Abstract: This invention is directed to the production of glass-ceramic materials designed for application as glazes to low expansion ceramic bodies. The inventive glass-ceramics exhibit average coefficients of thermal expansion (25.degree.-100.degree. C.) of less than -15.times.10.sup.-7 /.degree.C., demonstrate excellent resistance to attack by acids and bases, contain beta-quartz solid solution as the predominant crystal phase, and consist essentially, in weight percent, of______________________________________ SiO.sub.2 50-67 Al.sub.2 O.sub.3 22-32 Li.sub.2 O 4.5-7 TiO.sub.2 and/or ZrO.sub.2 4.

Abstract: The invention provides a chemical-responsive field-effect transducer operating in depletion-mode, or enhancement/depletion-mode, comprising: a semiconductor material having a pair of adjacent diffusion regions (1,2) of a certain doping polarity located at the surface and separated by a channel (3) of the same doping polarity, said channel being created by diffusion, ion-implantation, epitaxial growth, or creation of a surface inversion layer by controlled processing techniques or other means. The diffusion regions and channel region are supported by an insulating substrate (4) or semiconductor substrate of opposite polarity. Electrical insulator (6) and/or ion-barrier material (7) overlies the aforementioned channel region. An electroactive material (10) overlies said insulator and/or ion-barrier, such that the electroactive material will interact with substances to which it is exposed and control the charge-carrier density in the aforementioned channel.

Abstract: An integral optical imaging device is disclosed in which two or more porous glass bodies, embodying arrays of cylindrical gradient index lens systems, are rigidly maintained in a stacked relationship such that the lens systems are in register. This enhances the accumulative lens power and effective thickness of the device.

Abstract: Glass or ceramic products including glass optical waveguides are produced by a vapor phase oxidation process wherein .beta.-diketonate complexes of selected metals having significant vapor pressures at some temperature below their decomposition temperatures are vaporized, transported to an oxidation site in the vapor phase, and reacted in the vapor phase to form particulate metal oxide soot. After capture, this soot can be consolidated by sintering to form e.g. clear glass of a purity suitable for drawing into glass optical waveguide fiber.

Abstract: A process for stabilizing wine is characterized by:(a) copolymerizing formaldehyde and tannic acid attached to an insoluble carrier to form an immobilized tannic acid composite(b) contacting a wine having components which cause haze formation upon heating with the immobilized tannic acid for a period sufficient to remove the desired amount of haze components; and(c) separating the treated wine from the immobilized tannic acid.

Abstract: A plurality of photo sensitive devices arranged in vertical orientation monitors the sag of a loop of optical fiber extending between a feed capstan and a take-up spool. Each detector is connected to a respective switching circuit which, when activated by the presence of the fiber adjacent to its associated detector, generates a unique voltage. The switching circuits are connected to a motor control circuit by a sample and hold circuit which supplies to the motor control circuit a voltage proportional to the voltage generated by the most recently activated switching circuit. The speed of the motor driving the take-up spool is thus adjusted to cause the fiber catenary to return to a predetermined position.

Abstract: Novel .beta.-diketonate complexes incorporating a tetrahydrofuran adduct, having the formula M(hfa).sub.2.nTHF wherein M is Mg or Zn and n is in the range of about 1-4 and, which offer high volatility and good chemical stability at vaporization temperatures, are described.

Abstract: Cheese flavoring agents and cheese flavor enhancers are provided in the form of enzyme-modified, lactose-hydrolyzed whey or whey fractions. The products have a flavor profile characteristic of aged cheese and a flavor intensity sufficient to serve as the sole source of cheese flavor or as a cheese flavor enhancer in a variety of food products.

Abstract: Colored photochromic ophthalmic lenses are produced by combining a photochromic cap element having an integrally colored back surface with an ophthalmic crown base element having a prescription-ground back surface, the cap back and base element front surfaces having been finished to a matching standard base curvature, thus providing a cemented assembly exhibiting a selected combination of prescribed vision-correcting and light filtering properties.

