https://commons.ru.ac.za/vital/access/manager/Index ${session.getAttribute("locale")} 5 https://commons.ru.ac.za/vital/access/manager/Repository/vital:44936 Wed 27 Oct 2021 22:55:36 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:44935 Wed 27 Oct 2021 22:48:36 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:44934 Wed 27 Oct 2021 22:42:45 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:43884 Wed 24 Apr 2024 13:44:00 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5360 0.05) although Xai Xai and Inhaca populations had some significant population comparisons for mtDNA (P < 0.05). AMOVA did not explain any significant variation at the between groups hierarchical level for any pre-defined groupings except for a mtDNA grouping which separated out Xai Xai and Inhaca from other sampling sites. SAMOVA, isolation by distance tests, structure analysis, principle component analysis and spatial autocorrelation analysis all indicated a single population of C. puniceus as being most likely. The migrate-n analysis provided evidence of current driven larval transport, with net migration rates influenced by current dynamics.Two hundred and thirty six unique presence points of C. puniceus were correlated with seasonal maximum and minimum temperature data and bathymetry to model the current distribution and predict future distribution changes of the species up until 2030. Eight individual species distribution models were developed and combined into a mean ensemble model using the Biomod2 package. Winter minimum temperature was the most important variable in determining models outputs. Overall the ensemble model was accurate with a true skills statistic score of 0.962. Binary transformed mean ensemble models predicted a northern and southern range contraction of C. puniceus' distribution of 15 percent; by 2030. The mean ensemble probability of occurrence models indicated that C. puniceus' abundance is likely to decrease off the southern Mozambique coastline but remain high off KwaZulu-Natal. The results of the genetic analysis support the theory of external recruitment sustaining the KwaZulu Natal fishery for C. puniceus. While the high genetic diversity and connectivity may make C. puniceus more resilient to disturbances, the loss of 15 percent; distribution and 11 percent; genetic diversity by 2030 will increase the species vulnerability. The decrease in abundance of C. puniceus off southern Mozambique together with current widespread exploitation levels could result in the collapse of the fishery. A single transboundary stock of C. puniceus highlights the need for co-management of the species. A combined stock assessment between South Africa and Mozambique and the development of further Marine Protected Areas off southern Mozambique are suggested as management options to minimise the vulnerability of this species.]]> Wed 12 May 2021 23:27:51 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:3873 Wed 12 May 2021 23:26:47 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:1102 Wed 12 May 2021 22:48:10 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:3364 Wed 12 May 2021 22:45:36 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:3522 Wed 12 May 2021 22:35:34 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:862 Wed 12 May 2021 22:24:10 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5971 Wed 12 May 2021 20:35:27 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:4694 Wed 12 May 2021 20:29:26 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:4725 Wed 12 May 2021 20:25:10 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:4775 Wed 12 May 2021 20:24:24 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5970 Wed 12 May 2021 20:02:36 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:2325 Wed 12 May 2021 19:46:38 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7869 Wed 12 May 2021 19:37:47 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:4698 Wed 12 May 2021 19:29:19 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5357 Wed 12 May 2021 19:16:47 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:38025 Wed 12 May 2021 19:13:10 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7872 Wed 12 May 2021 19:02:28 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5056 53% TiO₂); the ilmenite high with zircon and rutile shows tendency to increase northwards while ilmenite low increase southwards. Zircon, monazite, rutile, chromite, kyanite and staurolite show low variability, which is probably associated with high resistance of minerals for abrasion during transportation and diagenesis. The depositional model of the Namalope deposit, in the flat area and wet concentrate plant B in particular, suggests deposition in a shallow marine environment associated with regression for deposition of Unit 6, 7 and 9 and transgression during deposition of Unit 82. The spatial distribution of heavy minerals in the Namalope deposit and its environment of deposition are the key points for discovery of new deposits around the Namalope with the same characteristic of mineral assemblage and they are used for mine strategic plans such as update block model and mine design.]]