https://commons.ufh.ac.za/vital/access/manager/Index en-us 5 https://commons.ufh.ac.za/vital/access/manager/Repository/vital:38920 Wed 13 Mar 2024 11:22:14 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:36232 Wed 13 Mar 2024 09:30:38 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:36580 Wed 13 Mar 2024 09:30:27 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:30568 Wed 12 Oct 2022 12:01:14 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:36591 Wed 12 Oct 2022 11:52:01 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:35349 Wed 12 May 2021 23:57:15 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:36483 Wed 12 May 2021 23:23:16 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:38164 Wed 12 May 2021 23:20:52 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:38190 Wed 12 May 2021 23:13:45 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:38137 Wed 12 May 2021 22:40:58 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:36608 Wed 12 May 2021 22:40:28 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:30035 Wed 12 May 2021 22:23:52 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:38179 Wed 12 May 2021 20:50:21 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:28655 Wed 12 May 2021 20:20:21 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:38335 Wed 12 May 2021 20:07:20 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39687 Wed 12 May 2021 20:06:40 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:38131 Wed 12 May 2021 19:46:08 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:34273 Wed 12 May 2021 19:20:56 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:31131 Wed 12 May 2021 19:16:41 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:32300 Wed 12 May 2021 19:15:32 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:29873 Wed 12 May 2021 19:13:21 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:34126 Wed 12 May 2021 19:08:39 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:38154 Wed 12 May 2021 19:07:19 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:38145 Wed 12 May 2021 18:42:26 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:36239 Wed 12 May 2021 18:11:36 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:38189 Wed 12 May 2021 18:05:20 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:37047 Wed 12 May 2021 17:17:09 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:36921 Wed 12 May 2021 17:12:16 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:30948 Wed 12 May 2021 16:47:38 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:37164 Wed 12 May 2021 16:42:14 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:35646 Wed 12 May 2021 16:41:41 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:37158 Wed 12 May 2021 16:08:02 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:35731 Wed 12 May 2021 15:59:08 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:30997 Wed 12 May 2021 15:43:54 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:40090 .05). The model chi-square value of 43.47 (approximately 44% ) was significant. Thus, the indication is that the model has a good fit in predicting the possibility of a fuel retail outlet being located in the core or peripheral zone of the metropolis as determined by the explanatory variables (the independent variables accounted for about 44% of possible factors which determined whether a fuel retail outlets is located either within the core or peripheral zones of the metropolis. The remaining 56% are factors not considered in the study). The result gotten from the in depth interview sessions corroborated the findings from the tested hypothesis. The third objective was to examine the effects which the supply chain technique employed (either vertically integrated model or third-party arrangement) has on the achievement of efficient and effective distribution of the products. In order to achieve this objective, all the 389 registered members of Petroleum Tanker Drivers (PTD) association who are members of the PTD in the metropolis were sampled, 265 (around 70%) of the distributed questionnaires were retrieved and used for the analysis. In depth interview sessions were also conducted with three different managers of the three major conglomerates in the downstream sector of the Nigerian petroleum sector. The result of one-way between subjects (ANOVA) which was conducted to compare differences in the management and performances of haulage services outsourced to the 3PLS and those run under VIM showed that there was a significant effect of ownership type on management performance (F (2,262) = 60.26, p<.05). The null hypothesis was therefore rejected while the alternate hypothesis was accepted. The findings from the interview sessions posted similar results. The fourth and final objective was to analyze the effect that the socio-economic attributes of the participants (haulers and managers of retail outlets) involved in the distribution of xxvi petroleum products has on the safe, efficient and cost-effective