摘要:
A process for filling a tube with granular material, which material is guided downwardly in a vertically oriented tube along a line provided with flexible elements in the shape of wires which are arranged substantially to the line, and having a radial dimension which is smaller than the inner diameter of the tube, the line being removed from the tube as the latter is filled with the granules, the line being moved during the removal movement with a non uniform speed which is related to the filling speed of the device.
摘要:
A cold gas spray gun is disclosed. The spray gun includes a high-pressure gas heater which has a pressure vessel through which gas flows and a heating element situated in the pressure vessel, as well as a mixing chamber in which particles can be admixed with the gas through a particle feed. A Laval nozzle is arranged downstream in the direction of flow of the gas and consists of a convergent section, a nozzle throat and a divergent section. The high-pressure gas heater and/or the mixing chamber is/are at least partially insulated on the inside in the areas of contact with the gas.
摘要:
The invention relates to water-soluble alkali salts of mono- and disulfonic acid derivatives and mono- and disulfonamide derivatives of 6,6'-methylene-bis-(2,2,4-trimethyl-1,2-dihydroquinoline) and dimer and/or trimer condensation products thereof bound with a methylene bridge at the 8 or 8' position. The new compounds are radioprotective and radiosensibilizers at the same time, and may be used both in the therapy and prophylaxis of malignant tumors.
摘要:
An apparatus for treating photopolymer printing plates, which have already been exposed, with liquid media, in which the plate, mounted on a vertically movable holder, can be moved up and down between an upper loading and unloading chamber and a lower treatment chamber, separated from the upper chamber by a partially open partition, and in which upper and lower rim elements of the plate holder seal the aperture in the partition in a vapor-tight manner when the plate holder is in its terminal positions.
摘要:
The invention relates to a nozzle for cold gas spraying in which gas and spraying particles are accelerated. According to the invention, the cold gas spraying nozzle is at least partially coated at its inner wall.
摘要:
Chiral selectors having α-unsubstituted β-amino acid derivatives of the structure: a stationary phase for separating substance mixtures containing the chiral selector, and processes for separating mixtures of chiral substances, including enantiomers, and especially enantiomers of substances selected from β-amino acids and derivatives thereof, α-amino acids and α-hydroxy acids are provided.
摘要:
The invention relates to a nozzle for cold gas spraying in which gas and spraying particles are accelerated. According to the invention, the cold gas spraying nozzle is at least partially coated at its inner wall.
摘要:
A cold gas spray gun is disclosed. The spray gun includes a high-pressure gas heater which has a pressure vessel through which gas flows and a heating element situated in the pressure vessel, as well as a mixing chamber in which particles can be admixed with the gas through a particle feed. A Laval nozzle is arranged downstream in the direction of flow of the gas and consists of a convergent section, a nozzle throat and a divergent section. The high-pressure gas heater and/or the mixing chamber is/are at least partially insulated on the inside in the areas of contact with the gas.
摘要:
A tension ring, particularly for connecting two tube ends, includes several mutually linked segments. A closing device detachably connects two segments with one another. The position of the segments relative to one another is adjustable at least on one hinge element between two segments. As a result of the closing device preferably constructed as a quick-acting closure, a prefixing/pretensioning can be achieved and, subsequently, the tension of the tension ring can be regulated to the desired extent by an adjusting device without opening the closing device again.
摘要:
A process for removing trioxane from a liquid mixture containing trioxane, water and formaldehyde, which includes distilling the liquid mixture in a first distillation stage at a low pressure, distilling the resulting distillate in a second distillation stage at a higher pressure and taking off trioxane as bottom product.