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Method for detecting and diagnosing disease caused by pathological protein aggregation

Description: A method is provided for detecting pathological macromolecules in a patient, comprising obtaining body fluid from the patient, pretreating the body fluid, subjecting the pretreated body fluid to size-exclusion chromatography to create an excluded fluid, and analyzing the excluded fluid to detect macromolecules having a predetermined molecular weight. The method also allows for comparing elution spectra with reference spectra of suspect pathologic proteins.
Date: December 31, 1994
Creator: Stevens, F. J.
Partner: UNT Libraries Government Documents Department
open access

Improved electrorefiner

Description: This invention relates to a process and apparatus for electrochemically refining spent nuclear fuel from a nuclear reactor and recovering purified uranium and a mixture of uranium and plutonium for use as fresh blanket and core fuel in a nuclear reactor. An apparatus, capable of functioning as a solid cathode and for removing crystalline structure from the upper surface of a liquid cathode, includes a metallic support vertically disposed with respect to an electrically insulating container capa… more
Date: December 31, 1994
Creator: Miller, W. E. & Tomczuk, Z.
Partner: UNT Libraries Government Documents Department
open access

Superconducting thermoelectric generator

Description: Thermoelectricity is produced by applying a temperature differential to dissimilar electrically conducting or semiconducting materials, thereby producing a voltage that is proportional to the temperature difference. Thermoelectric generators use this effect to directly convert heat into electricity; however, presently-known generators have low efficiencies due to the production of high currents which in turn cause large resistive heating losses. Some thermoelectric generators operate at efficie… more
Date: January 1, 1994
Creator: Metzger, J.D. & El-Genk, M.S.
Partner: UNT Libraries Government Documents Department
open access

Leak checker data logging system

Description: A portable, high speed, computer-based data logging system for field testing systems or components located some distance apart employs a plurality of spaced mass spectrometers and is particularly adapted for monitoring the vacuum integrity of a long string of a superconducting magnets such as used in high energy particle accelerators. The system provides precise tracking of a gas such as helium through the magnet string when the helium is released into the vacuum by monitoring the spaced mass s… more
Date: December 31, 1994
Creator: Payne, J.J. & Gannon, J.C.
Partner: UNT Libraries Government Documents Department
open access

Rapid formation of phase-clean 110 K (Bi-2223) powders derived via freeze-drying process

Description: This invention relates to an improved process of preparing Bi-Sr-Ca-Cu-O (BSCCO) powders, and more particularly, to a process for preparing BSCCO powders that utilize freeze-drying. The process generally includes splat freezing a nitrate solution of Bi, Pb, Sr, Ca, and Cu to form flakes of the solution; grinding the flakes to form a powder; freeze-drying the frozen powder; heating the powder to form dry green precursor powders; denitrating the powders; and heating the powders to form phase-clea… more
Date: December 31, 1994
Creator: Balachandran, Uthamalingam; Krishnaraj, Padmanabhan; Eror, Nicholal G. & Lelovic, Milan
Partner: UNT Libraries Government Documents Department
open access

Improved method for removing metal vapor from gas streams

Description: This invention relates to a process for gas cleanup to remove one or more metallic contaminants present as vapor. More particularly, the invention relates to a gas cleanup process using mass transfer to control the saturation levels such that essentially no particulates are formed, and the vapor condenses on the gas passage surfaces. It addresses the need to cleanup an inert gas contaminated with cadmium which may escape from the electrochemical processing of Integral Fast Reactor (IFR) fuel in… more
Date: September 19, 1994
Creator: Ahluwalia, R. K. & Im, K. H.
Partner: UNT Libraries Government Documents Department
open access

Variable depth core sampler

Description: This invention relates to a sampling means, more particularly to a device to sample hard surfaces at varying depths. Often it is desirable to take samples of a hard surface wherein the samples are of the same diameter but of varying depths. Current practice requires that a full top-to-bottom sample of the material be taken, using a hole saw, and boring a hole from one end of the material to the other. The sample thus taken is removed from the hole saw and the middle of said sample is then subje… more
Date: December 31, 1994
Creator: Bourgeois, P. M. & Reger, R. J.
Partner: UNT Libraries Government Documents Department
open access

System level latchup mitigation for single event and transient radiation effects on electronics

Description: A `blink` technique, analogous to a person blinking at a flash of bright light, is provided for mitigating the effects of single event current latchup and prompt pulse destructive radiation on a micro-electronic circuit. The system includes event detection means, power dump logic means, and energy limiting measures with autonomous recovery. The event detection means includes ionizing radiation pulse detection means for detecting a pulse of ionizing radiation and for providing at an output termi… more
Date: December 31, 1994
Creator: Kimbrough, J.R. & Colella, N.J.
Partner: UNT Libraries Government Documents Department
open access

