Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 660-679 of 4825
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Clifford-Fischer theory applied to a group of the form 2_1+6:((31+2:8):2)
(Iranian Mathematical Society (IMS), 2017)In our paper [A. B. M. Basheer and J. Moori, On a group of the form 210:(U5(2):2)] we calculated the inertia factors, Fischer matrices and the ordinary character table of the split extension 210:(U5(2):2) by ... -
Climate and air quality trade-offs in altering ship fuel sulfur content
(EGU, 2013)Aerosol particles from shipping emissions both cool the climate and cause adverse health effects. The cooling effect is, however, declining because of shipping emission controls aiming to improve air quality. We used an ... -
Climate and food resources shape species richness and trophic interactions of cavity‐nesting Hymenoptera
(Wiley, 2020)Aim: Temperature, food resources and top-down regulation by antagonists are considered as major drivers of insect diversity, but their relative importance is poorly understood. Here, we used cavity-nesting communities of ... -
Climate change adaptation and disaster risk reduction integration: strategies, policies, and plans in three Australian local governments
(Elsevier, 2017)Climate Change Adaptation (CCA) and Disaster Risk Reduction (DRR) integration is a pressing concern for Australia. Normative instruments such as Strategies, Policies, and Plans are among the principal ways that Local ... -
Climate change induced occupational stress and reported morbidity among cocoa farmers in South-Western Nigeria
(Institute of Agricultural Medicine, 2015)Introduction and objective: Climate change is one of the major development hurdles in many developing countries. The health outcome of farm households are related to climate change, which is related to several external and ... -
Climate change jeopardizes the persistence of freshwater zooplankton by reducing both habitat suitability and demographic resilience
(BioMed Central, 2018)Background: Higher temperatures and increased environmental variability under climate change could jeopardize the persistence of species. Organisms that rely on short windows of rainfall to complete their life-cycles, ... -
Climate change vulnerability index for South African aquifers
(South African Water Research Commission, 2012)South Africa is viewed as a water-stressed country with an average annual rainfall of 500 mm and any climatic change could have adverse impacts on water resources of the country. The potential impacts of climate change on ... -
Clinical validation of cutoff target ranges in newborn screening of metabolic disorders by tandem mass spectrometry: a worldwide collaborative project
(Springer Nature, 2011)Purpose: To achieve clinical validation of cutoff values for newborn screening by tandem mass spectrometry through a worldwide collaborative effort. Methods: Cumulative percentiles of amino acids and acylcarnitines in ... -
Clinical variability of isovaleric acidemia in a genetically homogeneous population
(Springer, 2012)Isovaleric acidemia (IVA) is one of the most common organic acidemias found in South Africa. Since 1983, a significant number of IVA cases have been identified in approximately 20,000 Caucasian patients screened for metabolic ... -
Clinically proven mtDNA mutations are not common in those with chronic fatigue syndrome
(BioMed Central, 2017)Background Chronic Fatigue Syndrome (CFS) is a prevalent debilitating condition that affects approximately 250,000 people in the UK. There is growing interest in the role of mitochondrial function and mitochondrial DNA ... -
Clonal expansion of early to mid-life mitochondrial DNA point mutations drives mitochondrial dysfunction during human ageing
(PLoS, 2014)Age-related decline in the integrity of mitochondria is an important contributor to the human ageing process. In a number of ageing stem cell populations, this decline in mitochondrial function is due to clonal expansion ... -
The close pair fraction of BCGs since z = 0.5: major mergers dominate recent BCG stellar mass growth
(Oxford Univ Press, 2017)Using the redMaPPer (red-sequence Matched-filter Probabilistic Percolation) cluster catalogue based on the Sloan Digital Sky Survey (SDSS) photometry, we investigate the importance of major mergers in the stellar mass ... -
Cloud ablation by a relativistic jet and the extended flare in CTA 102 in 2016 and 2017
(IOP, 2017)In late 2016 and early 2017, the flat spectrum radio quasar CTA 102 exhibited a very strong and long-lasting outburst. The event can be described by a roughly two-month long increase of the baseline flux in the monitored energy ... -
Clustering algorithms: sensitivity of mass determination using A 3581
(Wiley-VCH, 2013)In this paper we discuss various methods for clustering in order to determine estimates of the cluster mass, focusing on the cluster A3581. Using virtual observatory (VO) tools, possible galaxy cluster candidates are ... -
CNF-supported platinum electrocatalysts synthesized using plasma-assisted sputtering in pulse conditions for the application in a high-temperature PEM fuel cell
(ESG, 2016)Nanostructured platinum catalysts for a high-temperature proton-exchange membrane (PEM) fuel cell based on polybenzimidazole (PBI) doped by H3PO4 were synthesized by magnetron-ion sputtering of platinum on carbon nano-fibers ... -
Co-composting of cow dung, municipal solid waste, roadside pond sediment and tannery sludge: role of human hair
(Springer, 2017)In general, farmers from developing countries often use several feeding mixtures based on materials available in their vicinity resulting in a final poor-quality compost product. Human hair as a composting feed could impact ... -
Co-introduction of ancyrocephalid monogeneans on their invasive host, the largemouth bass, Micropterus salmoides (Lacepéde, 1802) in South Africa
(Elsevier, 2017)Largemouth bass, Micropterus salmoides (Lacepéde, 1802) were sampled from three provinces (Eastern Cape EC, North West NWP and KwaZulu-Natal KZN) in South Africa to assess for parasite diversity and community composition. ... -
Co-operatives as a development mechanism to support job creation and sustainable waste management in South Africa
(Springer, 2017)South Africa, as with most African countries, is facing the reality of limited economic growth, high levels of poverty and increasing unemployment. At the same time, waste generation is growing, especially in urban centres ... -
Co-sputtered PtxPdyAlz thin film electrocatalysts for the production of hydrogen via SO2(aq) electro-oxidation
(Springer, 2016)A co-sputtered PtxPdyAlz ternary system was investigated for potential use as anode catalyst for the electro-oxidation of aqueous sulphur dioxide (SO2), a key reaction in the hybrid sulphur (HyS) process for splitting water ... -
CO2 reactivity of briquettes derived from discard inertinite-rich Highveld coal using lignosulphonate and resin as binders
(SAIMM, 2019)South African collieries generate approximately 31 Mt of fine and ultrafine coal annually, with the majority of the ultrafine fraction discarded in slurry ponds and underground workings. Use can be made of this energy ...