Abstract: An agent for removing malodor from a painting booth includes a volatile organic compound (VOC) degrading microorganism and a volatile fatty acid (VFA) degrading microorganism. The VOC degrading microorganism is configured to degrade VOC. The VFA degrading microorganism is configured to degrade VFA generated when the VOC is degraded.A method of removing malodor is also disclosed.

Abstract: Provided is a polarization-dependent lens structure. The lens structure includes an optically-isotropic polymer layer having a reverse lens shape on a first surface and a lens portion where the surface of the optically-isotropic polymer layer is filled with liquid crystalline polymers, nano-scale 1D lattice structures (nano-scale grooves) are formed on an upper surface thereof, and the liquid crystalline polymers are aligned by the nano-scale 1D lattice structures along a direction of long axes of the 1D lattice structures, wherein it is determined according to a polarization direction of incident light whether or not the polarization-dependent lens structure operates as a lens.

Abstract: Disclosed herein is an organic radical polyimide, represented by Formula I below: The organic radical polyimide can be applied to a cathode, an anode or the like, and can be widely applied to an organic solar cell, an organic transistor, organic memory or the like. Further, the organic radical polyimide can be used to manufacture a secondary battery having high energy density because it has high radical density. Further, the organic radical polyimide can be formed into an ultrathin film such as a polymer film and can be used to manufacture a flexible next-generation battery because it does not include metal components and causes a stable oxidation-reduction reaction.