Regional and community food systems for rural households :|bthe case of maize in Mqanduli, Eastern Cape Province, South Africa
- Authors: Qangule, Mondli
- Date: 2018
- Subjects: Sustainable agriculture -- South Africa -- Eastern Cape Food supply -- South Africa -- Eastern Cape Agricultural systems -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/10232 , vital:35383
- Description: Smallholder farmers have been growing food in their communities, but some are still food insecure. Therefore, appropriate food systems are very important for smallholder farmers’ self-reliance as well as food and nutrition security. The study focuses only on community and regional maize food systems for rural households. The main aim of this study was to investigate the regional and community food systems for smallholder maize farmers in Mqanduli. The objectives of the study were to profile smallholder maize farmers, describing the existing maize food systems and patterns in Mqanduli and also to determine factors that influence farmers’ participation in local or regional markets. Availability or convenient sampling and random sampling techniques were used to collect primary data from smallholder maize farmers. Descriptive statistics was used to profile smallholder farmers, as well as, in describing the existing maize food systems at Mqanduli. The binary logistic regression model was used to analyse the variables that had influenced the smallholder famers’ participation in markets. Descriptive results revealed that, smallholder maize farmers in Mqanduli are characterised by high participation in both local and regional markets. Moreover, they utilized both community and regional food systems. Logistic regression results indicated that, out of 11 variables included in the analysis as factors influencing farmers’ participation, 6 of them (age, level of education, market information, distance, access to credit and extension visit) were found to be significant and 5 (gender, amount of land, transport availability etc) were not significant. However, access to credit and distance were found to be the most significant variables, showing a positive relationship to smallholder maize producer`s market participation. Therefore, it was recommended that, there must be more investment in research by government and policy makers when it comes to food systems especially in rural areas, to enhance smallholders’ livelihood. More access to credit is also needed by farmers in order to be able to market their produces.
- Full Text:
- Authors: Qangule, Mondli
- Date: 2018
- Subjects: Sustainable agriculture -- South Africa -- Eastern Cape Food supply -- South Africa -- Eastern Cape Agricultural systems -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/10232 , vital:35383
- Description: Smallholder farmers have been growing food in their communities, but some are still food insecure. Therefore, appropriate food systems are very important for smallholder farmers’ self-reliance as well as food and nutrition security. The study focuses only on community and regional maize food systems for rural households. The main aim of this study was to investigate the regional and community food systems for smallholder maize farmers in Mqanduli. The objectives of the study were to profile smallholder maize farmers, describing the existing maize food systems and patterns in Mqanduli and also to determine factors that influence farmers’ participation in local or regional markets. Availability or convenient sampling and random sampling techniques were used to collect primary data from smallholder maize farmers. Descriptive statistics was used to profile smallholder farmers, as well as, in describing the existing maize food systems at Mqanduli. The binary logistic regression model was used to analyse the variables that had influenced the smallholder famers’ participation in markets. Descriptive results revealed that, smallholder maize farmers in Mqanduli are characterised by high participation in both local and regional markets. Moreover, they utilized both community and regional food systems. Logistic regression results indicated that, out of 11 variables included in the analysis as factors influencing farmers’ participation, 6 of them (age, level of education, market information, distance, access to credit and extension visit) were found to be significant and 5 (gender, amount of land, transport availability etc) were not significant. However, access to credit and distance were found to be the most significant variables, showing a positive relationship to smallholder maize producer`s market participation. Therefore, it was recommended that, there must be more investment in research by government and policy makers when it comes to food systems especially in rural areas, to enhance smallholders’ livelihood. More access to credit is also needed by farmers in order to be able to market their produces.
- Full Text:
Relationship between alcohol use patterns and knowledge of alcohol-attributable health conditions among undergraduate students' at a university in the Eastern Cape
- Authors: Mandeya, Andrew
- Date: 2018
- Subjects: Drinking of alcoholic beverages College students--Alcohol use
- Language: English
- Type: Thesis , Masters , Public Health
- Identifier: http://hdl.handle.net/10353/11128 , vital:37173
- Description: Background: Alcohol use prevalence has been found to be higher than 50 percent at some universities in South Africa. It is against this background that this study aimed to establish the relationship between alcohol use, knowledge of alcohol-attributable health conditions and biographical characteristics. Literature review: The study was based on a review of literature on prevalence and patterns of alcohol use among university students, knowledge of alcohol-attributable chronic diseases, foetal alcohol syndrome, sexual and reproductive health and alcohol use measurement. Methodology: Data were collected from 213 undergraduate students enrolled for the Statistics service courses on two campuses of the same university. The Mann-Whitney normal approximation and the Kruskal-Wallis tests were used to compare health knowledge across levels of alcohol use and biographical characteristics. The chi-squared test and multiple logistic regression analysis were used to determine the significance and patterns of associations between alcohol use and health knowledge and biographical characteristics. Results: The prevalence rates of alcohol use and risky alcohol use were found to be 58.2 percent and 42.7 percent, respectively. The mean health knowledge was 42.9 percent, which, is rather low. Males [OR=0.3; 95 percentCI (0.18; 0.68)], returning students [OR=0.5; 95 percentCI (0.25; 0.94)] and those with employed fathers [OR=2.3; 95 percentCI (1.19; 4.47)] were found to be at a higher risk of alcohol use. Health knowledge was significantly higher among alcohol users (Z=-2.7; p=0.0074) and those whose fathers had a post matric education (𝜒2=6.4; p=0.0410) and/or employment (Z=-2.7; p=0.0064). Conclusion: While prevalence rates of alcohol use and risky alcohol were high, health knowledge was disappointingly low. This suggests need for interventions designed to minimise alcohol use while at the same time increasing health knowledge.
- Full Text:
- Authors: Mandeya, Andrew
- Date: 2018
- Subjects: Drinking of alcoholic beverages College students--Alcohol use
- Language: English
- Type: Thesis , Masters , Public Health
- Identifier: http://hdl.handle.net/10353/11128 , vital:37173
- Description: Background: Alcohol use prevalence has been found to be higher than 50 percent at some universities in South Africa. It is against this background that this study aimed to establish the relationship between alcohol use, knowledge of alcohol-attributable health conditions and biographical characteristics. Literature review: The study was based on a review of literature on prevalence and patterns of alcohol use among university students, knowledge of alcohol-attributable chronic diseases, foetal alcohol syndrome, sexual and reproductive health and alcohol use measurement. Methodology: Data were collected from 213 undergraduate students enrolled for the Statistics service courses on two campuses of the same university. The Mann-Whitney normal approximation and the Kruskal-Wallis tests were used to compare health knowledge across levels of alcohol use and biographical characteristics. The chi-squared test and multiple logistic regression analysis were used to determine the significance and patterns of associations between alcohol use and health knowledge and biographical characteristics. Results: The prevalence rates of alcohol use and risky alcohol use were found to be 58.2 percent and 42.7 percent, respectively. The mean health knowledge was 42.9 percent, which, is rather low. Males [OR=0.3; 95 percentCI (0.18; 0.68)], returning students [OR=0.5; 95 percentCI (0.25; 0.94)] and those with employed fathers [OR=2.3; 95 percentCI (1.19; 4.47)] were found to be at a higher risk of alcohol use. Health knowledge was significantly higher among alcohol users (Z=-2.7; p=0.0074) and those whose fathers had a post matric education (𝜒2=6.4; p=0.0410) and/or employment (Z=-2.7; p=0.0064). Conclusion: While prevalence rates of alcohol use and risky alcohol were high, health knowledge was disappointingly low. This suggests need for interventions designed to minimise alcohol use while at the same time increasing health knowledge.
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Risk factors of cardio-metabolic diseases among student nurses at Lilitha College of Nursing, East London, South Africa
- Authors: Mkanzi, Noluthando
- Date: 2018
- Subjects: Risk assessment Cardiovascular system -- Diseases Human physiology
- Language: English
- Type: Thesis , Masters , MCur
- Identifier: http://hdl.handle.net/10353/12924 , vital:39404
- Description: Background: Non-communicable diseases are a growing public health concern and its prevalence is escalating exponentially, with a high frequency of morbidity, premature mortality, disability and loss of productivity. Since health education has become an important part of medical care, student nurses are potentially well suited to assist with the combat of these diseases. Early identification and treatment of modifiable risk factors among young adults would reduce the risk of developing cardio-metabolic diseases, thus, promoting health, prolonging life as well as saving costs related to healthcare. Objective: This study aimed to investigate the prevalence of cardio-metabolic risk factors among student nurses. Method: This was a descriptive cross sectional study, involving a convenience sample of 228 students during the educational year of 2017-2018 at Lilitha Collegeof Nursing in East London, South Africa. The WHO STEPwise standardized questionnaire was used to collect information on socio-demographic data (age, gender, year of study) and behavioural characteristics (smoking, alcohol consumption, physical inactivity, and dietary intake) of the participants. Anthropometric screening included measurement of height, weight and waist circumference. The biochemical screening included measurement of blood pressure and determination of fasting blood glucose concentration. Only students with complete data set were included in the data analysis. Statistical Package for Social Science (SPSS) version 23.0 was employed for descriptive and inferential analysis. Results: About half (41.7 percent) of the study participants were between the ages of 21 to 25 years and majority were females (67.5 percent).The prevalence of overweight and obesity were found to be 33 percent and 44 percent respectively. The prevalence of overweight was higher in males (44.6 percent), while females (53.9 percent) had higher prevalence of obesity. Female gender and increasing age are the only independent predictors of obesity. Results on blood pressure measurement showed that 25 percent of the participants had elevated blood pressure, and 22 percent were on stage 1 of hypertension while 2 percent were on stage 2. According to Joint National Committee on hypertension (JNC)’s criteria for defining hypertension, 44 percent of the participants had pre hypertension and 11percent had hypertension, diabetes and vegetables consumption were statistically associated with hypertension. The prevalence of pre-diabetes and diabetes was 6 percent and 7 percent respectively. Only abdominal obesity measured by waistto- hip ratio had a significant relationship with diabetes. Just 4.8 percent of the participants smoked daily and 33.3 percent consumed alcohol. Regarding physical activity, males were more active (60.8 percent) compared to females (54.8 percent). Conclusion: A high burden of overweight, obesity, and physical inactivity was observed among student nurses in East London. Screening for cardio-metabolic risk factors (CMRFs) among nursing students and implementation of intervention programs are recommended. Programs to raise awareness about CMRFs, encourage young adult students to adopt a healthy dietary behaviour and promote physical exercise should be initiated.
- Full Text:
- Authors: Mkanzi, Noluthando
- Date: 2018
- Subjects: Risk assessment Cardiovascular system -- Diseases Human physiology
- Language: English
- Type: Thesis , Masters , MCur
- Identifier: http://hdl.handle.net/10353/12924 , vital:39404
- Description: Background: Non-communicable diseases are a growing public health concern and its prevalence is escalating exponentially, with a high frequency of morbidity, premature mortality, disability and loss of productivity. Since health education has become an important part of medical care, student nurses are potentially well suited to assist with the combat of these diseases. Early identification and treatment of modifiable risk factors among young adults would reduce the risk of developing cardio-metabolic diseases, thus, promoting health, prolonging life as well as saving costs related to healthcare. Objective: This study aimed to investigate the prevalence of cardio-metabolic risk factors among student nurses. Method: This was a descriptive cross sectional study, involving a convenience sample of 228 students during the educational year of 2017-2018 at Lilitha Collegeof Nursing in East London, South Africa. The WHO STEPwise standardized questionnaire was used to collect information on socio-demographic data (age, gender, year of study) and behavioural characteristics (smoking, alcohol consumption, physical inactivity, and dietary intake) of the participants. Anthropometric screening included measurement of height, weight and waist circumference. The biochemical screening included measurement of blood pressure and determination of fasting blood glucose concentration. Only students with complete data set were included in the data analysis. Statistical Package for Social Science (SPSS) version 23.0 was employed for descriptive and inferential analysis. Results: About half (41.7 percent) of the study participants were between the ages of 21 to 25 years and majority were females (67.5 percent).The prevalence of overweight and obesity were found to be 33 percent and 44 percent respectively. The prevalence of overweight was higher in males (44.6 percent), while females (53.9 percent) had higher prevalence of obesity. Female gender and increasing age are the only independent predictors of obesity. Results on blood pressure measurement showed that 25 percent of the participants had elevated blood pressure, and 22 percent were on stage 1 of hypertension while 2 percent were on stage 2. According to Joint National Committee on hypertension (JNC)’s criteria for defining hypertension, 44 percent of the participants had pre hypertension and 11percent had hypertension, diabetes and vegetables consumption were statistically associated with hypertension. The prevalence of pre-diabetes and diabetes was 6 percent and 7 percent respectively. Only abdominal obesity measured by waistto- hip ratio had a significant relationship with diabetes. Just 4.8 percent of the participants smoked daily and 33.3 percent consumed alcohol. Regarding physical activity, males were more active (60.8 percent) compared to females (54.8 percent). Conclusion: A high burden of overweight, obesity, and physical inactivity was observed among student nurses in East London. Screening for cardio-metabolic risk factors (CMRFs) among nursing students and implementation of intervention programs are recommended. Programs to raise awareness about CMRFs, encourage young adult students to adopt a healthy dietary behaviour and promote physical exercise should be initiated.
