Abstract: A compound, 3,7,11,15-tetramethyl-2,4,6,10,14-hexadecapentaenoic acid, and a salt thereof are disclosed as a therapeutic agent for treatment of skin diseases with keratinization.

Abstract: An aluminum sheet having a prescribed thickness is obtained by compacting aluminum powder into a green sheet of packed aluminum powder, sintering the green sheet at temperatures of 300.degree. C to 600.degree. C and subsequently rolling and annealing the sintered sheet of aluminum powder at least once. A high-density sintered aluminum laminate is produced by piling a plurality of green sheets of packed aluminum powder one on top of another, sintering the pile of green sheets and then rolling and heating the sintered pile of sheets at least once.

Abstract: Device for swage-forging shafts has a lower die set which permits sidewise insertion of the work installed on the bed of a press assembly, and a rotary die set circumferentially equipped with a plurality of upper dies having definite shapes corresponding to each swaging step installed on the ram of said press assembly, said upper dies being arranged to be successively brought into position above the work on said lower die set by rotation of said rotary die set, whereby reciprocation of the ram will swage-forge the work.