Process for Extracting Technetium From Alkaline Solutions

Description: This invention relates generally to a process for extracting technetium from nuclear wastes and more particularly to a process for extracting technetium from alkaline waste solutions containing technetium and high concentrations of alkali metal nitrates. A process for extracting technetium values from an aqueous alkaline solution containing at least one alkali metal hydroxide and at least one alkali metal nitrate comprises the steps of: contacting the aqueous alkaline solution with a solvent co… more
Date: December 31, 1994
Creator: Moyer, B. A.; Sachleben, R. A. & Bonnesen, P. V.
Partner: UNT Libraries Government Documents Department
open access

Nuclear resonance tomography with a toroid cavity detector

Description: A toroid cavity detection system for determining the spectral properties and distance from a fixed point for a sample using Nuclear Magnetic Resonance. The detection system consists of a toroid with a central conductor oriented along the main axis of the toroidal cylinder and perpendicular to a static uniform magnetic field oriented along the main axis of the toroid. An rf signal is inputted to the central conductor to produce a magnetic field perpendicular to the central axis of the toroid and… more
Date: December 31, 1994
Creator: Woelk, K.; Rathke, J. W. & Klingler, R. J.
Partner: UNT Libraries Government Documents Department
open access

No moving parts safe and arm apparatus and method with monitoring and built-in-test for optical firing of explosive systems

Description: A laser initiated ordnance controller apparatus which provides a safe and arm scheme with no moving parts. The safe and arm apparatus provides isolation of firing energy to explosive devices using a combination of polarization isolation and control through acousto-optical deviation of laser energy pulses. The apparatus provides constant monitoring of the systems status and performs 100% built-in-test at any time prior to ordnance ignition without the risk of premature ignition or detonation. Th… more
Date: December 31, 1994
Creator: Hendrix, James L.
Partner: UNT Libraries Government Documents Department
open access

Tritium waste package

Description: A containment and waste package system for processing and shipping tritium oxide waste received from a process gas includes an outer drum and an inner drum containing a disposable molecular sieve bed (DMSB) seated within outer drum. The DMSB includes an inlet diffuser assembly, an outlet diffuser assembly, and a hydrogen catalytic recombiner. The DMSB adsorbs tritium oxide from the process gas and converts it to a solid form so that the tritium is contained during shipment to a disposal site. T… more
Date: December 31, 1994
Creator: Rossmassler, R.; Ciebiera, L.; Tulipano, F.J.; Vinson, S. & Walters, R.T.
Partner: UNT Libraries Government Documents Department
open access

New Li-alloy electrode for Li-alloy/metal sulfide cells

Description: The present invention relates to electrodes for use in secondary electrochemical cells. More particularly, it concerns a method of making a negative electrode composition, the electrode composition made thereby and the secondary electrochemical cell containing the electrode, wherein the negative electrode composition includes a lithium alloy including silicon and nickel.
Date: December 31, 1994
Creator: Kaun, T.D.
Partner: UNT Libraries Government Documents Department
open access

Wafer-scale charge isolation technique

Description: An apparatus and method are described which improve the performance of charge-coupled devices (CCD) in the presence of ionizing radiation. The invention is a wafer scale charge isolation technique which inhibits or reduces the flow of electrons created by the passage of ionizing radiation in the bulk regions of a silicon CCD. The technique has been tested in a device designed for operating in the infra-red wavelength band. The technique prevents charge from reaching the active charge collection… more
Date: December 31, 1994
Creator: Colella, N.J. & Kimbrough, J.R.
Partner: UNT Libraries Government Documents Department
open access

Passive infrared bullet detection and tracking

Description: An apparatus and method for passively detecting a projectile such as, for example, a bullet using a passive infrared detector. A passive infrared detector is focused onto a region in which a projectile is expected to be located. Successive images of infrared radiation in the region are recorded. Background infrared radiation present in the region is suppressed such that second successive images of infrared radiation generated by the projectile as the projectile passes through the region are pro… more
Date: December 1994
Creator: Karr, Thomas John
Partner: UNT Libraries Government Documents Department
open access

Ceramic membranes for partial oxygenation of hydrocarbon fuels to high-value-added products

Description: This report describes the design of a membrane reactor for converting methane into value added products. The design includes an outer tube of perovskite which contacts air, an inner tube of zirconium oxide which contacts methane, and a bonding layer of a mixture of zirconium oxide and perovskite.
Date: December 31, 1994
Creator: Balachandran, U.; Dusek, J.T.; Kleefisch, M.S. & Kobylinski, T.P.
Partner: UNT Libraries Government Documents Department
open access