distribution of product and this was done through the use of descriptive statistics, inferential statistics and incisive analysis of the interview sessions. A total number of 265 (70%) out of the 389 registered members of Petroleum Tanker Driver Association (PTDA) participated in the study. Multiple regression analysis (MRA) was used to test this hypothesis. The result from the statistical analysis show that the use of stimulant, work condition, marital status and educational attainment/literacy level have joint influence on compliance (R2 = 0.31, F (4,260) = 29.72, p<.05). On the basis of the foregoing, the hypothesis is thus accepted. The result from the interview sessions confirmed the existence of strong relationship between the explanatory variables and the hypothetical dependant variable. The study recommended a review of the planning processes guiding the establishment of fuel retail outlets. The study also advocated that retailers should endeavour to have stronger control over the supply chain of their products this could done by investing more in VIM rather than outsourcing such functions to 3PLs. This will help in better business performances. Government agencies in charge of monitoring drug abuse among haulers are advised to be more proactive by the duo of prevention and punishment strategies. This should include advocacy campaign against drug abuse. Different ranges of punishments should also be meted out for individual haulers found culpable.]]> Wed 12 May 2021 15:06:55 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:40195 Wed 12 May 2021 15:06:06 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:40204 Wed 12 May 2021 15:01:15 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:40736 .05, partial η2 = 0.00). Based on these findings, it was recommended that teachers should adopt service learning and collaborative learning strategies in the teaching of environmental concepts and problems in Social Studies in order to improve students’ performance in Social Studies. Teachers should facilitate the use of service learning and collaborative learning strategies in schools to improve students’ environmental problem-solving skills and their achievement in the subject. Teaching institutions should not only include service learning and collaborative learning strategies in their curriculum but should endeavour to provide practical experience for pre-service teachers to be well grounded and equipped on the use of these strategies.]]> Wed 12 May 2021 14:46:14 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:40192 Wed 12 May 2021 14:45:10 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:40405 Wed 12 May 2021 14:44:25 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:40739 Wed 12 May 2021 14:37:30 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:40533 Wed 12 May 2021 14:36:01 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:40692 Wed 12 May 2021 14:33:53 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:40836 Wed 12 May 2021 14:22:24 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:41079 Wed 12 May 2021 14:08:51 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:40674 Wed 12 May 2021 14:05:29 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:40844 Wed 12 May 2021 13:59:17 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:41081 Wed 12 May 2021 13:58:48 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:40762 Wed 12 May 2021 13:54:35 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:40774 Wed 12 May 2021 13:52:26 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:29124 Tue 11 Jul 2023 16:25:27 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:40402 Tue 07 May 2024 10:54:04 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:40200 Tue 07 May 2024 09:51:06 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:30599 Thu 29 Sep 2022 14:23:25 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:30711 Thu 13 May 2021 15:04:39 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:36926 Thu 13 May 2021 12:45:50 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:30709 150% intensity) were old gravity schemes. Farmers on approximately 75% of Limpopo smallholder schemes are currently engaging in land exchange transactions in a highly insecure and un-formalised institutional setup. Land exchange prevalence longer than two years was moderately associated with cropping intensity and strongly associated with commercialisation. This result has three important implications. First, it suggests that more land is utilised on the schemes when there is vibrant land-leasing activity. Secondly, schemes with a higher prevalence of long-term leasing seem to have a strong tendency to be more commercialised. Thirdly, the duration of the lease is significant, as neither single-season, nor annual leases yielded any positive associations, while those exchanges that were two years or longer, were associated with increased performance. These findings highlight the potential for longer-term land-exchange interventions to