http://vital.seals.ac.za:8080/vital/access/manager/Index ${session.getAttribute("locale")} 5 Financial integration in the BRICS countries http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:42278 Wed 13 Mar 2024 14:27:45 SAST ]]> Decision analysis to inform invasive alien plant management in the Garden Route Biosphere Reserve http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:41606 Wed 13 Mar 2024 09:37:38 SAST ]]> An investigation of the experiences of psychotherapists regarding Ubuntu in their psychotherapy practice: an interpretative phenomenological analysis http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:38577 Wed 12 Oct 2022 12:44:54 SAST ]]> Biogeographic patterns of endolithic cyanobacteria and their negative impacts on mussels along the South African coast http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:38367 Wed 12 May 2021 23:40:00 SAST ]]> An integrative approach to understanding vulnerability of an alpine range-restricted bird to climate warming http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:38746 Wed 12 May 2021 23:03:20 SAST ]]> A critique of the language of record in South African courts in relation to selected university language policies http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:37968 Wed 12 May 2021 22:47:28 SAST ]]> A strategy towards implementing standardised data structures in municipal information systems http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:39482 Wed 12 May 2021 22:33:26 SAST ]]> A comparative study of conceptualisations and practices of inclusion as an aspect of social justice in three teacher education institutions in Canada, South Africa and Zimbabwe http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:38314 Wed 12 May 2021 21:04:16 SAST ]]> Analysing emergent time within an isolated Universe through the application of interactions in the conditional probability approach http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:38547 Wed 12 May 2021 20:57:26 SAST ]]> An investigation into the nature and adequacy of tax compliance tools available to assist small businesses in the state of Oklahoma in the United States of America http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:37937 Wed 12 May 2021 20:49:13 SAST ]]> A lean production approach to materials management in the Nigerian construction industry http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:39408 Wed 12 May 2021 20:27:28 SAST ]]> An exploration of how Grade 3 Foundation Phase teachers develop basic scientific process skills using an inquiry-based approach in their classrooms http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:38416 Wed 12 May 2021 20:04:46 SAST ]]> Comprehensive characterization of the antidiabetic potential of selected plants and macrofungi from Africa using an in vitro target-directed screening platform and cellomics http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:39653 Wed 12 May 2021 19:57:13 SAST ]]> Indigenous Knowledge on Birthing Practices and the Use of Uterotonic Medicinal Plants to Prevent and Treat Postpartum Haemorrhage: A Mixed Methods Approach http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:39067 Wed 12 May 2021 19:41:43 SAST ]]> A novel, improved throughput bioassay for determining the delative speed of antimalarial drug action using fluorescent vitality probes http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:37810 Wed 12 May 2021 19:28:59 SAST ]]> Formulation development, manufacture and evaluation of a lamivudine-zidovudine nano co-crystal thermo-responsive suspension http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:37897 Wed 12 May 2021 19:08:27 SAST ]]> Conflict related sexual violence against males:recognition by and responses of humanitarian organizations in Africa http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:39605 Wed 12 May 2021 18:39:49 SAST ]]> A sociological understanding of contemporary child marriage in Mabvuku, Harare, Zimbabwe http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:38091 Wed 12 May 2021 18:26:49 SAST ]]> Genetic connectivity in sandy beach macroinfauna with contrasting life histories and zonation patterns http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:39380 Wed 12 May 2021 17:55:20 SAST ]]> Biodiversity conservation and rural livelihoods across four nature reserves in the Eastern Cape Province, South Africa: Striving towards a balance between livelihoods and conservation http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:37649 Wed 12 May 2021 17:51:01 SAST ]]> Addressing flux suppression, radio frequency interference, and selection of optimal solution intervals during radio interferometric calibration http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:38663 Wed 12 May 