Abstract:
A method of growing carbon nanomaterials on a substrate wherein the substrate is exposed to an oxidizing gas; a seed material is deposited on the substrate to form a receptor for a catalyst on the surface of said substrate; a catalyst is deposited on the seed material by exposing the receptor on the surface of the substrate to a vapor of the catalyst; and substrate is subjected to chemical vapor deposition in a carbon containing gas to grow carbon nanomaterial on the substrate.
Abstract:
Rigid-rod copolymer compositions incorporating PBO (poly (p- phenylenebenzobisoxazole)), DiOH-PBO (poly (2,5-dihydroxy-l,4- phenylenebenzobisoxazole), DiOH-PBI (poly (2,5-dihydroxy-l,4- phenylenebenzobisimidazole)), DiOH-PyBI (poly (2,5-dihydroxy-l,4- phenylenepyridobisimidazole), PBZT (poly (p-phenylenebenzobisthiazole)) and its corresponding dihydroxy analogues attached to a flexibilizing hexafluoroisopropylidene linkage are described. Also described are their fabrication into fibers by a dry-jet wet spinning technique and the measured fiber mechanical properties. The copolymer compositions are highly flame-resistant and have potential utility for fire-protective clothing.
Abstract:
A water-soluble polymer coating for application to electrical wiring used in aircraft and other electrical structures is provided. The coating includes a water-soluble polymer such as polyvinyl acetate, polyvinyl alcohol, and methyl cellulose which is dissolved in water to form a solution. The solution may be applied to electrical wiring during manufacturing and dried to a film such that if the wire becomes damaged and exposed to water, a protective water-insoluble deposit is formed on the wiring. Alternatively, the solution may be applied to wiring which is already damaged to form a protective water- insoluble deposit.
Abstract:
A modified particle. The modified particle comprises: a semiconductor particle which is photoactivatable; and a modifier molecule attached to the semiconductor particle, wherein the modifier molecule includes an electrochemically reversible redox active site which is photoexcitable. Bioconjugated nanoparticle probes, Redox-NSs and methods of using these modified particles are also described.
Abstract:
A compliant column sheath assembly for use in a gas chromatograph is provided which includes an open tubular column in the form of a helical coil having a coiled lengt of between about 5 and 15 cm. The sheath assembly further includes an insulating sheath which surrounds the open tubular column and a frame. When incorporated in a gas chromatograph, the compliant column sheath assembly allows samples to be analyzed in about 2 to 10 seconds.
Abstract:
A sulfonated polyarylenethioethersulfone polymer and copolymer. The sulfonated polyarylenethioethersulfone polymer and copolymer comprises the reaction product of an aromatic dihalo functionality sulfonated monomer, an aromatic dithiol monomer, and optionally an aromatic dihalo functionality monomer. The invention also relates to methods of making the sulfonated polyarylenethioethersulfone polymer and copolymer, and to membranes made from the sulfonated polyarylenethioethersulfone polymer and copolymer.
Abstract:
Corrosion-inhibiting pigments based on manganese are described that contain a heptavalent (permanganate) or hexavalent (manganate) compound. An inorganic or organic material is used with the heptavalent or hexavalent manganate ion to form a compound that is sparingly soluble in water. Specific solubility control cations are chosen to control the release rate of heptavalent or hexavalent manganese during exposure to water and to tailor the compatibility of the powder when used as a pigment in a chosen binder system. Solubility control agents may also modify the processing and handling characteristics of the formed powders. Many permanganate or manganate compounds are presented that can equal the performance of conventional hexavalent chromium systems.
Abstract:
Corrosion-inhibiting pigments based on manganese are described that contain a trivalent or tetravalent manganese/valence stabilizer complex. An inorganic or organic material is used to stabilize the trivalent or tetravalent manganese ion to form a compound that is sparingly soluble, exhibits low solubility, or is insoluble in water, depending upon the intended usage. Specific stabilizers are chosen to control the release rate of trivalent or tetravalent manganese during exposure to water and to tailor the compatibility of the powder when used as a pigment in a chosen binder system. Stabilizers may also modify the processing and handling characteristics of the formed powders. Manganese/valence stabilizer combinations are chosen based on the wellfounded principles of manganese coordination chemistry. Many manganese-valence stabilizer combinations are presented that can equal the performance of conventional hexavalent chromium or tetravalent lead systems.
Abstract:
The present invention is a compact apparatus and method that provides an efficient manner for monitoring the condition and level of a functional fluid directly in operating equipment. A sensor device is provided that includes a plurality of liquid sensors and a plurality of vapor sensors that when used in conjunction with one another at different temperatures, can provide a thorough evaluation of the oxidative degradation, liquid contamination and solid contamination of the fluid to detect the end of the useful life of the fluid. By providing liquid sensors and vapor sensors on the same device, the present invention allows for a compact, efficient, and economically feasible manner to monitor the condition of fluid as well as detecting abnormal operating conditions prior to further component damage and eventual equipment failure.
Abstract:
A spun or drawn glass fiber for use in the area of medical implants, and particularly as a reinforcement for bioabsorbable polymeric orthopedic and dental implants. The glass fiber is bioabsorbable and has sufficient tensile strength and elasticity to be used as a reinforcement. It is made up of 5-50% calcium oxide (CaO), 50-95% phosphorous pentoxide (P2O5), 0-5% calcium fluoride (CaF2), 0-5% water (H2O), and 0-10% XO wherein X is either a single magnesium, zinc or strontium ion or two sodium, potassium, lithium, or aluminum ions and when X is aluminum the O represents three oxygen ions.