- Full Text:
Rose-scented geranium oil yield and composition as affected by leaf age, herbage drying and paclobutrazol
- Authors: Dyafta, Viwe
- Date: 2018
- Subjects: Essences and essential oils Rose geranium oil
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/10747 , vital:35733
- Description: Essential oil of rose scented-geranium is highly versatile and this makes it a very important essential oil in aromatherapy, medicine and cosmetics as well as in flavouring of food and drinks for different industries. The value of the essential oil is directly related to the quality of the oil. Therefore, it is important that the geranium growers take good care of agricultural practices in the production of essential oils as it is a crucial step where oil quality and yield is either obtained or lost. Thus, growing conditions and harvesting time must be cautiously established and controlled including herbage drying to ensure optimum yields and high quality of rose-scented geranium oil. The geranium oil production industry in South Africa is still expanding and oil yield & quality variation is important. This study was undertaken to determine the effects of herbage drying and method, leaf age and paclobutrazol concentrations on oil yield and quality of rose-scented geranium. The responses of oil yield and quality to drying effect was conducted on plant materials which were harvested from the University of Fort Hare Research Farm and glasshouse in December 2014 and October 2015. To determine the effect of drying method on essential oil yield and composition of rose-scented geranium the harvested leaves were dried in direct sunlight (20-35℃) and in a shade conditions (25℃/room temperature). Essential oil was obtained by hydro-distillation using a Clevenger apparatus. The oil samples were analysed by gas chromatography (GC) at the Dohne Agricultural institute. The major components of the oil conducted under the shade method were Linalool (5.58 percent), Menthone (0.68 percent), Citronellol (36.14 percent), Geraniol (7.29 percent), CitronellylFormate (15.39 percent) and GeranylFormate (3.30 percent), whereas those that were sun dried comprised of Linalool (3.56percent), Menthone (0.76 percent), Citronellol (32.25 percent), Geraniol (6.49 percent), CitronellylFormate (14.84 percent) and GeranylFormate (3.15 percent). The analysis of variance showed that freshly dried herbage followed by shade drying is suitable for highest oil yield. In addition, changes in essential oil composition and oil yield with leaf age in rose-scented geranium (Pelargonium capitatum x P. radens cv. Rose) were investigated in a glasshouse of the University of Fort Hare, during January to April and April to August 2012. The plants were allowed to grow to about 12-leaf stage. From top to bottom, the leaves were put into five groups (each group comprising two successive leaves, Pairs 1, 2, 3, 4 and 5). Leaf growth (leaf fresh and dry mass), and essential oil yield and composition data were collected and compared. The results indicated that, leaf fresh and dry mass data were significantly lower in the top-most (youngest leaves) as compared with the rest of the leaf pairs harvested. Essential oil in the youngest leaves was colourless, but as the leaves advanced with age, the oil tended to have a blue-green colour. Oil content (on dry mass basis) from the top to bottom, for Leaf Pairs 1, 2, 3, 4, and 5 were about 7.0, 4.9, 3.2, 2.4, 1.9 percent, respectively. Oil yield showed a significant increase in the second youngest pair of leaves and progressively declined, resulting in a significant lower yield in the oldest leaves. Leaf Pairs 1, 2, 3, 4 and 5, contributed about 19.3, 22.0, 17.71, 12.03 and 8.5 percent of the total yield per branch, respectively. Citronellol:Geraniol ratio was significantly lower in the young leaves than in the old leaves. Linalool and Geranylformate concentrations were the highest in the youngest leaves, and the opposite was observed in isomenthone. Other essential oil components did respond to leaf age. In support of research by Góra et al. (2002), Motsa et al. (2006) and Southwell and Stiff (1989), the current results indicate that early leaf age affects essential oil yield and composition. Thus, shorter regrowth cycles would increase essential oil yield and quality of rose-scented geranium. The paclobutrazol experiment was conducted in a glasshouse at the University of Fort Hare, Alice. A randomized complete block design with four replications was applied. One month after cutting back of the plants, PBZ was applied at the rates of 0, 100, 200 and 300 mg/l on the regrowth and harvested at four months of age. Data, such as chlorophyll content, plant circumference, plant height, fresh and dry mass and oil composition, were determined. The results highlighted that with an increase in PBZ concentration, total herbage mass and plant height tended to decline (Esmaielpour et al., 2011). Thus, in most cases herbage fresh and dry weight of treated plants had lower weight than the control. Paclobutrazol significantly reduced canopy circumference. There was no significant difference (P< 0.05) in oil yield and composition. Furthermore, observations showed that plants receiving PBZ had a deep green colour although the chlorophyll data did not show a significant difference. These results clearly show that PBZ helps geranium plants with compact canopy, which would enable farmers to increase income by increasing planting density, reducing distillation cost of the herbage volume and mass without reducing oil yield per plant. The findings, add another dimension to practical use of this hormone for commercial cultivation.
- Full Text:
- Authors: Dyafta, Viwe
- Date: 2018
- Subjects: Essences and essential oils Rose geranium oil
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/10747 , vital:35733
- Description: Essential oil of rose scented-geranium is highly versatile and this makes it a very important essential oil in aromatherapy, medicine and cosmetics as well as in flavouring of food and drinks for different industries. The value of the essential oil is directly related to the quality of the oil. Therefore, it is important that the geranium growers take good care of agricultural practices in the production of essential oils as it is a crucial step where oil quality and yield is either obtained or lost. Thus, growing conditions and harvesting time must be cautiously established and controlled including herbage drying to ensure optimum yields and high quality of rose-scented geranium oil. The geranium oil production industry in South Africa is still expanding and oil yield & quality variation is important. This study was undertaken to determine the effects of herbage drying and method, leaf age and paclobutrazol concentrations on oil yield and quality of rose-scented geranium. The responses of oil yield and quality to drying effect was conducted on plant materials which were harvested from the University of Fort Hare Research Farm and glasshouse in December 2014 and October 2015. To determine the effect of drying method on essential oil yield and composition of rose-scented geranium the harvested leaves were dried in direct sunlight (20-35℃) and in a shade conditions (25℃/room temperature). Essential oil was obtained by hydro-distillation using a Clevenger apparatus. The oil samples were analysed by gas chromatography (GC) at the Dohne Agricultural institute. The major components of the oil conducted under the shade method were Linalool (5.58 percent), Menthone (0.68 percent), Citronellol (36.14 percent), Geraniol (7.29 percent), CitronellylFormate (15.39 percent) and GeranylFormate (3.30 percent), whereas those that were sun dried comprised of Linalool (3.56percent), Menthone (0.76 percent), Citronellol (32.25 percent), Geraniol (6.49 percent), CitronellylFormate (14.84 percent) and GeranylFormate (3.15 percent). The analysis of variance showed that freshly dried herbage followed by shade drying is suitable for highest oil yield. In addition, changes in essential oil composition and oil yield with leaf age in rose-scented geranium (Pelargonium capitatum x P. radens cv. Rose) were investigated in a glasshouse of the University of Fort Hare, during January to April and April to August 2012. The plants were allowed to grow to about 12-leaf stage. From top to bottom, the leaves were put into five groups (each group comprising two successive leaves, Pairs 1, 2, 3, 4 and 5). Leaf growth (leaf fresh and dry mass), and essential oil yield and composition data were collected and compared. The results indicated that, leaf fresh and dry mass data were significantly lower in the top-most (youngest leaves) as compared with the rest of the leaf pairs harvested. Essential oil in the youngest leaves was colourless, but as the leaves advanced with age, the oil tended to have a blue-green colour. Oil content (on dry mass basis) from the top to bottom, for Leaf Pairs 1, 2, 3, 4, and 5 were about 7.0, 4.9, 3.2, 2.4, 1.9 percent, respectively. Oil yield showed a significant increase in the second youngest pair of leaves and progressively declined, resulting in a significant lower yield in the oldest leaves. Leaf Pairs 1, 2, 3, 4 and 5, contributed about 19.3, 22.0, 17.71, 12.03 and 8.5 percent of the total yield per branch, respectively. Citronellol:Geraniol ratio was significantly lower in the young leaves than in the old leaves. Linalool and Geranylformate concentrations were the highest in the youngest leaves, and the opposite was observed in isomenthone. Other essential oil components did respond to leaf age. In support of research by Góra et al. (2002), Motsa et al. (2006) and Southwell and Stiff (1989), the current results indicate that early leaf age affects essential oil yield and composition. Thus, shorter regrowth cycles would increase essential oil yield and quality of rose-scented geranium. The paclobutrazol experiment was conducted in a glasshouse at the University of Fort Hare, Alice. A randomized complete block design with four replications was applied. One month after cutting back of the plants, PBZ was applied at the rates of 0, 100, 200 and 300 mg/l on the regrowth and harvested at four months of age. Data, such as chlorophyll content, plant circumference, plant height, fresh and dry mass and oil composition, were determined. The results highlighted that with an increase in PBZ concentration, total herbage mass and plant height tended to decline (Esmaielpour et al., 2011). Thus, in most cases herbage fresh and dry weight of treated plants had lower weight than the control. Paclobutrazol significantly reduced canopy circumference. There was no significant difference (P< 0.05) in oil yield and composition. Furthermore, observations showed that plants receiving PBZ had a deep green colour although the chlorophyll data did not show a significant difference. These results clearly show that PBZ helps geranium plants with compact canopy, which would enable farmers to increase income by increasing planting density, reducing distillation cost of the herbage volume and mass without reducing oil yield per plant. The findings, add another dimension to practical use of this hormone for commercial cultivation.
