Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 233-252 of 4825
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Anti-corrosive properties of 4-amino-3,5-bis(disubstituted)-1,2,4-triazole derivatives on mild steel corrosion in 2M H3PO4 solution: Experimental and theoretical studies
(Elsevier, 2016)The corrosion inhibitory effect of two 3,5-bis(disubstituted)-4-amino-1,2,4-triazole derivatives, namely 3,5-bis(4-tolyl)-4-amino-1,2,4-triazole (K1) and 3,5-bis(3,4-dimethoxyphenyl)-4-amino-1,2,4-triazole (K2), for mild ... -
Anti-epileptic prescribing patterns in the South African private health sector (2008-2013)
(Taylor & Francis, 2016)Background: Little is known about longitudinal prescribing practices for anti-epileptic drugs (AEDs) in South Africa. The prescribing patterns and associated direct medicine costs of AEDs in the private ... -
Antibiotic resistance, efflux pump genes and virulence determinants in Enterococcus spp. from surface water systems
(Springer, 2016)The aim of this study was to report on antibiotic susceptibility patterns as well as highlight the presence of efflux pump genes and virulence genetic determinants in Enterococcus spp. isolated from South African surface ... -
Antibiotic sensitivity patterns of bacterial pathogens associated with urinary tract infections in three general hospitals in Lagos, Nigeria
(Kamla-Raj, 2016)This study was carried out to identify the common bacterial pathogens associated with urinary tract infections and their susceptibility patterns to common antimicrobial agents. One hundred (100) clean catch midstream urine ... -
Anticancer activity, apoptosis and a structure-activity analysis of a series of 1,4-naphthoquinone-2,3-bis-sulfides
(Springer, 2020)We have previously reported on the synthesis of 1,4-naphthoquinone-sulfides and in this investigation we report on their anticancer activity against 6 human cancer cell lines to evaluate their cytostatic effects. The ... -
Anticoccidial effects of Khaya senegalensis aqueous stem bark extract on broiler chickens experimentally infected with Eimeria species
(Springer, 2020)Graded concentrations (200, 400 and 800 mg/kg) of the aqueous stem bark extract of Khaya senegalensis was evaluated for its therapeutic efficacy against experimentally induced coccidiosis in broiler chicken. The phytochemical ... -
Anticorrosion performance of three newly synthesized isatin derivatives on carbon steel in hydrochloric acid pickling environment: electrochemical, surface and theoretical studies
(Elsevier, 2017)In this work, three new isatin derivatives (5-BEI, 5-HEI and 5-FEI) were synthesized and their inhibition effect on carbon steel in hydrochloric acid medium has been evaluated. The detailed study of 5-BEI is given using ... -
Antidepressant exposure reduces body size, increases fecundity and alters social behavior in the short-lived killifish Nothobranchius furzeri
(Elsevier, 2020)Social and mating behavior are fundamental fitness determinants in fish. Although fish are increasingly exposed to pharmaceutical compounds that may alter expression of such behavior, potential effects are understudied. ... -
Antidiabetic effects of Aloe ferox and Aloe greatheadii var. davyana leaf gel extracts in a low-dose streptozotocin diabetes rat model
(ASSAf, 2011)The medicinal use and commercialisation of the plants Aloe ferox and Aloe greatheadii are primarily based on research done on Aloe vera and Aloe arborescens. Consequently, in this study we investigated the possible ... -
Antifungal efficacy of F10SC veterinary disinfectant against Batrachochytrium dendrobatidis
(Oxford Univ Press, 2018)The Infectious disease chytridiomycosis, which is caused by the fungal pathogen Batrachochytrium dendrobatidis, has been identified as one of the most important drivers of amphibian declines and extinction. In vitro B. ... -
Antimicrobial Activity of 1,3 Dihydroxyj–2–Methylimidazolium Bis (Trifluoromethylsulfonyl) Imde and Selected Antibiotics Against Streptococcus Species Isolated from Groundwater in the Northwest Province, South Africa
(Science and Education Publishing, 2014)In developing countries, access to unsafe water and inadequate sanitation continue to be a danger to human health and untreated groundwater constitutes one of the main sources of drinking water supply. The consumption of ... -
The antimicrobial peptide nisin Z induces selective toxicity and apoptotic cell death in cultured melanoma cells
(Elsevier, 2018)Reprogramming of cellular metabolism is now considered one of the hallmarks of cancer. Most malignant cells Reprogramming of cellular metabolism is now considered one of the hallmarks of cancer. Most malignant cells present ... -
Antioxidant and antimalarial properties of butein and homobutein based on their ability to chelate iron (II and III) cations: a DFT study in vacuo and in solution
(Springer, 2016)A theoretical study on the antioxidant and antimalarial properties of butein and homobutein has been performed by considering their Fe2+ and Fe3+ chelation ability. In order to elucidate the origin of the antioxidant and ... -
Antioxidant enzyme activity, proline accumulation, leaf area and cell membrane stability in water stressed Amaranthus leaves
(Elsevier, 2014)Traditional crops are extremely important for food production in low income, food-deficit countries (LIFDCs) where they continue to be maintained by socio-cultural preferences and traditional uses. Significant potential ... -
Antioxidant Properties of Kanakugiol Revealed Through the Hydrogen Atom Transfer, Electron Transfer and M2+ (M2+=Cu(II) or Co(II) Ion) Coordination Ability Mechanisms. A DFT Study In Vacuo and in Solution
(Springer Verlag, 2015)DFT studies on the conformational and antioxidant properties of kanakugiol were performed to investigate factors that contribute to its conformational preferences and to elucidate its antioxidant properties and mechanisms. ... -
Antioxidant properties, computational studies and corrosion inhibition potential of 3-hydroxy-1-(2-hydroxyphenyl)-5-(phenyl)-2,4-pentadien-1-one analogues
(Elsevier, 2016)Ten derivatives of (2Z,4E)-3-hydroxy-1-(2-hydroxyphenyl)-5-phenylpenta-2,4-dien-1-one were investigated for their antioxidant properties and corrosion inhibition potential. The compounds were screened for their antioxidant ... -
Aphelenchoides spp. (Nematoda: Aphelenchida) and Panagrolaimus leperisini (Nematoda: Rhabditida) found associated with grass seeds in the Telperion Nature Reserve, South Africa
(Magnolia Press, 2018)As part of the South African Plant-Parasitic Nematode Survey (SAPPNS), an extensive nematode diversity survey was conducted in the Telperion Nature Reserve, Mpumalanga, South Africa. During this survey, samples of grass ... -
Apocynaceae (Asclepiadoideae Ceropegieae) – First records of Orbea Cooperi in Gauteng and Mpumalanga Provinces, Fsa region
(South African National Botanical Institute, 2011) -
Apparent kleptoparasitism in fish: parasitic gnathiid isopods
(Springer, 2019)Gnathiid isopods are common external parasites/micropredators that feed on the blood of marine fishes. During the course of processing samples of gnathiid isopods collected from light traps in the central Philippines, we ...