Household's perceptions and determinants of participation in harvesting rangeland products :|bthe case of Dyamala community, Raymond Mhlaba Local Municipality, Eastern Cape Province, South Africa
- Authors: Mdiya, Lwandiso
- Date: 2018
- Subjects: Rangelands -- South Africa -- Eastern Cape Communal rangelands -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/9187 , vital:34303
- Description: The study reviews the household’s perceptions and determinants of sustainable products harvesting. Communal rangelands are vast natural landscapes in the form of grasslands, shrubs, woodlands, wetlands and deserts with multiple functions to the rural households. Most rural communities share boundaries and interact with rangelands for multiple socioeconomic and environmental reasons. Since most of these interactions are external to the price mechanism, the actual contribution of rangelands to communities has largely been missed. In an effort to appraise and explore the communal rangeland contribution to households, a study from Dyamala community in the Raymond Mhlaba Local Municipality under Amathole District in Eastern Cape was conducted using cross-sectional data. Descriptive results revealed that the majority of the respondents (71 percent) from the study area positively perceived communal rangelands as safety nets. however, there also emerged a fair share of challenges namely, (bad spirit, host predators, compete with arable land) leading to negative perceptions towards communal rangelands. It was also evident that, the majority of respondents from the study area use communal rangelands for fuel wood, construction poles, traditional medicine, with minor harvests of wild food (flora and fauna) and thatch grass. The results of the study also revealed that, rural people depend more on social grants for their income followed by incomes from remittances, agricultural activities and communal rangelands. However, it was established from the results that though communal rangelands provided commercial products capable of generating household income, rangeland users trading such products were receiving meagre incomes. This might be caused by the lack of institutional support to rural households thus, the low incomes received from communal rangelands. To that effect, main communal rangeland products such as, fuel wood, poles and medicine were cited as being more valuable for local domestic use than for the external market. Regression estimates further indicated that participation in communal rangeland products harvesting is more conditioned by perception-related factors as compared to socioeconomic attributes of rural households worth understanding for strategic targeting to promote their conservation. The extant literature and the study results, evidently show that communal rangelands provide a livelihood among rural households although it has a low direct household income potential. Therefore, the respondents were of the view that the use of campaigns targeting several perceptions (such as communal rangelands act as a source of medicinal plants, arable land and income etc) as suggested by the regression estimates may be very useful. The support from the extension department and further research may be necessary for purposes of quantifying harvestable rangeland products capable of enhancing rural livelihoods. Moreover, the observed low income potential of communal rangeland products suggests several technical and institutional challenges worth addressing to promote value addition of rangeland products.
- Full Text:
- Authors: Mdiya, Lwandiso
- Date: 2018
- Subjects: Rangelands -- South Africa -- Eastern Cape Communal rangelands -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/9187 , vital:34303
- Description: The study reviews the household’s perceptions and determinants of sustainable products harvesting. Communal rangelands are vast natural landscapes in the form of grasslands, shrubs, woodlands, wetlands and deserts with multiple functions to the rural households. Most rural communities share boundaries and interact with rangelands for multiple socioeconomic and environmental reasons. Since most of these interactions are external to the price mechanism, the actual contribution of rangelands to communities has largely been missed. In an effort to appraise and explore the communal rangeland contribution to households, a study from Dyamala community in the Raymond Mhlaba Local Municipality under Amathole District in Eastern Cape was conducted using cross-sectional data. Descriptive results revealed that the majority of the respondents (71 percent) from the study area positively perceived communal rangelands as safety nets. however, there also emerged a fair share of challenges namely, (bad spirit, host predators, compete with arable land) leading to negative perceptions towards communal rangelands. It was also evident that, the majority of respondents from the study area use communal rangelands for fuel wood, construction poles, traditional medicine, with minor harvests of wild food (flora and fauna) and thatch grass. The results of the study also revealed that, rural people depend more on social grants for their income followed by incomes from remittances, agricultural activities and communal rangelands. However, it was established from the results that though communal rangelands provided commercial products capable of generating household income, rangeland users trading such products were receiving meagre incomes. This might be caused by the lack of institutional support to rural households thus, the low incomes received from communal rangelands. To that effect, main communal rangeland products such as, fuel wood, poles and medicine were cited as being more valuable for local domestic use than for the external market. Regression estimates further indicated that participation in communal rangeland products harvesting is more conditioned by perception-related factors as compared to socioeconomic attributes of rural households worth understanding for strategic targeting to promote their conservation. The extant literature and the study results, evidently show that communal rangelands provide a livelihood among rural households although it has a low direct household income potential. Therefore, the respondents were of the view that the use of campaigns targeting several perceptions (such as communal rangelands act as a source of medicinal plants, arable land and income etc) as suggested by the regression estimates may be very useful. The support from the extension department and further research may be necessary for purposes of quantifying harvestable rangeland products capable of enhancing rural livelihoods. Moreover, the observed low income potential of communal rangeland products suggests several technical and institutional challenges worth addressing to promote value addition of rangeland products.
