Abstract: An oxygen supply unit for use with a blood oxygenator comprises an oxygen concentrator and a carbon dioxide scrubber. In an on-line operational mode, oxygen-rich gas from the oxygen concentrator is predominantly supplied to the blood oxygenator with a reduced flow of recycled gas from the concentrator. In an off-line operational mode where the oxygen supply unit is being powered by battery only, a larger flow of recycled gas from the blood oxygenator is passed through the carbon dioxide scrubber and combined with a lesser amount of oxygen-rich gas from the oxygen concentrator. The oxygen supply unit may be used in combination with a blood pump and oxygenator to provide ambulatory blood oxygenation to patients with compromised lung function.

Abstract: An oxygen supply unit for use with a blood oxygenator comprises an oxygen concentrator and a carbon dioxide scrubber. In an on-line operational mode, oxygen-rich gas from the oxygen concentrator is predominantly supplied to the blood oxygenator with a reduced flow of recycled gas from the concentrator. In an off-line operational mode where the oxygen supply unit is being powered by battery only, a larger flow of recycled gas from the blood oxygenator is passed through the carbon dioxide scrubber and combined with a lesser amount of oxygen-rich gas from the oxygen concentrator. The oxygen supply unit may be used in combination with a blood pump and oxygenator to provide ambulatory blood oxygenation to patients with compromised lung function.

Abstract: An oxygen supply unit for use with a blood oxygenator comprises an oxygen concentrator and a carbon dioxide scrubber. In an on-line operational mode, oxygen-rich gas from the oxygen concentrator is predominantly supplied to the blood oxygenator with a reduced flow of recycled gas from the concentrator. In an off-line operational mode where the oxygen supply unit is being powered by battery only, a larger flow of recycled gas from the blood oxygenator is passed through the carbon dioxide scrubber and combined with a lesser amount of oxygen-rich gas from the oxygen concentrator. The oxygen supply unit may be used in combination with a blood pump and oxygenator to provide ambulatory blood oxygenation to patients with compromised lung function.

Abstract: An oxygen supply unit for use with a blood oxygenator comprises an oxygen concentrator and a carbon dioxide scrubber. In an on-line operational mode, oxygen-rich gas from the oxygen concentrator is predominantly supplied to the blood oxygenator with a reduced flow of recycled gas from the concentrator. In an off-line operational mode where the oxygen supply unit is being powered by battery only, a larger flow of recycled gas from the blood oxygenator is passed through the carbon dioxide scrubber and combined with a lesser amount of oxygen-rich gas from the oxygen concentrator. The oxygen supply unit may be used in combination with a blood pump and oxygenator to provide ambulatory blood oxygenation to patients with compromised lung function.

Abstract: An oxygen supply unit for use with a blood oxygenator comprises an oxygen concentrator and a carbon dioxide scrubber. In an on-line operational mode, oxygen-rich gas from the oxygen concentrator is predominantly supplied to the blood oxygenator with a reduced flow of recycled gas from the concentrator. In an off-line operational mode where the oxygen supply unit is being powered by battery only, a larger flow of recycled gas from the blood oxygenator is passed through the carbon dioxide scrubber and combined with a lesser amount of oxygen-rich gas from the oxygen concentrator. The oxygen supply unit may be used in combination with a blood pump and oxygenator to provide ambulatory blood oxygenation to patients with compromised lung function.

Abstract: A particle counter system is disclosed having a linear diverging lens, preferably a Powell lens, in order to create a top-hat profile without a loss of beam energy. The particle counter system disclosed creates ideal beam intensity distribution across the ribbon of light originating from the laser diode of the particle counter.

