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A NEW MACHINING TECHNIQUE, DESCRIBED AS A CROSS BETWEEN A WIRE EDM (ELECTRIC DISCHARGE MACHINE) AND AN ECM (ELECTROCHEMICAL MACHINE), IS BEING INVESTIGATED. THE METAL REMOVAL PROCESS INVOLVES THE ANODIC DISSOLUTION OF THE WORKPIECE IN CLOSE PROXIMITY TO A MOVING WIRE, SIMILAR TO THE SPARK EROSION MACHINING OF A WORKPIECE PRODUCED BY A MOVING WIRE IN CURRENTLY AVAILABLE WIRE EDM EQUIPMENT. ONE DISA ...

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ONE OF THE MOST ACTIVE AND CHALLENGING FIELDS IN MOLECULAR BIOLOGY TODAY IS THE GENETIC STUDY OF EUKARYOTIC SYSTEMS. AN ESSENTIAL, BUT OFTEN RATE LIMITING STEP IN THIS AREA IS THE SCREENING OF DNA LIBRARIES FOR GENE ISOLATION. THIS PROCEDURE USES RADIOLABELED HYBRIDIZATION TECHNIQUES AND AUTORADIOGRAPHY TO ACHIEVE THE REQUIRED SENSITIVITY AND SPECIFICITY. THE PARTICULAR PART OF THE PROCESS WHICH T ...

NEW TECHNIQUES FOR DIGITAL X-RAY IMAGING HAVE BEEN UNDER INVESTIGATION FOR DECADES. SOME OF THE MOST PROMISING TEECHNIQUES INCORPORATE SOLID-STATE X-RAY DETECTORS, WHICH ARE ATTRACTIVE BECAUSE OF THEIR COMPACTNESS. HIGH-Z SEMICONDUCTOR X-RAY DETECTORS HAVE FURTHER ADVANTAGES DUE TO THEIR HIGH STOPPING POWER. ONE OF THE DRAWBACKS OF HIGH-Z SEMICONDUCTOR DETECTORS IS THE COST OF PRODUCING LARGE-AREA ...

BECAUSE OF THE UNIQUE PROPERTIES OF DIAMOND, RECENTLY DEVELOPED CHEMICAL VAPOR DEPOSITED (CVD) DIAMOND THIN FILMS COULD BE USED IN A WIDE VARIETY OF APPLICATIONS FROM ELECTRONICS TO CUTTING TOOLS, INFRARED OPTICS TO ABRASIVES. HIGH QUALITY DIAMOND FILMS ARE PRESENTLY GROWN AT RATES OF ABOUT 1 MICRON/HR. CRUCIAL TO THE SUCCESSFUL COMMERCIALIZATION OF THE TECHNOLOGY IS THE ATTAINMENT OF LARGER GROWT ...

SILICON CARBIDE IS A LEADING NEW CANDIDATE FOR MIRROR BLANKS BECAUSE OF ITS HIGH STIFFNESS, RELATIVELY HIGH THERMAL CONDUCTIVITY, AND ABRASION RESISTANCE. THE BASE MATERIAL CONTAINS PORES OR LARGE GRAINS, WHICH MAKE IT DIFFICULT TO PROVIDE A SMOOTH FRONT SURFACE. RESEARCHERS HAVE DEVELOPED A PROCESS FOR USING ECR CHEMICAL VAPOR DEPOSITION TO DEPOSIT VERY SMOOTH AMORPHOUS SILICON CARBIDE (SIC) ON 1 ...

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ASPEN SYSTEMS PROPOSES AN INNOVATIVE APPARATUS FOR REMOTE MEASUREMENT OF CLOUD AND FOG PARAMETERS, SUCH AS WATER CONTENT. THIS LIDAR APPARATUS USES STATE-OF-THE-ART LASER TECHNOLOGY TO MEASURE THE PROPERTIES OF A CLOUD OR FOG (CONSTITUENT, WATER DROPLET SIZE AND CONCENTRATION) REGARDLESS OF AMBIENT LIGHT CONDITIONS (DAY OR NIGHT) OR LOCATION OF DEPLOYMENT (GROUND BASED OR AIRBORNE). THE PROPOSED L ...

ASPEN SYSTEMS PROPOSES TO DEVELOP HIGH DIECTRIC CONSTANT (K) SELENIUM POLYMERS TO MEET THE DESIGN OBJECTIVES OF HIGH ENERGY DENSITY CAPACITORS (HEDC) FOR ENERGY STORAGE IN PULSED POWER SYSTEMS (15 TO 45 MJ/kg). IN THE PROPOSED PHASE I WEL WILL SYNTHESIZE HIGHLY PROCESSABLE, Se BASED POLYMERS AND FABRICATE SAMPLES OF FILM FOR DIELECTRIC ANALYSIS. INITIAL, RIGOROUS CALCULATIONS HAVE BEEN PERFORMED B ...

THERMOPLASTICS ARE NOT WIDELY USED IN POLAR REGIONS BECAUSE THEY EMBRITTLE AND MAY LOSE 70 PERCENT OF THEIR FRACTURE TOUGHNESS AT LOW TEMPERATURES. RESEARCHERS HAVE IDENTIFIED A PROMISING MICROCELLULAR FOAM (MCF) STRUCTURE WHICH MAY SIGNIFICANTLY IMPROVE LOW TEMPERATURE THERMOPLASTIC PERFORMANCE. MCF FOAM STRUCTURE IS CREATED BY INDUCED THERMODYNAMIC INSTABILITY IN PLASTICS SUPERSATURATED WITH INE ...