2021 17:37:38 SAST ]]> Developing macroinvertebrate trait- and taxonomically-based approaches for biomonitoring wadeable riverine systems in the Niger delta, Nigeria http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:37907 20-40mm), swimmers, flattened body shape, a preference for temporary attachment, crawling, respiration with aerial/vegetation, possession of breathing tubes, possession of strap or other apparatus for respiration, streamlined body, and a high sensitivity to oxygen depletion. Permanent attachment as an ecological preference associated with LIS was also positively correlated with increasing dissolved oxygen (DO) and was deemed a pollution sensitive ecological preference. The possession of very small body size (<5mm), associated with HIS, was deemed a pollution-tolerant trait and was negatively correlated with DO, confirming the deteriorating state of the urban and urban-agricultural rivers. The impact of urban-forestry pollution on the distribution pattern of macroinvertebrate traits and ecological preferences was also explored in the selected rivers. Traits and ecological preferences such as possession of hard-shell, large body size, and grazing as a feeding preference which were significantly positively associated with the LIS, were also either significantly positively correlated with DO, or significantly negatively correlated with increasing any two of flow velocity, water temperature, BOD5 and nutrient. These traits and ecological preferences were deemed sensitive in forested rivers receiving urban pollution. Further, burrowing, the pupa aquatic stage, and predation which were significantly positively associated with HIS on the RLQ ordination, were also significantly negatively associated with DO. These traits were deemed tolerant of forested systems receiving urban pollution. Multimetric indices (MMI) were developed, validated and applied for urban, urban-agriculture and urban-forested (MMI-urban, MMI-urban-agric and urban-forest) areas. Of the 26 metrics that satisfactorily discriminated between the LIS, the MIS, and the HIS for MMI-urban, only five metric were retained for integration into MMI-urban, they are log VeL, Hemiptera abundance, % Coleoptera + Hemiptera, % Chironomidae + Oligochaeta and Evenness index. Further, of the 18 metrics that satisfactorily discriminated between the LIS, the MIS, and the HIS for MMI-urban-agric, only 12 metrics were retained and nine proved to be redundant. The nine metrics represent different measures; two of them were retained in addition to Chironomidae/Diptera abundance, % Odonata and Oligochaeta richness. The two metrics selected in addition to the hironomidae/Diptera abundance, % Odonata and Oligochaeta richness were the Margalef index and the logarithm of relative abundance of sprawler. For the MMI-urban-forest, 14 metrics satisfactorily discriminated between the LIS, the MIS, and the HIS, and 12 metrics were retained and 11 proved to be redundant. The non-redundant metric was Trichoptera abundance. Three metrics were further selected in addition to the Trichoptera abundance which include % Chironomidae + Oligochaeta, Coleoptera + Hemiptera richness and Shannon diversity. The MMI-urban and MMI-urban-agric indices performed better for LIS designated stations compared to the MIS and HIS deignated stations. The developed indices proved effective as biomonitoring tools for assessing the ecological health of rivers in the urban and urban-agriculture catchments within the Niger Delta. Overall, the results of the macroinvertebrate traits and ecological preferences, and taxonomic approaches showed the strength in the complementarity of both approaches in developing biomonitoring tools for assessing levels of deterioration in riverine systems. The study contributes significantly to understanding the ecology of riverine systems in the Niger Delta, particularly those subject to urban stresses, agricultural activities and urban pollution in forested systems, and thus makes an important contribution to the science and practice of biomonitoring in Nigeria where such studies are sparse.]]