Resource Type

633 Matching Results

Results open in a new window/tab.

Graphene Magnetic Tunnel Junction Spin Filters and Methods of Making (open access)

Graphene Magnetic Tunnel Junction Spin Filters and Methods of Making

Patent relating to methods of forming a few molecule thick graphene layer on a ferromagnetic layer, at temperatures and conditions consistent with integration with silicon-based complementary metal oxide semiconductors (Si CMOS).
Date: May 25, 2012
Creator: Kelber, Jeffry A. & Zhou, Mi
System: The UNT Digital Library
Methods and Systems for Indoor Navigation (open access)

Methods and Systems for Indoor Navigation

Patent relating to methods and systems for indoor navigation.
Date: October 13, 2011
Creator: Dantu, Ram
System: The UNT Digital Library
Impact Resistant Flexible Body Device (open access)

Impact Resistant Flexible Body Device

Patent relating to an impact resistant device that can be worn as body armor to protect the wearer from high velocity projectiles.
Date: August 13, 2008
Creator: Biermann, Paul J.; Roberts, Jack C. & Reidy, Richard F.
System: The UNT Digital Library
Method and Apparatus for Atomizing Fluids with a Multi-Fluid Nozzle (open access)

Method and Apparatus for Atomizing Fluids with a Multi-Fluid Nozzle

The invention relates to a method and apparatus for atomizing liquids. In particular, the present invention relates to a method and apparatus for atomizing heavy hydrocarbon fuels such as diesel, as part of a fuel reforming process. During normal operating conditions the fuel is atomized by a high pressure fluid. Under start-up conditions when only a low pressure gas is available the fuel films across part of the nozzle and is subsequently atomized by a radially directed low pressure dispersion gas.
Date: December 7, 2004
Creator: Novick, Vincent J. & Ahluwalia, Rajesh K.
System: The UNT Digital Library
Method for Generating Numerical Values Indicative of Frequencies of Selected Features in Objects, and a Computer System Implementing the Method (open access)

Method for Generating Numerical Values Indicative of Frequencies of Selected Features in Objects, and a Computer System Implementing the Method

Patent relating to methods for generating numerical values indicative of frequencies of selected features in objects, and a computer system implementing the method.
Date: November 21, 2001
Creator: Rorvig, Mark E. & Jeong, Kitai
System: The UNT Digital Library
Novel Solvent for the Simultaneous recovery of Radioactive Nuclides from Liquid Radioactive Wastes (open access)

Novel Solvent for the Simultaneous recovery of Radioactive Nuclides from Liquid Radioactive Wastes

The present invention relates to solvents, and methods, for selectively extracting and recovering radionuclides, especially cesium and strontium, rare earths and actinides from liquid radioactive wastes. More specifically, the invention relates to extracting agent solvent compositions comprising complex organoboron compounds, substituted polyethylene glycols, and neutral organophosphorus compounds in a diluent. The preferred solvent comprises a chlorinated cobalt dicarbollide, diphenyl-dibutylmethylenecarbamoylphosphine oxide, PEG-400, and a diluent of phenylpolyfluoroalkyl sulfone. The invention also provides a method of using the invention extracting agents to recover cesium, strontium, rare earths and actinides from liquid radioactive waste.
Date: October 7, 1999
Creator: Romanovskiy, Valeriy Nicholiavich; Smirnov, Lgor V.; Babain, Vasiliy A.; Todd, Terry A. & Brewer, Ken N.
System: The UNT Digital Library
Iron-Phosphate Ceramics for Solidification of Mixed Low-Level Waste (open access)

Iron-Phosphate Ceramics for Solidification of Mixed Low-Level Waste

A method of immobilizing mixed low-level waste is provided which uses low cost materials and has a relatively long hardening period. The method includes: forming a mixture of iron oxide powders having ratios, in mass %, of FeO: Fe{sub 2}O{sub 3}: Fe{sub 3}O{sub 4} equal to 25-40: 40-10: 35-50, or weighing a definite amount of magnitite powder. Metallurgical cinder can also be used as the source of iron oxides. A solution of the orthophosphoric acid, or a solution of the orthophosphoric acid and ferric oxide, is formed and a powder phase of low-level waste and the mixture of iron oxide powders or cinder (or magnetite powder) is also formed. The acid solution is mixed with the powder phase to form a slurry with the ratio of components (mass %) of waste: iron oxide powders or magnitite: acid solution = 30-60: 15-10: 55-30. The slurry is blended to form a homogeneous mixture which is cured at room temperature to form the final product.
Date: August 7, 1998
Creator: Aloy, Albert S.; Kovarskaya, Elena N.; Koltsova, Tatiana I.; Macheret, Yevgeny; Medvedev, Pavel G. & Todd, Terry
System: The UNT Digital Library
Hydride compositions (open access)

