Abstract: A composite sheet having a layer structure of at least two or more layers in which a porous sheet layer of a thermoplastic polymer having at least a melting point of not higher than 200° C. and a nonwoven fabric-like sheet layer containing at least one component of a fibrid, a short fiber or a fibrillated pulp of an organic compound not substantially having a stable melting point are stacked, the composite sheet being able to be used for condensers, capacitors and batteries, exhibiting a sufficient effect against high energy and large outputs and being suitable as a separator for secondary batteries or capacitors having both shutdown function and high-temperature shape stability.

Abstract: The invention provides an aramid thin sheet material comprising two components of aramid staple fibers and fibrillated aramid, or said two components and aramid fibrid, in particular, characterized by satisfying both of the following expressions (1) and (2): [internal resistance] (?m)?250 (?m)??expression (1) [Oken-type gas permeability] (sec/100 cm3)?0.5 (sec/100 cm3)??expression (2) wherein the [internal resistance] is a resistance value calculated by the following expression (3): [ internal ? ? ? resistance ? ? ] ? ( ? ? ? ? m ) = [ electrical ? ? ? conductivity ? ? of ? ? ? electrolyic ? ? ? solution ] [ electrical ? ? ? conductivity of ? ? ? electrolytic solution ? - ? injected ? ? thin ? ? ? sheet ? ? ? material ] × [ thickness ? ? of ? ? ? the ? ? ? ? thinsheet ? ? material ] ? ( ? ? ? ? m ) .

Abstract: A gene encoding a hydrogen peroxide-generating NADH oxidase and a method for preparing a large amount of the NADH oxidase with the use of the gene and gene recombinant techniques are disclosed.