> Wed 12 May 2021 17:31:44 SAST ]]> A transportation management framework for the Polokwane local municipality during Zion Christian Church (ZCC) Easter weekend pilgrimage http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:39509 Wed 12 May 2021 17:20:28 SAST ]]> Applied phylogeography : mapping the genetic resource of Honeybush across the Cape Floristic Region http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:39655 Wed 12 May 2021 17:18:59 SAST ]]> An evaluation of programme management with reference to inner -city problem buildings: The case of Nelson Mandela Bay Metropolitan Municipality ,South Africa http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:39607 Wed 12 May 2021 16:47:28 SAST ]]> An audience perception of pentecostal churches’ television programmes on star times and dstv in lagos, Nigeria http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:39070 Wed 12 May 2021 16:40:46 SAST ]]> Ecological assessment of a temperate river system using biomonitoring techniques: a case study of the Bloukrans River system, South Africa http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:38177 Wed 12 May 2021 16:20:35 SAST ]]> A personality-based surveillance model for Facebook apps http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:38447 Wed 12 May 2021 16:10:18 SAST ]]> Attention-deficit/hyperactivity disorder (ADHD) in South Africa: diagnosis and treatment from childhood to adulthood http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:39603 Wed 12 May 2021 16:01:39 SAST ]]> Attentive amelioration: developing and evaluating an applied mindfulness programme for psychologists http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:41336 Wed 12 May 2021 15:11:47 SAST ]]> A trait-based approach to identify indicators for measuring rocky reef ecosystem condition in South Africa http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:41618 Wed 12 May 2021 15:10:54 SAST ]]> Development of bio-based xylan composites for food packaging applications http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:40886 Wed 12 May 2021 15:09:39 SAST ]]> Conservation biology of an apex predator in the Anthropocene : poaching, pastoralism and lions in multi-use landscapes, South-Eastern Africa http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:40839 Wed 12 May 2021 15:08:09 SAST ]]> Exploring teaching and learning German as a foreign language at a South African institution of higher education: blended learning and collocations http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:41465 Wed 12 May 2021 15:08:05 SAST ]]> Development of Tio 2 nanostructure arrays for photonic extraction of hydrogen gas http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:41620 Wed 12 May 2021 15:05:32 SAST ]]> Commercial maritime higher education needs in South Africa http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:42111 Wed 12 May 2021 15:04:32 SAST ]]> Determination of nonlinear optical properties of phthalocyanine regioisomers using computational models http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:41337 Wed 12 May 2021 15:02:23 SAST ]]> A psychobiographical case study: Amelia Dyer in a search for glory http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:43008 Wed 12 May 2021 15:00:52 SAST ]]> Consumer behaviour regarding stock market participation in South Africa http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:42107 Wed 12 May 2021 14:58:47 SAST ]]> Diversion Programmes and Empowerment: A Case Study of Young Offenders’ Experiences in the Buffalo City Metropolitan and Amathole District Municipalities in the Eastern Cape Province of South Africa http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:42006 Wed 12 May 2021 14:58:38 SAST ]]> Contesting boundaries: a case of municipal demarcation disputes in Vuwani Vhembe District http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:42670 Wed 12 May 2021 14:58:19 SAST ]]> Conceptualisations of and responses to plagiarism in the South African higher education system http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:40963 Wed 12 May 2021 14:58:07 SAST ]]> A Strategic Model to Promote University of Choice Decisions among International Students Studying in South Africa http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:40519 Wed 12 May 2021 14:54:33 SAST ]]> Conserving land for people: transformative adaptive co-management of sustainable protected areas in the eastern Democratic Republic of Congo http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:41296 Wed 12 May 2021 14:52:01 SAST ]]> A gendered analysis of conditional cash based transfers: a case study of Puntland Technical Vocational Skills Training Programme, Somalia http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:41469 Wed 12 May 2021 14:51:15 SAST ]]> Derivative actions in contemporary company law: A comparative assessment from an enhanced accountability perspective http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:42253 Wed 12 May 2021 14:51:06 SAST ]]> A comparative analysis of the use of participatory practices by indigenous trusts and mainstream development NGOs in Zvimba Communal Area Zimbabwe http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:41437 Wed 12 May 2021 14:45:54 SAST ]]> A Strategy for good IT Governance in South African Municipalities http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:41737 Wed 12 May 2021 14:39:39 SAST ]]> Financial services use in a rural context: a case of rural communities in South Africa http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:42999 Wed 12 May 2021 14:38:56 SAST ]]> Identifying a Successful Accounting Student: Profiling of Postgraduate Accounting Students in the Eastern Cape http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:42343 Wed 12 May 2021 14:33:46 SAST ]]> Database and guide for Lesotho wool and mohair production and quality http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:41605 Wed 12 May 2021 14:32:55 SAST ]]> Design ethnography: methodological considerations for rebalancing socio-technical phenomena in CMS performativity http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:41164 Wed 12 May 2021 14:30:41 SAST ]]> An examination of practices and experiences of teacher educators in the supervision of a national early childhood home based programme http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:41695 Wed 12 May 2021 14:30:28 SAST ]]> Girls here and boys there : participatory visual methodology as pedagogy to facilitate gender sensitive practices with pre-service foundation phase teachers http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:41700 Wed 12 May 2021 14:27:03 SAST ]]> Creating Citizen-Science for Groundwater Monitoring prior to potential Shale Gas Development in Cradock (South-Eastern Karoo, South Africa) http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:40526 Wed 12 May 2021 14:26:38 SAST ]]> Conceptualising community radio: from global histories to the Kenyan example http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:41279 Wed 12 May 2021 14:24:39 SAST ]]> A housing affordability and tenure of choice quantum deliverable model in South Africa http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:41740 Wed 12 May 2021 14:22:52 SAST ]]> A framework for the implementation of e-government as a service delivery mechanism in South Africa: The case of the Eastern Cape Thusong Service Centres http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:42997 Wed 12 May 2021 14:20:47 SAST ]]> Data transport over optical fibre for ska using advanced modulation flexible spectrum technology http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:42329 Wed 12 May 2021 14:19:44 SAST ]]> Barriers to, and enablers of urban tree planting in low-cost housing areas: lessons from participatory learning processes in South Africa http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:41434 Wed 12 May 2021 14:19:11 SAST ]]> A framework for price tariffs in the costing structures of South African private hospitals http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:42167 Wed 12 May 2021 14:18:55 SAST ]]> A framework for price tariffs in the costing structures of South African private hospitals http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:40126 Wed 12 May 2021 14:18:06 SAST ]]> A scheduling model for the charging of electric vehicles in photovoltaic powered smart microgrids http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:41615 Wed 12 May 2021 14:17:26 SAST ]]> Foraging for fruits: natural resource use and its conservation potential in urban environments http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:41483 Wed 12 May 2021 14:17:23 SAST ]]> Development of a UV-tolerant strain of the South African isolate of Cryptophlebia leucotreta granulovirus for use as an enhanced biopesticide for Thaumatotibia leucotreta control on citrus http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:40885 Wed 12 May 2021 14:15:50 SAST ]]> Foraging in a dynamic environment: movement and stable isotope ecology of marine top predators breeding at the Prince Edward Archipelago http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:41596 Wed 12 May 2021 14:14:01 SAST ]]> A holistic approach in understanding the effects of dietary protein sources on the growth and reproductive development of farmed abalone, Haliotis midae http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:41506 Wed 12 May 2021 14:11:40 SAST ]]> Impact of climate finance on environmental quality in Sub-Sahara Africa http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:42206 Wed 12 May 2021 14:08:29 SAST ]]> Fraud tolerance level as a predictor of insurance claims behavior: A South African Study http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:41999 Wed 12 May 2021 14:06:30 SAST ]]> A Ranking Framework for Higher Education Institutions in South Africa http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:40746 Wed 12 May 2021 14:06:09 SAST ]]> Commercial maritime higher education needs in South Africa http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:40117 Wed 12 May 2021 14:02:44 SAST ]]> Child marriage as a