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WE PROPOSE THE INVESTIGATION OF NUCLEATION PROCESSES CAPABLEOF CAUSING THE FREEZING OF SUPERCOOLED WATER DROPLETS IN FRONT OF A MOVING SUBSONIC AIRCRAFT. THE GOAL IS TO DEVELOPA NUCLEATION MECHANISM CAPABLE OF FREEZING THE WATER DROPLETS FAR ENOUGH IN FRONT OF THE MOVING PLANE SO THAT BY THE TIME THE PLANE REACHES THE DROPLETS THEY ARE FROZEN AND BOUNCE FROM THE LEADING EDGES AND THE IMPENAGE, WIT ...

TRADITIONAL POSITION-SENSITIVE NEUTRON DETECTORS USE EITHER GAS FILLED TUBES OR SCINTILLATOR-PHOTOMULTIPLIER TUBE COMBINATIONS. ALTHOUGH BOTH OF THESE TECHNOLOGIES HAVE RESULTED IN SUCCESSFUL POSITION-SENSITIVE NEUTRON DETECTORS,THEY HAVE A VARIETY OF INTRINSIC DEFICIENCIES. THIS PROJECTINVOLVES THE CONSTRUCTION OF NEW POSITION-SENSITIVE NEUTRON DETECTORS FROM SOLID STATE DETECTOR ELEMENTS MADE FR ...

SCINTILLATION DETECTORS REMAIN THE LEADING TYPE OF DETECTOR IN MANY AREAS OF NUCLEAR PHYSICS. ALTHOUGH IMPROVEMENTS IN SCINTILLATOR CRYSTAL TECHNOLOGY HAVE EXTENDED THE UTILITY OFSCINTILLATOR SYSTEMS, SERIOUS DEFICIENCIES IN THE OPTICAL DETECTORS USED WITH SCINTILLATION CRYSTALS LIMIT THE TECHNOLOGY'S FULL POTENTIAL. CONVENTIONAL SCINTILLATION SYSTEMS USE PHOTOMULTIPLIER TUBES OR SILICON DIODES AS ...

THE AVAILABILITY OF HIGH INTENSITY, SYNCHROTRON SOURCES TO PRODUCE HIGH FLUX, MONOCHROMATIC X-RAY BEAMS HAS RESULTEDIN IMPORTANT ADVANCES IN THE STUDY AND DETERMINATION OF THE STRUCTURE OF LARGE, FRAGILE BIOLOGICAL MACROMOLECULES. ALTHOUGH THESE SOURCES REPRESENT A MAJOR ADVANCE IN TECHNOLOGY, AT PRESENT THERE ARE NO LARGE AREA DETECTORS WITH BOTH THE HIGH FLUX CAPABILITY AND GOOD SPATIAL RESOLUTI ...

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THIS RESEARCH PROGRAM WILL DEMONSTRATE THE TECHNICAL AND ECONOMIC FEASIBILITY OF THE PROPOSED MAGNETIC SEPARATOR ON PULVERIZED COAL. A THEORETICAL COMPARISON OF THE PROPOSED SEPARATOR WITH WORK PUBLISHED ON OPEN GRADIENT MAGNETIC SEPARATION BY THE OAK RIDGE NATIONAL LABORATORY INDICATES THAT THE SEPARATOR WILL HAVE HIGH LEVELS OF ASH CLEANING. THIS IS BECAUSE OF ITS COUNTERCURRENT PRINCIPLE OF OPE ...

THE OBJECTIVE OF THIS PROGRAM IS TO DEVELOP INNOVATIVE APPROACHES FOR REMOTE MONITORING AND CONTROL OF ARC WELDING--AND POSSIBLY OF OTHER HIGH LUMINOSITY PROCESSES--BYUSING A NOVEL VISION SENSOR THAT INCORPORATES PULSED LASER ILLUMINATION AND SYNCHRONIZED IMAGE SENSING TO SUPPRESS THE WELDING ARC IN THE VIDEO IMAGE; APPROPRIATE VISION PROCESSING TECHNIQUES THAT ENHANCE THE IMAGE, DETECT IMPORTANT ...

INTERANODE ARCING IS ONE OF THE MOST FREQUENT AND DANGEROUS FAULTS IN A MAGNETOHYDRODYNAMIC (MHD) CHANNEL. IT REDUCES CHANNEL RELIABILITY AND LIMITS GENERATOR LIFETIME. THE OBJECTIVE OF THIS WORK IS TO ELIMINATE INTERANODE ARCING. WHEN AN INTERANODE VOLTAGE EXCEEDS APPROXIMATELY 50 TO 60 V,ARCING IS LIKELY TO OCCUR. THIS ARC IS DRIVEN BY THE LORENTZ FORCE INTO THE INTERANODE SPACE, WHERE IT CUTS T ...

INNOVATIVE AND PRACTICAL MATERIALS ARE DESCRIBED WHICH UNDERGO REVERSIBLE SOLID-STATE ENERGY STORAGE TRANSITIONS. THIS TECHNOLOGY WILL COMBINE THE PROPERTIES OF HIGH LATENT HEAT STORAGE CAPACITY AND EXCELLENT THERMAL CONDUCTIVITY TO YIELD MATERIALS WHICH CAN QUICKLY RESPOND TO THE IMPOSITION OF THERMAL STRESS, EITHER HOT OR COLD.

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