Abstract: Treatment of respiratory viral infections including coronavirus using photosensitizers. A photoactivatable phenothiazine derivative, preferably a photoactivatable phenothiazine dye such as methylene blue, new methylene blue, toluidine blue and mixtures thereof is administered to the naso-pharyngeal tract of a subject, and is then activated with a light source.

Abstract: Active compound formulations for animal nutrition of amino acids, vitamins, enzymes and pigments, which are suitable for providing the active compounds in protected form for the nutrition of stock animals, in particular ruminants, and a process for the preparation of these protected active compound formulations.

Abstract: A plug connector for media-bearing lines has a plug body for connecting to an opening. At least one rib is provided on the plug body, the rib being retained in the opening in the assembly position of the plug body by a retaining clip adjustable on the plug body. An assembly force acts on the retaining clip, the clip being supported on at least one rib of the plug body, thereby displacing the plug body into the opening, and locking therein in an undercut.

Abstract: The invention provides a plug connector for media-bearing lines. The plug connector has a plug body for connecting to an opening. At least one rib is provided on the plug body, the rib being retained in the opening in the assembly position of the plug body by a retaining clip adjustable on the plug body. An assembly force acts on the retaining clip, the clip being supported on at least one rib of the plug body, thereby displacing the plug body into the opening, and locking therein in an undercut.

Abstract: Active compound formulations for animal nutrition of amino acids, vitamins, enzymes and pigments, which are suitable for providing the active compounds in protected form for the nutrition of stock animals, in particular ruminants, and a process for the preparation of these protected active compound formulations.

Abstract: A process for the preparation of 2-hydroxy-4-methylthiobutyric acid.

Abstract: A process for the preparation of 2-hydroxy-4-methylthiobutyric acid.

Abstract: The invention relates to a process for operating a distributed computer network. The computer network has several distributed computers, on one of the computers there being a component of a computer program, a component which can run on the microprocessor of the computer. To operate the computer the component is accessed from a collocated client or a remote client. To accelerate processing of the computer program, it is proposed that the component be accessed from the collocated client via the local gate of the component if the component is filed on the same computer and runs within the same execution environment as the client, and otherwise the component is accessed from the remote client optionally via a proxy via a remote gate of the component.

Abstract: A process for the production of pellets containing nicotinamide by droplet-processing of molten nicotinamide by means of laminar jet disintegration in a tower and cooling of the molten droplets by heat exchange until solidified spherical particles are formed.

Abstract: A process is provided for the recovery of sulfuric acid from NH.sub.4 HSO.sub.4 and (NH.sub.4).sub.2 SO.sub.4 salts produced from the sulfuric acid hydrolysis of methylmercaptopropionaldehyde (MMP) cyanohydrin to produce 2-hydroxy-4-methylthiobutyric acid (MHA), which can be used as an additive in animal feed. The sulfate salts are combusted in a furnace to produce sulfur dioxide; the sulfur dioxide is contacted with an aqueous solution containing sulfuric acid and hydrogen peroxide, where the sulfur dioxide is converted into sulfuric acid. The product sulfuric acid is recovered.

Abstract: A method for the isolation of 2-hydroxy-4-methylthiobutyric acid (MHA), wherein MHA is isolated from a reaction mixture obtained by addition of hydrogen cyanide (HCN) to methylmercaptopropionaldehyde (MMP) and hydrolysis by sulphuric acid of the methylmercaptopropionaldehyde cyanohydrin (MMP-CH) thus obtained. The reaction mixture is brought into contact in a liquid/liquid extraction system with an organic solvent substantially immiscible with water, in order to form an extraction solution which contains the solvent and the MHA transferred out of the reaction mixture. By bringing the salt content of the reaction mixture, prior to the liquid/liquid extraction, to a concentration of about >50 wt. % (wt./wt.), preferably >55 wt.

Abstract: It is known to isolate MHA from a reaction mixture obtained by the addition of hydrocyanic acid (HCN) to methyl mercaptopropionic aldehyde (MMP) and the hydrolysis of the methyl mercapto propionic aldehyde cyanohydrine (MMP-CH) obtained thereby with sulphuric acid, in which the reaction mixture is brought into contact with a substantially non-water-miscible organic solvent, in order to form an extraction solution having the solvent and MHA transferred from the reaction mixture, and the MHA is obtained as an extract from this extraction solution by concentration. The simplest and most economical process of the invention concerning the processing of the reaction product which facilitates the production of a highly concentrated product with an extremely low dimer, oligomer and by-product content, is characterised in that the concentration is conducted in such a way that the remaining extract contains less than 4 wt % and preferably less than 2 wt % of water.

