The implementation of inclusion policy for learners with special education needs: a case study of four primary schools in the Grahamstown District
- Authors: Shadaya, Girlie
- Date: 2012
- Subjects: Education and state -- South Africa , Inclusive education -- South Africa -- Eastern Cape , Teachers -- Training of -- South Africa -- Eastern Cape , Education, Primary -- South Africa -- Eastern Cape , Children with disabilities -- Education -- South Africa -- Eastern Cape , Special education -- South Africa -- Eastern Cape , Grahamstown (South Africa)
- Language: English
- Type: Thesis , Masters , M Ed
- Identifier: vital:16183 , http://hdl.handle.net/10353/d1006239 , Education and state -- South Africa , Inclusive education -- South Africa -- Eastern Cape , Teachers -- Training of -- South Africa -- Eastern Cape , Education, Primary -- South Africa -- Eastern Cape , Children with disabilities -- Education -- South Africa -- Eastern Cape , Special education -- South Africa -- Eastern Cape , Grahamstown (South Africa)
- Description: Inclusion is successful when all stakeholders in the education system accept the challenge to work together and to do their fair share of educating all children. Although the teacher has been placed at the heart of the system as a key person in shaping inclusion, the district office (Department of Education), schools, teachers and parents must engage in collaborative team-driven decision making that is focused on interventions designed to enhance social outcomes for learners. The aim of this study was to assess the implementation of the inclusion policy for learners with special education needs. This study made use a mixed method research approach which engaged both qualitative and quantitative research methodologies. A total of twenty primary school teachers filled a questionnaire that had three parts: (i) Teacher demographics, (ii) Instructional modifications and (iii) Teaching strategies. Interviews, documents and observations were also used to collect data. Data was analysed by statistical and non-statistical procedures. Results showed that the inclusion policy is being implemented in schools. However, there are challenges that are being faced. For one, teachers have not received adequate training with regards to inclusive education. Staff development workshops to try and address this challenge are minimal, there is not enough collaboration being demonstrated by the different stakeholders with regards to support and monitoring the implementation process. The study recommends that all teachers and other personnel in the school receive adequate training. Also, the need for support must be met. Further studies could consider attitudes to inclusive education and the relationship between learner success and teacher preparedness in inclusive educational models.
- Full Text:
- Authors: Shadaya, Girlie
- Date: 2012
- Subjects: Education and state -- South Africa , Inclusive education -- South Africa -- Eastern Cape , Teachers -- Training of -- South Africa -- Eastern Cape , Education, Primary -- South Africa -- Eastern Cape , Children with disabilities -- Education -- South Africa -- Eastern Cape , Special education -- South Africa -- Eastern Cape , Grahamstown (South Africa)
- Language: English
- Type: Thesis , Masters , M Ed
- Identifier: vital:16183 , http://hdl.handle.net/10353/d1006239 , Education and state -- South Africa , Inclusive education -- South Africa -- Eastern Cape , Teachers -- Training of -- South Africa -- Eastern Cape , Education, Primary -- South Africa -- Eastern Cape , Children with disabilities -- Education -- South Africa -- Eastern Cape , Special education -- South Africa -- Eastern Cape , Grahamstown (South Africa)
- Description: Inclusion is successful when all stakeholders in the education system accept the challenge to work together and to do their fair share of educating all children. Although the teacher has been placed at the heart of the system as a key person in shaping inclusion, the district office (Department of Education), schools, teachers and parents must engage in collaborative team-driven decision making that is focused on interventions designed to enhance social outcomes for learners. The aim of this study was to assess the implementation of the inclusion policy for learners with special education needs. This study made use a mixed method research approach which engaged both qualitative and quantitative research methodologies. A total of twenty primary school teachers filled a questionnaire that had three parts: (i) Teacher demographics, (ii) Instructional modifications and (iii) Teaching strategies. Interviews, documents and observations were also used to collect data. Data was analysed by statistical and non-statistical procedures. Results showed that the inclusion policy is being implemented in schools. However, there are challenges that are being faced. For one, teachers have not received adequate training with regards to inclusive education. Staff development workshops to try and address this challenge are minimal, there is not enough collaboration being demonstrated by the different stakeholders with regards to support and monitoring the implementation process. The study recommends that all teachers and other personnel in the school receive adequate training. Also, the need for support must be met. Further studies could consider attitudes to inclusive education and the relationship between learner success and teacher preparedness in inclusive educational models.