Micromachined Silicon Electrostatic Chuck

Description: In the field of microelectronics, and in particular the fabrication of microelectronics during plasma etching processes, electrostatic chucks have been used to hold silicon wafers during the plasma etching process. Current electrostatic chucks that operate by the {open_quotes}Johnson-Rahbek Effect{close_quotes} consist of a metallic base plate that is typically coated with a thick layer of slightly conductive dielectric material. A silicon wafer of approximately the same size as the chuck is pl… more
Date: December 31, 1994
Creator: Anderson, R. A. & Seager, C. H.
Partner: UNT Libraries Government Documents Department
open access

Biocarrier Composition for and Method of Degrading Pollutants

Description: The present invention relates to biocarrier compositions that attract and bond pollutant-degrading antigens that will degrade the pollutants. Biocarriers are known generally as a variety of inert or semi-inert compounds or structures having the ability to sequester (attract), hold and biomagnify (enhance) specific microorganisms within their structure. Glass or polystyrene beads are the most well known biocarriers. The biocarrier, which is preferably in the form of glass microspheres, is coated… more
Date: January 1, 1994
Creator: Fliermans, Carl B.
Partner: UNT Libraries Government Documents Department
open access

Omni-directional railguns

Description: This invention is comprised of a device for electromagetically accelerating projectiles. The invention features two parallel conducting circular plates, a plurality of electrode connections to both upper and lower plates, a support base, and a projectile magazine. A projectile is spring-loaded into a firing position concentrically located between the parallel plates. A voltage source is applied to the plates to cause current to flow in directions defined by selectable, discrete electrode connec… more
Date: December 31, 1994
Creator: Shahinpoor, M.
Partner: UNT Libraries Government Documents Department
open access

Cermet crucible for metallurgical processing

Description: A cermet crucible for metallurgically processing metals having high melting points comprising a body consisting essentially of a mixture of calcium oxide and erbium metal, the mixture comprising calcium oxide in a range between about 50 and 90% by weight and erbium metal in a range between about 10 and 50% by weight.
Date: December 31, 1994
Creator: Boring, C.P.
Partner: UNT Libraries Government Documents Department
open access

Fiber optic inclination detector system

Description: A fiber optic inclination detector system for determining the angular displacement of an object from a reference surface includes a simple mechanical transducer which requires a minimum number of parts and no electrical components. The system employs a single light beam which is split into two light beams and provided to the transducer. Each light beam is amplitude modulated upon reflecting off the transducer to detect inclination. The power values associated with each of the reflected light be… more
Date: December 31, 1994
Creator: Cwalinski, J.P.
Partner: UNT Libraries Government Documents Department
open access

Process for treating alkaline wastes for vitrification

Description: According to its major aspects and broadly stated, the present invention is a process for treating alkaline waste materials, including high level radioactive wastes, for vitrification. The process involves adjusting the pH of the wastes with nitric acid, adding formic acid (or a process stream containing formic acid) to reduce mercury compounds to elemental mercury and MnO{sub 2} to the Mn(II) ion, and mixing with class formers to produce a melter feed. The process minimizes production of hydro… more
Date: January 1, 1994
Creator: Hsu, Chia-lin W.
Partner: UNT Libraries Government Documents Department
open access

Free form hemispherical shaped charge

Description: A hemispherical shaped charge has been modified such that one side of the hemisphere is spherical and the other is a spherical allowing a wall thickness variation in the liner. A further modification is to use an elongated hemispherical shape. The liner has a thick wall at its pole and a thin wall at the equator with a continually decreasing wall thickness from the pole to the equator. The ratio of the wall thickness from the pole to the equator varies depending on liner material and HE shape. … more
Date: December 31, 1994
Creator: Haselman, Leonard C., Jr.
Partner: UNT Libraries Government Documents Department
open access

Hot cell shield plug extraction apparatus

Description: A hot cell installation for the handling of highly radioactive material may comprise a dozen or more interconnected high density concrete vaults, the concrete vault walls having a thickness of approximately three feet. Typically, hot cells are constructed in rows so as to share as many shielding walls as possible. A typical overall length of a row of cells might be 70 yards. A secondary mechanism exists for placing certain objects into a cell. A typical hot cell has been constructed with 8 inch… more
Date: December 31, 1994
Creator: Knapp, Philip A. & Manhart, Larry K.
Partner: UNT Libraries Government Documents Department
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