Abstract: An elongated burner for producing a stream of metal oxide soot comprises a burner face having two parallel arrays of orifices for issuing a gas-oxygen mixture to produce two intersecting linear flames. Disposed between the gas-oxygen orifices is an array of orifices for issuing metal halide vapor into the flame. Two parallel arrays of orifices, one on each side of the vapor orifices and closely spaced therewith provide high velocity jets of inner shield gas on opposite sides of the vapor streams. Disposed between the inner shield gas orifices and the gas-oxygen orifices are two elongated slots which are much greater in width than the diameters of the aforementioned orifices. These slots provide a large volume, low pressure dry, nonreactive gas which prevents the flame from "backsplashing" onto the region of the vapor orifices and further prevents the deposition of soot on the burner face.

Abstract: Device for simultaneous recognition of group D streptococci and the differentiation of members of that group into enterococci and nonenterococci bacteria. Device comprises an elongated substantially cylindrical transparent tube having upper and lower chambers joined by a conduit having a smallest diameter smaller than either chamber. The upper chamber contains a semi-solid bile-esculin medium capable of indicating the presence of group D streptococci. The lower chamber contains a semi-solid enterococci distinguishing medium having a NaCl content of at least about 6.5%. Media in the two chambers are separated by a gas (e.g., air) within the conduit.

Abstract: An optical fiber junction device for coupling a pair of optical fibers with a third optical fiber. A portion of the cladding is etched from the end portions of the pair of fibers, and those end portions are then secured together in side-by-side relationship so that their endfaces are coplanar. The third fiber is so disposed that the end portion thereof is substantially parallel to the end portions of the pair of fibers, and its endface is adjacent to the endfaces of the pair of fibers. Means is provided for causing lateral movement between the endfaces of the pair of fibers and that of the third fiber to vary the amount of light coupled between the pair of fibers and the third fiber.

Abstract: There has been provided an armored beaded piping system, having a boot of corrosive resistant material adapted to shield the forward end of the armor from corrosives and to provide a protective end covering, which is grasped by a pipe coupler such that separation of the pipe system from the coupler is prevented upon inner pipe failure.

Abstract: This invention is concerned with the preparation of glass articles wherein a portion thereof is opaque and another portion thereof is transparent and, optionally, integrally colored. The opaque portion is produced through the thermal reduction and precipitation of a controlled number of submicroscopic particles of at least one metal selected from the group of copper, gold, palladium, platinum, and silver with the subsequent nucleation and growth of NaF crystals on said metal particles to a size sufficient to scatter visible light. The transparent portion is developed through the photoreduction of at least one photosensitive metal selected from the group of copper, gold, and silver to produce additional submicroscopic particles of said metals upon which NaF crystals are nucleated and grown, but which remain in a size too small to scatter visible light. The presence of copper or gold alone gives rise to a single color, whereas the inclusion of silver permits a full spectrum of colors to be produced.

Abstract: Smooth surfaces of impervious zirconia-base ceramics are chemically treated to produce micropitting and/or microcratering therein which enables durable adherence of metal coatings (e.g. of noble metal) applied thereon. Treatment involves contact of the smooth surfaces with liquid leachant selected from concentrated sulfuric acid, ammonium bisulfate, alkali metal bisulfate and mixtures thereof at a temperature of at least 250.degree. C. Leached surface is contacted with hydrochloric acid to remove reaction residue comprising sulfate of metal elements including zirconium in the ceramic.

Abstract: A plurality of cellular shapes for honeycomb structures having cells of uniform size and shape are disclosed having movable expansion joint means built into each individual cell structure, which joints can tolerate large strains without breaking.

Abstract: The present invention is concerned with the production of sodium and/or potassium hydrosilicate glass bodies. The basis of the invention resides in the hydration of anhydrous sodium and/or potassium silicate glass bodies in aqueous alcohol solutions to impart enhanced mechanical strength and thermoplastic properties thereto. The hydrating process, which permits close control to be maintained over the water content absorbed in the glass, can be carried out in liquid solutions of water and relatively short chain, i.e. up to about five carbon atoms, aliphatic alcohols or in gaseous atmospheres of such solutions. An ion exchange reaction of Li.sup.+ ions or protons with Na.sup.+ and/or K.sup.+ ions can be promoted at temperatures above the transformation range of the hydrated glass, and an exchange of K.sup.+ ions for Na.sup.+ and/or Li.sup.+ ions at temperatures below the transformation range.

