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Development of health promotion guidelines for weight management among primary health care nurses in the Eastern Cape Province, South Africa

  • Authors: Monakali, Sizeka
  • Date: 2018
  • Subjects: Health promotion Body weight -- Regulation Obesity -- prevention and control
  • Language: English
  • Type: Thesis , Doctoral , Nursing
  • Identifier: http://hdl.handle.net/10353/10006 , vital:35285
  • Description: Overweight and obesity have become significant public health threats both globally and in South Africa. PHC professional nurses are first contact to patients and the community as well as key stakeholders in the management and education of obese patients. However, anecdotal evidence seems to question their suitability as good models of the advocated healthy lifestyle behaviours and weight management, as overweight and obesity is also prevalent among the professional nurses. This study examines the prevalence and determinants of overweight and obesity among PHC professional nurses in the Eastern Cape (EC) Province of South Africa. This was a workplace, cross-sectional study involving 203 PHC professional nurses conveniently selected across 41 PHC facilities in EC, South Africa. A WHO STEP wise questionnaire was used to collect demographic and behavioural data. Anthropometric (weight, height and waist circumference [WC]) measurements were taken following a standard protocol. Overweight and obesity was defined as a BMI of 25-29.9kgm-2, and BMI ≥ 30kgm-2, respectively. Seventy six percent of the nurses were obese. An additional 18 percent were overweight. Age, gender, marital status, duration of practice, alcohol use and smoking were significantly associated with obesity. There was no association between physical activity and obesity. After adjusting for confounders, only age more than 30 years (OR=5.2, 95 percentCI=1.6-16.4) and not using alcohol (OR= 4.0 95 percentCI= 1.7-9.1) were significant and independent predictors of obesity among the nurses. In conclusion is an alarmingly high prevalence of obesity among primary healthcare professional nurses in Eastern Cape, South Africa. This shows that PHC professional nurses in EC are not good models of the healthy behaviours, judge be BMI indicator, if they do advocates for healthy weight management to patients. This constitutes a future risk for an increased prevalence of chronic diseases and a handicapped healthcare workforce. There is a need to implement measures to promote healthy lifestyle behaviour and weight management among professional nurses in this setting.
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  • Date Issued: 2018

Evaluation of pharmacological properties and anti-neoplastic potentials of pelargonium iquinans and opuntia stricta extracts using acute leukemia cell lines

  • Authors: Izuegbuna, Ogochukwu Osita
  • Date: 2018
  • Subjects: Pelargoniums Medicinal plants
  • Language: English
  • Type: Thesis , Masters , M Sc
  • Identifier: http://hdl.handle.net/10353/10372 , vital:35442
  • Description: Leukaemia like other cancers is a public health issue, and coupled with the issue of drug resistance, toxicity and refractory disease novel treatments both as definitive and supportive care become necessary. The dissertation was designed to evaluate two medicinal plants (Opuntia stricta and Pelargonium inquinans) and their antineoplastic potentials. The phytochemicals analyses were done using standard methods with three different solvents (acetone, aqueous and ethanol). Vitamins analyses was also done using standard methods. The result revealed that vitamin A,C and E were present in the plants. Cell based anti-inflammatory activity were carried out using RAW264.7 macrophages cell, and COX-2 and NO expression as inflammatory markers. Cell based cytotoxicity and antineoplastic activity was investigated using RAW 264.7 macrophages cell, U937 and Jurkat cells. The results of the phytochemical analyses using GC/MS showed that phenols, flavonoids, flavonol, tannin, proanthocyanidin, saponin, alkaloids and phytate were present in these plants. In vitro antioxidant activity was carried out using nitric oxide (NO), alpha, alpha-diphenyl- β-picrylhydrazyl (DPPH), hydrogen peroxide (H2O2), phosphomolybdenum activity, and iron reducing power (FRAP) techniques. The results of the antioxidant activity showed both plants had antioxidant properties that can be attributed to the phytochemical and vitamins contents. The results showed that both plants had anti-inflammatory properties which can also be attributed to their phytochemicals. The GC-MS analysis of the essential oils of both plants showed the presence of monoterpenes, sesquiterpenes, fatty acids, and esters. The results showed that O. stricta extracts have mild cytotoxicity, while P. inquinans have strong cytotoxicity. The cell cycle analysis showed Pelargonium inquinans extracts induced G0/G1 phase arrest and cleaved caspase-3. This study has shown the antineoplastic potential of P. inquinans which may be attributed to some phytochemicals in it such as carophyllene, humulene, beta myrcene and beta pinene.
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  • Date Issued: 2018

Population ecology of Indo-Pacific bottlenose dolphins along the south-east coast of South Africa

  • Authors: Vargas-Fonseca, O. Alejandra
  • Date: 2018
  • Subjects: Bottlenose dolphin -- South Africa -- Western Cape , Bottlenose dolphin -- Ecology -- South Africa -- Western Cape Adaptation (Biology) Population biology -- Research
  • Language: English
  • Type: Thesis , Doctoral , DPhil
  • Identifier: http://hdl.handle.net/10948/36090 , vital:33890
  • Description: In this study, the genetic population structure of the Indo-Pacific bottlenose dolphin (Tursiops aduncus) was assessed across the Agulhas and Natal Bioregions of South Africa. At the same time, the abundance, distribution and habitat use of T. aduncus was investigated using boat-based surveys along 145 km of coastline from Goukamma Marine Protected Area (MPA) to Tsitsikamma MPA along the south-east coast of South Africa (Agulhas Bioregion). Tursiops aduncus habitat preferences were assessed based on locations of sightings and recorded behaviour, and compared with those of the sympatric Indian Ocean humpback dolphins (Sousa plumbea). Strong patterns of differentiation between two sub-populations of T. aduncus were identified using double digest Restriction Site Associated DNA sequencing (ddRADseq). Pairwise FST were significant (p < 0.05) between individuals from the Agulhas and Natal Bioregions and yielded values of 0.033 for all the loci. Resource requirements, specialization and differences in habitat use possibly provided sufficient isolation allowing differentiation between sub-populations of the two ecologically distinct bioregions, despite the lack of any prominent boundary to gene flow. The two identified sub-populations should each be managed as a distinct conservation unit. The abundance estimate of T. aduncus for the study area according to an open population model (POPAN) was 2,295 individuals (95% CI: 1,157 - 4,553). Although closed models were considered inappropriate, such a model was applied for the Plettenberg Bay part of the study area in isolation, to allow for comparison with a previous estimate. The comparison showed a 72.3% decrease in abundance between the two periods: from 6,997 (95% CI: 5,230 - 9,492) in 2002 - 2003 to 1,940 (95% CI: 1,448 - 2,600) in 2014 - 2016. The mean group size also declined from 120 (range: 1 - 500) to 26 (range: 1 - 100). The results highlight the importance of assessing abundance changes at other sites to inform the revision of T. aduncus conservation status in South Africa. Tursiops aduncus were encountered throughout the area. The lowest encounter rate was along rocky and exposed shorelines. These areas were, however, associated with relatively larger group sizes and greater likelihood of travelling behaviour, whereas sandy bottomed areas, where encounter rates were highest (e.g. parts of Plettenberg Bay and the Goukamma MPA), were more likely to be associated with other behaviours (e.g. foraging, socialising). There was a relatively low association of encounters with MPAs, possibly due to the fact that two of the three MPAs in the area (Tsitsikamma and Robberg) were characterised by non-preferred habitat, namely rocky shorelines. Comparison with Sousa plumbea showed similarity in habitat preferences between the species, though S. plumbea also showed an affinity for estuarine habitats. Two areas that were highly utilised by both species were located along Goukamma MPA and the north-east section in Plettenberg Bay including the Keurbooms Estuary. The latter is unprotected and a management measure could be to create a controlled-use zone to reduce disturbance to dolphins there.
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  • Date Issued: 2018