- Full Text:
Narratives of challenge and motivation : the stories of East London Community Health Care volunteers
- Authors: Ngconjana, Unati
- Date: 2017
- Subjects: Community health services Volunteer workers in social service Home care services
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/6325 , vital:29569
- Description: The research study was aimed at exploring the narratives of motivations and challenges that home-based health care workers experience in their voluntary service provision. It was conducted in East London in Buffalo City Metropolitan Municipality. A total of seven participants who volunteer in home based care programmes were interviewed and their mean age was 30 years; all were females, two married, one a widow, one divorced and two single females. The narrative framework was used to explore the volunteers' interpretation of volunteering experiences, highlighting themes that emerged on what encourages them to volunteer as home based health care workers, and how they deal with challenges that arise during the provision of services. The research was also aimed at exploring the social factors supporting the volunteers' decision to continue volunteering. Narratives from the interviewed community health workers [CHWs] indicate that the motives for participating in CHW programmes are mainly altruistic although people are sometimes motivated by self-interest. Self-interest seems to be particularly relevant in the case of the younger volunteers as they expressed their hope that providing voluntary service may help to enhance their skills so as to facilitate future learning and employment prospects. The recurring themes within the CHWs' narrative indicate that they identify with the helping role and feel it empowers them as they participate in meaningful ways in their communities, and they gain strength to cope with challenges that come with community health work. This study highlighted the complex nature of home based care roles, which inevitably reflect the intervention approach, the mode of working, professional roles and relationships with communities.
- Full Text: false
Narratives of challenge and motivation : the stories of East London Community Health Care volunteers
- Authors: Ngconjana, Unati
- Date: 2017
- Subjects: Community health services Volunteer workers in social service Home care services
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/6325 , vital:29569
- Description: The research study was aimed at exploring the narratives of motivations and challenges that home-based health care workers experience in their voluntary service provision. It was conducted in East London in Buffalo City Metropolitan Municipality. A total of seven participants who volunteer in home based care programmes were interviewed and their mean age was 30 years; all were females, two married, one a widow, one divorced and two single females. The narrative framework was used to explore the volunteers' interpretation of volunteering experiences, highlighting themes that emerged on what encourages them to volunteer as home based health care workers, and how they deal with challenges that arise during the provision of services. The research was also aimed at exploring the social factors supporting the volunteers' decision to continue volunteering. Narratives from the interviewed community health workers [CHWs] indicate that the motives for participating in CHW programmes are mainly altruistic although people are sometimes motivated by self-interest. Self-interest seems to be particularly relevant in the case of the younger volunteers as they expressed their hope that providing voluntary service may help to enhance their skills so as to facilitate future learning and employment prospects. The recurring themes within the CHWs' narrative indicate that they identify with the helping role and feel it empowers them as they participate in meaningful ways in their communities, and they gain strength to cope with challenges that come with community health work. This study highlighted the complex nature of home based care roles, which inevitably reflect the intervention approach, the mode of working, professional roles and relationships with communities.
