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Toroidal magnetic detector for high resolution measurement of muon momenta

Description: A muon detector system including central and end air-core superconducting toroids and muon detectors enclosing a central calorimeter/detector are described in this paper. Muon detectors are positioned outside of toroids and all muon trajectory measurements are made in a nonmagnetic environment. Internal support for each magnet structure is provided by sheets, located at frequent and regularly spaced azimuthal planes, which interconnect the structural walls of the toroidal magnets. In a preferre… more
Date: November 30, 1990
Creator: Bonanos, P.
Partner: UNT Libraries Government Documents Department
open access

Halogenated high {Tc} superconductors and method of preparation

Description: Disclosed is a method for producing a superconductor of the R-Ba-Cu-O system which comprises of selecting an insulating material of the formula RBa{sub x}Cu{sub y}O{sub z} where R is selected from the group consisting of Y, La, Pr, Nd, Sm, Eu, Gd, Ho, Er, Tm, and Lu, and where x ranges from about 1.7 to about 2.3, y ranges from about 2.7 to about 3.3 and z ranges from about 5.0 to about 6.99, and halogenating said material with a halogen selected from the group consisting of chlorine, bromine, … more
Date: November 14, 1990
Creator: Radousky, H. B.; Glass, R. S. & Fluss, M. J.
Partner: UNT Libraries Government Documents Department
open access

Oxidation resistant alloys, method for producing oxidation resistant alloys

Description: A method for producing oxidation-resistant austenitic alloys for use at temperatures below 800 C. comprising of: providing an alloy comprising, by weight %: 14-18% chromium, 15-18% nickel, 1-3% manganese, 1-2% molybdenum, 2-4% silicon, 0% aluminum and the balance being iron; heating the alloy to 800 C. for between 175-250 hours prior to use in order to form a continuous silicon oxide film and another oxide film. The method provides a means of producing stainless steels with superior oxidation r… more
Date: November 5, 2002
Creator: Dunning, John S. & Alman, David E.
Partner: UNT Libraries Government Documents Department
open access

Use of Phosphates to Reduce Slag Penetration in CR203-Based Refractories

Description: A high-chromium refractory material that provides improved resistance to coal slag penetration is presented. The refractory mixture comprises a blend of chromium oxide, aluminum oxide and phosphates. The refractory mixture may be blended with an aggregate and cured. In addition a phosphorus oxide may be blended with chromium oxide and aluminum oxide and additionally an aggregate. The refractory mixture reduces the rate of coal slag penetration into the surface of the cured refractory.
Date: November 9, 2004
Creator: Kwong, Kyei-Sing; Dogan, Cynthia P.; Bennett, James P.; Chinn, Richard E. & Petty, Arthur V.
Partner: UNT Libraries Government Documents Department
open access

Closure Mechanism and Method for Spent Nuclear Fuel Canisters

Description: A canister is provided for storing, transporting, and/or disposing of spent nuclear fuel. The canister includes a canister shell, a top shield plug disposed within the canister, and a leak-tight closure arrangement. The closure arrangement includes a shear ring which forms a containment boundary of the canister, and which is welded to the canister shell and top shield plug. An outer seal plate, forming an outer seal, is disposed above the shear ring and is welded to the shield plug and the cani… more
Date: November 23, 2004
Creator: Doman, Marvin J.
Partner: UNT Libraries Government Documents Department
open access

Method of preparing high-temperature-stable thin-film resistors

Description: A chemical vapor deposition method for manufacturing tungsten-silicide thin-film resistors of predetermined bulk resistivity and temperature coefficient of resistance (TCR) is disclosed. Gaseous compounds of tungsten and silicon are decomposed on a hot substrate to deposit a thin-film of tungsten-silicide. The TCR of the film is determined by the crystallinity of the grain structure, which is controlled by the temperature of deposition and the tungsten to silicon ratio. The bulk resistivity is … more
Date: November 12, 1980
Creator: Raymond, L. S.
Partner: UNT Libraries Government Documents Department
open access

Method for Synthesizing Extremeley High Temperature Melting Materials

Description: The invention relates to a method of synthesizing high-temperature melting materials. More specifically the invention relates to a containerless method of synthesizing very high temperature melting materials such as borides, carbides and transition-metal, lanthanide and actinide oxides, using an Aerodynamic Levitator and a laser. The object of the invention is to provide a method for synthesizing extremely high-temperature melting materials that are otherwise difficult to produce, without the u… more
Date: November 22, 2005
Creator: Saboungi, Marie-Louise and Glorieux, Benoit
Partner: UNT Libraries Government Documents Department
open access

Systems and Methods for Integrated Emissivity and Temperature Measurement of a Surface

Description: A multi-channel spectrometer and a light source are used to measure both the emitted and the reflected light from a surface which is at an elevated temperature relative to its environment. In a first method, the temperature of the surface and emissivity in each wavelength is calculated from a knowledge of the spectrum and the measurement of the incident and reflected light. In the second method, the reflected light is measured from a reference surface having a known reflectivity and the same ge… more
Date: November 8, 2005
Creator: Poulsen, Peter
Partner: UNT Libraries Government Documents Department
open access

