Abstract: A tank filled with water and appropriate to receive such aquatic organisms, comprises a support bottom (1) under the water surface, presenting on the fresh water side in circulation, shelter holes shaped as pipes (3), wherein the aquatic organisms lives according to their natural way of life. Such shelters (3), adapted to the way of life of eels, have their upper opening (5) orientated in the fresh water stream (13) and extend inclined downwardly. To the contrary, for the breving of crustacea, those aquatic shelters extend horizontally from the fresh water compartment. A water stream (15) passes through such aquatic shelters between the fresh water compartment and the residual water compartment (25); said water stream entrains from the pipes (3) towards the residual water compartment excrements, food remains and other waste.

Abstract: Fibrous webs of improved bulk and softness are produced by subjecting hydrophilic papermaking fibers to mechanical deformation, e.g. hammermilling, sufficient to deform the fibers without substantial fiber breakage, dispersing the resulting curled or kinked fibers, preferably in admixture with conventional papermaking fibers, in an aqueous foam with minimal agitation and holding time and forming a wet laid web from the resulting fiber furnish.

Abstract: The pouring repair material for mortar or the like wall characterized in that it consists essentially of a synthetic resin emulsion, cement and slags with particle size less than 0.5 mm, and in that the weight ratios P/C, C/S and W/C are adjusted to 0.1 to 3, 1.5 to 2.5 and 0.35 to 0.40, wherein P designates solid contents of the synthetic resin, C cement, S slags and W water.

Abstract: A dispenser package for holding a stack of nested tapered disposable cups and dispensing them individually. The dispenser package has a generally circular opening in the top wall through which the bottoms of the tapered cups protrude; the opening is surrounded by a series of short radial slits or knife cuts defining a series of yieldable tabs around the periphery of the opening which permit the topmost protruding cup to be pulled through the opening, but which function to restrain the remaining cups in the stack. Additional slits or knife cuts in the top wall of the dispenser package extend from the opening in the top wall to each of the sidewalls at a point near each sidewall to permit loading a stack of cups through the top opening of the dispenser package without tearing of the top wall.

Abstract: A dispenser package for holding a stack of nested tapered disposable cups and dispensing them individually. The dispenser package has a generally circular opening in the top wall through which the bottoms of the tapered cups protrude; surrounded by a series of arcuate dispensing jaws interconnected with straight sided segments forming yieldable segments around the periphery of the opening which permit the topmost protruding cup to be pulled through the opening, but which function to restrain the cups immediately below. Slits or knife cuts in the top wall of the dispenser package extend from the opening in the top wall to each of the sidewalls at the mid point of each sidewall to permit loading a stack of cups through the top opening of the dispenser package without tearing of the top wall.

Abstract: Apparatus and method for the manufacture of a non-woven fibrous web, such as paper, from a dispersion of fibers in a foamed liquid. In a preferred embodiment, a solution of surfactant in water is initially discharged from a headbox into the nip of a twin forming wire prior to its passage over a curvilinear path defined by a forming roll. The water-surfactant solution is caused repeatedly to pass through the outer one of the twin forming wires until there is created, and stored in a silo, a foamed liquid containing about 65% air in the form of bubbles of from about 20 to about 200 microns in diameter. The foamed liquid is directed from the silo into a mix tank wherein a slurry containing fibers at 20% to 55% solids is added and mixed. The mixture is pumped to the headbox and into the nip of the forming wires. The outer wire retains the fibers while passing and again foaming the liquid for return to the silo and the mix tank for addition of fibers and return to the headbox.

Abstract: Apparatus and method for the manufacture of a non-woven fibrous web, such as paper, from a dispersion of fibers in a foamed liquid. In a preferred embodiment, a solution of surfactant in water is initially discharged from a headbox into the nip of a twin forming wire prior to its passage over a curvilinear path defined by a forming roll. The water-surfactant solution is caused repeatedly to pass through the outer one of the twin forming wires until there is created, and stored in a silo, a foamed liquid containing about 65% air in the form of bubbles of from about 20 to about 200 microns in diameter. The foamed liquid is directed from the silo into a mix tank wherein a slurry containing fibers at 20% to 55% solids is added and mixed. The mixture is pumped to the headbox and into the nip of the forming wires. The outer wire retains the fibers while passing and again foaming the liquid for return to the silo and the mix tank for addition of fibers and return to the headbox.

Abstract: A low aspect ratio airfoil or aircraft wing structure particularly useful in small personal aircraft and STOL aircraft wherein an improved propulsion system substantially eliminates wing tip vortices during take-off and climb operations. An air intake port on the upper surface of the airfoil adjacent the tip end of the foil supplies air for propulsion and increases the lift-to-drag characteristics of the aircraft.

Abstract: A shielding device for adjusting and maintaining constant optimum temperature conditions and/or for pollution controlling the water in a farming enclosure for fish and other aquatic organisms, comprising a warm water shield to prevent the warmer water of lower unit weight from flowing off laterally, and a cover for the warm water shield, and a cold water shield to prevent the cooler water of higher unit weight from flowing off laterally, and a lower bottom portion constructed as a collecting funnel to collect faeces and food scraps, and optionally a connecting netting to prevent the fish kept within the device from escaping, in which each of said warm water shield, said cold water shield, and said pollution control unit, may also be used independently, and, if desired, the device may be protected from ice drift and gales by being lowered.

