Abstract: Novel compositions of molecular sieve adsorbents are provided in which at least 50% of the exchangeable cations are selected from those of Li, Ca, Ag and Cu and which have within their pore system metal oxide, metal oxide precursors or mixtures thereof. These compositions are useful for the separation of gases and, in particular, the separation of nitrogen from air to produce oxygen or oxygen-enriched gas.

Abstract: A side connection terminal block of the kind comprises a generally tubular stirrup member fixed relative to an insulating material body common to two connecting terminals and laterally accessible at each end from the outside of the body through a lateral opening therein, for insertion of an electrical conductor. A clamping screw is immobilized axially relative to the stirrup member but relatively rotatable. A cable clamp presses the electrical conductor against a connecting link common to the two connecting terminals. The cable clamp which is disposed inside the stirrup member is prevented from rotating relative thereto and is interlocked with said clamping screw. The clamping screw is entirely disposed within the stirrup member common thereto.