Abstract: A method of forming fiber reinforced polymer matrix composite structures having a low volume fraction of fiber reinforcement and carefully controlled thicknesses is provided. The method enables the production of composite structures having a fiber volume fraction of less than about 0.5 through the use of vacuum bag molding, thereby eliminating the need for expensive closed molds, The method also eliminates the occurrence of “racetracking” of uncured resin during the resin infusion process.

Abstract: A device for generating and radiating pulses of radio frequency/microwave energy in response to pulses of laser light in which a metal layer is ohmically bonded to each side of a substrate of semiconductior material and an antenna bowtie pattern is ohmically bonded to the metal layers to form a feed structure for a Luneburg lens type antenna. There is at least one aperture available on the substrate of the semiconductor material for permitting laser light to reach the disk to produce photoconduction. The photoconductive switch is electrically connected to the storage device to facilitate fast discharge of the stored energy through the switch. The feed structure is mounted on a motorized support stand, which is connected to a center post by an arm that can rotate 360° in the azimuthal direction and ±90° in elevation. The feed structure is located on the outermost shell of the Luneburg lens, and is concave to conform to the focal radius of curvature of the outermost shell.

Abstract: An apparatus using field emission techniques to limit voltage on RF transmission lines. A voltage limiter comprises a cathode and an anode housed in an airtight tube, whereby the cathode comprises a field emitter array having a plurality of field tips distributed about the surface of an insulating layer, and a microstrip transmission line overlying the insulating layer and having a predetermined width to form electrical contact with a selected group of the field tips. The microstrip transmission line enables propagation of electromagnetic microwave energy over a bandwidth of multiple octaves. The field emitters enable the generation of a flow of electrons at a predetermined breakdown threshold voltage, without the necessity for an external source to induce electron flow. Generation of the electron flow by the field tips creates a reflection wave on the transmission line that interferes with the incident electromagnetic energy to limit the voltage on the transmission line.

Abstract: An active damping method and a self-contained active damping system that can be retrofitted to existing rockets are provided which for reducing the dispersion of rockets by using lateral thrusters to oppose any initial yawing motion. The self-contained system of the present invention can be installed in a cylindrical section of a rocket body by insertion between other flight body parts.

Abstract: A payload carrying device which is inserted into a remote area of interest by means of a projectile carrier to obtain data, or the like, from the remote area. The device has counter rotating main blades as well as tail blades carried on a tail rotor. The particular payload is carried in a canister which may also include a power source, a command and control unit and a motor, if hover or lateral flight is desired. The pitch of the tail blades is variable as well as their orientation around an axis, the combination of which generates a thrust vector in a particular direction for controlled lateral flight.

Abstract: The invention discloses the utilization of various transmission lines that entail a ferroelectric material as dielectric substrate to introduce an impedance shift by means of an externally applied d.c. bias, which alters the effective length between the input and output signals of the transmission lines of microwave couplers.

Abstract: An electrode for a rechargeable lithium-ion battery is formed by mixing stanous oxide (SnO) and lithium nitride (Li3N) in a stoichiometric ratio of 2 moles of Li3N to 3 moles of SnO to form a mixture, milling the mixture to obtain a milled powder, and processing the milled powder in accordance with an electrode-forming technique. The electrode forming technique can be any one of die pressing, spraying, doctor-blading and rolling. Conductive additives, such as carbon and binders (PVDF, cellulose and Teflon), can be introduced during the processing step. Preferably, the method is carried out in a dry, inert atmosphere of argon or helium. As a result of the invention, a smaller, lighter and more efficient lithium-ion battery is produced.

Abstract: A dermal substance collection device (DSCD) is described which provides ms for the non-invasive, instantaneous and continuous monitoring of chemical substances which are present in a detectable amount in either or both interstitial fluid or sweat or which are on or in the skin. The transdermal substance collection device of this invention is comprised of three essential components: (1) a substance binding reservoir, wettable by (2) a liquid transfer medium which allows for liquid bridge transfer of a soluble substance from the skin surface to the binding reservoir by virtue of its wettability by the liquid, and (3) an occlusive cover.

Abstract: This invention is directed to a method for inducing protection in an animal gainst poisoning resulting from exposure to toxic levels of cyanide comprising orally administering to said animal a therapeutically effective amount of a compound having the formula: ##STR1## wherein R represents ##STR2## R.sub.1 and R.sub.2 represent hydrogen, methyl or ethyl; R.sub.3 represent hydrogen, alkyl having 1 to 4 represents hydrogen, alkyl having 1 to 4 carbon atoms or alkoxy having 1 to 4 carbon atoms; R.sub.4 represents hydrogen or alkyl having 1 to 4 carbon atom; R.sub.5 represents hydrogen, alkyl having 1 to 7 carbon atoms, alkoxy having 1 to 7 carbon atoms, phenyl phenoxy, or substituted phenyl or phenoxy groups having the formula ##STR3## R.sub.6 represents hydrogen, alkyl having 1 to 4 carbon atoms, or alkoxy having 1 to 4 carbon atoms; R.sub.7 represents hydrogen, methyl or ethyl; R.sub.8 and R.sub.

Abstract: This invention is directed to a fiber collection and storage device comprising in combination (1) a stable, transparent carrier base material preponderate on a surface thereof with a grid and label, the grid having uniquely identified areas wherein collected fibers are located and the label providing identification indicia, (2) an adhesive layer is disposed on the surface of the carrier base material, the adhesive layer being capable of collecting and recovering transferred-fibers from textile articles, and (3) a transparent and flexible cover for occlusively covering the adhesive layer and the method for using the device.

Abstract: This invention relates to novel dihydroartemisinin derivatives, including their pharmaceutically-acceptable salts, which are therapeutically-effective in the pre- and post-treatment of malarial infections.

Abstract: A method for data compression provides for an improved digital facsimile ument transmission system. The mixed mode method provides that symbols can be located both individually and as a part of a line of symbols in order to provide for efficient operation for both the symbol and graphic portions of a document to be transmitted without requiring that the symbols be organized in lines or that each location be conveyed independently of all other locations of symbols.