hindrance to the realisation of child rights in Zimbabwe: consolidated approaches towards eradication http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:42256 Wed 12 May 2021 14:01:56 SAST ]]> An investigation of the link between Financial sector development and economic growth in Zimbabwe from 1980 -2016 http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:41814 Wed 12 May 2021 14:00:04 SAST ]]> A framework for enhancing the transgenerational potential of indigenous african family businesses http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:41168 Wed 12 May 2021 13:53:39 SAST ]]> Development of MOVPE-grown InAsSb for barrier diode applications http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:41598 150 K) a divalent acceptor is extracted with an activation energy varying between samples based on compensation in a range of 90 meV to 70 meV. Photoluminescence measurements show four peaks with recombination mechanisms linked to the native acceptor identified in literature as either the gallium antisite and/or vacant gallium site. A fifth peak observed is attributed to the longitudinal phonon of the native acceptor. InAs and InAsSb epilayer are all grown at a temperature of 600 °C and cell pressure of 600 Torr. InAs is grown at a V/III ratio of 9.5 on GaAs substrate. Photoluminescence of the InAs layer shows two distinct peaks, one of which is an extrinsic band to band recombination. The other is attributed to free electron to acceptor or a donor-acceptor pair transition. An additional weak peak is also observed which is assigned to the longitudinal phonon of the band to band. InAsSb growth was conducted under a range of V/III ratios of 4.8 to 5, with a vapour phase composition of 0.4 to 0.435. Structural analysis via X-ray diffraction showed a 6 % to 12 % solid antimony content. Photoluminescence exhibited a single broad peak for all samples, with extended band tails. Temperature and power dependant analysis of luminescence indicated a convolution of extrinsic band to tail and band to band recombinations. Hall measurements indicated the InAsSb was n-type material with an apparent measured maximum mobility at 120 K of 9.5 × 103 cm2/V.s. and a room temperature apparent mobility of 7.5 × 103 cm2/V.s. Analysis of hall results using a two-layer model calculated a true bulk mobility of the epilayer at room temperature with an increased value of 15.4 × 103 cm2/V.s. The two-layer model details the effects of the surface conduction. From photoconductivity measurements and further analysis a resultant effective lifetime, at room temperature, was found to be on same order of magnitude as that of InAs materials. Application of a single Einstein oscillator extrapolated 0 K energy gaps for two samples of solid Sb contents of 6 % and 12 %, of 354 meV and 332 meV, respectively. Finally consideration was given to the growth of aluminium containing compounds, particularly AlGaSb. Multiple phases were observed under scanning electron microscope showing growth of GaSb regions surrounded by amorphous solid aluminium and/or aluminium oxide phases. The failure of the aluminium to incorporate into the desired crystal structure is speculated to be due to impure precursor introducing oxygen into the films. Additionally, the effectiveness of the gallium precursor compared to the aluminium precursor in helping the removal of the methyl groups at the growth surface, could also promote a preference for GaSb growth.]]> Wed 12 May 2021 13:53:32 SAST ]]> Ichthyofaunal and isotope changes along the rivere-stuarine continuum in a fluvially dominated Southern African coastal system http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:40890 Wed 12 May 2021 13:53:28 SAST ]]> Conceptualisations and pedagogical practices of academic literacy in Namibian higher education http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:42807 Wed 12 May 2021 13:48:55 SAST ]]> Effect of increasing fossil shell flour levels on digestive and metabolic utilization, health, body weight change and wool production, and quality in Dohne-Merino wethers http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:42542 0.05) from wethers on 4% FSF as well. The total protein concentration, albumin, total bilirubin, Na, K, glucose, cholesterol, and liver enzymes were normal for wethers. However, serum creatinine level was lower in wethers fed on 4% FSF than those on 0% FSF (P < 0.01). Haemonchus and Coccidian fecal egg counts were low in wethers fed diets with 2%, 4%, and 6 % FSF (P < 0.01) compared 11 with wethers fed with 0% FSF inclusion level during the same period. The body condition score of wethers fed on diets with 2%, 4%, and 6% FSF inclusion levels were higher than those on 0% (P < 0.05). Wool yield, staple length, the coefficient