Abstract: The invention describes novel preparations and their use for reducing the acute damaging effect of ammonia in organisms living in the keeping water of aquariums, garden ponds, or aquaculture systems. The preparations consist of adducts of sodium hydrogen sulfite at an aliphatic aldehyde of the general formula X—(CH2)n—CO—H, wherein n means the numbers 0 to 3, and X means an —OH, —COOH, or —CO—H group, wherein X cannot be —OH, if n=0. The preparations are used in the keeping water with a concentration of 10 to 140 mg/l.

Abstract: The invention describes novel preparations and their use for reducing the acute damaging effect of ammonia in organisms living in the keeping water of aquariums, garden ponds, or aquaculture systems. The preparations consist of adducts of sodium hydrogen sulfite at an aliphatic aldehyde of the general formula X—(CH2)n—CO—H, wherein n means the numbers 0 to 3, and X means an —OH, —COOH, or —CO—H group, wherein X cannot be —OH, if n=0. The preparations are used the keeping water with a concentration of 10 to mg/l.

Abstract: The invention describes novel agents und methods thereof for removing chloramine, chlorine, and other active chlorine compounds from water used for keeping organisms living in aquariums, garden ponds, or other aquaculture systems. The agents consist of sodium hydrogen sulfite, salts and organic derivatives thereof, or adducts of sodium hydrogen sulfite, preferably an adduct of aliphatic aldehydes of the general formula X—(CH2)n—CO—H, wherein n means the numbers 0 to 3 and X means a —OH, —COOH or —CO—H group, wherein X may not be —OH if n=0.

Abstract: The invention relates to agents for the removal or reduction of inorganic nitrogen compounds, especially nitrate, from biological aquarium waters, containing a biologically degradable polymer, preferably polycaprolactone (PCL) and to the utilization of said agents.

Abstract: A composition for long term improvement of water quality in biological tank systems is described as: 1) at least one highly or poorly soluble Al3+, Fe3+, TiO2+ or ZrO2+ salt of an organic carboxylic acid, optionally mixed with an organic carboxylic acid; 2) at least one water soluble N free biologically degradable organic compound; 3) at least one soluble alkali or alkaline earth metal salt of an organic carboxylic acid; and 4) at least one Mg2+ salt of an organic carboxylic acid, optionally mixed with at least one Ca2+ of an organic carboxylic acid; and also 5) trace elements and vitamins, particularly water soluble vitamins of the B series. Changes in water quality determining parameters can be reduced, minimized or eliminated by using the described agent and thus a significant reduction in partial water change frequency or a clear extension of periods without water changing can be achieved.

Abstract: The invention relates to agents for the removal or reduction of inorganic nitrogen compounds, especially nitrate, from biological aquarium waters, containing a biologically degradable polymer, preferably polycaprolactone (PCL) and to the utilization of said agents.

Abstract: The present invention is concerned with agents and processes for the production of biologically advantageous to almost natural maintenance water, especially for aquaria and garden pond water and also from biologically unfavorable to harmful starting water.

Abstract: The present invention provides a medicinal feed for fish, which comprises a triphenylmethane derivative or a combination of triphenylmethane derivatives alone or in combination with at least one compound selected from the group consisting of thionine, nitrothiazole, nitrofuran, quinoline and acridine derivatives, compounds splitting off aldehydes, transition metal derivatives, metal colloids, hexamethylenetetramine and/or quaternary ammonium salts as active materials.

Abstract: The present invention provides a medicinal feed for fish, which comprises at least one compound selected from the group consisting of thionine, nitrothiazole, nitrofuran, quinoline and acridine derivatives, compounds splitting off aldehydes, transition metal derivatives, metal colloids, hexamethylenetetramine and/or quaternary ammonium salts as active materials.

Abstract: The present invention provides a medicinal feed for fish, which comprises a triphenylmethane derivative or a combination of triphenylmethane derivatives alone or in combination with at least one compound selected from the group consisting of thionine, nitrothiazole, nitrofuran, quinoline and acridine derivatives, compounds splitting off aldehydes, transition metal derivatives, metal colloids, hexamethylenetetramine and/or quaternary ammonium salts as active materials.

Abstract: In a process for the treatment of at least one mixture of solid and liquid waste substances which contains at least one metal such as Fe and/or compounds thereof, for example oxides, the mixture occurring in a condition in which it can be used at least only with difficulty, the mixture is at least extensively homogenized and mixed with at least one very fine-grain dry substance containing fly ash and/or coke. The resulting mixture is of such a nature, for example being at least predominantly in the form of agglomerates, that it can be fed to a thermal procedure, possibly after a grading operation.

