Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 229-248 of 4825
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Ant assemblages at three potential breeding sites for the Brenton blue butterfly, Orachrysops
(The Entomological Society of Southern Africa, 2008) -
Anthelmintic potency of Rumex crispus L. extracts against Caenorhabditis elegans and non-targeted identification of the bioactive compounds
(Elsevier, 2021)Traditional healers and ethnoveterinary therapists use several medicinal plants, such as Rumex crispus L., to treat endoparasite infections. R. crispus has been established by researchers to be effective agasint a few ... -
Anthropogenic and naturally produced brominated phenols in pet blood and pet food in Japan
(ACS, 2017)Present study determined concentrations and residue patterns of bromophenols (BPhs) in whole blood samples of pet cats and pet dogs collected from veterinary hospitals in Japan. BPhs concentrations were higher in cat blood ... -
The anthropogenic contribution to atmospheric black carbon concentrations in southern Africa: a WRF-Chem modeling study
(EGU, 2015)South Africa has one of the largest industrialized economies in Africa. Emissions of air pollutants are particularly high in the Johannesburg-Pretoria metropolitan area, the Mpumalanga Highveld and the Vaal Triangle, ... -
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. ...