Abstract: A method of providing electronic shielding comprising providing a layer of a polyaniline composition on the object to be shielded, whereby the entrance and egress of electromagnetic radiation is prevented. Also presented herein is a method of changing the absorption by a polyaniline composition of electromagnetic radiation by modifying the chemical structure and crystallinographic order of the polyaniline composition, wherein said composition comprises a composition of the formula ##STR1## where y can be equal to or greater than zero, and R.sup.1 and R.sup.2 are independently selected from the group consisting of --H, --OCH.sub.3, --F, --Cl, --Br, --I, --NR.sup.3.sub.2, --NHCOR.sup.3, --OH, --O, --SR.sup.3, --OR.sup.3, --OCOR.sup.3, --NO.sub.2, --COOH, --COOR.sup.3, --R.sup.3 SO.sub.3 H, --COR.sup.3, --CHO, and --CN, where R.sup.3 is a C.sub.1 to C.sub.8 alkyl, aryl, or aralkyl group.

Abstract: A microminiature Stirling cycle engine or cooler is formed utilizing semiconductor, planar processing techniques. Such a Stirling cycle thermomechanical transducer has silicon end plates and an intermediate regenerator. The end plates are formed with diaphragms and backspaces, one end plate forming the expansion end and the opposite end plate forming the compression end, with the regenerator bonded in between. A control circuit apparatus is linked to the diaphragms for controlling the amplitude, phase and frequency of their deflections. The control circuit apparatus is adapted to operate the transducer above 500 Hz and the passages and the workspace, including those within the regenerator, expansion space and compression space, are sufficiently narrow to provide a characteristic Wolmersley number, which is characteristic of the irreversibilities generated by the oscillating flow of the working fluid in the workspace, below substantially 5 at the operating frequency above 500 Hz.

Abstract: A method for measuring the complex impedance spectrum of a portion of the myocardium by placing two electrodes on a portion of the myocardium and applying a current pulse to the electrodes to generate a voltage response between the electrodes. Both the current pulse and voltage response are sampled and digitized and then a Fast fourier transform is taken of both the current pulse and the voltage response to obtain a complex current pulse spectrum and a complex voltage response spectrum. Next, the complex voltage response spectrum is divided by the complex current pulse spectrum to obtain the complex impedance spectrum.

Abstract: A hollow, rigid guide tube has a bend nearer to one end than the opposite end. The bent end of the guide tube is inserted through an animal's mouth and esophagus, and into its stomach. The bent end is pressed against the interior of the animal's stomach by manipulating the opposite end which extends out of the animal's mouth. A needle is pushed through the animal's skin and into the stomach end of the guide tube. A fiber is passed through the needle and into and through the whole guide tube. The fiber then extends from outside the animal's abdomen through the stomach wall, through the esophagus and out the animal's mouth. The guide tube and needle are removed and a gastrostomy tube is fastened to the mouth end of the fiber and is pulled into the stomach sidewall in the conventional manner. The guide tube preferably has an outwardly flared surface at one end and has an annular disk attached near the opposite end of the tube.

Abstract: Shaped refractory ceramic and refractory ceramic composite objects are made from corresponding shaped, oxidation-resistant-metal-bearing objects through exposure to an oxidizing environment without substantial changes in dimensions by providing in the shaped metal-bearing objects a combination of a) metals which when oxidized form a ceramic compound with a larger molar volume than the molar volume of the metals consumed to make the ceramic compound with b) metals which when oxidized form a ceramic compound with a smaller molar volume than the molar volume of the metals consumed to make the ceramic compound.

Abstract: A separation process includes producing low temperature glassy carbon from an aromatic oligomeric precursor with acetylene groups and using the resultant glassy carbon as the stationary phase in a separation process. Glassy carbon with preselected selectivity and retention characteristics can be generated by controlling the temperature of which the glassy carbon is processed.

Abstract: A baseball or softball glove comprising a shell having a concave, frontal, ball-receiving surface and a rear surface to which a handpiece is attached. The handpiece may be removably or permanently attached and may comprise finger receiving loops formed on the rear surface of the shell. The handpiece is preferably a tight fitting, leather or fabric glove. The preferred shell comprises a sheet-like, flexible skin of a selected flexibility attached to a structural skeleton having a lower flexibility than the skin.A plurality of raised bumps are formed on the ball-receiving surface of the shell near a palm region and around the outer perimeter. Elongated slots are formed through the shell, extending generally parallel to and between finger regions, and in a web region. Preferred lines of flexure are formed at at least one end of each slot, and are localized, thinned regions, along which the shell preferably flexes.

Abstract: The coating of shredded paper insulation with a powdered or particulate fire retardant agent mixed with an anti-static agent to enhance coating is further improved by applying a precoat of a mixture of fire retardant agent and anti-static agent, the precoat mixture containing only a relatively minor portion of the final fire retardant coating, and subsequently coating the paper particles with the remaining fire retardant agent.

