Abstract: A carbon cathode structure is described comprising an aggregate of discrete, porous, semi-rigid carbon conglomerates which are impressed from both sides onto a screen-like substrate for physical support thereby. The substrate additionally functions as a current collector by uniformly and electrically contacting the interior of the resulting structure. Electrolyte-conducting channels formed between adjacent conglomerates of the thick, porous cathode structure serve to maximize the cell rate capability and cell discharge capacity.

Abstract: A tool for preparing the ends of optical fiber waveguides prior to such operations as coupling and splicing. The tool is adapted for single-handed operation and comprises a pair of manually actuated handles, first and second fiber supporting surfaces, and a third fiber supporting surface between the first and second surfaces. The optical fiber waveguide is secured to the first and second surfaces by a pair of clamping members which are responsive to the squeezing of the handles. Once the fiber waveguide is secured to the surfaces, further squeezing of the handles produces separating rotation of a pair of jaw members to put the fiber under tensile stress. A cutting blade suspended above the third surface is released to produce a peripheral microcrack on a portion of the optical fiber waveguide lying on the third fiber supporting surface.

Abstract: Optimized switching and retention characteristics of an MNOS memory device are obtained by using as a gate electrode material either metals or semi-metals having a high work function, in conjunction with a gate dielectric layer having a low density of trapping states throughout its volume. The preferred gate electrode materials are either titanium or p.sup.+ -doped polycrystalline silicon.

Abstract: Electrochemical cells operable in a reserve-activated mode and capable of high discharge rates and capacity comprise an active anode material, a solid non-consumable inert cathode current collector, and an electrolytic solution comprising an electrochemically reducible inorganic oxyhalide or thiohalide solvent and a Lewis acid dissolved therein, the Lewis acid being the sole additive solute in the electrolytic solution.

Abstract: An article of manufacture is provided comprising a substantially transparent high density polycrystalline yttria-base body consisting essentially of yttria and from about 6 to 14 mole percent lanthana.A method for preparing the transparent yttria doped with lanthana is also provided comprising admixing or co-precipitating lanthana or a precursor thereof with yttria or a precursor thereof, washing, drying and screening the mixture, calcining the admixed or co-precipitated powders, pressing the calcined powders into a desired shape and thereafter sintering the shaped powder for from about 1/6 to 6 hours at a temperature above the H-phase transition and for from about 1/2 to 6 hours at a temperature below the H to C phase transition, said sintering being effected at a sufficiently low oxygen atmosphere to prevent oxidative contaminants.

Abstract: A catalytic process for the reduction to elemental sulfur of the sulfur dioxide contained in gas streams using a reducing gas such as hydrogen, or preferably carbon monoxide, in a reactor charged with a material represented by the general formula M.sup.II M.sub.2.sup. III O.sub.4 crystallized in the spinel structure wherein M.sup.II is a divalent metal and M.sup.III is a trivalent metal from the first transition period of the Periodic Table of the Elements, or derivatives of the materials of the above formula resulting from pretreatment with hydrogen or, preferably carbon monoxide, and/or exposure to the sulfur dioxide-containing gas stream.

Abstract: A multiple waveguide cable connector assembly is disclosed for coupling the opposing pluralities of protectively-jacketed optical fiber waveguides contained within a pair of multifiber cables.Each of the two connectors forming the connector assembly contains a plurality of axially extending fiber-guiding channels sized to freely accommodate respective fibers, and a like plurality of transversely displaceable finger-like elements extending inwardly from the outer connector periphery into respective channels. The finger-like elements securely engage the protectively jacketed fibers against the channel walls when transversely displaced.One of the connectors projectingly holds the bared fiber tips from one cable in a predetermined pattern at its mating end. The other connector internally holds the bared fiber tips of the second cable in an abuttment region, and freely accommodates the projecting fiber tips from the first connector upon mating therewith.

Abstract: A sidestepping acoustic surface wave filter device employing a 3 dB multistrip coupler between the input transducer and the offset output transducer. A reflector is located across the track associated with the input transducer in the region adjacent to the output transducer. The 3 dB coupler causes the output transducer and the reflector to receive equal acoustic surface wave energy. The reflector is designed so that the energy reflected by it is equal to the energy returned by the output transducer. Phase shifts produced in the returning acoustic surface waves by the coupler cause the returning acoustic surface waves to be suppressed in the track associated with the input transducer. Thus, triple transit signals are avoided.

Abstract: A luminescent glass comprising a host material consisting essentially of 25 to 36 mole percent Al.sub.2 O.sub.3, the balance P.sub.2 O.sub.5, and which is doped with cerium and terbium. The glass is an efficient emitter of visible radiation, predominantly green, when excited by ultraviolet radiation.

Abstract: A photochemical energy storage system includes at least one electrolytic solution containing a reduction-oxidation couple, one species of which can be stored in a second phase. The device includes a charging system and an energy delivery system. The charging system includes an n-or p-type photosensitive electrode at which, under illumination, an oxidation or reduction reaction occurs. In the charging cycle, one species is oxidized while the other is reduced, and one of these products is stored in a phase other than the phase in which the reaction occurs. The energy delivery system transfers electrons to or from the high energy product on demand for delivery through an electrical load to an electrode at which the original reactants can be reconstituted.