- Full Text:
Assessing the effectivity of poverty eradication strategies on communities in the Eastern Cape province: the case of Ngqushwa local Municipality in Amathole District (2008- 2011)
- Authors: Seyisi, Sakhumzi Patrick
- Date: 2012
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:11658 , http://hdl.handle.net/10353/d1007042
- Description: This study explored information about the strategies on communities to eradicate poverty through interactive process with relevant sources. An expedient sample of participants was drawn from strategic position that deal with poverty eradication in the area of Amathole District in Ngqushwa Local Municipality, Eastern Cape. The collection of data was done though focus groups, questionnaires, scheduled interviews, and observation. The results acquired from the analysed thesis of the study signify that the poverty alleviation projects are confronted with diverse challenges that impede their potential growth and long term viability. Key to these constraints are issues pertaining to lack of capacity from project members, lack of resources, lack of financial and project management skills.The study was useful in assessing the strategies so as to draw logical strength and wisdom to provide lasting solution to the problem facing poverty alleviation projects. At a broader scale, the future of these projects I guaranteed integrated approach , resource provision, capacity enhancement and shared understanding in conceptualization of poverty alleviation projects. The identified challenges can be resolved provided that, the Ngqushwa Municipalities and the Department of Social Development, as a champion of poverty alleviation of integrated developmental approach. This noble objective can be achieved if other government department, institutions and spheres are also committed to cause.
- Full Text:
- Authors: Seyisi, Sakhumzi Patrick
- Date: 2012
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:11658 , http://hdl.handle.net/10353/d1007042
- Description: This study explored information about the strategies on communities to eradicate poverty through interactive process with relevant sources. An expedient sample of participants was drawn from strategic position that deal with poverty eradication in the area of Amathole District in Ngqushwa Local Municipality, Eastern Cape. The collection of data was done though focus groups, questionnaires, scheduled interviews, and observation. The results acquired from the analysed thesis of the study signify that the poverty alleviation projects are confronted with diverse challenges that impede their potential growth and long term viability. Key to these constraints are issues pertaining to lack of capacity from project members, lack of resources, lack of financial and project management skills.The study was useful in assessing the strategies so as to draw logical strength and wisdom to provide lasting solution to the problem facing poverty alleviation projects. At a broader scale, the future of these projects I guaranteed integrated approach , resource provision, capacity enhancement and shared understanding in conceptualization of poverty alleviation projects. The identified challenges can be resolved provided that, the Ngqushwa Municipalities and the Department of Social Development, as a champion of poverty alleviation of integrated developmental approach. This noble objective can be achieved if other government department, institutions and spheres are also committed to cause.
- Full Text:
Phytochemical analysis and bioactivity of Garcinia Kola (Heckel) seeds on selected bacterial pathogens
- Seanego, Christinah Tshephisho
- Authors: Seanego, Christinah Tshephisho
- Date: 2012
- Subjects: Drug resistance in microorganisms , Garcinia , Antibiotics , Medicinal plants , Microbial sensitivity tests , Streptococcal infections , Streptococcus , Staphylococcus aureus infections , Salmonella typhimurium , Traditional medicine
- Language: English
- Type: Thesis , Masters , MSc (Microbiology)
- Identifier: vital:11259 , http://hdl.handle.net/10353/420 , Drug resistance in microorganisms , Garcinia , Antibiotics , Medicinal plants , Microbial sensitivity tests , Streptococcal infections , Streptococcus , Staphylococcus aureus infections , Salmonella typhimurium , Traditional medicine
- Description: Garcinia kola is one of the plants used in folklore remedies for the treatment of microbial infections. Bacterial resistance to commonly used antibiotics has necessitated the search for newer and alternative compounds for the treatment of drug resistant microbial infections. This study focuses on the bioactivity of G. kola seeds on Streptococcus pyogenes (ATCC 49399), Staphylococcus aureus (NCTC 6571), Plesiomonas Shigelloides (ATCC 51903) and Salmonella typhimurium (ATCC 13311), organisms which can cause illnesses from mild to severe with potentially fatal outcomes. The crude ethyl acetate, ethanol, methanol, acetone and aqueous extracts were screened by agar-well diffusion method and the activities of the extract were further determined by Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC) assays. The inhibition zones ranged from 0 - 24 mm, while MIC and MBC of the extract ranged between 0.04 - 1.25 mg/mL and 0.081 - 2.5 mg/mL respectively. Chloroform/ Ethyl Acetate/ Formic acid (CEF) solvent system separated more active compounds followed by Ethyl Acetate/ Methanol/ Water (EMW) and Benzene/ Ethanol/ Ammonium Hydroxide (BEA). The extracts were fractionated by Thin Layer Chromatography (TLC). Bioautography was used to assess the activity of the possible classes of compounds present in the more active extracts. Column chromatography was used to purify the active compounds from the mixture while Gas Chromatography-Mass Spectrometry (GC-MS) was used to identify the phyto components of the fractions. The MIC of the fractions ranged between 0.0006 - 2.5 mg/mL. CEF 3 (F3), CEF 11 (F11) and CEF 12 (F12) revealed the presence of high levels fatty acids Linoleic acid, 1, 2-Benzenedicarboxylic acid and 2, 3-Dihydro-3, 5-dihydroxy-6-methyl, respectively. The results obtained from this study justify the use of this plant in traditional medicine and provide leads which could be further exploited for the development of new and potent antimicrobials.
