for both the MHD linear channel and disk configurations. the impact of nonequilibrium particle temperatures on predicted gasdynamic and electrical property values that depend, at times critically, on plasma temperatures, and on which the overall MHD system performance depends. The third task is to evaluate the relative impact of gas-particle temperature differences on generator slag phenomena and consequently on MHD channel performance.
Date:
January 1, 1992
Creator:
Oni, A. A.
Object Type:
Report
System:
The UNT Digital Library
[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
[Letter from Cassandra Broadus to Sonja Starnes, January 29, 1991]
Photocopy of a letter from Cassandra Broadus, North Texas Institute for Educators on the Visual Arts, to Sonja Starnes, Bedford Heights Elementary. In regards to the enclosed Crayola Dream-Maker IV packet for Starnes' classroom. The packet offers good ideas for studio production activities as well as additional information on art advocacy. Broadus asks Starnes to share the packet with Peggy Mitchell and other teachers at Bedford.
Date:
January 29, 1991
Creator:
Broadus, Cassandra
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Cassandra Broadus to Donna Engles, January 11, 1991]
Photocopy of a letter from Cassandra Broadus, North Texas Institute for Educators on the Visual Arts, to Donna Engels, teacher at Evers Park Elementary School. Discussing her enjoyment when visiting Engels' classroom and how the children were so receptive and interested in the art lesson. Enclosed in the letter, Broadus has provided an interesting art reproduction by artist Melissa Miller and her work "Clowns," hoping that Engels can be able to use while teaching her class the letter "M." Broadus will contact Engels at a later date to discuss details about another visitation.
Date:
January 11, 1991
Creator:
Broadus, Cassandra
Object Type:
Letter
System:
The UNT Digital Library
[RE: NTIEVA Newsletters, January 13, 1992]
Photocopy of a letter from Nancy Reynolds, Project Coordinator of North Texas Institute for Educators on the Visual Arts to Museum Educations, in regards to the NTIEVA Newsletter. Reynolds requests of the museums educators, contributions for the newsletters: regular columns, details about an exhibit, education programs or guests speakers. Reynolds writes that they're trying to publish four newsletters a year so she would like their contributions or articles as soon as possible. Reynolds has also included a call for "The Docent Educator" and has included with her letter their guidelines for submissions.
Date:
January 13, 1992
Creator:
Reynolds, Nancy
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Bill McCarter to Deborah Howes, January 16, 1997]
Photocopy of a letter from Bill McCarter, co-director of North Texas Institute for Educators on the Visual Arts, to Deborah Howes, Associate Museum Educator at the Metropolitan Museum of Art. The recommendation letter is in regards to the news of the Met's consideration of having one of UNT's graduate students, Rebecca Arkenberg, hold an internship in Howes's department. McCarter goes on to write about how wonderful of a student Arkenberg is and that he'll be sad to see her go but her skills are superb beyond others and her work with North Texas Institute for Educators on the Visual Arts is exemplary.
Date:
January 16, 1997
Creator:
McCarter, William
Object Type:
Letter
System:
The UNT Digital Library
[RE: "Achieving National Education Reform: Arts Education as Catalyst," January 7, 1993]
Photocopy of a letter from Vicki Rosenberg, program officer of the Getty Center, to the Regional and Californian Institute Exhibition Staff. In regards to "Achieving National Education Reform: Art Education as Catalyst" conference being held at San Francisco Hilton and Towers, February 3, 1993. The letter holds information about travel arrangements needed to be made before January 20th, hotel reservations and notification that the Getty center will cover the cost of lodging, incidental expenses that the center will reimburse related to the attendance at the conference, including meals and transportation from airport, exhibition staff duties being members of the regional institute, and conference registration. Enclosed with the invitation, are a schedule of the conference for the exhibit staff and an agenda list.
Date:
January 7, 1993
Creator:
Rosenberg, Vicki
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Cassandra Broadus to Mary Kolter, January 28, 1991]
Photocopy of a letter from Cassandra Broadus, North Texas Institute for Educators on the Visual Arts, to Mary Kolter, T.D. Marshall Elementary School. Exclaiming how excited Broadus was when she left Kolter's classroom. Broadus writes that the Summer Institute program seems to be going very successful and that she is pleased with the implementation of the discipline-based art education and with how the members of T.D. Marshall's are involved. Broadus writes that she plans to revisit the classroom at the end of the month for another session and that she'll call to confirm the time and to discuss with Mr. Graham what time she could visit his classroom for the writing art lesson.
Date:
January 28, 1991
Creator:
Broadus, Cassandra
Object Type:
Letter
System:
The UNT Digital Library
[Black Music and the Civil Rights Movement Concert Photograph 52]
Photograph taken at the Black Music and the Civil Rights Movement Concert featuring Mom and Pop Winans held by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
January 19, 1997
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Black Music and the Civil Rights Movement Concert Photograph 35]
Photograph taken at the Black Music and the Civil Rights Movement Concert featuring Mom and Pop Winans held by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
January 19, 1997
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Black Music and the Civil Rights Movement Concert Photograph 44]
Photograph taken at the Black Music and the Civil Rights Movement Concert featuring Mom and Pop Winans held by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
January 19, 1997
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Black Music and the Civil Rights Movement Concert Photograph 47]
Photograph taken at the Black Music and the Civil Rights Movement Concert featuring Mom and Pop Winans held by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
January 19, 1997
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Black Music and the Civil Rights Movement Concert Photograph 3]
Photograph taken at the Black Music and the Civil Rights Movement Concert featuring Mom and Pop Winans held by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
January 19, 1997
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Black Music and the Civil Rights Movement Concert Photograph 29]
Photograph taken at the Black Music and the Civil Rights Movement Concert featuring Mom and Pop Winans held by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
January 19, 1997
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Black Music and the Civil Rights Movement Concert Photograph 30]
Photograph taken at the Black Music and the Civil Rights Movement Concert featuring Mom and Pop Winans held by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
January 19, 1997
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Black Music and the Civil Rights Movement Concert Photograph 21]
Photograph taken at the Black Music and the Civil Rights Movement Concert featuring Mom and Pop Winans held by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
January 19, 1997
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Black Music and the Civil Rights Movement Concert Photograph 10]
Photograph taken at the Black Music and the Civil Rights Movement Concert featuring Mom and Pop Winans held by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
January 19, 1997
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Black Music and the Civil Rights Movement Concert Photograph 24]
Photograph taken at the Black Music and the Civil Rights Movement Concert featuring Mom and Pop Winans held by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
January 19, 1997
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Black Music and the Civil Rights Movement Concert Photograph 37]
Photograph taken at the Black Music and the Civil Rights Movement Concert featuring Mom and Pop Winans held by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
January 19, 1997
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library