A yellow ink composition includes C. Alternatively, the base material may be pre-oiled or both the base material and the dry strap may be pre-oiled. A capacitance change of the electrocaloric effect material at least in part responsive to the varying voltage may be measured. A single anchorment may be adapted to serve a plurality of tethers for fastening to a plurality of items. The pressurizer may be used as a propellant pump in a rocket engine.