Spatial and seasonal variations of water quality determinants and pollutants as fitness-for-use and compliance assessments of the Mzimvubu catchment water resources for the proposed Mzimvubu Water Project, South Africa

  • Authors: Mutingwende, Nhamo
  • Date: 2018
  • Subjects: Water quality -- South Africa Water quality management
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10353/9308 , vital:34320
  • Description: The Department of Water Affairs as of late reported plans to build two substantial stockpiling dams in the Mzimvubu Catchment. The Mzimvubu stream basin is probably one of most prominent and undeveloped basin in South Africa. This is notwithstanding high yearly rainfall, high ecological status, high tourism potential, and appropriateness for afforestation, dryland/rainfed and water system agribusiness. Hence, the Department of Water Affairs researched the capability of building a multipurpose dam in the Mzimvubu catchment to catalyse financial and social improvement. The proposed dam will be based on the Tsitsa River. Often, scientific studies related to dam construction concentrate more on discovering the most, in fact, accessible place to construct it, than on the long haul socio-natural issues that come in its preparation. The water quality of the Tsitsa River, its tributaries and the underground drinking water sources within the Mzimvubu catchment are most likely to change once the dam wall is completed. Surface water resources are susceptible to chemical, physical, microbiological contamination and the so-called emerging pollutants either, through human or natural activities. A comprehensive baseline study on the water quality of the Mzimvubu water resources regarding traces of emerging pollutants and water quality determinants (physical, chemical and microbial) pre-dam construction is therefore essential. The objective of the water quality section of this study was to perform an in-depth analysis of water quality in the study area to form a baseline for future studies on how the built dam may affect these. The approach was to assess the spatial and seasonal variations of the pollutants (pharmaceuticals and pesticides) and water quality determinants for all water sources most likely to be affected by the development of the dam. The fitness-for-use and compliance assessments were conducted to assess if the current water resources are fit-for-use for various categories of use and if they comply with various water quality standards and guidelines as determined by the Department of Water Affairs and Forestry. Department of Water Affairs and Forestry is the overseer of South Africa's water assets, and its central goal is to keep up the fitness-for-use of water on a sustained basis. Water samples (500ml) were collected from sixteen (16) sample points, ranging from the proposed mouth of the dam to the N2 bridge point of the Tsitsa River. Points were selected where the Tsitsa River was accessible using the dam project development roads or where tributaries to the Tsitsa River were accessible using dam development roads. Taps/groundwater sources were sampled from the five selected villages. Monthly samples were collected upstream and downstream of the proposed dam wall, from June 2015 to April 2017.Seventeen (17) water quality indices were therefore analysed at sixteen sampling sites, over a two year period. The AB SCIEX TripleTOF™5600 LC/MS/MS was used to screen for pharmaceutical and pesticide pollutants. All the water quality indices were analysed using the AL400 Aqua lytic photometer, and the microbial analysis was done using the Rand Water Method Number 1.2.2.09.1 for enumerating the amount of E. coli and coliforms in the water samples (Rand Water, 2010f). The South African Water Quality Guidelines, Volumes 1 to 7 (DWS, 1996a-g) were used to assess the fitness-for-use of the water sources. To confirm the compliance of the water resources to various standards and guidelines, the water quality data were assessed against international and national guidelines and standards i.e. the WHO guideline, South African water quality guidelines (domestic, irrigation, livestock and watering, aquaculture, and aquatic ecosystems), and the SANS: 241 (2015) standard for drinking water. Non-parametric statistics were utilised to ascertain the changeability, which is a measure of how water quality may vary after some time. With non-parametric insights, the interquartile extent, which lies between the 25th and the 75th percentile, was utilised to depict inconstancy. The median value (50th percentile) was used as an indication of the central tendency or average. The 90th percentile was included as it can be used to assess the frequency of excursions into higher and possibly unacceptable water quality conditions. 3D Sigma plot was used to graphical present the spatial and seasonal variations of water quality indices and emerging pollutants against their concentrations. Fundamental statistical properties and correlations of water quality variables from the Tsitsa River, Tsitsa River tributaries and the drinking water sources were examined using SAS descriptive statistics. The water quality was determined to be of relatively sound quality, based on the comparison with guidelines and standards for the various intended uses, even though some of the water quality determinants were non-compliant and were “unacceptable” regarding fitness for purpose. The water quality of the Ntabalenga dam would most probably be affected by natural influences (for example rainfall, weathering and geological composition) and anthropogenic factors through non-point source pollution from agriculture activities, human settlements (pit latrines and open defecation) as well as industrial activities in the Maclear and Tsolo towns (wastewater treatments plants effluent, hospital effluent). The Tsitsa River had the highest number of non-compliances, especially to the World Health Organisation and Department of Water and Sanitation aquaculture guidelines. Therefore, the Tsitsa River’s water quality would be a significant factor that could compromise the water quality of the water collected in the dam. The human settlement conditions and agricultural inputs seem to be the factors contributing most to contamination of the surface water of the catchment area. The lack of sanitation systems and facilities means that community members have to use the bush and rivers for ablutions, thus contributing to microbial contamination of the environment. The direct application of manure and fertilisers on the fields by farmers further exacerbates microbial contamination and high nutrient inputs into the environment as observed in elevated microbial and phosphate contaminants during the study period. The data obtained from the analysis of pesticides and pharmaceuticals confirmed the contamination of the drinking water sources, the Tsitsa River and its tributaries with pesticides and pharmaceuticals through non-point source pollution. The origins of these pharmaceutical contaminants were identified as the pit latrines, open defecation and wastewater treatment plant effluent, while agricultural application of pesticides was identified as the source of pesticides in surface waters. If not monitored closely, the presence of these emerging pollutants will negatively affect the quality of the dam water both at spatial and temporal scales once the dam wall is completed. Pit latrines and wastewater treatment plants are a significant source of non-point source pollution. The results of this study will add to the ongoing efforts on water quality remediation by recording the spatial and seasonal variations in water quality across various water sources within the study area. The study also provides a baseline for future water quality fitness-for-use and compliance assessments. By these findings and conclusions, it is recommended that a long-term continuous monitoring programme be implemented, especially in areas where increased agricultural activities have been observed. Monitoring should be implemented for the Tsitsa River, its tributaries, and selected drinking water sources which showed the highest number of non-compliances and microbial contamination. All anthropogenic activities in the catchment areas of these sources, both upstream and downstream of the proposed dam wall, must be monitored and strictly managed to prevent and mitigate their possible impacts. Specific emphasis should be placed on agricultural development, which should be controlled to ensure sustainable livestock and cropping practises. Sanitation facilities, systems and community programmes should be put in place to minimise microbial contamination. It would be beneficial for the Department of Water and Sanitation office responsible for the Mzimvubu water resources to establish a central database for all information concerning the water quality of their water resources including the findings in this report. The database must be freely accessible to the residents of the Mzimvubu catchment.
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  • Date Issued: 2018

