Faculty of Natural Sciences: Recent submissions
Now showing items 1701-1720 of 2642
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An interesting case of carbamazepine-induced Stevens–Johnson Syndrome
(Springer, 2018)A 29-year-old Black female patient was admitted to a psychiatric ward with symptoms of major depressive disorder with psychosis. The patient was started on amitriptyline 50 mg/day and haloperidol 10 mg/day. On day 4 ... -
Exome sequencing identifies novel dysferlin mutation in a family with pauci-symptomatic heterozygous carriers
(Springer Nature, 2018)Background: We investigated a South African family of admixed ancestry in which the first generation (G1) developed insidious progressive distal to proximal weakness in their twenties, while their offspring (G2) experienced ... -
SASOCP position statement on the pharmacist’s role in antibiotic stewardship 2018
(AOSIS Publishing, 2018)Antibiotics are the most commonly prescribed medicines in global healthcare practice today. Their effectiveness is crucial and often life-saving in humanity’s battle against pathogens and infectious diseases. Antibiotic/ ... -
Closure, interior and neighbourhood in a category
(Hacettepe University, 2018)The natural correspondences in topology between closure, interior and neighbourhood no longer hold in an abstract categorical setting where subobject lattices are not necessarily Boolean algebras. We analyse three ... -
Atmospheric bromoform at Cape Point, South Africa: an initial fixed-point data set on the African continent
(EGU, 2018)Bromoform mixing ratios in marine air were measured at Cape Point Global Atmospheric Watch Station, South Africa. This represents the first such bromoform data set recorded at this location. Manual daily measurements were ... -
A "site" for sore eyes
(South African Academy of Family Physicians, 2018)It is known that not all red eyes are caused by infections. Furthermore, not all eye infections will react to antibiotic eye drops. Most cases of conjunctivitis are due to viral causes, do not require antibiotic eye drops ... -
Cloning, expression and characterization of thermostable YdaP from Bacillus licheniformis 9A
(Acta Biochimica Polonica, 2017)The Bacillus licheniformis ydaP gene encodes for a pyruvate oxidase that catalyses the oxidative decarboxylation of pyruvate to acetate and CO2. The YdaP form of this enzyme was purified about 48.6-folds to homogeneity in ... -
Sputtered Si and Mg doped hydroxyapatite for biomedical applications
(IOP Publishing, 2018-01-30)Hydroxyapatite (HAP) coatings are applied on metallic implant materials to combine mechanical properties of metallic material with bioactivity abilities of HAP ceramic. In this study, HAP coatings with additions of Si ... -
Effect of Fe-Mo promoters on HZSM-5 zeolitecatalyst for 1-hexene aromatization
(Elsevier B.V., 2018-11-15)The promotional effect of Fe-Mo species introduced into HZSM-5 (Zeolyst Int.,SiO2/Al2O3 30) zeolite catalyst by the wetness impregnation method for the 1-hexene aromatiza-tion was investigated. The structure and catalytic ... -
A Two-Decade Anthropogenic and Biogenic Isoprene Emissions Study in a London Urban Background and a London Urban Traffic Site
(MDPI, 2018-10-03)A relationship between isoprene and 1,3-butadiene mixing ratios was established to separate the anthropogenic and biogenic fractions of the measured isoprene in London air in both urban background (Eltham) and urban ... -
New parameter-uniform discretisations of singularly perturbed Volterra integro-differential equations
(Natural Sciences Publishing, 2018)We design and analyse two numerical methods namely a fitted mesh and a fitted operator finite difference methods for solving singularly perturbed Volterra integro-differential equations. The fitted mesh method we propose ... -
Ecosystem engineering by hummock-building earthworms in seasonal wetlands of eastern South Africa: Insights into the mechanics of biomorphodynamic feedbacks in wetland ecosystems
(Wiley, 2018)This paper resolves the origin of clay hummock micro-topography in seasonal wetlands of the Drakensberg Foothills, providing a review and appraisal of previously-suggested mechanisms of hummock formation in the context ... -
Radon-222 measurements at Cape Point: A characterization of a 15-year time series
(National Association for Clean Air, 2018)The Cape Point (CPT) Global Atmosphere Watch (GAW) research station have been monitoring climatically significant trace gases for four decades. Among these is radon, a naturally occurring noble gas with a large continental ... -
Radiations and male fertility
(Springer Nature, 2018)During recent years, an increasing percentage of male infertility has to be attributed to an array of environmental, health and lifestyle factors. Male infertility is likely to be affected by the intense exposure to heat ... -
Investigation of excited 0+ states in 160Er populated via the (p, t) two-neutron transfer reaction
(EDP Sciences, 2018)Many efforts have been made in nuclear structure physics to interpret the nature of low-lying excited 0+ states in well-deformed rare-earth nuclei. However, one of the difficulties in resolving the nature of these states ... -
Human Leukocyte Antigen-A, B, C, DRB1, and DQB1 Allele and Haplotype Frequencies in a subset of 237 donors in the South African Bone Marrow Registry
(Hindawi, 2018)Human leukocyte antigen- (HLA-) A, HLA-B, HLA-C, HLA-DRB1, and HLA-DQB1 allele and haplotype frequencies were studied in a subset of 237 volunteer bone marrow donors registered at the South African Bone Marrow Registry ... -
Antioxidant and apoptosis-inhibition potential of Carpobrotus edulis in a model of parkinson’s disease
(African Association of Physiological Sciences, 2018)Background: Parkinson’s disease (PD) is a neurological disorder resulting from the progressive loss of dopaminergic neurons. There is currently no known cure for PD, thus the search for complementary and alternative medicines ... -
Factors influencing pigment production by halophilic bacteria and its effect on brine evaporation rates
(Wiley, 2018)The disposal of reject brine, a highly concentrated waste by-product generated by various industrial processes, represents a major economic and environmental challenge. The common practice in dealing with the large ... -
K21 compound, a potent antifungal agent: Implications for the treatment of fluconazole-resistant HIV-associated Candida species
(Frontiers, 2019-05-24)Background/objectives: With mucocutaneous candidiasis being highly prevalent in HIV patients, the emergence of fluconazole-resistant Candida species forms a major challenge in treating and eradicating these infections. The ... -
Mathematical analysis and numerical simulation of a tumor-host model with chemotherapy application
(Communications in Mathematical Biology and Neuroscience, 2018)In this paper, a system of non-linear quasi-parabolic partial differential system, modeling the chemotherapy application of spatial tumor-host interaction is considered. At some certain parameters, we derive the steady ...