- Full Text:
- Authors: Seanego, Christinah Tshephisho
- Date: 2012
- Subjects: Drug resistance in microorganisms , Garcinia , Antibiotics , Medicinal plants , Microbial sensitivity tests , Streptococcal infections , Streptococcus , Staphylococcus aureus infections , Salmonella typhimurium , Traditional medicine
- Language: English
- Type: Thesis , Masters , MSc (Microbiology)
- Identifier: vital:11259 , http://hdl.handle.net/10353/420 , Drug resistance in microorganisms , Garcinia , Antibiotics , Medicinal plants , Microbial sensitivity tests , Streptococcal infections , Streptococcus , Staphylococcus aureus infections , Salmonella typhimurium , Traditional medicine
- Description: Garcinia kola is one of the plants used in folklore remedies for the treatment of microbial infections. Bacterial resistance to commonly used antibiotics has necessitated the search for newer and alternative compounds for the treatment of drug resistant microbial infections. This study focuses on the bioactivity of G. kola seeds on Streptococcus pyogenes (ATCC 49399), Staphylococcus aureus (NCTC 6571), Plesiomonas Shigelloides (ATCC 51903) and Salmonella typhimurium (ATCC 13311), organisms which can cause illnesses from mild to severe with potentially fatal outcomes. The crude ethyl acetate, ethanol, methanol, acetone and aqueous extracts were screened by agar-well diffusion method and the activities of the extract were further determined by Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC) assays. The inhibition zones ranged from 0 - 24 mm, while MIC and MBC of the extract ranged between 0.04 - 1.25 mg/mL and 0.081 - 2.5 mg/mL respectively. Chloroform/ Ethyl Acetate/ Formic acid (CEF) solvent system separated more active compounds followed by Ethyl Acetate/ Methanol/ Water (EMW) and Benzene/ Ethanol/ Ammonium Hydroxide (BEA). The extracts were fractionated by Thin Layer Chromatography (TLC). Bioautography was used to assess the activity of the possible classes of compounds present in the more active extracts. Column chromatography was used to purify the active compounds from the mixture while Gas Chromatography-Mass Spectrometry (GC-MS) was used to identify the phyto components of the fractions. The MIC of the fractions ranged between 0.0006 - 2.5 mg/mL. CEF 3 (F3), CEF 11 (F11) and CEF 12 (F12) revealed the presence of high levels fatty acids Linoleic acid, 1, 2-Benzenedicarboxylic acid and 2, 3-Dihydro-3, 5-dihydroxy-6-methyl, respectively. The results obtained from this study justify the use of this plant in traditional medicine and provide leads which could be further exploited for the development of new and potent antimicrobials.
