Award Data

THE OBJECTIVE OF THIS PROGRAM IS TO DESIGN AND BUILD A STAPLER FOR PERFORMING END-TO-END AND END-TO-SIDE ANASTOMOSES ON MEDIUM TO LARGE VESSELS, AND FOR REPAIRING BLOOD VESSELS AND VASCULAR ANEURYSMS, AND TO DEVELOP A SURGICAL PROTOCOL FOR ITS USE. THE METHOD PROPOSED USES A SPECIAL STAPLER AND CONFIGURATION OF STAPLES WHICH MINIMIZESBLOOD CONTACT WITH THE STAPLES, DOES NOT RESTRICT THE FLOW OF BL ...

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THIS RESEARCH PROJECT WILL DEMONSTRATE THE TECHNICAL AND ECONOMIC FEASIBILITY OF A MAGNETIC SEPARATOR FOR OPERATION ON PULVERIZED COAL. A THEORETICAL COMPARISON OF THE SEPARATOR WITH WORK PUBLISHED ON OPEN GRADIENT MAGNETIC SEPARATION BY THE OAK RIDGE NATIONAL LABORATORY INDICATES THAT THE SEPARATOR WILL HAVE HIGH LEVELS OF ASH CLEANING. THIS IS BECAUSE OF ITS COUNTERCURRENT PRINCIPLE OF OPERATION ...

IF COAL WATER FUELS (CWF) ARE TO BE USED WITH THE CONVENIENCE AND RELIABILITY OF LIQUID OR GASEOUS FUELS, CHOICES MUST BE MADE IN SLURRY FORMULATION, COAL RANK, DEGREE AND METHOD OF CLEANING, ATOMIZATION TECHNOLOGY, COMBUSTION PARAMETERS, AND SORBENT ADDITIVES. A LABORATORY-SCALE METHOD IS NEEDED FOR TESTING CWF WHERE THE RESULTS CAN BE RELATED TO THE FUEL'S PERFORMANCE IN FULL-SCALE DEVICES. A RE ...

THE RECENT DISCOVERY OF HIGH TEMPERATURE SUPERCONDUCTING MATERIALS HAS LED TO RENEWED INTEREST IN THE APPLICATION OF SUPERCONDUCTIVITY. THE NEW CERAMIC SUPERCONDUCTORS OFFER THE OPPORTUNITY OF USING THESE MATERIALS AS DETECTORS OF INFRARED RADIATION MORE CONVENIENTLY THAT THE OLDER, CLASSICAL SUPERCONDUCTORS. THE LARGER ENERGY GAP OF THESE NEW HIGH CRITICAL TEMPERATURE (T(C)) MATERIALS ALSO PROVID ...

IT HAS BEEN DETERMINED IN BENCH SCALE AND PILOT SCALE COAL LIQUEFACTION EXPERIMENTS THAT A PRETREATMENT AT MODERATE TEMPERATURES PRIOR TO LIQUEFACTION CAN SUBSTANTIALLY IMPROVELIQUEFACTION YIELDS AND QUALITY. HOWEVER, THERE IS LITTLE BASIC UNDERSTANDING OF THE PROCESSES THAT GIVE RISE TO THE OBSERVED PHENOMENA. THIS PROJECT SUGGESTS THE IDENTIFICATION AND OPTIMIZATION OF THE PRELIQUEFACTION CHEMIS ...

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THIS STUDY WILL ATTEMPT TO DEVELOP A HIGH-RESOLUTION, INFRARED INSTRUMENT TO MONITOR CONCENTRATION LEVELS OF INDIVIDUAL ALKALI MOLECULAR SPECIES IN COMBUSTOR GAS STREAMS. THE FORMATION OF ALKALI SULFATES ON HOT COMBUSTOR SURFACES LEADS TO SEVERE CORROSION AND FOULING, RAISING OPERATING COSTS AND REDUCING EFFICIENCY. A MONITOR OF THE DOMINANT GAS-PHASE ALKALIS WOULD AID DEVELOPMENT OF MEASUREMENTS ...