Abstract: The direct saponification of methionine nitrile obtained from methylmercaptopropionaldehyde, prussic acid and ammonia gives low yields, catalyst and educt losses and unwanted side-products. The aim of the invention is therefore to provide a method which can be carried out without isolating the intermediate products, in particular continuously, and with low losses. The ketone used is recovered in high yields after amide saponification since this liberates the ketone from side-products. In order to recover the ammonia, it is necessary for the ammonia to be substantially freed of ketone, the mixture of ammonia, ketone and water obtained being separated under pressure in a separation column. When the amide is saponified at .gtoreq.160.degree. C., amide concentrations of less than 25% by wt. are preferred. Methionine nitrile is produced by treatment with at least 4 equivalents of .gtoreq.50% by wt. ammonia at between 40.degree. and 80.degree. C./or between 5 and 60 min.

Abstract: A device for feeding the leader of a paper web from below to a rolling machine roll, with a number of guide plates which direct the web leader upward and which, viewed in the web running direction, are arranged increasingly more steeply and eventually vertically, additionally with blowing organs that feature each a hollow body arranged transverse to the web running direction and a number of nozzles arranged in the web running direction, and which, viewed in web running direction, are arranged each between two overlapping guide plates. The invention is characterized in that at least the blowing organ which, in the web running direction, precedes the first vertical plate features turbulence-generating nozzles.

Abstract: This invention relates to a process for the preparation of stable dispersions of hydroxyl-containing polyhydrazodicarbonamides in a hydroxyl-containing compound. The dispersions are prepared by the reaction of organic isocyanates, isocyanate-reactive compounds having a molecular weight in the range from 400 to 10,000, relatively low molecular weight isocyanate-reactive compounds, and hydrazines or hydrazides. This invention further relates to the dispersions prepared by said process, the use of the dispersions to prepare polyurethane foams having exceptional hardness, and the foams prepared thereby.

Abstract: A cutting device for a winding machine for winding a web of material, particularly a paper web, the winding machine having two support rollers, one of the support rollers being partially wrapped by the web of material which is advanced upward from underneath the support rollers and introduced into a space between the support rollers, to be wound into a finished roll which rests on the winding bed formed by the two support rollers. A tiltable cutting device includes a blade, a blade carrier, a connecting link, and a support structure. The blade carrier and the support structure are pivotally connected to each other by the connecting link in such a manner that the blade carrier can be tilted into a position in which the blade faces the web of material while the opposite end of the blade carrier rests against the outer surface of the unwrapped support roller.

Abstract: For the homopolymerization of ethylene or for the copolymerization of ethylene with other 1-olefins, a catalyst is used which comprises a trialkylaluminum compound and the entire product from the reaction of a magnesium alkoxide which is dissolved, suspended or dispersed as a gel in an inert solvent, with a tetravalent transition-metal compound and an organoaluminum compound, washing with an inert solvent and reacting with a halogenated metal compound. A polymer having coarse particles and a high bulk density is obtained.

Abstract: An anti-locking hydraulic brake system is described which includes a pump, the output of which flows through a pressure valve (20), a damping chamber (24), a check valve (28) and a throttle (3I) and is delivered to a pressure connection in communication with the wheel brake conduit. To ensure, in a compact structural design, a noise-minimizing hydraulic pressure source, while avoiding a flow back of pressure fluid from the brake system into the damping device, a check valve (28) is integrated into the damping device. A pressure valve is integrated with the check valve and damping chamber, with an elastomeric elastic member disposed in the damping chamber to absorb pressure pulsations.

Abstract: A winding machine with receiving stations for winding rolls arranged on both sides of a roller, to which web-form material runs alternately (as viewed in machine transverse direction). On a machine frame there are arranged axially unslidable load rollers following one upon another over the usable machine width. The load rollers are movable with operating arrangement against the winding rolls. For the use of the load rollers it is merely required that there be selected those rollers which lie within the width of the corresponding web strip.

Abstract: In an assembly device for replacing the block sleeve on the roller core of a printing roller unit a support device with a gripper is provided, which so secures the unit immediately adjacent to one end of the roller core in the vicinity of two adjacent tilting moment support points, that from said single holding zone both ends of the unit project freely without any further support and are therefore readily accessible. On a printing press it is possible to provide for each printing mechanism an assembly device of this type, in which the particular printing roller unit can be directly inserted by an inserting device from the press or machine mount.