Investigation into the characteristics and possible applications of biomass gasification by-products from a downdraft gasifier system
- Authors: Melapi, Aviwe
- Date: 2015
- Subjects: Biomass gasification -- South Africa -- Eastern Cape , Renewable energy sources -- South Africa -- Eastern Cape , Biomass energy -- South Africa -- Eastern Cape , Crop residue management -- South Africa -- Eastern Cape , Coal gasification -- South Africa -- Eastern Cape , Lignocellulose -- Biodegradation -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc (Chemistry)
- Identifier: vital:11348 , http://hdl.handle.net/10353/d1020174 , Biomass gasification -- South Africa -- Eastern Cape , Renewable energy sources -- South Africa -- Eastern Cape , Biomass energy -- South Africa -- Eastern Cape , Crop residue management -- South Africa -- Eastern Cape , Coal gasification -- South Africa -- Eastern Cape , Lignocellulose -- Biodegradation -- South Africa -- Eastern Cape
- Description: Biomass gasification has attracted the interest of researchers because it produces zero carbon to the atmosphere. This technology does not only produce syngas but also the byproducts which can be used for various application depending on quality.The study conducted at Melani village in Alice in the Eastern Cape of South Africa was aimed at investigating the possible applications of the gasification byproducts instead of being thrown away. Pine wood was employed as the parent feedstock material for the gasifier. Biomass gasification by-products were then collected for further analysis. The studied by-products included tar(condensate), char, soot and resin. These materials were also blended to produce strong materials.The essence of the blending was to generate ideal material that is strong but light at the same time.The elemental analysis of the samples performed by CHNS analyser revealed that carbon element is in large quantities in all samples. The FTIR spectra showed almost similar results for all the studied samples, since the samples are end products of lignocellulosegasification. SEM gave the sticky images of resin as well as porous char structures. Char showed a higher heating value of 35.37MJ/Kg when compared to other by-products samples.
- Full Text:
- Date Issued: 2015
- Authors: Melapi, Aviwe
- Date: 2015
- Subjects: Biomass gasification -- South Africa -- Eastern Cape , Renewable energy sources -- South Africa -- Eastern Cape , Biomass energy -- South Africa -- Eastern Cape , Crop residue management -- South Africa -- Eastern Cape , Coal gasification -- South Africa -- Eastern Cape , Lignocellulose -- Biodegradation -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc (Chemistry)
- Identifier: vital:11348 , http://hdl.handle.net/10353/d1020174 , Biomass gasification -- South Africa -- Eastern Cape , Renewable energy sources -- South Africa -- Eastern Cape , Biomass energy -- South Africa -- Eastern Cape , Crop residue management -- South Africa -- Eastern Cape , Coal gasification -- South Africa -- Eastern Cape , Lignocellulose -- Biodegradation -- South Africa -- Eastern Cape
- Description: Biomass gasification has attracted the interest of researchers because it produces zero carbon to the atmosphere. This technology does not only produce syngas but also the byproducts which can be used for various application depending on quality.The study conducted at Melani village in Alice in the Eastern Cape of South Africa was aimed at investigating the possible applications of the gasification byproducts instead of being thrown away. Pine wood was employed as the parent feedstock material for the gasifier. Biomass gasification by-products were then collected for further analysis. The studied by-products included tar(condensate), char, soot and resin. These materials were also blended to produce strong materials.The essence of the blending was to generate ideal material that is strong but light at the same time.The elemental analysis of the samples performed by CHNS analyser revealed that carbon element is in large quantities in all samples. The FTIR spectra showed almost similar results for all the studied samples, since the samples are end products of lignocellulosegasification. SEM gave the sticky images of resin as well as porous char structures. Char showed a higher heating value of 35.37MJ/Kg when compared to other by-products samples.
