Major advances in impression materials and their application have occurred during the last decade, with greater emphasis being placed on rubber impression materials than on dental compound, zinc oxide-eugenol, and agar and alginate. Of particular interest has been the effect of disinfection solutions on the qualities of impressions and the biocompatibility of impression materials. The principal...

the carrier facilitated transport of lithium picrate was studied using a series of non-cyclic polyethers containing different end groups and chain lengths through bulk liquid membrane (blm) and supported liquid membrane (slm) systems. the various membrane supports used are viz. ptfe, cellulose nitrate, and dialysis membrane and onion membrane. the amount of li+ transported depends upon the stru...

The design of reactive species that can either serve to initiate the ring-opening polymerization epoxides for synthesis high molar mass polyethers or be alternatively used catalyze polyether telechelics in presence chain transfer agents has long been an elusive goal. Here, we report a series bifunctional borinane-based catalysts enable living with unprecedented activity (TOF ? 1.8 × 105 h–1) an...