Abstract: The solar array is attached to a support structure which permits it to pivot about two non-parallel and non-intersecting axes. The array may then be easily moved to track the sun, maintaining the production of electricity. The structure may be adapted for attachment to a surface such as the ground.

Abstract: The solar array is attached to a support structure which permits it to pivot about two non-parallel and non-intersecting axes. The array may then be easily moved to track the sun, maintaining the production of electricity. The structure may be adapted for attachment to a surface such as the ground.

Abstract: A solar tracker system and method for making are disclosed. The system may comprise a solar panel array assembly having at least two attachments, a support anchor assembly for attaching to a surface and having at least two attachments, and a support structure including a plurality of elongated support rods for securing the array assembly above the support anchor assembly. Each support rod may be attached at one end to one of the attachments of the solar panel array and attached at the other end to one of the attachments of the support anchor assembly.

Abstract: Inverter bus structures, assemblies and associated methods are disclosed herein. One embodiment of the disclosure, for example, is directed to a power inverter including an inverter module for converting DC power to AC power, a printed circuit board carrying a capacitor array, a DC power source, and a bus structure. The bus structure is physically coupled each of the inverter module and the printed circuit board, and the bus structure electrically couples each of the inverter module, the printed circuit board to the DC power source.

Abstract: An inverter capable of supplying power to utility grids of varying line voltages is described. In some examples, the inverter contains multiple output taps that are selected to output power to the utility grid based on the voltage of the utility grid. In some examples, the inverter includes a multi-pin connector that connects with one of multiple receptacles associated with a desired voltage configuration. In some examples, the inverter is capable of adapting to a defined line voltage in two steps.

Abstract: A middle distillate hydrocarbon fuel boiling in the range of about 160.degree. C. to about 400.degree. C. having an improved cetane number is disclosed. The fuel comprises at least about 3 weight percent oxygenated compounds preferably at least about 3 weight percent oxygenated aromatic compounds. The oxygenated compounds preferably comprise alkylaromatics and/or hydroaromatics, preferably oxygenated at the benzylic carbon position.

Abstract: Liquid petroleum hydrocarbon blends having improved thermal stability at temperatures of 1000.degree. F. and higher are prepared by removing from the blends dissolved molecular oxygen and maintaining low levels of certain trace impurities in the blends. Trace impurity compounds that are maintained at low levels include: sulfur compounds classed as thiols, sulfides, disulfides and polysulfides; organic oxygen compounds classed as hydroperoxides, peroxides, paraffinic carboxylic acids, and phenols; nitrogen compounds classed as amides and alkyl-pyridines; and reactive olefins. Additional improvements in the blends can be obtained by providing them with a dibenzothiophene or a nitrogen compound classed as a paraffinic amine, carbazole or piperidine. The treated blends of this invention have substantially the same physical properties as similar blends that have not been so treated.

Abstract: A floatation device to which a swimmer's suit may be secured for retrieval at a later time. The floatation device includes floatation apparatus and apparatus for attaching the bathing suit to the floatation apparatus. The apparatus for attaching the suit to the floatation device may include a spring biased clip, a hole provided in the floatation device, or a pair of narrowly separated fingers extending from the floatation apparatus. The floatation apparatus may be formed of a closed cell synthetic foam formed of a material such as polyethylene, or any other buoyant material.

Abstract: Liquid petroleum hydrocarbon blends having improved thermal stability at temperatures of 1000.degree. F. and higher are prepared by removing from the blends dissolved molecular oxygen and maintaining low levels of certain trace impurities in the blends. Trace impurity compounds that are maintained at low levels include: sulfur compounds classed as thiols, sulfides, disulfides and polysulfides; organic oxygen compounds classed as hydroperoxides, peroxides, paraffinic carboxylic acids, and phenols; nitrogen compounds classed as amides and alkyl-pyridines; and reactive olefins. Additional improvements in the blends can be obtained by providing them with a dibenzothiophene or a nitrogen compound classed as a paraffinic amine, carbazole or piperidine. The treated blends of this invention have substantially the same physical properties as similar blends that have not been so treated.

Abstract: A catalyst for initiating the spontaneous decomposition of hydrazine and hydrazine nitrate into ammonia, nitrogen and hydrogen comprises ruthenium supported on high-surface area silica, alumina or silica-alumina substrates promoted with oxides of alkalis, alkaline earths, transition elements and rare earths. The catalyst is particularly useful in monopropellant rocket engines and gas generators and is characterized by: high activity when used in either a pulsed or continuous mode, minimal loss in crush strength or surface area after firing and use of non-strategic materials.