- Full Text:
- Date Issued: 2015
A critical assessment of the public service commission in fighting corruption in South Africa
- Authors: Gola, Ndumiso Helton
- Date: 2014
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: http://hdl.handle.net/10353/1078 , vital:26524
- Description: Using a qualitative research design, this study examined the role of the Public Service Commission (PSC) in curbing corruption in the Eastern Cape Province in South Africa. The Public Service Commission is an independent and impartial body create. Using a qualitative research design, this study examined the role of the Public Service Commission (PSC) in curbing corruption in the Eastern Cape Province in South Africa. The Public Service Commission is an independent and impartial body created by the Constitution, in 1996, to enhance excellence in governance within the Public Service by promoting a professional and ethical environment and adding value to a public administration that is accountable, equitable, efficient, effective, corruption-free and responsive to the needs of the people of South Africa. The study used a desktop approach whereby data was collected from books, journals, articles, media reports and surveys done by other scholars. The findings of the study highlighted that corruption is rampant in South Africa in different sectors and departments. Corruption in South Africa has reached epidemic levels and threatens the lives of all South African citizens. The role of the PSC has been found to be weaker and not meeting its role of fighting corruption as there are more failures than successes since its inception. This has been attributed to challenges such as human resources and financial constraints. The study however suggests recommendations which include extension and possible employment of dedicated permanent staff with relevant experience to address their capacity needs.d by the Constitution, in 1996, to enhance excellence in governance within the Public Service by promoting a professional and ethical environment and adding value to a public administration that is accountable, equitable, efficient, effective, corruption-free and responsive to the needs of the people of South Africa. The study used a desktop approach whereby data was collected from books, journals, articles, media reports and surveys done by other scholars. The findings of the study highlighted that corruption is rampant in South Africa in different sectors and departments. Corruption in South Africa has reached epidemic levels and threatens the lives of all South African citizens. The role of the PSC has been found to be weaker and not meeting its role of fighting corruption as there are more failures than successes since its inception. This has been attributed to challenges such as human resources and financial constraints. The study however suggests recommendations which include extension and possible employment of dedicated permanent staff with relevant experience to address their capacity needs.
- Full Text:
- Date Issued: 2014
- Authors: Gola, Ndumiso Helton
- Date: 2014
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: http://hdl.handle.net/10353/1078 , vital:26524
- Description: Using a qualitative research design, this study examined the role of the Public Service Commission (PSC) in curbing corruption in the Eastern Cape Province in South Africa. The Public Service Commission is an independent and impartial body create. Using a qualitative research design, this study examined the role of the Public Service Commission (PSC) in curbing corruption in the Eastern Cape Province in South Africa. The Public Service Commission is an independent and impartial body created by the Constitution, in 1996, to enhance excellence in governance within the Public Service by promoting a professional and ethical environment and adding value to a public administration that is accountable, equitable, efficient, effective, corruption-free and responsive to the needs of the people of South Africa. The study used a desktop approach whereby data was collected from books, journals, articles, media reports and surveys done by other scholars. The findings of the study highlighted that corruption is rampant in South Africa in different sectors and departments. Corruption in South Africa has reached epidemic levels and threatens the lives of all South African citizens. The role of the PSC has been found to be weaker and not meeting its role of fighting corruption as there are more failures than successes since its inception. This has been attributed to challenges such as human resources and financial constraints. The study however suggests recommendations which include extension and possible employment of dedicated permanent staff with relevant experience to address their capacity needs.d by the Constitution, in 1996, to enhance excellence in governance within the Public Service by promoting a professional and ethical environment and adding value to a public administration that is accountable, equitable, efficient, effective, corruption-free and responsive to the needs of the people of South Africa. The study used a desktop approach whereby data was collected from books, journals, articles, media reports and surveys done by other scholars. The findings of the study highlighted that corruption is rampant in South Africa in different sectors and departments. Corruption in South Africa has reached epidemic levels and threatens the lives of all South African citizens. The role of the PSC has been found to be weaker and not meeting its role of fighting corruption as there are more failures than successes since its inception. This has been attributed to challenges such as human resources and financial constraints. The study however suggests recommendations which include extension and possible employment of dedicated permanent staff with relevant experience to address their capacity needs.
