Abstract: Different designs of hand-held devices for therapeutic skin treatment by application of heat are known. Inexpensive hand-held devices use heat radiation. In practice, however, there is no inexpensive hand-held device available that can be placed on the skin to be treated and that operates according to the principle of heat conduction and allows the skin to be treated within a defined temperature range without the use of a temperature sensor and control elements.

Abstract: A hydraulic automotive vehicle brake system with wheel slip control includes at least one non-return valve with a closure member that is lifted from its valve seat during evacuation of the brake system. An elastomeric sealing element is arranged between the closure member and the valve seat member.

Abstract: A continuous process for the production of alcohol and yeast biomass by reaction in a uniform fermenting mixture of a sugar-bearing, aqueous slurry, starter yeast, yeast nutrients and an oxygen-bearing gas, wherein the yeast is a flocculating, bottom yeast, the portion of the wort which remains after separation of the alcohol-bearing medium therefrom, is recycled to the fermenting mixture, the oxygen-bearing gas is dispersed homogeneously throughout the fermenting mixture, and is introduced to maintain a mean-free oxygen concentration not greater than 1 ppm in the aqueous phase, and the process is controlled to maintain the measurable free sugar concentration in the fermenting mixture at a level which does not exceed 0.1 percent by weight, and to maintain the active yeast concentration in the fermenting mixture between 100 and 110 percent of the specific degree of fermentation.