Assessing the role of the community radio stations in facilitating development : a case study of Forte FM in the Eastern Cape Province

  • Authors: Mawokomayi, Betina
  • Date: 2017
  • Subjects: Radio in community development -- South Africa -- Eastern Cape Community radio -- South Africa -- Eastern Cape
  • Language: English
  • Type: Thesis , Masters , MSoc
  • Identifier: http://hdl.handle.net/10353/5462 , vital:29259
  • Description: Community radio stations play an important role in the development of their communities. Forte FM is a community radio station located at University of Fort Hare Alice campus and was established to facilitate development in communities within the Amathole district municipality. Alice, a small rural town under Raymond Mhlaba Municipality, is one of the communities under the coverage of Forte FM. This study assessed the role that Forte FM plays in facilitating the development of Alice community. The study adopted a mixed method design in which questionnaires and interviews were used to collect primary data. The study findings show that although Forte FM is faced with serious financial challenges, it contributes to the development of Alice in various ways which includes providing the community with agricultural information, health information, promoting local culture, equipping the community with skills, promote local artists and sports personnel and educational programmes. The findings also revealed that the community is involved in the management of some aspects of the station’s operations through a board which is elected annually by the community itself. The results indicate that the radio station involve some community members in programming as experts on some topics or as people who have experienced an ordeal so they could share their experiences and advice other people how to manage similar situations. However, there is need to involve the community in the whole production process. The respondents’ attributed poor levels of community participation in programming to insufficient funds. The study recommends that Forte FM should lobby members of the community to fund the production of programmes since the station belongs to the community. This will enhance the sense of community ownership towards the radio station.
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  • Date Issued: 2017

Cost and return analysis of smallholder organic crop farms in the Eastern Cape province of South Africa

  • Authors: Akharume, Celestine Ohi
  • Date: 2017
  • Subjects: Farms, Small -- South Africa -- Eastern Cape Profit -- South Africa -- Eastern Cape Organic farming -- South Africa -- Eastern Cape
  • Language: English
  • Type: Thesis , Masters , MAgric
  • Identifier: http://hdl.handle.net/10353/13730 , vital:39703
  • Description: Agriculture remains an influential sector in South Africa in terms of its contributions to economic development and poverty reduction, notably in the rural areas. These include providing sufficient and affordable food for the constantly increasing population, providing cheap food for the developing industrial labor force, providing employment and livelihoods and supplying raw materials to the country’s rising domestic industrial sector. Despite phenomenal progress in integrating smallholder farmers into the mainstream economy since democratic reforms in the country, deteriorating soil quality through poor agricultural practices, land erosion, acidification and concerns about production and productivity and compliance with food safety standards are beginning to loom high. Hence, organic farming is identified as one of the sustainable approaches to farming. It is also believed to guarantee substantial net gains and to promote sustainable natural resource management with the possibility of enhancing overall agricultural productivity. Notwithstanding, organic farming is still being perceived negatively in South Africa and there is shortage of empirical studies which focus on cost and return of smallholder organic crop farms. It is in this regard that the study therefore seeks to analyze cost and return of smallholder organic crop farms in the Eastern Cape Province to contribute to knowledge on the relative economic advantages of organic agriculture at the smallholder sector. Specifically, the study profiled the socioeconomic characteristics of smallholder organic crop farmers, determined costs and returns, and estimated profitability and factors that constrain profitability of the smallholder organic crop farms. The research design used in this study was cross-sectional where data were collected at a single point in time. A multi- stage random sampling technique was used to obtain primary data from one hundred and sixty smallholder organic crop farmers (160) with the aid of structured questionnaires. Primary data were collected on demographic and socioeconomic characteristics, variable costs and fixed costs, and returns from the organic crop farms. Data collected were analyzed by Statistical Package for Social Sciences (SPSS) and the descriptive and inferential statistics involved were mean, frequency proportion, gross margin and net income analysis as well as OLS regression analysis. The results of the descriptive analysis showed that the proportions of women involved in organic crop farming were higher than that of men and many of the farmers cultivated on less than 1.0ha. The analysis of the data also showed that smallholder organic crop farms are undoubtedly profitable farm business, with attractive net farm income and lower production costs. The findings further affirmed that factors such as household size, gender, farming experience, number of years in school, farm size, source of labor and access to credit affect profitability and net farm income. Therefore, government is advised to encourage the practice of organic farming by giving short-term loans to smallholder farmers, to enable them invest more in their organic crop farms. There is also need for government to organize workshops and lectures, educating and enlightening individual smallholder organic crop farmers on modern organic farming techniques to enhance profitability of smallholder organic crop farms.
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  • Date Issued: 2017

Critical analysis of landscape and belonging in Mola, Nyaminyami District, Zimbabwe

