Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 1077-1096 of 4825
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Detection, identification, and significance of phytoplasmas in wild grasses in East Africa
(APS, 2016)Plant-pathogenic phytoplasmas found in wild grasses in East Africa could pose a serious threat to the cultivation of Napier grass, Pennisetum purpureum, the most important livestock fodder in the region. To asses this ... -
Determinants of password security: some educational aspects
(Springer, 2013)Development and integration of technology give organisations the opportunity to be globally competitive. However, the potential misuse of Information Technology (IT) is a reality that has to be dealt with by management, ... -
Determinants of respirable quartz exposure in farming
(Taylor & Francis, 2018)The objectives of this article are to quantify personal respirable quartz exposure on sandy, sandy loam, and clay soil farms and to identify exposure determinants. The methods applied included observing and examining the ... -
Determinants of rural wome's livelihood in Ibarapa North Local Government Area of Oyo State, Nigeria
(Kamla-Raj, 2016)This study assessed the determinants of the sources of livelihood for rural women in Ibarapa North Local Government Area. 102 respondents were randomly selected using the multistage sampling technique while data was collected ... -
Determinants of solid fuel use and emission risks among households : insights from Limpopo, South Africa
(MDPI AG, 2022)Emissions from residential solid fuels reduce ambient air quality and cause indoor air pollution resulting in adverse human health. The traditional solid fuels used for cooking include coal, straws, dung, and wood, with ... -
Determinants of the perceptions of free Higher Education among students at a South African University
(The Social Sciences Research Society, 2016)The debate on the mode of financing of higher education is not a new one. For decades, there have been opposing views and conflicting efforts in as far as the financing of higher education is concerned. Most developed ... -
Determinants of visitor spending: an evaluation of participants and spectators at the Two Oceans Marathon
(IP Publishing, 2012)This paper investigates the socio-demographic and behavioural determinants that influence visitor expenditure at the Two Oceans Marathon in South Africa, based on a participant and spectator survey conducted at the race ... -
Determinants of vulnerability to food insecurity in a South African township: a gender analysis
(Mediterranean Center of Social and Educational Research (MCSER), 2013)The results of a study reported in this article comparatively analyse the gender determinants of vulnerability to food insecurity in a South African township of Kwakwatsi, South Africa. The results are based on a household ... -
Determination and Quantification of Aflatoxin M1 in fresh milk samples obtained in goats and cattle in selected rural areas of the Limpopo Province, South Africa
(Kamla-Raj, 2016)In this study, the Enzyme Linked Immuno-sorbent Assay (ELISA) was used to detect aflatoxin M1(AFM1) detection in 118 milk samples from subsistence farms in selected rural areas in the Limpopo Province, South Africa. This ... -
Determination and the no-free-lunch paradox
(MIT Press, 2011)We discuss the no-free-lunch NFL theorem for supervised learning as a logical paradox—that is, as a counterintuitive result that is correctly proven from apparently incontestable assumptions. We show that the uniform prior ... -
Determination of a safe distance for atomic hydrogen depositions in hot-wire chemical vapour deposition by means of CFD heat transfer simulations
(Tech Science Press, 2020)A heat transfer study was conducted, in the framework of Computational Fluid Dynamics (CFD), on a Hot-Wire Chemical Vapour Deposition (HWCVD) reactor chamber to determine a safe deposition distance for atomic hydrogen ... -
Determination of Corrosion Inhibition Efficiency Using HPHT Autoclave by Gingko biloba on Carbon Steels in 3.5% NaCl solution Saturated with CO2
(ESG, 2014)Leaves extract of Gingko biloba (GBE) was characterized using mass spectrometry (MS) and Fourier transform infrared spectroscopy (FTIR) methods. The influence of GBE on corrosion of carbon steels (J55,N80, P110SS and C110 ... -
Determination of factors that influence reproductive conditions in cows in the rural farms of the Ngaka Modiri Molema District of the North West Province
(Kamla-Raj, 2016)Reproductive disorders in communal farming remain answerable to economic losses and poor reproductive performance. The aim of this study was to identify factors that influence the prevalence of reproductive conditions in ... -
Determination of mineral matter and elemental composition of individual macerals in coals from Highveld mines
(SAIMM, 2016)A number of conventional and advanced analytical techniques (proximate and ultimate analysis, low-temperature oxygen-plasma ashing, X-ray diffraction, X-ray fluorescence spectrometry, coal petrography, and light-element ... -
Determination of the whole-genome consensus sequence of the prototype DS-1 rotavirus using sequence-independent genome amplification and 454® pyrosequencing
(Elsevier, 2011)The prototype DS-1 rotavirus strain, is characterised by a short electropherotype and G2P[4] serotype specificity. Following sequence-independent genome amplification and 454® pyrosequencing of genomic cDNA, differences ... -
Determining pitch-angle diffusion coefficients from test particle simulations
(IOP Publishing, 2016)The transport and acceleration of charged particles in turbulent media are topics of great interest in space physics and interstellar astrophysics. These processes are dominated by the scattering of particles off magnetic ... -
Determining the baking isotherm temperature of Söderberg electrodes and associated structural changes
(Elsevier, 2013)One of the most commonly employed electrode systems in industrial metal smelting applications is continuous self-baking electrodes, i.e. the Söderberg electrode system. In this system, the temperature at which transition ... -
Determining the most suitable method of otolith preparation for estimating the age of tigerfish, hydrocynus vittatus in the Pongolapoort Dam, South Africa
(Zoological Society of Southern Africa [SU LIS], 2013)The growth, morphology and relative age estimates of the lapillus and asteriscus otoliths were studied to gain a better understanding of the development and ageing of tigerfish otoliths. Asteriscus and lapillus growth ... -
Determining the motivating factors for the general use of social media amongst tourists to South Africa
(The Social Sciences Research Society, 2016)The remarkable growth in information technology has led businesses to appreciate the power and potential of online marketing, rather than merely focussing their promotional activities and goals on production and sales. ... -
Determining the potential sites of neural adaptation to cross-education: implications for the cross-education of muscle strength
(Springer, 2018)Cross-education describes the strength gain in the opposite, untrained limb following a unilateral strength training program. Since its discovery in 1894, several studies now confirm the existence of cross-education in ...