Abstract: A novel soybean cultivar, designated SN83594, is disclosed. The invention relates to the seeds of soybean cultivar SN83594, to the plants of soybean SN83594 and to methods for producing a soybean plant produced by crossing the cultivar SN83594 with itself or another soybean variety. The invention further relates to hybrid soybean seeds and plants produced by crossing the cultivar SN83594 with another soybean cultivar.

Abstract: A novel soybean cultivar, designated 0053840, is disclosed. The invention relates to the seeds of soybean cultivar 0053840, to the plants of soybean 0053840 and to methods for producing a soybean plant produced by crossing the cultivar 0053840 with itself or another soybean variety. The invention further relates to hybrid soybean seeds and plants produced by crossing the cultivar 0053840 with another soybean cultivar.

Abstract: A novel soybean cultivar, designated SN83594, is disclosed. The invention relates to the seeds of soybean cultivar SN83594, to the plants of soybean SN83594 and to methods for producing a soybean plant produced by crossing the cultivar SN83594 with itself or another soybean variety. The invention further relates to hybrid soybean seeds and plants produced by crossing the cultivar SN83594 with another soybean cultivar.

Abstract: A novel soybean cultivar, designated 0053840, is disclosed. The invention relates to the seeds of soybean cultivar 0053840, to the plants of soybean 0053840 and to methods for producing a soybean plant produced by crossing the cultivar 0053840 with itself or another soybean variety. The invention further relates to hybrid soybean seeds and plants produced by crossing the cultivar 0053840 with another soybean cultivar.

Abstract: An anti-clogging or anti-bridging mechanism is disclosed which is structurally arranged to engage the nozzle ports in a cutting housing to seal the ports from pulverized road bed material. The mechanism further includes cable members which facilitate movement of the pulverized material through the cutting housing.

Abstract: A paving machine having a sensor-controlled concrete metering screed. The machine includes hydraulic cylinders which move the metering screed to various elevations to control the depth of concrete being metered out by the screed. At least one ultrasonic sensor is slide-mounted to the machine above and behind the metering screed to provide measurements of the distance between the sensor and the surface of the concrete just behind the screed. A control system compares the sensor measurements with a tolerance range of distances corresponding to the desired depth of concrete. When the sensor measurements are out of tolerance, the control system moves the metering screed up or down to bring the distance, and the metered depth of concrete, back within tolerance.

Abstract: A method of selectively extracting calcite and dolomite away from apatite in phosphate rock or phosphatic limestone wherein the phosphate rock or phosphatic limestone is treated with a mixture of sulfur dioxide, water, and a carbonyl compound. Solids are separated from the liquid phase. The solids consist principally of apatite admixed with clay, quartz, and other accessory minerals originally in the rock. The solids are heated to drive off adhering sulfur dioxide, water, and carbonyl. The liquid phase consists of carbonyl, water, sulfur dioxide, and magnesium and calcium ions. Heating this liquid preferentially precipitates CaSO.sub.3.1/2H.sub.2 O. This solid is filtered off and the filtrate further heated to precipitate MgSO.sub.3.3H.sub.2 O largely free of CaSO.sub.3.1/2H.sub.2 O. All off gas and filtrate is returned to the process.

Abstract: A roadway breaker plate for a planer apparatus having a drum type planer cutter for removing the top portion of an existing roadway, the breaker plate providing a counteracting shearing force on the top portion of the roadway at a predetermined distance from the planer cutter whereby the top portion of the roadway removed by the planer cutter is removed in the form of cuttings generally of a uniform size.

Abstract: A method of recovering uranium from wet-process phosphoric acid wherein the acid is treated with a mixture of an ammonium salt or ammonia, a reducing agent, and then a miscible solvent. Solids are separated from the phosphoric acid liquid phase. The solid consists of a mixture of metal phosphates and uranium. It is washed free of adhering phosphoric acid with fresh miscible solvent. The solid is dried and dissolved in acid whereupon uranium is recovered from the solution. Miscible solvent and water are distilled away from the phosphoric acid. The distillate is rectified and water discarded. All miscible solvent is recovered for recycle.

Abstract: A construction machine is provided with a flywheel having a torque limiter which permits the flywheel to slip when a rotationally driven cutting tool of the machine is halted. The torque limiter is spring loaded to eliminate the need for adjustment which might otherwise be occasioned by wear.

Abstract: A method of preparing dicalcium phosphate from phosphate rock wherein the rock is treated with a mixture of water, carbonyl, and sulfur dioxide. Solids are separated from the liquid phase. The solid phase consists of a mixture of gangue, and calcium .alpha.-hydroxysulfonate. Carbonyl and part of the sulfur dioxide are recovered from the solid by low temperature thermal decomposition. Dicalcium phosphate is precipitated from the liquid phase by partial distilling of SO.sub.2. All carbonyl is recovered for recycle.