- Full Text:
Ruthenium (II) complexes of mixed bipyridyl and dithiolate/thiourea ligands :|bsynthesis, characterization, photophysical and electrochemical studies
- Authors: Nkombi, Pelokazi
- Date: 2018
- Subjects: Ruthenium Ruthenium compounds Ligands
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/10134 , vital:35358
- Description: Energy is one of the most important factor to influence human lives. The increased in energy demand as well as the detrimental effects posed by emission of greenhouse gases due to continue use of fossil fuels for electricity generation has led to a renewed focus on energy production using renewable energy sources which are relatively cheap, clean and environmentally sustainable. Among the various renewable energy sources used so far, the Dye Synthesized Solar Cells (DSSCs), a form of photovoltaic device is reported for their better efficiencies despite their low cost of production and ability to work relatively under low light conditions. A recent report on the solar-to-electricity conversion efficiency of a typical DSSC sensitizer made from zinc based porphyrin dye coupled with sintered titanium(IV) oxide as semiconductor was 13 percent. In this study, 2,2-bipyridyl-4,4-dicarboxylic acid (bpydc) was used as mixed ligand and four dithiolate ligands; L1 = dipotassium ethoxycarbonyl-1-cyanoethylene-2,2-dithiolate, L2 = dipotassium bis(ethoxycarbonyl)ethane-2,2-dithiolate, L3 = dipotassium cyanodithio imidocarbonate and L4 = dipotassium 2,2-dicyanoethylene-2,2-dithiolate were synthesized while four alkyl thiourea ligands, L5 = 1,3-dimethyl thiourea, L6 = 1,3-diethyl thiourea, L7 = 1,3-diisopropyl thiourea and L8 = 1-methyl thiourea were purchased and used as supplied without further purification. These ligands were used to prepare eight ruthenium(II) complexes of mixed bipyridyl/dithiolate/thiourea. The compounds were characterised by elemental analysis and spectroscopic techniques, namely: Fourier transform infrared (FTIR), Nuclear Magnetic Resonance (NMR), ultraviolet-visible and photoluminescence (PL). Cyclic voltammetry (CV) and square wave voltammetry (SWV) were used for the electrochemical studies. Photoluminescence and UV-Vis spectroscopies were used for geometric and photophysical studies of the complexes respectively. FTIR spectra confirmed presence of functional groups in ligands and coordination of these ligands to ruthenium(II) ions to form complexes. The UV-Vis confirmed that the Ru(II) dithiolene complexes exhibited square planar geometries while the Ru(II) thiourea complexes gave octahedral geometries, this was deduced from the transitions assigned to the complexes. All the ruthenium(II) complexes synthesized showed photoluminescence properties that are suitable for light harvesting and application for dye-sensitized solar cells. Cyclic and square wave voltammetry show Ru(II) thiourea complexes have better redox properties when compared to Ru(II) dithiolate complexes which is ascribed to ligand strength field possibly due to contribution from the two bonded NCS groups.
- Full Text:
- Authors: Nkombi, Pelokazi
- Date: 2018
- Subjects: Ruthenium Ruthenium compounds Ligands
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/10134 , vital:35358
- Description: Energy is one of the most important factor to influence human lives. The increased in energy demand as well as the detrimental effects posed by emission of greenhouse gases due to continue use of fossil fuels for electricity generation has led to a renewed focus on energy production using renewable energy sources which are relatively cheap, clean and environmentally sustainable. Among the various renewable energy sources used so far, the Dye Synthesized Solar Cells (DSSCs), a form of photovoltaic device is reported for their better efficiencies despite their low cost of production and ability to work relatively under low light conditions. A recent report on the solar-to-electricity conversion efficiency of a typical DSSC sensitizer made from zinc based porphyrin dye coupled with sintered titanium(IV) oxide as semiconductor was 13 percent. In this study, 2,2-bipyridyl-4,4-dicarboxylic acid (bpydc) was used as mixed ligand and four dithiolate ligands; L1 = dipotassium ethoxycarbonyl-1-cyanoethylene-2,2-dithiolate, L2 = dipotassium bis(ethoxycarbonyl)ethane-2,2-dithiolate, L3 = dipotassium cyanodithio imidocarbonate and L4 = dipotassium 2,2-dicyanoethylene-2,2-dithiolate were synthesized while four alkyl thiourea ligands, L5 = 1,3-dimethyl thiourea, L6 = 1,3-diethyl thiourea, L7 = 1,3-diisopropyl thiourea and L8 = 1-methyl thiourea were purchased and used as supplied without further purification. These ligands were used to prepare eight ruthenium(II) complexes of mixed bipyridyl/dithiolate/thiourea. The compounds were characterised by elemental analysis and spectroscopic techniques, namely: Fourier transform infrared (FTIR), Nuclear Magnetic Resonance (NMR), ultraviolet-visible and photoluminescence (PL). Cyclic voltammetry (CV) and square wave voltammetry (SWV) were used for the electrochemical studies. Photoluminescence and UV-Vis spectroscopies were used for geometric and photophysical studies of the complexes respectively. FTIR spectra confirmed presence of functional groups in ligands and coordination of these ligands to ruthenium(II) ions to form complexes. The UV-Vis confirmed that the Ru(II) dithiolene complexes exhibited square planar geometries while the Ru(II) thiourea complexes gave octahedral geometries, this was deduced from the transitions assigned to the complexes. All the ruthenium(II) complexes synthesized showed photoluminescence properties that are suitable for light harvesting and application for dye-sensitized solar cells. Cyclic and square wave voltammetry show Ru(II) thiourea complexes have better redox properties when compared to Ru(II) dithiolate complexes which is ascribed to ligand strength field possibly due to contribution from the two bonded NCS groups.
- Full Text:
School principals' leadership behaviours in relation to teacher job dissatisfaction : a case of three rural schools in the Butterworth Education District
- Authors: Nohako, Siphumle
- Date: 2018
- Subjects: School principals Teacher-administrator relationships Teachers -- Job satisfaction
- Language: English
- Type: Thesis , Masters , MEd.
- Identifier: http://hdl.handle.net/10353/11216 , vital:37320
- Description: There is an increasing dissatisfaction among teachers in South Africa. Teacher job dissatisfaction has been found to have negative impact on how teachers perform their jobs, is likely to influence teachers to leaving the teaching profession and impact negatively on learner achievement. Finding ways to combat the problems is of utmost importance. Leadership behaviours of school principals have been found to be one of the key factors that positively affect teacher job dissatisfaction. This qualitative study sought to understand leadership behaviours employed by rural school principals in relation to teacher job dissatisfaction. This was a case study of three schools in the Butterworth Education District in the Eastern Cape Province. A total of three principals and twelve teachers participated in the study. Semi-structured interviews and documentary analysis were data collection instruments utilised in this study. House’s Path Goal Theory was identified as the relevant theory for understanding school principals’ leadership behaviours in relation to teacher job dissatisfaction. Findings revealed that, school principals are aware of the manifestations of teacher job dissatisfaction at their schools. However, teacher job satisfaction does not feature as an agenda item in both staff and school management meetings. Moreover school principals were found to be employing various leadership behaviours to respond to different manifestations of teacher job dissatisfaction. Leadership behaviours like participative and transformational were found to have a positive impact on teacher job dissatisfaction. Directive and laissez-faire were found not suitable in improving teacher job dissatisfaction. Findings also unearthed tensions between school principals’ leadership behaviours and teachers’ expectations on how principals should lead in relation to teacher job dissatisfaction. This study proposes that, as leaders school principals should act in both formal and informal ways to build teacher commitment in their organizations and influence teachers to achieve the goals and objectives of the school. School principals should create platforms where teacher job dissatisfaction is discussed and strategies to improve it are explored. This would help them to be aware of how their leadership behaviours impact on teacher job satisfaction and thereby make conscientious decisions to improve the level of teacher job dissatisfaction.
- Full Text:
- Authors: Nohako, Siphumle
- Date: 2018
- Subjects: School principals Teacher-administrator relationships Teachers -- Job satisfaction
- Language: English
- Type: Thesis , Masters , MEd.
- Identifier: http://hdl.handle.net/10353/11216 , vital:37320
- Description: There is an increasing dissatisfaction among teachers in South Africa. Teacher job dissatisfaction has been found to have negative impact on how teachers perform their jobs, is likely to influence teachers to leaving the teaching profession and impact negatively on learner achievement. Finding ways to combat the problems is of utmost importance. Leadership behaviours of school principals have been found to be one of the key factors that positively affect teacher job dissatisfaction. This qualitative study sought to understand leadership behaviours employed by rural school principals in relation to teacher job dissatisfaction. This was a case study of three schools in the Butterworth Education District in the Eastern Cape Province. A total of three principals and twelve teachers participated in the study. Semi-structured interviews and documentary analysis were data collection instruments utilised in this study. House’s Path Goal Theory was identified as the relevant theory for understanding school principals’ leadership behaviours in relation to teacher job dissatisfaction. Findings revealed that, school principals are aware of the manifestations of teacher job dissatisfaction at their schools. However, teacher job satisfaction does not feature as an agenda item in both staff and school management meetings. Moreover school principals were found to be employing various leadership behaviours to respond to different manifestations of teacher job dissatisfaction. Leadership behaviours like participative and transformational were found to have a positive impact on teacher job dissatisfaction. Directive and laissez-faire were found not suitable in improving teacher job dissatisfaction. Findings also unearthed tensions between school principals’ leadership behaviours and teachers’ expectations on how principals should lead in relation to teacher job dissatisfaction. This study proposes that, as leaders school principals should act in both formal and informal ways to build teacher commitment in their organizations and influence teachers to achieve the goals and objectives of the school. School principals should create platforms where teacher job dissatisfaction is discussed and strategies to improve it are explored. This would help them to be aware of how their leadership behaviours impact on teacher job satisfaction and thereby make conscientious decisions to improve the level of teacher job dissatisfaction.
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Screening for cardiometabolic risk factors among commercial drivers in Buffalo City Metropolitan Municipality, Eastern Cape, South Africa
- Authors: Adedokun, Aanuoluwa Odunayo
- Date: 2018
- Subjects: Diabetes -- South Africa -- Eastern Cape Obesity -- South Africa -- Eastern Cape Commercial vehicles
- Language: English
- Type: Thesis , Masters , Nursing Science
- Identifier: http://hdl.handle.net/10353/10431 , vital:35463
- Description: Cardio-metabolic risk factors are the aggregates of conditions that increase the susceptibility of developing cardio-metabolic diseases such as cardiovascular diseases (CVD) and diabetes. This includes insulin resistance, obesity, hyperglyceamia, dyslipoproteinemia, hyperinsulinemia and hypertension. This condition are worsen by smoking and physical inactivity as they mostlyare not easily detected. This was a cross-sectional survey of 403 commercial taxi drivers at ten different taxi ranks in BCMM. The study utilized a convenient sampling technique for the participants of the study. The WHO STEPwise approach was used for data collection. The WHO STEPwise questionnaire was used for a face-to-face interview. Socio-demographic (sex, age, marital status, driving experience, income) and behavioural characteristics (smoking, alcohol consumption, consumption of sweet drinks, physical activity, and dietary intake) of participants were obtained. Also, objective reports concerning anthropometric measurements (weight, height, waist and hip circumference), blood pressure and biochemical measurement that is the blood glucose measurement. All anthropometric measurements were taken following a standard procedure using a Lufkin nonextensible flexible anthropometric tape (W606PM), Rosscraft, Canada and a SECA weighing scale and stadiometer (Hamburg, Germany). Blood pressure was checked also in accordance with standard protocols using a Medic+ Digital Blood Pressure Monitor Model 1219 (Hamburg, Germany). A validated ACCU-CHEK glucose monitoring apparatus (Mannheim, Germany) wasused for blood glucose measurement. Overweight and obesity was defined as a body mass index (BMI) of 25.0 kg/m2 –29.9 kg/m2 and≥ 30 kg/m2, respectively. Pre-hypertension was defined according JNC-8 criteria a systolic blood pressure of 120- 139 mmHg and diastolic of BP 80-89 mmHg while hypertension was defined as an average of two systolic BP ≥140mmHg and/or diastolic BP of ≥90mmHg or a history of hypertension or anti hypertensive medication use. Diabetes status was determined using the fasting blood glucose (FBG) test and defined as a FBG ≥ 7.0mmol/L or self-reports of history or current diabetes medication use (treatment), while pre-diabetes was defined as a FBG of 5.6-6.9mmol/L. Awareness of diabetes was defined as self-reported history of diabetes among the people with diabetes. Metabolic syndrome status was determined according to the National agreement among makers of abdominal obesity. Statistical Package for Social Sciences (SPSS) was used for data analysis. The mean age of the participants was 43.3 (SD12.5) years. The prevalence of overweight and obesity was 34.0 percent and 38.0 percent, respectively. Age, marital status, period of driving, not-smoking, hypertension and diabetes were significantly associated with obesity. In logistic regression analysis, after adjusting for confounding factors, only age (OR 1.6, CI 1.0-2.7), hypertension (OR 3.6, CI 2.3-5.7) and non-smoking (OR 2.0, CI 1.3-3.1) were the independent and significant determinants of obesity. The prevalence rates of abdominal obesity by waist circumference (WC), waist-hip-ratio (WHR), waist-to-height ratio (WHtR) and neck circumference (NC) were 61.5 percent, 67.5 percent, 80.1 percent and 65.3 percent, respectively. A strong correlations exists between WHR and WC (>0.64); and WHtR and WC (>0.62). There exists a good agreement between WC and WHR. Also, a moderate agreement exists between WC and WHtR, WC and NC, WHR and WHtR, and WHtR and NC. The prevalence of above normal body composition for participants with hypertension was 71.0 percent, 65.9 percent, 63.2 percent and 66.5 percent by WC, WHR, WHtR and NC, respectively. For diabetes, the prevalence was 20.6 percent, 19.4 percent, 17.0 percent and 18.6 percent by WC, WHR, WHtR and NC, respectively. Waist circumference was a stronger predictor of hypertension and diabetics, with odds ratio of 3.7 (95 percent CI: 2.3-6.1 and 3.1 (95 percent CI: 1.6-6.0), compared to NC, with odds ratio of 1.7 (95 percent CI: 1.1-2.8). The prevalence of pre-hypertension was 33.7 percent and hypertension was 57.0 percent. Age, marital status, level of education, period of driving, obesity, alcohol, sweet drinks consumption and diabetes were significantly associated with hypertension. After adjusting for confounders, age >35 years (P=0.004), obesity and alcohol use (P<0.001), period of driving >5years (p=0.028) and diabetes (P=0.003) were significant predictors of hypertension. Prevalence of pre-diabetes and diabetes was 17 percent and 16 percent, respectively. Of those who were diabetic (n=63), the majority were aware of their diabetes status (n=43) and were on treatment (n=30). Age, marital status, level of education, period of driving, obesity, sweet drinks consumption, physical activities and hypertension were significantly associated with diabetes. Only age >35 (AOR= 3.6, CI 1.2-11.1), ever married (AOR= 3.3, CI 1.5-7.0) and hypertension (AOR= 3.4, CI 1.7-6.8) were the independent predictors of diabetes after adjusting for confounders. The prevalence of metabolic syndrome was 22 percent. Age, marital status, level of education, physical inactivity and period of driving were significantly associated with metabolic syndrome. After adjusting for confounders, only age above 35 years (Adjusted Odd Ratio [AOR] =3.8, CI=1.4- 9.5), ever married (AOR=3.0, CI=1.6-5.3) and period of driving above five years (AOR= 2.4, CI=1.2-4.7) were the significant and independent predictors of metabolic syndrome. About 30 percent of the participants were daily smokers, 37 percent consume alcohol regularly and only 18 percent were physically active, while 82 percent were physically inactive. In conclusion, there was a high prevalence of obesity, hypertension and diabetes among the commercial drivers in this setting, which is associated with unhealthy lifestyles (smoking, excessive alcohol consumption, physical inactivity). Interventions aimed at promoting cardiovascular health of commercial drivers such as health education and workplace screening, should prioritize weight reduction, healthy eating and physical activity in this population.