address the widespread low land utilisation on smallholder schemes, and to catalyse more commercially-oriented farming. An irrigation scheme typology was derived from the cluster analysis and was aligned to a contemporary irrigation farming typology. The key descriptors included technology type, purpose of farming and scheme management type. By matching scheme type to the farmer typology (or typologies), strategic decisions regarding technology choices for infrastructure, land, and water institutional interventions can be better informed. All schemes demand attention to the multiple factors required to achieve performance, not least water-tenure security, irrigation management organisational development, and infrastructure modernisation. Complexity was demonstrated by the finding that multiple factors contribute to success, and that there are many dimensions that change independently and have a cascading effect through the system in ways that are difficult to predict. Agricultural systems support to achieve productivity and profitability are essential for success. The research findings lead to the recommendation that, in addition, strategic planners must also consider the implications of the dominant factors of water-technology choices so that these are manageable, and the dynamics of farm-size change based on land exchange processes, in order to harness new opportunities to maximise irrigation scheme performance in future.]]> Thu 13 May 2021 11:26:49 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39699 Thu 13 May 2021 11:10:58 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:37048 Thu 13 May 2021 08:47:30 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:36623 Thu 13 May 2021 08:05:54 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39844 Thu 13 May 2021 07:24:22 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:36664 NSN2 (148.55 mg/g) > NNN1 (131.88 mg/g) > NNN2 (75.87 mg/g). The bis-benzimidazole derivatives preference for metal ions was further investigated with a multi-element solution containing Rh(III), Ir(III), Pt(II), Pd(II) and Ni(II). The bis-benzimidazole derivatives showed the following order of loading capacity: NSN1 (47.28 mg/g) > NSN2 (23.89 mg/g) > NNN1 (17.47 mg/g) > NNN2 (14.91 mg/g) for Rh(III); NSN2 (10.64 mg/g) > NNN2 (6.84 mg/g) > NSN1 (5.74 mg/g) > NNN1 (5.02 mg/g) for Ir(III); NNN2 (33.96 mg/g) > NSN1 (30.95 mg/g) > NSN2 (19.95 mg/g) > NNN1 (14.92 mg/g) for Pt(II); NNN1 (47.94 mg/g) > NNN2 (28.90 mg/g) > NSN1 (16.22 mg/g) > NSN2 (15.83 mg/g) for Pd(II). Bis-benzimidazole derivatives showed no uptake of nickel(II) under these conditions. It was observed the ligand-selectivity order for Rh(III) was similar in both single-element and multi-element studies. This order showed that the bis-benzimidazoles containing a sulfur atom showed a high preference for rhodium(III) compared to Pt(II) which had a high preference for NNN2 as well as Pd(II) which had a high preference for NNN1. Ir(III) generally had a lower preference for the ligands presumably due to its higher kinetic inertness compared with Rh(III). Column sorption of [IrCl6]2- and [RhCl5(H2O)]2- on nanofibers functionalized with diammonium cations was carried out and the loading capacities of [IrCl6]2- were obtained. [RhCl5(H2O)]2- was not adsorbed by the sorbent materials while [IrCl6]2- was loaded onto the column. The loading capacities of [IrCl6]2- with the quaternary diammonium sorbent materials increased in the order of F-QuatDMDAMeBnz (60.29 mg/g) < F-QuatDMDABnz (67.61 mg/g) < F-QuatDMDACF3Bnz (107.59 mg/g) < F-QuatDMDANO2Bnz (140.47 mg/g). The loading capacity for Ir(IV) with quaternary diammonium cationic nanofibers increased with an increase in the electron-withdrawing nature of the quaternizing group. The charge delocalizing ability of the nitrobenzyl group resulted in the best interaction of the diammonium cation with [IrCl6]2-. Batch equilibrium studies were carried out to assess the efficiency of bis-benzimidazole chelating derivatives as adsorbents using a multi-metal solution (Rh(III), Ir(III), Pt(II), Pd(II) and Ni(II)) in 0.5 M HCl. The efficiency of the quaternary diammonium cations was tested using a binary metal solution (Ir(IV) and Rh(III)) in 6 M HCl. The isothermal batch adsorption studies of a multi-metal solution with bis-benzimidazoles derivatives fitted the Langmuir isotherm model which confirmed monolayer adsorption onto a homogeneous surface. The Langmuir isotherm parameter (qe (mg/g)), using functionalized nanofibers, showed the order of NNN2 (128.21 mg/g) > NSN1 (99.01 mg/g) > NSN2 (91.74 mg/g) > NNN1 (84.03 mg/g) for Pt(II); NNN1 (66.23 mg/g) > NNN2 (5.89 mg/g) > NSN1 (1.40 mg/g) > NSN2 (0.59 mg/g) for Pd(II); NSN2 (10.64 mg/g) > NNN2 (6.84 mg/g) > NSN1 (5.74 mg/g) > NNN1 (5.02 mg/g) for Ir(III); NSN1 (140.85 mg/g) > NSN2 (109.89 mg/g) > NNN1 (104.17 mg/g) > NNN2 (91.74 mg/g) for Rh(III). The pseudo-first-order kinetics model was found to be the best fit to describe the adsorption kinetics of all metal ions onto all the sorbent