A device for uniform emission of a composition having at least one volatile liquid attractant. The expanded solidification range slows the melting and wetting time so as to balance the surface tension of the molten solder, and in turn reduces the tombstoning frequency. The positioning mechanism preferably includes a pivot shaft spaced apart from the handlebar, a rotating member rotatable about the pivot shaft, a push mechanism for rotating the rotating member in a first direction and a return mechanism for rotating the rotating member in a second direction. The outer perimeter of the frame assembly includes a contact portion configured to contact another frame assembly or a structure, wherein the corner key cavity extends across at least 90% of the contact portion of the outer perimeter of the frame assembly. The method classifies convergence actions for the network element to identify convergence actions that can be implemented prior to complete digest synchronization during a convergence process to simplify and reduce convergence latency once digest synchronization is achieved. In one embodiment f the invention, the strain of Chlorophyta algae cells includes a strain f Chlamydomonas algae cells.