- Full Text:
- Authors: Adedokun, Aanuoluwa Odunayo
- Date: 2018
- Subjects: Diabetes -- South Africa -- Eastern Cape Obesity -- South Africa -- Eastern Cape Commercial vehicles
- Language: English
- Type: Thesis , Masters , Nursing Science
- Identifier: http://hdl.handle.net/10353/10431 , vital:35463
- Description: Cardio-metabolic risk factors are the aggregates of conditions that increase the susceptibility of developing cardio-metabolic diseases such as cardiovascular diseases (CVD) and diabetes. This includes insulin resistance, obesity, hyperglyceamia, dyslipoproteinemia, hyperinsulinemia and hypertension. This condition are worsen by smoking and physical inactivity as they mostlyare not easily detected. This was a cross-sectional survey of 403 commercial taxi drivers at ten different taxi ranks in BCMM. The study utilized a convenient sampling technique for the participants of the study. The WHO STEPwise approach was used for data collection. The WHO STEPwise questionnaire was used for a face-to-face interview. Socio-demographic (sex, age, marital status, driving experience, income) and behavioural characteristics (smoking, alcohol consumption, consumption of sweet drinks, physical activity, and dietary intake) of participants were obtained. Also, objective reports concerning anthropometric measurements (weight, height, waist and hip circumference), blood pressure and biochemical measurement that is the blood glucose measurement. All anthropometric measurements were taken following a standard procedure using a Lufkin nonextensible flexible anthropometric tape (W606PM), Rosscraft, Canada and a SECA weighing scale and stadiometer (Hamburg, Germany). Blood pressure was checked also in accordance with standard protocols using a Medic+ Digital Blood Pressure Monitor Model 1219 (Hamburg, Germany). A validated ACCU-CHEK glucose monitoring apparatus (Mannheim, Germany) wasused for blood glucose measurement. Overweight and obesity was defined as a body mass index (BMI) of 25.0 kg/m2 –29.9 kg/m2 and≥ 30 kg/m2, respectively. Pre-hypertension was defined according JNC-8 criteria a systolic blood pressure of 120- 139 mmHg and diastolic of BP 80-89 mmHg while hypertension was defined as an average of two systolic BP ≥140mmHg and/or diastolic BP of ≥90mmHg or a history of hypertension or anti hypertensive medication use. Diabetes status was determined using the fasting blood glucose (FBG) test and defined as a FBG ≥ 7.0mmol/L or self-reports of history or current diabetes medication use (treatment), while pre-diabetes was defined as a FBG of 5.6-6.9mmol/L. Awareness of diabetes was defined as self-reported history of diabetes among the people with diabetes. Metabolic syndrome status was determined according to the National agreement among makers of abdominal obesity. Statistical Package for Social Sciences (SPSS) was used for data analysis. The mean age of the participants was 43.3 (SD12.5) years. The prevalence of overweight and obesity was 34.0 percent and 38.0 percent, respectively. Age, marital status, period of driving, not-smoking, hypertension and diabetes were significantly associated with obesity. In logistic regression analysis, after adjusting for confounding factors, only age (OR 1.6, CI 1.0-2.7), hypertension (OR 3.6, CI 2.3-5.7) and non-smoking (OR 2.0, CI 1.3-3.1) were the independent and significant determinants of obesity. The prevalence rates of abdominal obesity by waist circumference (WC), waist-hip-ratio (WHR), waist-to-height ratio (WHtR) and neck circumference (NC) were 61.5 percent, 67.5 percent, 80.1 percent and 65.3 percent, respectively. A strong correlations exists between WHR and WC (>0.64); and WHtR and WC (>0.62). There exists a good agreement between WC and WHR. Also, a moderate agreement exists between WC and WHtR, WC and NC, WHR and WHtR, and WHtR and NC. The prevalence of above normal body composition for participants with hypertension was 71.0 percent, 65.9 percent, 63.2 percent and 66.5 percent by WC, WHR, WHtR and NC, respectively. For diabetes, the prevalence was 20.6 percent, 19.4 percent, 17.0 percent and 18.6 percent by WC, WHR, WHtR and NC, respectively. Waist circumference was a stronger predictor of hypertension and diabetics, with odds ratio of 3.7 (95 percent CI: 2.3-6.1 and 3.1 (95 percent CI: 1.6-6.0), compared to NC, with odds ratio of 1.7 (95 percent CI: 1.1-2.8). The prevalence of pre-hypertension was 33.7 percent and hypertension was 57.0 percent. Age, marital status, level of education, period of driving, obesity, alcohol, sweet drinks consumption and diabetes were significantly associated with hypertension. After adjusting for confounders, age >35 years (P=0.004), obesity and alcohol use (P<0.001), period of driving >5years (p=0.028) and diabetes (P=0.003) were significant predictors of hypertension. Prevalence of pre-diabetes and diabetes was 17 percent and 16 percent, respectively. Of those who were diabetic (n=63), the majority were aware of their diabetes status (n=43) and were on treatment (n=30). Age, marital status, level of education, period of driving, obesity, sweet drinks consumption, physical activities and hypertension were significantly associated with diabetes. Only age >35 (AOR= 3.6, CI 1.2-11.1), ever married (AOR= 3.3, CI 1.5-7.0) and hypertension (AOR= 3.4, CI 1.7-6.8) were the independent predictors of diabetes after adjusting for confounders. The prevalence of metabolic syndrome was 22 percent. Age, marital status, level of education, physical inactivity and period of driving were significantly associated with metabolic syndrome. After adjusting for confounders, only age above 35 years (Adjusted Odd Ratio [AOR] =3.8, CI=1.4- 9.5), ever married (AOR=3.0, CI=1.6-5.3) and period of driving above five years (AOR= 2.4, CI=1.2-4.7) were the significant and independent predictors of metabolic syndrome. About 30 percent of the participants were daily smokers, 37 percent consume alcohol regularly and only 18 percent were physically active, while 82 percent were physically inactive. In conclusion, there was a high prevalence of obesity, hypertension and diabetes among the commercial drivers in this setting, which is associated with unhealthy lifestyles (smoking, excessive alcohol consumption, physical inactivity). Interventions aimed at promoting cardiovascular health of commercial drivers such as health education and workplace screening, should prioritize weight reduction, healthy eating and physical activity in this population.
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Secrets that kill : reflections on violation of cultural rights enshrined in the constitution and human rights through traditional circumcision
- Authors: Mlisa, Lily Rose Nomfundo
- Date: 2018
- Subjects: Human rights--South Africa Circumcision Circumcision--Law and legislation
- Language: English
- Type: Thesis , Masters , Public Health
- Identifier: http://hdl.handle.net/10353/11150 , vital:37176
- Description: The study was based on four research objectives: (1) to identify philosophy, psychology, cultural reasons behind the harsh and traumatic experiences of young Xhosa boys and their mothers during ukwaluka (male circumcision) as a mark for transition to manhood; (2) to review perceptions concerning the role of mothers during the male circumcision (MC) process (3) identify cultural and psycho-social construction and meaning of MC and (4) to explore recommended possible strategies on managing MC-related traumas and deaths in the Sub-Saharan region and Eastern Cape Province in particular. Desktop literature review methodology was followed. An in depth literature review was conducted on diverse website search engines using a set of inclusion criteria. Published articles from 1995 to 2015 were selected. Thematic content analysis was used to categorise and interpret emerging themes from the reviewed articles as aligned to set research objectives. Results revealed diverse philosophical and cultural perceptions around MC, its construction and meaning among different cultures whether circumcising or non-circumcising cultures. In addition, various reasons are laid out for the harsh treatment given to initiates in different settings. Results also indicated that the MC is no longer a secret due to social media profuse publications about it. The impact of education and health care benefits around medical male circumcision (MMC) has influenced women from both non-circumcising and circumcising cultures to accept it. It is recommended that MC should continue under strict observation of prescribed protocols to lessen or prevent malpractices in the process. MMC is also highly recommended. In addition, the government and traditional leaders have to continue to conduct capacity building of traditional surgeons, prospective initiates and initiates including nurses and family members about crucial protocols and health matters around MC. Finally, results recommend best practices that could be learnt from other circumcising cultures to restore the respect of MC in the Eastern Cape, as well as inclusion of women in the MC process management.