Abstract: A particulate moisture measurement gauge of the type using a resonant electric circuit connected to a diode detector and to an AC signal generator having a frequency near the resonant frequency of the resonant circuit and in which the resonant circuit is electrically coupled to the particulate by a capacitor having the particulate as its dielectric. A probe is formed as a transmission line having a length which is approximately an integral number of one quarter wave lengths long. One end of the transmission line is connected to the circuitry and its opposite, moisture sensing end is immersed in the particulate. Preferably the probe is a rigid, conductive tube with a central rod having a ceramic insulator sealing its moisture sensing end and the circuitry housed in its opposite end.

Abstract: Articulator for simulating jaw movements comprising an upper and a lower part for carrying an upper-jaw and/or lower-jaw model and connected by joints permitting one or more swivelling and linear motions, in which in the joint the lower part is guided relative to the upper part in one or more directions comprising components of motion in the cranial and/or dorsal direction and corresponding to surtrusion and/or retrusion.

Abstract: Free piston Stirling coolers and engines are improved by a spring coupling the displacer to the piston and having a variable spring constant. Controllable variation of its spring constant permits controllable variation of displacer stroke, engine power output and cooler thermal pumping rate and thus the invention is useful for stroke limiting and load matching.

Abstract: Prosthetic bone implants are fabricated to approximately replicate a patient's original bone. Medical computer aided imaging techniques are applied to generate a data base representing the size and shape of the original bone in a three dimensional coordinate system. The implantable replica is fabricated using the data base and free form manufacturing to sequentially solidify adjoining, cross-sectional intervals of a fluid material. Appropriate fluid materials include ceramic particles which may be selectively bonded by sintering or bonding with a polymer, and a monomer which is polymerized at selected regions by an incident laser beam.

Abstract: Glass ionomer cements for dental restoratives with improved physical properties are produced by the present invention. Acryloyl and methacryloyl derivatives of amino acids are used in the invention to copolymerize with acrylic acid, methacrylic acid or various acrylic acid-comonomer mixtures to produce water soluble polycarboxylic acids.

Abstract: A photometric gauge for measuring the diameters of a workpiece turned about a central axis. The apparatus comprises a light source which scans a light beam across and on either side of a workpiece, to reflect scanned light from a mirror having an approximately elliptical curvature. The light source is located at one focus of the elliptical mirror and a light detector is located at the other focus. Light passing beside the workpiece from the light source focus reflects back to the light detector focus, and the light detector generates an electrical signal. The signal is used by an electronic data processor, along with known geometric parameters, to determine the diameter of the workpiece. A profiler, using the above photometric gauge, takes diameter measurement at regular intervals along the axis of the workpiece, and plots the diameter versus axial position data.

Abstract: A board game comprising a game board having a planar playing surface, a goal at each opposite longitudinal end of the game board, a ramp at each opposite longitudinal end of the game board, a large target ball, a plurality of smaller projectile balls and a railing supported above the playing surface around the outer peripheral edges of a playing field. A network of channels and troughs under the game board channel the balls to desired reservoirs. Projectile balls are rolled down the ramps, onto and across the playing surface with the object of striking the target ball and driving it into the opposing goal.

Abstract: A slot antenna formed in combination with a vehicle window. An electrically conducting, optically transparent film panel is bonded to the window and terminates so that its outer peripheral edge is spaced from the innermost edge of the metal framing the window to define a polygonal antenna slot between the edges. An unbalanced transmission line is connected to the antenna by connecting the grounded conductor to the framing metal near the metal edge and coupling the ungrounded conductor to the conductive panel near the juxtaposed, interfacing edge of the conductive panel.

Abstract: A method for measuring the swing time of a golfer's swing and selecting a golf club having the inverse of four times its natural frequency which is approximately equal to the swing time. The golfer's swing time is defined as the time elapsed between maximum acceleration of a club head during downswing until ball impact. In the preferred embodiment, an accelerometer is mounted within the club head and is connected to an electronic data processor. A graph of club head acceleration versus time is plotted and the swing time is measured from the graph, between peak acceleration and ball impact.

Abstract: An injection molding apparatus comprising two spaced, parallel lower guide rods mounted to an undercarriage. A ram carriage and a barrel carriage are slidingly mounted on the lower guide rods. A feedscrew ram extends from the ram carriage into a tunnel formed in the barrel carriage to inject plastic out of a nozzle attached to the end of the barrel farthest from the ram carriage, and into a mold. Two spaced, parallel upper guide rods extend from the barrel carriage to slidingly engage the ram carriage. A pair of hydraulic cylinders displace the ram carriage with respect to the barrel carriage. A third hydraulic cylinder displaces the barrel carriage with respect to the undercarriage. The undercarriage, pivotally mounted to a base, is pivoted by a screw jack which displaces the undercarriage about an arcuate path.

Abstract: Molten metal dispensed upon the surface of an adjacent rotating drum produces a ribbon of solidified metal which separates from the drum while the drum is rotating. To prevent ripples from forming in the surface of the ribbon, a casting surface on the periphery of the rotating drum includes structure to minimize the ratio of transverse heat flow rate from the casting surface to radial heat flow rate.