Author:Sivakumar, V; Vishnu Prasanth, P; Kishore, P; Bencherif, H; Keckhut, PDate:2011For the first time, climatology of the middle atmosphere thermal structure is presented, based on 14 years of LIDAR and satellite (HALOE, SABER, CHAMP and COSMIC) temperature measurements. The data is collected over a southern sub-tropical ...Read more
Author:Kekana, Paul; Sithole, Bishop B; Ramjugernath, DDate:Dec 2016Ultrafiltration of lignin from black liquor was carried out in a stirred batch cell using polyethersulfone membranes. Parameters such as operating pressure, feed concentration, stirring rate and membrane cut-off size were varied and their ...Read morecb