- Full Text: false
Screening of shark liver extracts for potential antimicrobial properties against selected pathogenic bacterial strains
- Authors: Mrwetyana, Thandolwethu
- Date: 2017
- Subjects: Fishes -- Diseases Pathogenic bacteria
- Language: English
- Type: Thesis , Masters , Microbiology
- Identifier: http://hdl.handle.net/10353/13004 , vital:39431
- Description: The growing problem of antimicrobial resistance prevents the effective treatment of bacterial infections. Traditional antibiotics such as penicillin have been rendered ineffective against most microbial pathogens. This has led to an increased need for the development of new and improved drugs. The marine environment contains a great array of organisms with unique biological properties, but still remains one of our most underutilized biological resources. The aim of this study was to screen different shark liver extracts for antimicrobial properties. After optimizing the extraction methods, the liver extracts (oil and aminosterol) of three different shark species, namely the Dogfish (Squalus acanthias), the Catshark (Scyliorhinus capensis) and the Hammerhead (Sphyrna zygaena) shark, were screened for antimicrobial properties using the Kirby-Bauer disc diffusion method against selected bacterial pathogens (Helicobacter pylori, Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus and Bacillus cereus), after which the MIC was determined using the modified broth micro-dilution described by Vollekova et al. (2001). The most active extract was fractionated using thin layer chromatography, and TLC-direct bioautography was used to determine the antimicrobial properties of the fractionated compounds. The Folch et al and the Shinnar et al methods yielded the highest extract volumes for oil and aminosterol consecutively, and the catshark and dogfish aminosterol extract showed greater levels of bioactivity against all selected bacterial pathogens, with S. aureus showing highest susceptibility levels to both extracts. A total of 22 compounds were observed in the developed plates with two compounds (Rf 0.53 and 0.79) showing antimicrobial activity. Certain shark liver extracts possess antimicrobial properties that have the potential to be used in the development of new antimicrobial drugs.
- Full Text:
- Authors: Mrwetyana, Thandolwethu
- Date: 2017
- Subjects: Fishes -- Diseases Pathogenic bacteria
- Language: English
- Type: Thesis , Masters , Microbiology
- Identifier: http://hdl.handle.net/10353/13004 , vital:39431
- Description: The growing problem of antimicrobial resistance prevents the effective treatment of bacterial infections. Traditional antibiotics such as penicillin have been rendered ineffective against most microbial pathogens. This has led to an increased need for the development of new and improved drugs. The marine environment contains a great array of organisms with unique biological properties, but still remains one of our most underutilized biological resources. The aim of this study was to screen different shark liver extracts for antimicrobial properties. After optimizing the extraction methods, the liver extracts (oil and aminosterol) of three different shark species, namely the Dogfish (Squalus acanthias), the Catshark (Scyliorhinus capensis) and the Hammerhead (Sphyrna zygaena) shark, were screened for antimicrobial properties using the Kirby-Bauer disc diffusion method against selected bacterial pathogens (Helicobacter pylori, Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus and Bacillus cereus), after which the MIC was determined using the modified broth micro-dilution described by Vollekova et al. (2001). The most active extract was fractionated using thin layer chromatography, and TLC-direct bioautography was used to determine the antimicrobial properties of the fractionated compounds. The Folch et al and the Shinnar et al methods yielded the highest extract volumes for oil and aminosterol consecutively, and the catshark and dogfish aminosterol extract showed greater levels of bioactivity against all selected bacterial pathogens, with S. aureus showing highest susceptibility levels to both extracts. A total of 22 compounds were observed in the developed plates with two compounds (Rf 0.53 and 0.79) showing antimicrobial activity. Certain shark liver extracts possess antimicrobial properties that have the potential to be used in the development of new antimicrobial drugs.
