http://hdl.handle.net/10204/894 Tue, 21 May 2013 14:43:51 GMT 2013-05-21T14:43:51Z http://hdl.handle.net/10204/6673 Title: Fabrication and properties of polylactic acid fabric based sandwich panels with arylated soy protein isolate as the binder Authors: Kumar, R; Moyo, D Abstract: PLA fabrics were coated with arylated soy protein isolate (ASPI) dispersions at different levels of 2,2-diphenyl-2-hydroxy ethanoic acid (DPHEAc) (1 to 10 wt.% wrt SPI). In order to optimize the level of DPHEAc in ASPI, the fabricated ASPI coated PLA fabric were subjected to mechanical, thermal, thermomechanical and water uptake studies. Interfacial interactions between ASPI and PLA were assessed by fracture morphology. Finally, ASPI coated PLA fabrics at the 5 wt.% of DPHEAc were successfully used to prepare sandwich panels with the ASPI coated PLA fabric skins for a Nomex based honeycomb core. The ultimate bending and peeling load of the sandwich panels with one layer of ASPI coated PLA fabric were determined. A few remnants of the honeycomb core attached to the PLA fabrics after peeling load tests visually suggested the presence of strong adhesive bond between honeycomb core and PLA fabric skins. Description: Copyright: 2012 American Scientific Publishers. This is an ABSTRACT ONLY. The definitive version is published in Journal of Biobased Materials and Bioenergy, vol. 6(5), pp 521-530 Mon, 01 Oct 2012 00:00:00 GMT http://hdl.handle.net/10204/6673 2012-10-01T00:00:00Z http://hdl.handle.net/10204/6607 Title: Production, consumption, and quality attributes of Akpan – a yoghurt-like cereal product from West Africa Authors: Sassa, C; Adinsi, L; Anihouvi, V; Akissoe, N; Dalode, G; Mestres, C; Jacobs, A; Dlamini, N; Pallet, D; Hounhouigan, D Abstract: Akpan is a high-potential, traditional yoghurt-like product made from fermented cereal starch, and consumed as a thirst-quenching beverage in Benin. This study investigated the characteristics of consumers, the traditional processing techniques and constraints, and the quality attributes of the product in order to find out the best options for possible industrial development. For this purpose, a survey was carried out in different municipalities using a questionnaire administered to stakeholders. While the production and commercialization of Akpan are undertaken exclusively by women, consumption cuts across all classes of people, with consumers in a wide range of socio-cultural groups, ages, and educational levels. Four types of Akpan were encountered, varying in their raw materials and processing technologies. Maize and sorghum were used either singly or in combination through submerged or solid-state fermentation processes. Among the product types, Akpan from maize ogi was the most preferred, mainly because of its long-established history, white colour, sour taste, and pronounced ogi aroma. Description: Copyright: 2012 Practical Action publishing. This is an ABSTRACT ONLY. The definitive version is published in Food chain, vol. 2(1), pp 1-14 Tue, 01 May 2012 00:00:00 GMT http://hdl.handle.net/10204/6607 2012-05-01T00:00:00Z http://hdl.handle.net/10204/6353 Title: Recovery of calcium carbonate from steelmaking slag and utilization for acid mine drainage pre-treatment Authors: Mulopo, J; Mashego, M; Zvimba, JN Abstract: The conversion of steelmaking slag (a waste product of the steelmaking process) to calcium carbonate (CaCO3) was tested using hydrochloric acid, ammonium hydroxide and carbon dioxide via a pH-swing process. Batch reactors were used to assess the technical feasibility of calcium carbonate recovery and its use for pre-treatment of Acid Mine Drainage (AMD) from coal mines. The effect of key process parameters, such as the amount of acid (HCl/Calcium molar ratio), the pH and the CO2 flow rate were considered. It was observed that calcium extraction from steelmaking slag significantly increased with increase in the amount of hydrochloric acid. The CO2 flow rate also had a positive effect of the carbonation reaction rate but did not affect the morphology of the calcium carbonate produced for values less than 2 L/min. The CaCO3 recovered from the bench scale batch reactor demonstrated effective neutralization ability during AMD pre-treatment compared to the commercial laboratory grade CaCO3. Description: Copyright: 2012 IWA Publishing. This is an uncorrected proof of the article. The definitive version is published in Water Science and Technology, vol. 65(12), pp 2236-2241 Fri, 01 Jun 2012 00:00:00 GMT http://hdl.handle.net/10204/6353 2012-06-01T00:00:00Z http://hdl.handle.net/10204/6187 Title: A natural microbicide (BP36) against HIV-1 Authors: Maharaj, V Abstract: In this presentation the author outlines the steps taken in developing a South African indigenous plant-based microbicide to prevent HIV infection in women. Description: 4th CSIR Biennial Conference: Real problems relevant solutions, CSIR, Pretoria, 9-10 October 2012 Mon, 01 Oct 2012 00:00:00 GMT http://hdl.handle.net/10204/6187 2012-10-01T00:00:00Z