> Wed 12 May 2021 19:01:48 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7861 Wed 12 May 2021 18:55:24 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:26570 Wed 12 May 2021 18:40:26 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:37950 Wed 12 May 2021 17:52:45 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:1084 Wed 12 May 2021 17:27:16 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:3363 Wed 12 May 2021 17:05:27 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:825 Wed 12 May 2021 16:49:02 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5997 Wed 12 May 2021 16:31:58 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:823 Wed 12 May 2021 16:31:10 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:2310 Wed 12 May 2021 16:27:28 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:3629 Wed 12 May 2021 16:17:05 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5998 Wed 12 May 2021 16:15:50 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:2012 Wed 12 May 2021 16:10:34 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5848 Wed 12 May 2021 15:53:39 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5151 Wed 12 May 2021 15:47:42 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:40217 Wed 12 May 2021 14:03:59 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:73300 Wed 12 Jun 2024 10:16:06 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:73288 Wed 12 Jun 2024 07:25:31 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:1155 Wed 12 Jul 2023 08:28:48 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:69142 Wed 08 May 2024 18:26:32 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:29503 Wed 08 May 2024 18:18:06 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6971 Tue 21 May 2024 06:48:36 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:40212 Tue 14 May 2024 08:39:51 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:40039 Tue 14 May 2024 06:25:07 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:40040 Tue 14 May 2024 06:24:19 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:38015 Tue 14 May 2024 05:47:09 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:38246 Tue 14 May 2024 05:46:33 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:28605 Tue 13 Jun 2023 12:32:30 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:38436 Tue 09 Aug 2022 05:28:24 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:35644 Tue 09 Aug 2022 05:24:53 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:41175 Tue 07 May 2024 11:26:10 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6561 Tue 07 May 2024 09:48:45 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:69149 Tue 07 May 2024 09:03:42 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:69148 Tue 07 May 2024 09:02:48 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:69146 Tue 07 May 2024 09:02:10 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5362 Thu 29 Sep 2022 14:15:59 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:38213 Thu 25 Apr 2024 15:37:22 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:38239 Thu 25 Apr 2024 15:35:23 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:72749 Thu 23 May 2024 15:56:02 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:72752 Thu 23 May 2024 15:54:51 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7070 Thu 16 May 2024 06:48:52 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:4464 Thu 13 May 2021 14:21:31 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:4105 Thu 13 May 2021 10:52:51 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5152 Thu 13 May 2021 10:14:56 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:26580 99 % in selectively extracting the metalloporphyrins. The impact of the template on the affinity of recognition for NTPP was evaluated. The results showed that the NTPP adsorption capacity increased as the molar ratio of NTPP to styrene was increased from 1:1 to 3:1. The optimal ratio of template to functional monomer which yielded the best specific affinity and highest recovery (99.9 %) was 3:1. The effects of trifluoroacetic acid (TFA), dichloromethane (DCM), dimethyl sulphoxide (DMSO), pentane (PEN) on electro-spinnability of the polymer solutions and the morphological appearance of the nanofibers were investigated. The imprinted nanofibers exhibited the same selectivity specialism for both NTPP and VTPP. A remarkable stability in relation to reusability was observed when imprinted nanofibers were used, as they could be reused nine times without incurring any significant loss in removal efficiency. The results were validated by analysing a certified reference material. The imprinted sorbents were therefore found to be selective sorbents that are well suited for handling trace metals in organic media.]]