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Plutonium Release Incident at Oak Ridge National Laboratory

Description: A nonnuclear explosion involving an evaporator occurred in a shielded cell in the Radiochemical Processing Pilot plant at Oak Ridge National Laboratory. Plutonium released from the processing cell contaminated areas in the pilot plant building and nearby streets and building surfaces. The explosion is considered the result of rapid reaction of nitrated organic compounds formed by the inadvertent nitration of about 14 liters of a proprietary decontaminating reagent.
Date: January 10, 1961
Creator: King, L. J. & Bresee. J. C.
Partner: UNT Libraries Government Documents Department
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Radial Vibrations in Short, Hollow Cylinders of Barium Titanate

Description: The mathematics has been developed for the determination of the radial coupling coefficient for a hollow cylinder of electro-strictive material whose length is small compared to its outside diameter.
Date: December 10, 1954
Creator: Stephenson , C. V.
Partner: UNT Libraries Government Documents Department
open access

Frequency Components of a Step Function and a Sinusoid

Description: Fourier analyses are made on two functions. The first is a step function forward from periodic samples of a sinusoid. If the frequency of the sinusoid is less than one-half of the sampling frequency, it is shown that the step function has no frequency components less than one-half of the sampling frequency other than that of phase, and duration with respect to the interval of the analysis. It is shown that the insertion of a blank space in the period of analysis reduces greatly the uncertainty … more
Date: May 10, 1955
Creator: McGehee, R. M.
Partner: UNT Libraries Government Documents Department
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A Human Engineering Guide to the Arrangement of Elements on a Control Panel

Description: This memorandum is a compilation of general information concerned with the arrangement of elements on a control panel. Arrangement considerations that lead to to improved ease and accuracy of operation are presented to assist the engineer in designing new control panels.
Date: December 10, 1954
Creator: Williams, H. L.
Partner: UNT Libraries Government Documents Department
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[Mentor Review of Art Classroom at Shady Brook School by Mentor Stephens]

Description: A document presents an insightful review conducted by Mentor Stephens on the Art classroom at Shady Brook School. Mentor Stephens evaluates the classroom environment, teaching methodologies, and overall effectiveness of the art education program.
Date: September 10, 1999
Partner: UNT Libraries Special Collections
open access

[Change in Recommended Schools for Annenberg Arts Partner Schools]

Description: A comprehensive document shedding light on the intricacies of the change in recommended schools. Accompanied by an attached document outlining the revised recommendations for Annenberg Arts Partner Schools, this detailed report provides insights into the considerations, rationale, and strategic adjustments made in the selection process.
Date: February 10, 1997
Partner: UNT Libraries Special Collections
open access

Meat and Poultry Inspection Issues

Description: This report discusses the U.S. Department of Agriculture's (USDA's) Food Safety and Inspection Service (FSIS) responsibility for inspecting most meat, poultry, and processed egg products for safety, wholesomeness, and proper labeling while detailing the results of congressional action in reducing the presence of pathogens and food-borne illness in facilities and food products.
Date: January 10, 2003
Creator: Rawson, Jean M.
Partner: UNT Libraries Government Documents Department
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Iran: U.S. Concerns and Policy Responses

Description: Report discussing measures that can be put in place to limit Iran's development of nuclear weaponry. The report also highlights major concerns surrounding Iran's human rights practices, strict limits on democracy, and connections to Islamic extremist groups who openly oppose the U.S.-led Middle East peace process.
Date: March 10, 2006
Creator: Katzman, Kenneth
Partner: UNT Libraries Government Documents Department
open access

Plasma Accumulation in a Device Fed by Energetic Ion Trapping

Description: Simon (1960) has given a general steady state theory of plasma accumulation (without energy losses) in an OGRA device. Such a device is fed by injection of energetic molecular ions which dissociate to produce trapped protons. Initial trapping is achieved by dissociation in the background gas. Such a device is usually characterized by a critical input current of critical plasma density (a function of input current) above which plasma density builds up to a value limited by Coulomb-scattering los… more
Date: November 10, 1960
Creator: Mackin, R. J., Jr.
Partner: UNT Libraries Government Documents Department
open access

Delay Time Prior to Dumping the HRT

Description: Some refined calculations have been made, relative to a proposed delay prior to a dump, to determine the expected D2 concentration in the vent stream from the pressurizer gas bleeds during a dump of the Homogeneous Reactor Test (HRT). These calculations indicate that for vent valves have a Cv of 0.07 (venting time from 2000 psia to D2O saturation pressure of approximately 12 minutes), a delay period is not required since the D2 concentration is well below lower explosive limit. For vent valves … more
Date: January 10, 1957
Creator: Gift, E. H. & McLain, Howard A.
Partner: UNT Libraries Government Documents Department
open access

Thorium oxide Slurry Falling Ball Viscometer : Final Co-op Report, Winter, 1957

Description: A falling ball viscometer under development at ORNL, employing a flow system and an electromagnetically operated dash-pot pump, was evaluated for possible use with aqueous ThO2 slurry systems under reactor irradiation. Interchangeable check valve inserts were designed and fabricated to investigate several pump designs. Magnetic flux concentrations which originally prevented circulation of the ferritic stainless steel viscometer ball through the electromagnetic pump were eliminated by substituti… more
Date: April 10, 1957
Creator: Novak, P. E.
Partner: UNT Libraries Government Documents Department
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Effect of Slurry Physical Properties on Heat Exchangers and Pump Characteristics

Description: Design calculations were made for a system consisting of a pump, one hundred feet of pipe, and a heat exchanger to remove 1 Mw of heat from various aqueous thorium oxide slurries. The rheological properties of the slurries were varied over a range of yield stresses from 0 to 1.5 lb/sq ft and of coefficients of rigidity from 1/2 to 2 centipoise. Two different cases were studied: a heat exchanger having fixed axial and radial delta T in which the tube length was allowed to vary and a heat exchang… more
Date: June 10, 1957
Creator: Thomas, D. G.
Partner: UNT Libraries Government Documents Department
open access

Nuclear Computations for HRE-3 Design : Equilibrium Results

Description: Various nuclear characteristics of two-region spherical homogeneous reactors have been computed in order to provide information for the design of HRE-3. Equilibrium isotope concentrations were established using an ORACLE code, and a two-group model was used to obtain critical concentrations and flux distributions. Breeding ratio is plotted as a function of reactor size, blanket thorium concentration, and other design and operating parameters, and the time required for a demonstration breeding i… more
Date: July 10, 1957
Creator: Rosenthal, M. W. & Fowler, T. B.
Partner: UNT Libraries Government Documents Department
open access

Summary of the 2018 White House Summit on Artificial Intelligence for American Industry

Description: This report summarizes the 2018 White House Summit on Artificial Intelligence for American Industry, where over 100 senior government officials, technical experts from top academic institutions, head of industrial research labs and American business leaders who are adopting AI technologies to benefit their customers, workers, and shareholders converged.
Date: May 10, 2018
Creator: United States. Office of Science and Technology Policy.
Partner: UNT Libraries Government Documents Department
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