- Full Text:
Exploring the influence of mindfulness-based stress reduction (MBSR) programmes on participants experience of time, particularly the present (here and now): a case study of Eastern Cape participants
- Authors: Schofield, Lorna
- Date: 2012
- Subjects: Acceptance and commitment therapy , Stress management , Depression, Mental -- Treatment
- Language: English
- Type: Thesis , Masters , M Soc Sc (C Psy)
- Identifier: vital:11611 , http://hdl.handle.net/10353/d1005640
- Description: This study aims to explore the extent to which participating in a Mindfulness-Based Stress Reduction (MBSR) programme may result in shifts in people’s relationship with time, notably whether they become more present-focussed. The eight week MBSR programme advocates mindfulness, which is defined as paying attention on purpose in the present moment without judgement, as a way of reducing stress. The programme has been available in East London since 2009. A case study of eight MBSR programme participants’ experiences using narrative analysis was conducted. Narrative psychology and social constructionism provided the theoretical basis in which our storied lives are located in culturally inscribed narratives, with specific discourses around time and stress. Time discourses tend to pressurise people to believe that it is better to go about daily life at a fast pace, which requires significant hurrying and rushing with pervasive senses of time urgency. Stress discourse locates stress management within individuals. One-on-one semi structured interviews were held so that participants could reflect on their experience of time and the present moment orientation of the programme. Participants’ perceived a shift in how they experienced time with greater awareness of being present-focussed and they identified stress reduction benefits, which included feeling calmer, less panicked and more self-accepting. However, some of the participants maintaining the formal mindfulness practices like the body scan, meditation and mindful movement after the programme often proved difficult, as they were drawn back into their dominant narratives around time which were characterised by busyness, productivity and time scarcity.
- Full Text:
- Authors: Schofield, Lorna
- Date: 2012
- Subjects: Acceptance and commitment therapy , Stress management , Depression, Mental -- Treatment
- Language: English
- Type: Thesis , Masters , M Soc Sc (C Psy)
- Identifier: vital:11611 , http://hdl.handle.net/10353/d1005640
- Description: This study aims to explore the extent to which participating in a Mindfulness-Based Stress Reduction (MBSR) programme may result in shifts in people’s relationship with time, notably whether they become more present-focussed. The eight week MBSR programme advocates mindfulness, which is defined as paying attention on purpose in the present moment without judgement, as a way of reducing stress. The programme has been available in East London since 2009. A case study of eight MBSR programme participants’ experiences using narrative analysis was conducted. Narrative psychology and social constructionism provided the theoretical basis in which our storied lives are located in culturally inscribed narratives, with specific discourses around time and stress. Time discourses tend to pressurise people to believe that it is better to go about daily life at a fast pace, which requires significant hurrying and rushing with pervasive senses of time urgency. Stress discourse locates stress management within individuals. One-on-one semi structured interviews were held so that participants could reflect on their experience of time and the present moment orientation of the programme. Participants’ perceived a shift in how they experienced time with greater awareness of being present-focussed and they identified stress reduction benefits, which included feeling calmer, less panicked and more self-accepting. However, some of the participants maintaining the formal mindfulness practices like the body scan, meditation and mindful movement after the programme often proved difficult, as they were drawn back into their dominant narratives around time which were characterised by busyness, productivity and time scarcity.
- Full Text:
Evaluating the efficacy of anti-corruption measures in the procurement system: a case study of Marondera municipality in Mashonaland, east of Zimbabwe
- Authors: Sabilika, Maxwell Seagent
- Date: 2012
- Subjects: Civil service -- Zimbabwe , Government purchasing -- Zimbabwe , Municipal officials and employees -- Zimbabwe , Municipal government -- Zimbabwe , Political corruption -- Zimbabwe
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:11679 , http://hdl.handle.net/10353/d1007620 , Civil service -- Zimbabwe , Government purchasing -- Zimbabwe , Municipal officials and employees -- Zimbabwe , Municipal government -- Zimbabwe , Political corruption -- Zimbabwe
- Description: Anti-corruption measures are put forward as a panacea to effective procurement system, among other things, which ultimately improve service delivery. Corruption has demonstrated remarkable durability and flexibility to survive in all socio-economic systems with the conception of a corruption-free economy in reality, is hardly possible. Given this background, this study sought to evaluate the efficacy of the already implemented anti-corruption measures in the procurememt procecesses of Marondera municipality. To understand their effectiveness, relevant literature was reviewed. Different scholars point against the ineffectiveness of these measures, with Corruption Perception Index (CPI) from previous research showing devastating results in Zimbabwean local institutions. A further discussion of corruption cenception, different anti-corruption measures and legal frameworks gave a greater understanding of the area under study. In this study, a sample of 80 respondents was identified and data collected from them using both snow ball and purposive sampling methods. Thirty-five of them were females respondents and forty-five were male respondents from Marondera municipal community, with different demographic characteristics which was used for comparison of responses. Questionnaires and interviews were used as research instruments. Both the Quantitative and Qualitative research methods were used in the anaylsis of the data, to increase validity and reliability of the feelings.
