Abstract: A bill jam troubleshooting employed in a bill acceptor used in a consumer system includes the step of displaying an error message when a fake bill is identified by a sampling and validation module, the step of driving the transmission mechanism to carry the inserted bill back and forth over a validation zone repeatedly twice when a bill jam is detected, and the step of controlling the transmission mechanism to return the inserted bill to the bill slot. Thus, the invention improves the function and effect on the overall use of the product, and enhances the advantages and opportunities of commodity sales channels to increase product competitiveness.

Abstract: A bill jam troubleshooting employed in a bill acceptor used in a consumer system includes the step of displaying an error message when a fake bill is identified by a sampling and validation module, the step of driving the transmission mechanism to carry the inserted bill back and forth over a validation zone repeatedly twice when a bill jam is detected, and the step of controlling the transmission mechanism to return the inserted bill to the bill slot. Thus, the invention improves the function and effect on the overall use of the product, and enhances the advantages and opportunities of commodity sales channels to increase product competitiveness.

Abstract: Provided herein are methods of proliferating human mesenchymal stem cells obtained from human cord blood and/or human bone marrow aspirates comprising culturing the human mesenchymal stem cells in an environment containing extracellular matrix isolated form human fibroblasts.

Abstract: A battery holder adapted for attaching to a mobile telephone to provide it with battery power supply, the battery holder including a holder base holding a set of battery cells, a swivel hook member turned about an axis in an opening at one end of the holder base, the swivel hook member having a hooked portion adapted for hooking on a retaining hole on the mobile telephone to secure the battery holder and the mobile telephone together, a top cover covered on the holder base, and a spring element mounted between the top cover and the swivel hook member and adapted to force the hooked portion of the swivel hook member into engagement with the retaining hole on the mobile telephone.