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NASA HAS CURRENT AND FUTURE NEEDS FOR HIGH ENERGY DENSITY RECHARGEABLE BATTERIES FOR USE IN SPACECRAFT AND PLANETARY ROVER MISSIONS. THESE APPLICATIONS REQUIRE BATTERIES THAT CAN SAFELY DELIVER IN EXCESS OF 1,000 DEEP DISCHARGE CYCLES AT A 10 MA/CM2 RATE WHILE PROVIDING A SPECIFIC ENERGY DENSITY OF 200 WH/KG. TO DATE, RECHARGEABLE LI/INTERCALATION CATHODE SYSTEMS SUCH AS LI/TIS2 AND LI/MOS2CANNOT ...

THIS PROPOSAL ADDRESSES THE PROBLEM OF CHARACTERIZING THE STATE OF A RECHARGEABLE LI BATTERY AS A FUNCTION OF CYCLE LIFE HISTORY. BECAUSE ALL LI BATTERIES ARE HERMETICALLY SEALED, WE HAVE CHOSEN TO EVALUATE THE AMOUNT AND DISTRIBUTION OF LI-ELECTROLYTE DEGRADATION PRODUCTS IN SITU BY THE APPLICATION OF ELECTROANALYTICAL TECHNIQUES AT MICROELECTRODES IMBEDDED IN THE CELL PACKAGE. TWO DIFFERENT ELEC ...

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THE PROPOSED PROGRAM IS TO SHOW FEASIBILITY OF GROWING KTIOPO(4) CRYSTALS FROM FLUX USING THE HEAT EXCHANGER METHOD (HEM[TM]). THE NON-LINEAR OPTICAL COEFFICIENTS OF KTP ARE COMPARABLE TO BA(2)NANB(5)O(15) (BSN), AN OUTSTANDING MATERIAL FOR SECOND HARMONIC GENERATION OF 0.53 UM RADIATION FROM 1.06 MICROMETER LASER RADIATION. SMALL KTP CRYSTALS OF UP TO 125 MM(3) HAVE BEEN GROWN BY THE HYDROTHERMAL ...

THE FIRST TITANIUM (TI) DOPED LASER, TI:A1203, WAS DIS- COVERED IN 1982 SINCE THAT TIME, TI HAS BEEN OF INTEREST AS A DOPANT IN VARIOUS LASER HOSTS FOR TUNABLE SOLID-STATE LASER APPLICA- TIONS. RECENTLY A FRENCH GROUP DISCOVERED A NEW LASER HOST LANTHANUM MAGNESIUM HEXAALUMINATE (LMAO, LAMGA111019). LASER OPERATION IN CR-DOPED, ND-DOPED, AND CR, ND-DOPED LMAO HAS BEEN REPORTED. THE PRESENT PROPOSA ...

BETA-BARIUM BORATE (BETA-BAB2O4), A NON-LINEAR OPTICAL MATERIAL, TRANSFORMS TO THE NON-OPTICALLY ACTIVE CENTROSYMMETRIC ALPHA-PHASE AT 925 DEGREES C, BEFORE MELTINGAT 1105 DEGREES C. THE NON-REVERSIBLE NATURE OF THIS TRANSFORMATION IMPOSES SEVERE RESTRICTIONS ON THE GROWTH METHOD AND PRECLUDES SINGLE CRYSTAL GROWTH DIRECTLY FROM THE MELT. A GENERAL APPROACH FOR THE PREPARATION OF BETA-BAB2O4 AND O ...

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A CONCEPT HAS BEEN DEVISED FOR THE APPLICATION OF MODERN SPEECH-RECOGNITION TECHNIQUES TO ASSIST IN ARTICULATION TRAINING OF PERSONS WITH SPEECH DEFICITS OR RELATED LEARNINGDISABILITIES. PROPOSED IS A DEVELOPMENT EFFORT TO EMBODY THE CONCEPT IN SOFTWARE AND ADD-ON HARDWARE FOR A PERSONAL COMPUTER TERMINAL. IT IS EXPECTED THAT THIS TRAINING AID WOULD BE UTILIZED AT FIRST, AT SPEECH AND LANGUAGE CLI ...