Author:Fatoki, OS; Bornman, M; Ravandhalala, L; Chimuka, L; Genthe, Bettina; Adeniyi, ADate:Jan 2010Phthalate ester plasticizers were determined in rivers and dams of the Venda region, South Africa. Liquid-liquid extraction, column chromatographic clean-up and capillary gas chromatography were the methods used for the quantitative analyses. ...Read more
Author:Oni, J; Ozoemena, KIDate:Aug 2012Numerous are the ways through which phthalocyanines have been put into very good use. The on-going search for new energy storage and conversion systems has made phthalocyanines even prettier as alternatives to metal and metal oxide catalysts ...Read more
Author:Gbadeyan, OJ; Bright, G; Sithole, Bishop B; Adali, SDate:Feb 2020In this study, microhardness and flow strength (tensile) of a shell of an African Giant snail (Achatina Fulica) were studied as a function of indentation load. The influence of loading direction on the hardness of the nacreous and prismatic ...Read more
Author:Zheltov, GI; Astafyeva, LG; Karsten, AEDate:Mar 2007A method for the calculation of blocking of blood flow upon treatment of vessel pathologies by laser irradiation at a wavelength of 530 nm are considered. The model is based on the assumption that blood-vessel occlusion is a consequence of ...Read more
Author:Zheltov, GI; Astafyeva, LG; Karsten, AEDate:Mar 2007A method for the calculation of blocking of blood flow upon treatment of vessel pathologies by
laser irradiation at a wavelength of 530 nm are considered. The model is based on the assumption that bloodvessel
occlusion is a consequence of ...Read more
Author:Mavundla, SE; Malgas, GF; Motaung, DE; Iwuoha, EIDate:2010Copolymers of aniline and pyrrole have been prepared by chemical oxidative- olymerization of aniline and pyrrole using ammonium per sulphate and ferric chloride as oxidants. The structural and morphological properties were studied by X-ray ...Read more
Author:Abraham, E; Deepa, B; Pothan, LA; John, Maya J; Narine, SS; Thomas, S; Anandjiwala, RDate:Nov 2012Cellulose nanofibres (CNF) with diameter 10–60 nm were isolated from raw banana fibres by steam explosion process. These CNF were used as reinforcing elements in natural rubber (NR) latex along with cross linking agents to prepare nanocomposite ...Read more
Author:Fairbanks, DHKDate:Jul 2000In an effort to develop more holistic ecosystem approaches to resource assessment and management, landscapes need to be stratified into homogeneous geographic regions. These regions can then be used in a monitoring framework to develop reliable ...Read more
Author:Lotter, D; Valentine, AJ; Van Garderen, EA; Tadross, MDate:Jul 2014Aspalathus linearis (rooibos) is a medicinally and economically useful shrub which is endemic to the Mediterranean west coast region of South Africa. Species distribution modelling indicates potentially severe consequences in range shift for ...Read more
Author:Devnarain, N; Crampton, BG; Chikwamba, Rachel K; Becker, JVW; O'Kennedy, Maretha MDate:Mar 2016Sorghum is particularly drought tolerant compared with other cereal crops and is favoured for subsistence farming in water scarce regions of the world. This study was conducted to identify South African sorghum landraces with superior drought ...Read more
Author:Oberholster, Paul J; Blaise, C; Botha, A-MDate:Aug 2010The occurrence of a sunflower oil spill in 2007 in the Con Joubert Bird Sanctuary freshwater wetland, South Africa, inhibited the growth of sensitive phytoplankton species and promoted that of tolerant species. The algal divisions Chlorophyta ...Read more
Author:Nyiligira, E; Viljoen, AM; Van Heerden, FR; Van Zyl, RL; Van Vuuren, SF; Steenkamp, PADate:Oct 2008The in vitro phytochemical and pharmacological investigation of the non-volatile extracts of five South African Vitex species (Verbenaceae); V. obovata ssp. obovata, V. obovata ssp. wilmsii, V. pooara, V. rehmannii and V. zeyheriwere investigated ...Read more
Author:Gibberd, M-J; Kean, E; Barlow, R; Thomalla, Sandy J; Lucas, MDate:Aug 2013A chemotaxonomic investigation of surface phytoplankton was undertaken on a research cruise to the Atlantic sector of the Southern Ocean during late austral summer 2009. Based on pigment signatures, several distinct regions emerged that were ...Read more
Author:Thomalla, Sandy J; Waldron, HN; Lucas, MI; Read, JF; Ansorge, IJ; Pakhomov, EDate:2010During the 1999 Marion Island Oceanographic Survey (MIOS 4) in late austral summer, a northbound and reciprocal southbound transect were taken along the Southwest Indian and Madagascar Ridge, between the Prince Edward Islands and 31° S. The ...Read more
Author:Ryan-Keogh, Thomas JDate:Jul 2021The uptake and application of single turnover chlorophyll fluorometers to the study of phytoplankton ecosystem status and microbial functions has grown considerably in the last two decades. However, standardization of measurement protocols, ...Read more