Award Data

Molecular oxygen is the most critical participant in respiratory pr ocess. Adequate oxygen supply is essential for the survivals of all living species. Fast, reliable and real-time measurement of oxygen concentration (partial pressure) is of great importance in assessing the health status of a person/soldier and the timely caring of critically ill patients. Presently available oxygen sensors suf ...

There is a requirement for a seafloor mapping system that will provide high resolution imagery in very shallow water when rigidly mounted to a 24 foot boat that is advancing at up to 10 knots. In this Phase I effort we propose to determine the feasibility of meeting this requirement with a prototype multiple-ping chirp side-scan sonar to operate at high frequencies and high ping rates, where multi ...

The contractor has patented technology for a unique process that directly converts a two-dimensional acoustic disturbance, such as a wave front, into an intensity-mapped visible image in real-time without electronic circuitry; that is, it is a direct pressure gradient imager. The imager relies on the piezo-dichroic properties of a continuous layer of a dichroic material thin film that serves as bo ...

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Naval Special Warfare is developing and testing equipment and tactics for neutralization of anti-invasion mines in the very shallow water maritime environment. The device proposed herein, an electromagnetic pulse mine countermeasure device, will enhance the capability of Naval Special Warfare to neutralize mines. The proposed device is expected to be effective against most, if not all, mine types, ...

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STEAM GENERATOR TUBES REPRESENT A UNIQUE PART OF THE REACTOR COOLANT SYSTEM (RCS). LEAKAGE FROM ANY OTHER PART OF THE RCS IS CAPTURED BY THE CONTAINMENT BUILDING, BUT STEAM GENERATOR TUBE LEAKAGE IS TRANSPORTED OUT OF THE CONTAINMENT BUILDING ALONG WITH THE STEAM, WHICH IS NORMALLY UNCONTAMINATED. STEAM GENERATOR TUBES, CONSEQUENTLY, DESERVE, AND RECEIVE SPECIAL CONSIDERATION. THE ASSURANCE OF STE ...

ON FEBRUARY 9, 1991, AT THE MIHAMA UNIT 2 NUCLEAR POWER STATION, OPEARTED BY KANSAI ELECTRIC CORPORATION, A STEAM GENERATOR TUBE RUPTURED AND RELEASED APPROXIMATELY 9,000 GALLONS OF REACTOR COOLANT INTO THE SECONDARY SYSTEM. THE LEAKAGE CAUSED A RAPID DEPRESSURIZATION OF THE REACTOR COOLANT SYSTEM, WHICH RESULTED IN AN AUTOMATIC REACTOR TRIP AND ACTUATION OF THE HIGH PRESSURE SAFETY INJECTION SYST ...

ACOUSTIC FIELDS CAN BE DESIGNED TO COAX LIQUID BORNE SUBMICRONIC PARTICLES TO ANNOUNCE THEIR PRESENCE LOUDER THAN THE USUAL SCATTERING SIGNALS WHICH ARE PRIMARILY DETERMINED BY THE DENSITY AND COMPRESSIBILITY CONTRAST BETWEEN THE PARTICLE MATERIAL AND THE HOST FLUID. WE EXPECT A SIGNAL ENHANCEMENT OF AT LEAST 60DB. THE KEY CONCEPT IS TO COAX THE PARTICLES TO SOFT CAVITATE AND DETECT THE ENSUING TR ...