Abstract: Fluorescent test paper for detecting mercury ions is firstly prepared, the fluorescent test paper including a fluorescence development area and a standard fluorescent colorimetric card. With reference to an excited color corresponding to a reference channel in the standard colorimetric card, the color corresponding to a carbon quantum dots distribution area on the fluorescent test paper is observed to check the fluorescence detection environment during detection with the fluorescent test paper. In colorimetric detection of the content of mercury ions, the concentration of Hg2+ is detected based on an excited color, in the standard colorimetric card, that corresponds to a standard mercury ion sample and is closest to a color signal in a copper nanoclusters distribution area on the fluorescent test paper.

Abstract: Provided is a concrete hardener composition. The concrete hardener composition includes a sodium silicate compound, an acid compound and a balance amount of solvent. The sodium silicate compound includes sodium silicate or a mixture of sodium silicate and sodium methylsilicate. The acid compound includes acetic acid, glycolic acid, ethylenediaminetetraacetic acid, tartaric acid, nitric acid, boric acid or a combination thereof. The solvent includes water or a mixed solution of water and polyol. Based on the total weight of the concrete hardener composition, the content of silicon is between 5 wt % and 15 wt %, and the content of the acid compound is between 2 wt % and 30 wt %.

Abstract: An apparatus for curing concrete includes a multiple layer polyolefin film and an absorbent layer. The polyolefin film layer can include pH modifying components and antiskid components. The absorbent layer can also include pH modifying components. The absorbent layer can include nonwoven fabric. The apparatus can be applied to curing concrete after hydration water is applied to the curing concrete. The apparatus can also be used to enclose poured concrete members during transport of the members so as to continue the curing process during transport. The film can also be used as a barrier layer between the ground and poured concrete.

Abstract: A method for fabricating a concrete slab upon a surface, the concrete slab having a final thickness and having, upon drying, a maximum dry density, the method including steps of providing a body of no-slump concrete, the no-slump concrete including a combination of aggregate and paste; dispensing the no-slump concrete upon the surface in an even depth layer which has an upper surface and includes an air volume, a portion of the paste residing at an upper surface of the even depth layer; removing a portion of the air volume from the no-slump concrete layer by compaction; trowel mulching the paste which resides at the upper surface; and trowel transporting the mulched paste horizontally over the upper surface to form a smooth concrete paste upper slab surface.

Abstract: The invention concerns a method of moulding a part (1?) made from composite material. This method comprises a step of injecting a liquid (7) under pressure into a closed mould (2) containing a fibrous pre-form (1) previously impregnated with resin. Said liquid (7) comes into contact with the resin but it is substantially inert and immiscible with respect thereto. The invention also concerns an apparatus for carrying out this method.

Abstract: Disclosed is a multilayer structure and a process therefore in which the multilayer structure comprises a core layer and a sealant layer; the structure is a coextruded, low temperature sealing, biaxially oriented film or sheet; the sealant layer has a seal initiation temperature of from 70 to 100° C.; the combined thickness of the core and the sealant layer is 20 to 60 ?m; and the sealant layer has a thickness of from 10 to 20 percent based on the combined thickness of the core and sealant layer.

Abstract: A method for providing an insulated electric high voltage DC cable or a high voltage DC termination or joint. A polymer based insulation system including a compounded polymer composition is provided. The polymer based insulation system is subsequently exposed to a heat treatment procedure while the outer surface of the polymer based insulation system is covered by a cover impermeable to a substance present in the polymer based insulation system in a non-homogenous distribution, thereby equalizing the concentration of the substance in the polymer based insulation system.

Abstract: A method of reducing fuel vapor permeation through a multi-layer tank includes providing a multi-layer overlay onto at least a portion of a structural layer of the multi-layer tank. The multi-layer overlay preferably comprises at least one structural layer composed of a polymeric material that is compatible with one or more of the polymeric structural layer(s) of the multi-layer tank. The multi-layer overlay further comprises at least one barrier layer composed of a vapor barrier material resistant to hydrocarbon permeation therethrough. The multi-layer overlay may be secured to the multi-layer tank by, for example, applying a suitable amount of heat and pressure thereto or by molding the multi-layer overlay to the tank body during a tank forming process.

Abstract: The present invention relates to a liquid crystal display (LCD) device, and more particularly, to a method of fabricating a color filter for an LCD device. A method of fabricating a color filter uses a mold (PDMS mold) having a plurality of grooves. Particularly, the mold (PDMS mold) is attached to a substrate such that the plurality of grooves face into the substrate. When a color resin is dropped into a side opening of each groove, the color resin is injected into each groove of the mold (PDMS mold) by a capillary force. After the mold (PDMS mold) having the injected color resin is cured, the mold (PDMS mold) is detached from the substrate and a color filter pattern is formed at a desired position.