Hydride compositions

Disclosed are a composition for use in storing hydrogen and a method for making the composition. The composition comprises a mixture of two or more hydrides, each hydride having a different series of hydrogen sorption isotherms that contribute to the overall isotherms of the mixture. The hydrides are chosen so that the isotherms of the mixture have regions wherein the H equilibrium pressure increases with increasing hydrogen, preferably linearly. The isotherms of the mixture can be adjusted by selecting hydrides with different isotherms and by varying the amounts of the individual hydrides, or both. Preferably, the mixture is made up of hydrides that have isotherms with substantially flat plateaus and in nearly equimolar amounts. The composition is activated by degassing, exposing to H, and then heating below the softening temperature of any of the constituents. When the composition is used to store hydrogen, its hydrogen content can be found simply by measuring P{sub H}{sub 2} and determining H/M from the isothermic function of the composition.
Date: February 7, 1994
Creator: Lee, Myung W.
System: The UNT Digital Library
Process for strengthening silicon based ceramics (open access)

Process for strengthening silicon based ceramics

A process for strengthening silicon based ceramic monolithic materials and composite materials that contain silicon based ceramic reinforcing phases that requires that the ceramic be exposed to a wet hydrogen atmosphere at about 1400{degrees}C. The process results in a dense, tightly adherent silicon containing oxide layer that heals, blunts, or otherwise negates the detrimental effect of strength limiting flaws on the surface of the ceramic body.
Date: March 7, 1991
Creator: Kim, Hyoun-Ee & Moorhead, A. J.
System: The UNT Digital Library
Actinide halide complexes (open access)

Actinide halide complexes

A compound of the formula MX{sub n}L{sub m} wherein M = Th, Pu, Np,or Am thorium, X = a halide atom, n = 3 or 4, L is a coordinating ligand selected from the group consisting of aprotic Lewis bases having an oxygen-, nitrogen-, sulfur-, or phosphorus-donor, and m is 3 or 4 for monodentate ligands or is 2 for bidentate ligands, where n + m = 7 or 8 for monodentate ligands or 5 or 6 for bidentate ligands, a compound of the formula MX{sub n} wherein M, X, and n are as previously defined, and a process of preparing such actinide metal compounds including admixing the actinide metal in an aprotic Lewis base as a coordinating solvent in the presence of a halogen-containing oxidant, are provided.
Date: February 7, 1991
Creator: Avens, Larry R.; Zwick, Bill D.; Sattelberger, Alfred P.; Clark, David L. & Watkin, J. G.
System: The UNT Digital Library
A method of genetically engineering acidophilic, heterotrophic, bacteria by electroporation and conjugation (open access)

A method of genetically engineering acidophilic, heterotrophic, bacteria by electroporation and conjugation

A method of genetically manipulating an acidophilic bacteria is provided by two different procedures. Using electroporation, chimeric and broad-host range plasmids are introduced into Acidiphilium. Conjugation is also employed to introduce broad-host range plasmids into Acidiphilium at neutral pH.
Date: August 7, 1990
Creator: Roberto, F. F.; Glenn, A. W. & Ward, T. E.
System: The UNT Digital Library
Processing method for superconducting ceramics (open access)

Processing method for superconducting ceramics

A process for preparing a superconducting ceramic and particularly YBa{sub 2}Cu{sub 3}O{sub 7-{delta}}, where {delta} is in the order of about 0.1--0.4, is carried out using a polymeric binder which decomposes below its ignition point to reduce carbon residue between the grains of the sintered ceramic and a nonhydroxylic organic solvent to limit the problems with water or certain alcohols on the ceramic composition.
Date: May 7, 1990
Creator: Bloom, I. D.; Poeppel, R. B. & Flandermeyer, B. K.
System: The UNT Digital Library
Hyper filter-fluorescer spectrometer for x rays above 120 keV (open access)