- Full Text:
- Authors: Sabilika, Maxwell Seagent
- Date: 2012
- Subjects: Civil service -- Zimbabwe , Government purchasing -- Zimbabwe , Municipal officials and employees -- Zimbabwe , Municipal government -- Zimbabwe , Political corruption -- Zimbabwe
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:11679 , http://hdl.handle.net/10353/d1007620 , Civil service -- Zimbabwe , Government purchasing -- Zimbabwe , Municipal officials and employees -- Zimbabwe , Municipal government -- Zimbabwe , Political corruption -- Zimbabwe
- Description: Anti-corruption measures are put forward as a panacea to effective procurement system, among other things, which ultimately improve service delivery. Corruption has demonstrated remarkable durability and flexibility to survive in all socio-economic systems with the conception of a corruption-free economy in reality, is hardly possible. Given this background, this study sought to evaluate the efficacy of the already implemented anti-corruption measures in the procurememt procecesses of Marondera municipality. To understand their effectiveness, relevant literature was reviewed. Different scholars point against the ineffectiveness of these measures, with Corruption Perception Index (CPI) from previous research showing devastating results in Zimbabwean local institutions. A further discussion of corruption cenception, different anti-corruption measures and legal frameworks gave a greater understanding of the area under study. In this study, a sample of 80 respondents was identified and data collected from them using both snow ball and purposive sampling methods. Thirty-five of them were females respondents and forty-five were male respondents from Marondera municipal community, with different demographic characteristics which was used for comparison of responses. Questionnaires and interviews were used as research instruments. Both the Quantitative and Qualitative research methods were used in the anaylsis of the data, to increase validity and reliability of the feelings.
- Full Text:
Drug abuse in selected Grahamstown schools
- Authors: Rungani, Judith
- Date: 2012
- Subjects: High school students -- Substance use -- South Africa -- Eastern Cape , School management and organization , Teenagers -- Drug abuse , Substance abuse -- Youth -- Grahamstown (South Africa)
- Language: English
- Type: Thesis , Masters , M SW
- Identifier: vital:11759 , http://hdl.handle.net/10353/d1004784 , High school students -- Substance use -- South Africa -- Eastern Cape , School management and organization , Teenagers -- Drug abuse , Substance abuse -- Youth -- Grahamstown (South Africa)
- Description: The study explores drug abuse by learners in selected Grahamstown high schools. The study`s main concern is that drug abuse by learners is on the rise but yet there is less research on the drugs which are being used and the factors which motivate the learners to use such drugs. There are several drug abuse prevention strategies which are being implemented but yet they seem not to be very effective. It is in this frame of reference that this study saw it vital to focus on drug abuse by high school learners in Grahamstown. The study aims to identify the most commonly abused drugs by learners in the high schools of Grahamstown and the reasons why they use these drugs. The study made use of the mixed method research that is making use of both qualitative and quantitative research. The questionnaire was the instrument of data collection in quantitative data and interviews for the qualitative data. The packages which were used for the analysis of data include the Statistical Analysis System (SAS) V8 which was used to provide descriptive analysis and correlations. The findings of the study establish that the commonly abused drugs by learners are: alcohol with 58%, followed by cigarettes 22%, hookah-pipe 9%, dagga 7%. The main reasons why learners use drugs are: peer pressure, role models, availability, environment, and curiosity. Differences in drug use between male and female learners were noted. Twenty-five percent of the male learners and 16% of the female learners reported to be using drugs. In the view of these results, the researcher recommends that a comprehensive drug abuse prevention framework be formulated which focuses on preventing drug abuse at individual, family and community levels.