Abstract: A process for manufacturing a preform from which is drawn an optical fiber, the core of which comprises layers of different glass composition. Layers of glass soot are deposited on the flat, longitudinally extending sides of a thin, elongated mandrel. Adjacent soot coatings have different refractive indices. A preliminary coating of cladding glass soot is deposited on the laminated soot structure. The resultant composite body is consolidated and stretched to form a rod or core structure upon which the final coating of cladding soot is deposited. The resultant composite body is consolidated and drawn into an optical fiber. In a modification of the this method, the mandrel is removed after the planar soot coatings and preliminary coating of cladding soot are deposited thereon. The resultant soot body is consolidated and processed as described previously.

Abstract: This stove is divided by a partition into a lower, combustion chamber, and an upper chamber which communicates directly with an exhaust opening in the stove. A catalytic converter is removably mounted in an opening in the partition. A by-pass damper, which is connected to the stove door, is normally held closed over a by-pass opening in the wall of the lower chamber, when the door to the stove is closed, whereby all combustion gases from the lower chamber must pass upwardly through the converter and the secondary chamber to the exhaust opening. When the stove door is opened, the by-pass damper tilts by gravity into an open position so that combustion gases from the lower chamber pass directly to the exhaust opening rather through the upper chamber, and rather than being accidentally discharged out of the open door. The converter causes all by-products of combustion to be subjected to a secondary combustion in the converter before passing to the exhaust opening.

Abstract: A process for manufacturing a preform from which is drawn an optical fiber, the core of which comprises layers of different glass composition. Layers of glass, adjacent ones of which have different composition, are deposited on a substrate. A process is preferred whereby layers of glass soot are deposited. The soot is consolidated and the resultant laminated glass structure is severed to form an elongated azimuthally asymmetric laminated core structure. A layer of cladding glass is added to the core structure, and the resultant preform is drawn into an optical fiber.

Abstract: In a reference electrode comprising an enclosure containing a half-cell electrode, a half-cell electrolyte, and a reference junction positioned in an outlet for the electrolyte, the half-cell electrode being connectable to an external measuring means, the improvement which comprises a removable and replaceable reference junction comprising a removable encasing body encasing a porous member, said porous member being in length only up to about one half the length of the encasing body, fixedly inserted through said outlet.

Abstract: A reference electrode comprising an enclosure containing a half-cell electrode, a half-cell electrolyte, and a reference junction positioned in an outlet for the electrolyte, the half-cell electrode being connectable to an external measuring means, in which said reference junction comprises a removable and replaceable reference junction fixedly inserted through said outlet.

Abstract: An apparatus for mixing or homogenizing viscous material is disclosed. Stirrers, comprising multiple vane mixing blades are mounted on a pair of parallel shafts in corresponding spaced apart parallel tiers. Each vane has a working surface inclined relative to the shaft and offset relative to the vanes of an immediately adjacent blade. One shaft is advanced relative to the other so that the vanes intermesh. The inclination of the vanes in one blade is mirrored in sense to the other blade on the adjacent shaft, and the shafts are rotated in opposite sense so that the stirrers in each tier pump the material in the same relative direction when the shafts are so rotated.

Abstract: An extender for fermented sausage products based on hydrolyzed whey or hydrolyzed whey fractions is provided. The extender is equivalent to, but less expensive than, extenders used in the prior art, such as nonfat dry milk, and exhibits functional properties in the finished product, including the properties of reducing the product's pH and water activity.

Abstract: An extender for comminuted meat products based on hydrolyzed whey or hydrolyzed whey fractions is provided. The extender is equivalent to, but less expensive than, extenders used in the prior art, such as nonfat dry milk, and exhibits functional properties in the finished product including binding, emulsifying and flavor enhancement.

Abstract: An electrochromic device comprising a solid electrolyte, wherein the electrolyte consists of porous glass impregnated with a solid ion-conductive compound such as an alkali metal salt, is described.