Hyper filter-fluorescer spectrometer for x rays above 120 keV

An apparatus utilizing filter-fluorescer combinations is provided to measure short bursts of high fluence x-rays above 120 keV energy, where there are no practical absorption edges available for conventional filter-fluorescer techniques. The absorption edge of the prefilter is chosen to be less than that of the fluorescer, i.e., E/sub PRF/ < E/sub F/, contrary to the prior art technique E/sub PRF/ > E/sub F/. In this way, the response function is virtually zero between E/sub PRF/ and E/sub F/ and well defined and enhanced in an energy band of less than 1000 keV above the 120 keV energy.
Date: July 7, 1981
Creator: Wang, C. L.
System: The UNT Digital Library
Magnetic testing probe (open access)

Magnetic testing probe

A cylindrical eddy current tube testing probe is disclosed. Current flow in dual electromagnetic coils separated by an eddy current sensing coil is so directed that magnetic fields of the electromagnet coils have components extending in opposite directions axially of the tested tube and components extending radially of the tube which add in the region of the eddy current sensing coil.
Date: July 7, 1981
Creator: Scott, G.W. & Chitwood, L.D.
System: The UNT Digital Library
Combined Feeder and Hive Ventilator (open access)

Combined Feeder and Hive Ventilator

Patent for improvements in bee-hives by providing means in which the hive can be ventilated during warm weather. The invention provides means in which the ventilating means can be removed or rendered inoperative whenever desired or during cold weather.
Date: November 7, 1922
Creator: Heim, Charles; Heim, Emil R.; Heim, Clarence C. & Heim, Edwin C.
System: The Portal to Texas History
Dirigible Headlight Construction for Automobiles. (open access)

Dirigible Headlight Construction for Automobiles.

Patent for improvements in dirigible headlight constructions for automobiles. Two major useful improments are mentioned: a) a headlight that is constructed so that when a car turns, the headlight on the turning side of the car will alone be turned in the same direction and b) a headlight that is constructed so that the driver can manually turn either headlight, allowing the headlights to act as search lights if necessary.
Date: November 7, 1922
Creator: Ross, Maxwell
System: The Portal to Texas History
Gasoline Wash Furnace (open access)

Gasoline Wash Furnace

Patent for a gasoline wash furnace designed for use in heating water for clothea
Date: November 7, 1922
Creator: Adams, James V.
System: The Portal to Texas History
Hosiery Spat. (open access)

Hosiery Spat.

Patent for hosiery spat that provides feet and ankle "protection when fancy 'open work' or thin hosiery is worn." (lines 15-16) including illustrations.
Date: November 7, 1922
Creator: von S.S. Blum, Elisa
System: The Portal to Texas History
Locomotive Wheel Hub and Plate (open access)

Locomotive Wheel Hub and Plate

Patent for improvements to locomotive wheel hubs and plates with the purpose of "inhibiting adjustment of the plate beyond the safety point" (lines 20-21), including illustrations.
Date: November 7, 1922
Creator: Lambert, Floyd D.
System: The Portal to Texas History
Hydraulic Swivel (open access)

Hydraulic Swivel

Patent for a new and useful improvement in hydraulic swivels by simplifying the structure and making the device more efficient and reliable.
Date: March 7, 1922
Creator: Black, Lee J.
System: The Portal to Texas History
Counterbalancing and Adjustable Sash for Windows. (open access)

Counterbalancing and Adjustable Sash for Windows.

Patent for window sashes made of two separate sections, one for the upper portion and the other for the lower portion of a window. Each sash section can be operated independently from the other by mechanisms on the right and left side of the window.
Date: February 7, 1922
Creator: Peaden, William H.
System: The Portal to Texas History
Direction Signal for Automobiles. (open access)

Direction Signal for Automobiles.

Patent for lit directional signal for automobiles that indicates driver's intention to stop or to turn left or right, including illustrations.
Date: February 7, 1922
Creator: Womack, Foster B.
System: The Portal to Texas History
Electric Water Heater (open access)

Electric Water Heater

Patent for improvements to electric water heaters adapted for heating small bodies of water. The interior walls of the cylinders in the heating unit are perforated so that water can freely circulate through and between them.
Date: February 7, 1922
Creator: Stephens, Richard M.
System: The Portal to Texas History
Fish-Catching Device (open access)

Fish-Catching Device

Patent for an improvement in fish-catching devices which provides a bait-holding device in a horizontal position and the ability to completely conceal the fish-catching device within the bait, including illustrations.
Date: February 7, 1922
Creator: Riza, George P.
System: The Portal to Texas History