Abstract: A slipform paving apparatus having a variable width frame assembly supported upon independently adjustable and steerable leg and track assemblies that are positionable in a paving profile or in a travelling profile. A detachable steering cable feedback and follower assembly interconnects a track assembly on one side to the respective track assembly on the other side, providing potential single side steering control. Road building implements include in sequence and in close proximity a traversing paddle assembly, a height adjustable vibrator assembly, a variable height strike-off assembly, a vibrated grout screed assembly, a profile pan assembly, and a float pan assembly cooperating with retractable slipforming means to form a finished concrete road lane upon a substrate. The implements are modularly designed so as to be capable of being parted and increased in road width building capability by the interdisposition of extension attachments between sections of each implement.

Abstract: The use of methoxylamine nitrate (CH.sub.3 ONH.sub.2.NHO.sub.3) as an addve to exothermally decomposing liquid monopropellants such as hydrazine and hydrazine water mixtures to lower the freezing points of the monopropellants and thereby render the monopropellants usable in gas generators at very low temperatures.

Abstract: The use of methoxylamine hydrochloride (CH.sub.3 ONH.sub.2. HCl) as an adive to exothermally decomposing liquid monopropellants such as hydrazine and hydrazine water mixtures to lower the freezing point of the monopropellants and thereby render the monopropellants usable in gas generators at very low temperatures.

Abstract: The use of methoxylamine perchlorate (CH.sub.3 ONH.sub.2.HClO.sub.4) as an dditive to exothermally decomposing liquid monopropellants such as hydrazine and hydrazine water mixtures to maintain energetic monopropellants and at the same time lower the freezing point of the monopropellants, thereby rendering the monopropellants usable in gas generators at very low temperatures.

Abstract: dicalcium phosphate is prepared from phosphate rock by a process which comprises reacting phosphate rock with sulfur dioxide and an organic carbonyl compound for 0.5 to 10 hours while maintaining the temperature of the reaction mixture below 50.degree. C. The reaction yields a mixture of gangue, solid calcium .alpha.-hydroxy sulfonate and soluble dicalcium phosphate. The solids are separated from the liquid and P.sub.2 O.sub.5 values adhering to the solid are washed free with a mixture of carbonyl, water, and sulfur dioxide. The wash effluent is recycled to the process and both carbonyl and some sulfur dioxide are recovered from the filter cake by heating it. The offgas from the heated filter cake is recycled to the process and the dry filter cake, now largely calcium sulfite hemihydrate, is discarded.Dicalcium phosphate is precipitated from the reaction mixture filtrate in high yield by partially distilling sulfur dioxide from the filtrate.

Abstract: liquid fertilizers having controlled release properties are prepared from fertilizer solutions and oil-surfactant mixtures. An invert surfactant is dissolved in an oil such as kerosene. The amount of surfactant used can vary over a wide range. Use of between 0.6 and 1.0 percent surfactant in the fertilizer formulation yields fertilizers with acceptable release rates. Liquid fertilizer is slowly added to the oil-surfactant mixture with vigorous agitation causing a water-in-oil emulsion to form. Mixtures containing 80 to 90 percent liquid fertilizer and 10 to 20 percent oil made excellent products.The final fertilizer product is an invert emulsion containing 80 to 90 percent liquid fertilizer, 10 to 20 percent oil, and 0.6 to 1.0 percent surfactant. The product consists of small droplets of liquid fertilizer solution surrounded by a thin but essential impenetrable oil-surfactant layer.

Abstract: a method of recovering uranium from wet-process phosphoric acid wherein the acid is treated with a mixture of an ammonium salt or ammonia, a metallic reducing agent such as iron, aluminum or zinc, and then a miscible solvent such as methanol. The precipitated solids, which are separated from the purified phosphoric acid, consist of a mixture of metal phosphates and uranium. This solid is dissolved in acid and the uranium recovered from the solution by liquid-liquid solvent extraction. The miscible solvent and some water are distilled away from the purified phosphoric acid. The distillate is rectified, the water discarded, and the miscible solvent recovered for recycle.When the miscible solvent is methanol, the optimum ranges of ammonia and methanol are 0.05 to 0.20 gram atom nitrogen per gram atom phosphorus and 1.93 to 3.15 pounds methanol per pound of orthophosphoric acid. The amount of reducing agent added should be sufficient to reduce all uraniun to U(IV).

Abstract: A method of selectively extracting calcite and dolomite away from apatite in phosphate rock or phosphatic limestone wherein the phosphate rock or phosphatic limestone is treated with a mixture of sulfur dioxide, water, and a carbonyl compound. Solids are separated from the liquid phase. The solids consist principally of apatite admixed with clay, quartz, and other accessory minerals originally in the rock. The solids are heated to drive off adhering sulfur dioxide, water, and carbonyl. The liquid phase consists of carbonyl, water, sulfur dioxide, and magnesium and calcium ions. Heating this liquid preferentially precipitates CaSO.sub.3.1/2H.sub.2 O. This solid is filtered off and the filtrate further heated to precipitate MgSO.sub.3.3H.sub.2 O largely free of CaSO.sub.3.1/2H.sub.2 O. All offgas and filtrate is returned to the process. Examination of extraction results shows that high temperature extraction favors dolomite extraction and low temperature extraction favors apatite extraction.