Abstract: This invention relates to a process for injection molding hydrosilicate glasses and apparati useful therefor. This invention is also concerned with apparati for mixing hydrosilicate glasses while in the fluid state, i.e., when the hydrosilicate glasses have a viscosity between about 10.sup.2 -10.sup.9 poises. Finally, this invention describes materials demonstrating ready release of hydrosilicate glasses after contact in fluid form.

Abstract: A recorder pen is mounted on the sample scanning stage of an electrophoretic sample analyzer. Movement of the stage scans the sample optically while, at the same time, the recorder pen produces an analog record of the optical analysis. A sample holder is mounted in the stage for detented movement in the direction orthogonal to the scanning motion of the sample stage. The sample holder can be moved to one of several detented positions so that different tracks of the samples are scanned.

Abstract: Photosensitive laminated glass useful for providing strong, lightweight glass articles incorporating integral surface decorations resistant to mechanical and chemical deterioration in use are described.

Abstract: Immobilization of active anti-cortisol antibodies onto negatively charged solid phase surfaces results in a shift of the antibody pH optimum to an acidic range thereby permitting effective yet minimal use of deblocking agents and an extraction-free immunoassay for cortisol.

Abstract: Hermetically sealed lead-in structures of the compression seal type, useful for electronic devices and particularly for transistor and integrated circuit headers, are described. The seal structures comprise a glass-metal compression seal between steel casing and low-expansion cobalt-nickel-iron alloy leads, utilizing specific glassy sealing materials which impart thermal shock resistance of at least 425.degree. C. to the compression seal.

Abstract: There has been provided a coupler for joining lengths of concentric pipe. A sleeve member receives the pipes in spaced relation therein, with an end of the concentric inner pipe forward of the end of the outer pipe. A forward annular flange portion of said sleeve member is concentric with the pipes and extends radially inward as well as outward of the sleeve member. A rearward face of said flange portion faces the forward end of the outer pipe and is spaced away therefrom by a selected length of said tail portion forming an annular groove bounded by the outer pipe end and inner wall of said tail portion of the selected length and the rear face of the flanged portion. A compressible O-ring type elastomer seal is disposed in the annular groove and extends radially inward of said outer pipe. A gasket is concentrically sleeved between said O-ring seal and outer wall of the inner pipe. In compression, the O-ring seal and gasket form a circumferential seal about the inner pipe.

Abstract: Honeycomb structures of brittle material having a plurality of cells extending longitudinally therethrough. When viewed in a plane perpendicular to a longitudinal axis through the structure, the plurality of cells extend thereacross and, with the exception of peripheral cells, are all of uniform size and shape. The shape is a rectangle whose length is twice its width. The cells are contiguously arranged in a repeating pattern that provides a "flexible" rectangle cellular structure wherein wall portions and joints formed by intersecting wall portions are movable to compensate for expansion/contraction stresses or forces thermally induced within the cellular structure, thereby tolerating significant strains without breaking the structure.

Abstract: Microbial culture device containing a growth medium having incorporated therein a lipophilic fluorescent material and means associated therewith for localizing and identifying the growth of colonies of an unknown microbe, and a known gram positive microbe, and/or a known gram negative microbe. The device can be used to determine whether an unknown microbe sample is gram positive or gram negative by culturing the unknown on the medium and then comparing the fluorescence of the unknown microbes with fluorescence of similarly cultured gram positive and/or gram negative microbes.

Abstract: A method for densifying a fumed metal oxide of Groups III and IV prepared by either a vapor phase oxidation or combustion process is disclosed wherein the metal oxide is mixed with a polar liquid in a high shear mixer, the metal oxide being present in an amount of about 35-50%, to convert it into a granulated material which, when dried, will substantially all pass through a 10 mesh screen. The granulated material may then be calcined preparatory to wet milling to prepare a casting slip, or it may be vitrified directly for molding or drawing in known manner.

Abstract: Ceramics comprising a crystal phase composed of a lithium-containing beta-quartz solid solution are treated with a strong acid to selectively remove lithium therefrom by a hydrogen-for-lithium ion exchange process. Heating of the resulting hydrogen-containing crystal phase drives off H.sub.2 O and provides a ceramic product containing a previously unreported hexagonal aluminosilicate crystal phase, denominated aluminous quartz. Stuffed derivatives of aluminous quartz may also be provided.