- Full Text:
- Date Issued: 2014
Human Trafficking: narratives of non-governmental organisation caregivers in the Eastern Cape
- Authors: Nabo, Sandisiwe Sifanelwe
- Date: 2013
- Subjects: Human trafficking , Caregivers -- South Africa -- Eastern Cape , Human trafficking -- South Africa -- Eastern Cape , Human trafficking -- Prevention , Non-governmental organizations -- South Africa -- Eastern Cape , Economy
- Language: English
- Type: Thesis , Masters , M Soc Sc (Psych)
- Identifier: vital:11613 , http://hdl.handle.net/10353/d1005987 , Human trafficking , Caregivers -- South Africa -- Eastern Cape , Human trafficking -- South Africa -- Eastern Cape , Human trafficking -- Prevention , Non-governmental organizations -- South Africa -- Eastern Cape , Economy
- Description: Human trafficking is a social problem that has left no state or country immune to its effects. Literature indicates that human trafficking causes economic social and physical disruptions. Families are left broken and communities divided and children left homeless. Its victims are mostly women and children who come from low socio-economic status. Studies have been conducted on the roles of Non-Governmental Organisation`s across the globe but reports on the roles of NGOs in the Eastern Cape are unknown. This study reports on the roles of Non-Governmental Organisation`s (caregivers) in the Eastern Cape. This investigation is an exploratory qualitative study. A purposeful sampling strategy was used to recruit the Non-governmental organization (caregivers). In depth open ended interviews were conducted. The theories of Interpretative Phenomenological Analysis (IPA) and socio-ecological theory were used to discuss the findings of the study. The findings of the study were categorized into four main themes including; knowledge of human trafficking, causes of human trafficking, roles of non-governmental organization (caregivers) in the Eastern Cape and strategies available in the Eastern Cape Province. The findings showed that human trafficking is present in the Eastern Cape. Abused and neglected children are more likely to become potential victims of human trafficking. The caregivers play a huge vital role in the fight against human trafficking. Lastly, the strategies implemented are not as effective as they would have been if adequate legislation was passed against human trafficking.
- Full Text:
- Date Issued: 2013
- Authors: Nabo, Sandisiwe Sifanelwe
- Date: 2013
- Subjects: Human trafficking , Caregivers -- South Africa -- Eastern Cape , Human trafficking -- South Africa -- Eastern Cape , Human trafficking -- Prevention , Non-governmental organizations -- South Africa -- Eastern Cape , Economy
- Language: English
- Type: Thesis , Masters , M Soc Sc (Psych)
- Identifier: vital:11613 , http://hdl.handle.net/10353/d1005987 , Human trafficking , Caregivers -- South Africa -- Eastern Cape , Human trafficking -- South Africa -- Eastern Cape , Human trafficking -- Prevention , Non-governmental organizations -- South Africa -- Eastern Cape , Economy
- Description: Human trafficking is a social problem that has left no state or country immune to its effects. Literature indicates that human trafficking causes economic social and physical disruptions. Families are left broken and communities divided and children left homeless. Its victims are mostly women and children who come from low socio-economic status. Studies have been conducted on the roles of Non-Governmental Organisation`s across the globe but reports on the roles of NGOs in the Eastern Cape are unknown. This study reports on the roles of Non-Governmental Organisation`s (caregivers) in the Eastern Cape. This investigation is an exploratory qualitative study. A purposeful sampling strategy was used to recruit the Non-governmental organization (caregivers). In depth open ended interviews were conducted. The theories of Interpretative Phenomenological Analysis (IPA) and socio-ecological theory were used to discuss the findings of the study. The findings of the study were categorized into four main themes including; knowledge of human trafficking, causes of human trafficking, roles of non-governmental organization (caregivers) in the Eastern Cape and strategies available in the Eastern Cape Province. The findings showed that human trafficking is present in the Eastern Cape. Abused and neglected children are more likely to become potential victims of human trafficking. The caregivers play a huge vital role in the fight against human trafficking. Lastly, the strategies implemented are not as effective as they would have been if adequate legislation was passed against human trafficking.
