Abstract: An oligopeptide comprises formulae (I) or (II) the oligopeptide derivative thereof, and a pharmaceutical composition comprising the same are provided.

Abstract: A Waterproof structure of the bag comprising a cloth surface (1) attached by a plastic inner layer (2), a plastic sidewall (3) and a cloth sidewall (4), characterized in that the plastic sidewall (3) embraces both sides, of the plastic inner layer (2), which are welded together by ultrasonic wave. The cloth sidewall (4) embraces the cloth surface (1) and the plastic inner layer (2) welded with the plastic sidewall (3), and both cloth surface(1), plastic inner layer (2) and cloth sidewall (4) are sewed up all together.

Abstract: A pitching apparatus for conducting batting practice wherein the apparatus spins and ejects a pitched ball in a predetermined pitching pattern into the air, and the batter swings a bat in order to hit the pitched ball. The pitching apparatus includes a housing having first and second side walls and a base member with a curved ball track member thereon for forming an interior wheel well. The pitching apparatus also includes a pitching rubber wheel member mounted within the interior wheel well and defining a space between the pitching rubber wheel member and the curved ball track member. The pitching apparatus further includes a first motor having a first motor shaft for rotating the pitching rubber wheel member in a clockwise rotation, and at least one positioning handle for adjusting the space between the pitching rubber wheel member and the curved ball track member in order to adjust the size of the space for receiving different size balls therethrough.

Abstract: A tee-ball server apparatus for conducting batting practice wherein the apparatus supplies a ball to a ball receiving seat member so the batter may swing a bat in order to hit the ball. The tee-ball server apparatus includes a movable rod having the ball receiving seat member thereon, with the movable rod being movable between a retracted position and an extended position within a server housing. The tee-ball server apparatus further includes a worm gear assembly for driving the movable rod between the retracted position and the extended position for receiving a ball on the ball receiving seat member to be hit; and a ball supply chute assembly is disposed adjacent to the server housing for supplying balls to the ball receiving seat member on the movable rod for the batter to hit the ball.