Abstract: A DNA vaccine comprising hyperglycosylated mutant HA gene, which is derived from avian influenza virus, is provided. A DNA vaccine composition comprising: (a) the DNA vaccine; and (b) a booster is also provided. An influenza virus-like particle comprising adjuvant-fused M2 protein is further provided.

Abstract: A laser diode using asymmetric quantum wells includes a N-type semiconductor, a P-type semiconductor, a first quantum well structure, and a second quantum well structure. The first quantum well structure is between the N-type semiconductor and the P-type semiconductor, and includes at least one first quantum well having a first thickness. The second quantum well structure is between the N-type semiconductor and the P-type semiconductor, and includes at least one second quantum well having a second thickness greater than the first thickness of the first quantum well and a lasing wavelength greater than that of the first quantum well. The second quantum well is formed with a spike therein.

Abstract: A positioning-based virtual business operation system includes a seller equipment having a positioning device for acquiring positioning information of the seller equipment and a data transmitting/receiving device for transmitting the positioning information; an operation platform having a business information interface for receiving the positioning information of the seller equipment and updating location information of the seller equipment in the business information interface; and an operator equipment for transmitting operation service information to the operation platform via a network and adjusting service information of the seller equipment or operator information in the business information interface, thereby allowing consumers, mobile sellers, operators of virtual business, and operators of portal sites to benefit from the system and thus creating an all-beneficial business running pattern.

Abstract: A pull tab of the zipper head is composed of a pull piece and an elastic piece. The pull piece has a beam, a hook, and an insertion slot located between a fastening end of the hook and the beam. The hook has an open end. The elastic piece has an inner body, an outer body, a curved portion, and two urging portions. The elastic piece is engaged with the pull piece such that the inner body is located in the insertion slot, and that the open end of the hook is sealed off by the outer body, and further that the curved portion is located across the beam, and still further that the two urging portions urge the beam. The elastic piece is thus securely engaged with the pull piece.