Verfahren zur Herstellung von Filtermaterial aus partikelfoermigen, thermoplastischen Polymeren

In order to produce porous filter materials made of particulate, thermoplastic polymers, the invention proposes that at least part of the particles is added to a microwave-active agent, the particles are mixed and the mixture is exposed to a microwave field under the influence of mechanical pressure

Verfahren und Vorrichtung zum Aufnehmen eines Objektes

In order to produce a sharply focused image, in particular a magnified image of an object, a process is proposed by which a structure is projected onto the object, the object is recorded in several planes (focal planes) perpendicular to the direction of observation, the contrast of the adjacent image areas is determined for each plane, the contrast between corresponding image areas of different planes are compared with each other, image areas of maximum contrast are selected from various planes and at least the latter is provided as a contract maximum image for further processing

Polymerelektrolytmembran-Brennstoffzelle

DE 19951687 A UPAB: 20010615 NOVELTY - Fuel cell has several reaction chambers separated by a polymer electrolyte membrane with electrical conductors (11a, 11b) arranged in the chambers. The cell is formed from a bundle of hollow fibers (10), especially capillary hollow fibers. The electrical conductors of the same polarity are provided inside and outside of the hollow fibers and are connected to each other forming an anode and a cathode of the cell. DETAILED DESCRIPTION - The hollow fibers are preferably coated on both sides with an adsorptive catalyst material, preferably platinum or a platinum alloy with ruthenium, tin and nickel. USE - Producing electrical energy by the direct conversion of chemical energy from oxidation processes. ADVANTAGE - The cell has a simple structure and has a high power density