A study of the geology of the Vaalbank and Lady Frere areas in the Karoo Basin of South Africa using gravity, magnetic and gamma-ray spectrometry data: implications of groundwater potential
- Khalimashe, Sinesihle, Gwavava, Oswald
- Authors: Khalimashe, Sinesihle , Gwavava, Oswald
- Date: 2020
- Subjects: Gamma ray astronomy
- Language: English
- Type: Thesis , Masters , MSc (Geology)
- Identifier: http://hdl.handle.net/10353/11983 , vital:39124
- Description: The Vaalbank and Lady Frere areas belong to the Elliot, Molteno and Burgersdorp Formations, that are part of the sedimentary succession of the Beaufort Group in the Karoo Basin of South Africa. There is Quaternary alluvium covering the mudstone, sandstone and shale rocks of the Beaufort Group. Dolerite and gabbro sills of the Karoo age have intruded the whole area. A number of investigations were carried out for the study namely field observations, petrographic, X-ray diffraction, airborne gamma-ray spectrometry, aeromagnetic and gravity analyses. Twenty four rock samples were collected in the field from fresh outcrops of the Karoo dolerites, Burgersdorp and Molteno formations. The measured densities and porosities show that the Karoo dolerite suite has the highest average dry density of 2.771 g/cm3 and the lowest average porosity of 3%. The Burgersdorp Formation has an intermediate average density of 2.458 g/cm3 and an intermediate average porosity of 5.4%. The Molteno Formation has the lowest average density of 2.190 g/cm3 and the highest average porosity of 14.5%. Petrographic and geochemical investigations were carried on 19 rocks samples collected in the field to determine the mineralogy character using microscopic and XRD analyses. Both petrographic and X-ray diffraction analyses revealed that the sandstones of the study area are composed of quartz as their primary mineral and feldspars as the secondary mineral. The dolerite consists of euhedral structured minerals such as magnetite, pyroxene, plagioclase and amphibole. The gamma ray maps show high spectrometric values are associated with the Burgersdorp Formation, alluvium cover and dolerite dykes. The low spectrometric values are associated with dolerite sills and ring complexes. The boundaries of the sill/ring complexes are clearly delineated by the K/U ratio and ternary maps. The magnetic maps show ring like patterns of magnetic high anomalies that are due to the sills/ring complexes whilst the numerous, narrow, linear magnetic highs are due to faults and dolerite dyke swarms. The majority of the dykes trend in a NW-SE direction and a few dykes are in a NE-SE direction. The magnetic power spectrum indicates four depths of the magnetic sources at average depths of 0.13 km, 1.60 km, 2.83 km and 12.40 km. The magnetic depth iii slices maps show that both the circular/ring like and linear anomalies extend from shallow to deeper depth of 12.4 km. The gravity map is dominated by a long wavelength gravity anomaly that increases from about -120 mGals in the northwestern corner of the study area to -110 mGals in the southeastern corner of the study area. Results from 2½D gravity modelling show that this long wavelength anomaly is due to a horizontal Moho at a depth of 47 km in the study area, which shallows outside the study area near the coast. Superimposed on it are short wavelength gravity anomalies due to low density sediments and high density dolerite intrusions. The simple 2½D models generated from five profiles traversing the study area reveal that the sediments of the Karoo Supergroup extend from the surface down to a depth 5 km below sea level attaining a maximum thickness of about 6½ km. These sediments are dykes, sills and ring complexes. The dykes and sills/ring complexes identified from gamma ray spectrometry, magnetic and gravity data results are likely to be associated with fractures, joints, cracks and fissures in the host rocks, which form preferential pathways for groundwater transmission. Hence, they could be suitable targets for groundwater.
- Full Text:
- Date Issued: 2020
- Authors: Khalimashe, Sinesihle , Gwavava, Oswald
- Date: 2020
- Subjects: Gamma ray astronomy
- Language: English
- Type: Thesis , Masters , MSc (Geology)
- Identifier: http://hdl.handle.net/10353/11983 , vital:39124
- Description: The Vaalbank and Lady Frere areas belong to the Elliot, Molteno and Burgersdorp Formations, that are part of the sedimentary succession of the Beaufort Group in the Karoo Basin of South Africa. There is Quaternary alluvium covering the mudstone, sandstone and shale rocks of the Beaufort Group. Dolerite and gabbro sills of the Karoo age have intruded the whole area. A number of investigations were carried out for the study namely field observations, petrographic, X-ray diffraction, airborne gamma-ray spectrometry, aeromagnetic and gravity analyses. Twenty four rock samples were collected in the field from fresh outcrops of the Karoo dolerites, Burgersdorp and Molteno formations. The measured densities and porosities show that the Karoo dolerite suite has the highest average dry density of 2.771 g/cm3 and the lowest average porosity of 3%. The Burgersdorp Formation has an intermediate average density of 2.458 g/cm3 and an intermediate average porosity of 5.4%. The Molteno Formation has the lowest average density of 2.190 g/cm3 and the highest average porosity of 14.5%. Petrographic and geochemical investigations were carried on 19 rocks samples collected in the field to determine the mineralogy character using microscopic and XRD analyses. Both petrographic and X-ray diffraction analyses revealed that the sandstones of the study area are composed of quartz as their primary mineral and feldspars as the secondary mineral. The dolerite consists of euhedral structured minerals such as magnetite, pyroxene, plagioclase and amphibole. The gamma ray maps show high spectrometric values are associated with the Burgersdorp Formation, alluvium cover and dolerite dykes. The low spectrometric values are associated with dolerite sills and ring complexes. The boundaries of the sill/ring complexes are clearly delineated by the K/U ratio and ternary maps. The magnetic maps show ring like patterns of magnetic high anomalies that are due to the sills/ring complexes whilst the numerous, narrow, linear magnetic highs are due to faults and dolerite dyke swarms. The majority of the dykes trend in a NW-SE direction and a few dykes are in a NE-SE direction. The magnetic power spectrum indicates four depths of the magnetic sources at average depths of 0.13 km, 1.60 km, 2.83 km and 12.40 km. The magnetic depth iii slices maps show that both the circular/ring like and linear anomalies extend from shallow to deeper depth of 12.4 km. The gravity map is dominated by a long wavelength gravity anomaly that increases from about -120 mGals in the northwestern corner of the study area to -110 mGals in the southeastern corner of the study area. Results from 2½D gravity modelling show that this long wavelength anomaly is due to a horizontal Moho at a depth of 47 km in the study area, which shallows outside the study area near the coast. Superimposed on it are short wavelength gravity anomalies due to low density sediments and high density dolerite intrusions. The simple 2½D models generated from five profiles traversing the study area reveal that the sediments of the Karoo Supergroup extend from the surface down to a depth 5 km below sea level attaining a maximum thickness of about 6½ km. These sediments are dykes, sills and ring complexes. The dykes and sills/ring complexes identified from gamma ray spectrometry, magnetic and gravity data results are likely to be associated with fractures, joints, cracks and fissures in the host rocks, which form preferential pathways for groundwater transmission. Hence, they could be suitable targets for groundwater.
