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Oral History Interview with Betty Jo Weeks, October 20, 2006

Access: Use of this item is restricted to the UNT Community
Interview with Betty Jo Weeks, resident of Cisco, Texas, regarding her memories of as member of the African American community in Eastland County. Weeks discusses attending all-black schools, her family and marriages, the barbeque business she started with her second husband Oscar Weeks, her career as a beautician, nurse's aid, and physical therapist's assistant, and experiences with discrimination.
Date: October 20, 2006
Creator: Rose, DeAnn & Weeks, Betty Jo
System: The UNT Digital Library
Hydrogen Outgassing from Lithium Hydride (open access)

Hydrogen Outgassing from Lithium Hydride

Lithium hydride is a nuclear material with a great affinity for moisture. As a result of exposure to water vapor during machining, transportation, storage and assembly, a corrosion layer (oxide and/or hydroxide) always forms on the surface of lithium hydride resulting in the release of hydrogen gas. Thermodynamically, lithium hydride, lithium oxide and lithium hydroxide are all stable. However, lithium hydroxides formed near the lithium hydride substrate (interface hydroxide) and near the sample/vacuum interface (surface hydroxide) are much less thermally stable than their bulk counterpart. In a dry environment, the interface/surface hydroxides slowly degenerate over many years/decades at room temperature into lithium oxide, releasing water vapor and ultimately hydrogen gas through reaction of the water vapor with the lithium hydride substrate. This outgassing can potentially cause metal hydriding and/or compatibility issues elsewhere in the device. In this chapter, the morphology and the chemistry of the corrosion layer grown on lithium hydride (and in some cases, its isotopic cousin, lithium deuteride) as a result of exposure to moisture are investigated. The hydrogen outgassing processes associated with the formation and subsequent degeneration of this corrosion layer are described. Experimental techniques to measure the hydrogen outgassing kinetics from lithium hydride and methods employing …
Date: April 20, 2006
Creator: Dinh, L. N.; Schildbach, M. A.; Smith, R. A.; Balazs, B. & McLean, W., II
System: The UNT Digital Library
Reports - DOD (open access)

Reports - DOD

Reports - DOD Medical Joint Cross - Service Group - Military Value Report - April 26, 2005
Date: March 20, 2006
Creator: United States. Department of Defense.
System: The UNT Digital Library