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A COMBUSTION-DRIVEN MAGNETOHYDRODYNAMIC (MHD) ELECTRIC POWER GENERATOR COMBINED WITH A STEAM POWERPLANT OFFERS A SIGNIFICANT INCREASE IN EFFICIENCY OVER THAT OF THE CONVENTIONAL STEAM POWERPLANT. THE MHD PROCESS, HOWEVER, PRODUCES AN AEROSOL THAT IS DIFFICULT TO COLLECT BECAUSE OF HIGH CONCENTRATIONS OF VERY SMALL PARTICLES (LESS THAN 1 MICROMETER). THIS RESULTS IN THE NEED FOR LARGE AND EXPENSIVE ...

PARAMETRIC-X-RADIATION (PXR) IS BEING INVESTIGATED IN PHASE I OF THIS PROJECT AS AN INTENSE, MONOCHROMATIC X-RAY SOURCE. THIS RADIATION IS HIGHLY COLLIMATED, HAS A BANDWIDTH OF 0.1% FULL WIDTH AT HALF MIXIMUM, AND AN INTENSITY EQUAL TO THAT OF SYNCHROTON RADIATION ON A PER ELECTRON BASIS. PXR IS PRODUCED BY A HIGH ENERGY (>1MEV) ELECTRON PASSING THROUGH A CRYSTALLINE STRUCTURE; AS THE ELECTRON PAS ...

IT IS THE INTENT OF THE INVESTIGATORS TO DEVELOP A NEW DIAGNOSTIC TEST FOR USE DURING PREGNANCY TO IDENTIFY WOMEN AT ELEVATED RISK FOR PRETERM DELIVERY (PTD). AN IMMUNOASSAY USING A MONOCLONAL ANTIBODY DIRECTED AGAINST ONCOFETAL FIBRONECTION (FFN), A PREGNANCY-RELATED PROTEN OF PLACENTAL ORIGIN FOUND IN THE AMNIOTIC FULID, HAS BEEN STANDARDIEZED FOR THIS PURPOSE. PRELIMINARY STUDIES HAVE SHOWN THA ...

ELECTRON BOMBARDED SEMICONDUCTOR (EBS) GAIN DEVICES USING SILICON DIODES HAVE APPLICATIONS IN FREQUENCY AGILE, RADIO FREQUENCY (RF)/MICROWAVE POWER AMPLIFIERS, PHOTOMULTIPLIERS,IMAGING TUBES, AND HIGH SPEED SIGNAL PROCESSORS SUCH AS ANALOG-TO-DIGITAL CONVERTERS. HOWEVER, COMMERCIAL ACCEPTANCE OF THESE DEVICES HAS BEEN LIMITED IN THE PAST BECAUSE OF THE DIFFICULTIES IN PROCESSING THE SILICON DIODES ...

DNA AND BIOSEQUENCES ARE BEING DETERMINED FASTER THAN THEY CAN BE COMPARED AND ANALYZED. PRESENT TECHNIQUES FOR RIGOROUSLY SEARCHING A LARGE DATABASE ARE COSTLY AND TIME CONSUMING. UNDER ALL PLAUSIBLE GROWTH PROJECTIONS, THE PROBLEM WILL SOON BECOME OVERWHELMING. A CUSTOM, VERY LARGE SCALE INTEGRATED CIRCUIT THAT COULD BE USED FOR HIGH SPEED COMPARISON, ANALYSIS, AND INTERPRETATION OF DNA AND PROT ...

DIAMOND AND COPPER ARE UNIQUE IN THEIR ABILITY TO EFFICIENTLY CONDUCT HEAT, MAKING THEM PREMIER MATERIALS FOR ELECTRONIC APPLICATIONS FOR WHICH HEAT REMOVAL IS CRITICAL TO SYSTEM PERFORMANCE. DIFFERENCES IN THEIR OTHER PROPERTIES MAKE IT ATTRACTIVE TO COMBINE THESE TWO MATERIALS INTO A DIAMOND/COPPER COMPOSITE THAT HAS IMPROVED PROPERTIES OVER THOSE OF COPPER ALONE. DIAMONDS OFFER A COST-EFFECTIVE ...

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THIS PROPOSAL WILL APPLY FOURIER TRANSFORM INFRARED (FT-IR) SPECTROSCOPY AS AN IN-SITU DIAGNOSTIC FOR THE DEPOSITION OF AMORPHOUS HYDROGENATED SILICON (A-SI:H). SUCCESSFUL PLASMA DEPOSITION OF A-SI:H ON A COMMERCIAL SCALE WILL REQUIRE SIMULTANEOUS KNOWLEDGE OF MANY PROCESS VARIABLES WITHIN THE PLASMA REACTOR. THESE VARIABLES INCLUDE 1) FILM THICKNESS, COMPOSITION (INCLUDING DOPING LEVEL), AND INDE ...

THE PARTICLES THAT ARE A NATURAL PRODUCT IN THE HOT GAS EXHAUST OF COAL GASIFIERS AND COMBUSTORS MUST BE REMOVED, OR THEY WILL CAUSE MAJOR DAMAGE TO DOWNSTREAM EQUIPMENT DESIGNED TO EXTRACT ENERGY FROM THE FLOW. A HOT, PARTICLE-LADEN EXHAUST IS AN EXTREME ENVIRONMENT THAT PLACES SEVERE CONSTRAINTS ON THE MATERIALS AND PROCESSES USED IN THE VARIETY OF DEVICES THAT MIGHT REMOVE THESE PARTICLES. THE ...

SIGNIFICANT IMPROVEMENTS IN EFFICIENCY FOR COAL-FIRED POWERPLANTS CAN BE ACHIEVED BY CYCLES THAT EMPLOY A HIGH TEMPERATURE, HIGHLY RECUPERATIVE GAS TURBINE TOPPING CYCLE. THE PRINCIPAL DIFFICULTY IN EMPLOYING A GAS TURBINE IN A COAL FIRED POWER GENERATION SYSTEM IS THE POSSIBLE EROSION AND CORROSION OF THE HIGH TEMPERATURE ROTATING GAS TURBINE COMPONENTS CAUSED BY THE COAL'S INORGANIC AND ORGANICA ...