Search Results

open access

3-D object reconstruction emission and transmission tomography with limited angular input

Description: The effects of the angular range of data taking in reconstructions in planar positron cameras using the deconvolution method and the matrix method, respectively, are investigated. It is found that in the absence of any a priori information there are undetermined components in the reconstruction if the field of view of the positron camera is limited. However, most of the undetermined components are recovered in the case in which the transverse spacing of the object is discrete, and all of them are recovered if the fact that the object extent is finite is utilized. It is concluded that the two reconstruction methods are mathematically equivalent. The results obtained can be applied to other transmission and emission imaging devices.
Date: October 1978
Creator: Tam, K. C.; Perez-Mendez, V. & Macdonald, B.
Partner: UNT Libraries Government Documents Department
open access

ACES demonstration: construction, startup, and performance report

Description: A 2000-ft/sup 2/ single-family residence was constructed during the second quarter of 1976 to demonstrate the energy-conserving features of additional insulation, a ventilation cooling cycle, and the Annual Cycle Energy System (ACES). The ACES is an integrated heating and cooling system that supplies space heating, hot water, and space cooling using a heat pump and low-temperature thermal storage. Included in this report are a discussion of the construction techniques employed and the problems encountered during construction, a description of the ACES concept and the ACES mechanical package, and a discussion of the ACES performance and the experiences obtained during initial operation of the ACES. Continuous operation and data collection were begun in May 1977. Performance data from November 1977 through March 1978 have shown a seasonal heating coefficient of performance of 2.77 for the ACES, giving a 63% energy reduction compared to electric resistance space and water heating.
Date: October 1, 1978
Creator: Holman, A.S. & Brantley, V.R.
Partner: UNT Libraries Government Documents Department
open access

Acoustic location of infiltration openings in buildings. Final report

Description: Unnecessary air infiltration (''draftiness'') in buildings can be a major cause for excessive energy consumption. A method for using sound to locate, for subsequent sealing, the openings of air infiltration leakage paths in buildings has been investigated. The results of pertinent analytical studies, laboratory experiments, and field applications of this acoustic-location method are reported; and a plan is provided to encourage national implementation of the method. Low-cost, readily available equipment and procedures are described whereby the average building contractor or homeowner can use acoustic leak location to pinpoint many of the air infiltration openings in a building.
Date: October 1, 1978
Creator: Keast, D.N.
Partner: UNT Libraries Government Documents Department
open access

ACTL: evaluated neutron activation cross section library-evaluation techniques and reaction index. [Tables, 10/sup -10/ to 20 MeV]

Description: A library of evaluated neutron-induced activation cross sections (ACTL) was compiled. The library covers incident neutron energies from 10/sup -10/ to 20 MeV. General descriptions of the evaluation methods and an index to the evaluated cross sections are presented. 21 references.
Date: October 17, 1978
Creator: Gardner, M.A. & Howerton, R.J.
Partner: UNT Libraries Government Documents Department
open access

Advanced gas cooled nuclear reactor materials evaluation and development program. Selection of candidate alloys. Vol. 1. Advanced gas cooled reactor systems definition

Description: Candidate alloys for a Very High Temperature Reactor (VHTR) Nuclear Process Heal (NPH) and Direct Cycle Helium Turbine (DCHT) applications in terms of the effect of the primary coolant exposure and thermal exposure were evaluated. (FS)
Date: October 31, 1978
Creator: Marvin, M. D.
Partner: UNT Libraries Government Documents Department
open access

AES study of the adsorption of O/sub 2/, CO, CO/sub 2/, and H/sub 2/O on indium

Description: The adsorption of various oxygen-containing gases on clean polycrystalline In has been studied. For the In-O/sub 2/ system, the relationship between N(E) areas and dN(E)/dE peak heights for the In MNN Auger transition was found to be linear. At saturation, an oxygen/indium ratio of 3/2 was measured, consistent with the formation of the stable oxide In/sub 2/O/sub 3/. Low coverage sticking coefficients were found to be approximately .014 for O/sub 2/, approximately .004 for H/sub 2/O, approximately 5 x 10/sup -5/ for CO, and approximately 2 x 10/sup -5/ for CO/sub 2/. In each case, chemical shifts and peak distortions in the N(E) and dN(E)/dE spectra have been measured for the gas-saturated In, the largest being approximately 3 eV for the MNN transition of O/sub 2/-saturated surface.
Date: October 1, 1978
Creator: Rossnagel, S.M.; Dylla, H.F. & Cohen, S.A.
Partner: UNT Libraries Government Documents Department
open access

Air leakage in refrigerated vans: report of confirmation tests conducted with the prototype air leakage test set

Description: The objective of the work described was to evaluate the utility of the Prototype Air Leakage Test Set constructed for the United States Department of Energy under this contract, and to compare the air leakage data obtained by use of the Test Set to that obtained by use of three different, existing test equipments at three manufacturers of trailers and containers.
Date: October 1, 1978
Partner: UNT Libraries Government Documents Department
open access

Alternative oxide fuel pellet fabrication for irradiation testing. [LMFBR]

Description: Fabrication of experimental breeder reactor fuel pellets by the common cold-press-and-sinter technique for irradiation testing in EBR-II is discussed. Fuel types include mixed thoria-plutonia, UO/sub 2/ enriched with 22 weight percent /sup 233/U in U, UO/sub 2/ enriched with thirty-four weight percent /sup 235/U in U, and mixed urania-plutonia.
Date: October 27, 1978
Creator: Rasmussen, D. E.; Jentzen, W. R. & McCord, R. B.
Partner: UNT Libraries Government Documents Department

[Alumni Awards Banquet, October 27, 1978]

Description: Photograph from the Alumni Awards Banquet, Friday, October 27, 1978, at the Silver Eagle Suite, University Union, North Texas State University. Photo is believed to be A.M. Willis Jr., Chairman of the NTSU Board of Regents, receiving first Honorary Alumnus award.
Date: October 27, 1978
Partner: UNT Libraries Special Collections

[Alumni Awards Banquet, October 27, 1978]

Description: Photograph from the Alumni Awards Banquet, Friday, October 27, 1978, at the Silver Eagle Suite, University Union, North Texas State University. Seen in the photograph are (from left) Dr. Frank Spencer (North Texas State Teachers College 1944), physician and educatior; Ms. Holly Harp (North Texas State University 1967), fashion designer; and Mr. W.C. Orr Jr. (North Texas State Teachers College 1932), banker and financial expert. Each holds the plaque they received after being awarded the NTSU Alumni Association Distinguished Alumni Award at the banquet.
Date: October 27, 1978
Partner: UNT Libraries Special Collections

[Alumni Awards Banquet, October 27, 1978]

Description: Photograph from the Alumni Awards Banquet, Friday, October 27, 1978, at the Silver Eagle Suite, University Union, North Texas State University. At center is Kenneth May (North Texas State University 1949), NTSU Regent, editor of the Lubbock Avalanche-Journal, and 1978 winner of the Outstanding Alumni Service Award. Mr. May is laughing with another, unidentified gentleman, and stand next to a woman with her back to the camera.
Date: October 27, 1978
Partner: UNT Libraries Special Collections

[Alumni Awards Banquet, October 27, 1978]

Description: Photograph from the Alumni Awards Banquet, Friday, October 27, 1978, at the Silver Eagle Suite, University Union, North Texas State University. Seen in the photograph are (from left) Dr. Charldean Nowell (North Texas State College 1968), Chariman of the Department of Political Science; Mr. Kenneth May (North Texas State Teachers College/North Texas State College 1949), NTSU Regent and editor of the Lubbock Avalanche-Journal; and Mr. Herman Vaughan (North Texas State College 1950), North Texas business executive. Each holds the plaque they received after being awarded the NTSU Alumni Association Outstanding Alumni Service Award at the banquet.
Date: October 27, 1978
Partner: UNT Libraries Special Collections

[Alumni Awards Banquet, October 27, 1978]

Description: Photograph from the Alumni Awards Banquet, Friday, October 27, 1978, at the Silver Eagle Suite, University Union, North Texas State University. Seen in the photograph is (far left) Dr. Charldean Nowell (North Texas State College 1968), Chariman of the Department of Political Science, and winner of the 1978 Outstanding Alumni Service Award, speaking with two unidentified gentlemen.
Date: October 27, 1978
Partner: UNT Libraries Special Collections

[Alumni Awards Banquet, October 27, 1978]

Description: Photograph from the Alumni Awards Banquet, Friday, October 27, 1978, at the Silver Eagle Suite, University Union, North Texas State University. Seen in the photograph are the winners of the 1978 Distinguished Teaching Awards. From left: Dr. Ernest Clifton, Department of English; Dr. Kendall Cochran, Department of Economics; Dr. Ruth Kurth, College of Education; Dr. Glen Taylor, College of Business Administration; and Myrl Harriss, accepting for Beulah Harris, Department of Physical Education, awarded posthumously.
Date: October 27, 1978
Partner: UNT Libraries Special Collections

[Alumni Awards Banquet, October 27, 1978]

Description: Photograph from the Alumni Awards Banquet, Friday, October 27, 1978, at the Silver Eagle Suite, University Union, North Texas State University. Seen in the photograph are (from left) Dr. Frank Spencer (North Texas State Teachers College 1944), physician and educatior; Ms. Holly Harp (North Texas State University 1967), fashion designer; and Mr. W.C. Orr Jr. (North Texas State Teachers College 1932), banker and financial expert. Each holds the plaque they received after being awarded the NTSU Alumni Association Distinguished Alumni Award at the banquet.
Date: October 27, 1978
Partner: UNT Libraries Special Collections

[Alumni Awards Banquet, October 27, 1978]

Description: Photograph from the Alumni Awards Banquet, Friday, October 27, 1978, at the Silver Eagle Suite, University Union, North Texas State University. The photograph shows several unidentified men and women standing in the banquet room speaking with (2nd from left) Dr. Glen Taylor of the College of Business Administration, winner of the 1978 Distinguished Teaching Award.
Date: October 27, 1978
Partner: UNT Libraries Special Collections

[Alumni Awards Banquet, October 27, 1978]

Description: Photograph from the Alumni Awards Banquet, Friday, October 27, 1978, at the Silver Eagle Suite, University Union, North Texas State University. Mr. W.C. Orr Jr. (North Texas State Teachers College 1944), banker and financial expert, and winner of the 1978 Distinguished Alumni Award, is seen talking with an unidentified woman and an unidentified gentleman, standing in the banquet room.
Date: October 27, 1978
Partner: UNT Libraries Special Collections

[Alumni Awards Banquet, October 27, 1978]

Description: Photograph from the Alumni Awards Banquet, Friday, October 27, 1978, at the Silver Eagle Suite, University Union, North Texas State University. Kenneth May (North Texas State University 1949), NTSU Regent and editor of the Lubbock Avalanche-Journal, is seen receiving the 1978 Outstanding Alumni Service Award.
Date: October 27, 1978
Partner: UNT Libraries Special Collections

[Alumni Awards Banquet, October 27, 1978]

Description: Photograph from the Alumni Awards Banquet, Friday, October 27, 1978, at the Silver Eagle Suite, University Union, North Texas State University. Seen in the photograph are (from left) Dr. Charldean Nowell (North Texas State College 1968), Chariman of the Department of Political Science; Mr. Kenneth May (North Texas State Teachers College/North Texas State College 1949), NTSU Regent and editor of the Lubbock Avalanche-Journal; and Mr. Herman Vaughan (North Texas State College 1950), North Texas business executive. Each holds the plaque they received after being awarded the NTSU Alumni Association Outstanding Alumni Service Award at the banquet.
Date: October 27, 1978
Partner: UNT Libraries Special Collections

[Alumni Awards Banquet, October 27, 1978]

Description: Photograph from the Alumni Awards Banquet, Friday, October 27, 1978, at the Silver Eagle Suite, University Union, North Texas State University. Dr. Charldean Newell (North Texas State College 1960), Chairman of the Department of Political Science, is seen receiving the 1978 Outstanding Alumni Service Award.
Date: October 27, 1978
Partner: UNT Libraries Special Collections

[Alumni Awards Banquet, October 27, 1978]

Description: Photograph from the Alumni Awards Banquet, Friday, October 27, 1978, at the Silver Eagle Suite, University Union, North Texas State University. Two unidentified gentlemen are standing in the banquet room, speaking, with other people visible to sides and in back.
Date: October 27, 1978
Partner: UNT Libraries Special Collections

[Alumni Awards Banquet, October 27, 1978]

Description: Photograph from the Alumni Awards Banquet, Friday, October 27, 1978, at the Silver Eagle Suite, University Union, North Texas State University. In the photograph are two unidentified gentlemen - one younger, one older - and one unidentified older woman are standing in the banquet room speaking, with other people in the background.
Date: October 27, 1978
Partner: UNT Libraries Special Collections
Back to Top of Screen