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Kinetic and Thermochemical Studies of the Recombination Reaction Na + O₂ + N₂ from 590 to 1515 K by a Modified High-Temperature Photochemistry Technique

Description: Article on kinetic and thermochemical studies of the recombination reaction sodium + oxygen + nitrogen from 590 to 1515 K by a modified high-temperature photochemistry technique.
Date: September 1, 1989
Creator: Marshall, Paul & Narayan, A. S.
Partner: UNT College of Arts and Sciences

The Passage of Sodium-24 and Rubidium-86 Across the Blood-Brain Barrier System of Canines at Low Body Temperatures

Description: To evaluate the blood-brain barrier system in the pathogenesis of an irreversible hypothermic state in dogs, concentrations of 2 4 Na and 86Rb were measured at body temperatures ranging from 37 0 C to 160 C. A suppression of transport of sodium was demonstrated, followed by an increase as the temperature was lowered. The concentration of rubidium ion increased in concentration as the temperature fell. These data indicate there may be a temperature threshold below which the blood-brain barrier system fails to maintain the internal environment of the central nervous system. The intimate relationship of several brain stem nuclei with the cerebro-spinal fluid indicates they may be at risk during profound cooling.
Date: May 1976
Creator: Burgess, Michael Clifton
Partner: UNT Libraries

Variational Wave Function for Sodium

Description: The practical method of applying the variation principle to the calculation of the energy of an atom demands a trial function which contains variable parameters. The previous work done using this approach was based on the use of some combination of hydrogenic wave functions containing parameters inserted in appropriate places. The present calculation of the energy of the eleven-electron atom has been brought about using this method.
Date: August 1953
Creator: Smith, Daniel Montague
Partner: UNT Libraries

A Comparative Quantitative Study of the Common Elements Found in the Post Oak and Willow

Description: This thesis explores the chemical contents of post oak and willow trees. Samples of each tree are compared to determine the amount of sulfur, phosphorus, potassium, sodium, silicon, iron, aluminum, calcium, magnesium, and manganese in them. Results indicated usefulness of each tree to humans.
Date: August 1939
Creator: Clark, James L.
Partner: UNT Libraries