Award Data

PROJECT SUMMARY Cardiac valve repair or replacement is indicated when progression of degenerative disease or bacterial infection of the native valve results in valvular dysfunction, thereby impacting cardiac output. Both procedures require the use of a woven or knitted polyester material with an internal reinforcement (Teflon, silicone or metal) to either stabilize the native valve (annuloplasty r ...

DESCRIPTION (provided by applicant): Over 60,000 prosthetic grafts, which are comprised of either polyethylene terephthalate (polyester) or expanded polytetrafluoroethylene (ePTFE), are implanted in the United States each year. Medium (6-8mm) and small (l t5mm) internal diameter (I.D.) prosthetic arterial grafts continue to have unacceptably high failure rates when used in the clinical setting. T ...

SOLID BORON HAS LONG BEEN RECOGNIZED AS A POTENTIAL HIGH VOLUMETRIC DENSITY PROPELLANT FOR VOLUME LIMITED ROCKET AND AIR BREATHING PROPULSION SYSTEMS. HOWEVER, ACHIEVING THIS POTENTIAL HAS BEEN DIFFICULT DUE TO LOW COMBUSTION AND HEAT RELEASE EFFICIENCIES IN CONVENTIONALLY DESIGNED COMBUSTORS. A THREE PHASE MODEL OF BORON ASSISTED COMBUSTION IS POSTULATED AND THE ROLE THAT KINETIC SENSITIVITY ANAL ...

TIAX will build, characterize and abuse test lithium-ion cells employing LiCoPO4 cathodes and control metal-oxide based cathodes (such as LiCoO2 ) opposite graphite anodes. In Phase I, TIAX will perform overcharge and external short circuit tests to the specification of the UL1642 standard and will also perform nail penetration tests on both types of cells. In the option program TIAX will perfor ...

Anti-access Area Denial (A2AD) capabilities from peer threats render many aspects of current CONOPS inadequate.For example, our manned aircraft are projected to experience unacceptable attrition against peer IADS forces.The overall system concept of collaborative teams of smaller UAVs and manned-unmanned teams shows great promise for counteracting the A2AD threats and improving the cost-exchange r ...

THE OBJECTIVE OF THE PROPOSED PROGRAM IS TO INITIALLY CHARACTERIZE THE PERFORMANCE OF A NEW CLASS OF CALCIUM CELLSWHICH USE AN ORGANIC CATHOLYTE. BASED ON INITIAL DATA, THISCLASS OF CELLS WILL HAVE THE ENERGY AND POWER DENSITIES OF BOBBIN-TYPE LI/SOC12 CELLS. THE MAJOR ADVANTAGES OF THIS NEW CLASS OF CELLS ARE ITS HIGH PERFORMANCE LEVEL, THE NON-CORROSIVE NATURE OF ITS CATHOLYTE, THE LOW COST OF I ...

Category theory has recently been successfully applied to translate information from one computer system to another. Researchers at MIT have developed a prototype software tool based on category theory for solving information-integration programs. The tool has successfully solved small-scale information-integration problems including a problem identified by NIST about enriching the manufacturing s ...

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Acetic acid is a large volume, global commodity chemical used as a basic building block in manufacturing polymers, anhydrides, and esters. Current acetic acid manufacturing technologies are based on carbon monoxide, which is produced by partial oxidation or steam reforming of hydrocarbons. This inherently inefficient technology wastes scarce hydrocarbon resources, consumes excessive energy, and ge ...

A critical element of our global military dominance is the overwhelming capabilities afforded by the US military space segment. Successful space operations are dependent upon accurate and actionable space situational awareness (SSA), a concept that goes beyond simple cataloging of the location and orbit of objects in space to include the ability to identify and discriminate natural and man-made ph ...