Abstract: A method of clarifying bodies of water and eliminating algal bloom caused by planktonic algae in water harboring biological systems is described using a novel flocculating agent prepared in an aqueous solution containing a combination of a monomeric or polymeric aluminum salt and a polybasic carboxylic acid; the method results in complete clarification of the body of water without harming fish that may be present; a preferred flocculating agent described includes a combination of polymeric aluminum hydroxy-chloride and L-(+)-tartaric acid.

Abstract: The invention relates to a swash plate swivel bearing for a hydraulic axial piston machine, in which roller-bearing segments are arranged between the hollow cylindrical bearing surface for the swash plate in the housing and the cylindrical bearing surface on the swash plate, which segments are held in curved cages with each of which is associated a tracker having a tracking mechanism guided by a guide member in a first guide, which mechanism is in drive connection with a carrier of the cage. It is the object of the invention to design a swash plate swivel bearing of the construction indicated above so that the guide member can cooperate directly with the carrier of the cage.

Abstract: For the removal of SO.sub.x and NO.sub.x from effluent gas, the gas, before being passed through a Selective Catalytic Reduction catalyst bed for reduction of at least a part of the nitrogen oxides in the gas, is subjected to at least substantially complete desulfurization in a coke bed. The desulfurized and denoxed gas can also be passed through a coke bed in which the ammonia which has not reacted in the SCR-catalyst bed is removed from the gas.

Abstract: A method of dissolving either a precipitate or deposit that contains essentially calcium carbonate comprising contacting the precipitate or deposit with a mixture comprising a first acid, the first acid being a Lewis acid in a concentration of 10 to 1000 mmoles/l, and a second acid, the second acid being a medium-strength to weak protonic acid or a partly deprotonated acid that yields at least one proton with the molar ratio of the second acid to the Lewis acid being between 1:1 and 6:1, the Lewis acid being a solution of at least one salt of a strong acid with cations selected from the group consisting of cations of a 3-valence main-group element, cations of a 3-valence transition element, cations of a 3-valence lanthanide, cations of a 3-valence actinide, cations of a 4-valence main-group element, cations of a 4-valence transition element, cations of a 4-valence lanthanide and cations of a 4-valence actinide.

Abstract: In a process for injecting a radioactive sample of a substance into a reaction vessel, the sample is first enclosed in a first container in which it is irradiated, and then the first container with sample is placed in a second container which is separated from the reaction vessel by way of a closed valve. The second container is heated, and the sample is then conveyed out of the containers into the reaction vessel through the valve which is opened. The sample is enclosed within the first container by plugs or is frozen therein for which purpose the first container may possibly by put into intermediate storage in a storage container. An apparatus comprises the first container for receiving the sample, to be arranged and fixed within the second heatable pressure-resistant container which can be communicated with the reaction vessel through a valve.

Abstract: In a process for making ferrous sulphate in granule form, ferrous sulphate heptahydrate is mixed with fine-grain brown coal or lignite having a low water content, in such an amount that the resulting mixture is pourable.

Abstract: A probe tube which is introduced into a reaction container for measuring the operating condition of a medium in the interior of the container has a first seal which is resistant to temperature and a second seal which is resistant to pressure and gas-tight. Those seal respectively close the inner and outer ends of the probe tube. The interior of the probe tube communications with the interior of the reaction container by way of an opening, whereby the temperature-resistant seal at the tip of the probe tube is relieved of the loading of pressure forces.

Abstract: In order to improve the handling capability of red mud, it is mixed with fine-grain coal material such as brown coal or lignite in dust form, in a ratio by weight of between 0.5-10:1. The liquid present in the red mud is bound by the very fine coal admixed therewith so that the resulting mixture can be stored in a silo and even pneumatically conveyed, and the oily properties of the red mud are removed by the treatment. The mixture is particularly suitable for use in connection with the hydrogenating liquefaction of coal in which the red mud is used as a catalyst.

Abstract: Treatment of water for selective and quantitative removal of all cations of the transition elements, with simultaneous adjustment of a definite mole ratio of calcium, magnesium, and the alkali metals, with a cation exchanger which, towards the ions of the I. transition elements, II. alkaline earth metals, III. alkali metals, shows a markedly gradually decreasing affinity from I. to III.; and which cation exchanger is loaded with calcium and magnesium ions in a predetermined mole ratio, or with hydrogen or sodium ions to obtain a water corresponding to the desired type of water in a vessel made of a water-resistant material and having at least one water-permeable wall.