Conductances of different geometric conformations of boron ribbon devices are calculated by the ab initio method, The I-V characteristics of three devices are rather different due to the difference in structure. The c...Conductances of different geometric conformations of boron ribbon devices are calculated by the ab initio method, The I-V characteristics of three devices are rather different due to the difference in structure. The current of the hexagonal boron device is the largest and increases nonlinearly. The current of the hybrid hexagon-triangle boron device displays a large low-bias current and saturates at a value of about 5.2 uA, The current of the flat triangular boron flake exhibits a voltage gap at low bias and rises sharply with increasing voltage. The flat triangular boron device can be either conducting or insulating, depending on the field.展开更多
Objective To investigate the effect of gender differences in distal femoral geometry on the clinical outcomes of total knee arthroplasty (TKA).Methods From March 2003 to October 2006,213 cases with 294 osteoarthritic ...Objective To investigate the effect of gender differences in distal femoral geometry on the clinical outcomes of total knee arthroplasty (TKA).Methods From March 2003 to October 2006,213 cases with 294 osteoarthritic knees who展开更多
文摘Conductances of different geometric conformations of boron ribbon devices are calculated by the ab initio method, The I-V characteristics of three devices are rather different due to the difference in structure. The current of the hexagonal boron device is the largest and increases nonlinearly. The current of the hybrid hexagon-triangle boron device displays a large low-bias current and saturates at a value of about 5.2 uA, The current of the flat triangular boron flake exhibits a voltage gap at low bias and rises sharply with increasing voltage. The flat triangular boron device can be either conducting or insulating, depending on the field.
文摘Objective To investigate the effect of gender differences in distal femoral geometry on the clinical outcomes of total knee arthroplasty (TKA).Methods From March 2003 to October 2006,213 cases with 294 osteoarthritic knees who
