Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 82-101 of 4825
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The Accounting concept of measurement and the thin line between representational measurement theory and the classical theory of measurement.
(Clute Institute [for academic research], 2011)The purpose of this study is to discuss a possible way forward in accounting measurement. It also highlights the importance of understanding the lack of appreciation given by the accounting researchers to the distinction ... -
Accumulation of heavy metals and metalloid in foodstuffs from agricultural soils around Tarkwa area in Ghana, and associated human health risks
(MDPI, 2015)This study was carried out to assess the extent of heavy metals and metalloid accumulation from agricultural soils to foodstuffs (viz, M. esculenta (cassava) and Musa paradisiaca (plantain)) around thirteen neighboring ... -
Accumulation of persistent organic pollutants in consumers of eel from polluted rivers compared to marketable eel
(Elsevier, 2016)Globally, many river sediments are seriously contaminated with persistent organic pollutants (POPs) known to accumulate in aquatic food. In the Netherlands, toxicological risks of human exposure to dioxins and dioxin-like ... -
Accumulation patterns and risk assessment of metals and metalloid in muscle and offal of free-range chickens, cattle and goat in Benin City, Nigeria
(Elsevier, 2018)The use of free range animals for monitoring environmental health offers opportunities to detect exposure and assess the toxicological effects of pollutants in terrestrial ecosystems. Potential human health risk of dietary ... -
Accumulation properties of inorganic mercury and organic mercuryin the red-crownedcrane Grus japonensis in east Hokkaido, Japan
(Elsevier, 2015)The red-crowned (Japanese) crane Grus japonensis is native to east Hokkaido, Japan, in contrast to the East Asia mainland. Previously, we reported that red-crowned cranes in Hokkaido were highly contaminated with mercury ... -
Accuracy of molecular diagnostic methods for the detection of bovine brucellosis : a systematic review and meta-analysis
(Veterinary World, 2022)Background and Aim: Bovine brucellosis is a disease of global socio-economic importance caused by Brucella abortus. Diagnosis is mainly based on bacterial culture and serology. However, these methods often lack sensitivity ... -
The accuracy of predicting in vitro ruminal organic matter digestibility from chemical components of tropical pastures varies with season and harvesting method
(Tropical Agriculture, 2014)Numerous in vitro ruminal fermentation techniques have been developed to estimate forage digestibility. However, these methods are costly, time consuming, and require access to fistulated animals. This study aims to develop ... -
Accuracy of two optical chlorophyll meters in predicting chemicalcomposition and in vitro ruminal organic matter degradability of Brachiaria hybrid, Megathyrsus maximus, and Paspalum
(Elsevier, 2017)The objective of this study was to determine the accuracy and reliability of 2 optical chlorophyll meters: FieldScout CM 1,000 NDVI and Yara N-Tester, in predicting neutral detergent fibre (NDF), acid detergent fibre (ADF), ... -
Achievements and challenges (Nematology in South Africa: a view from the 21st century)
(Springer, 2017)This chapter highlights the core achievements within the science of Nematology in South Africa since 1982. In addition, the editors have attempted to highlight for the benefit of future decision makers and researchers, the ... -
Achieving the efficiency frontier in IT service delivery
(IBIMA, 2010)This paper researches and implements the best practices that lead to best performance in Information Technology service delivery. A customer quality defined standard is created by benchmarking the Information Technology ... -
Actinellopsis murphyi gen. et spec. nov.: a new small celled freshwater diatom (Bacillariophyta, Eunotiales) from Zambia
(Magnolia Press, 2014)In this paper we describe Actinellopsis murphyi gen. et spec. nov. a small heteropolar and dorsiventral diatom from a seep habitat in Zambia. This novel taxon has the chief distinguishing characteristic, along with its ... -
Activity coefficients at infinite dilution of hydrocarbons in glycols: experimental data and thermodynamic modeling with the GCA-EoS
(Elsevier, 2017)The infinite dilution activity coefficients for 12 non-polar hydrocarbon solutes in the solvents, monoethylene and diethylene glycol, were measured using the gas-liquid chromatography technique. Pre-saturation of the carrier ... -
Acute and chronic effects of acidic pH on four subtropical frog species
(Water Research Commission, 2016)Acidic precipitation is implicated as a possible cause of global amphibian decline. Even protected areas such as Kruger National Park receive acid rain which may lead to possible negative effects on the park’s natural ... -
Acute changes in haematocrit leading to polycythaemia in late-onset hypogonadism patients that receive testosterone replacement therapy: a South African study
(Taylor & Francis, 2019)Background: According to the literature, parenteral testosterone replacement therapy (TRT)-induced polycythaemia is associated with cardiovascular events. No or minimal data exist for the prevalence of TRT-induced ... -
Acute exposure to environmentally relevant lead levels induces oxidative stress and neurobehavioral alterations in larval zebrafish (Danio rerio)
(Elsevier, 2020)The ubiquitous contamination of environmental lead (Pb) remains a worldwide threat. Improper Pb mine waste disposal from an abandoned lead-zinc mine has recently unearthed widespread Pb poisoning in children in Kabwe Zambia. ... -
Acute toxicity of double-walled carbon nanotubes to three aquatic organisms
(Hindawi Publishing Corporation, 2015)This study investigated the toxicity of double walled carbon nanotubes (DWCNTs) to three aquatic organisms, namely, Pseudokirchneriella subcapitata, Daphnia pulex, and Poecilia reticulata under the influence of exposure ... -
Adaptation to damaging dance and repeated-sprint activity in women
(Wolters Kluwer, 2016)he repeated bout effect (RBE) refers to the prophylactic effect from damaging exercise after a single previous bout of exercise. There is a paucity of data examining the RBE in women, and investigations using exercise ... -
Adaptations in corticospinal excitability and inhibition are not spatially confined to the agonist muscle following strength training
(Springer, 2017)Purpose We used transcranial magnetic stimulation (TMS) to determine the corticospinal responses from an agonist and synergist muscle following strength training of the right elbow flexors. Methods Motor-evoked potentials ... -
Adapting mobile medical information search to low-resourced areas
(IST-Africa, 2013)Providing good medical care in low-resourced areas is a challenge faced by many low and middle income countries. Continuously improving mobile communication infrastructure in these areas is however providing the opportunity ... -
Adapting the Macaulay duration for defaultable and option-embedded bonds
(Faculty of Economic and Management Sciences, University of Pretoria., 2008)Most contemporary bonds have embedded options and all face the possibility of default. Both features introduce risk (the former market risk and the latter credit risk) by altering the quantity and timing of the promised ...