- Full Text:
- Date Issued: 2020
A study of the implementation of public policy to increase participation in recreation sports in Lagos state: Nigeria
- Setonji, Noel Adeoye https://orcid.org/0000-0002-2101-8037
- Authors: Setonji, Noel Adeoye https://orcid.org/0000-0002-2101-8037
- Date: 2013-04
- Subjects: Public administration
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/24035 , vital:62301
- Description: The study investigated the extent to which implementation of the current public policy had improved recreation sport services and participation in Lagos metropolis of Lagos State-Nigeria. The study was delimited to 14 out of 16 Local Governments in Lagos metropolis. The study participants were 650 (334 males and 316 females) selected from 14 Local Governments in Lagos metropolis. Stratified random sampling technique was applied to get the volunteered metropolitan Lagos Local Government staff participants used for the study. Mixed research approaches involving quantitative and qualitative data collection were employed to carry out the study. Pilot study was carried out and reliability of each instrument was established with Cronbach’s alpha and test-re-test after an interval of two weeks. The reliability coefficients based on Pearson’s Product Moment Correlation were PRSPIQ (0.89), PRSPIBQ (0.87), RSFQ (0.79), and EPIMCEQ (0.85). The quantitative data collected were entered into Microsoft Excel 2007 Software and later exported to SPSS 18.0 statistical package for data analysis. Simple frequencies of responses in % and factor analysis were used in analysing the data collected, while Chi-square test of goodness-of-fit was used to test all the four hypotheses. The interview data collected were analysed using inductive method. All the hypotheses were pitched at 0.05 confidence level. Results of the study revealed that: implementation of the current public policy had not significantly improved recreation sport services and participation in Lagos metropolis: x2 (4, N = 650) = 395000, p<.0001, was significant at p<0.05); Barriers had affected effective implementation of the current public recreation sports policy in Lagos metropolis: x2 (4, N = 650) = 38.6000, p<.0001, was significant at p<0.05); implementation of the current public policy had not improved recreation sport facilities and safe recreation environments in Lagos metropolis: x2 (4, N = 650) = 33.3000, p<.0001, was significant at p<0.05; implementation of the current public policy had not effectively enhanced management competencies of recreation sport officers in Lagos metropolis: x2 (4, N = 650) = 64.3000, p<.0001, was significant at p<0.05. The conclusions drawn from the findings of the study include: the current public policy had not significantly improved recreation sport services in Lagos metropolis. Specifically, the study found that: the current policy had not done enough to enhance increased participation in recreation sport activities in Lagos metropolis; barriers had affected effective implementation of the current public recreation sports policy in Lagos metropolis; the public policy had not done enough to improve recreation sport facilities and safe recreation environments in most parts of Lagos metropolis; and the current public policy had not effectively enhanced management competencies of public recreation sport officers in Lagos metropolis. The study findings had it too that to effectively implement public recreation sports policy in Lagos metropolis, stakeholders should be adequately involved in the implementation activities. Based on the study findings, the study among others recommends that the State Government should be: proactive to update the content of the current public policy on recreation sports as the needs of the users are increasingly changing over time; Government agents, private organizations, recreation sport professionals and community stakeholders should be actively involved in the implementation processes to forestall any barriers; more recreation facility pools in safe and conducive environments should be provided and assessable to increase participation in recreation sports by the people of Lagos metropolis; and the public policy should be effectively implemented to enhance management competencies of public recreation sport managers in Lagos metropolis. , Thesis (PhD) -- Faculty of Management and Commerce, 2013
- Full Text:
- Date Issued: 2013-04
- Authors: Setonji, Noel Adeoye https://orcid.org/0000-0002-2101-8037
- Date: 2013-04
- Subjects: Public administration
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/24035 , vital:62301
- Description: The study investigated the extent to which implementation of the current public policy had improved recreation sport services and participation in Lagos metropolis of Lagos State-Nigeria. The study was delimited to 14 out of 16 Local Governments in Lagos metropolis. The study participants were 650 (334 males and 316 females) selected from 14 Local Governments in Lagos metropolis. Stratified random sampling technique was applied to get the volunteered metropolitan Lagos Local Government staff participants used for the study. Mixed research approaches involving quantitative and qualitative data collection were employed to carry out the study. Pilot study was carried out and reliability of each instrument was established with Cronbach’s alpha and test-re-test after an interval of two weeks. The reliability coefficients based on Pearson’s Product Moment Correlation were PRSPIQ (0.89), PRSPIBQ (0.87), RSFQ (0.79), and EPIMCEQ (0.85). The quantitative data collected were entered into Microsoft Excel 2007 Software and later exported to SPSS 18.0 statistical package for data analysis. Simple frequencies of responses in % and factor analysis were used in analysing the data collected, while Chi-square test of goodness-of-fit was used to test all the four hypotheses. The interview data collected were analysed using inductive method. All the hypotheses were pitched at 0.05 confidence level. Results of the study revealed that: implementation of the current public policy had not significantly improved recreation sport services and participation in Lagos metropolis: x2 (4, N = 650) = 395000, p<.0001, was significant at p<0.05); Barriers had affected effective implementation of the current public recreation sports policy in Lagos metropolis: x2 (4, N = 650) = 38.6000, p<.0001, was significant at p<0.05); implementation of the current public policy had not improved recreation sport facilities and safe recreation environments in Lagos metropolis: x2 (4, N = 650) = 33.3000, p<.0001, was significant at p<0.05; implementation of the current public policy had not effectively enhanced management competencies of recreation sport officers in Lagos metropolis: x2 (4, N = 650) = 64.3000, p<.0001, was significant at p<0.05. The conclusions drawn from the findings of the study include: the current public policy had not significantly improved recreation sport services in Lagos metropolis. Specifically, the study found that: the current policy had not done enough to enhance increased participation in recreation sport activities in Lagos metropolis; barriers had affected effective implementation of the current public recreation sports policy in Lagos metropolis; the public policy had not done enough to improve recreation sport facilities and safe recreation environments in most parts of Lagos metropolis; and the current public policy had not effectively enhanced management competencies of public recreation sport officers in Lagos metropolis. The study findings had it too that to effectively implement public recreation sports policy in Lagos metropolis, stakeholders should be adequately involved in the implementation activities. Based on the study findings, the study among others recommends that the State Government should be: proactive to update the content of the current public policy on recreation sports as the needs of the users are increasingly changing over time; Government agents, private organizations, recreation sport professionals and community stakeholders should be actively involved in the implementation processes to forestall any barriers; more recreation facility pools in safe and conducive environments should be provided and assessable to increase participation in recreation sports by the people of Lagos metropolis; and the public policy should be effectively implemented to enhance management competencies of public recreation sport managers in Lagos metropolis. , Thesis (PhD) -- Faculty of Management and Commerce, 2013
- Full Text:
- Date Issued: 2013-04
A study of the prevalence of refractive errors and of patients requring refractive services at 15 eye clinics in the Amathole, Chris Hani, Joe Gqabi and O. R. Tambo districts of the Eastern Cape
- Authors: Webber, Fiona
- Date: 2012
- Subjects: Eye -- Refractive errors -- South Africa -- Eastern Cape , Cataract -- Surgery -- South Africa -- Eastern Cape , Refractive keratoplasty -- South Africa -- Eastern Cape , Community health services -- South Africa -- Eastern Cape , Eye -- Diseases -- South Africa -- Eastern Cape , Optometry -- South Africa -- Eastern Cape , Eyeglasses -- South Africa -- Eastern Cape , Nurses -- In-service training -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc (Nursing Science)
- Identifier: vital:11900 , http://hdl.handle.net/10353/d1001100 , Eye -- Refractive errors -- South Africa -- Eastern Cape , Cataract -- Surgery -- South Africa -- Eastern Cape , Refractive keratoplasty -- South Africa -- Eastern Cape , Community health services -- South Africa -- Eastern Cape , Eye -- Diseases -- South Africa -- Eastern Cape , Optometry -- South Africa -- Eastern Cape , Eyeglasses -- South Africa -- Eastern Cape , Nurses -- In-service training -- South Africa -- Eastern Cape
- Description: This is a study on the prevalence of refractive errors and patients requiring refractive services at 15 eye clinics in the Amathole, Chris Hani, Joe Gqabi and OR Tambo District Municipalities of the Eastern Cape. This is an area characterised by extreme poverty where the cost of an eye examination and prescription spectacles remains financially unobtainable for most. Optometry services are provided mainly by private optometrists who service the small proportion of the population that can afford them. Adults and children remain house bound or are labelled as dull and unproductive simply because they don’t have access to an eye examination and a pair of spectacles. Purpose The purpose of the study is to identify patients with refractive errors and those requiring refractive services at the 15 eye clinics in the Eastern Cape. Another purpose is to describe the refractive services that are available to patients attending health facilities, where the eye clinics are conducted. Lastly, the purpose is to explore the possibility of nurses providing refractive services independently or under the supervision of optometrists to supplement the lack to refracting and dispensing services. Study Method A quantitative and qualitative non-experimental descriptive design was used. Research involved the analysis of Vision Care’s eye clinic records collected from 15 eye clinics from January 2010-June 2010. Semi-structured interviews were conducted with 30 nurses working at the 15 health facilities where the eye clinics were conducted using purposive sampling. The quantitative data was analysed using excel spreadsheets and graphs and qualitative data was analysed using coding and categorizing methods. Conclusion According to Vision Care’s data of the patients assessed, 19.2 percent had a refractive error and 54 percent of the patients required refractive services. It is estimated that 71.41 percent of the patients had a refractive error according to the optometrist. Although there were some organisations active in the eradication of cataracts, there was little healthcare available in the form of refraction services. xiv Patients needed to travel an average of 63.8kms to access refraction services against the backdrop of poor roads, poverty and unemployment. 28 out of 30 nurses either ‘strongly agreed’ or ‘agreed’ that nurses could be trained to perform refractions and dispense spectacles. 29 out of 30 nurses thought that this would have a positive impact on eye care. Further research is necessary to assess the feasibility of implementing a nurse operated refractive program and whether it should be within their scope of practice to refract and dispense spectacles.
