Methods and systems for processing an iron ore tailings byproduct are described. In the formula, J represents formula J1, J2, J3, J4, J5 or J6; A1; A2; A3; A4; A5; B1; B2; B4; B5; and B6 each represent a nitrogen atom, etc. The oligonucleotides are used to diagnose or treat cancer, restenosis, a disease caused by a virus, a disease affected by integrins or cell-cell adhesion receptor or a disease triggered by diffusible factors. It is acceptable to configure the impedance converter with a voltage follower and connect the resistance R3 to the output. For each reference signal, the UE may modulate a cyclic shift of the base sequence with a known modulation symbol. The invention also relates to blends of sulfonimide functionalized phosphazene polymers with other polymers, membranes formed of the functionalized polymers, and the use of those membranes in devices such as fuel cells.