  • Authors: Tombindo, Felix
  • Date: 2017
  • Language: English
  • Type: Thesis , Masters , MSocSc
  • Identifier: http://hdl.handle.net/10962/7533 , vital:21270
  • Description: Land and inanimate resources constitute the most dominant theme in the history of Zimbabwe. Questions around land, the environment and natural resources in Zimbabwe have recently focused on the contentious Fast Track Land Reform Programme of the year 2000. Yet Zimbabwe’s land questions are not limited to this contentious land reform programme. Among Zimbabwe’s contentious land questions are those of the Tonga people, displaced in the 1950s to pave way for the construction of the Kariba dam. These people have faced further displacement through conservation-induced restrictions on land and environmental resource use, particularly in the Zambezi Valley and specifically in areas where they were relocated after the dam-induced displacement. This thesis examines the ways in which the Tonga people of Mola in NyamiNyami District have framed their present environment to place imprints in Mola from their Zambezi landscape and to convert Mola into a landscape of home and belonging. It looks at how the Tonga in Mola use these narratives of home and belonging to claim and contest access to environmental resources in the face of an unfettered regime of displacement and restricted environmental resource use. These narratives of home are located within the context of memories of the history of Kariba dam-induced displacement and present-day environmental conservation regime practices. The thesis frames the case study of the Tonga in Mola analytically through the use of mainly a social constructionist theory of landscape and, less so, with reference to the Bourdieusian concept of habitus. It uses qualitative research methods in doing so. The thesis reveals that, for the Tonga of Mola, the environment is a complex mix of physical space (natural environment) and non-physical entities that include ancestors. Because of this, the Mola Tongan environment is multifaceted and this entails landscape as lived reality and a sacred space. The ancestors, referred to locally as banalyo gundu (meaning ‘owners of the land’), constitute a key way in which the Tonga claim belonging to Mola, Lake Kariba and the Zambezi Valley escarpment. The thesis also identifies and highlights the phenomenon of a dual belonging (attachment to two places), namely Mola and the place from which they were displaced. This exists despite the many years since their displacement for the construction of Kariba. Based on their understandings of landscape, the Tonga of Mola construct notions of belonging and entitlement to Mola and Lake Kariba that exclude and include others at the local and national levels. Overall, belonging in Mola is presented and practised as a discursive, socially constructed phenomenon that exists at local and national levels.
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  • Date Issued: 2017

A comparison of muscle fatigue responses between static and quasi-static exertions

  • Authors: Nel, Conrad
  • Date: 2016
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10962/3475 , vital:20502
  • Description: Background: This study examined localized muscle fatigue responses from sub-maximal quasi-static work protocols and additionally how it compares to purely static work. The goal was to produce research that enhances the understanding of the demands on muscles during manual work to aid in preventing injuries stemming from localized muscle fatigue. Injury rates remain a problem in manual labour sectors, particularly for the lower back and shoulder regions for the manufacturing, service and construction sectors, and for knee and elbow flexors in the sports sector. Few studies have looked at quasi-static work and what the resulting fatigue characteristics are, especially when compared to purely static or purely dynamic work. This comparison is particularly important due to the fact that risk assessment tools that are currently utilized to assess risk in the working environment are based on fatigue studies that focus on purely static or purely dynamic work. This requires attention as many working situations are neither static nor dynamic, but rather quasi-static in nature, with aspects of both dynamic and static muscle components. The scope of this study only encompasses the comparison between purely static and quasi-static work. Objectives: This study had two objectives, firstly, to determine what the fatigue characteristics of quasi-static work are and how it compares to fully static work. Secondly, to determine whether an underlying static component within an otherwise dynamic muscle force affects localized muscle fatigue compared to quasi-static work that has equal amounts of effort but with no underlying static component. Methods: Four experimental conditions were tested, each on four muscles, namely the medial deltoid, bicep brachii, bicep femoris and erector spinae muscles. To test the two objectives of this study, 16 volunteers performed a five minute fatigue protocol, that either entailed a fully static condition which involved: 1) producing a steady force at 25 percent of maximum voluntary force, 2) a quasi-static condition with fully dynamic muscle force that alternates the required force level between zero and 50 percent of maximum force, 3) a quasi-static condition with an underlying static component of five percent of maximum force, or 4) a quasi-static condition with a large underlying static component of 15 percent of maximum force. All the experimental conditions in this study had the same average workload of 25 percent of maximum voluntary force over time and thus total workload. The dependant variables of interest were ratings of perceived exertion, changes in muscle fibre recruitment (% of maximum EMG activity), maximum force and center frequency from a spectral analysis of the surface electromyography. These were measured throughout the protocols at one minute intervals to determine how muscle fatigue progressed, and how the fatigue responses differed between conditions. Results: The data from comparing fully static and quasi-static work showed that of the variables measured, the rating of perceived exertion (RPE) and maximum force data indicated that for bicep brachii and bicep femoris muscles, fully static work is more fatiguing than work that alternates between zero and 50 percent of maximum force. The results for the medial deltoid and erector spinae muscles were inconclusive. The findings regarding the comparison between quasi-static conditions with and without an underlying static component revealed that an underlying static component results in greater fatigue when compared to a quasi-static condition with no static component. The results may also suggest that a larger static component coupled with a smaller peak force results in less fatigue than a condition with a small underlying static component coupled with a higher peak force in some scenarios, provided total work is kept constant. All conditions had to have the same workload in order to be validly compared and thus the condition with a larger underlying static component had a lower peak force compared to the condition with no underlying static component or the condition with a small underlying static component. Conclusions: This study presented evidence that quasi-static work does not induce fatigue when measured by RPE and drop in maximum force in the same way as static work. Additionally, the results indicate that a larger underlying static component does not necessarily fatigue a muscle faster if the overall workload is kept constant. However, the results do suggest that any underlying static component will increase the demand on a muscle when compared to a muscle exertion with no static component. When considering the available literature on how muscles fatigue during low level static contractions, the current understanding is that the larger the force during a static contraction, the faster the onset of fatigue and decrements in performance occur. The results of this study suggest that this same relationship cannot be applied to quasi-static work where an underlying static component is part of an otherwise dynamic muscle force. Thus total workload or peak force may play a larger role than the static muscle exertion in some scenarios.
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  • Date Issued: 2016

Leopard population density and community attitudes towards leopards in and around Debshan Ranch, Shangani, Zimbabwe

  • Authors: Nyoni, Phumuzile
  • Date: 2016
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:5946 , http://hdl.handle.net/10962/d1020838
  • Description: Leopards (Panthera pardus) are regarded as one of the most resilient large carnivore species in the world and can persist in human dominated landscapes, areas with low prey availability nd highly fragmented habitats. However, recent evidence across much of their range reveals declining populations. In Zimbabwe, 500 Convention for the International Trade in Endangered Species (CITES) export tags are available annually for leopards as hunting trophies, despite limited accurate data on the leopard populations of the country. Moreover, when coupled with the massive land conversions under the controversial National Land Reform Programme (NLRP), leopard populations in Zimbabwe are in dire need of assessment. My study was conducted on Debshan ranch, Shangani, Zimbabwe, which is a commercial cattle (Bos indicus) ranch but also supports a high diversity of indigenous wildlife including an apparently healthy leopard population. However, the NLRP has resulted in an increase in small-holder subsistence farming communities around the ranch (the land was previously privately owned and divided into larger sub-units). This change in land-use means that both human and livestock densities have increased and the potential for human leopard conflict has increased. I estimated the leopard population density of the ranch and assessed community attitudes towards leopards in the communities surrounding the ranch. To estimate population densities, I performed spoor counts and conducted a camera trapping survey. Questionnaire interviews were used to assess community attitudes. My spoor counts provided a leopard density estimate of 13.57 leopards/100km2 compared to the camera trapping estimate of between 2.0 and 6.9 leopards/100km2. Although the high density estimate derived from the spoor counts is possible for Debshan because leopards are the apex predators and are adequately protected, potential edge effects are not yet fully understood. Thus, the more conservative estimate of 2.0 leopards/100km2, derived from the camera trapping survey, is probably more appropriate. Attitudes towards predators amongst respondents surrounding Debshan (n = 140) were neither too negative nor positive, attitude index had a mean score of 1.7 ± 3.8 (range: -7 – 10). No single predictor variable used in my analysis was able to adequately explain why the communities held these negative views. However, livestock losses were repeatedly listed by respondents as being one of the main reasons for their lack of tolerance towards predators. The density estimate of 2.0 leopards/100km2 translates to a population of 9 – 26 leopards within Debshan ranch. This density estimate is too low considering the habitat type at Debshan ranch but should be interpreted with caution as it lacks fundamental elements like age and sex ratio. Moreover, the interaction of the leopard population with the surrounding communities is currently unclear. As a precautionary measure, I recommended reducing the annual hunting quota for Debshan from five to one leopard. Future work should aim to improve the attitudes of the surrounding communities to secure broader landscapes for leopard conservation while also reconciling density estimates to fully understand the leopard population of the region.
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  • Date Issued: 2016