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Small-scale farmers' participation in planning and implementation of farmer support programmes in Amahlathi Local Municipality, Eastern Cape Province, South Africa
- Authors: Makunga, Phendulwa Zikhona
- Date: 2017
- Subjects: Agricultural development projects , Farms, Small -- South Africa -- Eastern Cape , Agriculture -- Economic aspects -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/6248 , vital:29529
- Description: The democratic government in South Africa has brought about several policies which were initiated for rural development, and one of the government’s strategies was to involve the agricultural sector. Farmer Support Programmes (FSPs) were developed to assist small-scale farmers to become commercial farmers. The study looked at the participation of small scale farmers in the planning and implementation of the FSPs in the Amahlathi Local Municipality. 108 small scale farmers were selected using a non-random purposive probability and twelve farmers’ organisations. Semi-structured questionnaires and semi-structured interviews were used as the data collection tool and method respectively. The data analysis used was a descriptive analysis and a thematic analysis. The results revealed that the farmers have a positive perception towards the support programmes being helpful in their farming needs. The positive perception was especially on the extension and advisory services, dipping and vaccination programme, and the supply and funding of inputs and assets. However, the results revealed that there was no significant difference between gender and the perception of the farmers when a chi square test of association was performed. The results also revealed that the farmers and farmers’ organisations were not involved in the planning of the programmes by the government. It is therefore recommended that for the success of the FSP and for economic growth in the rural areas, the government has to avoid using a top-down approach when developing these programmes, and instead consult the farmers and the farmers’ organisations to know the specific needs of the farmers in their farming practices.
- Full Text:
- Authors: Makunga, Phendulwa Zikhona
- Date: 2017
- Subjects: Agricultural development projects , Farms, Small -- South Africa -- Eastern Cape , Agriculture -- Economic aspects -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/6248 , vital:29529
- Description: The democratic government in South Africa has brought about several policies which were initiated for rural development, and one of the government’s strategies was to involve the agricultural sector. Farmer Support Programmes (FSPs) were developed to assist small-scale farmers to become commercial farmers. The study looked at the participation of small scale farmers in the planning and implementation of the FSPs in the Amahlathi Local Municipality. 108 small scale farmers were selected using a non-random purposive probability and twelve farmers’ organisations. Semi-structured questionnaires and semi-structured interviews were used as the data collection tool and method respectively. The data analysis used was a descriptive analysis and a thematic analysis. The results revealed that the farmers have a positive perception towards the support programmes being helpful in their farming needs. The positive perception was especially on the extension and advisory services, dipping and vaccination programme, and the supply and funding of inputs and assets. However, the results revealed that there was no significant difference between gender and the perception of the farmers when a chi square test of association was performed. The results also revealed that the farmers and farmers’ organisations were not involved in the planning of the programmes by the government. It is therefore recommended that for the success of the FSP and for economic growth in the rural areas, the government has to avoid using a top-down approach when developing these programmes, and instead consult the farmers and the farmers’ organisations to know the specific needs of the farmers in their farming practices.