- Full Text:
- Authors: Rungani, Judith
- Date: 2012
- Subjects: High school students -- Substance use -- South Africa -- Eastern Cape , School management and organization , Teenagers -- Drug abuse , Substance abuse -- Youth -- Grahamstown (South Africa)
- Language: English
- Type: Thesis , Masters , M SW
- Identifier: vital:11759 , http://hdl.handle.net/10353/d1004784 , High school students -- Substance use -- South Africa -- Eastern Cape , School management and organization , Teenagers -- Drug abuse , Substance abuse -- Youth -- Grahamstown (South Africa)
- Description: The study explores drug abuse by learners in selected Grahamstown high schools. The study`s main concern is that drug abuse by learners is on the rise but yet there is less research on the drugs which are being used and the factors which motivate the learners to use such drugs. There are several drug abuse prevention strategies which are being implemented but yet they seem not to be very effective. It is in this frame of reference that this study saw it vital to focus on drug abuse by high school learners in Grahamstown. The study aims to identify the most commonly abused drugs by learners in the high schools of Grahamstown and the reasons why they use these drugs. The study made use of the mixed method research that is making use of both qualitative and quantitative research. The questionnaire was the instrument of data collection in quantitative data and interviews for the qualitative data. The packages which were used for the analysis of data include the Statistical Analysis System (SAS) V8 which was used to provide descriptive analysis and correlations. The findings of the study establish that the commonly abused drugs by learners are: alcohol with 58%, followed by cigarettes 22%, hookah-pipe 9%, dagga 7%. The main reasons why learners use drugs are: peer pressure, role models, availability, environment, and curiosity. Differences in drug use between male and female learners were noted. Twenty-five percent of the male learners and 16% of the female learners reported to be using drugs. In the view of these results, the researcher recommends that a comprehensive drug abuse prevention framework be formulated which focuses on preventing drug abuse at individual, family and community levels.
- Full Text:
Lithostratigraphic correlation, mineralogy and geochemistry of the lower manganese orebody at the Kalagadi Manganese Mine in the Northern Cape Province of South Africa
- Authors: Rasmeni, Sonwabile
- Date: 2012
- Subjects: Manganese mines and mining -- South Africa , Manganese ores -- Geology -- South Africa , Mineralogy -- South Africa , Geochemistry -- South Africa
- Language: English
- Type: Thesis , Masters , MSc (Geology)
- Identifier: vital:11526 , http://hdl.handle.net/10353/d1016155 , Manganese mines and mining -- South Africa , Manganese ores -- Geology -- South Africa , Mineralogy -- South Africa , Geochemistry -- South Africa
- Description: The Kalagadi Manganese mine in the Kuruman area of the Northern Cape Province of South Africa contains reserves of Mn ore in excess of 100Mt. Mineralization in the mine lease area is restricted within the Hotazel Formation of the Voȅlwater Subgroup, belonging to the Postmasburg Group, the upper subdivision of the Transvaal Supergroup. Surface topography is characterized by flat lying, undulation with minimal faulting and the ore are slightly metarmophosed. This study investigates the general geology of the mine, lithostratigraphic subdivision and correlation of the economic Lower Manganese Orebody (LMO) of the Kalagadi Manganese Mine in order to guide mining plan and operations once the mine is fully commissioned. At the commencement of this study, Kalagadi Manganese mine was a project under exploration with no specific geology of the mine lease area and no lithostratigraphic subdivision. The study also aimed determining the extent of lithostratigraphic correlation between the LMO economic orebodies of the Kalagadi Manganese mine with that of underground Gloria and open-pit Mamatwan mines. Four methods including petrographic microscope, Scanning electron Microscope (SEM), X-ray diffraction (XRD) and X-ray fluorescence (XRF) analyses were applied mainly for the mineral identification, chemical composition and ore characterization of the Lower Manganese Orebody (LMO) at Kalagadi Manganese mine. The results of this study indicates the following: (1) Eleven textural distinct zones with economic zones restricted to the middle while the lower grade zones are confined to the top and bottom of the LMO; (2) The economic zones, comprising of Y, M, C and N subzones attain an average thickness of 10 m and are graded at an average of 40% Mn while the Mn/Fe ratio varies from 6 to 9; (3) The most economic zones are M and N subzones which are mostly characterized by oxidized ovoids and laminae, a characteristic applicable even to other zones of economic interest; (4) Braunite is the main mineral of the manganese ore and