Abstract: A compound of general formula I Residues X1a, X1b, X2a, X2b, X3a, X3b, X4a, X4b, X5a, and X5b each independently are hydrogen or deuterium, with the provision that at least one of residues X1a, X1b, X2a, X2b, X3a, X3b, X4a, X4b, X5a, and X5b is deuterium.

Abstract: The invention provides a caster comprising a bracket, a first transmission device and two wheels. The two wheels are connected by a transmission screw and are fixed to the bracket. The first transmission device comprises an annular retaining portion and a plurality of first balls, the plurality of first balls are equiangularly arranged in a circumferential direction of the annular retaining portion, and opposite sides of the annular retaining portion are respectively embedded in the respective wheels. The caster of the invention can solve the problems in the prior art that it is difficult to control the gap between the two wheels, the resistance generated between the two wheels is large and noise is easily generated.

Abstract: The invention provides a caster comprising a bracket, a first transmission device and two wheels. The two wheels are connected by a transmission screw and are fixed to the bracket. The first transmission device comprises an annular retaining portion and a plurality of first balls, the plurality of first balls are equiangularly arranged in a circumferential direction of the annular retaining portion, and opposite sides of the annular retaining portion are respectively embedded in the respective wheels. The caster of the invention can solve the problems in the prior art that it is difficult to control the gap between the two wheels, the resistance generated between the two wheels is large and noise is easily generated.

Abstract: A power converter module includes a carrier board, a transformer, and an inductor. A converter and a rectifying unit are arranged on the carrier board. The transformer includes a primary winding portion and a secondary winding portion. The primary winding portion is arranged on first side of the carrier board and coupled to an output terminal of the converter. The secondary winding portion is arranged between the first side and the primary winding portion and coupled to the rectifying unit. The inductor includes an input portion and an output portion. The input portion is arranged on the first side and coupled to the rectifying unit. The secondary winding portion is implemented with a conductive plate, and the input portion and the conductive plate are integrally formed. The output portion is coupled to the input portion and arranged on the first side or a second side of the carrier board.

Abstract: A power converter module includes a carrier board, a transformer, and an inductor. A converter and a rectifying unit are arranged on the carrier board. The transformer includes a primary winding portion and a secondary winding portion. The primary winding portion is arranged on first side of the carrier board and coupled to an output terminal of the converter. The secondary winding portion is arranged between the first side and the primary winding portion and coupled to the rectifying unit. The inductor includes an input portion and an output portion. The input portion is arranged on the first side and coupled to the rectifying unit. The secondary winding portion is implemented with a conductive plate, and the input portion and the conductive plate are integrally formed. The output portion is coupled to the input portion and arranged on the first side or a second side of the carrier board.

Abstract: A system and method for facilitating a transaction comprises a payment gateway arranged to receive a group payment request arranged to identify a plurality of users each contributing a payment portion to a total balance of the transaction, a generating module arranged to generate a part payment request for each plurality of users with the payment portion, a payment interface arranged to transmit the part payment request to each plurality of users, a settlement interface arranged to receive part payment instructions from each plurality of users to settle each part payment request, a settlement module arranged to settle the part payment instructions to determine a combined settled amount, and, a processor arranged to determining an outstanding balance by comparing the combined settled amount with the total balance; whereupon an outstanding balance is determined, selecting a user from the plurality of users and settling the outstanding balance with the selected user.