An entraining device in the nature of a paint gun receives pressurized air, which entrains a hair treatment formulation into the stream of pressurized air. The hybrid disk drive includes a volatile memory unit, a nonvolatile memory unit, a disk unit, a host interface and a buffer controller disposed between the volatile memory unit, the nonvolatile memory unit, the host interface and the disk unit. In an embodiment, the target device is a mobile device and the original device is a desktop; the target device captures a data glyph that is visually presented on a display of the original device and the data glyph is then seamlessly communicated to a server manager for authentication and session migration. The database generation unit generates or updates a database based on the data accumulated in the storage unit. The external supply pipe is disposed on an exterior of the steam turbine casing, which allows for direct measurement of steam flow to the mid-span packing.