variation of the fibre diameter, and fibre of wethers fed on diets with FSF were higher than those without FSF (P < 0.05). The fibre diameter of the wethers fed on FSF supplemented diets was the same as those on 0 % FSF (P > 0.05). The wethers spent more time on FSF supplemented diets and consumed more feed compared to that without FSF supplemented (P < 0.05). The levels of FSF inclusion in the diet affected the enteric methane output (ppm-m), where 4 % FSF had the highest enteric methane output while wethers on 2 % FSF had the lowest methane output (P < 0.05). Resting wethers produced more methane (g/day) than those feeding or standing (P < 0.05). Increasing levels of FSF did not affect ruminal temperature and pH. Ammonia-N increased with increasing FSF except in wethers fed on a diet with 4% FSF (P < 0.01). The total molar concentrations of the wethers' volatile fatty acids decreased with increasing FSF levels (P > 0.05). The acetic propionic ratio of the wethers also decreased except at a 4% inclusion level. The in vitro true digestibility dry matter (IVTDDM), in vitro true digestibility neutral detergent fibre (IVTDNDF), and in vitro true digestibility acid detergent fibre (IVTDADF) of the wethers decreased up to 4% FSF inclusion but tended to increase at 6% inclusion. This study's result as one of the pioneer studies in Dohne-Marino wethers showed that FSF treatment has the potential to improve the nutritional status of the animal and the animal performance and wool quality. Health-wise, FSF decrease nematode population and boost animal immunity as seen in RBC and WBC counts. It also can play a major role in protecting the environment, as seen in its reduction in feacal and urinary nitrogen, which is heavily involved in environmental pollution. Result also confirmed that the best period to target for methane mitigation in ruminants is the resting period. In conclusion, the inclusion of FSF in the diet of Dohne-Merino wethers has the potential to improve the overall performance, with a 4% FSF inclusion level having optimal productivity. However, future research is required to investigate FSF's effect on meat quality, rumen microbial community, in-vivo digestibility, and milk production.]]> Wed 12 May 2021 13:48:06 SAST ]]> A narrative study of students’ and staff’s experiences of living with HIV and AIDS at Rhodes University http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:42769 Tue 23 May 2023 11:45:11 SAST ]]> Household food insecurity and its association with psychological well-being of pregnant women in Ghana: the role of selected psychosocial factors http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:39286 Thu 13 May 2021 16:25:01 SAST ]]> Dynamics of stimulated luminescence in natural quartz: Thermoluminescence and phototransferred thermoluminescence http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:38509 Thu 13 May 2021 15:55:13 SAST ]]> A critical analysis of the de-peasantisation process in Nepal with specific reference to the role of state land policies since the 1950s http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:37667 Thu 13 May 2021 10:59:19 SAST ]]> A management model for human settlements: a case study of Nigeria and South Africa http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:39403 Thu 13 May 2021 08:54:11 SAST ]]> How to do things with speeches: a critical discourse analysis of military coup texts in Nigeria http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:38234 Thu 13 May 2021 07:19:35 SAST ]]> Application of machine learning, molecular modelling and structural data mining against antiretroviral drug resistance in HIV-1 http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:34282 Thu 13 May 2021 07:18:46 SAST ]]> Carnivore intra-guild competition in Selati Game Reserve, Limpopo Province, South Africa http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:34163 Thu 13 May 2021 06:59:15 SAST ]]> An analysis of how visualisation capabilities in dynamic geometric software develop meaning-making of mathematical concepts in selected Grade 11 learners http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:38211 Thu 13 May 2021 06:15:33 SAST ]]> A reappraisal of the origin of the Hotazel Fe-Mn Formation in an evolving early Earth system through the application of mineral-specific geochemistry, speciation techniques and stable isotope systematics http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:38497 Thu 13 May 2021 05:20:34 SAST ]]> Computer aided approaches against Human African Trypanosomiasis http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:38089 3000 cases and controls) are required. Macrophage migration inhibitory factor (MIF) is a cytokine that is important in both innate and adaptive immunity