https://commons.ufh.ac.za/vital/access/manager/Index ${session.getAttribute("locale")} 5 https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42197 Wed 23 Jun 2021 09:36:39 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:30807 Wed 17 Jan 2024 13:06:29 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:27074 Wed 13 Mar 2024 14:24:35 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:41619 80 μg∙L-1, ≥ 2781 H. akashiwo cells∙mL-1). Dissolved oxygen differed significantly by bloom state, with the highest dissolved oxygen concentrations. Larval fish density, diversity and community structure variability were lower during hypereutrophic blooms compared to standard blooms and bloom absence, albeit statistically insignificant. Estuarine resident larval density was negatively correlated with dissolved oxygen concentration (P < 0.001). Dominant prey copepod of G. aestuaria larvae, P. hessei, was less abundant and variable during hypereutrophic blooms (mean: 664, range: 4-4301 individuals per m3) compared to standard blooms (mean: 950, range: 2-5237 individuals per m3) and bloom absence (mean: 1182, range: 23-7259 individuals per m3). Although HABs did not appear to drive a mismatch between prey and G. aestuaria larvae, early juvenile larvae made only a small contribution to the assemblage (0.2-1.8%). In terms of predator effects, yolk sac larvae were negatively related to R. terranatalis (P < 0.05). A significant positive relationship was found between prey, P. hessei and G. aestuaria preflexion (P < 0.001), flexion (P < 0.001) and postflexion (P < 0.05) larvae. In a world first, the effects of HABs were investigated on a larval fish species, Gilchristella aestuaria, using biochemical body condition analyses. During severe bloom conditions, G. aestuaria larvae were smaller and the assemblage consisted of mainly early developmental stages (stats). Body condition (RNA per dry weight) was poorest in the presence of hypereutrophic blooms (P < 0.001). A bell-curved relationship between RNA/DW and dissolved oxygen concentration was also produced in a 3-day time-lagged GAM (P < 0.001). In conclusion, hypereutrophic bloom conditions appeared to trigger adult G. aestuaria spawning in the upper mesohaline zone of the estuary in response to heightened primary productivity which occurs during the early bloom stage. However, reductions in copepod abundance (P. hessei) and unfavourable oxygen concentrations interfered with grow-out of G. aestuaria larvae. This research showed that HABs can alter nursery properties to the detriment of G. aestuaria larvae can have serious knock-on effects up the food chain. The loss in abundance of adult, juvenile and larval G. aestuaria, a key forage fish in South African estuaries, has major implications for estuarine food webs, especially in reduced prey availability to juvenile fishes and birds. There is still much to learn about the effects of HABs on the physiological and behavioural aspects on plankton communities worldwide.]]> Wed 13 Mar 2024 14:10:51 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:32483 Wed 13 Mar 2024 11:50:54 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:20443 Wed 13 Mar 2024 11:43:41 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:30809 Wed 13 Mar 2024 10:54:08 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:30776 Wed 13 Mar 2024 10:12:44 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:32357 Wed 13 Mar 2024 10:12:28 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:41606 Wed 13 Mar 2024 09:37:38 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:30403 Wed 13 Mar 2024 09:09:33 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39669 Tue 24 May 2022 13:55:38 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:37131 Tue 24 May 2022 13:27:37 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:36184 Thu 14 Mar 2024 15:06:22 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:9453 Thu 13 May 2021 16:14:50 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:10063 Thu 13 May 2021 15:49:24 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:28893 Thu 13 May 2021 15:31:53 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:20440 Thu 13 May 2021 14:16:09 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:30786 Thu 13 May 2021 13:38:18 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:28626 Thu 13 May 2021 12:47:12 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:28455 Thu 13 May 2021 09:54:13 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:31495 Thu 13 May 2021 08:56:34 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:20770 Thu 13 May 2021 08:55:00 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39403 Thu 13 May 2021 08:54:11 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:32513 Thu 13 May 2021 08:52:29 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:35249 0.05). However, this growth was associated with a significantly higher (P < 0.05) food conversion ratio (FCR) of 19.16 vs 18.11 for Cowpea and Lablab, respectively. The apparent DM, non structural carbohydrate (NSC) nutrient digestibilities were significantly different (P < 0.05) for Lablab and Cowpea. Furthermore sex of animal influenced significantly (P < 0.05) the DM, ADF, NSC and NDF digestibilities. Lablab and Cowpea did not influence (P > 0.05) individual VFA molar concentrations in both sexes. However, animals fed Lablab had significantly higher butyrate concentrations (P < 0.05). Lablab and Cowpea forages significantly lowered (P > 0.05) enteric methane production in goats compared to a concentrate diet, and this was related to animal activity. Animals produced significantly more (P < 0.05) methane gas when ruminating than feeding or just standing. The average methane produced each year was lower but not significant (P > 0.05) for animals fed Cowpea than Lablab (4.602kg CH4, vs. 4.719kg CH4) when expressed per year. Male animals produced more gas than females with values of 17.40L/day; 12.46 g/kg DMI and 0.126g/day vs. 15.47L/day, 12.28 g/kg DMI, and 0.0109g/day, respectively. Forage legumes had no significant effects (P > 0.05) on serum total