https://commons.ufh.ac.za/vital/access/manager/Index ${session.getAttribute("locale")} 5 https://commons.ufh.ac.za/vital/access/manager/Repository/vital:57048 Wed 28 Sep 2022 15:33:47 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:64491 Wed 24 May 2023 12:02:01 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:55287 Wed 24 Aug 2022 10:28:55 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:47185 Wed 23 Feb 2022 16:43:56 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:64946 Wed 14 Jun 2023 11:19:20 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45650 Wed 12 Jan 2022 16:01:56 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:58278 Wed 09 Nov 2022 12:18:08 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:62339 Wed 08 Mar 2023 14:43:59 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:62334 Wed 08 Mar 2023 14:22:59 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:62312 Wed 08 Mar 2023 10:14:36 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:62301 Wed 08 Mar 2023 09:19:33 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:65520 Wed 05 Jul 2023 12:46:28 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:63891 Wed 03 May 2023 10:26:12 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:51710 Wed 01 Jun 2022 15:17:25 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:43250 Tue 28 Sep 2021 15:37:01 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:63051 Tue 28 Mar 2023 16:29:50 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:61068 Tue 24 Jan 2023 15:44:58 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45347 0.05 evaluated for potential toxicity were categorised as toxic, but Albizia amara, Datura stramonium and Ricinus communis were categorised as having medium toxicity levels, nine species as having low toxicity levels while 13 species were categorised as non-toxic. This study provides valuable insights into the use of medicinal plants used by women during pregnancy, labour, delivery and post-delivery in Makoni District, Zimbabwe. Medicinal plants play an integral role in the provision of basic health care in Zimbabwe. However, the brine shrimp lethality test results categorised some of the prescribed species such as Albizia amara, Datura stramonium and Ricinus communis as having medium levels of toxicity and this is a cause of concern regarding utilization of TMPs during pregnancy. Therefore, TMPs used during pregnancy should be subjected to detailed phytochemical, pharmacological and toxicological experiments aimed at identifying some of the potential toxic compounds and side effects associated with intake of TMPs and associated herbal products.]]> Tue 23 Nov 2021 12:59:54 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:64479 Tue 23 May 2023 11:03:51 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:64475 Tue 23 May 2023 10:26:25 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:48629 Tue 22 Mar 2022 10:49:43 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:57354 Tue 18 Oct 2022 09:36:09 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:65848 Tue 18 Jul 2023 10:29:27 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:65847 Tue 18 Jul 2023 10:05:21 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:63576 Tue 18 Apr 2023 16:46:40 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:63573 Tue 18 Apr 2023 16:29:51 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:63548 Tue 18 Apr 2023 09:42:01 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:64279 0.05) difference in biomass between frequently selected and less selected patches. The present situation in which communal areas support large livestock populations under continuous grazing is due to the fact that cattle would adjust to changes in forage availability by seeking higher biomass patches in times of forage scarcity as observed in Magwiji. At the coastal forest thornveld of Mnyameni the Canonical Correspondence Analysis (CCA) showed that the first axis was significantly correlated with soil organic carbon (r = -1, p < 0.05). Furthermore, the species that were significantly correlated with the first axis were Cynodon dactylon and Pennisetum clandestinum. These species were mainly found in sites that were preferred in April and June. At the sourveld of Upper Mnxe the first axis was significantly correlated with soil pH (r = 0.9, p < 0.05). At this rangeland, sites selected in June were associated with alkaline soils; characterized by a history of human settlement and dominated by Eragrostis superba and Heteropogon contortus. Soil electrical conductivity (EC) separated species (r = 0.9; p < 0.05) along the first axis at Magwiji, with mountain top sites selected in April and June having low EC and dominated by Digitaria eriantha, Eragrostis superba and Andropogon appendiculatus. Rangeland heterogeneity is caused by various factors, ranging from human disturbance to topography. These factors have an effect on the soil properties, and therefore, vegetation and thus lead to the observed heterogeneity which shapes the utilization patterns of these rangelands, and hence their continued support of large populations of livestock. To understand the effects of seasonal and spatial variation in resource use pattern and implications on range management, differences in cattle activity patterns in relation to veld type, season, daytime, management type (kraaling) and forage quality were examined. Seasonal activity patterns were only significant at Upper Mnxe (p < 0.05), with percent of time spent grazing (77 percent), resting (35 percent) and walking (24 percent) being higher in April, November and June respectively.]]