- Full Text:
- Date Issued: 2013
The nature of China’s role in development of Africa: the case of Zambia and Zimbabwe
- Authors: Hogwe, Fortune
- Date: 2013
- Language: English
- Type: Thesis , Masters , M Soc Sc (Dev)
- Identifier: vital:11445 , http://hdl.handle.net/10353/d1015048
- Description: China’s economic involvement in Africa has increased rapidly over the past decade. China’s involvement in Africa has become one of the controversial topics in the development literature. The background of the study is that Sino-African relations can be grouped into two phases thus: past relations and contemporary relations. The study notes that past relations are different from contemporary relations because while the former are mainly characterised by solidarity, the latter are mainly categorized by economic relations. The study is a historical narrative of China’s economic involvement and the impact in Africa over the past decade. The study draws its arguments from the myths which label Chinese resurgence into Africa as neo-colonialism and that China’s reinvigorated interest in Africa is entirely based upon its own economic pursuits since it has developed into an economic powerhouse over the past decade. Additionally, it has been reported that China disregard good governance in Africa by engaging African governments which are corrupt and which possess poor track human rights. In order to determine if China is pushed into Africa by its economic pursuits and whether China disregards good governance, the study uses two case studies thus: Zimbabwe and Zambia. Zimbabwe one the one hand represents a pariah state, which is viewed as corrupt and a nation which has a poor record of human rights while Zambia, on the other hand represents illiberal regimes and democratic regimes with commodity based economies. The research discovered that China’s economic involvement in Africa presents both opportunities and challenges for African countries. In some instances, China has aided GDP growth in some African countries while in some instances, it has increased unemployment. In conclusion, the study also discovered that China does not involve itself in African domestic affairs hence it has been criticised for encouraging corruption and abusing of human rights.However, the study notes that these issues are mainly domestic hence Africans are entirely to be blamed for such practices, not China.
- Full Text:
- Date Issued: 2013
- Authors: Hogwe, Fortune
- Date: 2013
- Language: English
- Type: Thesis , Masters , M Soc Sc (Dev)
- Identifier: vital:11445 , http://hdl.handle.net/10353/d1015048
- Description: China’s economic involvement in Africa has increased rapidly over the past decade. China’s involvement in Africa has become one of the controversial topics in the development literature. The background of the study is that Sino-African relations can be grouped into two phases thus: past relations and contemporary relations. The study notes that past relations are different from contemporary relations because while the former are mainly characterised by solidarity, the latter are mainly categorized by economic relations. The study is a historical narrative of China’s economic involvement and the impact in Africa over the past decade. The study draws its arguments from the myths which label Chinese resurgence into Africa as neo-colonialism and that China’s reinvigorated interest in Africa is entirely based upon its own economic pursuits since it has developed into an economic powerhouse over the past decade. Additionally, it has been reported that China disregard good governance in Africa by engaging African governments which are corrupt and which possess poor track human rights. In order to determine if China is pushed into Africa by its economic pursuits and whether China disregards good governance, the study uses two case studies thus: Zimbabwe and Zambia. Zimbabwe one the one hand represents a pariah state, which is viewed as corrupt and a nation which has a poor record of human rights while Zambia, on the other hand represents illiberal regimes and democratic regimes with commodity based economies. The research discovered that China’s economic involvement in Africa presents both opportunities and challenges for African countries. In some instances, China has aided GDP growth in some African countries while in some instances, it has increased unemployment. In conclusion, the study also discovered that China does not involve itself in African domestic affairs hence it has been criticised for encouraging corruption and abusing of human rights.However, the study notes that these issues are mainly domestic hence Africans are entirely to be blamed for such practices, not China.
- Full Text:
- Date Issued: 2013
Prevalence, seasonal trends and incidences of cattle tuberculosis and brucellosis in the Cacadu municipality, Eastern Cape, South Africa
- Authors: Nombebe, Thobeka
- Date: 2012
- Subjects: Tuberculosis in cattle -- South Africa -- Eastern Cape , Brucellosis in animals -- South Africa -- Eastern Cape , Dairy farms -- South Africa -- Eastern Cape , Mycobacterium tuberculosis -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc (Biostatistics and Epidemiology)
- Identifier: vital:11783 , http://hdl.handle.net/10353/d1016200 , Tuberculosis in cattle -- South Africa -- Eastern Cape , Brucellosis in animals -- South Africa -- Eastern Cape , Dairy farms -- South Africa -- Eastern Cape , Mycobacterium tuberculosis -- South Africa -- Eastern Cape
- Description: A cross-sectional study was conducted from February 2011 to August 2012 to investigate the status and identify risk factors for Bovine Tuberculosis (BTB) and cattle Brucellosis. A total of 1277 cattle from 6 selected dairy farms were tested. The farms were purposively selected on suspected risk. Samples were analysed using Rose Bengal Test (RBPT) and Complement Fixation Test (CFT) for Brucellosis and Comparative Intradermal Tuberculin Test (CITT) for BTB. The results revealed the overall prevalence of 1.6% for Brucellosis and no BTB was found. Logistic regression analysis revealed that age of cattle, herd size and number of calves a cow has had significant association with Brucellosis with p-values 0.0071, 0.0490 and 0.000 respectively. The role of location (p>0.05), gender (p>0.05) and breed (p>0.05) in the occurrence of the disease was not statistically significant at α=0.05, although higher rates were obtained in females and Jersey breed. Questionnaires were also administered to 47 individuals a total of 12 females and 35 males. Most respondents were not aware about cattle brucellosis and cattle tuberculosis. Consumption of raw or unpasteurized milk still occurs with 74.75% of respondents revealed.
