Electron Requirements of Bonds in Metal Borides (open access)

Electron Requirements of Bonds in Metal Borides

From abstract: "Electrical measurements have been made on CaB6, SrB6, BaB6, YB2, YB4, YB6, and YB12 for the purpose of testing models of the electronic structure of the boron atoms in the four boride types represented. The compounds CaB6, SrB6, and BaB6 were found to be semiconductors. The Hall coefficients of YB4 was also measured, but could not be interpreted because the free electron theory does not provide a theoretical value for comparison with experiment. The results are in agreement with the models proposed."
Date: May 28, 1962
Creator: Johnson, Robert W. & Daane, A. H. (Adrian Hill), 1919-
System: The UNT Digital Library
Response of Protective Vaults to Blast Loading (open access)

Response of Protective Vaults to Blast Loading

A reinforced-concrete steel-plate-lined vault and steel vault door were exposed to a nuclear detonation (shot Priscilla, about 37 kt, balloon suspended, at 700 ft) at the predicted 75-psi peak incident pressure level (1150 ft from Ground Zero). The vault was designed by the ultimate-strength theory to utilize the additional strain energy available in the elastoplastic and plastic ranges. Flexural and thrust capacities were determined, and shear capacity was computed. It was established that above-ground structures can be designed and constructed to survive the pressure levels experienced by this structure. The vault and door provided adequate blast and thermal protection for normal usage, and the structure was adequate to resist overturning and excessive sliding under conditions of the test.
Date: May 28, 1962
Creator: Cohen, Edward; Laing, E. & Bottenhofer, A.
System: The UNT Digital Library
Wall and Bulk Temperatures for Fluids Flowing in Concentric Annuli (open access)

Wall and Bulk Temperatures for Fluids Flowing in Concentric Annuli

From introduction: "This brief paper deals with the subject of radial temperature differences for heat transfer to fluids flowing through concentric annuli under the following conditions and assumptions: a. constant heat flux; b. fully-established turbulent flow; c. heat transfer through inner wall only; d. physical properties independent of temperature."
Date: May 28, 1962
Creator: Dwyer, Orrington Embry, 1912-
System: The UNT Digital Library