A semi-automatic method for the simultaneous determination of the sequence and the d/l-configuration of amino acids in peptides is reported. The automated sequencing program was set up based both on the yield in the cyclization/cleavage reaction with 40 mmol dm23 boron trifluoride (BF3) etherate at 48 °C for 5 min and on the recovery of anilinothiazolinone(ATZ-) amino acids extracted with ethyl...

Creating back-of-the-book indexes is a difficult task involving intelligent and clerical processes. Programs have generally not achieved the level of intelligence required to perform the intelligent process of selecting terms for the index. Semi-automatic indexing programs perform the clerical process of preparing entries once the terms have been selected. The programs do not provide assistance...

A ratiometric indicator-displacement assay (RIDA) array has been developed for the semi-quantitative colorimetric determination of chloride, bromide, and iodide anions. Determinations of these halide anions follow the displacement reaction using the chelate compound of (2-(3,5-dibromo-2-pyridylazo)-5-(diethylamino)phenol) (3,5-Br2-PADAP) and heavy metal salts as colorimetric reagent. Different ...