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Final Report: High Energy Physics and Cosmology, June 1, 1984 - May 31, 1999
The DOE grant supported the theoretical particle astrophysics group , and is coordinated by the Principal Investigator. Participants include faculty members Marc Davis, Lawrence Hall and Hitoshi Murayama, together with several postdoctoral fellows. During the previous and current funding period (1996--1998), several important results have been obtained that are briefly summarized in this report, including: dark matter; cosmic microwave background; and early universe and structure formation.
Date:
May 31, 1999
Creator:
Silk, Joseph
Object Type:
Report
System:
The UNT Digital Library
IMPROVED RISK ESTIMATES FOR CARBON TETRACHLORIDE
Carbon tetrachloride has been used extensively within the DOE nuclear weapons facilities. Rocky Flats was formerly the largest volume consumer of CCl4 in the United States using 5000 gallons in 1977 alone (Ripple, 1992). At the Hanford site, several hundred thousand gallons of CCl4 were discharged between 1955 and 1973 into underground cribs for storage. Levels of CCl4 in groundwater at highly contaminated sites at the Hanford facility have exceeded 8 the drinking water standard of 5 ppb by several orders of magnitude (Illman, 1993). High levels of CCl4 at these facilities represent a potential health hazard for workers conducting cleanup operations and for surrounding communities. The level of CCl4 cleanup required at these sites and associated costs are driven by current human health risk estimates, which assume that CCl4 is a genotoxic carcinogen. The overall purpose of these studies was to improve the scientific basis for assessing the health risk associated with human exposure to CCl4. Specific research objectives of this project were to: (1) compare the rates of CCl4 metabolism by rats, mice and hamsters in vivo and extrapolate those rates to man based on parallel studies on the metabolism of CCl4 by rat, mouse, hamster and human …
Date:
December 31, 1999
Creator:
Benson, Janet M. & Springer, David L.
Object Type:
Report
System:
The UNT Digital Library
Oxidative Mineralization and Characterization of Polyvinyl Alcohol Solutions for Wastewater Treatment
The principal objectives of this study are to identify an appropriate polyvinyl alcohol (PVA) oxidative mineralization technique, perform compatibility and evaporation fate tests for neat and mineralized PVA, and determine potential for PVA chemical interferences which may affect ion exchange utilization for radioactive wastewater processing in the nuclear industry.
Date:
August 31, 1999
Creator:
Oji, L.N.
Object Type:
Article
System:
The UNT Digital Library
The Sealy News (Sealy, Tex.), Vol. 112, No. 106, Ed. 1 Friday, December 31, 1999
Semiweekly newspaper from Sealy, Texas that includes local, state, and national news along with advertising.
Date:
December 31, 1999
Creator:
Chionsini, Brandi
Object Type:
Newspaper
System:
The Portal to Texas History
Proceedings of the XIX international Linac conference
None
Date:
March 31, 1999
Creator:
Eyberger, C. E.; Pardo, R. C.; White, M. M. & Jaje, K. M.
Object Type:
Article
System:
The UNT Digital Library