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THE BIOCHEMICAL AND SYNTHETIC CAPACITY OF HIGHER PLANTS, AS SHOWN BY THEIR NATURAL CONTENT OF SUBSTANCES, HAS BEEN USED FOR CENTURIES IN SUPPLYING MATERIALS IMPORTANT IN PHARMACOLOGY AND IN FLAVORS AND FRAGRANCES. MANY OF THESE SECONDARY PRODUCTS ARE IN SHORT SUPPLY AND AN ENORMOUS EFFORT HAS TO BE EXTENDED TO GET THEM. ATTEMPTS TO USE CELL CULTURES OF HIGHER PLANTS AS A MEANS OF PRODUCING SECONDA ...

SUPER ACCURATE ADAPTIVE COMPUTATIONAL SCHEMES FOR THE ANALYSIS OF FLUID STRUCTURE INTERACTION AND COMPLEX THREE-DIMENSIONAL INTERNAL FLOWS ARE TO BE DEVELOPED. NEW PETROV-GALERKIN FINITE ELEMENT METHODS FOR SOLVING THE NAVIER-STOKES EQUATIONS. COUPLED WITH THE EQUATIONS OF MOTION OF ELASTIC DUCTS AND MANIFOLDS, ARE TO BE DEVELOPED AND USED TO SIMULATE FLOWS IN AEROSPACE PROPULSION SYSTEMS (SUCH AS ...

THE GOAL OF PHASE I IS DEVELOPMENT OF AN ADVANCED OPTICALLY PUMPED HELIUM MAGNETOMETER CONCEPT. THIS INSTRUMENT WILL MEASURE MAGNETIC FIELDS IN THE 1 TO 10-8 GAUSS RANGE WITH ORDER OF MAGNITUDE IMPROVEMENTS IN SENSITIVITY AND ABSOLUTE ACCURACY OVER EXISTING MAGNETOMETERS. OPTICALLY PUMPED HELIUM ISOTOPES CAN BE OPTICALLY PUMPED AND USED AS MAGNETOMETERS IN THE FOLLOWING THREE MODES: (1) VECTOR MOD ...

THE CONTRACTOR SHALL DEVELOP A FUZZY SET METHODOLOGY FOR UNCERTAINTY ANALYSIS IN PROBABILISTIC SEISMIC SAFETY ASSESSMENT OF NUCLEAR POWER PLANTS. FUZZY SET LOGIC WILL BEUSED FOR COLLECTING, QUANTIFYING AND PROPAGATING SUBJECTIVE,ENGINEERING JUDGEMENT USED IN THE UNCERTAINTY ANALYSIS. IN PHASE I, FEASIBILITY OF THE PROPOSED APPROACH WILL BE DEMONSTRATED BY APPLYING IT TO SELECTED PARTS OF A PROBABI ...

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IT IS GENERALLY ACCEPTED THAT HIGHER PLANTS WILL SERVE AS IMPORTANT COMPONENTS OF ENVIRONMENTAL CONDITIONING AND FOOD PRODUCTION SYSTEMS FOR FUTURE SPACE OR PLANETARY SURFACE HABITATS. BECAUSE OF STRUCTURAL CONSIDERATIONS IT IS LIKELY THAT ATMOSPHERIC COMPOSITION AND PRESSURE WILL BE RADICALLY DIFFERENT. IN DEFINING GROWTH SYSTEMS FOR ALTEREDATMOSPHERES WE MUST UNDERSTAND HOW PLANTS OPERATE IN GEN ...

THIS RESEARCH ATTEMPTS TO ADVANCE THE STATE-OF-THE-ART OF BALLOON DESIGN BY DEVELOPING A METHOD TO REALISTICALLY APPROXIMATE THE STRESS LEVELS IN AN ASCENDING BALLOON. THE APPROACH WILL BE TO COMBINE EXISTING STUDIES ON ASCENT SHAPES, MATERIAL PROPERTIES, AND HEAT TRANSFER MECHANISMS TO PRODUCE A FIRST ORDER ESTIMATE OF STRESSES IN THE WALL OF A BALLOON WITH EITHER INTERNAL OR EXTERNAL CAPS. THE F ...

A PROTOTYPE OF A PORTABLE IMAGE PROCESSING SYSTEM WILL BE CONSTRUCTED USING A LAPTOP MICROCOMPUTER, AN OPTICAL WORM DISK, APPROPRIATE COLOR DISPLAY SUBSYSTEM, AND MODIFICATIONS AND ADDITIONS TO AN EXISTING SOFTWARE PACKAGE WRITTEN IN C AND CURRENTLY RUNNING ON THE DESKTOP IBM PC, XT, AND ATS. THE UNIT WILL ALSO FUNCTION AS A COMPUTER AIDED IMAGE PROCESSING (CAIP) STATION IN A NETWORK OR WITH A MAS ...

NASA IS CONTINUALLY DEVELOPING NEW SYSTEMS RANGING FROM COMPUTER SOFTWARE TO TEST FACILITIES TO LARGE SPACECRAFT. EACH SYSTEM DEVELOPMENT IS INITIATED AND CONTROLLED THROUGH THE USE OF REQUIREMENTS SPECIFICATIONS. THE PROPOSED STUDY WILL DETERMINE THE FEASIBILITY OF DEVELOPING AN AUTOMATED TECHNICAL DOCUMENTATION SYSTEM FOR A DESK TOP COMPUTER. THE SYSTEM WILL BE PROTOTYPED TO DEVELOP AND TEST CON ...

THE MAJOR PORTION OF THE EFFORT WILL BE TO DEVELOP A CO:MGF2 LASER SYSTEM SUITABLE FOR USE IN POSSIBLE NASA MISSIONS. MOST OF THE WORK ON CO:MGF2 LASERS HAS INVOLVED THE USE OF LIQUID NITROGEN FOR COOLING OF THE CRYSTAL, A MAJOR INCONVENIENCE FOR PRACTICAL APPLICATIONS. THE PROPOSED RESEARCH WOULD, BY A COMBINATION OF THEORETICAL ANDEXPERIMENTAL WORK, INVESTIGATE OPERATION OF THE CO:MGF2 LASER AT ...