%D 2023 %J Process Safety and Environmental Protection %T Semi-supervised adaptive PLS soft-sensor with PCA-based drift correction method for online valuation of NOx emission in industrial water-tube boiler %V 172 %L scholars20622 %A Saidatul Hasniza Hasnen %A Muhammad Shahid %A H. Zabiri %A Syed Ali Ammar Taqvi %O Cited by: 35 %P 787 - 801 %R 10.1016/j.psep.2023.02.080 %I Institution of Chemical Engineers