Abstract: A method of controlling evaporation of a fluid, such as water, in an article includes the step of encapsulating the article with a film such that the fluid is prevented from evaporating from the article. The method further includes the step of heating the article encapsulated with the film to a first desired temperature for a first period of time while preventing the fluid from evaporating from the article. The method also includes the step of removing the film from the article after heating the article to the first desired temperature for the first period of time and, after the step of removing the film the article, the method includes the step of further heating the article to a second desired temperature for a second period of time while the fluid freely evaporates from the article.

Abstract: This method to allow the use of low VOC (volatile organic compounds) solvents in blanket cleaning operations and the resultant product that is produced by this method involves the retrofitting of currently existing seals on printing press so that operators can use low VOC solvents in place of high VOC solvents. High VOC solvents are harmful to the atmosphere and humans alike. As VOC are lighter than the surrounding air, humans are subjected to inhalation of these harmful vapors which cause respiratory and other health ailments. The VOC continue to rise, mixing with nitrogen oxides, until they reach the troposphere forming thick layers of ozone or smog. The current movement of municipalities to limit the use of high VOC solvents have lead printers and others to use low VOC solvents which are inherently less evaporative than high VOC solvents. This lack of evaporation causes problems with having to handle greater volumes of waste to handle and dispose properly.

Abstract: A barrier gasket (20, 120, 220, 320, 420, 520) uses two different materials to seal between components (22, 24). The first relatively inexpensive material (30, 130, 230, 330, 430, 530) is used for the base material and a second material (40, 140, 240, 340, 440, 540) is used to form the seal that contacts the fluid. The second material (40, 140, 240, 340, 440, 540) is compatible with and chemically resistant to the fluid with which it will come into contact. The second material (40, 140, 240, 340, 440, 540) forms a protective barrier that prevents the fluid from coming in contact with the first material (30, 130, 230, 330, 430, 530).

Abstract: In coloration of a shaped article composed of a curable resin, the addition operation can be reliably conducted and a reliable coloration effect can be obtained in both the single-color addition and in the multicolor addition. A liquid-phase, non-colored photo-curable resin is cured by irradiation with laser light and a lowermost layer 5n is formed. A liquid-phase, photo-curable resin is applied on the upper surface thereof and a colored layer 5n-1 comprising a cured non-colored region and a liquid-phase pool region is formed. A color ink is drop-wise added to the liquid-phase pool region. The pool region is irradiated with laser light and cured to the same hardness as that of the non-colored region. A block-like coating film having the prescribed thickness if formed from the surface coating film produced by the color ink covering the pool region. As a result, the formation of the next layer (colored layer 5n-2) on the upper surface of colored layer 5n-1 can be conducted without obstacles.

Abstract: A washing tub is formed with a reinforcing body made from a non-metallic material, such as plastic or fiberglass, and a thin interior liner portion constituted by a metallic material, preferably stainless steel. The metallic material is preferably sprayed onto a tub shaping member and then the reinforcing body is attached to the metallic material. In accordance with one embodiment of the invention, the reinforcing body is formed from plastic, such as polypropylene, which is injected about a mold core following the spray coating of the metallic material on the core. In another embodiment, the reinforcing material is constituted by fiberglass which is layered about a shaping member having the metallic liner portion deposited thereon. In any case, an aesthetically appealing and extremely cost effective, high quality washing tub is produced.

Abstract: Systems, methods and apparatuses for manufacturing dosage forms, and to dosage forms made using such systems, methods and apparatuses are provided. Novel compression, thermal cycle molding, and thermal setting molding modules are disclosed. One or more of such modules may be linked, preferably via novel transfer device, into an overall system for making dosage forms.

Abstract: The present invention provides a sheet molding compound consisting in a sandwich structure comprising a central layer of reinforced uncured heat hardenable sheet molding compound; and two outer layers of a release film having low permeability to hydrocarbons comprising at least one layer (i) of a polyamide/polyolefin alloy having a polyamide matrix and at least one layer (ii) of a polyolefin.

Abstract: A hydration system having one or more units (10, 10', 10") for providing a continuous flow of water to newly placed concrete has a plurality of spaced elongated soaker tubes (12) extending parallel to a longitudinal axis (14) of the unit. Respective manifold tubes (16-19) are attached to each end of soaker tubes (12) and a supply coupler (32) is in turn attached to the manifold tubes at one end of the unit and an additional coupler (34) is attached to the manifold tubes at the opposite end of the unit. An upper impervious layer (28) is disposed over the tubes (12, 16-19) and a lower pervious layer (28) is disposed under the tubes (12, 16-19). Layers (26, 28) are attached to each other along the outer periphery of the unit and on opposite sides of the tubes by rivets (30) or stitching (42).