- Full Text:
- Date Issued: 2012
- Authors: Webber, Fiona
- Date: 2012
- Subjects: Eye -- Refractive errors -- South Africa -- Eastern Cape , Cataract -- Surgery -- South Africa -- Eastern Cape , Refractive keratoplasty -- South Africa -- Eastern Cape , Community health services -- South Africa -- Eastern Cape , Eye -- Diseases -- South Africa -- Eastern Cape , Optometry -- South Africa -- Eastern Cape , Eyeglasses -- South Africa -- Eastern Cape , Nurses -- In-service training -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc (Nursing Science)
- Identifier: vital:11900 , http://hdl.handle.net/10353/d1001100 , Eye -- Refractive errors -- South Africa -- Eastern Cape , Cataract -- Surgery -- South Africa -- Eastern Cape , Refractive keratoplasty -- South Africa -- Eastern Cape , Community health services -- South Africa -- Eastern Cape , Eye -- Diseases -- South Africa -- Eastern Cape , Optometry -- South Africa -- Eastern Cape , Eyeglasses -- South Africa -- Eastern Cape , Nurses -- In-service training -- South Africa -- Eastern Cape
- Description: This is a study on the prevalence of refractive errors and patients requiring refractive services at 15 eye clinics in the Amathole, Chris Hani, Joe Gqabi and OR Tambo District Municipalities of the Eastern Cape. This is an area characterised by extreme poverty where the cost of an eye examination and prescription spectacles remains financially unobtainable for most. Optometry services are provided mainly by private optometrists who service the small proportion of the population that can afford them. Adults and children remain house bound or are labelled as dull and unproductive simply because they don’t have access to an eye examination and a pair of spectacles. Purpose The purpose of the study is to identify patients with refractive errors and those requiring refractive services at the 15 eye clinics in the Eastern Cape. Another purpose is to describe the refractive services that are available to patients attending health facilities, where the eye clinics are conducted. Lastly, the purpose is to explore the possibility of nurses providing refractive services independently or under the supervision of optometrists to supplement the lack to refracting and dispensing services. Study Method A quantitative and qualitative non-experimental descriptive design was used. Research involved the analysis of Vision Care’s eye clinic records collected from 15 eye clinics from January 2010-June 2010. Semi-structured interviews were conducted with 30 nurses working at the 15 health facilities where the eye clinics were conducted using purposive sampling. The quantitative data was analysed using excel spreadsheets and graphs and qualitative data was analysed using coding and categorizing methods. Conclusion According to Vision Care’s data of the patients assessed, 19.2 percent had a refractive error and 54 percent of the patients required refractive services. It is estimated that 71.41 percent of the patients had a refractive error according to the optometrist. Although there were some organisations active in the eradication of cataracts, there was little healthcare available in the form of refraction services. xiv Patients needed to travel an average of 63.8kms to access refraction services against the backdrop of poor roads, poverty and unemployment. 28 out of 30 nurses either ‘strongly agreed’ or ‘agreed’ that nurses could be trained to perform refractions and dispense spectacles. 29 out of 30 nurses thought that this would have a positive impact on eye care. Further research is necessary to assess the feasibility of implementing a nurse operated refractive program and whether it should be within their scope of practice to refract and dispense spectacles.
- Full Text:
- Date Issued: 2012
A study of the selected wild edible plants utilized by indigenous people of the Amathole District in the Eastern Cape Province of South Africa
- Kwinana-Mandindi, Thozama Ndileka
- Authors: Kwinana-Mandindi, Thozama Ndileka
- Date: 2012
- Subjects: Wild plants, Edible http://id.loc.gov/authorities/subjects/sh85146686
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/19598 , vital:43147
- Description: Wild edible plants are an indispensible part of diets in some of the poor resourced rural societies. In many less resourced households a main meal comprises of a starch staple which is accompanied by a supplement of vegetables that provide the other nutritional elements as well as flavour to the meals. The vegetable relish (isishebo) thus, becomes an important component of the diet. The sustenance of many such resource poor indigenous societies over many generations has been as a result of their reliance on a readily available supply of their nutritional requirements, where edible wild plants formed the major food source. Wild edible plants provided the most important source of nutritional supply even during times of drought and famine. However, lifestyle changes have caused a serious reduction of the gathering and use of the wild edible vegetables, knowledge about them and the local culture are also lost with them. Unfortunately, others have come to regard their traditional food resource base as primitive and inferior and have come to rely on new exotic food plant whose supply is unstable and narrow compared to the wide variety of wild edible plants. Even when drought challenges play destruction with food availability, resulting in food shortages due to the reliance on cultivated crops that are poorly adapted to local conditions, communities cannot go back to the unknown food plants. However, detailed scientific investigations are needed to understand and preserve wild food uses. This study was undertaken to add to that body of knowledge. It started with an ethnobotanic survey of the use of wild food plants in 10 selected rural villages and peri-urban dwellings in the Amathole District of the Eastern Cape. These rural areas were chosen because of the belief that there are still individuals who possess the wealth of traditional knowledge within those remote areas in addition to that the villages are surrounded by indigenous vegetation from which they could be harvesting some indigenous food plants. Furthermore, the relationship between people and plants are often clearer in indigenous/traditional societies since the link between production and consumption is more direct. Besides the survey, this research employed various methods including Inductively Coupled Argon (ICP) analyses of minerals and vitamins, determination of phytochemicals and antioxidant/bio-activity that of, higher performance liquid chromatography (HPLC) determination of other vitamins, assessment of proximate and anti-nutrient compositions of raw and cooked samples of plants, scanning electron microscopy (SEM) and energy dispersive x-ray spectroscopy (EDXS) to look into the micro-morphology of leaves for details that might have a bearing in the nutrient composition of the wild edible vegetables. This was done with the aim to explore and highlight the wild-food-plant base of indigenous people, to investigate the nutritional value of the selected frequently consumed wild vegetables and to recommend ways of educating people on the value of such plants and the need to promote their continued sustainable use as well as preservation of them for the benefit of people who cannot afford a continuous nutritious meal particularly among rural communities. Twenty-five (25) indigenous wild food plants which included leafy vegetables, nuts and fruits species were identified as being arbitrarily gathered and utilised as food, of which seven wild leafy vegetable species were often mentioned as common among the 15 dwellings surveyed and most frequently consumed by the respondents. Two additional plants were also frequently used as flavoring and in their raw state respectively. Wild edible vegetables were mainly eaten boiled as ‘laxa’, mixed with maize meal as ‘imifino’, fried as relish ‘isishebo’ or raw for both snacking purposes and medicinal functions. Wild edible plant species in the Amathole District of the Eastern Cape-South Africa were documented with respect to their uses and knowledge or identification. Four indigenous wild vegetables (Chenopodium album, Solanum nigrum/nodiflorum, Amaranthus dubius and Urtica lobulata) frequently consumed by the indigenous communities in the study region were selected. All the plant species had a remarkably high content of pro-anthocyanidins (between 58.42 and 65.18 mg/g) and also exhibited high radical scavenging activity in vitro. S. nigrum and C. album were found to be rich sources of ascorbic acid, having 1.05mg/100g and 1.01mg/100g, respectively. The entire wild, traditionally edible plants contain reasonably good concentrations of riboflavin while U. lobulata was found to contain maximum amount of thiamine. All plant species were rich sources of minerals and vitamins (both water soluble and fat soluble). Appropriate cooking methods are to be used to enhance the bio-availability of vitamins and nutrients in general. Cooking generally improved the nutritive value in certain wild vegetables. However, some nutrients were drained away. For example micro-nutrient and anti-nutrient component in the ash were reduced in cooking. The EDXS analysis has shown that the indigenous, wild vegetables in the Amathole District of South Africa are excellent sources of minerals, while the mineral crystals present at the level of the mesophyll of the indigenous wild vegetables were probably mixtures of calcium oxalate, calcium sulphate and silica. Saponin, tannins, oxalates, phytates and alkaloids are present in all the indigenous wild vegetables, but in minimal safe quantities. Nutritional analysis of some wild food plants demonstrates that in many cases the nutritional quality of the plants is comparable and in some cases even superior to domesticated exotic varieties. Knowledge about gathering and use of some wild food species is common among the rural dwellers. However, most uses are known by few elderly informants only. Education, awareness campaigns and revival of use of wild edible plants directed at the youth particularly is essential and this can be done through all forms of media. , Thesis (PhD) (Ethnobotany) -- University of Fort Hare, 2012
- Full Text:
- Date Issued: 2012
- Authors: Kwinana-Mandindi, Thozama Ndileka
- Date: 2012
- Subjects: Wild plants, Edible http://id.loc.gov/authorities/subjects/sh85146686
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/19598 , vital:43147
- Description: Wild edible plants are an indispensible part of diets in some of the poor resourced rural societies. In many less resourced households a main meal comprises of a starch staple which is accompanied by a supplement of vegetables that provide the other nutritional elements as well as flavour to the meals. The vegetable relish (isishebo) thus, becomes an important component of the diet. The sustenance of many such resource poor indigenous societies over many generations has been as a result of their reliance on a readily available supply of their nutritional requirements, where edible wild plants formed the major food source. Wild edible plants provided the most important source of nutritional supply even during times of drought and famine. However, lifestyle changes have caused a serious reduction of the gathering and use of the wild edible vegetables, knowledge about them and the local culture are also lost with them. Unfortunately, others have come to regard their traditional food resource base as primitive and inferior and have come to rely on new exotic food plant whose supply is unstable and narrow compared to the wide variety of wild edible plants. Even when drought challenges play destruction with food availability, resulting in food shortages due to the reliance on cultivated crops that are poorly adapted to local conditions, communities cannot go back to the unknown food plants. However, detailed scientific investigations are needed to understand and preserve wild food uses. This study was undertaken to add to that body of knowledge. It started with an ethnobotanic survey of the use of wild food plants in 10 selected rural villages and peri-urban dwellings in the Amathole District of the Eastern Cape. These rural areas were chosen because of the belief that there are still individuals who possess the wealth of traditional knowledge within those remote areas in addition to that the villages are surrounded by