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EPPI proposes to develop a miniaturized pulsed power generator that produces a short duration, high current and high voltage pulse. The chemical energy available from high explosives is 5000 Joules per gram. The challenge is to efficiently convert the chemical energy to electrical energy. Flux Compression Generator (FCG) efficiencies of several percent have already been demonstrated. A 5 cubic ...

Bends in waveguides are a problem for high-voltage Ultra-Wideband (UWB) systems. The difficulty arises because only a straight section of standard transmission line can support a pure TEM mode. And a pure TEM mode is necessary to preserve the risetime of the transmitted impulse. When there is a bend in the waveguide, the transmitted signal is a broader impulse than the incident signal. This ca ...

Ultra-Wideband (UWB) systems are currently needed to serve a variety of Navy missions. One of the components of UWB systems that requires much careful thought and innovation is the antennas, since most of the classical antennas are useful only for more narrow bandwidths. Recently, a class of antenna known as Impulse Radiating Antennas (IRA) have received considerable attention. Th ...

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The near-field scanning optical microscope can supply information on the shape and electrical properties of surfaces with nanometer resolution. The quantitative interpretation of images is difficult because of the difficulty of electromagnetic field solutions in the near-field limit. We propose to supply software to aid in this analysis. The finite-element programs generate two and three-dimension ...

Modern medical equipment has become increasingly vulnerable to disruption by external signals. Electromagnetic Interference (EMI) from both medical and non-medical systems has been blamed for a variety of disruptions, in some cases leading to death. The high cost of EMI has prevented manufacturers from carrying out extensive characterizations of their systems. Fiore intends to reduce the cost p ...

The objective of this project is to evaluate the efficacy of the FLP/FRT site-specific recombinase inexcising a transgenic tapetum-specific promoter driving an inverted (antisense) Arabidopsis fertilitygene, bcl1. Plants containing the antisense of bcl1 (flanked by FRT sites) will be male sterile and whencrossed to plants containing the FLP site-specific recombinase, FLP should excise the sterili ...

180 Ultra-Lightweight Carbon-Carbon Cooling Structure For Pixel and Silicon Strip Detectors-HYTEC, Inc., 110 Eastgate Dr., Suite 100, Los Alamos, NM 87544-3304; (505) 662-0080 Mr. William O. Miller, Principal Investigator Mr. William O. Miller, Business Official DOE Grant No. DE-FG03-97ER82397 Amount: $75,000 Removal of heat from the next generation of particle detection systems used in high ...

Society is currently plagued by the disposal of post consumer plasti c waste products which represent 30% by volume of the National solid waste stream. The Navy has particular problems when a vessel is at sea with several thousand men consuming foods and beverages contained in plastic. The plastic waste volume becomes both a sanitation and storage problem. At sea, dumping is no longer permit ...

In soybean-based animal feeds, the two galacto-oligosaccharide (raffinose and stachyose) present majorobstacles in accessing the full nutritive value of the soybean meal portion of the diet by chickens andturkeys. The problem is caused by the inability of these animals to hydrolyze raffinose and stachyoseinto galactose and fructose using endogenous digestive enzymes. Consequently, soybean meal h ...