Abstract: A low temperature chemical vapor deposition method for depositing silicon dioxide comprising the steps of heating a substrate upon which deposition is desired to a temperature of between 250.degree. C. (482.degree. F.) and 420.degree. C. (788.degree. F.) in a vacuum having a pressure of from about 0.1 to about 2.0 torr and introducing, together with a silane and oxygen or oxygen-containing silane, a free radical promoter (e.g., di-t-butylperoxide, t-butylhydroperoxide, or n-butylnitrite) as a co-reactant into the vacuum.

Abstract: A mechanism allows for programming the order of cells for an operator to enter data in a spreadsheet. Each cell of the spreadsheet may be provided with a "next cell" attribute, and these attributes as well as other attributes for the cells are stored in a table. The "next cell" attribute may be a constant, such as the name of the next cell, or it may be a logic expression so that the next cell to be edited can be different depending on some condition. When the operator presses the NEXT CELL key, the "next cell" attribute is searched by accessing the attribute table, and if a "next cell" attribute is found, it is evaluated to determine the next cell to be edited.

Abstract: A plastic paddle is pivotally connected to the operating arm of a microswitch. The paddle is positioned in front of a boat's drain opening. The paddle can be swivelled to one side to allow removal of the boat's drain plug. When the plug is removed and the paddle lies in front of the drain opening, if the boat is launched without replacing the drain plug, the inrushing water will move the paddle so as to close the microswitch and actuate an alarm. Enough of the drain hole is left uncovered by the paddle to allow water to drain out of the boat.

Abstract: An n-butane/isobutane splitter is operated by compressing the isobutane overhead to increase its condensing temperature, using the compressed overhead to heat bottoms in a reboiler, which is operated to condense the overhead and cooling the condensed overhead to a temperature no lower than the temperature on the top tray of the splitter and no higher than 20.degree. F. above the temperature on the top tray, whereby the throughput of the splitter is increased by 10 to 20%.

Abstract: A propane-propylene splitter is operated by compressing the propylene overhead to increase its condensing temperature, using the compressed overhead to heat bottoms in a reboiler, which is operated to condense the overhead and remove a maximum amount of heat from the condensed overhead, additionally cooling the condensed overhead to a temperature no lower than the temperature on the top tray of the splitter and no higher than 15.degree. F. above the temperature on the top tray, whereby the throughput of the splitter is increased by 10 to 20%.