- Full Text:
- Authors: Mlisa, Lily Rose Nomfundo
- Date: 2018
- Subjects: Human rights--South Africa Circumcision Circumcision--Law and legislation
- Language: English
- Type: Thesis , Masters , Public Health
- Identifier: http://hdl.handle.net/10353/11150 , vital:37176
- Description: The study was based on four research objectives: (1) to identify philosophy, psychology, cultural reasons behind the harsh and traumatic experiences of young Xhosa boys and their mothers during ukwaluka (male circumcision) as a mark for transition to manhood; (2) to review perceptions concerning the role of mothers during the male circumcision (MC) process (3) identify cultural and psycho-social construction and meaning of MC and (4) to explore recommended possible strategies on managing MC-related traumas and deaths in the Sub-Saharan region and Eastern Cape Province in particular. Desktop literature review methodology was followed. An in depth literature review was conducted on diverse website search engines using a set of inclusion criteria. Published articles from 1995 to 2015 were selected. Thematic content analysis was used to categorise and interpret emerging themes from the reviewed articles as aligned to set research objectives. Results revealed diverse philosophical and cultural perceptions around MC, its construction and meaning among different cultures whether circumcising or non-circumcising cultures. In addition, various reasons are laid out for the harsh treatment given to initiates in different settings. Results also indicated that the MC is no longer a secret due to social media profuse publications about it. The impact of education and health care benefits around medical male circumcision (MMC) has influenced women from both non-circumcising and circumcising cultures to accept it. It is recommended that MC should continue under strict observation of prescribed protocols to lessen or prevent malpractices in the process. MMC is also highly recommended. In addition, the government and traditional leaders have to continue to conduct capacity building of traditional surgeons, prospective initiates and initiates including nurses and family members about crucial protocols and health matters around MC. Finally, results recommend best practices that could be learnt from other circumcising cultures to restore the respect of MC in the Eastern Cape, as well as inclusion of women in the MC process management.
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Selected benefits, challenges and lessons experiences by the 2015-16 feesmustfall leaders at the University of Fort Hare (UFH), East London Campus (EL)
- Authors: Dyakumeni, Monica
- Date: 2018
- Subjects: Student movements -- South Africa Universities and colleges -- South Africa -- Eastern Cape Education, Higher -- South Africa
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/11075 , vital:37028
- Description: There is a high amount of journalistic and academic work that has been produced to highlight the various benefits, challenges and lessons the 2015-2016 #Feesmustfall movement (henceforth, FMFM) brought in its wake for South African universities affected and for South African society in general. Save for the University of the Witwatersrand (activists from Wits produced a book on their involvement in FMF), there is a dearth of academic research on the benefits, challenges and lessons of FMF as experienced by students from affected universities, in general, and student activists and leaders, in particular. The current research study was conducted to fill the above gap, and it adopted a qualitative research philosophy in the manner the research was conducted. For the purposes of this research, 10 male FMF activists from the University of Fort Hare, East London, Eastern Cape, were interviewed using an in-depth interview technique about what they regarded as benefits, challenges and lessons stemming from their involvement as leaders of the FMF protests in their campus. The findings largely set a tone of caution that there are important considerations to be made when looking at the issue of university-based protests such as FMF; in particular, the physical and psychological impacts of these protests on student leaders, or activists. The results in this study demonstrate that those who led the 2015/6 FMF protests at UFH, EL, experienced intellectual and political leadership growth as young student leaders, among some benefits. The benefits, however, were tempered by some of the traumatic and disturbing events, which exposed these leaders to, among other things, police violence, arrests and serious psychological discomfort during and even after the protests. The results also demonstrate some continuing positive impact of the FMFM on those who led the students at UFH, that is, they are today using the knowledge and lessons from FMF to make their workplaces and their political organization’s processes more robust and democratic. These findings are significant, especially for universities in South Africa, and in Africa as a whole, as there are researchers who caution that the South African university management is quick to resort to student repression during protests. The study then goes on to discuss the relevance of the findings for universities, the state and the student activists themselves. Areas for future research are also proffered.
- Full Text:
- Authors: Dyakumeni, Monica
- Date: 2018
- Subjects: Student movements -- South Africa Universities and colleges -- South Africa -- Eastern Cape Education, Higher -- South Africa
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/11075 , vital:37028
- Description: There is a high amount of journalistic and academic work that has been produced to highlight the various benefits, challenges and lessons the 2015-2016 #Feesmustfall movement (henceforth, FMFM) brought in its wake for South African universities affected and for South African society in general. Save for the University of the Witwatersrand (activists from Wits produced a book on their involvement in FMF), there is a dearth of academic research on the benefits, challenges and lessons of FMF as experienced by students from affected universities, in general, and student activists and leaders, in particular. The current research study was conducted to fill the above gap, and it adopted a qualitative research philosophy in the manner the research was conducted. For the purposes of this research, 10 male FMF activists from the University of Fort Hare, East London, Eastern Cape, were interviewed using an in-depth interview technique about what they regarded as benefits, challenges and lessons stemming from their involvement as leaders of the FMF protests in their campus. The findings largely set a tone of caution that there are important considerations to be made when looking at the issue of university-based protests such as FMF; in particular, the physical and psychological impacts of these protests on student leaders, or activists. The results in this study demonstrate that those who led the 2015/6 FMF protests at UFH, EL, experienced intellectual and political leadership growth as young student leaders, among some benefits. The benefits, however, were tempered by some of the traumatic and disturbing events, which exposed these leaders to, among other things, police violence, arrests and serious psychological discomfort during and even after the protests. The results also demonstrate some continuing positive impact of the FMFM on those who led the students at UFH, that is, they are today using the knowledge and lessons from FMF to make their workplaces and their political organization’s processes more robust and democratic. These findings are significant, especially for universities in South Africa, and in Africa as a whole, as there are researchers who caution that the South African university management is quick to resort to student repression during protests. The study then goes on to discuss the relevance of the findings for universities, the state and the student activists themselves. Areas for future research are also proffered.
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Smallholder farmers' selection criteria of maize varieties in Eastern Cape Province (Implications for adoption of GM maize) : the case of Port St. Johns, Flagstaff and Mqanduli
- Authors: Ngcinela, Siphokazi
- Date: 2018
- Subjects: Genetically modified foods
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/10178 , vital:35372
- Description: Different maize varieties are produced by smallholder farmers in Eastern Cape Province in different agro ecological zones. Government cropping programmes have been promoting the production of GM maize varieties by smallholder farmers to enhance food security. However, there is no evidence to show how smallholder farmers are selecting the maize varieties they want to produce. On the other hand, smallholder farmers are slowly adopting GM maize due to number of factors affecting them. The study adopted Cross sectional design to collect the data from smallholder farmers from the three study sites. The sample size was 704 respondents. A semi structured questionnaire was used to collect primary data from smallholder farmers in Mqanduli (Lowest rainfall), Flagstaff (moderate rainfall) Port St. Johns LM (highest rainfall), under OR Tambo DM. Multistage sampling was utilised. SPSS version 24 was used to analyse descriptive statistics and Multinomial logistic regression model. STATA version 13 was used to analyse Crag’s double hurdle model. The results showed that, farmers were producing GM maize (Ht and Bt), unimproved OPV (landrace) and improved OPV (Sahara). The majority of farmers were producing OPVs. The findings further showed that, the selection of GM maize varieties is positively related to maize threat stalk borer damage. The results indicated that, most of the respondents were not aware of the GM permit conditions thus, they failed to comply with the expected conditions. The following variables influenced the adoption and intensity of adoption of GM maize: gender, highest educational level, household size, employment status, access to land, access to market, access to credit, membership to farmers group, main source of income, farm size, and access to extension services. It was concluded that from the three study areas different maize varieties were produced. Adoption of GM maize was influenced by the number of factors. GM maize permit condition were not met by smallholder farmers. It was recommended that, research should be done on OPVs which are the most preferred varieties by smallholder farmers. Extension officers and those who are adopting GM maize should be educated and trained about GM maize permit conditions.
- Full Text:
- Authors: Ngcinela, Siphokazi
- Date: 2018
- Subjects: Genetically modified foods
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/10178 , vital:35372
- Description: Different maize varieties are produced by smallholder farmers in Eastern Cape Province in different agro ecological zones. Government cropping programmes have been promoting the production of GM maize varieties by smallholder farmers to enhance food security. However, there is no evidence to show how smallholder farmers are selecting the maize varieties they want to produce. On the other hand, smallholder farmers are slowly adopting GM maize due to number of factors affecting them. The study adopted Cross sectional design to collect the data from smallholder farmers from the three study sites. The sample size was 704 respondents. A semi structured questionnaire was used to collect primary data from smallholder farmers in Mqanduli (Lowest rainfall), Flagstaff (moderate rainfall) Port St. Johns LM (highest rainfall), under OR Tambo DM. Multistage sampling was utilised. SPSS version 24 was used to analyse descriptive statistics and Multinomial logistic regression model. STATA version 13 was used to analyse Crag’s double hurdle model. The results showed that, farmers were producing GM maize (Ht and Bt), unimproved OPV (landrace) and improved OPV (Sahara). The majority of farmers were producing OPVs. The findings further showed that, the selection of GM maize varieties is positively related to maize threat stalk borer damage. The results indicated that, most of the respondents were not aware of the GM permit conditions thus, they failed to comply with the expected conditions. The following variables influenced the adoption and intensity of adoption of GM maize: gender, highest educational level, household size, employment status, access to land, access to market, access to credit, membership to farmers group, main source of income, farm size, and access to extension services. It was concluded that from the three study areas different maize varieties were produced. Adoption of GM maize was influenced by the number of factors. GM maize permit condition were not met by smallholder farmers. It was recommended that, research should be done on OPVs which are the most preferred varieties by smallholder farmers. Extension officers and those who are adopting GM maize should be educated and trained about GM maize permit conditions.
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Social media and participatory water conservation education in rural areas : a case study of Amathole District's Local Municipalities
- Authors: Hove, Charity
- Date: 2018
- Subjects: Internet in public administration Political participation Local government -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/10073 , vital:35326
- Description: This study conducted an explanatory sequential research on local municipalities in Amathole District‘s social media use for participatory water conservation education in South Africa. Social media is regarded as a powerful tool for information dissemination, because of its incredible speed, storage capacity, and communicative ability. However, it was worth finding out if social media platforms were being utilised fully to educate communities about water conservation by these municipalities. The South African government invests in water conservation interests through legislation and prescribes that municipalities, as local governance at the grassroots level, supply water and sanitation according to national norms and standards. With reference to this, municipalities have to educate about water conservation. The prevailing water scarcity in South Africa calls for increased education and awareness creation about water conservation to communities and municipalities have to use this opportunity by using social media. Therefore, the research aimed to know if social media platforms were being used as a tool for participatory water conservation education in Amathole District‘s local municipalities. This study used purposive sampling for data collection. The first data set was collected from the local municipalities‘ social media platforms and qualitative content analysis was used for analysis to find out if the municipalities used social media for water conservation education. The second data set aimed at getting residents‘ perception towards social media use for participatory water conservation education by their municipality was collected from 383 respondents in Raymond Mhlaba Local Municipality using a questionnaire. The data from the questionnaire was analysed quantitatively using Statistical Package for Social Sciences (SPSS). The study found out that Amathole District local municipalities were not using social media for water conservation education. Most respondents from Raymond Mhlaba Local Municipality indicated lack of knowledge of their municipality‘s social media presence, while the few who were aware of the social media platforms rarely communicated with the municipality. Hence, the study recommends that municipalities should advertise their social media platforms and use them for developmental and beneficial purposes such as water conservation education.
- Full Text:
- Authors: Hove, Charity
- Date: 2018
- Subjects: Internet in public administration Political participation Local government -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/10073 , vital:35326
- Description: This study conducted an explanatory sequential research on local municipalities in Amathole District‘s social media use for participatory water conservation education in South Africa. Social media is regarded as a powerful tool for information dissemination, because of its incredible speed, storage capacity, and communicative ability. However, it was worth finding out if social media platforms were being utilised fully to educate communities about water conservation by these municipalities. The South African government invests in water conservation interests through legislation and prescribes that municipalities, as local governance at the grassroots level, supply water and sanitation according to national norms and standards. With reference to this, municipalities have to educate about water conservation. The prevailing water scarcity in South Africa calls for increased education and awareness creation about water conservation to communities and municipalities have to use this opportunity by using social media. Therefore, the research aimed to know if social media platforms were being used as a tool for participatory water conservation education in Amathole District‘s local municipalities. This study used purposive sampling for data collection. The first data set was collected from the local municipalities‘ social media platforms and qualitative content analysis was used for analysis to find out if the municipalities used social media for water conservation education. The second data set aimed at getting residents‘ perception towards social media use for participatory water conservation education by their municipality was collected from 383 respondents in Raymond Mhlaba Local Municipality using a questionnaire. The data from the questionnaire was analysed quantitatively using Statistical Package for Social Sciences (SPSS). The study found out that Amathole District local municipalities were not using social media for water conservation education. Most respondents from Raymond Mhlaba Local Municipality indicated lack of knowledge of their municipality‘s social media presence, while the few who were aware of the social media platforms rarely communicated with the municipality. Hence, the study recommends that municipalities should advertise their social media platforms and use them for developmental and beneficial purposes such as water conservation education.