Abstract: A reflector for photovoltaic power generation is characterized by the use of a color coating on the surface of the reflector material which is stable to ultraviolet light. The reflector includes a substrate and a layer of high purity aluminum on the substrate. The aluminum layer is anodized and coated with a gold dye so that the reflector has a reflectivity which is high for long wave, near infrared, and red to green light, moderate for blue light, and low for ultraviolet light. When such a reflector is arranged adjacent to a photovoltaic panel, it reflects additional sunlight onto the panel to increase the electrical output of the panel without damaging the solar collector material of the panel.

Abstract: A reflector for photovoltaic power generation is characterized by the use of a color coating on the surface of the reflector material which is stable to ultraviolet light. The reflector includes a substrate and a layer of high purity aluminum on the substrate. The aluminum layer is anodized and coated with a gold dye so that the reflector has a reflectivity which is high for long wave, near infrared, and red to green light, moderate for blue light, and low for ultraviolet light. When such a reflector is arranged adjacent to a photovoltaic panel, it reflects additional sunlight onto the panel to increase the electrical output of the panel without damaging the solar collector material of the panel.

Abstract: A combined heating/cooling system and method is provided wherein an absorption tank (20) houses a refrigerant and absorbant mixture composition. A boiler (50) heats the high pressure mixture composition and vaporizes the refrigerant. Heated absorbant is passed back through a heat exchanger (40) to be delivered back into absorption tank (20) and the vaporized refrigerant is directed to a closed-loop thermal exchange system for selectively heating and cooling ambient air. The refrigerant and absorbant mixture composition is preferably Genosorb® 1843 and HCFC-124.

Abstract: A system for tracking a randomly moving object using a laser beam and first and second beam steering assemblies. The steering assemblies pivot, respectively, about substantially perpendicular and intersecting X and Y axes and direct the laser beam along an R axis, which is perpendicular to the X axis and intersects the X and Y axes. Along the R axis, the laser beam is intercepted by a retroreflector, which is coupled to the moving object and which returns the laser beam to a quadrant detector via the steering assemblies. The quadrant detector generates an error signal representative of the object's movement relative to the X and Y axes, and this signal is transmitted to two motors which pivot the steering assemblies about the X and Y axes to reduce the error to zero. The system includes an interferometer to determine the distance of the object from a reference location. The first beam steering assembly includes two prisms which redirect the laser beam through three 90.degree.

Abstract: An improved hybrid solar/combustion powered receiver, for use e.g. with a hot gas engine, the receiver being of the type having a housing and an aperture for admitting solar radiation to the cavity defined by the housing. The improved receiver includes a heat exchanger within the cavity and having the tubes tangentially spaced; multiple burners for providing a combustion gas flow path during combustion powered operation between and around the portions of the tubes upon which solar radiation impinges; and a fused silica, internally mounted window to seal the aperture against combustion gas leakage out of the receiver.

Abstract: The solar receiver for use e.g. with a solar-powered Stirling-type hot gas engine includes an internally mounted fused silica window for sealing the receiver aperture against thermal energy convection losses. The window has a folded cone configuration with an inverted radially outer truncated conical window member, and a radially inner conical window member joined at the base to the smaller base of the outer member. The larger base of the outer conical member is attached to the receiver housing to surround the aperture, and the angle of revolution of both members is about 20.degree.. At least 50% of the solar radiation escaping the receiver through the aperture undergoes at least three reflections prior to escaping.

Abstract: An improved electromagnetic radiation collector system for concentrating electromagnetic radiation emitted from a source to a collecting mechanism. The radiation collector system includes a plurality of primary reflectors which are moveably actuated responsive to a displacement of the electromagnetic radiation source. The primary reflector members reflect and concentrate the source emitted radiation to a secondary reflector which is positionally located substantially at the focal length of the displaceable primary reflector members or plates. The secondary reflector is particularly contoured and reflectively coated to reflect the initially concentrated reflected radiation to a substantially line focus. The secondary reflector may be stationary or formed of a plurality of rotatable reflecting members. Radiation reflected from the secondary reflector is focused upon a line collector mechanism or heating a fluid medium passing therethrough.