Abstract: The present invention relates to an injection formulation composition for use as a filler or a drug carrier through a click chemistry reaction. More specifically, the present invention relates to an injection formulation composition comprising: a first liquid comprising a first biopolymer having a first click chemistry functional group introduced thereinto; and a second liquid comprising a second biopolymer having a second click chemistry functional group introduced thereinto, wherein the first click chemistry functional group is chemically linkable with the second click chemistry functional group, to a method for preparing an injection formulation hydrogel using the composition, and to a medical filler, an in-vivo injection type supporter, or a drug carrier using the composition.

Abstract: The present invention relates to an injection formulation composition for use as a filler or a drug carrier through a click chemistry reaction. More specifically, the present invention relates to an injection formulation composition comprising: a first liquid comprising a first biopolymer having a first click chemistry functional group introduced thereinto; and a second liquid comprising a second biopolymer having a second click chemistry functional group introduced thereinto, wherein the first click chemistry functional group is chemically linkable with the second click chemistry functional group, to a method for preparing an injection formulation hydrogel using the composition, and to a medical filler, an in-vivo injection type supporter, or a drug carrier using the composition.

Abstract: A bicycle crank transmission apparatus includes: a hollow shaft member; a base plate coupled to the shaft member on one side and installed securely on a bottom bracket featuring a spindle on the other side; a chainring housing coupled to the shaft member in a way that allows its rotation and having a ring gear installed securely inside; a reduction gear unit arranged in the middle of the ring gear; a directly-coupled ratchet unit installed on the ring gear; a crank cover where a coupling shaft coupled to the spindle is perpendicularly provided in the center and where clutch ratchet teeth, which are engaged with the directly-coupled ratchet unit, and directly-coupled ratchet teeth are vertically stacked on the internal wall surface; and a sun gear installed on the coupling shaft in such a way that it only rotates in clockwise direction and partially engaged with the reduction gear unit.