- Full Text:
Social Media Conspicuous Consumptive Behaviour and Consumers’ Purchase Intentions of Luxury Goods
- Authors: Madzunya, Ntsundeni
- Date: 2018
- Subjects: Consumer behavior -- South Africa Social media -- Marketing
- Language: English
- Type: Thesis , Masters , MCom (Business Management)
- Identifier: http://hdl.handle.net/10353/13524 , vital:39676
- Description: Social media has grown to such a large extent that it has become a primary source of information among consumers online. The impact of the growth of popular social media sites such as Facebook and Instagram have allowed for interest in consumer online behaviour to increase. There is no specific social media model that can be used as a tool to understand its use and influence on conspicuous online consumption behaviour. The study aimed to develop and apply a model used to understand consumer behaviour in order to enhance the use of the communication landscape as a means to drive purchase intentions. Therefore, the purpose of this study was to investigate the effects of social media conspicuous consumptive behaviour on intention to purchase luxury goods. The primary objective of this study was to examine the effect of conspicuous consumptive behaviour facilitated by Instagram and Facebook on potential buyers’ intention to purchase luxury goods. The study also determined if Instagram and Facebook usage intensity has an influence on conspicuous consumptive behaviour. In addition, the study also examined the relationship between Instagram and Facebook eWOM credibility and conspicuous consumptive behaviour. The study was underpinned by a positivist paradigm, a quantitative approach and the appropriate descriptive research design. Data was collected from both primary and secondary sources. An online survey was conducted to collect primary data, through the use of a questionnaire developed from previous studies. The questionnaire was administered online through the Survey Monkey platform to a total of 364 respondents. Analysis and interpretation of findings was done using both the descriptive and inferential statistical measures, with the help of Statistical Package for Social Scientists (SPSS) 24 and Lisrel (version 9). The scales adopted for the study consisted of eight constructs, Instagram usage intensity, Instagram eWOM credibility, Instagram conspicuous consumptive behaviour, Instagram intention to purchase luxury goods, Facebook usage intensity, Facebook eWOM credibility, Facebook conspicuous consumptive behaviour, Facebook intention to purchase luxury goods. All the scales used in this study were found to be reliable and valid. ii Based on the 364 responses, the study found a positive relationship between both Facebook and Instagram usage intensity and conspicuous consumptive behaviour. Conversely, results showed that eWOM credibility on both Facebook and Instagram had no relationship with conspicuous consumptive behaviour. Lastly, Instagram conspicuous consumptive behaviour had a positive relationship with the intention to purchase luxury goods. A similar finding was found for Facebook conspicuous consumptive behaviour and the intention to purchase luxury goods. Luxury marketers are encouraged to formulate social media strategies that emphasise consumer involvement, engagement and trust; this, in turn, will increase total social media usage and influence. However, further research may want to include other popular social media platforms, such as Twitter and WhatsApp, to gain a wider understanding of the effect of social media conspicuous consumptive behaviour on intention to purchase luxury goods.
- Full Text:
- Authors: Madzunya, Ntsundeni
- Date: 2018
- Subjects: Consumer behavior -- South Africa Social media -- Marketing
- Language: English
- Type: Thesis , Masters , MCom (Business Management)
- Identifier: http://hdl.handle.net/10353/13524 , vital:39676
- Description: Social media has grown to such a large extent that it has become a primary source of information among consumers online. The impact of the growth of popular social media sites such as Facebook and Instagram have allowed for interest in consumer online behaviour to increase. There is no specific social media model that can be used as a tool to understand its use and influence on conspicuous online consumption behaviour. The study aimed to develop and apply a model used to understand consumer behaviour in order to enhance the use of the communication landscape as a means to drive purchase intentions. Therefore, the purpose of this study was to investigate the effects of social media conspicuous consumptive behaviour on intention to purchase luxury goods. The primary objective of this study was to examine the effect of conspicuous consumptive behaviour facilitated by Instagram and Facebook on potential buyers’ intention to purchase luxury goods. The study also determined if Instagram and Facebook usage intensity has an influence on conspicuous consumptive behaviour. In addition, the study also examined the relationship between Instagram and Facebook eWOM credibility and conspicuous consumptive behaviour. The study was underpinned by a positivist paradigm, a quantitative approach and the appropriate descriptive research design. Data was collected from both primary and secondary sources. An online survey was conducted to collect primary data, through the use of a questionnaire developed from previous studies. The questionnaire was administered online through the Survey Monkey platform to a total of 364 respondents. Analysis and interpretation of findings was done using both the descriptive and inferential statistical measures, with the help of Statistical Package for Social Scientists (SPSS) 24 and Lisrel (version 9). The scales adopted for the study consisted of eight constructs, Instagram usage intensity, Instagram eWOM credibility, Instagram conspicuous consumptive behaviour, Instagram intention to purchase luxury goods, Facebook usage intensity, Facebook eWOM credibility, Facebook conspicuous consumptive behaviour, Facebook intention to purchase luxury goods. All the scales used in this study were found to be reliable and valid. ii Based on the 364 responses, the study found a positive relationship between both Facebook and Instagram usage intensity and conspicuous consumptive behaviour. Conversely, results showed that eWOM credibility on both Facebook and Instagram had no relationship with conspicuous consumptive behaviour. Lastly, Instagram conspicuous consumptive behaviour had a positive relationship with the intention to purchase luxury goods. A similar finding was found for Facebook conspicuous consumptive behaviour and the intention to purchase luxury goods. Luxury marketers are encouraged to formulate social media strategies that emphasise consumer involvement, engagement and trust; this, in turn, will increase total social media usage and influence. However, further research may want to include other popular social media platforms, such as Twitter and WhatsApp, to gain a wider understanding of the effect of social media conspicuous consumptive behaviour on intention to purchase luxury goods.
- Full Text:
Students’ intentions and attitudes towards using Information and Communication Technology (ICT) for the purpose of counselling.
- Authors: Dlaza, Zikhona
- Date: 2018
- Subjects: Internet -- Psychological aspects Internet users -- Psychology
- Language: English
- Type: Thesis , Masters , MSoc. Sci (Psychology)
- Identifier: http://hdl.handle.net/10353/17553 , vital:41090
- Description: Information Communication Technology (ICT) is becoming popular especially within a university campus setting not only as a learning tool but also for the purpose of communication. Internationally there is an acknowledgement of the popularity of ICT in delivering mental health services. This study is built on that premise which indicates that ICT could serve as a viable tool for counselling interventions within a university setting. However, limited research has been done in this area and conflicting results have been reported especially related to gender. This study therefore aimed at exploring the intentions and attitudes of male and female students towards using ICT for counselling at a South African university. A quantitative research approach was employed to collect and analyze data. Data was collected amongst students using self-administered questionnaires with a sample of 266 (N = 266) respondents. Descriptive and inferential statistics were employed. The main findings of the study indicate that students have an intention to seek psychological help through the use of ICT counselling, which consequently positively influenced attitudes towards the utilization of ICT counselling. Results further indicate that gender and age differences amongst university students is significantly related to the intention to use ICT counselling. The information generated from this study has contributed to the limited body of literature on ICT in counselling psychology, more specifically in a university setting in South Africa. Overall, it encourages critical reflection on modern psychological practice to meet student’s needs.
- Full Text:
- Authors: Dlaza, Zikhona
- Date: 2018
- Subjects: Internet -- Psychological aspects Internet users -- Psychology
- Language: English
- Type: Thesis , Masters , MSoc. Sci (Psychology)
- Identifier: http://hdl.handle.net/10353/17553 , vital:41090
- Description: Information Communication Technology (ICT) is becoming popular especially within a university campus setting not only as a learning tool but also for the purpose of communication. Internationally there is an acknowledgement of the popularity of ICT in delivering mental health services. This study is built on that premise which indicates that ICT could serve as a viable tool for counselling interventions within a university setting. However, limited research has been done in this area and conflicting results have been reported especially related to gender. This study therefore aimed at exploring the intentions and attitudes of male and female students towards using ICT for counselling at a South African university. A quantitative research approach was employed to collect and analyze data. Data was collected amongst students using self-administered questionnaires with a sample of 266 (N = 266) respondents. Descriptive and inferential statistics were employed. The main findings of the study indicate that students have an intention to seek psychological help through the use of ICT counselling, which consequently positively influenced attitudes towards the utilization of ICT counselling. Results further indicate that gender and age differences amongst university students is significantly related to the intention to use ICT counselling. The information generated from this study has contributed to the limited body of literature on ICT in counselling psychology, more specifically in a university setting in South Africa. Overall, it encourages critical reflection on modern psychological practice to meet student’s needs.
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Sustainability challenges and community broadcasting media in Eastern Cape : a comparative study of Forte FM and Vukani FM
- Authors: Mbombo, Nothemba
- Date: 2018
- Subjects: Community radio -- South Africa -- Eastern Cape Radio stations -- South Africa -- Eastern Cape Radio in community development -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , Communication
- Identifier: http://hdl.handle.net/10353/9330 , vital:34325
- Description: This study is a qualitative study focusing on the sustainability challenges affecting the performance of community radio stations in Eastern Cape using Forte FM and Vukani FM as case studies. For the purpose of this study, in-depth interviews and focus group interviews were used to collect data and the researcher had in-depth interviews with the station managers of both radio stations. Another interview was conducted with the programme manager of the Media Development and Diversity Agency (MDDA). In addition, this study conducted one focus group interview with purposively selected participants for each community radio station to get their views on the functioning and sustainability challenges facing each of the radio station and how they see them helping their communities. The findings of the study revealed that the major sustainability challenges faced by the stations are finances and lack of resources. The lack of resources is a major problem as it reflects a lack of political will and policies that have failed to recognize the importance of communication as a social process that can help to bring change and development (Fraser & Estrada, 2003:3). As revealed by the findings of this study, the most serious challenge that both stations face is financial sustainability as they had said they struggle to function because they do not have money to pay their staff, and to pay the National Community Radio Forum (NCRF) in order to be kept on air and to deliver their content to the targeted audiences. This study also found out that the stations are not able to train their reporters while they are not getting a regular assistance from the Minister of Communications. The radio stations noted that the Department of Communications used to assist them some years ago but now support only comes from the MDDA. On the other hand, the study also revealed that the MDDA do assist the community radio stations by providing them with necessary broadcasting and transmission equipment and facilities to make sure that they stay on air. This study therefore, concludes that despite the several sustainability challenges faced by these community radio stations, they are still able to contribute to the development of their communities
- Full Text:
- Authors: Mbombo, Nothemba
- Date: 2018
- Subjects: Community radio -- South Africa -- Eastern Cape Radio stations -- South Africa -- Eastern Cape Radio in community development -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , Communication
- Identifier: http://hdl.handle.net/10353/9330 , vital:34325
- Description: This study is a qualitative study focusing on the sustainability challenges affecting the performance of community radio stations in Eastern Cape using Forte FM and Vukani FM as case studies. For the purpose of this study, in-depth interviews and focus group interviews were used to collect data and the researcher had in-depth interviews with the station managers of both radio stations. Another interview was conducted with the programme manager of the Media Development and Diversity Agency (MDDA). In addition, this study conducted one focus group interview with purposively selected participants for each community radio station to get their views on the functioning and sustainability challenges facing each of the radio station and how they see them helping their communities. The findings of the study revealed that the major sustainability challenges faced by the stations are finances and lack of resources. The lack of resources is a major problem as it reflects a lack of political will and policies that have failed to recognize the importance of communication as a social process that can help to bring change and development (Fraser & Estrada, 2003:3). As revealed by the findings of this study, the most serious challenge that both stations face is financial sustainability as they had said they struggle to function because they do not have money to pay their staff, and to pay the National Community Radio Forum (NCRF) in order to be kept on air and to deliver their content to the targeted audiences. This study also found out that the stations are not able to train their reporters while they are not getting a regular assistance from the Minister of Communications. The radio stations noted that the Department of Communications used to assist them some years ago but now support only comes from the MDDA. On the other hand, the study also revealed that the MDDA do assist the community radio stations by providing them with necessary broadcasting and transmission equipment and facilities to make sure that they stay on air. This study therefore, concludes that despite the several sustainability challenges faced by these community radio stations, they are still able to contribute to the development of their communities
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Synthesis, characterization and in vitro antiplasmodial evaluation of 4-& 8-aminoquinoline based-hybrid compounds
- Authors: Nqoro, Xhamla
- Date: 2018
- Subjects: Plasmodium falciparum
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/14649 , vital:40026
- Description: Malaria is a deadly disease and its drug resistance has been reported to be a challenge globally. The death toll caused by malaria has increased rapidly in different regions of the world. Quinoline scaffold molecules are combined with other classes of antimalarials to tackle drug resistance. The combination of quinoline scaffolds with other antimalarial compounds and metals-based drugs have been reported to be a potential approach to overcome drug resistance common in the currently used antimalarials. 4-Aminoquinoline was hybridized with selected organic molecules and metal-based compounds to form a class of hybrid compounds containing either an amide bond or ester bond as a linker between the parent molecules. 4-Aminoquinoline derivatives are known compounds and they were prepared via known synthetic routes and characterized. The hybrid compounds were characterized and the FTIR results confirmed the successful linkage of 4-aminoquinoline derivatives to selected organic scaffolds to form hybrid compounds. NMR results confirmed the successful formation of hybrid compounds. MS showed signals of the hybrid molecules confirming the successful isolation of the hybrid compounds. In vitro antiplasmodial assay was performed against asexual parasite and chloroquine was used as a reference drug. The percentage inhibition effects of the hybrid compounds were in a range of 96-102% at 5 µM and 36-96% at 1 µM suggesting that the percentage inhibition effect of the hybrid compounds was influenced by the drug concentration. Hybridization of either 4-aminosalicylic scaffold or ferrocene butanoic acid with 4- aminoquinoline derivatives is a potential synthetic route that can result in potent antimalarials. However, more research is needed to fully understand the structure-activity relationship of these hybrid compounds.