The effect of shaped nanoparticles on the photophysicochemical behaviour of metallophthalocyanines

  • Authors: D'Souza, Sarah
  • Date: 2016
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10962/529 , vital:19967
  • Description: The synthesis, spectroscopic characterization and photophysicochemical analysis of novel and known metallophthalocyanines are reported in this thesis. The novel lowsymmetry compounds were extensively studied. Selected phthalocyanines were conjugated to a variety of nanoparticles consisting of silver (AgNPs), gold (AuNPs) and zinc oxide (ZnO NPs) in order to improve their photophysical and photochemical behaviour. As with the phthalocyanines, the nanoparticles and phthalocyaninenanoparticle conjugates were thoroughly investigated. Research on the effect of the solvent used, as well as the influence of nanoparticle composition and shape on the properties of the phthalocyanines, were performed. The findings showed that there was a general increase in triplet quantum yields of the phthalocyanines in the presence of the nanoparticles. It was also noted that the use of different solvents directly affected the photophysicochemical properties. In the case of the nanoparticle conjugates, photophysical and photochemical changes were observed. Of significance were the gold nanostars, which decreased the degree of phthalocyanine aggregation in water, resulting in increased fluorescence lifetimes. The studies also revealed that the effect of the nanoparticle shape on the phthalocyanine properties was highly dependent on the nanoparticle material. The photodynamic antimicrobial activity of selected phthalocyanine-zinc oxide nanoparticle conjugates was investigated against Staphylococcus aureus (S. aureus) in solution. The phthalocyanines alone exhibited remarkable growth inhibition, however the presence of the nanoparticles in the conjugates increased the photoinactivation of S. aureus.
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  • Date Issued: 2016

Water service delivery in Harare: a willingness to pay (WTP) analysis

  • Authors: Mugomba, Lynsey M
  • Date: 2016
  • Language: English
  • Type: Thesis , Masters , MCom
  • Identifier: http://hdl.handle.net/10962/4120 , vital:20614
  • Description: In 2008-2009, Harare (Zimbabwe) was the centre of the worst cholera outbreak in Africa in the past fifteen years. A key reason cited was the lack of adequate water service delivery by the Harare City Council (HCC). Harare requires an optimum supply of 1 400 mega litres (ML) of water daily but the HCC has capacity to produce 650ML and after leakages and theft, only 400ML reaches consumers. This inadequacy compromised the hygiene of residents and forced them to resort to unsafe water sources. Coupled with a failing healthcare system, the outbreak resulted in over 4 000 deaths and further affected 100 000 people. The HCC attributes its poor service delivery to the lack of funds rendering them unable to adequately increase capacity and refurbish existing infrastructure (treatment plants and pipelines). This thesis serves to explore whether the residents of Harare (and surrounding satellite towns) would be willing to pay monthly contributions towards the USD$2.5 billion needed for various water capacity and infrastructure projects to ease the water crisis in Harare. The study analyses the water problem using a framework on the typical stages of water provision. The research also places an emphasis on the key social, economic and political factors that are contributing to the problem in Harare. Upon closer inspection, it was seen that the financial problems that the HCC is having are not only due to the economy, but poor management and transparency structures are also to blame. For various reasons, the government has largely lost its credibility with its citizens, leading some to conclude that the government’s actions reflect those of a predatory state. The contingent valuation method (willingness to pay-WTP) was used in conjunction with the dichotomous choice referendum. The binary probit model was used to help assess the degree to which different variables influenced the respondent’s decision to contribute to the needed funds. In spite of the seeming lack of trust, it was found that approximately 66.19% of the respondents were willing to pay. Amongst those willing, the mean willingness to pay amount was approximately USD$7 monthly per household.
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  • Date Issued: 2016

Counsellors’ talk about their understanding of, and practices in response to, intimate partner violence during pregnancy: a narrative-discursive analytic study.

  • Authors: Fleischack, Anne
  • Date: 2015
  • Subjects: Intimate partner violence -- South Africa , Intimate partner violence -- Psychological aspects , Abused women -- Counseling of , Pregnant women -- South Africa -- Abuse of , Pregnant women -- Counseling of
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:3255 , http://hdl.handle.net/10962/d1016391
  • Description: South Africa is a very violent society, where violence is often used as a social resource to maintain control and establish authority. Global and local research suggests that there is a high prevalence of intimate partner violence (IPV), a facet of this violence, although little research has been conducted into the effects of IPV during pregnancy in the South African non-governmental organisation (NGO) context. NGOs globally and in South Africa have attempted to address IPV and IPV during pregnancy by providing services that aim to assist (largely female) clients emotionally and logistically. In light of this phenomenon, this qualitative study presents data generated through the use of a lightly-structured narrative interview schedule. The interviews were conducted over three sessions with eight counsellors, all based at two NGOs in South Africa and experienced in counselling women who have suffered IPV and IPV during pregnancy. This study used Taylor and Littleton’s (2006) narrative-discursive analytical lens, infused with theoretical insights from Foucault about power, discourse and narrative in order to identify the discursive resources that shape the narratives that the counsellors shared in the interviews and how these translate into subject positions and (gendered) power relations of the men and women about whom they speak. Six discursive resources emerged from the narratives, namely a discourse of ‘traditional “African” culture’, ‘patriarchal masculinity’, ‘nurturing femininity’, ‘female victimhood’, ‘female survivorhood’ and ‘human rights’. These informed the three main narratives that emerged: narratives about IPV in general, IPV during pregnancy, and the counsellors’ narratives about their intervention strategies. Within these narratives (and the micro-narratives which comprised them), men were largely positioned as subscribing to violent patriarchal behaviour whilst women were mostly positioned as nurturing and victims of this violence. The counsellors also constructed women as largely ignorant of their options about IPV and IPV during pregnancy; they constructed these phenomena as problems that require intervention and identified a number of factors that indicate what successful IPV interventions should entail. In reflecting upon this analysis, this study also aimed to address the questions of what is achieved or gained by using these narratives and discursive resources, what the significance or consequences are of constructing and using these particular narratives and discourses and whether different narratives or discourses would have been possible. Recommendations for further research includes incorporating more sites as well as interviewing perpetrators and IPV survivors themselves, perhaps in their home language where relevant rather than English, to gain a broader and more faceted understanding of the dynamics surrounding IPV during pregnancy. A recommendation for practice in intervention against IPV during pregnancy is to introduce more holistic/systemic intervention strategies and working with communities to address this issue.
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  • Date Issued: 2015