> Tue 16 May 2023 11:15:04 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:43197 10 mg mL-1. The antioxidant and free-radical scavenging activity of the obtained oils and extracts were tested by means of 1,1-diphenyl-2-picrylhydrazyl radical (DPPH+) assay, [(2,2ˊ-azino bis-(3-ethylbenzothiazoline-6-sulfonic acid)] (ABTS), nitric oxide and ferric reducing power assays. The oils and extracts showed DPPH radical scavenging ability, but not as high as the standard drugs. The base extract showed a higher reducing power than the standard drug, rutin. There were significant differences in the phytochemicals contents of the various leaf extracts. The acetone extract has the highest flavonol, proanthocyanidin, and alkaloid contents. The ethanol extract showed the highest amount of phenolic content with the acid extract, having the least. Thin layer chromatography (TLC) and column chromatography was employed to obtain different fractions of extracts using four eluent solvent systems of varying polarities: toluene, petroleum ether, hexane and ethyl acetate and sprayed with anisaldehyde. A single, visible spot of B-fraction was developed, collected and analyzed as 1-methyl-2,4,5- trinitroimidazole with renown valuable properties.]]> Tue 15 Jun 2021 15:58:29 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:65680 Tue 11 Jul 2023 10:12:04 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45640 Tue 11 Jan 2022 12:45:31 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45637 Tue 11 Jan 2022 11:14:29 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:63388 Tue 11 Apr 2023 14:56:14 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:63385 Tue 11 Apr 2023 14:23:13 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:44486 Tue 09 May 2023 12:17:47 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:58229 Tue 08 Nov 2022 11:11:01 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:43132 Tue 08 Jun 2021 10:20:15 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:43131 Tue 07 May 2024 14:06:40 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:43254 Tue 07 May 2024 10:34:07 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:63067 Tue 07 May 2024 10:13:58 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:43257 Tue 07 May 2024 08:55:42 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:43139 Tue 07 May 2024 08:41:04 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:43058 Tue 07 May 2024 08:34:22 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:43032 Tue 07 May 2024 08:27:30 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:62299 Tue 07 Mar 2023 15:21:16 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:65471 Tue 04 Jul 2023 11:14:58 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:47436 Tue 01 Mar 2022 10:46:37 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:44949 Thu 28 Oct 2021 15:58:19 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:55325 Thu 25 Aug 2022 14:30:38 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:55380 Thu 25 Aug 2022 12:59:38 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:63670 Thu 20 Apr 2023 13:05:23 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:63665 Thu 20 Apr 2023 12:23:53 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:64335 Thu 18 May 2023 11:51:58 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:55001 Thu 18 Aug 2022 15:19:45 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:66696 Thu 17 Aug 2023 17:46:54 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:62638 Thu 16 Mar 2023 16:15:52 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:62624 Thu 16 Mar 2023 15:05:52 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:62596 Thu 16 Mar 2023 11:01:51 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45659 Thu 13 Jan 2022 14:58:37 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45657 Thu 13 Jan 2022 12:24:37 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45656 Thu 13 Jan 2022 10:53:37 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:64224 Thu 11 May 2023 11:49:50 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:62379 Thu 09 Mar 2023 10:24:03 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:51982 Thu 09 Jun 2022 13:03:36 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:63978 Thu 04 May 2023 09:59:09 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:51742 Thu 02 Jun 2022 16:29:32 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:51736 Thu 02 Jun 2022 10:46:05 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:67331 Sun 03 Sep 2023 16:12:58 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:47431 Mon 28 Feb 2022 16:30:28 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:47418 Mon 28 Feb 2022 15:45:00 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:65236 Mon 26 Jun 2023 22:39:16 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:65235 Mon 26 Jun 2023 22:16:53 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:63775 Mon 24 Apr 2023 16:00:32 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:63763 Mon 24 Apr 2023 15:12:39 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:64473 Mon 22 May 2023 16:23:06 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:63535 .05). Also, there is no significant main effect of treatment and gender on students’ academic achievement in algebra. (F (1.109) =.237; p>.05). However, this study recommended that problem based learning strategies should be embraced by both the teachers and learners in order to enhance students’ academic achievement in algebra.]]> Mon 17 Apr 2023 16:01:59 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:63529 Mon 17 Apr 2023 15:32:41 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:43171 Mon 14 Jun 2021 09:34:29 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:65660 Mon 10 Jul 2023 17:03:38 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:65656 Mon 10 Jul 2023 11:30:30 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:43119 Mon 07 Jun 2021 15:33:11 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:48857 Mon 06 May 2024 15:33:59 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:62245 Mon 06 Mar 2023 15:37:04 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:49336 Mon 04 Apr 2022 14:21:19 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:65338 Fri 30 Jun 2023 10:20:41 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:66010 Fri 28 Jul 2023 13:19:12 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:62812 Fri 24 Mar 2023 14:00:16 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:62804 Fri 24 Mar 2023 13:34:17 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:62767 