- Full Text:
- Authors: Nqoro, Xhamla
- Date: 2018
- Subjects: Plasmodium falciparum
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/14649 , vital:40026
- Description: Malaria is a deadly disease and its drug resistance has been reported to be a challenge globally. The death toll caused by malaria has increased rapidly in different regions of the world. Quinoline scaffold molecules are combined with other classes of antimalarials to tackle drug resistance. The combination of quinoline scaffolds with other antimalarial compounds and metals-based drugs have been reported to be a potential approach to overcome drug resistance common in the currently used antimalarials. 4-Aminoquinoline was hybridized with selected organic molecules and metal-based compounds to form a class of hybrid compounds containing either an amide bond or ester bond as a linker between the parent molecules. 4-Aminoquinoline derivatives are known compounds and they were prepared via known synthetic routes and characterized. The hybrid compounds were characterized and the FTIR results confirmed the successful linkage of 4-aminoquinoline derivatives to selected organic scaffolds to form hybrid compounds. NMR results confirmed the successful formation of hybrid compounds. MS showed signals of the hybrid molecules confirming the successful isolation of the hybrid compounds. In vitro antiplasmodial assay was performed against asexual parasite and chloroquine was used as a reference drug. The percentage inhibition effects of the hybrid compounds were in a range of 96-102% at 5 µM and 36-96% at 1 µM suggesting that the percentage inhibition effect of the hybrid compounds was influenced by the drug concentration. Hybridization of either 4-aminosalicylic scaffold or ferrocene butanoic acid with 4- aminoquinoline derivatives is a potential synthetic route that can result in potent antimalarials. However, more research is needed to fully understand the structure-activity relationship of these hybrid compounds.
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Synthesis, characterization and photophysical studies of RU(II)bipyridyl-dithiocarbamate complexes as sensitizers for dye sensitized solar cells
- Authors: Fudo, Zintle
- Date: 2018
- Subjects: Dye-sensitized solar cells Renewable energy sources
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/6168 , vital:29498
- Description: The depletion of fossil fuels and the increasing energy demand for energy has led to the search for better and improved technologies with special focus renewable energy, especially solar cells. The first generation solar cells based on silicon are expensive, hence dye sensitized solar cells come in as a better alternative as these solar cells are environmental friendly, they have moderately good conversion efficiency and they are relatively cheap to produce. Dithiocarbamate ligands have been widely used in many research fields, as these are versatile ligands. Coordination of dithiocarbamates with metals such as ruthenium has produced high conversion efficiency and have the ability to extend the MLCT absorptions, and this can further extend their wavelength. In this study five dithiocarbamate sodium salt ligands were prepared and were coded as FL1= Aniline, FL2= p- toluidine, FL3= p- anisidine, FL4=dibenzyl, FL5=diphenyl. These ligands were used to synthesize Ru(II) metal complexes which were formulated as [Ru(FLx)(dcbpy)(NCS)] and [Ru(FLx)2(dcbpy)] where FLx is the dithiocarbamate ligand and dcbpy is 2,2-bipyridine-4,4’-dicarboxylic acid and the complexes were coded as FCx. The synthesized compounds were characterized using techniques such as the melting point, molar conductivity, FT-IR and NMR spectroscopy. For spectroelectrochemical studies of the metal complexes, techniques such as UV-Vis and photoluminescence spectroscopy were carried out. Furthermore, redox properties of the complexes were analyzed using cyclic and square wave voltammetry. The FT-IR displayed all the expected peaks of interest both in the dithiocarbamate ligands and in the metal complexes. The electronic spectra confirmed the successful coordination of ligand to the metal centre, the electronic spectra of the complexes also confirmed the six coordinate octahedral geometry of the complexes. The complexes exhibited some photoluminescence properties that are suitable for dye sensitization. The cyclic voltammogram of the complexes displayed more reduction potentials that could be attributed to the π-conjugation in the ligands incorporated during synthesis. The square wave voltammogram of the complexes is in agreement with the results obtained in cyclic voltammetry.
- Full Text:
- Authors: Fudo, Zintle
- Date: 2018
- Subjects: Dye-sensitized solar cells Renewable energy sources
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/6168 , vital:29498
- Description: The depletion of fossil fuels and the increasing energy demand for energy has led to the search for better and improved technologies with special focus renewable energy, especially solar cells. The first generation solar cells based on silicon are expensive, hence dye sensitized solar cells come in as a better alternative as these solar cells are environmental friendly, they have moderately good conversion efficiency and they are relatively cheap to produce. Dithiocarbamate ligands have been widely used in many research fields, as these are versatile ligands. Coordination of dithiocarbamates with metals such as ruthenium has produced high conversion efficiency and have the ability to extend the MLCT absorptions, and this can further extend their wavelength. In this study five dithiocarbamate sodium salt ligands were prepared and were coded as FL1= Aniline, FL2= p- toluidine, FL3= p- anisidine, FL4=dibenzyl, FL5=diphenyl. These ligands were used to synthesize Ru(II) metal complexes which were formulated as [Ru(FLx)(dcbpy)(NCS)] and [Ru(FLx)2(dcbpy)] where FLx is the dithiocarbamate ligand and dcbpy is 2,2-bipyridine-4,4’-dicarboxylic acid and the complexes were coded as FCx. The synthesized compounds were characterized using techniques such as the melting point, molar conductivity, FT-IR and NMR spectroscopy. For spectroelectrochemical studies of the metal complexes, techniques such as UV-Vis and photoluminescence spectroscopy were carried out. Furthermore, redox properties of the complexes were analyzed using cyclic and square wave voltammetry. The FT-IR displayed all the expected peaks of interest both in the dithiocarbamate ligands and in the metal complexes. The electronic spectra confirmed the successful coordination of ligand to the metal centre, the electronic spectra of the complexes also confirmed the six coordinate octahedral geometry of the complexes. The complexes exhibited some photoluminescence properties that are suitable for dye sensitization. The cyclic voltammogram of the complexes displayed more reduction potentials that could be attributed to the π-conjugation in the ligands incorporated during synthesis. The square wave voltammogram of the complexes is in agreement with the results obtained in cyclic voltammetry.
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Teachers' support of learners with attention deficit hyperactivity disorder (ADHD) in mainstream grade 10 classes: a case study
- Authors: Hendriks, Ivy Johleen
- Date: 2018
- Subjects: Attention-deficit-disordered children -- Education (Higher) , Hyperactive children -- Education (Higher)
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10353/9033 , vital:34184
- Description: Attention Deficit Hyperactivity Disorder (ADHD) affects between 5 – 7 percent of children in the United States and Europe, making it one of the most common child psychiatric diagnoses. ADHD currently affects approximately 3 – 5 percent of school-going children and adolescents in South Africa. Schools create multiple challenges for learners with ADHD who show classic symptoms of inattention, hyperactivity and impulsivity. These symptoms produce impairment across cognitive, behavioural and interpersonal domains of function. Symptoms frequently manifest in a school setting, thus teachers play a central role in reporting symptoms, advising parents to seek professional assessment and assisting children with ADHD to achieve academically and socially. In line with the Education White Paper 6 of 2001, teachers should not only support learners with ADHD, but need to help these learners to understand and accept themselves as learners. The Literature focus on teachers’ knowledge of the characteristic symptoms displayed by learners with ADHD; teachers’ role in identifying and referring learners with ADHD; challenges faced by teachers when teaching learners with ADHD as well as teaching strategies and classroom accommodations teachers employ to effectively support learners with ADHD. The research was undertaken as a qualitative case study with an interpretivist underpinning. Data was collected making use of open-ended questionnaires, semi structured interviews and an informal observation. Purposive sampling was used to identify 6 teachers from previously disadvantaged high schools, teaching either Mathematics or a Language. The findings of the study indicated that teachers in mainstream high schools do not possess adequate knowledge to identify and refer learners with ADHD. As assumed by the researcher, the teachers’ lack of knowledge leads to unsuitable teaching strategies and classroom accommodations. Their biggest challenge to effectively support learners with ADHD was a lack of support and knowledge.
- Full Text:
- Authors: Hendriks, Ivy Johleen
- Date: 2018
- Subjects: Attention-deficit-disordered children -- Education (Higher) , Hyperactive children -- Education (Higher)
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10353/9033 , vital:34184
- Description: Attention Deficit Hyperactivity Disorder (ADHD) affects between 5 – 7 percent of children in the United States and Europe, making it one of the most common child psychiatric diagnoses. ADHD currently affects approximately 3 – 5 percent of school-going children and adolescents in South Africa. Schools create multiple challenges for learners with ADHD who show classic symptoms of inattention, hyperactivity and impulsivity. These symptoms produce impairment across cognitive, behavioural and interpersonal domains of function. Symptoms frequently manifest in a school setting, thus teachers play a central role in reporting symptoms, advising parents to seek professional assessment and assisting children with ADHD to achieve academically and socially. In line with the Education White Paper 6 of 2001, teachers should not only support learners with ADHD, but need to help these learners to understand and accept themselves as learners. The Literature focus on teachers’ knowledge of the characteristic symptoms displayed by learners with ADHD; teachers’ role in identifying and referring learners with ADHD; challenges faced by teachers when teaching learners with ADHD as well as teaching strategies and classroom accommodations teachers employ to effectively support learners with ADHD. The research was undertaken as a qualitative case study with an interpretivist underpinning. Data was collected making use of open-ended questionnaires, semi structured interviews and an informal observation. Purposive sampling was used to identify 6 teachers from previously disadvantaged high schools, teaching either Mathematics or a Language. The findings of the study indicated that teachers in mainstream high schools do not possess adequate knowledge to identify and refer learners with ADHD. As assumed by the researcher, the teachers’ lack of knowledge leads to unsuitable teaching strategies and classroom accommodations. Their biggest challenge to effectively support learners with ADHD was a lack of support and knowledge.
