Abstract: The invention relates to a process for producing finely divided high-surface-area materials coated with inorganic nanoparticles, and also the materials produced thereby, in particular catalysts for heterogeneous catalysis. The process according to the invention is characterized in that the finely divided high-surface-area material is contacted with a suspension of inorganic nanoparticles in a liquid medium in which the nanoparticles are bound to biopolymers, and in that, if appropriate, the catalytically coated finely divided high-surface-area material is dried.

Abstract: A substrate with spatially selective metal coating is produced by first applying biological templates onto parts of the surface of the substrate and applying a metal coating only once the biological templates have been deposited on the substrate. The biological templates are for example surface layer proteins (S-layer) and the metal coating is a noble metal coating. The substrates with spatially selective metal coating are used in catalysts or solid-state electrolyte sensors.

Abstract: The invention relates to a novel apatite-coated metallic material having improved surface quality and biocompatibility, a process for its preparation, and the use of the material for bone implants, in particular dental implants, artificial joints and fixative material for accident surgery (osteosynthesis material). The coating in this case consists of a thick covering of hydroxyapatite crystals and/or amorphous calcium phosphate spheres having a specific surface area of less than 15 m2/g.

Abstract: The invention relates to a game to test patience comprising rotatably mounted pieces. The game comprises at least two rotatably mounted or rotatably arranged pieces, whereby their diameters are bigger than the distances between them. From at least one piece at least one part is removed which includes at least the overlapped surface of the adjacent overlapping piece. The aim of the game is to put the pieces in a determined position. This is made difficult due to the limited rotation of the pieces.

Abstract: The invention relates to a novel apatite-coated metallic material having improved surface quality and biocompatibility, a process for its preparation, and the use of the material for bone implants, in particular dental implants, artificial joints and fixative material for accident surgery (osteosynthesis material). The coating in this case consists of a thick covering of hydroxyapatite crystals and/or amorphous calcium phosphate spheres having a specific surface area of less than 15 m2/g.

Abstract: The invention concerns a process for producing a gradient coating of calcium phosphat phases and metal oxide phases on metallic implants, in particular made of titanium or titanium alloys, for use as dental, jaw or joint implants. A solution containing calcium ions and phosphate ions is used as electrolyte of which the pH is slightly acidic to approximately neutral. The substrate electrodes are alternately polarized cathodically and anodically. The layer deposited in a gratuated manner is adherent, has a fine structure and is distinguished by a high degree of biocompatibility.