Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 1148-1167 of 4825
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Dichlorodiphenyltrichloroethane (DDT) levels in rat livers collected from a malaria vector control region
(Japanese Society of Veterinary Science, 2019)Dichlorodiphenyltrichloroethane (DDT) is an organochlorine insecticide that has been used for indoor residual spraying for the control of mosquito-borne diseases including malaria. However, due to its toxicity and ... -
Did bank capital regulation exacerbate the subprime mortgage crisis?
(Hindawi, 2009)This contribution is the second in a series of papers on discrete-time modeling of bank capital regulation and its connection with the subprime mortgage crisis (SMC). The latter was caused by, amongst other things, the ... -
Did brightest cluster galaxies experience more than one star formation epoch?
(Cambridge University Press, 2012)We use the full spectrum fitting ability of ULySS, with the Pegase.HR stellar population model to fit the observed spectra of 40 brightest cluster galaxies in order to determine whether a single or a composite stellar ... -
Die gebruik van die Suid–Afrikaanse Diatoomindeks as hulpmiddel vir bewaringsbestuur van Hewitt se spookpadda
(AOSIS, 2012)Distribution patterns of diatoms were investigated to determine the impact of shading on the distribution of diatomes, which form the main diet of the endangered frog species, Heleophryne hewitti. No differences were ... -
Die identifisering van fenielbottersuur aromatiese metaboliete in die urien van die blou-aap
(Suid-Afrikaanse Akademie vir Wetenskap en Kuns, 2018)Phenylbutyrate (PBA) is used as treatment of urea cycle disorders and as an alternative treatment option for adrenoleykodystrophy, has neuroprotective effects and provides protection against oxidative stress. Known ... -
Die invloed van gesondheidsopvoeding op die prevalensie van skistosoombesmettings by leerders in 'n skistosoomendemiese gebied in die Limpopoprovinsie
(Die Suid-Afrikaanse Akademie vir Wetenskap en Kuns, 2008) -
Die kars-ekologie van die Bakwenagrot (Gauteng)
(AOSIS, 2012)The Bakwena Cave houses a variety of organisms that form an intricate and interdependent food web. This cave is utilised as a permanent roost by a colony of Natal clinging bats. The bat guano and allochthonous plant material ... -
Die klassifikasie van 'n sianoprokarioot deur van ligmikroskopie, transmissie elektronmikroskopie en molekul?re tegnieke gebruik te maak
(OpenJournals Publishing, 2009) -
Die persoonlike geloofsdaad van die nagmaalsgebruiker
(AOSIS, 1990)The act of personal faith of the Communicant The aim of this article is to determine the nature of the communicant’s act of faith in the Three Formulae of Unity. The main theses are: • Holy communion is only instituted ... -
Die skoenlusmetode: 'n kritiese oorsig
(AOSIS, 2008)Sedert die ontstaan van die skoenlusmetodologie, het dit beide 'n kragtige versameling oplossings gebied vir die praktiese gebruiker van statistiek , sowel as 'n ryk bron van teoretiese en metodologiese oplossings vir ... -
Die toepaslikheid van deeltitelheffings in Suid-Afrika
(Sabinet, 2012)This study challenges the fairness of sectional title schemes' levies that are ordered by the Sectional Title Act (95 of 1986) to be allocated according to the participation quota (floor area) of units. Studies have shown ... -
Die toepaslikheid van deeltitelheffings in Suid–Afrika
(University of Johannesburg. Department of Finance and Investment Management, 2012)This study challenges the fairness of sectional title schemes’ levies that are ordered by the Sectional Title Act (95 of 1986) to be allocated according to the participation quota (floor area) of units. Studies have shown ... -
Die toepassing op en validering van ’n voorgestelde subnasionale kredietgraderingsmetodologie vir die Departement van Onderwys, met ’n gevallestudie
(LitNet, 2017)The development of subnational credit rating methodologies provides benefits for subnationals, the sovereign and its citizens. Trusted credit ratings facilitate access to financial markets, and superior ratings allow for ... -
Die verbond – van Ou Testament na Nuwe Testament
(AOSIS, 1983)Die verbondsbegrip het in die Ou Testamentiese wetenskap weer ’n plek gekry op grond van die werk van Eichrodt en die studie van ooreenkomste tussen die verbond in die Ou Testament en die buite-Bybelse staatsverdrae, sedert ... -
Die verspreiding en habitat van Chambardia wahlbergi en Chambardia petersi (Bivalvia: Iridinidae) in Suid–Afrika
(AOSIS, 2012)Based on the data in the database of the National Freshwater Snail Collection (NFSC), the distribution and habitat of Chambardia wahlbergi and Chambardia petersi, are presented and discussed. Although the distribution ... -
Die verspreiding en habitats van Burnupia mooiensis in Suid–Afrika: (Walker 1912 [Gastropoda: Ancylidae])
(AOSIS, 2016)Burnupia mooiensis is reeds in 1912 vanaf eksemplare uit die Mooirivier, Potchefstroom beskryf en die oudste monster is in 1956 in die Nasionale Varswaterslakversameling (NVWSV) opgeneem. Op die oomblik is daar 14 spesies ... -
Diel movement of smallmouth yellowfish Labeobarbus aeneus in the Vaal River, South Africa
(Taylor & Francis, 2016)Diel movements of Orange–Vaal smallmouth yellowfish Labeobarbus aeneus (Burchell, 1822) in the Vaal River, South Africa, were determined by externally attaching radio transmitters to 11 adult fish and manually tracking ... -
A diet expert system utilizing linear programming models in a rule-based inference engine
(ORLab Analytics, 2014)Linear programming is commonly used for solving complex problems in various fields, such as dietetics. Expert systems use expertise and inference procedures to solve problems that require advanced expert knowledge and are ... -
Dietary and thermo-hygrometric requirements to rear Mussidia fiorii Cecconi & de Joannis (Lepidoptera: Pyralidae) under laboratory conditions
(Entomological Society of Southern Africa, 2011)Several Mussidia species occur in West and East Africa, but only the ear-borer, Mussidia nigrivenella Ragonot (Lepidoptera: Pyralidae), has attained economic pest status in West Africa. During recent surveys in Kenya several ...