Embodiments apply a cross-linking agent to a region of corneal tissue. The method accesses a leaderboard having a set of participants. The resulting thermal barrier coating may inhibit microbuckling of the thermally grown oxide scale that grows over time at the thermal barrier coating-bond coating interface. A retaining member is connected to the two connection ports and a second recess is defined in an inside of the retaining member. The contents may be communicated to a separation element to output a nitrified fluid stream overflow and for recycled a collected calcite particle stream.