Stratigraphy and sedimentology of the Msikaba formation in KwaZulu Natal South Coast, South Africa

  • Authors: Busakwe, Nolukholo Sinovuyo
  • Date: 2015
  • Subjects: Geology, Stratigraphic Sedimentology -- South Africa -- KwaZulu-Natal
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10353/2501 , vital:27877
  • Description: The Msikaba Formation is a Late Devonian fluvial and marine succession which outcrops from Hibberdene to Port Edward along the south coast of KwaZulu-Natal Province, South Africa. The Formation is composed of brownish conglomerate at the bottom and white-greyish quartz arenite sequence in the middle and mixed quartz-arenite with feldspathic sandstone in the upper sequence. Previous studies put more emphasis on the correlation of Msikaba Formation with the Natal Group and Cape Supergroup, whereas this study revised the stratigraphy, and also put new insight on the petrography, sedimentary facies, depositional environments and diagenesis of the Formation. The total stratigraphic section attains a thickness of 184 m at Margate area and 186 m at Port Edward area. The stratigraphy of Msikaba Formation is well exposed on the outcrops along the KwaZulu-Natal coastline. The stratigraphy is subdivided into 4 new members along Margate to Shelly beach section; namely Manaba Member, Uvongo Member, Mhlangeni Member and Shelly Beach Member from bottom upward. Twelve sedimentary facies were identified and the sedimentary facies were integrated into 4 facies association: Facies association 1 (Gmm+Sm) represents braided fluvial deposits, Facies association 2 (Gcm+St+Sp+Sl+Shb) represents tidal channel and tidal flat deposit, Facies association 3 (St+Sp+Sr+Sl) is result of shallow marine deposit and Facies association 4 (Sp+Sl+St+Sm) is a mixed marine and fluvial deposit. Each facies association represents a specific stratigraphic unit and were deposited in a specific sedimentary environment. Grain size analysis was conducted on seventeen thin sections and 500 grains were counted from each thin section. The sandstone grain size parameters of mean, sorting, skewness and kurtosis fell under the average of 0.75, 0.78, 0.4 and 1.2φ respectively. The results show that most of the grain size are coarse to medium grained throughout the study areas and sorting of the sandstones are moderate to poorly sorted. The cumulative frequency diagrams and bivariate plots show positive skewness and negative kurtosis, which indicate a high hydrodynamic environment. Modal composition analysis and petrography studies show that detrital components of the Msikaba Formation are dominated by monocrystalline quartz, feldspar (mostly K-feldspar) and lithic fragments of igneous and metamorphic rocks. The sandstones could be classified as quartz arenite, sub-arkosic sandstone and feldspathic litharenite; and the provenance analysis indicates that the sandstones were derived from craton interior, recycled or quartzose recycled sources which may derived from weathering and erosion of igneous and metamorphic rocks. Diagenetic processes of the Msikaba Formation have been passed through early, mid- and late diagenetic stages. Cementation, mineral conversion and compaction affect early diagenetic stage; authigenic minerals, quartz and feldspar overgrowth are presented in mid-diagenetic stage, whereas recrystallization, replacement, deformation and dissolution have been strongly affected late diagenetic stage. Microscopy, XRD and SEM-EDX studies have identified five types of cements including smectite clay, kaolinite, hematite, quartz and feldspar cements. Quartz cement, pore-filling and pore-lining clay are the major type of cements in the Msikaba Formation. Based on the lithology, sedimentary structure and facies variations, the Manaba Member was most probably deposited in a braided fluvial environment, the Uvongo Member was deposited in a tidal channel environment, the Mhlangeni Member was formed in shallow marine storm-influenced environment, whereas the Shelly Beach Member was represented mixed marine and fluvial environment. The sequence stratigraphy of Msikaba Formation constitutes a transgressive sequence from Manaba Member to Uvongo Member, whereas it ended as a regressive sequence from Mhlangeni Member to Shelly beach Member. The Msikaba Formation shows major differences with the Natal Group and Table Mountain Group (Cape Supergroup) in the lithology, stratigraphic sequence, sedimentary structures, facies system, palaeocurrent styles, fossil contents and depositional environments, which demonstrate that they are not the equivalent stratigraphic unit. Therefore, the Msikaba Formation is a separate, younger stratigraphic unit, and cannot correlate with the Natal Group and Table Mountain Group as suggested by previous researchers.
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  • Date Issued: 2015

The relationship between religion/spirituality and the general psychological well-being of the institutionalized elderly population in the Eastern Cape, South Africa

  • Authors: Walton, Karen Lynn
  • Date: 2015
  • Subjects: Psychology, Religious Psychology and religion
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10353/5708 , vital:29366
  • Description: Psychological well-being has a number of known benefits and is important for the quality of life of the elderly in particular. South Africa can be considered a religious country with the majority of citizens identifying with some religious orientation. The elderly are considered to be a more religious segment of the population, leading to a quantitative exploratory study being undertaken in order to ascertain whether a correlation exists between psychological well-being and religiosity/spirituality in the elderly institutionalised population of South Africa. The General Psychological Well-Being Scale and ASPIRES was administered to a convenience sample of 336 participants in the Eastern Cape Province. A significant but weak positive correlation was found between the variables of psychological well-being and religiosity. A difference was also found between White and African participants’ level of psychological well-being. An ANOVA was performed on the demographic information collected from participants. It was found that higher levels of education and access to private medical care were associated with higher levels of psychological well-being. A regression analysis was also performed on the data. It was found that although religiosity/spirituality does account for some of the variance, there were still a large number of other factors that influence psychological well-being in the elderly that were not captured in this study. Limitations of the study are that the results can’t be generalised to elderly residing at home. All of the participants also lived in urban areas and so differences may be found with rural elderly. Some further directions for research are discussed.
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  • Date Issued: 2015

Impact of translucent water-based acrylic paint on the thermal performance of a low cost house