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An examination of the nexus between school management and governance : a case of selected schools in the Eastern Cape Province
- Ntsimango, Ncedile Stewart Lungisa
- Authors: Ntsimango, Ncedile Stewart Lungisa
- Date: 2016
- Subjects: School management and organization -- South Africa -- Eastern Cape School boards -- South Africa -- Eastern Cape Education and state -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: http://hdl.handle.net/10353/1885 , vital:27573
- Description: School management and governance has become essential in improving quality of education in public schools (Caldwell, 2012). Furthermore, the existence of a well-established partnership between school governors and school managers is vital to ensure that students receive quality education. On this regard, the study sought to broaden an understanding the thin line between School Management Teams (SMT) and School Governing Bodies (SGB) which is frequently crossed by both parties while executing their roles and responsibilities. The population for the study was SGB members, SMT members and general staff members of public schools in the Eastern Cape Province. The study unit was Willowvale (KwaGcaleka kuGatyane) a circuit named after a great amaXhosa king Zwelidumile, King Zwelidumile Circuit. Purposive sampling method was used because collection of data required that respondents be familiar with the concepts of school management and school governance. A mixed method research methodology was used which include a combination of qualitative and quantitative research approaches. A self-administered questionnaire was used to collect quantitative data and an interview guide was used to facilitate focus group interviews. Qualitative and quantitative data was analysed separately. Quantitative data analysis was done and presented as descriptive statistics, Analysis of variance (ANOVA) Pearson’s correlation and T-test. For the purpose of testing the reliability of the scales of questions included in the questionnaire, the Cronbach’s alpha was used. Qualitative data analysis was done through the researcher`s critical reasoning and analysis of focus group discussions of interviewees. The research found out that lack teamwork, transparency and ineffective leadership are the root cause of failure to recognise strategic and operational boundaries that exist between SGBs and SMTs. Also understanding of the distinction and overlaps between School governance and school management is important to ensure strong relationships, trust and respect between the SGBs and the SMTs. More so, the research observed lack of strategic and operational synergy between SGBs and SMTs. Consequently, the research recommends the importance of training and development to both SGBs and SMTs so that they understand their roles and responsibilities as stated in the SASA Act. SGBs and the SMTs should strive to forge strategic and operational synergy. Trust and respect must prevail from the SGB since they are the major stakeholders of the schools. Effective communication was seen as crucial to building partnerships and ensuring collaboration. Finally, the research recommends that research should be conducted regularly in order to keep track of the state of school management and governments in public schools.
- Full Text:
- Authors: Ntsimango, Ncedile Stewart Lungisa
- Date: 2016
- Subjects: School management and organization -- South Africa -- Eastern Cape School boards -- South Africa -- Eastern Cape Education and state -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: http://hdl.handle.net/10353/1885 , vital:27573
- Description: School management and governance has become essential in improving quality of education in public schools (Caldwell, 2012). Furthermore, the existence of a well-established partnership between school governors and school managers is vital to ensure that students receive quality education. On this regard, the study sought to broaden an understanding the thin line between School Management Teams (SMT) and School Governing Bodies (SGB) which is frequently crossed by both parties while executing their roles and responsibilities. The population for the study was SGB members, SMT members and general staff members of public schools in the Eastern Cape Province. The study unit was Willowvale (KwaGcaleka kuGatyane) a circuit named after a great amaXhosa king Zwelidumile, King Zwelidumile Circuit. Purposive sampling method was used because collection of data required that respondents be familiar with the concepts of school management and school governance. A mixed method research methodology was used which include a combination of qualitative and quantitative research approaches. A self-administered questionnaire was used to collect quantitative data and an interview guide was used to facilitate focus group interviews. Qualitative and quantitative data was analysed separately. Quantitative data analysis was done and presented as descriptive statistics, Analysis of variance (ANOVA) Pearson’s correlation and T-test. For the purpose of testing the reliability of the scales of questions included in the questionnaire, the Cronbach’s alpha was used. Qualitative data analysis was done through the researcher`s critical reasoning and analysis of focus group discussions of interviewees. The research found out that lack teamwork, transparency and ineffective leadership are the root cause of failure to recognise strategic and operational boundaries that exist between SGBs and SMTs. Also understanding of the distinction and overlaps between School governance and school management is important to ensure strong relationships, trust and respect between the SGBs and the SMTs. More so, the research observed lack of strategic and operational synergy between SGBs and SMTs. Consequently, the research recommends the importance of training and development to both SGBs and SMTs so that they understand their roles and responsibilities as stated in the SASA Act. SGBs and the SMTs should strive to forge strategic and operational synergy. Trust and respect must prevail from the SGB since they are the major stakeholders of the schools. Effective communication was seen as crucial to building partnerships and ensuring collaboration. Finally, the research recommends that research should be conducted regularly in order to keep track of the state of school management and governments in public schools.
