Abstract: A invention relates to a method for the investigation of house dust with respect to a potential for inducing an allergic reaction, by mixing the house dust with a protein detector for the determination in order of size of protein-containing constituents contained in the house dust; additionally, the invention also relates a detecting agent for the estimation of a potential of house dust for inducing allergic reactions using a detection constituent for characterizing a protein component.

Abstract: The prior art discloses machines which, for cooling the surface to be machined, have a gas supply line which opens into a gas outlet which is in the direct vicinity of the polishing disk. When CO.sub.2 is used as cooling gas, stoppages, which can be traced back to snow formation of the CO.sub.2, may occur in the line and in the gas outlet. In order to avoid blockages, the machine is assigned means for the supply of the liquid or supercritical CO.sub.2 which comprise a valve for regulating the throughflow quantity of the CO.sub.2 with an expansion nozzle, the valve being arranged inside the machine.

Abstract: A fire extinguishing device has a storage tank for a low-boiling liquefied gas which serves as the extinguishing agent. At least one connection line is equipped with a shut-off valve and an outlet nozzle leading from the storage tank into the area to be protected. A fire monitoring device which actuates the shut-off valve has sensors in the area to be protected. A cryo-compressor is located in the head space of the storage tank connected with an external cooling mechanism.

Abstract: A polishing device has a working area into which cold gas is fed continuously in order to cool the partial work-piece surfaces where work is to be performed to a temperature at which no changes occur to the work-piece surface except for polishing.

Abstract: A polishing device has a working area into which cold gas is fed continuously in order to cool the partial work-piece surfaces where work is to be performed to a temperature at which no changes occur to the work-piece surface except for polishing.

Abstract: Fluidized-bed counter-jet mills are gas-jet mills with which extremely fine milling results can be produced with very little wear and tear. An improvement in the milling results can be achieved by cooling the gas jets with a refrigerant, but the improvement that can be achieved is not substantial and the consumption of refrigerant is very high. In order to lower the consumption of refrigerant while considerably improving the fineness of the milled material, the coarse material which is separated by the grader of the mill is cooled by the refrigerant within the fluidized-bed counter-jet mill and fed back into the milling chamber. Liquid nitrogen is the preferred refrigerant with which the sump of the mill is cooled.

Abstract: Molded parts are deburred by being cooled down and treated with an abrasive. The parts are cooled down and circulated by a conveying gas which circulates in a circulation chamber, while the parts are treated with an abrasive introduced into the circulation chamber.

Abstract: A cabin for carrying out cryotherapy on the entire body with a cold treatment gas is made open from above. The distance from the upper edge of the cabin walls to the floor can be adjusted to the height of the patient's neck.

Abstract: A device for carrying out cryotherapy on the entire body includes a treatment chamber designed as a half shell in the rear part of which are openings for the exhaust of the treatment gas and in the side parts of which are openings for the supply of the treatment gas. The openings are located in nozzle strips which may be adjusted vertically and horizontally to adjust the pattern of gas flow within the treatment chamber.

Abstract: The homogeneity of highly reactive polycondensates is improved in a process involving batch operations in a reactor, followed by extrusion and then cooling by a coolant to the point of solidification after which the polycondensates are milled and removed. The cooling is carried out with a low-boiling liquified gas.

Abstract: A device for carrying out cryotherapy on the entire body with a cold treatment gas includes a cabin formed by shells which face one another an enclose the patient and which have opposing openings for the entry and exit of the treatment gas and which further allow the patient's head to remain free.

Abstract: An arrangement for transporting cryogenic refrigerant to a work area includes a robot with a phase-separator and an insulated flexible hose between the phase-separator and the work area. The phase generator is mounted above the work area. The hose is a coaxial hose in which the inner hose and an annulus created by the inner hose and an outer hose at the opening of the phase-separator are connected during the liquid phase.

Abstract: A device for generating a dry cold gas flow by evaporating a low-boiling liquefied gas for cold therapy for rheumatic diseases includes a vessel for accommodating the low-boiling liquefied gas. A hose line is connected to the vessel with an interchangeable treatment nozzle for distribution of the evaporated gas. The vessel has only a small storage volume, and in the vicinity of its bottom, it is provided with an adjustable electrical heater for evaporation of the liquefied gas. The hose line is connected to the vessel by means of an adjustable electrical heating line.

Abstract: A hose is formed as a spiral component hose of synthetic material, which is surrounded by a gas-tight corrugated hose of fiberglass weave coated with aluminum. The insulation for the hose consists of several sequential layers of synthetic material felts and synthetic material foils, preferably a total of three groups, each consisting of a polyester felt, an interior foil of polyethylene, and an exterior foil of polyethylene terephthalate. The outermost finish consists of a corrugated hose of synthetic material.

Abstract: The low temperature storage of biological or pharmaceutical samples by means of ampullas in a low temperature container should be as compact and easy to handle as possible. For this purpose, cases are arranged in such a container into which boxes containing the ampullas can be placed. Each box has pins on the inside, the center distance of which is equal to the outside diameter of the ampullas and in which the minimum distance from any opposing side walls of the box is equal to the whole number multiple of the outside diameter of the ampullas.

Abstract: An inert gas atmosphere of nitrogen and carbon dioxide is created in a refrigerated container having a diesel engine. A lower oxygen content is maintained by an oxygen limit control while the nitrogen is led into the interior of the container from a gas bottle connected with the container when the predetermined oxygen limit value is exceeded. While the inert gases are being supplied, a constant flow of cold gaseous nitrogen is produced by an electrical evaporator in the liquid nitrogen storage tank and connected to the generator of the diesel engine while carbon dioxide is removed from the gas bottle, heated, released to a constant pressure and fed into the container via throttle points constituting a parallel-switched group of such throttle points which can be individually activated.

Abstract: A device for generating a dry, cold air flow in the treatment of rheumatic diseases includes a cyclone separator as its heat exchange device. The intake line of the cyclone separator is connected to the outlet line of the blower means of a line in which the cryogenic liquefied gas feed ends. The outlet opening of the cyclone generator has attached to it an insulated flexible hose.

Abstract: A procedure for cooling work pieces includes mixing solid matter in the form of microscopic particles with a low boiling liquefied gas wherein the particles are suspended therein due to their specific weight or by the turbulence in the gas.

Abstract: A plastically deformable cooling agent consists of a mixture of liquid nitrogen with at least 8% by weight of fine-grained silica gel.

Abstract: A method of and an apparatus for producing an electrical conductor wire, especially a profiled heavy wire wherein the wire to be coated is guided subsequently through applying means, calibrating means and through a hardening chamber in which the individual layers of varnish are exposed to ultraviolet radiation of different intensity of irradiation. The layers which are applied onto the conductor wire in superposing manner have different properties wherein the wire is running through the apparatus after each occurring application of varnish.