that has been shown to play a role in T. brucei pathogenicity using murine models. A total of 27 missense SNVs were modelled using homology modelling to create MIF protein mutants that were investigated using in silico effect prediction tools, molecular dynamics (MD), Principal Component Analysis (PCA), and Dynamic Residue Network (DRN) analysis. Our results demonstrate that mutations P2Q, I5M, P16Q, L23F, T24S, T31I, Y37H, H41P, M48V, P44L, G52C, S54R, I65M, I68T, S75F, N106S, and T113S caused significant conformational changes. Further, DRN analysis showed that residues P2, T31, Y37, G52, I65, I68, S75, N106, and T113S are part of a similar local residue interaction network with functional significance. These results show how polymorphisms such as missense SNVs can affect protein conformation, dynamics, and function. Trypanosomes are auxotrophic for folates and pterins but require them for survival. They scavenge them from their hosts. PTR1 is a multifunctional enzyme that is unique to trypanosomatids that reduces both pterins and folates. In the presence of DHFR inhibitors, PTR1 is over-expressed thus providing an escape from the effects of DHFR inhibition. Both TbPTR1 and TbDHFR are pharmacologically and genetically validated drug targets. In this study 5742 compounds were screened using molecular docking, and 13 promising binding modes were further analysed using MD simulations. The trajectories were analysed using RMSD, Rg, RMSF, PCA, Essential Dynamics Analysis (EDA), Molecular Mechanics Poisson–Boltzmann surface area (MM-PBSA) binding free energy calculations, and DRN analysis. The computational screening approach allowed us to identify five of the compounds, named RUBi004, RUBi007, RUBi014, RUBi016 and RUBi018 that exhibited antitrypanosomal growth activities against trypanosomes in culture with IC50 values of 12.5 ± 4.8 μM, 32.4 ± 4.2 μM, 5.9 ± 1.4 μM, 28.2 ± 3.3 μM, and 9.7 ± 2.1 μM, respectively. Further when used in combination with WR99210 a known TbDHFR inhibitor RUBi004, RUBi007, RUBi014 and RUBi018 showed antagonism while RUBi016 showed an additive effect. These results indicate that the four compounds might be competing with TbDHFR while RUBi016 might be more specific for TbPTR1. These compounds provide scaffolds that can be further optimised to improve their potency and specificity. Lastly, using a systematic approach we derived CHARMM force-field parameters to accurately describe the TbrPDEB1 bi-metal catalytic center. For dynamics, we employed mixed bonded and non-bonded approach. We optimised the structure using a two-layer QM/MM ONIOM (B3LYP/6-31(g): UFF). The TbrPDEB1 bi-metallic center bonds, angles, and dihedrals were parameterized by fitting the energy profiles from Potential Energy Surface (PES) scans to the CHARMM potential energy function. The parameters were validated by means of MD simulations and analysed using RMSD, Rg, RMSF, hydrogen bonding, bond/angle/dihedral evaluations, EDA, PCA, and DRN analysis. The force-field parameters were able to accurately reproduce the geometry and dynamics of the TbrPDEB1 bi-metal catalytic center during MD simulations. Molecular docking was used to identify 6 potential hits, that inhibited trypanosome growth in vitro. The derived force-field parameters were used to simulate the 6 protein-ligand complexes with the aim of elucidating crucial protein-ligand residue interactions. Using the most potent ligand RUBi022 that had an IC50 of 14.96 μM we were able to identify key residue interactions that can be of use in in silico prediction of potential TbrPDEB1 inhibitors. Overall we demonstrate how bioinformatics tools can complement current disease eradication strategies. Future work will focus on identifying variants identified in Genome Wide Association Studies and partnering with wet labs to carry out further enzyme-ligand activity relationship studies, structure determination or characterisation of appropriate protein-ligand complexes by crystallography, and site specific mutation studies]]> Thu 13 May 2021 04:20:49 SAST ]]> Exploring and modelling the effects of agricultural land management and climate change on agroecosystem services in the Eastern Cape, South Africa http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:38554 Thu 13 May 2021 03:02:27 SAST ]]> A combined modelling approach for simulating channel–wetland exchanges in large African river basins http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:35424 Thu 13 May 2021 02:53:44 SAST ]]> A psychobiography of Viktor Emil Frankl http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:39566 Thu 13 May 2021 02:43:45 SAST ]]> Activity of diverse chalcones against several targets: statistical analysis of a high-throughput virtual screen of a custom chalcone library