indigenous vegetation from which they could be harvesting some indigenous food plants. Furthermore, the relationship between people and plants are often clearer in indigenous/traditional societies since the link between production and consumption is more direct. Besides the survey, this research employed various methods including Inductively Coupled Argon (ICP) analyses of minerals and vitamins, determination of phytochemicals and antioxidant/bio-activity that of, higher performance liquid chromatography (HPLC) determination of other vitamins, assessment of proximate and anti-nutrient compositions of raw and cooked samples of plants, scanning electron microscopy (SEM) and energy dispersive x-ray spectroscopy (EDXS) to look into the micro-morphology of leaves for details that might have a bearing in the nutrient composition of the wild edible vegetables. This was done with the aim to explore and highlight the wild-food-plant base of indigenous people, to investigate the nutritional value of the selected frequently consumed wild vegetables and to recommend ways of educating people on the value of such plants and the need to promote their continued sustainable use as well as preservation of them for the benefit of people who cannot afford a continuous nutritious meal particularly among rural communities. Twenty-five (25) indigenous wild food plants which included leafy vegetables, nuts and fruits species were identified as being arbitrarily gathered and utilised as food, of which seven wild leafy vegetable species were often mentioned as common among the 15 dwellings surveyed and most frequently consumed by the respondents. Two additional plants were also frequently used as flavoring and in their raw state respectively. Wild edible vegetables were mainly eaten boiled as ‘laxa’, mixed with maize meal as ‘imifino’, fried as relish ‘isishebo’ or raw for both snacking purposes and medicinal functions. Wild edible plant species in the Amathole District of the Eastern Cape-South Africa were documented with respect to their uses and knowledge or identification. Four indigenous wild vegetables (Chenopodium album, Solanum nigrum/nodiflorum, Amaranthus dubius and Urtica lobulata) frequently consumed by the indigenous communities in the study region were selected. All the plant species had a remarkably high content of pro-anthocyanidins (between 58.42 and 65.18 mg/g) and also exhibited high radical scavenging activity in vitro. S. nigrum and C. album were found to be rich sources of ascorbic acid, having 1.05mg/100g and 1.01mg/100g, respectively. The entire wild, traditionally edible plants contain reasonably good concentrations of riboflavin while U. lobulata was found to contain maximum amount of thiamine. All plant species were rich sources of minerals and vitamins (both water soluble and fat soluble). Appropriate cooking methods are to be used to enhance the bio-availability of vitamins and nutrients in general. Cooking generally improved the nutritive value in certain wild vegetables. However, some nutrients were drained away. For example micro-nutrient and anti-nutrient component in the ash were reduced in cooking. The EDXS analysis has shown that the indigenous, wild vegetables in the Amathole District of South Africa are excellent sources of minerals, while the mineral crystals present at the level of the mesophyll of the indigenous wild vegetables were probably mixtures of calcium oxalate, calcium sulphate and silica. Saponin, tannins, oxalates, phytates and alkaloids are present in all the indigenous wild vegetables, but in minimal safe quantities. Nutritional analysis of some wild food plants demonstrates that in many cases the nutritional quality of the plants is comparable and in some cases even superior to domesticated exotic varieties. Knowledge about gathering and use of some wild food species is common among the rural dwellers. However, most uses are known by few elderly informants only. Education, awareness campaigns and revival of use of wild edible plants directed at the youth particularly is essential and this can be done through all forms of media. , Thesis (PhD) (Ethnobotany) -- University of Fort Hare, 2012
- Full Text:
- Date Issued: 2012
A study of the southwestern Karoo basin in South Africa using magnetic and gravity data
- Authors: Nxantsiya, Zusakhe
- Date: 2017
- Subjects: Groundwater -- South Africa -- Karoo
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/14043 , vital:39800
- Description: The early efforts of Booth, Johnson, Rubidge, Catuneanu, de Wit, Chevallier, Stankiewicz, Weckmann and many other scientists in studying the Karoo Supergroup has led to comprehensive documentation of the geology on the main Karoo Basin with regards to understanding the age, sedimentology, sedimentary facies and depositional environments. In spite of these studies, the subsurface structure, variations in thickness of various formations in large parts of the basin, the location and orientation of subsurface dolerite intrusions, and the depth to magnetic and gravity sources remains poorly documented. A geological study with the aid of geophysical techniques, magnetic and gravity, was conducted in the southwestern part of the main Karoo Basin. The objectives of the study were to construct numerous models of the main basin that image the crust to a depth of 45 km, to determine thicknesses of various formations, to relate observed geophysical anomalies with geological bodies and lineaments, to estimate the depth of existing anomalous bodies, to determine densities and porosity of various formations, as well as to determine the mineralogy of various rocks in the Karoo Basin. In total, seventy one rock samples were collected in the main Karoo Basin for density and mineralogical studies. The density results showed that the Beaufort and Ecca Group rocks have the low mean density of 2.490 g/cm3 amongst the rocks while the dolerite intrusions have the highest mean density of 2.697 g/cm3. The porosities of various rocks determined from the measured rock densities revealed that the Ecca Group shales, particularly the Whitehill Formation has the highest porosity of 4.5percent, while the Collingham Formation has the least porosity of 1.4 percent amongst the Ecca Group shales. Mineralogical analysis of seventeen XRD samples and 26 thin sections indicate that quartz, kaolinite, and plagioclase occur as the major mineral in most sandstones and shales in the Karoo Basin, while the pyrophyllite, smectite, and talc occur as minor minerals. Other mineral constituents include, calcite, mica, and amphibole. The 2½ dimensional (2½ D) gravity modelling along seven selected profiles, across the Beattie Magnetic Anomaly (BMA), revealed that the Ecca Group sediments, a target for shale gas exploration in the Karoo, occurs within a depth range of 0 - 4000 m from the surface. The basin deepens to a depth of 4600 m in the southwestern region, near the front of the Cape Fold Belt. It was observed as well that the Karoo dolerite sills are connected at depths and are mostly concentrated at the centre, the deepest part of the basin with some having saucer shape - like structure. These observations correspond well with the borehole data from AB 1/65 and QU 1/65 presented in Linol and de Wit (2016). Thickness isochore maps that were extracted from the gravity models indicate that the Ecca Group, which is the main target for hydrocarbon exploration, thickens to the south away from the centre of the basin and reaches thicknesses of greater than 3680 m. The Beaufort Group proves to be the thickest succession in the Karoo Basin with an estimated thickness of up to 6046 m. Constructed geophysical maps with the geology overlain reveal that most magnetic anomalies are due to dolerite intrusions, while gravity lows are due to less dense shales of the Ecca Group. The depth slices of magnetic data indicate that near surface magnetic bodies occur within the depth of 42 m from the surface whereas deep seated ones occur as deep as 9488 m and possibly deeper. Gravity depth slices reveal signatures that are predominant at depth of 2403 m are of short wavelength and are mainly lineaments and circular structures. They ultimately disappear at depth of 7120 m. The depth slices further indicate that the intensity of both magnetic and gravity long wavelength signatures become stronger with increasing depths.
- Full Text:
- Date Issued: 2017
- Authors: Nxantsiya, Zusakhe
- Date: 2017
- Subjects: Groundwater -- South Africa -- Karoo
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/14043 , vital:39800
- Description: The early efforts of Booth, Johnson, Rubidge, Catuneanu, de Wit, Chevallier, Stankiewicz, Weckmann and many other scientists in studying the Karoo Supergroup has led to comprehensive documentation of the geology on the main Karoo Basin with regards to understanding the age, sedimentology, sedimentary facies and depositional environments. In spite of these studies, the subsurface structure, variations in thickness of various formations in large parts of the basin, the location and orientation of subsurface dolerite intrusions, and the depth to magnetic and gravity sources remains poorly documented. A geological study with the aid of geophysical techniques, magnetic and gravity, was conducted in the southwestern part of the main Karoo Basin. The objectives of the study were to construct numerous models of the main basin that image the crust to a depth of 45 km, to determine thicknesses of various formations, to relate observed geophysical anomalies with geological bodies and lineaments, to estimate the depth of existing anomalous bodies, to determine densities and porosity of various formations, as well as to determine the mineralogy of various rocks in the Karoo Basin. In total, seventy one rock samples were collected in the main Karoo Basin for density and mineralogical studies. The density results showed that the Beaufort and Ecca Group rocks have the low mean density of 2.490 g/cm3 amongst the rocks while the dolerite intrusions have the highest mean density of 2.697 g/cm3. The porosities of various rocks determined from the measured rock densities revealed that the Ecca Group shales, particularly the Whitehill Formation has the highest porosity of 4.5percent, while the Collingham Formation has the least porosity of 1.4 percent amongst the Ecca Group shales. Mineralogical analysis of seventeen XRD samples and 26 thin sections indicate that quartz, kaolinite, and plagioclase occur as the major mineral in most sandstones and shales in the Karoo Basin, while the pyrophyllite, smectite, and talc occur as minor minerals. Other mineral constituents include, calcite, mica, and amphibole. The 2½ dimensional (2½ D) gravity modelling along seven selected profiles, across the Beattie Magnetic Anomaly (BMA), revealed that the Ecca Group sediments, a target for shale gas exploration in the Karoo, occurs within a depth range of 0 - 4000 m from the surface. The basin deepens to a depth of 4600 m in the southwestern region, near the front of the Cape Fold Belt. It was observed as well that the Karoo dolerite sills are connected at depths and are mostly concentrated at the centre, the deepest part of the basin with some having saucer shape - like structure. These observations correspond well with the borehole data from AB 1/65 and QU 1/65 presented in Linol and de Wit (2016). Thickness isochore maps that were extracted from the gravity models indicate that the Ecca Group, which is the main target for hydrocarbon exploration, thickens to the south away from the centre of the basin and reaches thicknesses of greater than 3680 m. The Beaufort Group proves to be the thickest succession in the Karoo Basin with an estimated thickness of up to 6046 m. Constructed geophysical maps with the geology overlain reveal that most magnetic anomalies are due to dolerite intrusions, while gravity lows are due to less dense shales of the Ecca Group. The depth slices of magnetic data indicate that near surface magnetic bodies occur within the depth of 42 m from the surface whereas deep seated ones occur as deep as 9488 m and possibly deeper. Gravity depth slices reveal signatures that are predominant at depth of 2403 m are of short wavelength and are mainly lineaments and circular structures. They ultimately disappear at depth of 7120 m. The depth slices further indicate that the intensity of both magnetic and gravity long wavelength signatures become stronger with increasing depths.