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The impact of human capital investment on economic growth : the case of South Africa
- Authors: Mutambirwa, Edward
- Date: 2016
- Subjects: Human capital -- South Africa Economic development -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10353/8272 , vital:32155
- Description: A country which prioritises in investing in human capital is believed to be a wealthy nation, meaning that the amount devoted to education and health sectors cannot be considered too much. The purpose of the study is to investigate the impact of human capital investment on economic growth, the case of South Africa. The study used time series data covering the period 1984-2014 to assess the impact of human capital investment on the economic growth of South Africa. The autoregressive distributed lag (ARDL) model and the error correction model (ECM) were employed in estimating the long run and short run relationship among variables of the study. The results of the study concluded that there is a positive long run relationship between total human capital investment (THCI) and South African economic growth. The results were in line with the hypothesis of the study and some empirical literature used. However, in the short run the results proved that there is no relationship between total human capital investment and economic growth in South Africa. Moreover, FDI and gross fixed capital formation proved to have a long run relationship with economic growth except exchange rate. The study recommends that the government should continue to devote most of its budget to human capital investment as it positively accelerates the economic growth of the country.
- Full Text:
- Authors: Mutambirwa, Edward
- Date: 2016
- Subjects: Human capital -- South Africa Economic development -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10353/8272 , vital:32155
- Description: A country which prioritises in investing in human capital is believed to be a wealthy nation, meaning that the amount devoted to education and health sectors cannot be considered too much. The purpose of the study is to investigate the impact of human capital investment on economic growth, the case of South Africa. The study used time series data covering the period 1984-2014 to assess the impact of human capital investment on the economic growth of South Africa. The autoregressive distributed lag (ARDL) model and the error correction model (ECM) were employed in estimating the long run and short run relationship among variables of the study. The results of the study concluded that there is a positive long run relationship between total human capital investment (THCI) and South African economic growth. The results were in line with the hypothesis of the study and some empirical literature used. However, in the short run the results proved that there is no relationship between total human capital investment and economic growth in South Africa. Moreover, FDI and gross fixed capital formation proved to have a long run relationship with economic growth except exchange rate. The study recommends that the government should continue to devote most of its budget to human capital investment as it positively accelerates the economic growth of the country.
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Assessment of bioflocculant production by two marine bacteria isolated from the bottom sediment of marine Algoa Bay
- Authors: Ntozonke, Ncedo
- Date: 2015
- Language: English
- Type: Thesis , Masters , MSc (Microbiology)
- Identifier: vital:11298 , http://hdl.handle.net/10353/d1021290
- Description: Bioflocculants are polymers, mostly, of microbial origin which floc out suspended particles from liquid medium. The ability of these biopolymers to remove suspended particles from solutions is termed bioflocculation, and the efficiency of flocculation activities depends on the characteristics of the flocculants. In comparison with conventionally used flocculants, bioflocculants have the advantage of being safe (no toxic effects known), biodegradable and harmlessness to the environment. The study assessed production of bioflocculant by two marine bacteria from the bottom sediment of marine environment. The 16S rDNA was used for identification, and the two bacteria species were identified as Enterococcus hirae and Bacillus thuringiensis. Factors affecting the production and activity of the bioflocculants produced by these two organisms were studied. The bacteria optimally produced bioflocculant with fructose (91.7%) and urea (91%) as sole carbon and nitrogen sources respectively. Mg2+ (87%) and Ca2+ (86%), likewise, served as best cation sources on the production of the bioflocculant at pH 5(93%). Additionally, the flocculating activity of the bioflocculant increased with the addition of Mg2+ (81%) and Na+ (81%), and the highest flocculating activity was at pH 5 of the kaolin clay. The Fourier transform infrared spectroscopy (FTIR) shows that the bioflocculant is a glycoprotein. The second bacterium (Bacillus thuringiensis) produced bioflocculant optimally when the media had mixed nitrogen sources (Urea, ammonium chloride and tryptone (67%)) and glucose (85.65%) as a sole carbon source, also Ca2+ (74.6%) was the best cation that induced the production of bioflocculant. After purification, the bioflocculant flocculated optimally in alkaline pH 12 (81%) in the presence of Mn2+ (73%) and Ca2+ (72.8%). Chemical analysis of the bioflocculant revealed it to be a polysaccharide. Both bioflocculants flocculate efficiently and can be used to replace synthetic flocculants in water treatment, wastewater, in downstream processing, and processing of food and chemicals and other industrial uses of flocculants. Challenges though (i) are to develop conditions for large scale production of the bioflocculant, (ii) to do further characterization of the both bioflocculants (iii) to assess the bioflocculants for treatments of water/wastewater, and to apply it in various industrial processes.
