A simple technique for bonding lingual retainer.

The present article describes an easy method to place a bonded lingual retainer. This technique is also helpful in limiting the flow of the acid etchant used for etching and also limiting the flow of the adhesive on to the lingual surfaces of the teeth.

Development and characterization of a novel immobilized microbial membrane for rapid determination of biochemical oxygen demand load in industrial waste-waters.

The rapid determination of waste-water quality of waste-water treatment plants in terms of pollutional strength, i.e. biochemical oxygen demand (BOD) is difficult or even impossible using the chemical determination method.