Abstract: Cast iron pipe and other elongated hollow articles are lined with a cementitious mortar for certain applications, such as the transmission of potable water or sewage. To improve the resistance to attack from acids and to provide a crack and void spot free cement lining, a calcium alumina cement is used to line the article. A plasticizer such as fireclay is added to the calcium alumina cement prior to its application. The cement lined article is then coated with an asphaltic based coating and then cured in a high humidity environment.

Abstract: A process for producing and curing hydraulic material to reduce its hydrophilic characteristics and increase its strength. By preventing water loss and by adding water, efflorescence is controlled and the number of and size of voids created by water evaporation and hydration are reduced. Controlling the cure environment, humidity, temperature and pressure and using fluid barriers and water, control the physical and chemical composition formed during curing. The controls can be used before and/or after the initial set or shape formation of the hydraulic material.

Abstract: A gel cassette useful in electrophoretic separation of molecular fragments is disclosed, in which a gelatinous substrate is uniquely configured to concentrate similar separated fragments. Containment means is also disclosed which provides for the desired configuration of the substrate. The containment means further includes a cover design which locks into an open position to eliminate cross contamination. In addition, processes for the preparation of such cassettes and for use of the cassettes in separation and transfer apparatus are disclosed.

Abstract: A method for producing intaglio designs in cast acrylic material, wherein a moulding tool hotter than 600.degree. C. is applied to a surface contact area of an acrylic surface in which the intaglio copy of the moulding tool is to be formed, and the moulding tool is withdrawn from the surface contact area before the temperature of the tool or the acrylic material of said area falls below that at which methyl methacrylate vapor ceases to be produced by the depolymerization of the acrylic material. The preferred withdrawal temperature is above 250.degree. C.

Abstract: A method of producing extruded ceramic products by extruding a ceramic forming material through an extruding opening, includes a step of coating a liquid, which is nonvolatile at ordinary room temperatures, on a surface of an extruded ceramic product. The liquid is preferably coated on the surface with the aid of capillary action. An apparatus for producing extruded ceramic products includes a forward end portion having an extruding opening for extruding a ceramic forming material and a guide passage for introducing the ceramic forming material into the extruding opening, a liquid supply section provided on the forward end portion for supplying a liquid, which is nonvolatile at ordinary room temperatures, to an outer surface of a product of the ceramic forming material extruded from the extruding opening, and a liquid supply device for supplying the liquid to the liquid supply section.

Abstract: A disposable container for shipping a hazardous or ultra-high purity liquid material is disclosed, having a body of substantially vapor-impermeable organic polymer material, such as fluorinated linear high-density polyethylene, a bubbler tube extending from the top of the container having an open end near the bottom of the container, a liquid level detector, and an outlet tube on the top of the container having an open bottom end near the top of the container. A vapor-impermeable metal coating is provided on the outside of the container by vapor deposition or sputtering. A frangible seal is provided at the top of both the inlet tube and the outlet tube. A metal-coated polymer valve is provided on the bubbler, having vapor-impermeable seals isolating the metal exterior from the metal interior, and also having means for rupturing the frangible seal.

Abstract: Barriers used for separating silicone pressurizing medium from articles during curing, thereby protecting the article from silicone contamination. A composite precursor is substantially encapsulated by a barrier coating that is capable of substantially separating the composite precursor from silicone polymers at elevated temperatures during curing. The barrier coating is also capable of being chemically removed from the composite precursor subsequent to its cure without substantially damaging the composite. Composites are molded by protecting a composite precursor from a silicone pressurizing medium during curing utilizing a barrier coating. The method comprises encapsulating a composite precursor with a coating that is substantially capable of separating the composite precursor from silicone polymers at elevated temperatures. The coating is also capable of being chemically removed from the composite without damaging the composite.

Abstract: A process for making a moldable article for individualizing the operative surfaces of implements such as the hand grip of tennis racquets or hand tools. The moldable article is a sheet of polymeric material, including a polyurethane or thermoplastic-rubber copolymer component blended with volatile solvents and fillers to form a moldable mass that after receiving an individual's hand impression, for example, cures by solvent evaporation at ambient temperatures to a solid non-tacky hand grip. The moldable article is made by mixing the components together and forming a sheet which is sandwiched between semipermeable films that permit partial evaporation of the solvents. The sheet is then packaged between non-permeable films which prevent further evaporation until impressed by the consumer and exposed to air drying.

