Abstract: The present invention discloses a specifically designed pretreatment cell. This pretreatment cell consists of a tank having an entry end and an exit end. A metal web is introduced into the tank proximate the entry end and removed from the tank proximate the exit end. In between, three submergence rollers force a portion of the web into a pretreatment solution housed by the tank. These submergence rollers are placed such that the center roller penetrates deeper into the tank than the other two. Weirs are incorporated to raise or lower the level of the fluid and thereby modifying the length of the portion of the strip that is submerged in the fluid. Within the tank, a counterflow nozzle directs the pretreatment solution along the metal web in a direction opposite to the direction in which the web is running. An supply nozzle is also provided to deliver fluid into the tank. Attached to the tank there are also one or more removal areas.

Abstract: Method and apparatus for meniscus coating one or two sides of steel strip with a metal or metal alloy. The apparatus includes a horizontally disposed coating tray for containing molten coating metal, gas heaters for maintaining the temperature of the coating metal above the melting point of the coating metal, stabilizing rollers for moving steel strip transversely past a departure lip positioned on one side of the coating tray and adding solid or molten metal to the coating tray for maintaining the level of the coating metal in the coating tray relative to the upper elevation of the departure lip so that an uninterrupted flow of the coating metal can be delivered over the departure lip to a surface of the strip. The coating tray may be rotatably mounted for adjusting the level of molten metal in the coating tray. The coating tray also may include a sled for lateral displacement for positioning the departure lip a predetermined distance away from the strip.

Abstract: An electronic printing method which comprises subjecting a radiation sensitive silver halide emulsion layer of a recording element to actinic radiation of at least 10.sup.-4 ergs/cm.sup.2 for up to 100 microseconds duration in a pixel-by-pixel mode is disclosed. The radiation sensitive silver halide emulsion layer contains a silver halide grain population comprising at least 50 mole percent chloride, based on silver, forming the grain population projected area. At least 50 percent of the grain population projected area is accounted for by tabular grains that are bounded by {100} major faces having adjacent edge ratios of less than 10, each having an aspect ratio of at least 2.

Abstract: A method of building multistory structures having poured concrete slabs. Vertical structural columns and other nonstructural members penetrating the finished floor slabs are terminated at each floor below the level of the finished slab. The slab is then poured, covering the terminated structural and nonstructural members with a thin layer of concrete, and leaving an upper slab surface unencumbered by upward projections. The entire slab is then screeded by a screeding machine in one pass. In an alternative embodiment, the screeding machine makes more than one pass, but the upper surface is still unobstructed. The thin layer of concrete is readily discerned by coloration differences, and is chipped away and removed. All penetrating members are then extended. The process is repeated until all slabs are completed. The novel method is usable with both steel and poured concrete columns.

Abstract: Apparatus for inserting an elongated flexible prefabricated vertical (PV) drain downwardly into the earth. The apparatus includes a vertical mast having a lower standard mast base and a lightweight extra long mast extension. A vehicle supports the mast from its mast base in order to raise and lower the mast to and from vertical and to otherwise manipulate and transport the mast in a conventional manner. A longitudinal chamber extends for the entire length of the mast and carries therein an earth penetrating tube for vertical movement. This earth penetrating tube also has a passage therethrough for receiving the elongated flexible PV drain for movement with this insertion tube down into the earth when driven therein. The mast extension includes a series of axially aligned extension tubes constructed of light weight material and removably connected together end to end, and a combination spar and guy mechanism is utilized for supporting this long mast extension from the relatively short mast base.

Abstract: The invention provides acrylamide polymers that, when mixed with water solvent, provide thermoreversible solutions that form low viscosity melts at temperatures separated by a third region of maximum viscosity.

Abstract: Method and apparatus for meniscus coating one or two sides of steel strip with a metal or metal alloy. The apparatus includes a horizontally disposed coating tray for containing molten coating metal, means for maintaining the temperature of the coating metal above the melting point of the coating metal, means for moving steel strip transversely past a departure lip positioned on one side of the coating tray and means for maintaining the level of the coating metal in the coating tray relative to the upper elevation of the departure lip so that an uninterrupted flow of the coating metal can be delivered over the departure lip to a surface of the strip. The coating tray may be rotatably mounted for adjusting the level of molten metal in the coating tray. The coating tray also may include means for lateral displacement for positioning the departure lip a predetermined distance away from the strip.

Abstract: A homogenous, essentially nonaqueous adjuvant composition comprising a spray oil and a surfactant blend selected from the group consisting of sorbitan fatty acid ester, polyethoxylated derivative of a sorbitan fatty acid ester, fatty alkanolamides, peg esters, silicone surfactants, ethoxylated fatty acids, alkyl ethoxylates, alkylphenol ethoxylates, polypropylene glycols, and amine ethoxylates and a buffering agent selected from the group consisting of alkylaryl polyethoxy phosphate ester, C.sub.1 -C.sub.6 carboxylic acids, C.sub.1 -C.sub.6 dicarboxylic acids, phosphoric acid, citric acid, glutaric acid, gluconic acid, lactic acid, glycolic acid, acrylic acid, carboxylated alcohol ethoxylateR--O (CH.sub.2 CH.sub.2 O).times.HR=C-C.sub.25 carboxylic acid, andX=1-20 moles ethylene oxide in an amount sufficient to reduce the pH to below 7.

