The present disclosure includes systems and techniques relating to representation and retrieval of data structures in databases. The assembly further includes a stator assembly including a stator vane that extends into the mainstream hot gas flow path and a turbine rotor assembly downstream of the stator assembly that includes a turbine disk and a turbine blade extending from the turbine disk into the mainstream hot gas flow path. The measuring location may be a location in a channel drilled from the wellbore into the formation. When operating as a receiver, the interface receives signals from the parallel data bus and restores the original signals which were combined and compressed. The public status register is reset either immediately after establishing the link or after call termination. The process includes the steps of reacting a ketone such as cyclohexanone with ethylcyanoacetate in the presence of ammonium hydroxide.