  • Authors: Overen, Ochuko Kelvin
  • Date: 2014
  • Language: English
  • Type: Thesis , Masters , MSc (Physics)
  • Identifier: vital:11598 , http://hdl.handle.net/10353/d1019777
  • Description: Insulation materials are selected based on their R-value, which is a measure of the thermal resistance of a material. Therefore, the higher the R-value of a material, the better its thermal insulation performance. There are two major groups of insulation materials: bulk and reflective insulation (or combine bulk and reflective). Bulk insulation is design to resist heat transfer due to conduction and convection. Reflective insulation resists radiant heat flow due to its high reflectivity and low emissivity. Insulation materials are not restricted to these materials only. Other low thermal conductive materials can be used as long as the primary aim of thermal insulation, which is increasing thermal resistance, is achieved. Hence, the aim of the project is to investigate the insulation ability of Translucent Water-based Acrylic Paint (TWAP) on the thermal performance of Low Cost Housing (LCH). To achieve the aim of the study, the inner surfaces of the external walls of LCH was coated with TWAP. Before the inner surfaces of the external walls were coated, the following techniques were used to characterised the paint; Scanning Electron Microscopy/ Energy Dispersive X-ray spectroscopy (SEM/EDX), Fourier Transform Infra-Red (FTIR) and IR thermography. SEM/EDX was adapted to view the surface morphology and to detect the elemental composition responsible for the thermal resistance of the TWAP. FTIR spectroscopy was used to determine the functional group and organic molecular composition of the paint. The heat resistance of TWAP was analyzed using IR thermography technique. A low cost house located in the Golf Course settlement in Alice, Eastern Cape, South Africa under the Nkonkobe Municipality Eastern Cape was used as a case study in this research. The house is facing geographical N16°E, It comprises a bedroom, toilet and an open plan living room and kitchen. The house has a floor dimension of 7.20 m x 5.70 m, giving an approximate area of 41 m2. The roof is made of galvanized corrugated iron sheets with no ceiling or any form of roof insulation. The walls of the buildings are made of the M6 (0.39 m 0.19 m x 0.14 m) hollow concrete blocks, with no plaster or insulation. The following meteorological parameters were measured: temperature, relative humidity, solar irradiance, wind speed and wind direction. Eleven type-K thermocouples were used to measure the indoor temperature, inner and outer surfaces temperature of the building walls. Two sets of HMP50 humidity sensors were used to measure the indoor and outdoor relative humidity as well as the ambient temperature. The indoor temperature and relative humidity were measured at a height of 1.80 m so as to have good indoor parameter variation patterns that are not influenced by the roof temperature. The outdoor relative humidity sensor together with a 03001 wind sentry anemometer/vane and Li-Cor pyranometer were installed at a height of 0.44 m above the roof of the building. Wind speed and direction were measured by the 03001 wind sentry anemometer/vane, while solar radiation was measured by the Li-Cor pyranometer. The entire set of sensors was connected to a CR1000 data logger from which data are stored and retrieved following a setup program.
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  • Date Issued: 2014

A case study of the readability of two grade 4 natural sciences textbooks currently used in South African schools

  • Authors: Sibanda, Lucy
  • Date: 2013
  • Subjects: Science -- Study and teaching (Primary) -- Textbooks Reading comprehension -- Study and teaching (Primary) -- South Africa English language -- Textbooks for foreign speakers English language -- Study and teaching (Primary) -- Foreign speakers Education, Primary -- South Africa
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1892 , http://hdl.handle.net/10962/d1006083
  • Description: This thesis examines the readability of two grade 4 Natural Sciences textbooks currently used in South African schools. Being important sources of classroom input, particularly in grade 4 where learners are reading to learn, textbooks should be readable. That the Natural Sciences subject is only introduced in grade 4 makes the assessment of Natural Sciences textbooks at this level significant. The goal of this research therefore, is to assess the readability of two grade 4 Natural Sciences textbooks and their understandability by learners who speak English as an additional language. The goal of assessing the Natural Sciences textbooks is achieved by the use of cloze and traditional comprehension tests, classic readability formulae, textual analysis and teacher interviews. Cloze and traditional comprehension tests are used to test learners’ understanding of the textbooks and classic readability formulae are meant to assess the grade levels of the textbooks. The tests gauge learner understandability while readability formulae establish text readability. Textual analysis allows the assessment of text readability on the basis of more factors than those accommodated by readability formulae. The textual analysis also helps to identify the readability factors supporting or impeding readability. Teacher interviews are conducted to better understand the teachers’ perceptions on the readability of the Natural Sciences textbooks. The major findings of the study are that the two Natural Sciences textbooks used in the study are generally above the reading level of the intended readers, grade 4 learners and that the participating learners do not understand these textbooks. The challenges with the readability of the textbooks stem mainly from the vocabulary and concepts used in the textbooks which are not well explained.
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  • Date Issued: 2013

Investigation into the technical feasibility of biological treatment of precious metal refining wastewater

  • Authors: Moore, Bronwyn Ann
  • Date: 2013
  • Subjects: Sewage -- Purification -- Biological treatment -- South Africa Sewage -- Purification -- Activated sludge process -- South Africa Water reuse -- South Africa Flotation -- South Africa Platinum mines and mining -- Waste disposal -- South Africa Platinum mines and mining -- Economic aspects -- South Africa Mine water -- Environmental aspects -- South Africa Platinum mines and mining -- Waste minimization -- South Africa
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:3888 , http://hdl.handle.net/10962/d1002013
  • Description: The hydrometallurgical refining of platinum group metals results in large volumes of liquid waste that requires suitable treatment before any disposal can be contemplated. The wastewater streams are characterized by extremes of pH, high inorganic ion content (such as chloride), significant residual metal loads and small amounts of entrained organic compounds. Historically these effluents were housed in evaporation reservoirs, however lack of space and growing water demands have led Anglo Platinum to consider treatment of these effluents. The aim of this study was to investigate whether biological wastewater treatment could produce water suitable for onsite reuse. Bench-scale activated sludge and anaerobic digestion for co-treatment of an acidic refinery waste stream with domestic wastewater were used to give preliminary data. Activated sludge showed better water treatment at lab scale in terms of removal efficiencies of ammonia (approximately 25%, cf. 20% in anaerobic digestion) and COD (70% cf. 43% in digestion) and greater robustness when biomass health was compared. Activated sludge was consequently selected for a pilot plant trial. The pilot plant was operated on-site and performed comparably with the bench-scale system, however challenges in the clarifier design led to losses of biomass and poor effluent quality (suspended solids washout). The pilot plant was unable to alter the pH of the feed, but a two week maturation period resulted in the pH increasing from 5.3 to 7.0. Tests on algal treatment as an alternative or follow-on unit operation to activated sludge showed it not to be a viable process. The activated sludge effluent was assessed for onsite reuse in flotation and it was found that there was no significant difference between its flotation performance and that of the process water currently used, indicating the effluent generated by the biological treatment system can be used successfully for flotation. Flotation is the method whereby minerals refining operations recover minerals of interest from ore through the addition of chemicals and aeration of the ore slurry. Target minerals adhere to the bubbles and can be removed from the process.
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  • Date Issued: 2013