is often integrown with kutnahorite and other minerals (hematite, hausmannite, Mg-calcite, calcite, jacobsite, serpentine and garnet) which are present in variable amounts; (5) The Mg-rich calcite (Ca, Mg)CO3 is the second dominant manganese carbonate mineral and it corresponds to elevated MgO concentration and is often associated with marine environment. The occurrence of the Mgcalcite is not common in the manganese ore of this area except for the Mn-calcite, which was not determined by XRD analyses in this study; (6) MnO is the most abundant major oxide in the manganese ore while other major oxides present in decreasing order of abundance are CaO, SiO2, Fe2O3, and MgO. The oxides TiO2, Na2O, K2O, Al2O3, and Cr2O3 are depleted and are mostly 0.01wt% and 0.001wt% respectively while P2O5 concentrations are low ranging from 0.02wt% to 0.3wt%. The trace element concentrations of Ba, Zn and Sr in most borehole samples are slightly elevated ranging from 100ppm to 3.9% (36000pm) while Co, Cu, Ni, Y, As, Zr, V and La rarely exceed 50ppm. The enrichments of Cu, Zn, Ni, Co and V that are commonly associated with volcanogenic hydrothermal input in chemicals may reach up to 70ppm; (7) The mineralogical and geochemical characteristics of the manganese ore in the Kalagadi Manganese mine lease area are similar to that of Low-Grade Mamatwan-Type ore. The cyclicity (Banded Iron Formation ↔ Hematite lutite ↔ braunite lutite) and alternation of manganese and iron formation have been confirmed; and (8) The oxygen δ18O isotope values (18‰ to 22‰) indicate a slight influence of metamorphism of the manganese ore. No positive correlation exists between δ13C vs δ18O values and Mn vs δ13C values. Such observations indicate minimal action of organic carbon during manganese precipitation where the organic matter was oxidized and manganese content reduced. On the other hand, the manganese carbonates (CaO) are positively correlated with carbon isotope, this indicates diagenetic alteration and the involvement of biogenic carbonate during the formation of manganese carbonates. It is concluded that the lithostratigraphic subdivision at Kalagadi Manganese mine is best correlated physically, mineralogically and geochemically with that of Gloria mine operating in the Low Grade Mamatwan - Type ore while correlation with an open-pit Mamatwan mine is also valid.
- Full Text:
- Authors: Rasmeni, Sonwabile
- Date: 2012
- Subjects: Manganese mines and mining -- South Africa , Manganese ores -- Geology -- South Africa , Mineralogy -- South Africa , Geochemistry -- South Africa
- Language: English
- Type: Thesis , Masters , MSc (Geology)
- Identifier: vital:11526 , http://hdl.handle.net/10353/d1016155 , Manganese mines and mining -- South Africa , Manganese ores -- Geology -- South Africa , Mineralogy -- South Africa , Geochemistry -- South Africa
- Description: The Kalagadi Manganese mine in the Kuruman area of the Northern Cape Province of South Africa contains reserves of Mn ore in excess of 100Mt. Mineralization in the mine lease area is restricted within the Hotazel Formation of the Voȅlwater Subgroup, belonging to the Postmasburg Group, the upper subdivision of the Transvaal Supergroup. Surface topography is characterized by flat lying, undulation with minimal faulting and the ore are slightly metarmophosed. This study investigates the general geology of the mine, lithostratigraphic subdivision and correlation of the economic Lower Manganese Orebody (LMO) of the Kalagadi Manganese Mine in order to guide mining plan and operations once the mine is fully commissioned. At the commencement of this study, Kalagadi Manganese mine was a project under exploration with no specific geology of the mine lease area and no lithostratigraphic subdivision. The study also aimed determining the extent of lithostratigraphic correlation between the LMO economic orebodies of the Kalagadi Manganese mine with that of underground Gloria and open-pit Mamatwan mines. Four methods including petrographic microscope, Scanning electron Microscope (SEM), X-ray diffraction (XRD) and X-ray fluorescence (XRF) analyses were applied mainly for the mineral identification, chemical composition and ore characterization of the Lower Manganese Orebody (LMO) at Kalagadi Manganese mine. The results of this study indicates the following: (1) Eleven textural distinct zones with economic zones restricted to the middle while the lower grade zones are confined to the top and bottom of the LMO; (2) The economic zones, comprising of Y, M, C and N subzones attain an average thickness of 10 m and are graded at an average of 40% Mn while the Mn/Fe ratio varies from 6 to 9; (3) The most economic zones are M and N subzones which are mostly characterized by oxidized ovoids and laminae, a characteristic applicable even to other zones of economic interest; (4) Braunite is the main mineral of the manganese ore and is often integrown with kutnahorite and other minerals (hematite, hausmannite, Mg-calcite, calcite, jacobsite, serpentine