Award Data

NEW NASA SATELLITE REMOTE SENSING PROGRAMS SUCH AS TRMM, WHICH INTEND TO MEASURE GLOBAL PRECIPITATION, REQUIRE "GROUND TRUTH" CALIBRATION. PRECIPITATION MEASUREMENT IS ESPECIALLY DIFFICULT FROM SHIPS AT SEA, WHICH ARE THE PRIMARY "SEA TRUTH" AVAILABLE OVER MOST OF THE EARTH'S SURFACE. CONVENTIONAL GAGES ARE UNSUITED TO MARINE PLATFORMS. IF SUCCESSFUL, THIS RESEARCH WILL RESULT IN A PRACTICAL AND I ...

A NON-INTRUSIVE FLOW MEASUREMENT SYSTEM IS PROPOSED FOR SMALL DIAMETER, LOW FLOW RATE, AND LOW PRESSURE DIFFERENTIALTHERMAL CONTROL FLUID SYSTEMS. THE PROPOSED TECHNIQUE UTILIZES A CW DIODE BASED LASER DOPPLER VELOCIMETER (LDV) WHICH CAPTURES SCATTERED RADIATIONFROM MINUTE (

WE BELIEVE IT MAY BE POSSIBLE TO DETECT INTERNAL WAVE REGULARITIES GENERATED BY MOVING SUBMARINES BY USING NON-ACOUSTIC MICROTHERMAL ARRAY MEASUREMENTS SENSITIVE AT THE 0.001 DEG C LEVEL OR BELOW. TYPICALLY OCEANIC MICROTHERMAL TEMPERATURE GRADIENT MEASUREMENTS ARE COMPUTED AS SMALL DIFFERENCES (...) BETWEEN THERMISTOR MEASURED TEMPERATURES T(2) AND T(1) AT TWO DIFFERENT LEVELS ON A TOWED ARRAY. A ...

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THE USE OF EXTRATERRESTRIAL SOLAR IRRADIATED SEMICONDUCTOR POWDERS TO PHOTOCATALYTICALLY OXIDIZE ORGANIC TOXICANTS PERSISTENT IN THE SPACE STATION'S POST-TREATED WATER, TO THELEVELS SPECIFIED BY NASA MEDICAL SCIENCES DIVISION, IS PROPOSED. THE TOTAL MINERALIZATION OF SEVERAL CLASSES OF ORGANIC COMPOUNDS BY THE UV IRRADIATION OF UNDOPED, NAKED AND PLATINIZED TIO2 (ANATASE) POWDERS HAS BEEN ABUNDANT ...

MEASUREMENTS OF THE HYSTERESIS CHARACTERISTICS AND SWITCHING KINETICS WILL BE MADE ON THREE FERROELECTRIC THIN-FILM MEMORY MATERIALS: LEAD GERMANATE WITH 0 TO 10% SILICON (PB[5]GE[3-X]SI[X]O[11]); BISMOTH TITANATE (BI[4]TI[3]O[12]); AND POTASSIUM NITRATE (KNO[3]). EMPHASIS WILL BE PLACED IN DETERMINING THE RATE-LIMITING PARAMETER FOR SWITCHING (E.G., SIDEWAYS DOMAIN WALL SPEED IN THE CASE OF KNO[3 ...

WE HAVE FABRICATED POTASSIUM NITRATE FERROELECTRIC MEMORIES IN THE FORM OF 32 X 32 CELL ARRAYS ON GLASS SUBSTRATES (1KB) AND MEASURED THEIR SWITCHING TIMES AND READ WRITE CHARACTERISTICS. THE THINNEST KNO(3) FILMS TESTED (75NM) YIELD 20 NS READ-WRITE TIMES AND HIGH BREAKDOWN VOLTAGES (17V). MINIMUM ADDRESS VOLTAGES OF 1.6V ARE ACHIEVED AT 150 NM THICKNESS. A THICKNESS WINDOW FROM 65 TO 800 NM IS C ...

WE PROPOSE TO PURIFY AN IL-1 INHIBITOR FROM THE SUPERNATANT OF MONOCYTES CULTURED ON PLATES COATED WITH IGG. THIS INHIBITORY ACTIVITY HAS BEEN SHOWN TO BE ABOUT 22 KILODALTONS IN MOLECULAR WEIGHT AND TO INHIBIT IL-1 IN SEVERAL ASSAYS, NAMELY IL-1 MEDIATED THYMOCYTE PROLIFERATION, COLLAGENASE RELEASE BY ARTICULAR CHONDROCYTES, AND PGE(2) RELEASE BY BOTH SYNOVIAL AND DERMAL FIBROBLASTS. WE WILL PROD ...

THIS PROPOSAL SEEKS TO INVESTIGATE THE FEASIBILITY OF IMPROVING MAGNETIC ASW BY UTILIZING AN ON BOARD DIGITAL RECORD OF THE EARTH'S GEOMAGNETIC FIELD. MAGNETIC DETECTION TECHNIQUES FOR SUBMARINES REQUIRE SEPARATION OF THE SIGNATURE OF THE SUBMARINE FROM THE BACKGROUND FIELD. TESSERA PROPOSES TO DEVELOP A SYSTEM TO IMPROVE ANOMALY SEPARATION BY EMPLOYING EXISTING DIGITIZED GEOMAGNETIC FIELD DATA TO ...

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