The coping orientation and self-esteem of black learners enrolled in under-resourced schools in the Nelson Mandela Metropole

  • Authors: Ogle, Zimbini
  • Date: 2012
  • Subjects: Educational psychology -- South Africa -- Port Elizabeth , Educational psychology -- Study and teaching -- South Africa -- Port Elizabeth , Self-esteem -- South Africa -- Port Elizabeth -- Problems, exercises, etc. , Right to education -- South Africa -- Port Elizabeth , Public schools -- South Africa -- Port Elizabeth
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:9941 , http://hdl.handle.net/10948/d1012591 , Educational psychology -- South Africa -- Port Elizabeth , Educational psychology -- Study and teaching -- South Africa -- Port Elizabeth , Self-esteem -- South Africa -- Port Elizabeth -- Problems, exercises, etc. , Right to education -- South Africa -- Port Elizabeth , Public schools -- South Africa -- Port Elizabeth
  • Description: It is common knowledge that the delivery of a high quality, well-resourced educational service to learners enrolled in state schools in the Eastern Cape has ground to a halt and this lack of service delivery has now become a pervasive problem. South African education has to a large extent failed to meet the needs of Black learners. Schools, like other contexts of childhood and adolescence are intimate places where youths construct identities, build a sense of self, read how society views them, develop the capacity to sustain relations and forge the skills to initiate change. These are the contexts where youth grow or shrink. Buildings in disrepair are not, therefore, merely a distraction; they are identity producing and selfdefining. There has been much debate on the topic of self-esteem and its relationship to school performance and academic achievement. Previous studies have highlighted that selfesteem and resilience do play a role in academic achievement. Despite the many challenges facing learners in under-resourced schools, many learners have overcome such challenges and achieved academic success. This study aimed to explore and describe the coping orientation and self-esteem of Black learners enrolled in under-resourced state schools in the Nelson Mandela Metropole. An exploratory, descriptive survey design was employed and eighty-five research participants completed the Orientation to Life Questionnaire 29 Item (OLQ 29 Item), Battle‟s Culture Free Self-Esteem Inventory Form AD (CFSEI Form AD) and a biographical questionnaire. Key findings revealed fairly high mean scores on the OLQ 29 Item and low total self-esteem scores. The General, Social and Personal self-esteem of the learners were found to be average. The results also revealed that learners with a high sense of coherence are likely to have high self-esteem; hence high sense of coherence is better explained by high self-esteem and low sense of coherence is better explained by low selfesteem.
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  • Date Issued: 2012

An interpretative phenomenological analysis of the experiences of HIV-positive lay counsellors working in the voluntary counselling and testing settings

  • Authors: Teng, James Wei Jie
  • Date: 2011
  • Subjects: HIV-positive persons Peer counseling Health counseling Health counselors -- Mental health Hiv-positive persons -- Counseling of HIV-positive persons -- Mental health HIV infections -- Psychological aspects Lay analysis (Psychoanalysis)
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:3070 , http://hdl.handle.net/10962/d1002579
  • Description: The purpose of this study was to present and understand the experiences of HIV-positive lay counsellors working in Voluntary Counselling and Testing (VCT) settings. Specifically exploring and understanding the utilisation of personal experiences within counselling encounters, the practice of peer counselling within VCT, and the challenges experienced by HIV-positive lay counsellors within VCT settings. This study, employing a qualitative interpretative phenomenological methodology required a small sample of practicing HIV-positive lay counsellors, who were selected and interviewed on their experiences utilising semi-structured interviewing. Data was analysed for meaning units, which were interpreted inductively and hermeneutically, and categorised into super-ordinate themes. Three superordinate themes within the participants’ experiences of providing VCT services were determined, namely: ‘diagnosis and disclosure experiences’, ‘peer counselling’, and ‘challenges’. This research found that the experiences of providing peer counselling depended upon identification with their client’s negative appraisal of their diagnosis experiences. Whether through empathic connections generated through the shared experience of discovering a seropositive status, or through countertransferential reactions induced through their client’s yearning for care and support. This required the counsellor to selfdisclose within counselling encounters in order to provide personal experiences of living with HIV/AIDS. Successful implementation of peer counselling provided recently diagnosed individuals with knowledge surrounding HIV/AIDS, coping skills to manage the daily physiological and psychological challenges, facilitation and adherence to treatment, social assistance, ongoing relationships, inspiring hope, and the creation of positive appraisals. However the informal utilisation of task-shifting within lay healthcare cadres, and the lack of governmental recognition for the emotional labour provided within VCT indicated that HIVpositive lay counsellors require ongoing training, support and remuneration to limit potential occupational stress, resignation, and burnout.
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  • Date Issued: 2011

Improving explanation writing skills of junior secondary learners in life sciences: a case study

  • Authors: Josua, Helena Megameno N
  • Date: 2010
  • Subjects: Writing skills English language -- Study and teaching (Secondary) -- South Africa English language -- Writing -- Study and teaching
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1570 , http://hdl.handle.net/10962/d1003452
  • Description: Learners in the Junior Secondary Phase (Grades 8 to 10) are often required to answer open-ended questions which require a response in the form of an explanation. As frequently reported in the external examiners' reports of Life Sciences, learners do not write adequate explanations as responses to explanatory questions. This thesis reports on action research based on my experience as a Life Sciences teacher trying to address this problem. Therefore, the purpose of this study was to develop suitable, manageable and effective strategies that I could implement in order to improve my teaching of explanation writing skills of in the Junior Secondary school learners with a view to enhance curriculum content knowledge in Life Sciences. The intervention was carried out in a Grade 10 Life Sciences class which consisted of 35 learners. The first cycle consisted of seven lessons carried out over two weeks in normal school time. The main sources of data from my lesson interventions were the learners' written work, their journal entries, the researcher's journal, the field notes from the non-participant observer and interviews with two focus groups. Both the interviews and the lessons were recorded and transcribed. The research data reveals that the ability of the Junior Secondary learners to write explanations was hindered by language problems. In addition, a lack of integration of language issues into the subject content was a contributing factor to their inadequate writing skills. Spelling errors and lack of expression in English second language contribute to the problem of writing good explanations. The data has also revealed that learners‟ writing skills can be improved by implementing suitable teaching strategies, such as the curriculum cycle as proposed by Gibbons (2002). The curriculum cycle can be modified to fit the learners' needs and the real teaching situation. The amount of practice required to master the skill of writing in the genre of explanations should be considered.
  • Full Text:
  • Date Issued: 2010
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