Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 1392-1411 of 4818
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Effect of sodium compounds on the sintering propensity of coal-associated minerals
(Elsevier, 2015)This study focused on the chemistry involved in sintering of coal-associated minerals during combustion and inert conditions. Changes in mechanical strength were recorded with compressive strength measurements. This method ... -
Effect of some nitrogen donor ligands on the optical and structural properties of CdS nanoparticles
(RSC, 2013)The cadmium complex of N-ethyl-N-phenyl dithiocarbamate, 1, and its 2,20-bipyridine and 1,10-phenanthroline adducts, 2, and 3, respectively, have been used as single source precursors for the synthesis of CdS nanoparticles. ... -
The effect of sputtered Pt40Pd57Al3 thin film thickness on SO2(aq) electro-oxidation
(Springer, 2019)The influence of sputtered Pt40Pd57Al3 thin films of varying thickness, in the as-deposited (AD) and annealed (AN) state, was investigated for the electro-oxidation of aqueous SO2. From physical characterisation (scanning ... -
The effect of sputtered Pt40Pd57Al3 thin film thickness on SO2(aq) electro-oxidation
(Springer, 2019)The influence of sputtered Pt40Pd57Al3 thin films of varying thickness, in the as-deposited (AD) and annealed (AN) state, was investigated for the electro-oxidation of aqueous SO2. From physical characterisation (scanning ... -
The effect of sputtered Pt40Pd57Al3 thin film thickness on SO2(aq) electro-oxidation
(Springer, 2019)The influence of sputtered Pt40Pd57Al3 thin films of varying thickness, in the as-deposited (AD) and annealed (AN) state, was investigated for the electro-oxidation of aqueous SO2. From physical characterisation (scanning ... -
Effect of surface treatment on the bioactivity and electrochemical behavior of magnesium alloys in simulated body fluid
(Wiley, 2017)The effect of surface treatment using NaOH or H2O2 on the bioactivity and corrosion behavior of AZX310, AZ91D, AM50, and AZ31 Mg alloys in simulated body fluid (SBF) has been studied with the aid of surface morphological ... -
The effect of temperature and moisture on the amorphous-to-crystalline transformation of stavudine
(Elsevier, 2009)Stavudine is a nucleoside reverse transcriptase inhibitor active against HIV, and is known to exist in two polymorphic forms designated as forms I and II, and a hydrate form III. An amorphous solid of stavudine was ... -
Effect of temperature on density, sound velocity, and their derived properties for the binary systems glycerol with water or alcohols
(Elsevier, 2017)Densities and sound velocities of three binary systems containing glycerol + (water, methanol, or ethanol) have been measured over the entire composition range at temperatures ranging from (283.15 to 313.15) K in 10 K ... -
The effect of temperature on Nysius natalensis Evans (Hemiptera: Orsillidae) development and survival
(Entomological Society of Southern Africa, 2011)The false chinch bug, Nysius natalensis Evans (Hemiptera: Orsillidae), is a pest of sunflower, Helianthus annuus L. (Asteraceae), in South Africa. Pest outbreaks usually occur in localized areas towards the end of the ... -
The effect of temperature on resistance in african rice (Oryza glaberrima steud.) genotypes to the rice rootknot nematode Meloidogyne graminicola
(Organization of Nematologists of Tropical America, 2016)The rice root-knot nematode, Meloidogyne graminicola, has emerged as a serious soilborne pathogen of rice in most Asian countries. The host response of the M. graminicola-resistant African (Oryza glaberrima) rice genotypes ... -
The effect of temperature on the development and reproduction of Busseola fusca (Lepidoptera: Noctuidae)
(Cambridge Univ Press, 2017)The effect of temperature on the reproduction and development of Busseola fusca was studied under laboratory conditions. Single male–female pairs were confined to oviposition chambers kept at 15, 20, 26 and 30 ± 1°C and a ... -
Effect of temperature on the optical and structural properties of hexadecylamine capped ZnS nanoparticles using Zinc(II) N-ethyl-N-phenyldithiocarbamate as single source precursor
(Elsevier, 2012)Reported in this work is the synthesis of HDA (hexadecylamine)-capped ZnS nanoparticles by a single source route using Zinc(II) N-ethyl-N-phenyldithiocarbamate as a precursor. By varying the growth temperature, the ... -
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 ...