Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 1406-1425 of 4825
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The effect of temperature on the pH, d-lactate and haemocyanin oxygen affinity of Opistophthalmus latimanus (Koch) (Scorpionidae) heamolymph
(Entomological Society of Southern Africa, 2010) -
The effect of temperature on the respiration and metabolism of the African burrowing scorpion (Opistophthalmus latimanus)
(Elsevier, 2016)It is well known that scorpions are highly adapted to thermal temperatures. However, little is known of the metabolic and respiration adaptations caused by temperature fluctuations in these animals. Therefore we used ... -
The effect of ten years on the capacity component of the Water Poverty Index
(IBIMA, 2013)Water management has been carried out for many centuries wherever there has been a need to provide water to large numbers of people. Complex social norms have developed around water management and competing users have ... -
The effect of the adjuvant, Break-Thru S240, on whorl penetration and efficacy of foliar insecticide applications against Chilo partellus
(2009)Insecticide sprays registered for the control of maize stem borers are all intended for whorl application. Chemical control of these pests is complicated by their cryptic feeding habit inside plant whorls. The aim of this ... -
The effect of the Pheroid delivery system on the in vitro metabolism and in vivo pharmacokinetics of artemisone
(Taylor & Francis, 2014)Objectives: The objectives were to determine the pharmacokinetics (PK) of artemisone and artemisone formulated in the Pheroid® drug delivery system in primates and to establish whether the formulation affects the in vitro ... -
The effect of the roof and floor geological structures on the mineralogical composition of ash produced from coal at UCG operating temperatures
(International Pittsburgh Coal Conference, 2017) -
Effect of time of day on efficacy of sweep net sampling of arthropod predators in maize agro-ecosystems in the North West Province, South Africa
(BioOne, 2020)Various abiotic factors influence the biology and behaviour of arthropods, one of the most prominent abiotic factors is temperature. Thus, it is essential to know the optimal time of day during which sampling of target ... -
Effect of trifluoroacetate, a persistent degradation product of fluorinated hydrocarrbons, on Phaseolus vulgaris and Zea mays
(Elsevier, 2009)The aim of this study was to quantify the effect of the pollutant, trifluoroacetate (TFA), on growth and photosynthesis of Phaseolus vulgaris (C3) and Zea mays (C4) in order to elucidate the physiological and biochemical ... -
Effect of various carbon source, temperature and pH on nitrate reduction efficiency in mineral salt medium enriched with Bacillus weinstephnisis (DS45)
(Elsevier, 2017)The potential bacterial isolates which reduces nitrate using mineral salt medium (MSM) was studied through a batch mode process. Specific nitrate reducing bacteria were isolated from Dharmapuri district (Tamilnadu, India) ... -
Effect of vermicompost on soil and plant properties of coal spoil in the Lusatian Region (Eastern Germany)
(Taylor & Francis, 2011)This study was conducted to evaluate the effect of different wood vermicompost application rates on some soil physical and chemical properties as well as on growth parameters of a grass seed mixture (RSM 7.2.1) in tertiary ... -
Effect of water of crystallization on the dissolution efficiency of molten zinc chloride hydrate salts during the pre-treatment of corncob biomass
(Wiley, 2017)BACKGROUND Agro-wastes albeit abundant and cheap, require pre-treatment steps tailored to overcome the characteristic recalcitrance of lignocellulosic biomass. In this study, zinc chloride hydrate salts were studied for ... -
Effect of zinc on the production of phenolic acids and hypoxoside in micropropagated Hypoxis hemerocallidea
(Springer, 2019)The present study was conducted to investigate the effect of zinc (Zn) on the synthesis of secondary metabolites in micropropagated Hypoxis hemerocallidea. In vitro raised plantlets of H. hemerocallidea were exposed to ... -
The effect of α-irradiation from enriched uranium on the leaching properties of PTFE
(Elsevier, 2017)In the uranium enrichment plants of the South African Nuclear Energy Corporation SOC Ltd (Necsa), sintered polytetrafluoroethylene (PTFE) filters were used to remove gas entrained solid particles, in order to prevent ... -
Effective educator–student relationships in nursing education to strengthen nursing students’ resilience
(AOSIS, 2016)Background: Little research has been conducted in private nursing schools with regard to the educator–student relationship to strengthen the resilience of nursing students and to improve the educator–student relationship. ... -
Effective linkages and participatory governance in the management of veld fires
(The South African Society for Agricultural Extension (SASAE), 2009) -
The effectiveness of SDMS in the development of e-learning systems in South Africa
(2014)E-learning systems, or learning management systems, as it is known in the field, sit at the heart of educational systems and are used to systematically deliver on-line content and facilitate the learning experience around ... -
The effectiveness of state of the environment reporting (SoER) at the local government sphere - a developing country's experience
(Taylor & Francis, 2011)State of the environment reporting (SoER) is a well-established and widely applied environmental management tool in the South African context. Despite a wealth of knowledge about conducting and preparing SoERs, there is a ... -
Effectivity of phenol during solvent extraction of a South African bituminous coal under mild conditions
(ACS, 2017)Solvent extraction of a South African bituminous coal was carried out under mild conditions (<400 °C) with a holding time of 20 min and an initial nitrogen (N2) pressure of 6 MPa. Thermal degradation of coal with phenol ... -
Effects of acute high-intensity exercise on cognitive performance in trained individuals: a systematic review
(Elsevier, 2017)BACKGROUND: High-intensity exercise is generally considered to have detrimental effects on cognition. However, high fitness levels are suggested to alleviate this effect. OBJECTIVES: The specific objective of this review ... -
Effects of an antidepressant mixture on the brain serotonin and predation behavior of hybrid striped bass
(Wiley, 2016)Antidepressants have been found in measurable concentrations in final treated wastewater effluent and receiving waters throughout the world. Studies have shown that these concentrations are typically not overtly toxic, but ...