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
A Hanford Works Vacuum System (open access)

A Hanford Works Vacuum System

The remodeling, fabrication, and instrumentation of a high vacuum system are described. The faults encountered with the old system and their solution are outlined. Tests were made on diffusion pump oils and on the reduction of pump oil back diffusion. The measurement of high vacuum pressures by a cold cathode ionization gage at various points on a vacuum system are discussed.
Date: May 28, 1953
Creator: Holdreth, N. T.
System: The UNT Digital Library
Remarks on Reactivity Control in Light Water Moderated Reactors (open access)

Remarks on Reactivity Control in Light Water Moderated Reactors

Report discussing the effects of thermal diffusion length and certain details in the design of light water moderated reactors and their effect on reactivity.
Date: May 28, 1953
Creator: Stoker, R. L.
System: The UNT Digital Library
High Energy Proton Spallation--Fission of Uranium (open access)

High Energy Proton Spallation--Fission of Uranium

The fission and spallation reactions caused in uranium by bombardment with high energy protons (340 to 350 Mev) were investigated. The reaction products were separated from the target by chemical processes and identified by their radioactive properties. The relative yields of the observed fission products were measured, and the results plotted as a function of mass number. Several of the spallation products were identified and their yields estimated.
Date: May 28, 1951
Creator: Folger, R. L.; Stevenson, P. C. & Seaborg, Glenn T. (Glenn Theodore), 1912-1999
System: The UNT Digital Library
Determination of Uranium by Fluorescence (open access)

Determination of Uranium by Fluorescence

Abstract: "The uranium content of badly contaminated uranium solutions may be determined quickly using visual comparison methods to an accuracy of [...]. This accuracy may be considerably improved by employing the fluorimeter herein described. Interfering ions and their removal using liquid-liquid extractions are considered."
Date: May 28, 1948
Creator: Grimes, W. R. & Clark, F. E.
System: The UNT Digital Library
Tentative Procedures for Analysis of HCP Process Materials (open access)

Tentative Procedures for Analysis of HCP Process Materials

Abstract: The procedures recommended for analysis in Department 190 Laboratories, in the Limits Control Laboratory, and in the Analytical Development Laboratories, of all process materials from the HCP cycle are presented in a stepwise manner. A description of the characteristics of each sample type along with a brief description of factors involved in the Analytical Quality Control program is included.
Date: May 28, 1947
Creator: Belknap, Herbert J.; Nessle, G. J. & Grimes, W. R.
System: The UNT Digital Library
The Conversion of UF4 to U3Os (open access)

The Conversion of UF4 to U3Os

Methods of conversion of UF4 to U3O8 by fusion with ammonium oxalate dihydrate and other salts are described.
Date: May 28, 1941
Creator: Tevebaugh, A. D.; Tevebaugh, R. D.; Cline, W. D. & Warf, James C.
System: The UNT Digital Library