- Full Text:
- Authors: Ntozonke, Ncedo
- Date: 2015
- Language: English
- Type: Thesis , Masters , MSc (Microbiology)
- Identifier: vital:11298 , http://hdl.handle.net/10353/d1021290
- Description: Bioflocculants are polymers, mostly, of microbial origin which floc out suspended particles from liquid medium. The ability of these biopolymers to remove suspended particles from solutions is termed bioflocculation, and the efficiency of flocculation activities depends on the characteristics of the flocculants. In comparison with conventionally used flocculants, bioflocculants have the advantage of being safe (no toxic effects known), biodegradable and harmlessness to the environment. The study assessed production of bioflocculant by two marine bacteria from the bottom sediment of marine environment. The 16S rDNA was used for identification, and the two bacteria species were identified as Enterococcus hirae and Bacillus thuringiensis. Factors affecting the production and activity of the bioflocculants produced by these two organisms were studied. The bacteria optimally produced bioflocculant with fructose (91.7%) and urea (91%) as sole carbon and nitrogen sources respectively. Mg2+ (87%) and Ca2+ (86%), likewise, served as best cation sources on the production of the bioflocculant at pH 5(93%). Additionally, the flocculating activity of the bioflocculant increased with the addition of Mg2+ (81%) and Na+ (81%), and the highest flocculating activity was at pH 5 of the kaolin clay. The Fourier transform infrared spectroscopy (FTIR) shows that the bioflocculant is a glycoprotein. The second bacterium (Bacillus thuringiensis) produced bioflocculant optimally when the media had mixed nitrogen sources (Urea, ammonium chloride and tryptone (67%)) and glucose (85.65%) as a sole carbon source, also Ca2+ (74.6%) was the best cation that induced the production of bioflocculant. After purification, the bioflocculant flocculated optimally in alkaline pH 12 (81%) in the presence of Mn2+ (73%) and Ca2+ (72.8%). Chemical analysis of the bioflocculant revealed it to be a polysaccharide. Both bioflocculants flocculate efficiently and can be used to replace synthetic flocculants in water treatment, wastewater, in downstream processing, and processing of food and chemicals and other industrial uses of flocculants. Challenges though (i) are to develop conditions for large scale production of the bioflocculant, (ii) to do further characterization of the both bioflocculants (iii) to assess the bioflocculants for treatments of water/wastewater, and to apply it in various industrial processes.
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The impact of transport infrastructure investment on unemployment in South Africa
- Authors: Mayekiso, Sipokazi
- Date: 2015
- Subjects: Transportation -- South Africa Infrastructure (Economics) -- South Africa Economic development -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10353/2260 , vital:27720
- Description: The transport infrastructure investment has been a subject of many studies for some time, mainly in improving and predicting the economic growth of the country and improving employment in South Africa. Given this, the study examines the impact of transport infrastructure investment on unemployment in South Africa by using time series econometric analysis over the period 1982-2012. Some key variables considered include unemployment, real GDP, real exchange rate, real interest rate, and trade openness total infrastructure investment exclude transport infrastructure investment. To separate the long and short run effect, VECM was employed after ensuring stationarity of the series. The study found that a long run relationship exist between the unemployment, transport infrastructure investment, real GDP, real exchange rate , real interest rate, trade openness and total infrastructure investment exclude transport infrastructure investment. The Results of this thesis have implications for policy and academic work.