Abstract: Novel glass compositions are provided which are enclosed by the iso-composition lines, 2 and 18 mole percent P.sub.2 O.sub.5, 30 and 70 mole percent Al.sub.2 O.sub.3 and 20 and 60 mole percent B.sub.2 O.sub.3. The compositions can contain the usual oxide modifiers. These composition are characterized by refractive indices between about 1.47 and 1.58, densities between about 2.1 and 2.7 gm/cm.sup.3, thermal expansion coefficients between about 26 .times. 17.sup.-7 /C.degree. and 55 .times. 10.sup.-7 /C.degree., and glass transition points of between about 600 and 820.degree. C.

Abstract: A photoelectrochemical metal plating and purification process includes at least one electrolyte containing a reduction-oxidation couple, one species of which is a metal cation which can be reduced to elemental metal at an electrode. The system includes an N-type photosensitive semiconductor electrode at which, under illumination, an oxidation reaction occurs, with concurrent reduction of the metal cation at the counter electrode. In operation, one ionic species of the electrolyte is oxidized while metal ions are reduced and collected as the elemental metal at the counter electrode. In cases where the elemental metal is liquid at the operation temperature, it is collected as a liquid metal pool under the counter electrode.

Abstract: The mosaic image screen of a shadow mask color tube has a plurality of sets of elemental screen areas, each of which areas includes a phosphor for emitting light of one of three primary colors and a filter which is transmissive of that color but otherwise is essentially a visible light attenuator. The color filter for the first set is formed by applying a thin film of a metallic resinate of a particular color onto the faceplate, directing a laser beam to the elemental screen areas for the other two primary colors to liquify the film and to withdraw the liquefied film from these areas, and heating the entire film to raise the energy threshold at which liquefaction occurs. Second and third metallic resinate films of the other two colors are similarly processed, and then all three films are heated to volatilize their respective organic material to form the color filters.

Abstract: Process for the preparation of reactive tungsten comprising reducing a tungsten compound in a reducing atmosphere at temperatures ranging from about 450.degree. C to 700.degree. C. The reactive tungsten can be readily converted to WC, W.sub.2 C or WN.

Abstract: An article of manufacture is provided comprising a substantially transparent high density polycrystalline yttriabase body consisting essentially of yttria and from about 6 to 14 mole percent lanthana.A method for preparing the transparent yttria doped with lanthana is also provided comprising admixing or co-precipitating lanthana or a precursor thereof with yttria or a precursor thereof, washing, drying and screening the mixture, calcining the admixed or co-precipitated powders, pressing the calcined powders into a desired shape and thereafter sintering the shaped powder for from about 1/6 to 6 hours at a temperature above the H-phase transition and for from about 1/2 to 6 hours at a temperature below the H to C phase transition, said sintering being effected at a sufficiently low oxygen atmosphere to prevent oxidative contaminants.

Abstract: A process is described for forming glass optical fibers by heating a glass composition to vaporize a component of the composition at the surface to reduce the refractive index of the glass surface. Four alternative processes can be used: heat treating a fiber preform followed by drawing the fiber, simultaneous heat treating and fiber pulling from a glass melt, fiber pulling followed by heat treating or heat treating the surface of a melt followed by drawing a fiber or preform so that the surface of the melt comprises the cladding.

Abstract: Novel optical fibers are formed from glass compositions enclosed by the iso-composition lines, 2 and 18 mole percent P.sub.2 O.sub.5, 30 and 70 mole percent Al.sub.2 O.sub.3 and 20 and 60 mole percent B.sub.2 O.sub.3 or glass compositions bounded by lines connecting the compositions 28 m% Al.sub.2 O.sub.3 -- 72 m% P.sub.2 O.sub.5 -- 0 m% B.sub.2 O.sub.3 ; 5 m% Al.sub.2 O.sub.3 -- 45 m% P.sub.2 O.sub.5 -- 50 m% B.sub.2 O.sub.3 ; 10 m% Al.sub.2 O.sub.3 -- 30 m% P.sub.2 O.sub.5 -- 60 m% B.sub.2 O.sub.3 and 42 m% Al.sub.2 O.sub.3 -- 58 m% P.sub.2 O.sub.5 -- 0 m% B.sub.2 O.sub.3. The glass compositions forming the optical fibers can contain the usual oxide modifiers.

Abstract: Variable phase shifting apparatus for selectively altering the phase of an AC signal. The signal is conducted through a series of stages. Each stage includes an operational amplifier having an input resistor and a feedback resistor. A capacitor is associated with either the input resistor or with the feed-back resistor. The capacitor may be connected into or disconnected from the stage by a digital switch. When the capacitor is connected, the stage produces a particular amount of shift in the phase of the AC signal, and when the capacitor is disconnected, the AC signal is conducted through the stage with no change in phase. By employing stages capable of producing different amounts of phase shift any of a set of amounts of phase shifts may be obtained.

Abstract: An analog to digital converter includes a first parallel comparator network receiving the analog signal and continuously producing the most significant bits of the digital signal, a subtractor for removing from the analog signal the amplitude portion corresponding to the most significant bits, a second parallel comparator receiving the modified analog signal and continuously producing the least significant bits of the digital signal, and a sampling buffer responsive to a sampling pulse to provide the digital signal only at the occurrence of the sampling pulse.

Abstract: An article of manufacture is provided comprising a substantially transparent high density polycrystalline yttria-base body consisting essentially of yttria and from about 0.01 to 5 wt. % alumina.A method for preparing the transparent yttria doped with alumina is also provided comprising admixing alumina or a precursor thereof with yttria or a precursor thereof, drying the admixed powders, calcining the admixed powders and pressing the calcined powders into a desired shape and thereafter sintering the shaped powder for about 1/4 to 6 hours at a temperature above the eutectic temperature at a sufficiently low oxygen atmosphere to prevent oxidative contaminants.