materials. K1 (min-1) value in pseudo-first-order kinetics showed the same order of adsorption as observed in the Langmuir isotherms. The isothermal batch adsorption studies of [IrCl6]2- and [RhCl5(H2O)]2- with quaternary diammonium cations fitted the Freundlich isotherm model and confirmed to be effective for multiple-layered adsorption onto a heterogeneous surface. The Freundlich isotherm parameter (kf (mg/g)) using functionalized quaternary diammonium cationic nanofibers increased in the order of F-QuatDMDANO2Bnz (794.33 mg/g) > F-QuatDMDACF3Bnz (185.35 mg/g) > F-QuatDMDABnz (156.32 mg/g) > F-QuatDMDAMeBnz (112.46 mg/g) for Ir(IV) uptake. F-QuatDMDANO2Bnz resin showed the highest adsorption than that of F-QuatDMDAMeBnz, F-QuatDMDABnz and F-QuatDMDACF3Bnz and this order is similar to what was observed in column studies. The quaternary diammonium cations were shown to have the highest adsorption capacity for Ir(IV) compared with Rh(III). The adsorption of Rh(III) was also observed to increase in the order of F-QuatDMDANO2Bnz (177.83 mg/g) > F-QuatDMDACF3Bnz (40.37 mg/g) > F-QuatDMDABnz (36.98 mg/g) > F-QuatDMDAMeBnz (12.71 mg/g). The pseudo-second-order kinetic model was found to be the best fit to describe the adsorption kinetics of both metal ions onto all the sorbent materials. K2 (g.mg-1min-1) value in pseudo-second-order kinetics showed the same order of adsorption as observed in the Freundlich isotherms. The adsorption studies showed adsorption takes place via chemisorption process. This thesis presents PGMs and iridium-specific materials that could be applied in solutions of secondary PGMs sources containing rhodium, platinum and palladium with bis-benzimidazoles as well as in feed solutions from ore processing with diammonium cations for iridium recovery.]]> Thu 13 May 2021 07:20:28 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:28644 Thu 13 May 2021 06:58:27 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:34478 Thu 13 May 2021 06:50:15 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:32266 Thu 13 May 2021 06:46:04 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:38169 Thu 13 May 2021 06:45:15 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:34081 Thu 13 May 2021 06:38:10 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39289 Thu 13 May 2021 06:33:01 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:36284 Thu 13 May 2021 06:30:24 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:36231 Thu 13 May 2021 06:13:26 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:35489 Thu 13 May 2021 05:55:43 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:34035 Thu 13 May 2021 05:52:57 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:30950 Thu 13 May 2021 05:44:48 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:38132 Thu 13 May 2021 05:24:24 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39072 Thu 13 May 2021 05:20:42 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:34276 Thu 13 May 2021 05:07:10 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:38142 Thu 13 May 2021 04:55:59 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:38259 Thu 13 May 2021 04:33:34 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:35756 Thu 13 May 2021 04:25:22 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:28641 Thu 13 May 2021 04:24:57 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:36280 Thu 13 May 2021 04:21:00 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:30936 Thu 13 May 2021 04:03:21 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:38161 Thu 13 May 2021 03:49:40 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:29790 Thu 13 May 2021 03:46:18 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:30946 Thu 13 May 2021 03:38:01 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:29860 Thu 13 May 2021 02:37:59 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:36155 Thu 13 May 2021 02:25:13 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:34124 Thu 13 May 2021 02:13:18 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:36629 Thu 13 May 2021 01:56:47 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:30033 Thu 13 May 2021 01:51:14 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:36590 Thu 13 May 2021 01:43:19 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:38163 Thu 13 May 2021 01:42:53 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39051 Thu 13 May 2021 01:36:45 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:36791 Thu 13 May 2021 01:32:02 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:36879 Thu 13 May 2021 01:12:28 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:38260 Thu 13 May 2021 00:38:50 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:38141 Thu 13 May 2021 00:36:54 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:38922 Thu 13 May 2021 00:25:19 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:36669 Fri 15 Mar 2024 13:06:48 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:30949 Fri 15 Mar 2024 13:00:57 SAST ]]>