- Full Text:
- Date Issued: 2012
- Authors: Nombebe, Thobeka
- Date: 2012
- Subjects: Tuberculosis in cattle -- South Africa -- Eastern Cape , Brucellosis in animals -- South Africa -- Eastern Cape , Dairy farms -- South Africa -- Eastern Cape , Mycobacterium tuberculosis -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc (Biostatistics and Epidemiology)
- Identifier: vital:11783 , http://hdl.handle.net/10353/d1016200 , Tuberculosis in cattle -- South Africa -- Eastern Cape , Brucellosis in animals -- South Africa -- Eastern Cape , Dairy farms -- South Africa -- Eastern Cape , Mycobacterium tuberculosis -- South Africa -- Eastern Cape
- Description: A cross-sectional study was conducted from February 2011 to August 2012 to investigate the status and identify risk factors for Bovine Tuberculosis (BTB) and cattle Brucellosis. A total of 1277 cattle from 6 selected dairy farms were tested. The farms were purposively selected on suspected risk. Samples were analysed using Rose Bengal Test (RBPT) and Complement Fixation Test (CFT) for Brucellosis and Comparative Intradermal Tuberculin Test (CITT) for BTB. The results revealed the overall prevalence of 1.6% for Brucellosis and no BTB was found. Logistic regression analysis revealed that age of cattle, herd size and number of calves a cow has had significant association with Brucellosis with p-values 0.0071, 0.0490 and 0.000 respectively. The role of location (p>0.05), gender (p>0.05) and breed (p>0.05) in the occurrence of the disease was not statistically significant at α=0.05, although higher rates were obtained in females and Jersey breed. Questionnaires were also administered to 47 individuals a total of 12 females and 35 males. Most respondents were not aware about cattle brucellosis and cattle tuberculosis. Consumption of raw or unpasteurized milk still occurs with 74.75% of respondents revealed.
- Full Text:
- Date Issued: 2012
Development of isiXhosa text-to-speech modules to support e-Services in marginalized rural areas
- Authors: Mhlana, Siphe
- Date: 2011
- Subjects: Xhosa language -- South Africa -- Eastern Cape , Information technology -- South Africa -- Eastern Cape , Text processing (Computer science) -- South Africa -- Eastern Cape , Literacy -- South Africa -- Eastern Cape , Digital divide -- South Africa -- Eastern Cape , Mobile communication systems -- South Africa -- Eastern Cape , Transmission of texts -- Data processing , Electronic publishing -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc (Computer Science)
- Identifier: vital:11388 , http://hdl.handle.net/10353/495 , Xhosa language -- South Africa -- Eastern Cape , Information technology -- South Africa -- Eastern Cape , Text processing (Computer science) -- South Africa -- Eastern Cape , Literacy -- South Africa -- Eastern Cape , Digital divide -- South Africa -- Eastern Cape , Mobile communication systems -- South Africa -- Eastern Cape , Transmission of texts -- Data processing , Electronic publishing -- South Africa -- Eastern Cape
- Description: Information and Communication Technology (ICT) projects are being initiated and deployed in marginalized areas to help improve the standard of living for community members. This has lead to a new field, which is responsible for information processing and knowledge development in rural areas, called Information and Communication Technology for Development (ICT4D). An ICT4D projects has been implemented in a marginalized area called Dwesa; this is a rural area situated in the wild coast of the former homelandof Transkei, in the Eastern Cape Province of South Africa. In this rural community there are e-Service projects which have been developed and deployed to support the already existent ICT infrastructure. Some of these projects include the e-Commerce platform, e-Judiciary service, e-Health and e-Government portal. Although these projects are deployed in this area, community members face a language and literacy barrier because these services are typically accessed through English textual interfaces. This becomes a challenge because their language of communication is isiXhosa and some of the community members are illiterate. Most of the rural areas consist of illiterate people who