Fri 24 Mar 2023 11:15:09 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:64346 Fri 19 May 2023 11:36:22 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:62662 Fri 17 Mar 2023 15:26:25 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:62645 Fri 17 Mar 2023 12:59:52 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:64249 100 μg/ml) while the LC50 for Z. mucronata subsp. mucronata equaled 90.27 µg/ml indicated a low level of toxicity. The effects of combining the crude extracts of these plants with eight antibiotics were investigated by means of checkerboard and agar diffusion methods. On using the methanol extract of A. mearnsii, the agar diffusion assay showed that extract-kanamycin combination had zones of inhibition ≥ 20 ± 1.0 mm in all the bacteria tested (100percent), followed by extract chloramphenicol (90percent) > extract-ciprofloxacin = extract-tetracycline (70percent) > extract amoxicillin (60percent) > extract-nalidixic acid (50percent) > extract-erythromycin (40percent) > extract metronidazole (20percent). The checkerboard showed synergistic interaction (61.25percent), additivity/indifference (23.75percent) and antagonistic (15percent) effects. I, therefore, concluded that the antibacterial potentials of the antibiotics were improved and combining natural products with antibiotic could be a potential source of resistance-modifying agents useful against multi-drug resistant bacteria. The influences of these extracts on the ultrastructures, elemental components, protein and lipid leakages of five different bacteria were determined as the possible mechanisms of action of the extracts investigated. The scanning electron microscopy indicated varied ultrastructural changes in the morphology of bacterial cells treated with the extracts. The X-ray microanalysis showed significant differences between the elemental contents of extract-treated and untreated bacteria while lipids and proteins were leaked to a great extent from the extract-treated bacterial strains in comparison with the untreated ones. The possible mechanisms of action of the extracts may include inhibition of a significant step in peptidoglycan assembly, inhibition of metabolic processes, disruption of cell wall and cell membranes resulting in the efflux of lipid and protein in all the bacteria tested. The possible mechanism of action involved in the lipid and protein leakages in the bacterial cells could be attributed to lipid peroxidation and protein oxidation owing to the antioxidant activities of the extracts that were active beyond the protective levels. I concluded that the morphological changes and the observed leakages showed rapid killing, significant membrane depolarization resulting in leakages and efflux of disintegrated cellular materials. In general, this study has justified the ethnotherapeutic importance of A. mearnsii and Z. mucronata subsp. mucronata in the treatment of microbial infections by indicating the possible mechanisms of action of the crude extracts on the tested bacteria.]]> Fri 12 May 2023 15:13:04 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:43147 Fri 11 Jun 2021 15:07:00 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:43152 Fri 11 Jun 2021 15:02:22 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:44454 Fri 10 Sep 2021 13:27:31 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:62445 Fri 10 Mar 2023 12:31:28 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:43386 Fri 09 Jul 2021 10:59:21 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45029 Fri 05 Nov 2021 12:59:43 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:52664 0.05) improve the effect of water restriction on body condition scores (BCs), FAMACHA©, glucose, globulin, alanine aminotransferase (ALT) and high-density lipoprotein (HDL). In the second objective, intake, nutrient digestibility, nitrogen and mineral balance were evaluated. The reduced nutrient intake was similar (P>0.05) irrespective of water restrictions and VC supplementations. Water-restriction levels did not affect nutrient intake/metabolic weight. Retained nitrogen increased with water-restriction levels but not influenced by VC. NH3-N decreased with the levels of water restriction while the pH was similar across the water restricted groups. Supplementation of VC had no effect (P>0.05) on apparent digestibility and digestible nutrients induced by water restriction levels. The amount of Ca, K, Mg retained increased (P<0.05) with water-restriction levels. In the third objective, stress indices, carcass characteristics and meat quality parameters were evaluated. The level of plasma cortisol concentration due to water stress was lessened (P<0.05) by VC. Follicle stimulating hormone (FSH), Luteinizing hormone (LH) and insulin were not affected (P>0.05) by levels of water restriction. The hot and carcass weights were lower (P<0.05) in W70+ and W50+ compared to W70 and W50 respectively. Vitamin C treated goats had higher redness (a*) compared to W70, W50 and W0. The shear force and cooking loss increased (P<0.05) with water restriction levels, while thaw loss, pH45min and pH24h were not affected by water restriction levels. In the final objective, the treatments did not affect (P>0.05) the oxidative stability of lipids (TBARS). The moisture and fat content in the water restricted groups were lower (P<0.05) than W0. The consumer meat sensory appearance decreased (P<0.05) with levels of water restrictions. Regardless of VC concentration and supplementation, vaccenic, and docosahexaenoic acid increased (P<0.05) while linolenic acid decreased as the water restriction levels increased. Nonetheless, treatment did not affect (P>0.05) the saturated and unsaturated fatty acids. These studies showed that suboptimal water intake negatively affects the growth performance and nutrient intake of Xhosa goats. However, the reduction in body weight loss and decreased plasma cortisol (chief stress hormone) concentration following vitamin C supplementation (especially at a daily single dose [3g/d]) may well reduce the effect of water stress in goats.]]> Fri 01 Jul 2022 13:18:00 SAST ]]>