Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 1982-2001 of 4818
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Glycine conjugation: importance in metabolism, the role of glycine N-acyltransferase, and factors that influence interindividual variation
(Taylor & Francis, 2013)Introduction: Glycine conjugation of mitochondrial acyl-CoAs, catalyzed by glycine N-acyltransferase (GLYAT, E.C. 2.3.1.13), is an important metabolic pathway responsible for maintaining adequate levels of free coenzyme A ... -
A glycomics approach to discover novel renal biomarkers in birds by administration of cisplatin and diclofenac to chickens
(Oxford Univ Press, 2018)Avian species have a unique renal structure and abundant blood flow into the kidneys. Although many birds die due to nephrotoxicity caused by chemicals, there are no early biomarkers for renal lesions. Uric acid level in ... -
Gnathia aureamaculosa, a likely definitive host of Haemogregarina balistapi and potential vector for Haemogregarina bigemina between fishes of the Great Barrier Reef, Australia
(ELSEVIER, 2013)Investigations to determine whether juvenile gnathiid isopods are vectors of haemogregarines between coral reef fishes were undertaken at Lizard Island, Australia. Haemogregarina balistapi parasitaemias in triggerfish, ... -
Gnathia marleyi sp. nov. (Crustacea, Isopoda, Gnathiidae) from the Eastern Caribbean
(Magnolia Press, 2012)A new species of gnathiid was collected in June-August 2008 and 2009 from various sites in the Eastern Caribbean. Third stage pranizae taken from fish hosts were maintained in fresh sea water until their moult into males ... -
Gnathia masca sp. nov. (Crustacea, Isopoda, Gnathiidae) from Lizard Island, Great Barrier Reef, Australia
(Magnolia Press, 2012)Gnathia masca sp. nov. is described from material collected off Coconut Beach, Lizard Island, Great Barrier Reef, Aus-tralia. Males are characterised by a cephalosome with a shallow dorsal sulcus that stretches half its ... -
Goal line technology in soccer: are referees ready for technology in decision making
(LAM Publications; AJOL; Sabinet, 2013)The announcement that goal line technology will be used in the 2014 FIFA World Cup to be hosted by Brazil has sparked renewed interest and debate regarding its accuracy and reliability, its influence on the fluidity and ... -
Gold nanostar colorimetric detection of fructosyl valine as a potential future point of care biosensor candidate for glycated haemoglobin detection
(MDPI, 2019)Diabetes Mellitus is a growing global concern. The current methods used to detect glycated haemoglobin are precise, however, utilise expensive equipment, reagents and consumables. These are luxuries which rural communities ... -
Gomphocarpus glaucophyllus
(SANBI, 2017)The genus Gomphocarpus R.Br. is a relative small genus from the Apocynaceae (sub - family Asclepiadoideae) that is naturally found in mostly arid parts of eastern and southern Africa, extending into the Arabian ... -
Gomphonema grande sp. nov., a new diatom (Bacillariophyta) from the Democratic Republic of the Congo, Tropical Africa
(Magnolia Press, 2016)Gomphonema grande sp. nov. is described from a single sample collected from the Congo River Basin, Tropical Africa. The morphological features of the new species are described and documented through light microscopy and ... -
The good, the bad and the ugly of South African fatal road accidents
(ASSAf, 2018)We reflect on the good, the bad and the ugly of the fatal accidents occurring on South Africa’s roads. The cost of human lives indisputably equates to ‘the ugly’ and the economic cost of accidents associates with ‘the bad’. ... -
The good, the bad and the ugly: using videos to reverse systems analysis and design instruction
(IEEE, 2013)Systems Analysis and Design (SAD) is a second-year subject offered within the Information Technology (IT) course at the Vaal Triangle Campus of the North-West University in South Africa. The diverse environment of this ... -
Goodness-of-fit tests for multivariate stable distributions based on the empirical characteristic function
(Elsevier, 2015)We consider goodness-of-fit testing for multivariate stable distributions. The proposed test statistics exploit a characterizing property of the characteristic function of these distributions and are consistent under ... -
Goodness-of-fit tests for parametric specifications of conditionally heteroscedastic models
(Springer, 2020)We consider a goodness-of-fit test for certain parametrizations of conditionally heteroscedastic time series with unobserved components. Our test is quite general in that it can be employed to validate any given specification ... -
Goodness-of-fit tests for semiparametric and parametric hypotheses based on the probability weighted empirical characteristic function
(Springer, 2016)We investigate the finite-sample properties of certain procedures which employ the novel notion of the probability weighted empirical characteristic function. The procedures considered are: (1) Testing for symmetry in ... -
Goodness-of-fit tests in conditional duration models
(Springer, 2020)We propose specification tests for the innovation distribution in conditional duration models. The new tests are based either on the cumulative distribution function, or on exponential transforms such as the Laplace transform ... -
Goodness-of-fit tests in the Cox proportional hazards model
(Taylor & Francis, 2019)We consider a variety of tests for testing goodness-of-fit in a parametric Cox proportional hazards (PH) model and compare their performance. Aspects of the model under test include the baseline distribution and time-invariance ... -
Government funding framework for South African Higher Education Institutions
(Higher Education South Africa (HESA), 2015)Since the early 1950s, only four funding formulate have been used for public funding of higher education institutions in South Africa. From the introduction of the Holloway formula in 1953 to the current New Funding Framework ... -
Granulites, CO2 and graphite
(Elsevier, 2012)Externally derived, pure CO2 that mixes with a carbon-(under)saturated C-O-H-fluid in lower crustal granulites may result in graphite precipitation if the host-rock oxygen fugacity (fO2rock) is below the upper fO2 limit ... -
Graphs with sparsity order at most two: the complex case
(Taylor & Francis, 2017)The sparsity order of a (simple undirected) graph is the highest possible rank (over or ) of the extremal elements in the matrix cone that consists of positive semidefinite matrices with prescribed zeros on the positions ...