The paper describes a case study devised to create frameworks for effective Computer Mediated Communication within the context of resource-based learning in higher education. It investigates the hypothesis that effective use of online discussion forums can complement face to face learning and teaching by engaging the students in discussion-based collaborative activities. Additionally, it explor...

Bait usage in the KwaZulu-Natal recreational and commercial linefishery was assessed using historic fisher-derived data and current sales records of bait providers. Total bait usage in two of the three linefishery components in KZN was estimated to range from 928 3,400 tonnes per year. A total of 39 different bait types were identified to have been used in the KZN linefishery, and sardines (Sar...

A cytological, cytochemical, and cytometric study of plasma cells from 195 cases of multiple myeloma showed that, contrary to earlier reports, flaming cells, thesaurocytes, and intranuclear inclusions are not confined to IgA-secreting cases but are common also in IgG and Bence Jones varieties of myeloma. IgA-secreting cells are not larger, nor do they have a lower nuclear cytoplasmic ratio than...

A low SV causes relatively slow pyrolysis conditions at around 600°C, and produces high yields of charcoal 20-30%, large quantities of unburned tars, and a gas with high hydrocarbon content and high tar (volatile) content. A high SV causes very fast pyrolysis, producing less than 10% char-ash at 1050 C and hot gases at 1200-1400 C in the flaming pyrolysis zone. These gases then react with the r...

Experiments have been conducted to study the controlling mechanisms involved in the transition from smoldering to flaming of a porous combustible material, flexible polyurethane foam, with an air flow forced across one of the porous-fuel surfaces. The experiments are performed in a small-scale, vertical, combustion wind tunnel, with the air flow forced upward and parallel to an exposed foam sur...