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Rhodes eResearch Repository (2,360 recursos)
Repository of the academic and research output of the Rhodes University community.

Mostrando recursos 161 - 180 de 499

161. Stuffed birds on trees: an historical review of avian systematics in southern Africa - Craig, A.F.J.K.
Avian systematics in southern Africa has been heavily dependent on a small number of museum-based specialists.

162. The development of a geomorphological classification system for the longitudinal zonation of South African rivers - Rowntree, K.M.; Wadeson, R.A.; O'Keeffe, J.
The recognition of the Reserve by the new South African Water Law poses new challenges for river scientists.

163. Controls on channel form and channel change in the Bell River, Eastern Cape, South Africa - Rowntree, K.M.; Dollar, E.S.J.
Channel instability has occurred in the Bell River in the form of meander cutoffs, incipient meander cutoffs, and general channel instability.

164. Rainfall characteristics, rainfall reliability and the definition of drought : Baringo district, Kenya - Rowntree, K.M.
Monthly rainfall data for Kabarnet District Office, together with comments taken from the Baringo District Annual Report, are used here to examine the relationship between rainfall characteristics and agricultural drought experienced over the period 1915 to 1943 in order to establish the meteorological criteria for a definition of drought applicable to the former Kerio Native Land Unit, Baringo District, Kenya.

165. Review of the African distribution of the brine shrimp genus Artemia - Kaiser, H.; Gordon, A.K.; Paulet, T.G.
They have been extensively studied due to their high monetary value as food for larval fish in aquaculture and their unique reproductive strategies.

166. Development and validation of a stability-indicating analytical method for the quantitation of oxytocin in pharmaceutical dosage forms - Chaibva, F.A.; Walker, R.B.
The conditions are as follows, column: Phenomenex® C18 Hypersil, 5 ?m packing, 4.6 mm × 150 mm with acetonitrile–phosphate buffer (pH 5; 0.08 M) (20:80) as the mobile phase with UV detection at 220 nm The method was found to be specific for OT in the presence of degradation products and chlorbutol (preservative) with an overall analytical run time of 16 min.

167. The importance of phytoplankton size in mediating trophic interactions within the plankton of a southern African estuary - Froneman, P.W.
The influence of the phytoplankton size composition in mediating the trophic interactions between the bacteria, phytoplankton, microheterotrophs (<200 ?m) and mesozooplankton (>200 ?m) was investigated on three occasions in a warm temperate, temporarily open/closed estuary situated along the southern African coastline.

168. Phloem loading in the sucrose-export-defective (SXD-1) mutant maize is limited by callose deposition at plasmodesmata in bundle sheath-vascular parenchyma interface - Botha, C.E.J.; Cross, R.H.M.; van Bel, A.J.E.; Peter, C.I.
Using Lucifer Yellow we have demonstrated that the phloem-loading pathway from the mesophyll to the bundle sheath-vascular parenchyma interface in Zea mays source leaves follows a symplasmic route in small and intermediate vascular bundles in control as well as in the green sections of mutant sucrose-export-defective (SXD-1) plants.

169. Pension payouts, periodic marketing and the continuance of urban dependence in rural South Africa - Fox, R.C.; Nel, E.L.
The former homeland areas of South Africa are characterised by extreme poverty, high levels of urban dependence, a reliance on pensions and low levels of agricultural production.

170. Zambia African Media Development Initiative (AMDI) research report - Banda, Fackson
This report is one of 18 produced as part of the African Media Development Initiative Research Project, completed in 2006.

171. Alternative media: a viable option for Southern Africa? - Banda, Fackson
It concludes that alternative media emerge to deal with specific ideological projects and, as such, must be viewed as satisfying a specific need at a specific point in time.

172. A watchdog's guide to investigative reporting: a simple introduction to principles and practice in investigative reporting, Derek Forbes: book review - Banda, Fackson
This article reviews the book by Derek Forbes.

173. The Benthic invertebrate community of a Southern Cape estuary : structure and possible food sources - Whitfield, A.K.
Cluster analysis of invertebrate communities in the Swartvlei estuary revealed that vegetated (Zostera capensis) sites were distinct from unvegetated ones.

174. The remains of rock glaciers in Bottelnek, East Cape Drakensberg, South Africa - Lewis, C.A.; Hanvey, P.M.
Radiocarbon dating indicates that rock glaciers were active at or subsequent to 21 000 BP and that cold, stadial conditions, existed on the region after 27 000 BP and before 13 000 BP, during the Bottelnek Stadial.

175. Racial segregation in East London, 1836-1948 - Nel, E.L.
Urban racial segregation in East London has a distinctive heritage, making the city one of South Africa's most segregated in the pre-Union era.

176. A review of estuarine ichthyology in South Africa over the past 50 years - Whitfield, A.K.
Progress in South African estuarine ichthyology between 1946 and 1995 is reviewed.

177. Local government and coloured residential segregation in Port Elizabeth, 1964-1976 - Taylor, B.
Studies of racial territorial segregation affecting the coloured population in Port Elizabeth tend to perceive it as an outcome of a power struggle between central and local government over the implementation of apartheid legislation.

178. Graphicacy as a form of communication - Wilmot, P.D.
Children of today inhabit a multi-dimensional world and in order to communicate effectively in it they need the ability to utilise four forms of communication namely, oracy, literacy, numeracy and graphicacy.

179. Where has all the Geography gone? : a social constructivist perspective of Curriculum 2005 - Van Harmelen, U.
The apparently tenuous position of geography in Curriculum 2005 suggests the need to reassess the nature and role of geographical education for the South African learner.

180. African Coelacanth Ecosystem Programme: An overview of the conference contributions - Ribbink, A.J.; Roberts, M.
Latimeria chalumnae is the icon for the multidisciplinary, multinational African Coelacanth Ecosystem Programme (ACEP) dedicated to improving the understanding of biological and other processes that support marine life.

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