Abstract: A core-shell magnetic composite is disclosed, which includes: a magnetic core; a shell containing a protective layer and a porous layer, wherein the protective layer is coated on a surface of the magnetic core and the porous layer is the outmost layer of the shell; and a hydrophobic functional group grafted to the shell. In addition, the core-shell magnetic composite can be bound to a lipase to act as a transesterification catalyst. The present invention also relates to a method for producing biodiesel.

Abstract: A two-dimensional adjusting structure and a projection apparatus comprising the two-dimensional adjusting structure are provided. The two-dimensional adjusting structure comprises a first base, a second base, and a first slide rod and a second slide rod which extend along a first axis and a second axis respectively. The first slide rod is fixed to the first base. The second slide rod is adapted to move along the first axis with respect to the first slide rod by fitting the first slide rod into a first slide hole of the second slide rod. The second base is adapted to move along the second axis with respect to the second slide rod by receiving the second slide rod within a second slide hole. Thereby, the second base is adapted to move with respect to the first base upon a plane along the first axis and the second axis to adjust the relative position of a second object and a first object disposed on the first base and the second base respectively.

Abstract: A two-dimensional adjusting structure and a projection apparatus comprising the two-dimensional adjusting structure are provided. The two-dimensional adjusting structure comprises a first base, a second base, and a first slide rod and a second slide rod which extend along a first axis and a second axis respectively. The first slide rod is fixed to the first base. The second slide rod is adapted to move along the first axis with respect to the first slide rod by fitting the first slide rod into a first slide hole of the second slide rod. The second base is adapted to move along the second axis with respect to the second slide rod by receiving the second slide rod within a second slide hole. Thereby, the second base is adapted to move with respect to the first base upon a plane along the first axis and the second axis to adjust the relative position of a second object and a first object disposed on the first base and the second base respectively.

Abstract: The present invention provides an eyelash brush including a flexible body and a rigid body. The flexible body has a plurality of rows of soft brushes, and the rigid body is installed on a lateral side of the flexible body, and the rigid body has at least one row of hard combs.