Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 1702-1721 of 4825
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Exploring the role of sugarcane in small-scale farmers' livelihoods in the Noodsberg area, Kwazulu-Natal, South Africa
(SciELO, 2014)Participatory, mixed-methods research was conducted to study the role of sugarcane in small-scale sugarcane farmers' livelihoods in the Noodsberg area, KwaZulu-Natal. Thirty-five farmers were visited at their homes and ... -
Exploring the use of experiential learning in promoting the integration of disaster risk reduction into primary school curriculum: a case of Botswana
(AOSIS, 2019)A key imperative of Botswana’s adherence to international, regional and local policy on disaster risk reduction (DRR) relates to creating awareness and an understanding of disaster risk. One avenue of creating an understanding ... -
Exploring theoretical trends in placemaking: towards new perspectives in spatial planning
(Emerald, 2018)Purpose – While placemaking is a multi-disciplinary concern, it is a key focus within the discipline of spatial planning. This paper aims to explore the development of theoretical trends with regard to placemaking in ... -
Exposure to high levels of fumarate and succinate leads to apoptotic cytotoxicity and altered global DNA methylation profiles in vitro
(Elsevier, 2017)In the Krebs cycle, succinate is oxidized to fumarate by succinate dehydrogenase (SDH), followed by the conversion of fumarate to malate by fumarate hydratase (FH). In cells with defective SDH and FH, the Krebs cycle is ... -
Exposures of children to neonicotinoids in pine wilt disease control areas
(Wiley, 2019)Neonicotinoid insecticides that have been on the market since 1992 have been used globally including in Japan. Because they are sprayed over forests and agricultural areas, inadvertent toxicity in nontarget insects (especially ... -
The extended flare in CTA 102 in 2016 and 2017 within a hadronic model through cloud ablation by the relativistic jet
(IOP Publishing, 2019)The flat-spectrum radio quasar CTA 102 (redshift 1.037) exhibited a tremendously bright four-month-long outburst from late 2016 to early 2017. In a previous paper, we interpreted the event as the ablation of a gas cloud ... -
The extended jet in AP Librae as the source of the VHE γ-ray emission
(AIP, 2017)Most modeling attempts of blazars use a small emission zone located close to the central black hole in order to explain the broad-band spectral energy distribution. Here we present a case where additionally to the small ... -
The extended occurrence of Maputaland Woody Grassland further south in KwaZulu-Natal, South Africa
(South African National Biodiversity Institute, 2011) -
Extended stochastic volatility models incorporating realised measures
(Elsevier, 2014)Extended stochastic volatility models are studied which use the daily returns as well as the volatility information in intraday price data summarised in terms of a number of realised measures. These extended models treat ... -
Extended TQFTs via generators and relations I: The extended toric code
(World Scientific Publishing, 2020)In his PhD thesis [G. Goosen, Oriented 123-tqfts via string-nets and state-sums, PhD thesis, Stellenbosch University, Stellenbosch (2018)], Goosen combined the string-net and the generators-and-relations formalisms for ... -
Extended VHE γ-ray emission towards SGR1806-20, LBV 1806-20, and stellar cluster Cl 1806-20
(EDP Sciences, 2018)Using the High Energy Spectroscopic System (H.E.S.S.) telescopes we have discovered a steady and extended very high-energy (VHE) γ-ray source towards the luminous blue variable candidate LBV 1806−20, massive stellar cluster ... -
Extending risk budgeting for market regimes and quantile factor models
(Infopro Digital Risk, 2018)We combine several disparate avenues in the literature to create a novel, unified risk- based optimization framework. Specifically, we extend an existing risk-budgeting approach to allow for changing market regimes and ... -
Extension of projection mappings
(Taylor & Francis, 2020)We provide sufficient conditions for a map between projection lattices of semi-finite von Neumann algebras to be extended to a Jordan *-homomorphism. These conditions are sufficiently general for the procedures developed herein ... -
Extensive broadband X-ray monitoring during the formation of a giant radio jet base in Cyg X-3 with AstroSat
(IOP Publishing, 2018)We present X-ray spectral and timing behavior of Cyg X-3 as observed by AstroSat during the onset of a giant radio flare on 2017 April 1–2. Within a timescale of a few hours, the source shows a transition from the hypersoft ... -
The extent and status of environmental management frameworks (EMFs) in South Africa, 2006-2015
(Taylor & Francis, 2017)An environmental management framework (EMF) is a uniquely South African environmental management tool legislated since 2006. Although the tool has been widely applied there has been no empirical research on the overall ... -
External contextual factors in information security behaviour
(SITEPRESS, 2020)Human behaviour is often considered to be irrational, difficult to understand, and challenging to manage. This phenomenon has a direct impact on the way in which humans behave when confronted with information security ... -
Extracting the February 1956 ground level enhancement event from legacy cosmic ray recordings
(Springer, 2018)Early continuous recordings of cosmic rays, as measured with Carnegie Type C Ionization Chambers, were made on rolls of photographic paper. This paper describes the extraction of the ionization data of the February 1956 ... -
Extracting the ground level enhancement event of February 1956 from Legacy cosmic ray recordings
(IEEE, 2018)Early continuous recordings of cosmic rays, as measured with Carnegie Type C Ionization Chambers, were made on rolls of photographic paper. This paper describes the extraction of the ionization data of a ground level ... -
Extraction of molasses from sugar crystals in a centrifuge
(Taylor & Francis, 2014)Massecuite is a mixture of sugar crystals and molasses produced during the manufacture of sugar. A centrifuge, which is a rotating cylindrical basket, is used to separate the sugar crystals from the molasses. Water and ... -
Extraction of uranium from synthetic nuclear conversion plant waste
(Taylor & Francis, 2019)The nuclear conversion plant operated at Necsa in the past resulted in the formation of a large amount of waste material containing ~ 50% U, which has reuse potential if the recovery thereof can be achieved. The waste ...