cannot read and write isiXhosa but can only speak the language. This problem of illiteracy in rural areas affects both the youth and the elderly. This research seeks to design, develop and implement software modules that can be used to convert isiXhosa text into natural sounding isiXhosa speech. Such an application is called a Text-to-Speech (TTS) system. The main objective of this research is to improve ICT4D eServices’ usability through the development of an isiXhosa Text-to-Speech system. This research is undertaken within the context of Siyakhula Living Lab (SLL), an ICT4D intervention towards improving the lives of rural communities of South Africa in an attempt to bridge the digital divide. Thedeveloped TTS modules were subsequently tested to determine their applicability to improve eServices usability. The results show acceptable levels of usability as having produced audio utterances for the isiXhosa Text-To-Speech system for marginalized areas.
- Full Text:
- Date Issued: 2011
- Authors: Mhlana, Siphe
- Date: 2011
- Subjects: Xhosa language -- South Africa -- Eastern Cape , Information technology -- South Africa -- Eastern Cape , Text processing (Computer science) -- South Africa -- Eastern Cape , Literacy -- South Africa -- Eastern Cape , Digital divide -- South Africa -- Eastern Cape , Mobile communication systems -- South Africa -- Eastern Cape , Transmission of texts -- Data processing , Electronic publishing -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc (Computer Science)
- Identifier: vital:11388 , http://hdl.handle.net/10353/495 , Xhosa language -- South Africa -- Eastern Cape , Information technology -- South Africa -- Eastern Cape , Text processing (Computer science) -- South Africa -- Eastern Cape , Literacy -- South Africa -- Eastern Cape , Digital divide -- South Africa -- Eastern Cape , Mobile communication systems -- South Africa -- Eastern Cape , Transmission of texts -- Data processing , Electronic publishing -- South Africa -- Eastern Cape
- Description: Information and Communication Technology (ICT) projects are being initiated and deployed in marginalized areas to help improve the standard of living for community members. This has lead to a new field, which is responsible for information processing and knowledge development in rural areas, called Information and Communication Technology for Development (ICT4D). An ICT4D projects has been implemented in a marginalized area called Dwesa; this is a rural area situated in the wild coast of the former homelandof Transkei, in the Eastern Cape Province of South Africa. In this rural community there are e-Service projects which have been developed and deployed to support the already existent ICT infrastructure. Some of these projects include the e-Commerce platform, e-Judiciary service, e-Health and e-Government portal. Although these projects are deployed in this area, community members face a language and literacy barrier because these services are typically accessed through English textual interfaces. This becomes a challenge because their language of communication is isiXhosa and some of the community members are illiterate. Most of the rural areas consist of illiterate people who cannot read and write isiXhosa but can only speak the language. This problem of illiteracy in rural areas affects both the youth and the elderly. This research seeks to design, develop and implement software modules that can be used to convert isiXhosa text into natural sounding isiXhosa speech. Such an application is called a Text-to-Speech (TTS) system. The main objective of this research is to improve ICT4D eServices’ usability through the development of an isiXhosa Text-to-Speech system. This research is undertaken within the context of Siyakhula Living Lab (SLL), an ICT4D intervention towards improving the lives of rural communities of South Africa in an attempt to bridge the digital divide. Thedeveloped TTS modules were subsequently tested to determine their applicability to improve eServices usability. The results show acceptable levels of usability as having produced audio utterances for the isiXhosa Text-To-Speech system for marginalized areas.
- Full Text:
- Date Issued: 2011
- «
- ‹
- 1
- ›
- »