Award Data

FOR THE CLASS OF DNA NUCLEAR WEAPONS EFFECTS SIMULATOR KNOWN AS THE PLASMA RADIATING SOURCE (PRS), HIGH RESOLUTION X-RAY SPECTROSCOPY DIAGNOSTIC MEASUREMENTS PROVIDE CRITICAL INFORMATION BOTH FOR CHARACTERIZATION OF THE TEST-OBJECT RADIATION ENVIRONMENT AND FOR OPTIMIZATION OF THE SOURCE. PRESENT PRS HIGH RESOLUTION X-RAY SPECTROMETERS RECORD DATA ON PHOTOGRAPHIC FILM, THE PROCESSING AND ANALYSIS ...

COMMERCIAL SAPPHIRE SURFACES CONTAIN BURIED DAMAGE WHICH HAS A DELETERIOUS INFLUENCE ON SOS LAYERS GROWN THEREON. THE DEFECTS IN THE SILICON LAYERS RESULT IN A REDUCED YIELD OF DEVICES AND PERFORMANCE LIMITATIONS. MUCH OF THE DAMAGE IN THE SAPPHIRE SURFACE IS PRODUCED BY THE POLISHING STEP, WHICH EMPLOYS AN ABRASIVE PAD IN CONTACT WITH THE SAPPHIRE SURFACE. AN IMPROVED POLISHING PROCESS HAS BEEN E ...

COAL IS AN ATTRACTIVE FUEL FOR RAILROAD LOCOMOTIVES BECAUSE OF ITS DOMESTIC ABUNDANCE AND LOW COST PER UNIT OF HEAT. ONE RESTRAINT IN COAL AS A LOCOMOTIVE FUEL IS ENVIRONMENTAL POLLUTION. CONSIDERING THESE CONFLICTING CONDITIONS OF ATTRACTIVENESS AND DIFFICULTY IN USING COAL AS A FUEL, IT BECOMES QUITE IMPORTANT HOW THE COAL IS HANDLED AND CONVERTED TO HEAT FOR LOCOMOTIVE POWER. A STUDY OF HEAT EN ...

A SIX MONTH PROGRAM IS PROPOSED TO DEVELOP RIGID SYNTOCTIC POLYIMIDE FOAM PANELS POSSESSING FLAME RESISTANCE, NO-SMOKE EMISSION AND LOW THERMAL CONDUCTANCE FOR REPLACING INTERIOR MATERIALS OF TRANSPORTATION VEHICLES NOW DESIGNATED AS POTENTIALLY HAZARDOUS. AT LEAST FOUR CANDIDATE MATERIALS WILL BE PREPARED AND TESTED TO SELECT THE MOST PROMISING CANDIDATE FOR SCALE-UP IN A PHASE II PROGRAM.

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Mechanical damage (typically from third party excavations) is the most frequent source of leaks and ruptures in pipelines. The most common type of mechanical damage is dents, sometimes associated with secondary features such as gouges, external corrosion, or cracks. Currently used techniques for assessing dents are not accurate enough for reliable determination of fitness for service. In this p ...

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This Small Business Innovation Research Phase I proposal seeks to develop a low-cost, compact, and rugged gamma-ray spectrometer that could be deployed in large numbers to provide enhanced security from radiological threats. The proposed approach is based on readily available components that are used in conjunction with proprietary designs and electronics to provide unmatched capabilities. The P ...

SOLAR ELECTRICAL GENERATION CELLS ARE SUBJECT TO RADIATION AND THERMAL BREAKDOWN FROM EXPOSURE. THE PURPOSE OF THE PRESENT STUDY IS TO IMPROVE THERMAL STABILITY OF ELECTRONIC EQUIPMENT IN ENERGY-EFFICIENT STRUCTURES. OBJECTIVES ARE TO DESIGN, CONSTRUCT AND TEST AN INNOVATIVE PROTECTIVE SYSTEM FOR SOLAR COLLECTORS THAT WILL IMPROVE THE THERMAL STABILITY AND RADIATION DETERIORATION OF SUCH CELLS. A ...

IT HAS BEEN SUGGESTED THAT MOST NUCLEAR WARS IMAGINED WOULD CAUSE DECREASED SOLAR ENERGY AT THE GROUND OVER MUCH OF THE WORLD AND THAT THE SMOKE AND DUST CAUSING THE SUNLIGHT ATTENUATION WOULD PERSIST FOR MONTHS TO YEARS. THE ASSUMPTIONS INVOKED IN REACHING SUCH ESTIMATED EFFECTS ARE SUBJECT TO GREAT UNCERTAINTY AND MERIT MORE ATTENTION. WE PROPOSE TO PROVIDE INDEPENDENT BEST ESTIMATES OF MEAN VAL ...