- Full Text:
- Date Issued: 2017
A study of the southwestern Karoo basin in South Africa using magnetic and gravity data
- Authors: Nxantsiya, Zusakhe
- Date: 2017
- Subjects: Groundwater -- South Africa -- Karoo Aquifers -- South Africa -- Karoo Hydrology -- South Africa -- Karoo
- Language: English
- Type: Thesis , Masters , Degree
- Identifier: http://hdl.handle.net/10353/4748 , vital:28509
- Description: The early efforts of Booth, Johnson, Rubidge, Catuneanu, de Wit, Chevallier, Stankiewicz, Weckmann and many other scientists in studying the Karoo Supergroup has led to comprehensive documentation of the geology on the main Karoo Basin with regards to understanding the age, sedimentology, sedimentary facies and depositional environments. In spite of these studies, the subsurface structure, variations in thickness of various formations in large parts of the basin, the location and orientation of subsurface dolerite intrusions, and the depth to magnetic and gravity sources remains poorly documented. A geological study with the aid of geophysical techniques, magnetic and gravity, was conducted in the southwestern part of the main Karoo Basin. The objectives of the study were to construct numerous models of the main basin that image the crust to a depth of 45 km, to determine thicknesses of various formations, to relate observed geophysical anomalies with geological bodies and lineaments, to estimate the depth of existing anomalous bodies, to determine densities and porosity of various formations, as well as to determine the mineralogy of various rocks in the Karoo Basin.
- Full Text:
- Date Issued: 2017
- Authors: Nxantsiya, Zusakhe
- Date: 2017
- Subjects: Groundwater -- South Africa -- Karoo Aquifers -- South Africa -- Karoo Hydrology -- South Africa -- Karoo
- Language: English
- Type: Thesis , Masters , Degree
- Identifier: http://hdl.handle.net/10353/4748 , vital:28509
- Description: The early efforts of Booth, Johnson, Rubidge, Catuneanu, de Wit, Chevallier, Stankiewicz, Weckmann and many other scientists in studying the Karoo Supergroup has led to comprehensive documentation of the geology on the main Karoo Basin with regards to understanding the age, sedimentology, sedimentary facies and depositional environments. In spite of these studies, the subsurface structure, variations in thickness of various formations in large parts of the basin, the location and orientation of subsurface dolerite intrusions, and the depth to magnetic and gravity sources remains poorly documented. A geological study with the aid of geophysical techniques, magnetic and gravity, was conducted in the southwestern part of the main Karoo Basin. The objectives of the study were to construct numerous models of the main basin that image the crust to a depth of 45 km, to determine thicknesses of various formations, to relate observed geophysical anomalies with geological bodies and lineaments, to estimate the depth of existing anomalous bodies, to determine densities and porosity of various formations, as well as to determine the mineralogy of various rocks in the Karoo Basin.
- Full Text:
- Date Issued: 2017
A study on the effects of mental illness on relationships amongst families with the mentally ill members
- Authors: Magadla, Mfanisi Welcome
- Date: 2009
- Subjects: Families -- Health and hygiene , Mentally ill -- Home care , Mentally ill -- Family relationships , Mental illness
- Language: English
- Type: Thesis , Masters , MSc (Nursing Science)
- Identifier: vital:11901 , http://hdl.handle.net/10353/d1001101 , Families -- Health and hygiene , Mentally ill -- Home care , Mentally ill -- Family relationships , Mental illness
- Description: The increased abscondment of Mental Health Care Users from institutions of care, treatment and rehabilitation has prompted the researcher to conduct the study because patients who are not visited do not stand a chance of getting a Leave Of Absence (LOA). Problem: The concern is the danger of assault, murder, rape and other high risk situations the mentally ill individuals and the community are exposed to, which is caused by frequent abscondment of mentally unstable individuals who roam around the community without proper treatment and care. This is caused by failure of the relatives in coming to request patients for leave of absence (LOA). Purpose: The study investigated the effects of mental illness on relationships amongst families with the mentally ill members. The number or frequency of visitations by relatives to the mental health institutions is used by the researcher, to measure the nature of relationships between families and the psychiatric patients related to them. Method: The population comprised families of the mentally ill persons admitted at Cecilia Makiwane mental health units. The sample was collected conveniently as relatives came to visit the mentally ill until the desired number was reached. The designed tool was a questionnaire which was self administered. Data were analysed manually. Tables and graphs are shown in the results. Conclusion and Recommendations: The study revealed that approximately 100% of respondents had a lack of knowledge about mental illness and the mentally ill, in terms of care, treatment and rehabilitation hence they all need assistance in dealing with the mentally ill in the community. Findings also revealed that mental illness causes breakdown in family relationships. Recommendations regarding the enhancement of relationships between families and their mentally ill members are formulated as coping skills in the dissertation. The burden of having to deal with mentally ill person whose illness is not understood can lead the family to a state of confusion and iv not knowing what to anticipate. Lack of resources compounds the problem as the family members are not able to visit the ill member due to lack of funds (Baumann, 2007:637). The families with a mentally ill member usually shoulder the greatest part of the burden of mental illness (Uys and Middleton, 2004:77); unfortunately, lack of resources pose a problem.
- Full Text:
- Date Issued: 2009
- Authors: Magadla, Mfanisi Welcome
- Date: 2009
- Subjects: Families -- Health and hygiene , Mentally ill -- Home care , Mentally ill -- Family relationships , Mental illness
- Language: English
- Type: Thesis , Masters , MSc (Nursing Science)
- Identifier: vital:11901 , http://hdl.handle.net/10353/d1001101 , Families -- Health and hygiene , Mentally ill -- Home care , Mentally ill -- Family relationships , Mental illness
- Description: The increased abscondment of Mental Health Care Users from institutions of care, treatment and rehabilitation has prompted the researcher to conduct the study because patients who are not visited do not stand a chance of getting a Leave Of Absence (LOA). Problem: The concern is the danger of assault, murder, rape and other high risk situations the mentally ill individuals and the community are exposed to, which is caused by frequent abscondment of mentally unstable individuals who roam around the community without proper treatment and care. This is caused by failure of the relatives in coming to request patients for leave of absence (LOA). Purpose: The study investigated the effects of mental illness on relationships amongst families with the mentally ill members. The number or frequency of visitations by relatives to the mental health institutions is used by the researcher, to measure the nature of relationships between families and the psychiatric patients related to them. Method: The population comprised families of the mentally ill persons admitted at Cecilia Makiwane mental health units. The sample was collected conveniently as relatives came to visit the mentally ill until the desired number was reached. The designed tool was a questionnaire which was self administered. Data were analysed manually. Tables and graphs are shown in the results. Conclusion and Recommendations: The study revealed that approximately 100% of respondents had a lack of knowledge about mental illness and the mentally ill, in terms of care, treatment and rehabilitation hence they all need assistance in dealing with the mentally ill in the community. Findings also revealed that mental illness causes breakdown in family relationships. Recommendations regarding the enhancement of relationships between families and their mentally ill members are formulated as coping skills in the dissertation. The burden of having to deal with mentally ill person whose illness is not understood can lead the family to a state of confusion and iv not knowing what to anticipate. Lack of resources compounds the problem as the family members are not able to visit the ill member due to lack of funds (Baumann, 2007:637). The families with a mentally ill member usually shoulder the greatest part of the burden of mental illness (Uys and Middleton, 2004:77); unfortunately, lack of resources pose a problem.