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The acceptability of mulching on zero tillage as a water and soil conservation strategy by small scale farmers of Matatiele, Eastern Cape Province of South Africa
- Authors: Ngciva, Jabulani Emmanuel
- Date: 2018
- Subjects: Tillage -- South Africa -- Eastern Cape Farms, Small -- South Africa -- Eastern Cape No-tillage -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , Agricultural Extension
- Identifier: http://hdl.handle.net/10353/10564 , vital:35610
- Description: The acceptability of zero tillage amongst small-scale farmers is a challenge in the Eastern Cape Province as farmers have different strategies on how to manage residue. This situation is due to the limited information available on the benefits of implementing zero tillage, such as improving soil health. The Department of Agriculture and Agrarian Reform have been assisting small-scale farmers by subsidising them with the latest innovations, such as zero tillage. The main essence of these initiatives was to compensate farmers that are previously disadvantaged as a result of the apartheid system prior to 1994. Zero tillage has recently gained more attention as one of the most important farm practices due to its benefits for soil conservation and the elimination of greenhouse gases. The study was conducted at Magadla and Nkawu villages in Matatiele, Eastern Cape. The objective of the survey was to examine the influence of current residue management practices amongst Matatiele farmers in the light of the adoption of zero tillage practices. The data was collected using questionnaires and group discussions. The statistical package SPSS and Microsoft Excel were used to analyse data. The findings showed that the adoption percentages of zero tillage by small-scale farmers was 34 percent and 65 percent in Magadla and Nkawu villages respectively. Amongst the challenges that non-adopters faced were shortage of inputs, weak communication channels between farmers and coordinators, residue benefits to livestock and lack of proper monitoring and evaluation. Binary logistic model was adopted and used to analyse 13 independent variables that influence the adoption of mulching in the study area.
- Full Text:
- Authors: Ngciva, Jabulani Emmanuel
- Date: 2018
- Subjects: Tillage -- South Africa -- Eastern Cape Farms, Small -- South Africa -- Eastern Cape No-tillage -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , Agricultural Extension
- Identifier: http://hdl.handle.net/10353/10564 , vital:35610
- Description: The acceptability of zero tillage amongst small-scale farmers is a challenge in the Eastern Cape Province as farmers have different strategies on how to manage residue. This situation is due to the limited information available on the benefits of implementing zero tillage, such as improving soil health. The Department of Agriculture and Agrarian Reform have been assisting small-scale farmers by subsidising them with the latest innovations, such as zero tillage. The main essence of these initiatives was to compensate farmers that are previously disadvantaged as a result of the apartheid system prior to 1994. Zero tillage has recently gained more attention as one of the most important farm practices due to its benefits for soil conservation and the elimination of greenhouse gases. The study was conducted at Magadla and Nkawu villages in Matatiele, Eastern Cape. The objective of the survey was to examine the influence of current residue management practices amongst Matatiele farmers in the light of the adoption of zero tillage practices. The data was collected using questionnaires and group discussions. The statistical package SPSS and Microsoft Excel were used to analyse data. The findings showed that the adoption percentages of zero tillage by small-scale farmers was 34 percent and 65 percent in Magadla and Nkawu villages respectively. Amongst the challenges that non-adopters faced were shortage of inputs, weak communication channels between farmers and coordinators, residue benefits to livestock and lack of proper monitoring and evaluation. Binary logistic model was adopted and used to analyse 13 independent variables that influence the adoption of mulching in the study area.
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The awareness of Black men involved in domestic violence after rehabilitation programme : an interpretive phenomenological analysis
- Authors: Tladi, Martha Makgamatwane
- Date: 2018
- Subjects: Family violence Blacks Rehabilitation
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/14011 , vital:39761
- Description: The aim of this research study is to explore the subjective views and experiences of black men who were perpetrators of domestic violence and have gone through a rehabilitation programme as a result. This paper also explores the connection between masculinity and domestic violence, and how perpetrators make sense of the concept of domestic violence and abuse. The reason underlying the study is to contribute to the fight against domestic violence, perpetrated by males, by understanding the root cause of the problem. This topic emerged due to the lack of sufficient academic papers on men as perpetrators of domestic violence, therefore the intention is to progressively close the gap and contribute to the already existing knowledge on the issue of domestic violence. The study comprised of four research participants gathered from different NGOs and thus different backgrounds. The sample comprised of two Black males and two Coloured males. It is worth noting that for the purpose of this study, black men refers to all men of colour. Thus, both African males and Coloured males fall under the same umbrella of Black men. An Interpretive Phenomenological Analysis from the Qualitative paradigm was used to analyse the data received from semi-structured interviews. The themes that arouse from the study were 1) Learning gender roles through observation; 2) Masculinity learned through teachings; 3) Misinterpreting African values; 4) Intoxication makes it easier to hit a woman; 5) Difficulty dealing with deep emotions; 6) Control and ownership in the relationship; 7) Gender roles forced by society; 8) Lack of consequences; and 9) Masculinity matures. The findings of the study is that masculinity is connected to men perpetrating domestic violence through misinterpreting African values that are taught by elders. Even though masculinity is taught to boys at a tender age, it was discovered that for some of the participants, masculinity is not stagnant but rather constantly changing as the individual grows in personality and life experiences, and thus their values change. As a result of this discovery, masculinity is also individualistic. These findings could assist in future research. Perhaps a much larger research focusing on evaluating, and later, developing rehabilitation programmes that speak to the individual experiences and beliefs of different South African males in order to accommodate the diverse cultures, and thus the beliefs that South Africa shares amongst its people.
- Full Text:
- Authors: Tladi, Martha Makgamatwane
- Date: 2018
- Subjects: Family violence Blacks Rehabilitation
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/14011 , vital:39761
- Description: The aim of this research study is to explore the subjective views and experiences of black men who were perpetrators of domestic violence and have gone through a rehabilitation programme as a result. This paper also explores the connection between masculinity and domestic violence, and how perpetrators make sense of the concept of domestic violence and abuse. The reason underlying the study is to contribute to the fight against domestic violence, perpetrated by males, by understanding the root cause of the problem. This topic emerged due to the lack of sufficient academic papers on men as perpetrators of domestic violence, therefore the intention is to progressively close the gap and contribute to the already existing knowledge on the issue of domestic violence. The study comprised of four research participants gathered from different NGOs and thus different backgrounds. The sample comprised of two Black males and two Coloured males. It is worth noting that for the purpose of this study, black men refers to all men of colour. Thus, both African males and Coloured males fall under the same umbrella of Black men. An Interpretive Phenomenological Analysis from the Qualitative paradigm was used to analyse the data received from semi-structured interviews. The themes that arouse from the study were 1) Learning gender roles through observation; 2) Masculinity learned through teachings; 3) Misinterpreting African values; 4) Intoxication makes it easier to hit a woman; 5) Difficulty dealing with deep emotions; 6) Control and ownership in the relationship; 7) Gender roles forced by society; 8) Lack of consequences; and 9) Masculinity matures. The findings of the study is that masculinity is connected to men perpetrating domestic violence through misinterpreting African values that are taught by elders. Even though masculinity is taught to boys at a tender age, it was discovered that for some of the participants, masculinity is not stagnant but rather constantly changing as the individual grows in personality and life experiences, and thus their values change. As a result of this discovery, masculinity is also individualistic. These findings could assist in future research. Perhaps a much larger research focusing on evaluating, and later, developing rehabilitation programmes that speak to the individual experiences and beliefs of different South African males in order to accommodate the diverse cultures, and thus the beliefs that South Africa shares amongst its people.
- Full Text:
The contribution of small scale livestock farming to rural household income in the King William's Town area
- Authors: Mbangcolo, Nomalungisa
- Date: 2018
- Subjects: Farms, Small Livestock farms Rural poor
- Language: English
- Type: Thesis , Masters , MAgric
- Identifier: http://hdl.handle.net/10353/13018 , vital:39432
- Description: The Eastern Cape Province have high numbers of livestock but high poverty rates remain very high. This study therefore, aimed to determine the contribution of smallscale livestock farming to rural household income in the King William’s Town area in five rural areas. Literature shows that the livestock sector contributes 40 percent of global value of agricultural output and supports the livelihoods and food security of almost a billion people. The data collected for this research were both quantitative and qualitative and cross-section design was employed for the research. The study used both simple random sampling and availability sampling to select 125 sample households, 25 respondents from each village. Descriptive statistics was used in the analysis of demographic and socio economic characteristics of households where graphs and tables were used to present the relevant information. Probit regression model was used to determine factors influencing the decision to practice livestock production and marginal analysis was calculated to determine the effect of changes of individual variables. For the assessment of the contribution of small-scale livestock farming to household income Propensity Score Matching (PSM) model was fitted. Results show that the highest percentage of livestock kept by households in 5 villages is 56 percent for poultry and the lowest percentage is 2 percent for pig. The main source of income for many households in the study area was the income from pensions and grants but livestock farming is also contributing to household’s income through income generated from sales of livestock for customary events such as traditional rituals and celebrations, lobola, funerals and weddings. Many of the households have secondary education and the reason might simply be that in olden days’ parents had no money to pay school fees of their children and that limited children to go further with their studies. The results of the marginal effects estimates for the probit model suggest that changes in the number of livestock sold would have important effects on household incomes. There are various challenges that livestock producers are facing in their production and the major challenge that households are facing is parasites and diseases as they decrease number of livestock kept by households. Parasites and diseases suck blood, causing the animals to become weak and sometimes resulting in high mortality rate. It is recommended that livestock producers should be made aware of the impacts of various challenges that affect livestock farming through awareness creation programmes and suggest solutions to overcome those challenges.
- Full Text:
- Authors: Mbangcolo, Nomalungisa
- Date: 2018
- Subjects: Farms, Small Livestock farms Rural poor
- Language: English
- Type: Thesis , Masters , MAgric
- Identifier: http://hdl.handle.net/10353/13018 , vital:39432
- Description: The Eastern Cape Province have high numbers of livestock but high poverty rates remain very high. This study therefore, aimed to determine the contribution of smallscale livestock farming to rural household income in the King William’s Town area in five rural areas. Literature shows that the livestock sector contributes 40 percent of global value of agricultural output and supports the livelihoods and food security of almost a billion people. The data collected for this research were both quantitative and qualitative and cross-section design was employed for the research. The study used both simple random sampling and availability sampling to select 125 sample households, 25 respondents from each village. Descriptive statistics was used in the analysis of demographic and socio economic characteristics of households where graphs and tables were used to present the relevant information. Probit regression model was used to determine factors influencing the decision to practice livestock production and marginal analysis was calculated to determine the effect of changes of individual variables. For the assessment of the contribution of small-scale livestock farming to household income Propensity Score Matching (PSM) model was fitted. Results show that the highest percentage of livestock kept by households in 5 villages is 56 percent for poultry and the lowest percentage is 2 percent for pig. The main source of income for many households in the study area was the income from pensions and grants but livestock farming is also contributing to household’s income through income generated from sales of livestock for customary events such as traditional rituals and celebrations, lobola, funerals and weddings. Many of the households have secondary education and the reason might simply be that in olden days’ parents had no money to pay school fees of their children and that limited children to go further with their studies. The results of the marginal effects estimates for the probit model suggest that changes in the number of livestock sold would have important effects on household incomes. There are various challenges that livestock producers are facing in their production and the major challenge that households are facing is parasites and diseases as they decrease number of livestock kept by households. Parasites and diseases suck blood, causing the animals to become weak and sometimes resulting in high mortality rate. It is recommended that livestock producers should be made aware of the impacts of various challenges that affect livestock farming through awareness creation programmes and suggest solutions to overcome those challenges.
- Full Text: