U N T Established 1890 U N T
University Libraries

Digital Collections

Access

Resource Type

Partner

Collection

Serial/Series Title

Degree Department

Degree Discipline

Degree Level

Country

States

Counties

Decade

Year

Month

Day

Language

390,442 Matching Results

Start Over Decade 1970-1979

Results open in a new window/tab.

prev Results: 25 - 48 of 390,442 next
Best Match Title Creator Date Created (Newest) Date Created (Oldest) Date Added (Newest) Date Added (Oldest)
Linear-motor drives for machine tools (open access)

Linear-motor drives for machine tools

Conventional techniques to position moving platforms on precision machines have relied heavily on mechanical drives such as the ball-nut/lead-screw system. Unfortunately, as positioning tolerances become more and more demanding, the cyclic errors-inherent even in precision gear drives-contribute an excessive amount of positioning uncertainty. The linear-motor drive system is one approach to provide a smooth, accurate, vibration-free method for locating a moving platform. Some existing uses of linear motors in industry as well as potential future applications on precision machines are discussed.
Date: December 31, 1979
Creator: Barkman, W.E.
Object Type: Report
System: The UNT Digital Library
Mechanical modeling of nuclear waste disposal in argillite at the Nevada Test Site (open access)

Mechanical modeling of nuclear waste disposal in argillite at the Nevada Test Site

Numerical calculations for a near surface heater experiment in argillite conducted at the Nevada Test Site were performed using the finite element code ADINA assuming a two-dimensional axisymmetric geometry. The existence and extent of the region of tensional opening of joints surrounding the heater, predicted by the mechanical model, were confirmed by posttest borehole inspection, permeability measurements, and drillback. Exrapolation of near surface heater model to repository depths reveals the necessity for prior knowledge of the mechanical properties and state of stress in-situ. The extent of the joint opening zone, for example, is not altered by changes in the elastic modulus at the near surface, but is significantly decreased beyond certain depths depending upon the in-situ elastic modulus. Results of these calculations are presented. To further define the behavior at depth, and place bounds on the joint opening zone, far-field calculations were performed for a generic repository in argillite. Both spent fuel and high level waste heat sources were considered at different burial densities and depths. Results of a parametric study are presented in which the mechanical properties, in-situ stresses, and waste heat sources were varied.
Date: December 31, 1979
Creator: Thomas, R. K. & Lappin, A. R.
Object Type: Article
System: The UNT Digital Library
Model development for in situ test results in argillaceous rock (open access)

Model development for in situ test results in argillaceous rock

Near-surface heater tests have been conducted in two different geologic settings for argillaceous rocks. The results of these tests have provided the in situ data necessary to develop the thermomechanical models for predicting the response of argillaceous rock to thermal load representative of high-level nuclear waste.
Date: December 31, 1979
Creator: Tyler, L. D.
Object Type: Report
System: The UNT Digital Library
Mound Facility. 1978 annual report (open access)

Mound Facility. 1978 annual report

For Mound Facility, the year 1978 was one of progress marked by enhanced mission assignments and significant milestones. The thirtieth anniversary of the site was celebrated, and Monsanto Research Corporation began a new 5 year contract to operate the Mound Facility. Long-standing production assignments were strengthened, and were were given a new responsibility: to develop and produce all ceramic parts used in Mound-build products. progress toward US energy objectives was bolstered by Mound programs supporting the development of nuclear fusion poser, unlocking previously us attainable fossil fuels, ensuring the safety and security of nuclear material handling operations, and exploring the real promise of energy form the sun. In 1978, we focused our attention on many efforts aimed at a brighter, more secure future.
Date: December 31, 1979
Creator: unknown
Object Type: Report
System: The UNT Digital Library
News Bulletin (Castroville, Tex.), Vol. 21, No. 9, Ed. 1 Monday, December 31, 1979 (open access)

News Bulletin (Castroville, Tex.), Vol. 21, No. 9, Ed. 1 Monday, December 31, 1979

Weekly newspaper from Castroville, Texas that includes local, state, and national news along with extensive advertising.
Date: December 31, 1979
Creator: Schott, Bobbie
Object Type: Newspaper
System: The Portal to Texas History
[News Clip: 1979 Marriage] captions transcript

[News Clip: 1979 Marriage]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 31, 1979, 5:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Al Panzera] captions transcript

[News Clip: Al Panzera]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 31, 1979, 5:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Balloon wedding] captions transcript

[News Clip: Balloon wedding]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 31, 1979, 10:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Convention center] captions transcript

[News Clip: Convention center]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 31, 1979, 10:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Crime victims] captions transcript

[News Clip: Crime victims]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 31, 1979, 6:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: DWI patrol] captions transcript

[News Clip: DWI patrol]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 31, 1979, 10:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Gasoline] captions transcript

[News Clip: Gasoline]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 31, 1979, 12:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Ice storm] captions transcript

[News Clip: Ice storm]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 31, 1979, 10:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Ice storm] captions transcript

[News Clip: Ice storm]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 31, 1979, 6:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Klan Funeral] captions transcript

[News Clip: Klan Funeral]

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 31, 1979, 6:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Leather clean] captions transcript

[News Clip: Leather clean]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 31, 1979, 5:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Panera] captions transcript

[News Clip: Panera]

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 31, 1979, 6:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Parade] captions transcript

[News Clip: Parade]

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 31, 1979, 6:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Wayne Brown] captions transcript

[News Clip: Wayne Brown]

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 31, 1979, 10:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Wayne Brown] captions transcript

[News Clip: Wayne Brown]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 31, 1979, 5:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: X-ray costs] captions transcript

[News Clip: X-ray costs]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 31, 1979, 6:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
NTS Terminal Waste Storage Project. Annual report, FY 1978 (should have been 1979) (open access)

NTS Terminal Waste Storage Project. Annual report, FY 1978 (should have been 1979)

The primary thrust of the NTS Terminal Waste Storage Project during FY 1978 was to continue an evaluation of the suitability of the Nevada Test Site (NTS) for siting a commercial spent fuel or high-level waste repository. At the beginning of the year, three primary issues were identified. They are: (1) is waste isolation at the NTS compatible with weapons testing; (2) are there suitable geohydrologic settings available on the NTS; and (3) are there suitable disposal media available at NTS. The NTS Terminal Waste Storage Project has been organized primarily to address these three issues. The southwestern area of the NTS has been identified as compatible with both current and future weapons testing. The NTS and adjacent areas of southern Nevada contain media which are probably suitable for waste isolation and which occur in a region characterized by long groundwater flow paths through sorptive media. However, utilization of the southwestern part of NTS requires that several geotechnical issues be addressed intensively. These are: (1) the potential for earthquakes at and near NTS; (2) the potential for future volcanism at possible repository sites; (3) the location and nature of faults; and (4) the characterization of the groundwater flow system from …
Date: December 31, 1979
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Oklahoma City Times (Oklahoma City, Okla.), Vol. 90, No. 269, Ed. 1 Monday, December 31, 1979 (open access)

Oklahoma City Times (Oklahoma City, Okla.), Vol. 90, No. 269, Ed. 1 Monday, December 31, 1979

Daily newspaper from Oklahoma City, Oklahoma that includes local, state, and national news along with advertising.
Date: December 31, 1979
Creator: Standard, Jim
Object Type: Newspaper
System: The Gateway to Oklahoma History
Oklahoma City Times (Oklahoma City, Okla.), Vol. 90, No. 269, Ed. 2 Monday, December 31, 1979 (open access)

Oklahoma City Times (Oklahoma City, Okla.), Vol. 90, No. 269, Ed. 2 Monday, December 31, 1979

Daily newspaper from Oklahoma City, Oklahoma that includes local, state, and national news along with advertising.
Date: December 31, 1979
Creator: Standard, Jim
Object Type: Newspaper
System: The Gateway to Oklahoma History