proteins (TP), globulin, urea, creatinine, alanine aminotransferase (ALT), alkaline phosphatase (ALP), and gamma- glutamyl transferase (GGT) concentrations, but serum concentration of albumin was influenced by the diets (P < 0.05). Sex of animals significantly influenced ALP concentration (P < 0.05) with male animals exhibiting higer ALP values than females. Measured over time, the plasma concentration of urea and ALP significantly increased (P < 0.05) while creatinine and cholesterol concentration decreased (P < 0.05). Although the overall serum concentration of urea, total proteins, globulin, creatinine, ALT, ALP and GGT remained unchanged among the treatments and between sexes; treatment by sex, treatment by day and sex by day interactions were significant (P < 0.05). The white blood cell (WBC), red blood cell (RBC), mean corpuscular haemoglobin (MCH), mean corpuscular haemoglobin concentration (MCHC), haemoglobin, haematocrite, platelet and mean platelet volume (MPV) levels were similar among treatments and between sexes (P > 0.05). The WBC decreased with time by 8.07 x10 9/l while mean crepuscular volume (MCV) increased by 11.83(fl) from day 15 to day 55. Treatment diets significantly (P < 0.05) influenced neutrophile (percent) content while sex influenced basophile (percent) content. There were no treatment or sex effects (P > 0.05) on lymphocytes (percent), monocytes (percent) and eosinophiles (percent). In the meat quality study, the dietary treatments and sex had a significant (P < 0.05) effect on dressing out percent (DPpercent), initial pH, redness (a*), yellowness (b*), Warner Blartze Shear force (WBS) , drip loss and cooking loss in the chevon from Xhosa goats. Compared with a commercial pellet diet, Lablab and Cowpea diets resulted in similar slaughter body weights (SBW), hot carcass weight (HCW) and cold dressed mass (CDM) of carcasses. However, female animals exhibited a significantly (P < 0.05) higher DPpercent than male animals (42.3percent vs. 38.9percent) for all treatments. The male animals exhibited significantly (P < 0.05) higher pH values one hour after slaughter than females (5.79 vs 5.67). Neverthreless the diet and gender did not significantly (P > 0.05) affect the ultimate pH (pHu). Meat samples from male animals had significantly (P < 0.05) higher redness values than females. Feeding cowpea significantly (P < 0.05) increased meat redness with the least drip loss of chevon. Female animals produced significantly (P < 0.05) tougher chevon compared to male animals; 4.16kg and 3.36kg for female and male, respectively. Lablab and Cowpea posses high CP levels and moderately lower NDF with high ADF values that influences dry matter intake (DMI), digestibility and growth of goats. These forage legumes meet animal requirements for fat, ADF, NDF, CP, Ca, Mn, zinc and Cu and their biomass yield is satisfactory.]]> Thu 13 May 2021 08:24:35 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:32396 80 mm) showed a greater component of invertebrates in previously unexplored habitats, which proves their omnivorous diet related to ontogenetic niche use. Knowledge of fine-scale habitat use by fishes is essential for conservation planning as exclusion zones can be optimised to limit anthropogenic influence on nursery use patterns in fishes. The availability of shallow water habitats (<60 cm) was assessed as an additional driver to explain the species diversity and richness of juvenile fishes within the lower reaches. These habitats are known as important nursery habitats providing numerous marine and estuarine spawned fishes with adequate refuge and food supply. This shallow water volume was measured by means of a two-man kayak using both the spring high and low tides in the lower reaches of these systems to assess juvenile assemblages. It was clear from the results that aquatic vegetation significantly adds to the volume of these areas and as a result, much greater fish density and species richness were observed. Generalized additive models showed that marine spawned species were particularly reliant on the availability of this shallow water along with submerged vegetation and additional environmental variables. The presence of structurally submerged vegetation typically characterized within shallow estuarine waters is commonly believed to reduce predation risk resulting in elevated densities of biota. Based on the current stock status and percentage of pristine breeding stock, five fish species classified as collapsed/overexploited was consistently found within these systems with an additional 14 species currently classified as exploited/vulnerable. Based on the current species richness and diversity, available habitat cover and knowledge regarding important recreational species, priority areas that require some form of legal protection in order to meet potential biodiversity targets, could be identified. It is a legal requirement in South Africa that all estuaries require management plans that should be based on good knowledge of priority habitats for fauna and flora. The identification of estuarine protected areas is seen as a mechanism for protecting a representative sample of the biodiversity accompanied by a complete range of environmental gradients and habitat types at a reasonable scale in order to maximize the protection of estuarine species.]]