Abstract: Methods of reducing gene expression, protein production and messenger RNA output in a cell are disclosed. Also disclosed is a method for delivering a selected ribozyme to a target mRNA in a cell. The methods are useful for prophylactic and therapeutic purposes.

Abstract: Methods of reducing gene expression, protein production and messenger RNA output in a cell are disclosed. Also disclosed is a method for delivering a selected ribozyme to a target mRNA in a cell. The methods are useful for prophylactic and therapeutic purposes.

Abstract: A magnetic sensor that measures the angle of the sensor's sensitive axis relative to a local magnetic field compensates the navigation solution of a MEMS-IMU/GPS navigation system. A stable navigation solution is thereby maintained. The magnetic sensor is mounted on a body axis of the vehicle perpendicular the spin axis of the vehicle. As the vehicle spins, the magnetic sensor provides an analog output voltage that varies sinusoidally with vehicle roll with the zero crossings occurring when the sensor's sensitive axis is perpendicular to the local magnetic field. The magnetic sensor measurements combined with knowledge of the local magnetic field relative to the local level reference are used to correct the navigation solution's roll error. Following high rate sampling of accelerometers and gyros, and algorithm to computational de-spin in the navigation solution is executed whereby navigation processing may be implemented with a non-rolled vehicle body frame algorithm.

Abstract: A method for increasing the accuracy of ranging measurements between data link systems is described. The method, actively aided ranging, increases ranging measurement accuracy by decreasing the dependence of the measurement on the relative clock bias between data links. The method is immune from error due to time bias between a position interrogator and a responder.

Abstract: A dual-walled coiled plate heat exchanger with vented interface includes four plates of stainless steeel welded together and inflated to form a refrigerant passage between two of the plates, a water passage between another two of the plates, and a vented interface between the two passages such that leakage from either of the passages into the interface is vented to the atmosphere and not to the other passage.

Abstract: A coiled heat exchanger utilizing a sandwich plate type construction with a plurality of spot welds equally spaced throughout, the plate being inflated to expand the passageways therebetween, has fluid tight connections feeding through the outside of the coil for accessing both passageways adjacent and opposite the center divider plate. One or more arcuate slots are punched in the center divider plate and surround a spot weld, with a larger hole punched in the adjacent outer plate and a tube welded against the divider plate to seal the arcuate slot and form a fluid connection between the passageway opposite the divider plate and the outside of the coil.

Abstract: A base is provided and a rotor is journaled from the base for rotation about a first upstanding axis. The rotor includes a plurality of vanes journaled therefrom for rotation about second axis spaced about and radially outwardly from the first axis and vane displacement control structure is operatively connected between the base and the vanes for proportionally angularly displacing the vanes relative to the rotor 180.degree. in one direction during each 360.degree. of rotation of the rotor in the opposite direction. The vanes are angularly displaced in optimum positions relative to the rotor and each other to develop maximum thrust by the vanes on the rotor responsive to fluid flow against the vanes from a predetermined side of the first axis.