- Full Text:
- Date Issued: 2009
A study on the knowledge and skills of police officers in handling mentally ill persons in Mdantsane in the Eastern Cape Province of South Africa
- Authors: Kolwapi, Xola Xolani
- Date: 2009
- Subjects: Mentally ill -- South Africa -- Eastern Cape , Police -- South Africa -- Eastern Cape , People with disabilities -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc (Nursing Science)
- Identifier: vital:11902 , http://hdl.handle.net/10353/406 , Mentally ill -- South Africa -- Eastern Cape , Police -- South Africa -- Eastern Cape , People with disabilities -- South Africa -- Eastern Cape
- Description: The dissertation argues that police officers are not trained in handling mentally ill persons. Purpose The study explored police officers‟ knowledge of mental illness and skills necessary for handling mentally ill people. Research methods The descriptive quantitative investigation has been used as a research strategy to identify the knowledge and skills of police officers in handling mentally ill persons. Forty five police officers were randomly selected from a population of 136 police officers. A self administered questionnaire was used for collecting data. Data analysis was done manually and frequency distributions, cross-tabulations and correlations were carried out. Results The findings revealed that police officers do not have knowledge and skills to handle mentally ill people. Recommendations It is recommended that mental health care practitioners should engage the police in discussions on training in handling mentally ill people. iv Limitations Due to time and budgetary limitations, the study had to settle for a more modest investigation
- Full Text:
- Date Issued: 2009
- Authors: Kolwapi, Xola Xolani
- Date: 2009
- Subjects: Mentally ill -- South Africa -- Eastern Cape , Police -- South Africa -- Eastern Cape , People with disabilities -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc (Nursing Science)
- Identifier: vital:11902 , http://hdl.handle.net/10353/406 , Mentally ill -- South Africa -- Eastern Cape , Police -- South Africa -- Eastern Cape , People with disabilities -- South Africa -- Eastern Cape
- Description: The dissertation argues that police officers are not trained in handling mentally ill persons. Purpose The study explored police officers‟ knowledge of mental illness and skills necessary for handling mentally ill people. Research methods The descriptive quantitative investigation has been used as a research strategy to identify the knowledge and skills of police officers in handling mentally ill persons. Forty five police officers were randomly selected from a population of 136 police officers. A self administered questionnaire was used for collecting data. Data analysis was done manually and frequency distributions, cross-tabulations and correlations were carried out. Results The findings revealed that police officers do not have knowledge and skills to handle mentally ill people. Recommendations It is recommended that mental health care practitioners should engage the police in discussions on training in handling mentally ill people. iv Limitations Due to time and budgetary limitations, the study had to settle for a more modest investigation
- Full Text:
- Date Issued: 2009
A survey of the classification of fuzzy subgroups of some finite groups
- Authors: Makamba, Babington
- Date: 2015-03-18
- Language: English
- Type: Inaugural lecture
- Identifier: vital:11981 , http://hdl.handle.net/10353/d1016591
- Description: In this lecture we survey the classification of fuzzy subgroups of finite groups as studied byProf. B.B Makamba and V. Murali. We present the impact of the research on our postgraduate students. The classification is focusing on finite abelian p-groups and dihedral groups, giving a mixture of abelian and non-abelian groups. We show some highlights and what still needs to be done in the classification of fuzzy subgroups. We also touch on what other researchers have achieved in the classification of fuzzy subgroups and how our work is related to theirs. We begin with a historical background of fuzzy logic. , Inaugural Lecture Address by Prof. Babington Makamba- A survey of the classification of fuzzy subgroups of some finite groups.
- Full Text:
- Date Issued: 2015-03-18
- Authors: Makamba, Babington
- Date: 2015-03-18
- Language: English
- Type: Inaugural lecture
- Identifier: vital:11981 , http://hdl.handle.net/10353/d1016591
- Description: In this lecture we survey the classification of fuzzy subgroups of finite groups as studied byProf. B.B Makamba and V. Murali. We present the impact of the research on our postgraduate students. The classification is focusing on finite abelian p-groups and dihedral groups, giving a mixture of abelian and non-abelian groups. We show some highlights and what still needs to be done in the classification of fuzzy subgroups. We also touch on what other researchers have achieved in the classification of fuzzy subgroups and how our work is related to theirs. We begin with a historical background of fuzzy logic. , Inaugural Lecture Address by Prof. Babington Makamba- A survey of the classification of fuzzy subgroups of some finite groups.
- Full Text:
- Date Issued: 2015-03-18
A systematic review and document analysis on the prevention of mother-to-child programmes to prevent vertical transmission of human immuno-deficiency virus
- Authors: Sobetwa, Nwabisa Nokuzola
- Date: 2017
- Subjects: AIDS (Disease) in pregnancy Maternal health services HIV infections -- Children -- Transmission -- Prevention
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/7957 , vital:31282
- Description: Background: The National Strategic Plan 2012-2016 is advocating for zero new infections due to vertical transmission. This goal has not yet been achieved. This study evaluated whether the prevention of mother-to-child vertical transmission (PMTCT) of Human Immuno-deficiency Virus (HIV) programmes in South Africa are based on evidence. Aim: The aim of this study was to conduct a systematic review of the available literature comparing PMTCT antiretroviral regimens published between the years 2000 to 2015 and to do a document analysis of the current implemented PMTCT programme to evaluate if it is based on best evidence. Rational: The rational of the systematic review and the document analysis were to assess whether the latest PMTCT policy was based on evidence and to critically analyse published articles that addressed aspects related to efficacy and efficiency of PMTCT programmes to reduce transmission of HIV from mothers to their infants. Methods: Overall 25 randomised controlled trials and primary studies that assessed efficacy of ARV regimens to prevent mother-to-child transmission of the HIV during pregnancy, labour and the postnatal periods were systematically reviewed. In 1997 the first trial began and the last one ended in 2012. Twelve guidelines referring to PMTCT were sampled and they were published by WHO and Department of Health South Africa from 2001 to 2015. The document analysis was only based on National consolidated guidelines for the prevention of mother-to-child transmission of HIV (PMTCT) and the management of HIV in children, adolescents and adults April, 2015. Findings: The systematic review illustrated that significantly fewer infants tested HIV-positive when exposed to a longer ARV regime although there was no significant difference once the infants reached six months of age. Different ARVs have a similar Preamble effect on maternal deaths; however, a double or triple combination of ARVs is superior to monotherapy to decrease infant deaths. Common maternal adverse reactions to ARVs include anaemia, bronchopneumonia, and maculopapular rash. Infant adverse events included septicaemia, pneumonia, gastroenteritis, fever and maculopapular rash. The document analysis has shown that the PMTCT policy is mainly based on evidence from randomised controlled trials and systematic reviews. Occasionally some statements are still based on lower categories of evidence such as non-experimental descriptive studies. Conclusion: The systematic review showed that double and triple ARV therapy is superior to monotherapy and that the longer the mother and her infant are exposed to ARV therapy the better the results are to prevent MTCT. Adverse events are always posing a challenge and as with any other medication, caregivers must be aware of potential adverse reactions. The National consolidated guidelines for the prevention of mother-to-child transmission of HIV (PMTCT) and the management of HIV in children, adolescents and adults April 2015 is based on evidence, but the policy itself does not include any reference to evidence.
- Full Text:
- Date Issued: 2017
- Authors: Sobetwa, Nwabisa Nokuzola
- Date: 2017
- Subjects: AIDS (Disease) in pregnancy Maternal health services HIV infections -- Children -- Transmission -- Prevention
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/7957 , vital:31282
- Description: Background: The National Strategic Plan 2012-2016 is advocating for zero new infections due to vertical transmission. This goal has not yet been achieved. This study evaluated whether the prevention of mother-to-child vertical transmission (PMTCT) of Human Immuno-deficiency Virus (HIV) programmes in South Africa are based on evidence. Aim: The aim of this study was to conduct a systematic review of the available literature comparing PMTCT antiretroviral regimens published between the years 2000 to 2015 and to do a document analysis of the current implemented PMTCT programme to evaluate if it is based on best evidence. Rational: The rational of the systematic review and the document analysis were to assess whether the latest PMTCT policy was based on evidence and to critically analyse published articles that addressed aspects related to efficacy and efficiency of PMTCT programmes to reduce transmission of HIV from mothers to their infants. Methods: Overall 25 randomised controlled trials and primary studies that assessed efficacy of ARV regimens to prevent mother-to-child transmission of the HIV during pregnancy, labour and the postnatal periods were systematically reviewed. In 1997 the first trial began and the last one ended in 2012. Twelve guidelines referring to PMTCT were sampled and they were published by WHO and Department of Health South Africa from 2001 to 2015. The document analysis was only based on National consolidated guidelines for the prevention of mother-to-child transmission of HIV (PMTCT) and the management of HIV in children, adolescents and adults April, 2015. Findings: The systematic review illustrated that significantly fewer infants tested HIV-positive when exposed to a longer ARV regime although there was no significant difference once the infants reached six months of age. Different ARVs have a similar Preamble effect on maternal deaths; however, a double or triple combination of ARVs is superior to monotherapy to decrease infant deaths. Common maternal adverse reactions to ARVs include anaemia, bronchopneumonia, and maculopapular rash. Infant adverse events included septicaemia, pneumonia, gastroenteritis, fever and maculopapular rash. The document analysis has shown that the PMTCT policy is mainly based on evidence from randomised controlled trials and systematic reviews. Occasionally some statements are still based on lower categories of evidence such as non-experimental descriptive studies. Conclusion: The systematic review showed that double and triple ARV therapy is superior to monotherapy and that the longer the mother and her infant are exposed to ARV therapy the better the results are to prevent MTCT. Adverse events are always posing a challenge and as with any other medication, caregivers must be aware of potential adverse reactions. The National consolidated guidelines for the prevention of mother-to-child transmission of HIV (PMTCT) and the management of HIV in children, adolescents and adults April 2015 is based on evidence, but the policy itself does not include any reference to evidence.