Abstract: A process for preparing a chemically resistant coating in which a substrate is sequentially contacted with a ground coat, fired, contacted with an intermediate coat, fired, and contacted with a cover coat and fired. The intermediate coat is comprised of a minor amount of inorganic fiber which has a softening point in excess of 950 degrees Centigrade, an average length of from about 100 to about 750 microns, an average diameter of from about 515 microns, and an average aspect ratio of from about 10:1 to about 75:1.

Abstract: A process for preparing a thin tabular grain silver halide emulsion comprised of silver halide grains which have a halide content of at least 50 mole percent bromide, wherein tabular grains of less than 0.15 micrometers in thickness and having an aspect ratio of greater than 8 account for greater than 50 percent of the total grain projected area, comprises the steps of nucleating the silver halide grains with a gelatino-peptizer or with the use of certain synthetic polymers that serve as effective nucleation peptizers and then growing the silver halide grains with the use of either a gelatino-peptizer or certain synthetic polymers that serve as effective growth peptizers.

Abstract: Use of a single pass print data stream conversion process when sufficient memory is available to store all the page data to be printed and reversion to a double pass conversion when insufficient memory is available. Scanning of the input data stream, storing the page data, and downloading the resource data to the printer continues so long as sufficient memory to store the page data is available. If the available memory is filled before the entire page is scanned, the stored page data is discarded. The scanning continues to download the resource data but the page data is no longer stored. When the page has been completely scanned, the scanning is restarted at the beginning of the page, downloading the page data to the printer and discarding the resource data during the second scan.

Abstract: Chimeric proteins and DNA sequence encoding chimeric proteins are provided, where the chimeric proteins are characterized by an extracellular domain capable of binding to a ligand in a non-MHC restricted manner, a transmembrane domain and a cytoplasmic domain capable of activating a signaling pathway. The extracellular domain and cytoplasmic domain are not naturally found together. Binding of ligand to the extracellular domain results in transduction of a signal and activation of a signaling pathway in the cell, whereby the cell may be induced to carry out various functions relating to the signalling pathway. A wide variety of extracellular domains may be employed as receptors, where such domains may be naturally occurring or synthetic. The chimeric DNA sequences may be used to modify lymphocytes as well as hematopoietic stem cells as precursors to a number of important cell types.

Abstract: Hood assembly for pneumatic process metallurgical vessel, such as BOF, which includes removeable spray cooled sub-assemblies at predetermined locations in the hood assembly.

Abstract: A preformed assembly is provided for the replacement of a thermally stressed portion of a unitary water cooled closure element, e.g. made of plain carbon steel, of a furnace system which includes a steel frame to which is pre-welded a copper covering plate, the steel frame being welded into a closely fitting cut-out in the closure element, e.g. a furnace roof or furnace shell.

Abstract: An optical scanning rangefinder has been developed that creates a depth map of its surroundings by scanning a beam of modulated, collimated light and observing reflections from proximate surfaces. The scanning system uses dual rotating prisms to deflect the transmitted beam and collect a portion of the reflected light, which is focused on a photodetector and converted to an electrical signal. This signal is amplified, AC coupled, and inverted. The inverted signal drives the modulator for the light source. When sufficient light is received by the detector, this sytem forms an oscillator, the frequency of which depends on the distance to the illuminated surface. This frequency can easily be measured to a high degree of accuracy, and the distance to the surface derived from it. The scanner achieves a field of view of 360 degrees horizontally by 52 degrees vertically.

Abstract: Compacted granular or stone columns are constructed in soil to increase the load-bearing capacities of the native soil. An elongated hollow tubular member is penetrated down into the soil to a predetermined depth and then the granular material or stone for constructing the column is fed down through this member and out the lower end thereof where it is then driven outwardly in a radial direction by an impeller which is exposed, at least in part, at the lower end of the tubular member, as the hollow tubular member is either penetrating or being withdrawn from the soil at a predetermined rate to thereby forceably compact this granular or stone material in a substantially radial direction to construct a stone column. Sufficient forces may be applied by the impeller to the granular or stone material to fracture the surrounding soil.

Abstract: A cask for storing and transporting highly radioactive materials includes an inner shell and a number of layers of depleted uranium wire wound on the inner shell to create a radioactive shield against emanation of radioactivity from the material stored within the inner shell.

Abstract: This invention provides a photographic element containing a polymer layer which reflects a development inhibitor or its precursor released from a DIR compound thereby retarding the diffusion of the development inhibitor to another layer. The polymers used in the barrier layer contain from about 1.times.10.sup.-5 to about 4.times.10.sup.-3 ion forming functional groups. The preferred polymers comprise repeating units of the formula --(A).sub.m -(B).sub.n -- with A derived from a hydrophobic monomer and B derived from an ionic hydrophilic monomer with the more preferred monomers being acrylates, methacrylates, acrylamides and methacrylamides. The invention also provides a method of processing a photographic element containing such a barrier layer.

Abstract: A water soluble, highly active formulation of O,O-dimethyl S-(N-methylcarbamyl) phosphorodithioate in a solvent system comprising a lower alkyl alchol and a lower alkyl acetate ester is disclosed. The formulations of the present invention are completely water soluble, even in the absence of emulsifiers or other dispersing agents. They contain greater amounts of the active ingredient and display greater tolerance to low temperatures. The mixed solvent system used in these formulations is desirable since it is less toxic than the known solvents.