Ultrasound Analysis of Slurries

Description: An autoclave reactor allows for the ultrasonic analysis of slurry concentration and particle size distribution at elevated temperatures and pressures while maintaining the temperature- and pressure-sensitive ultrasonic transducers under ambient conditions. The reactor vessel is a hollow stainless steel cylinder containing the slurry which includes a stirrer and a N, gas source for directing gas bubbles through the slurry. Input and output transducers are connected to opposed lateral portions of… more
Date: November 1, 2005
Creator: Soong, Yee and Blackwell, Arthur G.
Partner: UNT Libraries Government Documents Department
open access

Use of Microwaves to Crosslink Carbon Nanotubes

Description: Patent relating to the use of microwaves to crosslink carbon nanotubes.
Date: November 11, 2004
Creator: Tour, James M.; Stephenson, Jason J.; Imholt, Timothy; Dyke, Christopher A.; Yakobson, Boris I. & Roberts, James A.
Partner: UNT College of Arts and Sciences
open access

Method of Evaluating, Expanding, and Collapsing Connectivity Regions Within Dynamic Systems

Description: An automated process defines and maintains connectivity regions within a dynamic network. The automated process requires an initial input of a network component around which a connectivity region will be defined. The process automatically and autonomously generates a region around the initial input, stores the region's definition, and monitors the network for a change. Upon detecting a change in the network, the effect is evaluated, and if necessary the regions are adjusted and redefined to acc… more
Date: November 16, 2004
Creator: Bailey, David A.
Partner: UNT Libraries Government Documents Department
open access

Method for chemically analyzing a solution by acoustic means

Description: A method and apparatus are described for determining a type of solution and the concentration of that solution by acoustic means. Generally stated, the method consists of: immersing a sound focusing transducer within a first liquid filled container; locating a separately contained specimen solution at a sound focal point within the first container; locating a sound probe adjacent to the specimen, generating a variable intensity sound signal from the transducer; measuring fundamental and multipl… more
Date: November 1995
Creator: Beller, L. S.
Partner: UNT Libraries Government Documents Department
open access

Method and Apparatus for Monitoring the Integrity of a Geomembrane Liner using time Domain Reflectometry

Description: Leaks are detected in a multi-layered geomembrane liner by a two-dimensional time domain reflectometry (TDR) technique. The TDR geomembrane liner is constructed with an electrically conductive detection layer positioned between two electrically non-conductive dielectric layers, which are each positioned between the detection layer and an electrically conductive reference layer. The integrity of the TDR geomembrane liner is determined by generating electrical pulses within the detection layer an… more
Date: November 9, 1998
Creator: Morris, John L.
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
open access

Directly Susceptible, Noncarbon Composite Crucible

Description: A sintered metal ceramic crucible suitable for high temperature induction melting of reactive metals without appreciable carbon or silicon contamination of the melt. The crucible comprises a cast matrix of a thermally conductive ceramic material; a perforated metal sleeve, which serves as a susceptor for induction heating of the crucible, embedded within the ceramic cast matrix; and a thermal-shock-absorber barrier interposed between the metal sleeve and the ceramic cast matrix to allow for dif… more
Date: November 25, 1998
Creator: Holcombe, Cressie E., Jr.; Kiggans, James O., Jr.; Morrow, S. Marvin & Rexford, Donald
Partner: UNT Libraries Government Documents Department
open access

Planar fuel cell utilizing nail current collectors for increased active surface area

Description: A plurality of nail current collector members are useful in the gas flow passages of an electrochemical device to optimize the active surfaces of the device and to provide structural support. In addition, the thicknesses of cathode and anode layers within the electrochemical device are varied according to current flow through the device to reduce resistance and increase operating efficiency.
Date: November 26, 1999
Creator: George, Thomas J. & Meacham, G.B. Kirby
Partner: UNT Libraries Government Documents Department
open access

Method and Apparatus for measuring Gravitational Acceleration Utilizing a high Temperature Superconducting Bearing

Description: Gravitational acceleration is measured in all spatial dimensions with improved sensitivity by utilizing a high temperature superconducting (HTS) gravimeter. The HTS gravimeter is comprised of a permanent magnet suspended in a spaced relationship from a high temperature superconductor, and a cantilever having a mass at its free end is connected to the permanent magnet at its fixed end. The permanent magnet and superconductor combine to form a bearing platform with extremely low frictional losses… more
Date: November 6, 1998
Creator: Hull, John R.
Partner: UNT Libraries Government Documents Department
open access

New silicotitanate molecular sieve and condensed phases

Description: This patent application relates to an invention for a new silicotitanate molecular sieve ion exchange material for the capture and immobilization of divalent cations from aqueous and/or hydrocarbon solutions, including elements such as radioactive strontium or industrial RCRA metal cations. The invention also relates to the ability to either recycle the captured metal for future use or to encapsulate the cation through thermal treatment of the molecular sieve to a condensed phase.
Date: November 1, 2000
Creator: Nenoff, Tina M. & Nyman, May D.
Partner: UNT Libraries Government Documents Department
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