Abstract: Methods and apparatus are provided for making improved pulsed neutron derived measurements of the carbon: oxygen ratio in subsurface earth formations. Plural radiation measurements are made as a function of time from the initiation of the neutron pulse to distinguish inelastic and thermal neutron interactions. These measurements are then combined in several different manners to provide an improved carbon:oxygen ratio measurement and multiple porosity and formation lithology indication measurements.

Abstract: Significant improvement in the recovery of hydrocarbons from a subterranean hydrocarbon-bearing formation is accomplished by injecting into the formation via an injection well drilled into a formation communicating with an adjacent producing well and containing sandstone and clay components, and aqueous solution of an acid such as hydrochloric acid and a fluorine-containing acid or salt and having dissolved therein an oxyalkylated acrylamido alkanesulfonic acid polymer whereupon the acid solution reacts with the acid soluble components of the formation creating passageways thus facilitating the flow of fluids therein and thereby increasing the recovery of hydrocarbons from the formation through the adjacent production well.

Abstract: Hydrocarbons are recovered from a subterranean hydrocarbon-bearing formation penetrated by an injection well and a production well by displacing hydrocarbons toward the production well using a drive fluid such as water thickened with a copolymer of (a) vinyl sulfonic acid alkoxylated with ethylene oxide or a mixture of ethylene oxide and propylene oxide and (b) acrylamide. Optionally, the drive fluid can be saturated with carbon dioxide and/or natural gas at the injection pressure.

Abstract: A process for the regeneration of coke-contaminated fluidizable catalytic cracking catalyst wherein the regeneration flue gas having a reduced concentration of carbon monoxide and regenerated catalyst having a reduced residual carbon content are obtained. By this method a fluidized dense catalyst phase of coke-contaminated catalyst is regenerated with an excess amount of oxygen-containing regeneration gas at an elevated temperature such that there is a controlled afterburn of carbon monoxide to carbon dioxide in the dilute catalyst phase whereby a flue gas having a carbon monoxide content of from 0 to 500 ppm is obtained. The residence time of catalyst in the fluidized dense catalyst phase is adjusted to provide a low level of residual carbon-on-regenerated-catalyst.

Abstract: A search is made down each trace of a seismic record at the approximate period of the multiple events to find a trace segment which most resembles a selected later segment of the same trace. An autocorrelation procedure is initially employed to determine the approximate period of the multiples and a crosscorrelation procedure is then employed to determine the time alignment of the two segments which produces maximum correspondence between the two segments. The degree of correspondence is determined by a "least-squares-fit" procedure. A portion of the earlier segment is subtracted from the later segment. The amount of the earlier segment to be subtracted is determined by the degree of correspondence. The procedure is incremented along the trace until the entire trace has been processed. Each trace is handled in the described manner until the entire record has been processed.

Abstract: An improved method is disclosed for the vapor phase epoxidation of ethylene to ethylene oxide which includes intimately contacting an ethylene-containing feed stream with an epoxidizing amount of molecular oxgyen epoxidizing agent in the presence of a catalytically effective amount of a novel supported, activated silver catalyst and, preferably in the presence of an effective amount of at least one inhibitor which retards combustion of ethylene to carbon dioxide at a temperature of from about 200.degree. C. to about 300.degree. C.The novel silver catalyst is best described in terms of its method of preparation. The catalyst is prepared by impregnating certain inorganic porous substrates with a specific silver carboxylate/amine complex impregnating solution. The impregnated support it then heated in order to evaporate volatiles, decompose the complex and activate the catalyst.

Abstract: A double acting, self-contained small diameter (31/2 inch) combination hydraulic-mechanical swage is disclosed using an arcuate guide having sliding contact with pivotal arms over a majority of the length thereof, the arms being pivotable with identation tips thereon for deforming and connecting together two small (less than 7 inches or 18 centimeters diameter) telescopic tubes for casing repair.

Abstract: A method for testing the minimum pullout strength of a ground anchor for an oil well derrick or other towers (as an antenna, guy line, or the like) comprises (1) connecting a housing means to the ground anchor, (2) positioning an elongated means deep in the housing means, (3) inserting a shear pin of a predetermined shear strength through the housing means and the elongated means, and (4) connecting a load applying means to the elongated means for applying the predetermined shear force to the shear pin, so that while applying an increasing load to the elongated means if the anchor does not move prior to exceeding the predetermined tension as indicated by breaking of the shear pin, a safe, satisfactory, and reliable anchor is indicated.

Abstract: Hydrocarbons are recovered from a subterranean hydrocarbon-bearing formation penetrated by an injection well and a production well by displacing hydrocarbons toward the production well using a drive fluid such as water thickened with a copolymer of (a) vinyl sulfonic acid alkoxylated with 2,3-epoxy-1-propanol and (b) acrylamide. Optionally, the drive fluid can be saturated with carbon dioxide and/or natural gas at the injection pressure.