A diagnosticprognostic system monitors performance of a vehicle or other apparatus wherein the vehicle has a plurality of operational components. Preferably, hydrophilic graft polymer chains are present on the hydrophilic surface of the substrate. Pharmaceutical compositions containing the compounds and a method of use of the present compounds and other agents for the treatment of AIDS and viral infection by HIV are also envisaged. The rigid assembly has a damper arranged between the free ends of the first and second elements so as to damp a detonation shock propagating to the free end of the first part when the pyrotechnic separation component is detonated. A threaded bolt used to tie the plates together, to which a liquid threadlocker is applied, is fabricated from a steel alloy suitable for use with aluminum.