Abstract: Process for the production of a porous aluminum matrix for the negative electrode of a galvanic cell, in the charged state, having lithium aluminum and metal sulfide elements (or electrodes). Aluminum powder is thoroughly mixed, e.g., by grinding, with a fine salt, which is soluble in water and which serves as an expanding agent. Coarser particles of the same expanding agent (about 100 to 500 .mu.m in size) are then added. The matrix is finally completed by hot pressing at a temperature of 150.degree. to 300.degree. C. and a pressure of at least 500 bar and by the expanding agent being subsequently dissolved out of the matrix using water.

Abstract: A device for the separation of gaseous mixtures into components of differing molecular mass. The device is designed according to the principle underlying a turbine or a turbomolecular pump. The device has a rotor that is equipped with discs made of magnetic material having blades at their periphery and is installed in a stationary casing having a gaseous mixture inlet and at least two gas outlets connected to a gas delivery tube, and to whose inside wall stator discs are attached between the rotor discs. The device further has voltage means. The gas delivery tube has controls connected thereto which keep the total pressure in the gaseous mixture below 10 Pa.