- Full Text:
- Authors: Mayekiso, Sipokazi
- Date: 2015
- Subjects: Transportation -- South Africa Infrastructure (Economics) -- South Africa Economic development -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10353/2260 , vital:27720
- Description: The transport infrastructure investment has been a subject of many studies for some time, mainly in improving and predicting the economic growth of the country and improving employment in South Africa. Given this, the study examines the impact of transport infrastructure investment on unemployment in South Africa by using time series econometric analysis over the period 1982-2012. Some key variables considered include unemployment, real GDP, real exchange rate, real interest rate, and trade openness total infrastructure investment exclude transport infrastructure investment. To separate the long and short run effect, VECM was employed after ensuring stationarity of the series. The study found that a long run relationship exist between the unemployment, transport infrastructure investment, real GDP, real exchange rate , real interest rate, trade openness and total infrastructure investment exclude transport infrastructure investment. The Results of this thesis have implications for policy and academic work.
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An investigation into the relationship of job satisfaction, organisational commitment and the intention to quit among academics and administrative employees at the University of Fort Hare
- Authors: Gomomo, Nokuzola Ruth
- Date: 2014
- Subjects: Job satisfaction -- South Africa -- Eastern Cape Employee retention -- South Africa -- Eastern Cape Employees -- Resignation -- South Africa -- Eastern Cape Labor turnover -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , M Com
- Identifier: http://hdl.handle.net/10353/1730 , vital:27553
- Description: University of Fort Hare Human Resource Department reports show evidence relating to high labour turnover. Between 2009 and 2012 there was a high degree of labour turnover. A total 1127 staff left the University. This study investigated the relationship between job satisfaction, organisational commitment and intention to quit among academics and administrative employees at the University of Fort Hare. Data was collected from a random sample of 289 employees of the University staff. To obtain data in this study a questionnaire was utilised. This questionnaire was divided into four sections viz, biographical information, measured ten-items which range from age to condition of employment, Halpern’s (1966) seven-level evaluation scale was utilised to measure job satisfaction, to measure organisational commitment, Meyer, and Allen (1984) 24-item rating point scale was applied and Canmann, Fichman, Jenkins and Klesh’s questionnaire was used to measure intention to quit. Data analysis was performed by way of several statistical techniques, including the Pearson Product Moment Correlation Technique and Multiple Regression analysis. The results obtained revealed that job satisfaction has a significant positive correlation with intention to leave while organisational commitment showed no substantial correlation with intention to quit work.
- Full Text:
- Authors: Gomomo, Nokuzola Ruth
- Date: 2014
- Subjects: Job satisfaction -- South Africa -- Eastern Cape Employee retention -- South Africa -- Eastern Cape Employees -- Resignation -- South Africa -- Eastern Cape Labor turnover -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , M Com
- Identifier: http://hdl.handle.net/10353/1730 , vital:27553
- Description: University of Fort Hare Human Resource Department reports show evidence relating to high labour turnover. Between 2009 and 2012 there was a high degree of labour turnover. A total 1127 staff left the University. This study investigated the relationship between job satisfaction, organisational commitment and intention to quit among academics and administrative employees at the University of Fort Hare. Data was collected from a random sample of 289 employees of the University staff. To obtain data in this study a questionnaire was utilised. This questionnaire was divided into four sections viz, biographical information, measured ten-items which range from age to condition of employment, Halpern’s (1966) seven-level evaluation scale was utilised to measure job satisfaction, to measure organisational commitment, Meyer, and Allen (1984) 24-item rating point scale was applied and Canmann, Fichman, Jenkins and Klesh’s questionnaire was used to measure intention to quit. Data analysis was performed by way of several statistical techniques, including the Pearson Product Moment Correlation Technique and Multiple Regression analysis. The results obtained revealed that job satisfaction has a significant positive correlation with intention to leave while organisational commitment showed no substantial correlation with intention to quit work.
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