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ANALYTICAL INSTRUMENTATION BASED ON X-RAY FLUORESCENCE EXCITATION AND DIFFRACTION ARE VITAL COMPONENTS OF BOTH INDUSTRIAL PROCESS CONTROL/QUALITY ASSURANCE LABORATORIES AND MATERIALS RESEARCH FACILITIES. THE APPLICATION OF THESETECHNIQUES FOR THE INSPECTION OF MICROSCOPIC AREAS IS INCREASINGLY MORE IMPORTANT AS NEW STRUCTURAL AND ELECTRONICCOMPONENTS ARE ENGINEERED ON THE MICRON SCALE. ARACOR PROP ...

THIS PROPOSAL OUTLINES A SIMPLE YET ACCURATE APPROACH TO MEASURING THE POSITION AND ORIENTATION OF A ROBOT. THE MECHANISM CAN BE USED TO MAKE BOTH STATIC AND DYNAMIC MEASUREMENTS. TWO VERSIONS OF THE DESIGN ARE PROPOSED; THE FIRST VERSION HAVING HIGH ACCURACY OVER A SMALL WORK VOLUME,AND THE SECOND VERSION HAVING LOWER ACCURACY OVER A WORK VOLUME WHICH WOULD ALLOW POSE MEASUREMENT OVER THE ENTIRE ...

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THE DISSEMINATION OF TIMELY WEATHER DATA IS BECOMING INCREASINGLY IMPORTANT AS THE POPULATION DENSITY OF THE UNITED STATES INCREASES. AS THE SOLE GOVERNMENT OPERATED RADIO SYSTEM PROVIDING DIRECT WARNINGS TO PRIVATE HOMES, THENOAA WEATHER RADIO (NWR) SYSTEM IS CRITICAL FOR DISSEMINATING NATURAL DISASTER WARNINGS AND THE TIMELY DISSEMINATION OF WEATHER DATA. THE NEED FOR A LOW COST, REAL TIME COVER ...

THREE ASPECTS OF CLIMATE CHANGE INVOLVING VERY HIGH TROPICAL CLOUDS ARE: (1) WHETHER CHANGES IN HIGH CLOUD PARAMETERS LEAD TO POSITIVE OR NEGATIVE FEEDBACK IN CO2 EFFECTS ON CLIMATIC TEMPERATURE CHANGES; (2) DO CHANGES IN THE HEIGHTS OF CLOUD TOPS AND CLOUD AMOUNT, OR CLOUDS WHICH REACH TO THE TROPICAL TROPOPAUSE, AFFECT THE AMOUNT OFWATER VAPOR IN THE LOWER STRATOSPHERE AND INDIRECTLY THE ANTARCT ...

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THE RAPIDLY GROWING AQUACULTURE INDUSTRY IS DEDICATED TO PRODUCING FOOD FISH IN CAPTIVITY. AMONG THE MANY PROBLEMS CURRENTLY FACING THE COMMERCIAL AQUACULTURE INDUSTRY ARE DIFFICULTIES IN RAPIDLY AND ACCURATELY IDENTIFYING THE SEX AND SEXUAL MATURITY OF PUTATIVE BREEDING STOCK. THIS IS DIFFICULT BECAUSE OF THE LACK OF SEXUAL DIMORPHISM AMONG MANY FISH OF COMMERCIAL IMPORTANCE. VITELLOGENIN, AN EGG ...

A NEW PROGRAM AT NIST AIMS TO DEVELOP A FREE ELECTRON LASER (FEL) USER FACILITY TUNABLE WELL INTO THE ULTRAVIOLET. THE SHORT WAVELENGTH LIMIT OF OPERATION IS MAINLY DEPENDENT ON THE OPTICS PERFORMANCE. THE BEST KNOWN OPTICAL MATERIALSARE DEGRADED BY THE HARMONIC RADIATION PRODUCED UNAVOIDABLY DURING FEL OPERATION. THE DEVELOPMENT OF IMPROVED MATERIALSFOR THIS APPLICATION REQUIRES THE MEASUREMENT ( ...

SPECIAL MILITARY NARROW BEAM ACOUSTIC PROJECTORS AND TRANSMISSION TECHNIQUES CAN BE EASILY ADAPTED FOR COMMERCIAL USE TO ENABLE FISHERMEN OR RESEARCHERS TO DETECT,LOCATE, AND QUANTIFY BIOLOGICAL TARGETS WITH VERY HIGH ACCURACY IN SHALLOW WATER. THE PROPOSED EFFORT WILL PROVIDE A METHOD FOR PRODUCING VERY NARROW ACOUSTIC BEAMS WITH VIRTUALLY NO SIDELOBES FROM A SMALL APERTURE PROJECTOR ARRAY. ALSO ...