- Full Text:
- Date Issued: 2017
A systematic review of published literature examining the impact of father absence on adolescent identity formation
- Authors: Fata, Hope Aneliswa
- Date: 2022-12
- Subjects: Absentee fathers , Adolescent analysis , Adolescent psychology
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/27039 , vital:66239
- Description: One of the major developmental crises an adolescent must overcome before becoming an adult is identity formation. Many studies focused on how the family influences the identity formation of adolescents, but little emphasis has been made specifically on how the absence of a father impacts the adolescent’s development of identity. This study aims to conduct a systematic review to examine the impact of absent fatherhood on the identity formation of adolescents. Several studies, from the year 2010 to date, have explored the impact of father absence on the identity formation of adolescents. The majority of studies conducted have been mostly quantitative and failed to explore the experiences of adolescents raised in absent-father households during this crucial stage of development. This study sought to add to the body of knowledge and bridge that gap by exploring the possible (negative or positive) impact of absent fatherhood in the identity-formation period of adolescents. This was a systematic review study that included a qualitative research design, whereby published literature and studies were identified through searching electronic databases. To synthesize and analyse the data, thematic analysis was used. This study’s exploration discovered that absent fatherhood can be experienced both positively and negatively by adolescents. Positively, it was found that a sense of independency developed in the adolescent and strengthens family relations and unity, with extended family members or external role models becoming more involved in the upbringing of the adolescent. Significantly, on the negative side, adolescents developed anger and resentment towards their absent fathers, questioning their absence and the individual’s sense of who they are and where they belong. , Thesis (MSoc) -- Faculty of Social Sciences and Humanities, 2022
- Full Text:
- Date Issued: 2022-12
- Authors: Fata, Hope Aneliswa
- Date: 2022-12
- Subjects: Absentee fathers , Adolescent analysis , Adolescent psychology
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/27039 , vital:66239
- Description: One of the major developmental crises an adolescent must overcome before becoming an adult is identity formation. Many studies focused on how the family influences the identity formation of adolescents, but little emphasis has been made specifically on how the absence of a father impacts the adolescent’s development of identity. This study aims to conduct a systematic review to examine the impact of absent fatherhood on the identity formation of adolescents. Several studies, from the year 2010 to date, have explored the impact of father absence on the identity formation of adolescents. The majority of studies conducted have been mostly quantitative and failed to explore the experiences of adolescents raised in absent-father households during this crucial stage of development. This study sought to add to the body of knowledge and bridge that gap by exploring the possible (negative or positive) impact of absent fatherhood in the identity-formation period of adolescents. This was a systematic review study that included a qualitative research design, whereby published literature and studies were identified through searching electronic databases. To synthesize and analyse the data, thematic analysis was used. This study’s exploration discovered that absent fatherhood can be experienced both positively and negatively by adolescents. Positively, it was found that a sense of independency developed in the adolescent and strengthens family relations and unity, with extended family members or external role models becoming more involved in the upbringing of the adolescent. Significantly, on the negative side, adolescents developed anger and resentment towards their absent fathers, questioning their absence and the individual’s sense of who they are and where they belong. , Thesis (MSoc) -- Faculty of Social Sciences and Humanities, 2022
- Full Text:
- Date Issued: 2022-12
A systematic review of published literature examining the link between maternal attachment and adolescent anxiety
- Amos-Brown, Alexa https://orcid.org/0000-0002-8180-3176
- Authors: Amos-Brown, Alexa https://orcid.org/0000-0002-8180-3176
- Date: 2022-02
- Subjects: Adolescent psychopathology , Teenagers -- Mental health
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/23677 , vital:58295
- Description: Aim: Over the last few years, there has been a significant increase in mental health challenges in adolescents, specifically anxiety and depression. There has thus been concern around what could be causing this increase. The present study therefore aimed to examine the link between maternal attachment and adolescent anxiety. Methodology: The research was conducted using a qualitative systematic review as the methodological approach. The sample included ten academic journal articles. These articles were searched using Google Scholar and The University of Fort Hare’s library database search engine. Final articles were selected based on the systematic review process of ensuring that the articles matched the inclusion criteria, centred on the main research question and sub-questions. Findings and Results: At the end of the systematic review process, the final literature articles were analysed using thematic analysis, which identified, analysed, and reported emerging themes. The study revealed that secure attachment and sensitive parenting buffer and protect against the risk and onset of anxiety and adolescent internalizing behaviours. The thematic analysis findings identified emerging themes based on the data analysis, which include: ‘Sensitive parenting as a buffer’, ‘Quality attachment protects’, ‘Safe haven’, ‘Insecure attachment precedes emotion regulation difficulties’, ‘Insecure attachment is associated with anxiety’, ‘Social problems,’ and ‘Negative parental-control undermines attachment security’. Conclusion and recommendations: The extracts provided by the literature were able to successfully give sufficient information to meet all of my study’s research objectives. The findings revealed that very few articles spoke about interventions that can be applied to assist in the development of healthy maternal attachment. Therefore, it is recommended that research be conducted on attachment-based interventions and building restorative adolescent attachment bonds. , Thesis (MSoc) -- Faculty of Social Sciences and Humanities, 2022
- Full Text:
- Date Issued: 2022-02
- Authors: Amos-Brown, Alexa https://orcid.org/0000-0002-8180-3176
- Date: 2022-02
- Subjects: Adolescent psychopathology , Teenagers -- Mental health
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/23677 , vital:58295
- Description: Aim: Over the last few years, there has been a significant increase in mental health challenges in adolescents, specifically anxiety and depression. There has thus been concern around what could be causing this increase. The present study therefore aimed to examine the link between maternal attachment and adolescent anxiety. Methodology: The research was conducted using a qualitative systematic review as the methodological approach. The sample included ten academic journal articles. These articles were searched using Google Scholar and The University of Fort Hare’s library database search engine. Final articles were selected based on the systematic review process of ensuring that the articles matched the inclusion criteria, centred on the main research question and sub-questions. Findings and Results: At the end of the systematic review process, the final literature articles were analysed using thematic analysis, which identified, analysed, and reported emerging themes. The study revealed that secure attachment and sensitive parenting buffer and protect against the risk and onset of anxiety and adolescent internalizing behaviours. The thematic analysis findings identified emerging themes based on the data analysis, which include: ‘Sensitive parenting as a buffer’, ‘Quality attachment protects’, ‘Safe haven’, ‘Insecure attachment precedes emotion regulation difficulties’, ‘Insecure attachment is associated with anxiety’, ‘Social problems,’ and ‘Negative parental-control undermines attachment security’. Conclusion and recommendations: The extracts provided by the literature were able to successfully give sufficient information to meet all of my study’s research objectives. The findings revealed that very few articles spoke about interventions that can be applied to assist in the development of healthy maternal attachment. Therefore, it is recommended that research be conducted on attachment-based interventions and building restorative adolescent attachment bonds. , Thesis (MSoc) -- Faculty of Social Sciences and Humanities, 2022
- Full Text:
- Date Issued: 2022-02
A systematic review on contributing factors leading to prison (Correctional Service) escapes.
- Authors: Nunze, Ncediswa
- Date: 2019
- Subjects: Prisoners -- South Africa Escapes -- South Africa
- Language: English
- Type: Thesis , Masters , MSoc. Sci (Criminology)
- Identifier: http://hdl.handle.net/10353/16506 , vital:40726
- Description: The study presents a systematic literature on contributing factors leading to prison escape. The purpose of this study is to systematically review the contributing factors that are associated with escape from correctional centre. Objectives of the study: To investigate the impact of social and cultural dynamics and triggers that motivates inmates to escape from correctional centre e.g. the internal factors and the external factors and to establish prevention strategies to deal with escapes. Method: Secondary data was employed in the study. The researcher collected the data using qualitative approach from different sources, including newspaper, prison journals, articles and the data that was originally collected for other research purposes on prison escape, both internationally and nationally. Specific data within the studies and articles is used to determine the contributing factors leading to prison escape. Data was analysed using thematic analysis. Findings: External factors such as: (family problems, missing family, the external environment and contact with the external environment, residency, loss loved ones, loss of liberty and lack of stimulation and loss of control), and internal factors such as: structural factors (e.g., crowding and size of prison, transfers, loss of security); management practices (e.g., management style, staff culture, inadequate institutional management); and environmental influences (e.g., alcohol and drug abuse, institutional crisis situations, parole problems, institutional misconduct and punishment, institutional programs, violence in prison (vulnerability to violence and gang related), limitation of goods and services, limitation of autonomy, sexual deprivation, inadequate facilities, unnatural environmental conditions are contributing factors leading to prison escapes. Conclusion: The more closely the conditions of imprisonment approximate those normally seen outside, the better the inmates can learn to survive without resorting to criminal. This allows them to also learn the ways that will help them survive outside the correctional centre and function as normal citizens. More opportunities must be created for inmates to pursue a meaningful life in prison and the existing programmes should be continuously checked if they are being practised properly. Encourage inmates to keep contact with relatives and mends so that they do not lose contact with the outside world. Correctional staff and administrators pay close attention to the policies and practices for circumstances in which violence is likely to occur, such as during inmate transport.
