Reviews the earthquake phenomenon and its possible relation to ionospheric disturbances. Discusses the basic physical principles involved and the methods upon which instrumentation is being developed for possible use in a tsunami disaster warning system. (GA)

This paper gives an account of research on the structure of turbulence close to a solid boundary. Included is a method to study the flow close to the wall of a pipe without interferring with it. (Author/JN)

Reviews the scope and dimensions of engineering new surface technologies. Focuses specifically on thermochemical treatments. Identifies the more widely used thermochemical treatments and describes the nitrocarburising and bonding treatments in particular. (ML)