> Thu 13 May 2021 09:54:20 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5051 Thu 13 May 2021 07:26:32 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:4113 Thu 13 May 2021 07:20:46 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5969 Thu 13 May 2021 07:08:53 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:3550 Thu 13 May 2021 06:54:04 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:4171 Thu 13 May 2021 06:53:01 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7875 Thu 13 May 2021 06:50:52 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7883 Thu 13 May 2021 06:15:41 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:3211 Thu 13 May 2021 06:11:58 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:1154 Thu 13 May 2021 06:00:53 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:26609 2.5Ga) and are located to the south and east of Lake Victoria on the Tanzania craton. The Tanzania Craton is surrounded by Usagaran 1.9 Ga rocks (the east African orogenic belt (EAO) better known as the Mozambique belt) to the east and the Ubendian belt to the south and west. Published reports show that the eastern part of the Tanzania Craton is dominated by the fragments of Archaean rocks. Metamorphism along East Africa and the Tanzania Craton is due to several geological events. These geological events include the intrusion of granites in the Archaean Tanzania Craton (3 Ga), subduction of ocean plate resulted to the formation of Usagaran belt (1.9 Ga), opening and closure of Mozambique Ocean, which resulted in the formation of the Mozambique belt between 700 – 800 Ma and the Pan African orogeny at 640 – 620 Ma, which is associated with the formation of Gondwana. It is believed that fragments from the Archaean Tanzania craton were re - metamorphosed during these events. The Handeni project (the focus of this thesis) is located in the northern portion of the eastern part of the Usagaran belt (1.9 Ga) comprising the eastern part of Archaean Tanzania Craton. The area is characterized by Proterozic rocks of basaltic composition. The documented 2.7 Ga rocks at the Kilindi Handeni Superterrane at the northern part of the Usagaran belt correlate well with 2.7 Ga of Nyanzian rocks of Archaean Tanzania craton. The Handeni project area is geologically dominated by metamorphosed and deformed units of quartzofeldspathic gneisses, migmatitic gneiss, garnet silicified rock, garnetiferous amphibolite, garnetiferous granulite, graphitic schist and hornblende pyroxenite. Intensive deformation features that were developed include folds (sheath folds, micro and macro scales), faults, shears and regional thrusts. This thesis focuses on identifying the protolith of the rocks, alteration minerals, and metamorphic assemblages in the project area in order to understand the timing of gold mineralization. Geological investigation of core, ore petrology and mineralogy, mineral composition by using JEOL microprobe analysis and XRF analysis of bulk rocks were utilized. All the analytical work was done at the Geology laboratory, Rhodes University. Petrographic analysis shows that the rocks sampled in the study area are characterized by alteration minerals such as calcite, dolomite and sericite. Sulphide minerals including chalcopyrite, pyrrhotite, pyrite, pentlandite and gersdorffite were identified. Gold mineralization is associated with disseminated sulphides in association with trace amounts of base metals. Four rock types were proposed as host rocks for the mineralization, namely garnet silicified rock with superimposed quartz veins, garnetiferous amphibolite, garnetiferous granulite and hornblende pyroxenite. Fold troughs, filled fractures associated with episodes of folding, quartz veins and shear zones are suggested as gold precipitation sites. The presence of high grade metamorphic rocks containing gold, intermediate to low grade assemblages with sulphides and associated hydrothermal alteration as well as a complex deformation history suggests that the Handeni mineralization took place over an extended time period stretching from a ductile to a brittle environment.]]> Thu 13 May 2021 05:05:57 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:4169 Thu 13 May 2021 04:27:15 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:4457 Thu 13 May 2021 03:30:35 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:22353 Thu 13 May 2021 03:27:51 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:1975 Thu 13 May 2021 03:19:46 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5846 Thu 13 May 2021 03:19:43 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:4108 Thu 13 May 2021 03:02:47 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5055 Thu 13 May 2021 02:32:25 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:1966 Thu 13 May 2021 02:30:31 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:1085 Thu 13 May 2021 01:38:07 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5847 Thu 13 May 2021 01:12:18 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5985 Thu 13 May 2021 00:47:31 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:4774 Thu 13 May 2021 00:35:10 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:7868 Thu 13 May 2021 00:35:05 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5984 Thu 13 May 2021 00:20:33 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:5359 Thu 13 May 2021 00:19:27 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:1962 Thu 13 May 2021 00:08:05 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:73363 Thu 13 Jun 2024 12:51:57 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:38437 Mon 29 Apr 2024 12:34:37 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:45410 Mon 24 Apr 2023 11:43:19 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:38345 Mon 13 May 2024 09:07:44 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:6972 Fri 26 Apr 2024 11:24:05 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:70243 Fri 26 Apr 2024 10:23:46 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:72090 Fri 26 Apr 2024 10:20:57 SAST ]]> https://commons.ru.ac.za/vital/access/manager/Repository/vital:43672 Fri 10 May 2024 15:06:02 SAST ]]>