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AER PROPOSES TO DEVELOP A NEW CONCEPT IN PROVIDING WEATHER \FORECASTING FOR INDUSTRY, MADE POSSIBLE BY THE DECREASING COSTS OF POWERFUL COMPUTERS. IMPROVED SHORT-RANGE FORECASTS WOULD BE OBTAINED BY RUNNING A MODEL ON THE USER'S COMPUTER. THE MODEL WOULD ACCESS THE FORECASTS OF THE NATIONAL METEROLOGICAL CENTER AND MODIFY THEM THROUGH A DETAILED SIMULATION OF THE PHYSICS OF ATMOSPHERIC PROCESSES,T ...

IT IS DESIRABLE TO ENHANCE THE ABILITY TO MAKE HIGH PURITY SILICON CARBIDE CRYSTALS TO BE USED IN MONITORING INSTRUMENTS AND SENSORS FOR USE IN HARSH ENVIRONMENTS. A SIGNIFICANT ADVANCEMENT IN SIC PRODUCTION HAS BEEN MADE AT NASA-LEWIS. THE OBJECTIVE OF THIS PROJECT IS TO OPTIMIZE THE NASA-LEWIS PROCESS FOR MAKING SEMICONDUCTOR-QUALITY SILICON CARBIDE CRYSTALS BY BETTER UNDERSTANDING BOTH THE CHEM ...

THE PURPOSE OF THIS PROJECT IS TO DESIGN AND DEVELOP AN INSTRUMENT TO MEASURE FLUXES OF TRACE GASES IN ORDER TO DETERMINE THEIR SOURCES AND SINKS IN THE BIOSPHERE. THE METHOD IS BASED ON THE WELL ESTABLISHED EDDY CORRELATION TECHNIQUE AND WOULD USE A TUNABLE DIODE LASER SOURCE COMBINED WITH A UNIQUE OPEN PATH MULTIPLE PASS ABSORPTION CELL FOR TRACE SPECIES DETECTION AT SUB-PPB LEVELS. THIS INSTRUM ...

THE KEY PROBLEM INHIBITING THE DEVELOPMENT OF HIGH ENERGY RECHARGEABLE LI BATTERIES IS THE POOR CYCLEABILITY OF THE LI ELECTRODE. ALTHOUGH MAJOR ADVANCES IN THIS TECHNOLOGY HAVE BEEN MADE OVER THE LAST FIVE YEARS, SIGNIFICANT IMPROVEMENTS IN CONTROLLING LI-ELECTROLYTE REACTIVITY ARE STILL REQUIRED. SOLVENTS SUCH AS 2-METHYLTETRAHYDROFURAN, 2-METHYLFURAN, AND 3-METHYLSULFOLAN, ARE KNOWN TO BE STABL ...

BOVINE PANCREATIC RIBONUCLEASE A (RNASE A) IS A MODEL SYSTEMFOR ESTABLISHING RULES THAT GOVERN PROTEIN STABILITY AND FOLDING. BY LEARNING AND APPLYING THESE RULES, MORE ROBUST ENZYMES OF VARIOUS TYPES COULD BE DESIGNED FOR COMMERCIAL APPLICATIONS. SYNTHESIS, CLONING AND EXPRESSION IN BACILLUSSUBTILIS OF A GENE ENCODING RNASE A WILL ALLOW FOR THE ECONOMICAL PRODUCTION OF VARIANT PROTEINS WHICH ARE ...

INNOVATIVE APPROACHES TO SOLVE THE PROBLEMS ENCOUNTERED AT BOTH THE ANODE AND CATHODE OF THE HYDROGEN-BROMINE BATTERY SYSTEM ARE ADDRESSED. ADVANCED INERT CATALYSTS WILL BE PREPARED AS THE POSITIVE ELECTRODE MATERIAL AND TESTED FOR THEIR RESISTANCE AGAINST BROMINE INTERCALATON AND SUBSEQUENT DEGRADATION. SIMILARLY, NOVEL ELECTRO-CATALYSTS WILL BE USED FOR THE NEGATIVE ELECTRODE TO IMPROVE THE RESI ...

A NEW CROSS-CORRELATION METHOD DEVELOPED FOR MEDICAL DIAGNOSIS AND A NEW FLAT RESPONSE ACOUSTIC EMISSION TRANSDUCER ARE BROUGHT TOGETHER WITH THE PROMISE OF AN IMPROVED, NONDESTRUCTIVE, ULTRASONIC METHOD TO CHARACTERIZE MATERIALS. THE IMPULSE RESPONSE CAN YIELD VALUABLE INFORMATION ABOUT MATERIALS SUCH AS DAMAGE, POROSITY, MICROSTRUCTURE, COMPOSITION, FATIGUE, ETC. THE CROSS-CORRELATION METHOD, NO ...

THE GOAL IS TO DESIGN AN OPTIMAL SPECTROMETER/WAVEMETER INSTRUMENT THAT WILL FACILITATE LASER REMOTE SENSING MEASUREMENTS (LIDAR) THAT REQUIRE CAREFUL LASER TUNING. THE OUTPUT OF A LASER SPECTROMETER/WAVEMETER (LS/W) WILL NOT ONLY SERVE AS A LASER DIAGNOSTIC BUT ALSO MAKE IT POSSIBLE TO SERVO CONTROL THE LASER WAVELENGTH AND LINE SHAPE. NUMEROUS INTERFEROMETERS FOR LS/W SYSTEMS HAVE BEEN SUGGESTED ...

A PULSED DEVICE WILL BE STUDIED WHICH CAN PRODUCE LARGE FLUXES OF OXYGEN ATOMS IN THE 1 TO 5 EV ENERGY RANGE. THE HIGH END OF THIS ENERGY RANGE CORRESPONDS TO VELOCITIES APPROPRIATE TO LOW EARTH SPACE SHUTTLE ORBITS. AS PRESENTLY CONFIGURED THE DEVICE WOULD PROVIDE 10(18) OXYGEN ATOMS PER PULSE AND WOULD BE SCALABLE TO HIGHER LEVELS AND REPETITIVE PULSING. AN EXPERIMENTAL PROOF OF CONCEPT WILL BE ...

PHYSICAL SCIENCES INC. PROPOSES TO INVESTIGATE VARIOUS MIXEDMETAL OXIDES AS DUAL FUNCTION ALKALINE OXYGEN ELECTROCATALYSTS. IN PARALLEL, WE PROPOSE NOVEL APPROACH FOR PREPARING THESE MATERIALS IN HIGH SURFACE AREA FORM STARTING FROM THE CONVENTIONALLY PRODUCED LOW SURFACE AREA MATERIALS. THE SUCCESSFUL COMPLETION OF THIS PROGRAM WOULD CONTRIBUTE TO THE DEVELOPMENT OF AN INTEGRATED ALKALINE REGENER ...