- Full Text:
- Date Issued: 2019
- Authors: Nunze, Ncediswa
- Date: 2019
- Subjects: Prisoners -- South Africa Escapes -- South Africa
- Language: English
- Type: Thesis , Masters , MSoc. Sci (Criminology)
- Identifier: http://hdl.handle.net/10353/16506 , vital:40726
- Description: The study presents a systematic literature on contributing factors leading to prison escape. The purpose of this study is to systematically review the contributing factors that are associated with escape from correctional centre. Objectives of the study: To investigate the impact of social and cultural dynamics and triggers that motivates inmates to escape from correctional centre e.g. the internal factors and the external factors and to establish prevention strategies to deal with escapes. Method: Secondary data was employed in the study. The researcher collected the data using qualitative approach from different sources, including newspaper, prison journals, articles and the data that was originally collected for other research purposes on prison escape, both internationally and nationally. Specific data within the studies and articles is used to determine the contributing factors leading to prison escape. Data was analysed using thematic analysis. Findings: External factors such as: (family problems, missing family, the external environment and contact with the external environment, residency, loss loved ones, loss of liberty and lack of stimulation and loss of control), and internal factors such as: structural factors (e.g., crowding and size of prison, transfers, loss of security); management practices (e.g., management style, staff culture, inadequate institutional management); and environmental influences (e.g., alcohol and drug abuse, institutional crisis situations, parole problems, institutional misconduct and punishment, institutional programs, violence in prison (vulnerability to violence and gang related), limitation of goods and services, limitation of autonomy, sexual deprivation, inadequate facilities, unnatural environmental conditions are contributing factors leading to prison escapes. Conclusion: The more closely the conditions of imprisonment approximate those normally seen outside, the better the inmates can learn to survive without resorting to criminal. This allows them to also learn the ways that will help them survive outside the correctional centre and function as normal citizens. More opportunities must be created for inmates to pursue a meaningful life in prison and the existing programmes should be continuously checked if they are being practised properly. Encourage inmates to keep contact with relatives and mends so that they do not lose contact with the outside world. Correctional staff and administrators pay close attention to the policies and practices for circumstances in which violence is likely to occur, such as during inmate transport.
- Full Text:
- Date Issued: 2019
A systems approach to marketing in less developed agriculture with reference to Bululwane Irrigation Scheme
- Authors: Zenda, Sipho Macriba
- Date: 2002
- Subjects: Farm produce -- South Africa -- Marketing , Farms, Small -- South Africa , Sustainable agriculture -- South Africa , Agricultural development projects -- South Africa , Irrigation farming -- South Africa
- Language: English
- Type: Thesis , Masters , MSc Agric (Agricultural Economics)
- Identifier: vital:11192 , http://hdl.handle.net/10353/d1001045 , Farm produce -- South Africa -- Marketing , Farms, Small -- South Africa , Sustainable agriculture -- South Africa , Agricultural development projects -- South Africa , Irrigation farming -- South Africa
- Full Text: false
- Date Issued: 2002
- Authors: Zenda, Sipho Macriba
- Date: 2002
- Subjects: Farm produce -- South Africa -- Marketing , Farms, Small -- South Africa , Sustainable agriculture -- South Africa , Agricultural development projects -- South Africa , Irrigation farming -- South Africa
- Language: English
- Type: Thesis , Masters , MSc Agric (Agricultural Economics)
- Identifier: vital:11192 , http://hdl.handle.net/10353/d1001045 , Farm produce -- South Africa -- Marketing , Farms, Small -- South Africa , Sustainable agriculture -- South Africa , Agricultural development projects -- South Africa , Irrigation farming -- South Africa
- Full Text: false
- Date Issued: 2002
A Theme from South African History - Society and Politics (19th Century): HIS 503/503E
- Peires, J B, Minkley, G, Andreas, C, Phoofolo, P
- Authors: Peires, J B , Minkley, G , Andreas, C , Phoofolo, P
- Date: 2010-05
- Language: English
- Type: Examination paper
- Identifier: vital:18384 , http://hdl.handle.net/10353/d1011543
- Description: A Theme from South African History - Society and Politics (19th Century): HIS 503/503E, degree examination May/June 2010.
- Full Text: false
- Date Issued: 2010-05
- Authors: Peires, J B , Minkley, G , Andreas, C , Phoofolo, P
- Date: 2010-05
- Language: English
- Type: Examination paper
- Identifier: vital:18384 , http://hdl.handle.net/10353/d1011543
- Description: A Theme from South African History - Society and Politics (19th Century): HIS 503/503E, degree examination May/June 2010.
- Full Text: false
- Date Issued: 2010-05
A Theme from South African History - the Eastern Cape: HIS 503E
- Minkley, G, Andreas, C, Molapo, R
- Authors: Minkley, G , Andreas, C , Molapo, R
- Date: 2011-11
- Language: English
- Type: Examination paper
- Identifier: vital:18410 , http://hdl.handle.net/10353/d1011577
- Description: A Theme from South African History - the Eastern Cape: HIS 503E, degree examination November 2011.
- Full Text: false
- Date Issued: 2011-11
- Authors: Minkley, G , Andreas, C , Molapo, R
- Date: 2011-11
- Language: English
- Type: Examination paper
- Identifier: vital:18410 , http://hdl.handle.net/10353/d1011577
- Description: A Theme from South African History - the Eastern Cape: HIS 503E, degree examination November 2011.
- Full Text: false
- Date Issued: 2011-11
A Theme from South African History: HIS 503
- Authors: Peires, J B , Phoofolo, P
- Date: 2009-11
- Language: English
- Type: Examination paper
- Identifier: vital:18407 , http://hdl.handle.net/10353/d1011573
- Description: A Theme from South African History: HIS 503, degree examination November 2009.
- Full Text: false
- Date Issued: 2009-11
- Authors: Peires, J B , Phoofolo, P
- Date: 2009-11
- Language: English
- Type: Examination paper
- Identifier: vital:18407 , http://hdl.handle.net/10353/d1011573
- Description: A Theme from South African History: HIS 503, degree examination November 2009.
- Full Text: false
- Date Issued: 2009-11
A theme from South African History: HIS 503& 503E- Jan. 2010
- Yekela, D.S, Minkley, G, Andreas, C, Phoofolo, F
- Authors: Yekela, D.S , Minkley, G , Andreas, C , Phoofolo, F
- Date: 2010-01
- Language: English
- Type: Examination paper
- Identifier: vital:18370 , http://hdl.handle.net/10353/d1011527
- Description: Examination on A theme from South African History: HIS 503& 503E- Jan. 2010
- Full Text: false
- Date Issued: 2010-01
- Authors: Yekela, D.S , Minkley, G , Andreas, C , Phoofolo, F
- Date: 2010-01
- Language: English
- Type: Examination paper
- Identifier: vital:18370 , http://hdl.handle.net/10353/d1011527
- Description: Examination on A theme from South African History: HIS 503& 503E- Jan. 2010
- Full Text: false
- Date Issued: 2010-01
A Theoretical Approach to Differential Calculus: MAT 111
- Authors: Ndiweni, O , Mahlasela, Z
- Date: 2011-06
- Language: English
- Type: Examination paper
- Identifier: vital:17599 , http://hdl.handle.net/10353/d1009973
- Description: A Theoretical Approach to Differential Calculus: MAT 111, degree examination June 2011.
- Full Text: false
- Date Issued: 2011-06
- Authors: Ndiweni, O , Mahlasela, Z
- Date: 2011-06
- Language: English
- Type: Examination paper
- Identifier: vital:17599 , http://hdl.handle.net/10353/d1009973
- Description: A Theoretical Approach to Differential Calculus: MAT 111, degree examination June 2011.
- Full Text: false
- Date Issued: 2011-06
A Theoretical Approach to Integral Calculus: MAT 121
- Authors: Ndiweni, O , Mahlasela, Z
- Date: 2010-11
- Language: English
- Type: Examination paper
- Identifier: vital:17615 , http://hdl.handle.net/10353/d1009990
- Description: A Theoretical Approach to Integral Calculus: MAT 121, degree examination November 2010.
- Full Text: false
- Date Issued: 2010-11
- Authors: Ndiweni, O , Mahlasela, Z
- Date: 2010-11
- Language: English
- Type: Examination paper
- Identifier: vital:17615 , http://hdl.handle.net/10353/d1009990
- Description: A Theoretical Approach to Integral Calculus: MAT 121, degree examination November 2010.
- Full Text: false
- Date Issued: 2010-11