Abstract:This proposal is aimed at the development of a gas pressure relief valve with modulating pressure control that provides for low- or no-impact during venting of low temperature cryogens in the range of pressures from 20 to 44 MPa. The development will concentrate on designs which provide inherent… more
Abstract:A NONDESTRUCTIVE ULTRASONIC METHOD CAPABLE OF QUANTITATIVELY EVALUATING THE BOND STRENGTH AND RESIDUAL INTERFACE STRESSES AT BRAZED JOINTS, SUCH AS CARBON/CARBON-COPPER USED IN FUSION REACTOR FIRST WALL STRUCTURES, IS PLANNED. THE MECHANICAL PROPERTIES AT THE INTERFACE CONTROL THE INTIMACY OF… more
Abstract:MOST ELECTROPOLISHING TREATMENTS FOR STAINLESS STEELS EMPLOY MULTIPLE OPEN MILDLY ACIDIC VESSELS. CONCERNS REGARDING FUMES AND CARRYOVER OF MORE AGGRESSIVE ACIDS MAKE COMMERCIAL TREATMENT FOR TITANIUM UNAVAILABLE. AN AUTOMATED ENCLOSED SINGLE TANK ELECTROPOLISHING MACHINE PROVIDES AN… more
Abstract:The object-oriented (OO) paradigm has demonstrated that it can produce software systems that are more reliable, have greater re-use capabilities, and are easier to understand, maintain, and modify. As the technology matures, the desire to convert large-scale, non-OO systems into OO systems increases… more
Abstract:A LOW VISION READING OR BIOPTIC TELESCOPE CAN BE DRAMATICALLY AN ORDER OF MAGNITUDE LESS IN COST THAN PRESENT MOUNTED TELESCOPES BY BEING CAST INTEGRAL WITH THE CARRIER SPECTACLE LENS. PREVIOUS SOLID TELESCOPE DESIGNS HAVE NOT USED ASPHERIC CURVES TO REDUCE ABERRATIONS NOR PLASTIC CASTING TECHNOLOGY… more
Abstract:SOFTWARE PERFORMANCE ENGINEERING (SPE) TECHNIQUES HAVE THE POTENTIAL TO REDUCE COST AND IMPROVE RELIABILITY OF SYSTEMS. THE TECHNIQUES ALLOW QUANTITATIVE ASSESSMENT OF THE PERFORMANCE CHARACTERISTICS OF EMERGING SOFTWARE SYSTEMS. THIS PERMITS THE SELECTION OF REQUIREMENTS AND DESIGN ALTERNATIVES… more
Abstract:Status epilepticus and seizures are life-threatening emergencies, especially in children. Whileintravenous (IV) drugs can rapidly halt seizures, gaining IV access in a struggling patient can be difficultto impossible. An established alternative to IV in pediatrics is intraosseous (IO) infusion into… more
Abstract:This grant will study the feasibility of developing convenient, cost-effective methods of synthesisfor L-sugar nucleoside and nucleotide analogue chemotherapeutic agents and to investigate theirphosphorylation and uptake by malignant cells in tissue culture. L-sugar-based therapeutic agents… more
Abstract:THE THREE-WAY CATALYTIC CONVERTER IS THE MOST IMPORTANT DEVICE MAKING TODAY'S AUTOMOBILES COMPLY WITH EXISTING EMISSION LAWS. THE FIRST TWO OR THREE MILES IN A TYPICAL 22-MINUTE, 12-MILE COMUTE IN TODAY'S VEHICLES RESULT IN THE EMISSION OF HALF OF THE TOTAL NON-METHANE HYDROCARBONS, WHICH RESULT IN… more
Abstract:Critical systems need protection from power failure in the field environment. The current generation of uninteruptible power supplies (UPS) is based on storage batteries. This severely limits power density and causes the size of the unit to rise rapidly as the discharge time required increases,… more
Abstract:Human presence in space for extended time periods will require closed regenerative life support systems in which water for crew use can be reclaimed from urine, hygiene waste waters and humidity condensate. New technology is required to provide for removal of impurities common to spacecraft waste… more
Abstract:Power requirements for manned U.S. spacecraft missions have been provided by fuel cells powered by cryogenic hydrogen and oxygen launched from earth. For long-term missions, propellant weight makes this approach prohibitive. Regenerative H2-O2 fuel cells have been identified as an enabling… more
Abstract:Soft tissue wounds normally heal via contracture and scar formation, and this repair process hasbeen shown to be accompanied by a measurable electrical field. However, many wounds (e.g., burns,decubitus ulcers) require assistance to heal. One means of improving this process has beenaugmentation of… more
Abstract:Multichip modules (MCM) technology is a technology that bridges the widening gap between the increasing complexity and speed of monolithic integrated circuit (IC) devices and the ability to package them in a system environment that preserves the inherent speed and thoughput of the devices. A wide… more
Abstract:AUTONOMOUS UNDERSEA VEHICLES (AUVS), SUBSEA ROBOTS, AND OTHER INSTRUMENTED AND REMOTELY OPERATED SYSTEMS FOR MARINE APPLICATIONS REQUIRE A POWER SOURCE WHICH IS AS EFFICIENT AS POSSIBLE TO GIVE LONG RANGE OR EXTENDED USE TIMES. THE OBVIOUS CHOICE IS AN ELECTROCHEMICAL UNIT OF FUEL CELL TYPE. … more
Abstract:DECONTAMINATION OF DENSE NONAQUEOUS PHASE LIQUIDS (DNAPLS) FROM SUBSURFACE SOILS AND GROUNDWATER FORMATIONS PRESENTS A COMPLEX ENVIRONMENTAL PROBLEM THAT HAS PROVEN EXTREMELY DIFFICULT TO REMEDIATE. THERE IS A CRITICAL NEED TO DEVELOP AND IMPLEMENT EFFECTIVE TREATMENT METHODS FOR DNAPL-CONTAMINATED… more
Abstract:At present, the only fuel cell systems that have the capability of achieving high power den W cm-2) are the proton exchange membrane (PEM) and the alkaline fuel cell (AFC) systems. Of these, the PEM system is the leading candidate fuel cell power source for many military and commercial applications.… more
Abstract:At present, four classes of structural adhesives (epoxy resins, phenolic resins, acrylic adhesives and urethanes) are commonly employed in applications where the adhesive joint is either totally immersed in salt or fresh water or subject to high levels of moisture while simultaneously experiencing… more
Abstract:THERE IS A RENEWED INTEREST IN FUEL CELLS AS PRIMARY POWER SOURCES FOR ELECTRIC VEHICLES. THE ACIDIC PROTON EXCHANGE MEMBRANE FUEL CELL OPERATES AT A MAXIMUM TEMPERATURE OF 95 DEGREES CENTIGRADE AND, AT PRESENT, RELIES ON THE USE OF PLATINUM-BASED ELECTROCATALYSTS. FOR ACID FUEL CELLS OPERATING AT… more
Abstract:Water is one of the basic commodities which will be needed in ever increasing quantities as industrialization and urbanization of the world progresses presenting many new challenges for the water processing industry. As new industrial products have been developed and manufactured with increasing… more
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