Abstract: A method for treating nitrate-contaminated water comprising treating said water with hydrogen-oxidizing denitrifying bacteria in the presence of hydrogen. The apparatus for use in this method preferably comprises: (a) a pure culture of autotrophic, hydrogen-oxidizing denitrifying bacteria; (b) a hydrogen generator; (c) a flow-through bioreactor; and (d) a filtration unit.

Abstract: A self-contained analyzer quantitatively detects a clotting event in a biological fluid. The device includes a base having an open reservoir for receiving the biological fluid. A carrier for a dried activator reagent is located in or adjacent to the open reservoir. The biological fluid reconstitutes the dried reagent and starts the clotting process. During the clotting process the fluid travels through a capillary flow channel lined with a precision woven fabric. When clotting is completed, the woven fabric stops the flow of the fluid. A colored bar formed by the fluid flowing through the capillary channel indicates the length of time required for clotting of the sample.

Abstract: A method for quantitatively measuring white blood cell count involves capture of white blood cells from a fluid sample by a retainer, removal of the red blood cells and other interfering substances by a wash solution, and reading the result of a color reaction in which an ester which is present on the white blood cells cleaves a chromogenic substrate which produces a water insoluble dye. The apparatus for use in the present method includes a retainer for white blood cells that has a dye substrate immobilized therein and an absorption layer that wicks and takes up all excess washing solution flowing past the sample.

Abstract: A dye is covalently bound to a polymeric film, especially a polyhydric polymer, for assays and other purposes. The dye may be one which, when it comes into contact with hydrogen peroxide, changes color to indicate the presence of hydrogen peroxide. This dyed film may be used in qualitative or quantitative assays. This method chemically immobilizes dyes on support matrices with much higher yields of immobilized dye than has heretofore been possible. The covalently immobilized dye may be immobilized on solid matrix particles and combined with a free-flowing dye component to form a two component dye system. By combining a dyed film-former with a film-opener, the amount of dye available for assay is greatly enhanced. This provides a dye system which can be used to detect and measure quantitatively, accurately and precisely high levels of hydrogen peroxide. These high levels of hydrogen peroxide may result from the enzyme-mediated decomposition of various analytes from undiluted whole blood samples.

Abstract: The invention concerns an apparatus for the continuous treatment of wet sludge produced in a sewage treatment plant.

Abstract: A waterproof waterbed frame safety cover is disclosed which completely encloses a waterbed decking board and upstanding rails. The waterbed frame safety cover comprises top and bottom sheets welded together along one end, wherein the remaining two sides and end are open for inserting a waterbed frame. The top sheet of the safety cover is formed to match the cavity of a waterbed frame having inwardly inclined upstanding rails and a contoured bottom mattress. A waterproof zipper closure seals the waterbed frame in the safety liner.

Abstract: A waterbed headboard bracket is disclosed for attaching a headboard to a waterbed frame. The waterbed headboard bracket comprises a Z-shaped elongated element including a pair of leg sections joined by an integral middle section. Each of the leg sections has a pair of slots for attaching to the waterbed frame and to the headboard. One pair of slots extend in the elongated direction of the elongated element. The other pair of slots extend transverse to the elongated direction of the elongated element. With the bracket mounted on the waterbed frame and the headboard, the headboard can be adjusted in the vertical and horizontal direction in relation to the waterbed frame.

Abstract: A waterbed mattress construction includes a plurality of water wave action dampening baffles which extend the vertical distance between the bottom and top interior surfaces of the mattress. The dampening baffles comprise flexible plastic strips welded to the interior bottom surface of the mattress, and floatation rods welded in a sleeve at the other end of the baffles. The baffles are so positioned within the waterbed mattress to provide lengthwise and diagonal dampeners which interfere with any water wave action.

Abstract: A waterproof waterbed safety liner is disclosed which completely encloses a waterbed mattress. The waterbed safety liner comprises top and bottom sheets welded together, wherein the top sheet has an opening for inserting the waterbed mattress, and a waterproof zipper closure for sealing the mattress in the safety liner. Should the waterbed mattress leak, the safety liner will prevent the water from spilling on the surrounding floor surface.

Abstract: The invention is applicable in production of the protein concentrate from the rape seeds, free of the thioglycoside-type noxious and toxic matters, and therefore suitable for food or fodder use.The method according to this invention is characterized in that prior to the water extraction process, the rape whole seeds are purified and classified (sorted) into at least two fractions, each containing the seeds of unified size, subsequently each fraction being subject to water extraction complete with inactivation of the mirosinase enzyme, whereafter the seeds -- while still in wet condition -- become deprived of the seed-leaves; then, the mixture of hull and seed-leaf undergoes washing in hot water, dripping off, drying and removing of hull and the not hulled seeds, if any.At last, the purified seed-leaves become deoiled and disintegrated using conventional methods.

Abstract: A waterbed assembly comprising a contoured frame, a waterbed mattress, and waterproof covers which completely seal the entire assembly. The contoured frame is structured to provide inwardly facing walls which dampen the water wave action normally associated with waterbeds. A plurality of internal baffles are positioned within the waterbed mattress to further dampen any wave action.

Abstract: Apparatus for synthesis of urea comprising a reaction vessel divided into a number of adjacent reaction zones by means of overflow-preventing plates with moving elements that are non-return valves.

Abstract: A method for coagulating milk proteins using reduced quantities of enzymes using a two-step process is disclosed. In the first step, a quantity of proteolytic enzyme insufficient to cause coagulation is added to milk at an acidity of .degree. SH of 6.0 to 8.5 and the temperature is maintained at 0.degree. C. to 32.degree. C. for a period of from 1 to 24 hours. In the second step, a second proteolytic enzyme is added at an acidity of .degree. SH of 7.0 to 12.5 and the temperature is maintained at 20.degree. C. to 45.degree. C. for a period of from 5 to 120 minutes. Curd is obtained with an amount of enzyme from 1/15 to 1/2 the amount needed in a single step process.