Turbine blade airfoils, showerhead film cooling systems thereof, and methods for cooling the turbine blade airfoils using the same are provided. A new type of IS-IS packet is described that exclusively carries non-routing information. The Registering Entity may update reputation data based on a variety of events related to the domain name. Polymorphs of this compound and their use as PPAR ligands are also disclosed. The reflective layer, which is adhered to the second substrate, is disposed between the first substrate and the second substrate. The platform transmits, to the ground segment, path signature received by the platform via the message.