Abstract: In the manufacture of an article of ceramic material, for example a bladed turbine wheel of silicon nitride, there is first formed a plurality of article parts, at least one of which is a shaped powder body formed from powder of ceramic material mixed with a plasticizer, after which the plasticizer is driven off by a suitable heating operation. The article parts are then assembled together into a configuration conforming to that of the article to be manufactured, and the assembled article parts are surrounded with a gas-impermeable layer, for example a layer of glass. Finally, the assembled parts are isostatically pressed at elevated temperature to form the assembled article parts into a dense, homogeneous article.

Abstract: The invention relates to a pad for concrete intended to appreciably reduce the setting time of concrete. This pad comprises an essentially water an air tight flexible cover enclosing a heat insulating cushion resting directly over a lower part intended to be laid in contact with the surface of concrete. This lower part is made up of ribbons woven together in the form of a network in such a manner as to have a good mechanical resistance to wear by friction and so as to create a zone between the heat insulating cushion and the surface of the concrete capable of allowing the excess water oozing through the concrete surface to flow only slowly away, thereby avoiding the need of water from an outside source, allowing also the heat resulting from the setting reaction of concrete to accumulate inside the interstices of said network thus to accelerate the setting of the concrete. This pad is particularly useful and efficient during the year's period of cold weather where the setting of concrete is particularly long.

Abstract: Novel thin flexible decorative colored cementitious veneers of about 5 to 60 mils in thickness, useful in wall coverings, floor coverings and on ceilings; and methods of producing said thin decorative cementitious veneers wherein printing, embossing and casting are performed simultaneously. The basic method comprises the steps of placing a wet cloth on a mold engraved with a design followed by placing a plastic cement mix on said wet cloth to simultaneously form a casting and a temporary cloth mold which is the exact copy of the original mold, immediately removing the plastic cement casting together with the temporary cloth mold from the original engraved mold before it sets, thereby making the original mold immediately available for the next casting, removing the temporary cloth mold from said plastic cement casting before it sets, and air curing said casting while being stored.

Abstract: This invention concerns a method of manufacturing cementitious articles such as parpens, in which the articles are moulded, preferably by compression, on a base plate serving for handling the articles for the drying operations, especially steam drying.

Abstract: A method of efficiently curing and protecting a structural concrete column, beam or the like and which includes the steps of filling the form with concrete, removing the form upon the concrete becoming sufficiently rigid to be self-supporting but prior to the full curing thereof, and then disposing a tubular length of polymeric sheet material coaxially about the column and maintaining the same thereabout until the concrete is fully cured.

Abstract: A process and apparatus is described by means of which the pollution of the surrounding atmosphere by the fumes of isocyanate, liberated during the continuous formation of isocyanate-based polymer foam bunstock, is minimized. The bunstock, after the foam rise and gelation is completed, is passed through a zone, installed on the bunstock conveyor, in which the foam is subjected to the action of a fine mist of water sprayed on to the top and sides of the foam bunstock. The application of water in this manner does not affect the properties or appearance of the foam and any excess water coating the surface of the foam evaporates during the remainder of the passage of the bunstock down the conveyor. The above procedure is particularly applicable to the production of foam bunstock which is based on the highly volatile toluene diisocyanate.

Abstract: Production of high strength structural building components by steam curing a compressed mixture of laterite, lime and water at a temperature preferably between 70.degree. and 100.degree. C.

Abstract: Disclosed herein is an improvement in the process for manufacturing thermal insulation panels, especially those panels used in refrigerator cabinets. The panels are composite structures which comprise a layer of a gas filled cellular insulation material combined with a layer of impact resistant thermoplastic sheet material, wherein a film of a rubber modified high nitrile polymer containing at least 45% by weight of nitrile monomer units (calculated as acrylonitrile) is interposed between the gas filled cellular material and the thermoplastic sheet. The rubber modified high nitrile polymer film presents an effective barrier to the gas in the cellular material and provides improved impact strength in the composite while retaining good rigidity of the composite structure.

Abstract: There is disclosed an improvement in the continuous melt extrusion of a refractory polymer and its melt assistant by which a porous plug of the composition being extruded is formed between the compressing zone and the melting zone of the extruder so as to prevent loss of vaporized melt assistant by backward escape through the feed inlet.

Abstract: A method for cutting an arcuate groove in an uncured concrete coating on an arcuate surface. A jet stream of water is directed at the coating along a line extending tangentially of the surface in a downward direction. The object is rotated at a relatively low speed in relation to the stationary water jet. The invention also encompasses a method of applying a concrete coating to pipe wherein after the cement is forced onto the pipe a wrapping material is wound around the pipe in a spiral pattern to hold on the concrete. The wrapping material may be a water impervious plastic which will affect curing of the cement without the aid of chemical curing agents.