Sequi SEQ Sequestrectomy of bone of humerus sequencing classification problem Sequestrectomy of tibia and fibula sequencing batch IAL-CHS reactor sequencing-batch biofilm reactor Sequestrectomy of phalanges of hand Sequestrectomy of olecranon process Sequestrectomy of phalanges of foot sequencing batch membrane bioreactor sequency field equivalence realization