http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:34291 Thu 13 May 2021 02:24:07 SAST ]]> An intervention on supporting teachers’ understanding of and mediation of learning of stoichiometry in selected schools in the Zambezi Region http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:32315 Thu 13 May 2021 02:16:00 SAST ]]> Designing a parental involvement programme to enhance parental engagement in the educational support programme at a disadvantaged primary school in the Nelson Mandela Bay Metropole, South Africa through participatory action research http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:39841 Thu 13 May 2021 01:37:25 SAST ]]> Between nationalism and transnationalism: entanglements of history, individual narrative, and memory in diaspora spaces in selected transnational fiction http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:37930 Thu 13 May 2021 01:30:26 SAST ]]> A best practice guideline for screening and managing chorioamnionitis http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:39575 2500g), and,therefore,most likely term gestation. Saving Babies further reported that 22.9% of all live births in South Africa was premature and 22.8% of birthswere unexplained intra-uterine deaths. Prematurity is one major complication of chorioamnionitis. When susceptibility for chorioamnionitis is considered during early pregnancy, it is possible to intervene and prevent or even reduce the incidences and complications of chorioamnionitis.A qualitative research study was conducted in three phases. In Phase One(Part One), a theoretically constructed patient scenario of chorioamnionitis was presented to ten midwives,and semi-structured individual interviews were done to elicit information regarding how they screen for and manage chorioamnionitis. In Phase One(Part Two), experienced medical practitioners in the field of obstetrics and gynaecology were individually interviewed, also using semi-structured individual interviewsto gain their views regarding chorioamnionitis as a contributing factor to maternal morbidity and mortality. Qualitative findings in Phase Oneindicated that there is a general lack of knowledge regarding chorioamnionitis among midwives, resulting ininadequate screening, misdiagnosis and mismanagement of the condition. Experienced medical practitioners confirmed that chorioamnionitis is underdiagnosed, misdiagnosed or undiagnosed and underreported,and they hold views that it is difficult to treat and control pregnancy-related infections according to current practice.An integrative literature review was conductedin Phase Twoand literature regarding diagnostic biomarkers, screening options to diagnose chorioamnionitis and management of chorioamnionitis were extracted. After evidence synthesisofPhase Oneand Phase Twodata, a best practice guidelinefor screening and managing viiwomen withchorioamnionitiswas developed usingthe National Institute for Health and Clinical Excellence guideline development approach in Phase Three. The purpose of the best practice guideline for screening and managing women with chorioamnionitis was to provide a guideline onhow to manage women who are at risk and those who present with signs and symptoms of chorioamnionitis at any stage during their pregnancy. Five recommendations were made that involve screening for chorioamnionitisand causative factors, biomarkers to diagnose chorioamnionitis, management of chorioamnionitis that includes pharmacological and non-pharmacological management, and health education to women.Ethics for this research study were guided by the ethical principles and guidelines of the Belmont Report. The trustworthiness of this research study was adopted from Ravitch and Carl,and was based on criticality, reflexivity, collaboration, and rigour. An independent coder and reviewer wereto verify the data that were included in the best practice guideline. Expert reviewersappraised the best practice guidelineusing Appraisal of Guidelines for Research and Evaluation II tools.]]> Thu 13 May 2021 01:25:46 SAST ]]> A classification of large wetlands in Africa’s elevated drylands based on their formation, structure, and hydrological functioning using Earth Observation (EO) data and Geographic Information System (GIS) http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:38100 Thu 13 May 2021 01:12:05 SAST ]]> History on trial: a study of the Salem commonage land claim http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:38545 Thu 13 May 2021 00:54:10 SAST ]]> A theory-based approach to evaluating a Continuing Teacher Professional Development Programme aimed at strengthening environment and sustainability education http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:38423 Thu 06 Jul 2023 06:51:22 SAST ]]>