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open access

Self-actuating reactor-shutdown system. [LMFBR]

Description: A control system for the automatic or self-actuated shutdown or scram of a nuclear reactor is described. The system is capable of initiating scram insertion by a signal from the plant protection system or by independent action directly sensing reactor conditions of low-flow or over-power. Self-actuation due to a loss of reactor coolant flow results from a decrease of pressure differential between the upper and lower ends of an absorber element. When the force due to this differential falls belo… more
Date: June 4, 1981
Creator: Barrus, D.M.; Brummond, W.A. & Peterson, L.F.
Partner: UNT Libraries Government Documents Department
open access

Thermionic switched self-actuating reactor shutdown system

Description: A self-actuating reactor shutdown system is described which has a thermionic switched electromagnetic latch arrangement which is responsive to reactor neutron flux changes and to reactor coolant temperature changes. The system is self-actuating in that the sensing thermionic device acts directly to release (scram) the control rod (absorber) without reference or signal from the main reactor plant protective and control systems. To be responsive to both temperature and neutron flux effects, two d… more
Date: June 4, 1981
Creator: Barrus, Donald M.; Shires, Charles D. & Brummond, William A.
Partner: UNT Libraries Government Documents Department
open access

Chemotactic selection of pollutant degrading soil bacteria

Description: A method is described for identifying soil microbial strains which may be bacterial degraders of pollutants. This method includes: Placing a concentration of a pollutant in a substantially closed container; placing the container in a sample of soil for a period of time ranging from one minute to several hours; retrieving the container and collecting its contents; microscopically determining the identity of the bacteria present. Different concentrations of the pollutant can be used to determine … more
Date: March 4, 1991
Creator: Hazen, T. C.
Partner: UNT Libraries Government Documents Department
open access

Plasma Synthesis of Lithium Based Intercalation Powders for Solid Polymer Electrolyte Batteries

Description: The invention relates to a process for preparing lithium intercalation compounds by plasma reaction comprising the steps of: forming a feed solution by mixing lithium nitrate or lithium hydroxide or lithium oxide and the required metal nitrate or metal hydroxide or metal oxide and between 10-50% alcohol by weight; mixing the feed solution with O2 gas wherein the O2 gas atomizes the feed solution into fine reactant droplets, inserting the atomized feed solution into a plasma reactor to form an i… more
Date: January 4, 2005
Creator: Kong, Peter C.; Pink, Robert J. & Nelson, Lee O.
Partner: UNT Libraries Government Documents Department
open access

Optical transcutaneous bilirubin detector

Description: This invention consists of a transcutaneous bilirubin detector comprising a source of light having spectral components absorbable and not absorbable by bilirubin, a handle assembly, electronic circuitry and a fiber optic bundle connecting the assembly to the light source and circuitry. Inside the assembly is a prism that receives the light from one end of the fiber optic bundle and directs it onto the skin and directs the reflected light back into the bundle. The other end of the bundle is trif… more
Date: March 4, 1991
Creator: Kronberg, J. W.
Partner: UNT Libraries Government Documents Department
open access

Narrow groove welding gas diffuser assembly and welding torch

Description: A diffuser assembly is provided for narrow groove welding using an automatic gas tungsten arc welding torch. The diffuser assembly includes manifold adapted for adjustable mounting on the welding torch which is received in a central opening in the manifold. Laterally extending manifold sections communicate with a shield gas inlet such that shield gas supplied to the inlet passes to gas passages of the manifold sections. First and second tapered diffusers are respectively connected to the manifo… more
Date: February 4, 2000
Creator: Rooney, Stephen J.
Partner: UNT Libraries Government Documents Department
open access

Statistically Qualified Neuro-Analytic system and Method for Process Monitoring

Description: An apparatus and method for monitoring a process involves development and application of a statistically qualified neuro-analytic (SQNA) model to accurately and reliably identify process change. The development of the SQNA model is accomplished in two steps: deterministic model adaption and stochastic model adaptation. Deterministic model adaption involves formulating an analytic model of the process representing known process characteristics,augmenting the analytic model with a neural network … more
Date: November 4, 1998
Creator: Vilim, Richard B.; Garcia, Humberto E. & Chen, Frederick W.
Partner: UNT Libraries Government Documents Department
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