Abstract: The present invention relates to an arylphenoxy catalyst system producing an ethylene homopolymer or copolymers of ethylene and ?-olefins, and a method of producing an ethylene homopolymer or copolymers of ethylene and ?-olefins having a high molecular weight under a high temperature solution polymerization condition using the same. The catalyst system includes a group IV arylphenoxy-based transition metal catalyst and an aluminoxane cocatalyst or a boron compound cocatalyst. In the transition metal catalyst, a cyclopentadiene derivative and arylphenoxide as fixed ligands are located around the group IV transition metal, arylphenoxide is substituted with at least one aryl derivative and is located at the ortho position thereof, and the ligands are not crosslinked to each other. The catalyst includes an environmentally-friendly raw material, synthesis of the catalyst is economical, and thermal stability of the catalyst is excellent.

Abstract: The present invention relates to a ginseng preparation using vinegar and a process for preparing the same, more particularly to a ginseng preparation comprising high concentrations of ginsenosides (Rg3, Rg5, and Rh1), which are generated by heat and exist only small amounts in red ginseng comprising various organic acids of vinegar, including citric acid, which is prepared by adding vinegar of pH 2 to 4 to ginseng, heat-extracting the same for 0.5 to 24 hours, and a method for preparing the ginseng preparation.