Abstract: Mitigating a user interface display function of a modular energy system includes receiving formatted video data at a video data converter circuit, providing differential video signaling data to the display from the video data converter circuit, providing a copy of the differential video signaling data to a processor, and determining that the differential video signaling data is changing over time. Mitigating erroneous outputs from an isolated interface includes receiving a state of a first switch of a first footswitch coupled to a first comparator and a reference voltage coupled to the first comparator, receiving the state of the first switch coupled to the first duplicate comparator and the reference voltage coupled to the first duplicate comparator, comparing the output of the first comparator with the output of the first duplicate comparator, and determining activation or deactivation of a surgical instrument coupled to the controller based on the comparison.

Abstract: A composition comprising expandable cross linked polymeric microparticles having an unexpanded volume average particle size diameter of from about 0.05 to about 10 microns and a cross linking agent content of about 6,000 to less than about 9,000 ppm of labile cross linkers and from 0 to about 300 ppm of non-labile cross linkers, useful for modifying the permeability of subterranean formations and increasing the mobilization and/or recovery rate of hydrocarbon fluids present in the formations.

Abstract: A hinge includes a link with two lateral sides, and an assembly comprising a pair of side plates. Protruding from each lateral side of the link is a pair of parallel pins, and each side plate includes a pair of non-parallel guide slots. The assembly and the link are positioned such that each pin slidably engages one of the guide slots and the pins can simultaneously slide in their respective guide slots. Since the guide slots are non-parallel, when one pin is forced to slide in one direction, the other pin of the pair is forced to slide in a different direction, causing the assembly to both turn and translate with respect to the link.

Abstract: A method for reducing or completely eliminating water influx in an oil or natural gas borehole includes introducing in the borehole an aqueous solution of a copolymer comprising: A) 40–98 wt. % of structural units of formula (I), wherein: R1 is hydrogen or methyl; R2 represents C2–C10 alkylene; and Me+ represents an ammonium metal ion and an alkali metal ion; B) 0.1 to 58 wt. % of structural units of formula (II); C) 0.1 to 10 wt. % of structural units of formula (III), wherein: R3 and R4 independently of each other represent hydrogen, methyl or ethyl, or R3 and R4 represent together a propylene group, which, with inclusion of a radical (A), form a pyrrolidon radical or, with inclusion of a pentamethylene group, forms a caprolactam radical; D) 0.10 to 10 wt % of structural units of formula (IV). The method also includes introducing in the ground or deposit, simultaneously with the copolymer or subsequently, an agent for crosslinking the copolymer.

Abstract: A composition comprising expandable cross linked polymeric microparticles having an unexpanded volume average particle size diameter of from about 0.05 to about 10 microns and a cross linking agent content of from about 9,000 to about 200,000 ppm of labile cross linkers and from 0 to about 300 ppm of non-labile cross linkers. The composition is used for modifying the permeability of subterranean formations and increasing the mobilization and/or recovery rate of hydrocarbon fluids present in the formations.

Abstract: This invention is directed to a composition comprising expandable cross linked polymeric microparticles having an unexpanded volume average particle size diameter of from about 0.05 to about 10 microns and a cross linking agent content of about 1,000 to less than about 9,000 ppm of labile cross linkers and from 0 to about 300 ppm of non-labile cross linkers and to the use of the composition for modifying the permeability of subterranean formations and increasing the mobilization and/or recovery rate of hydrocarbon fluids present in the formations.

Abstract: This invention is directed to a composition comprising expandable cross linked polymeric microparticles having an unexpanded volume average particle size diameter of from about 0.05 to about 10 microns and a cross linking agent content of about 1,000 to less than about 9,000 ppm of labile cross linkers and from 0 to about 300 ppm of non-labile cross linkers and to the use of the composition for modifying the permeability of subterranean formations and increasing the mobilization and/or recovery rate of hydrocarbon fluids present in the formations.

Abstract: A composition comprising expandable cross linked polymeric microparticles having an unexpanded volume average particle size diameter of from about 0.05 to about 10 microns and a cross linking agent content of about 6,000 to less than about 9,000 ppm of labile cross linkers and from 0 to about 300 ppm of non-labile cross linkers, useful for modifying the permeability of subterranean formations and increasing the mobilization and/or recovery rate of hydrocarbon fluids present in the formations.

Abstract: This invention is directed to a composition comprising expandable cross linked polymeric microparticles having an unexpanded volume average particle size diameter of from about 0.05 to about 10 microns and a cross linking agent content of from about 9,000 to about 200,000 ppm of labile cross linkers and from 0 to about 300 ppm of non-labile cross linkers and to the use of the composition for modifying the permeability of subterranean formations and increasing the mobilization and/or recovery rate of hydrocarbon fluids present in the formations.

Abstract: This invention is directed to a composition comprising expandable cross linked polymeric microparticles having an unexpanded volume average particle size diameter of from about 0.05 to about 10 microns and a cross linking agent content of from about 9,000 to about 200,000 ppm of labile cross linkers and from 0 to about 300 ppm of non-labile cross linkers and to the use of the composition for modifying the permeability of subterranean formations and increasing the mobilization and/or recovery rate of hydrocarbon fluids present in the formations.

Abstract: The present invention provides a hinge construction of two mounting plates and a substantially U-shaped center link which connects the axes of pivot of the two plates. The link and plates contain stop mechanisms which determine their respective limits of pivot. In addition, the hinge contains a means for restraining the rotation of only one of the mounting plates around its corresponding link arm to insure a pattern of motion that is always consistent, and allows for the hinge to be mounted with a very narrow gap between the members being joined. The hinge of the present invention can be variably constructed to conform to a number of alternative uses.