Faculty of Natural Sciences: Recent submissions
Now showing items 2421-2440 of 2527
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Characterisation of human coronavirus-NL63 nucleocapsid protein
(Academic Journals, 2012)Coronavirus N is a multifunctional protein that plays an essential role in enhancing the efficiency of virus transcription and assembly. This manuscript reports the analysis of HCoV-NL63 N protein by comparing the amino ... -
Understanding human coronavirus HCoV-NL63
(Bentham Science, 2010)Even though coronavirus infection of humans is not normally associated with severe diseases, the identification of the coronavirus responsible for the outbreak of severe acute respiratory syndrome showed that highly ... -
Groundwater management issues in Southern Africa – An IWRM perspective
(Water Research Commission, 2008)In contrast to its strategic role as essential resource to help achieve community development and poverty alleviation in the Southern African Development Community (SADC), groundwater has remained a poorly understood and ... -
Assessment of microbial contamination of groundwater in upper Limphasa River catchment, located in a rural area of northern Malawi
(Water Research Commission, 2012)In rural Africa, scientific evidence is often lacking to guide the scaling-up of groundwater as the safest source of potable water. An investigation was conducted in the Upper Limphasa Catchment in northern Malawi to ... -
Salinity of irrigation water in the Philippi farming area of the Cape Flats, Cape Town, South Africa
(Water Research Commission, 2013)This paper explores the nature, source and spatial variation of the salinity of water used for irrigation in a coastal urban farming area in Cape Town, South Africa, where water from the Cape Flats aquifer is drawn into ... -
In-situ ultrasonic monitoring of zeolite A crystallization from coal fly ash
(Elsevier, 2012)In this study, high phase purity of zeolite A was prepared from coal fly ash precursors. The molar regime of both the clear solution extract and unseparated fly ash slurry was adjusted to achieve the right composition for ... -
Effects of herbivore grazing on the physiognomy of the coralline alga Spongites yendoi and on associated competitive interactions
(National Inquiry Services Centre (NISC) and Taylor & Francis, 2008)The territorial gardening limpet Scutellastra cochlear occurs along the south and southern west coasts of South Africa, while one of its primary food items, the encrusting coralline alga Spongites yendoi, extends much ... -
Mobile vertical handover between infrastructure and ad hoc Wi-Fi networks
(Telkom, 2011)This paper addresses mobility management issues in an environment with both wireless LAN and wireless mesh networks. We first examine wireless mesh network client side transparency within mesh mobility management protocols ... -
Situation-aware routing based on link quality for static mesh networks with mobile nodes
(Telkom, 2011)Situation-aware routing seeks to improve quality of service on hybrid wireless mesh networks by making routing decisions based on the current situation of the network. BATMAN-adv is a mesh routing protocol that counts ... -
Communicating in designing an oral repository for rural African villages
(IIMC International Information Management Corporation, 2012)We describe designing an asynchronous, oral repository and sharing system that we intend to suit the needs and practices of rural residents in South Africa. We aim to enable users without access to personal computers to ... -
The growth of post-weaning abalone (Haliotis midae Linnaeus) fed commercially available formulated feeds supplemented with fresh wild seaweed
(National Inquiry Services Centre (NISC) and Taylor & Francis, 2008)The effect of five formulated feeds, supplemented with fresh wild seaweed on the growth of post-weaning juvenile abalone (6 - 20 mm shell length), Haliotis midae Linnaeus was investigated by means of a growth trial at a ... -
Novel zeolite Na-X synthesized from fly ash as a heterogeneous catalyst in biodiesel production
(Elsevier, 2012)Several studies have been carried out on the production of biodiesel using different heterogeneous catalysts but this study has been able to demonstrate the prospect of utilizing South African class F fly ash as a raw ... -
Experiences, challenges and lessons from rolling out a rural WiFi mesh network
(ACM, 2013)The DEV community knows that technology interventions involve consideration of social and environmental factors as much as technical ones. This is particularly true for the introduction of communications infrastructure in ... -
Socially aware software engineering for the developing world
(IIMC International Information Management Corporation, 2006)While the social effects of Information Technology (IT) have received much attention there is very little work on targeted methodologies to develop IT applications and content in a developing world environment. This paper ... -
Evaluating the relevance of the “Real Access” criteria as a framework for rural HCI research
(ACM, 2006)Developing ICT software that is useful and usable in a rural context poses many problems. One of the major difficulties is understanding the real needs of the target users and the constraints imposed by the rural environment. ... -
Deaf telephony: community-based co-design
(Wiley, 2011)The process of community-based co-design is one that explores various solution configurations in a multi-dimensional design space whose axes are the different dimensions of requirements and the various dimensions of designer ... -
A catalogue with keys to the non-geniculate coralline algae (Corallinales, Rhodophyta) of South Africa
(Elsevier, 2008)Non-geniculate coralline red algae are common in all of the world’s oceans, where they often occupy close to 100% of the primary rocky substratum. The South African rocky subtidal and intertidal habitats in particular, ... -
MUTI Telehealth
(2007)For four years we have been iteratively evolving MUTI, a rural telehealth system, for hospitals and clinics in a remote rural part of the Eastern Cape in South Africa (Chetty, 2005; Chetty et al., 2003, 2004a; Maunder et ... -
Mobile Communication Tools for a South African Deaf patient in a pharmacy context
(IIMC International Information Management Corporation, 2012)This paper presents a case for iterative community-based co-design to facilitate the emergence of an innovative mobile system to address a potentially life-threatening scenario for Deaf people in South Africa. For Deaf ... -
First report of Sporolithon ptychoides (Sporolithales, Corallinophycidae, Rhodophyta) for the Atlantic Ocean
(Wiley-Blackwell, 2011)Samples corresponding to Sporolithon ptychoides Heydrich were collected in the mesophotic zone (50 m depth) south of Espírito Santo State, Brazil. The collected material presented features characteristic of the species ...