> Thu 13 May 2021 08:20:19 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:26472 Thu 13 May 2021 08:17:16 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:9105 Thu 13 May 2021 08:11:56 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:9137 Thu 13 May 2021 08:07:05 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:28483 Thu 13 May 2021 07:24:08 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:39314 Thu 13 May 2021 07:23:53 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:36501 Thu 13 May 2021 07:19:19 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:8277 Thu 13 May 2021 07:15:19 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:10449 Thu 13 May 2021 07:13:00 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:9831 Thu 13 May 2021 07:04:44 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:10089 Thu 13 May 2021 07:04:11 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:8253 Thu 13 May 2021 07:02:49 SAST ]]> 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https://commons.ufh.ac.za/vital/access/manager/Repository/vital:32558 Thu 13 May 2021 05:59:37 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:27571 Thu 13 May 2021 05:56:46 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:9879 Thu 13 May 2021 05:54:16 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:36140 Thu 13 May 2021 05:47:12 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:26400 Thu 13 May 2021 05:45:42 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:30585 Thu 13 May 2021 05:45:06 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:30581 Thu 13 May 2021 05:38:41 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:28868 Thu 13 May 2021 05:36:37 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:31374 Thu 13 May 2021 05:35:24 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:8179 Thu 13 May 2021 05:34:58 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:9273 Thu 13 May 2021 05:34:55 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:30579 Thu 13 May 2021 05:34:31 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:16145 Thu 13 May 2021 05:34:07 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:10397 Thu 13 May 2021 05:26:59 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:32669 Thu 13 May 2021 05:24:44 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:31640 Thu 13 May 2021 05:23:01 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:30146 Thu 13 May 2021 05:21:06 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:33442 Thu 13 May 2021 05:11:34 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:20963 Thu 13 May 2021 05:04:42 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:33379 Thu 13 May 2021 05:00:45 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:30537 B ± 0.1ᵒ and (111) ± 0.1ᵒ] using similar growth conditions yielded a higher dot density on the (100) substrate compared to the (111) substrate. This was attributed to the presence of terraces/atomic steps induced by the misorientation on the (100) substrate, which invariably gives rise to increased adsorption and an enhanced sticking coefficient of adatoms. Studies on the influence of a buffer layer on the morphology of uncapped dots showed that the shape and size of the dots are sensitive to the thickness of the buffer layer. In some case a corrugated buffer surface resulted, which introduced order in the arrangement of the dots, which formed preferentially inside the troughs. An increase in the V/III ratio from 1.0 to 3.0 was found to reduce the areal density of the QDs, while an analysis of the diameter histograms showed a narrowing of the size distribution with an increase in V/III ratio. The larger size distribution at low V/III was ascribed to the increase in indium species and the increased indium adatom migration length. This leads to increased dot density and nucleation sites, and thus triggers an increase in the conversion of tiny QDs into thermodynamically more suitable larger dots via coalescence. However, as the V/III ratio increased, the number of indium adatoms available for growth on the surface reduced, which automatically led to a decrease in the migration length of indium species which is unfavourable for the production of nucleation sites and to a decrease in dot density. Low growth rates were found to be beneficial for the growth of a high density (~5×1010cm-2) of QDs. Photoluminescence (PL) analysis of the capped samples at low temperature (~10 K), using an excitation power of 2 mW, showed a PL peak at ∼732 meV. Upon an increase in laser power to 120 mW, a blue shift of ∼ 8 meV was noticed. This emission typically persisted up to 60–70 K. An increase in the number of InSb QD-layers, was observed to cause an increase in the luminescence spectral line width and a long-wavelength shift of the PL lines, together with an enhancement in the strength of the PL emission. However, high resolution transmission electron microscopy (HRTEM) of the capped dots revealed the formation of an InGaSb quantum well-like structure, ∼10 nm thick, which was responsible for the PL signal mentioned above. The absence of QDs in the capped sample was attributed to inter-diffusion of Ga and In during the deposition of the cap layer, giving rise to a quantum well (QW) instead of the intended QDs. The presence of threading dislocations and stacking faults were also observed in the TEM micrographs of the samples containing multilayers, which can account for the fast quenching of the PL emission with increasing temperature from these samples. Theoretical simulations of the band alignment, wave functions and energy levels were in good agreement with the data collected from the PL spectra of the samples.]]> Thu 13 May 2021 04:56:31 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:8437 Thu 13 May 2021 04:54:24 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:9839 Thu 13 May 2021 04:48:07 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:10004 Thu 13 May 2021 04:45:50 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:20768 Thu 13 May 2021 04:42:56 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:33939 Thu 13 May 2021 04:32:53 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:20916 Thu 13 May 2021 04:22:29 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:9264 Thu 13 May 2021 04:18:57 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:9503 Thu 13 May 2021 04:16:23 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:29371 Thu 13 May 2021 04:14:36 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:8414 Thu 13 May 2021 04:10:56 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:28373 Thu 13 May 2021 04:09:23 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:30949 Fri 15 Mar 2024 13:00:57 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:36690 Fri 15 Mar 2024 12:32:30 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:33371 Fri 15 Mar 2024 09:15:47 SAST ]]>