and garnet) which are present in variable amounts; (5) The Mg-rich calcite (Ca, Mg)CO3 is the second dominant manganese carbonate mineral and it corresponds to elevated MgO concentration and is often associated with marine environment. The occurrence of the Mgcalcite is not common in the manganese ore of this area except for the Mn-calcite, which was not determined by XRD analyses in this study; (6) MnO is the most abundant major oxide in the manganese ore while other major oxides present in decreasing order of abundance are CaO, SiO2, Fe2O3, and MgO. The oxides TiO2, Na2O, K2O, Al2O3, and Cr2O3 are depleted and are mostly 0.01wt% and 0.001wt% respectively while P2O5 concentrations are low ranging from 0.02wt% to 0.3wt%. The trace element concentrations of Ba, Zn and Sr in most borehole samples are slightly elevated ranging from 100ppm to 3.9% (36000pm) while Co, Cu, Ni, Y, As, Zr, V and La rarely exceed 50ppm. The enrichments of Cu, Zn, Ni, Co and V that are commonly associated with volcanogenic hydrothermal input in chemicals may reach up to 70ppm; (7) The mineralogical and geochemical characteristics of the manganese ore in the Kalagadi Manganese mine lease area are similar to that of Low-Grade Mamatwan-Type ore. The cyclicity (Banded Iron Formation ↔ Hematite lutite ↔ braunite lutite) and alternation of manganese and iron formation have been confirmed; and (8) The oxygen δ18O isotope values (18‰ to 22‰) indicate a slight influence of metamorphism of the manganese ore. No positive correlation exists between δ13C vs δ18O values and Mn vs δ13C values. Such observations indicate minimal action of organic carbon during manganese precipitation where the organic matter was oxidized and manganese content reduced. On the other hand, the manganese carbonates (CaO) are positively correlated with carbon isotope, this indicates diagenetic alteration and the involvement of biogenic carbonate during the formation of manganese carbonates. It is concluded that the lithostratigraphic subdivision at Kalagadi Manganese mine is best correlated physically, mineralogically and geochemically with that of Gloria mine operating in the Low Grade Mamatwan - Type ore while correlation with an open-pit Mamatwan mine is also valid.
- Full Text:
Perceptions of rural consumers and the quality of mutton at purchase points in the Eastern Cape Province, South Africa
- Authors: Rani, Zikhona Theodora
- Date: 2012
- Subjects: Meat -- Quality , Mutton -- Quality , Consumers' preferences , Quality of products , Consumers -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc Agric (Animal Science)
- Identifier: vital:11823 , http://hdl.handle.net/10353/d1007562 , Meat -- Quality , Mutton -- Quality , Consumers' preferences , Quality of products , Consumers -- South Africa -- Eastern Cape
- Description: The objective of the study was to determine perceptions of rural consumers on mutton quality, and the quality of mutton at purchase points in the Eastern Cape Province, South Africa. The study was conducted in five different municipalities (Buffalo City, Nkonkobe, Ngqushwa, Lukhanje and Amahlathi). A survey was conducted where a sample of 215 consumers were randomly selected and interviewed, either at point of purchase or as they left the shops. The survey was not limited to the shoppers only but also extended to households from the villages. Questions on some of the most important meat quality cues were compiled. The physico-chemical quality of mutton purchased from different shops was also determined. Forty different shops and butcheries selling mutton from all the selected municipalities were visited. Different parts of mutton samples were bought. Physico-chemical qualities of mutton such as colour (L* - lightness, b* - redness and a* - yellowness) and meat pH measurements were taken at points of purchase. Cooking loss and tenderness evaluations were later done at the Meat Science laboratory at the University of Fort Hare. The results indicated that price was one of the major factors affecting the purchasing decisions of consumers. Thirty four percent of the consumers preferred mutton as compared to other protein sources, even though they were not buying this type of meat because it was not affordable to them. Both male and female consumers suggested that more sheep farmers need to be established in order to reduce the levels of imported mutton into South Africa. They also highlighted that selection programmes that will result in efficient sheep production and reduced mutton prices need to be implemented. Meat at points of purchase was affected by season resulting in lower lightness (L*24.7±0.49) values in winter and higher (L* 32.2±0.49) in Spring. The class of shop did not have an effect on meat quality attributes. Trotter had high values of lightness (L*30.4±2.78a), redness (a*30.4±2.78a), yellowness (13.1±1.08a), pH (6.3±0.12a), tenderness (24.9±3.69b) and cooking loss (39.5±4.38ab). The number of days from when the meat was put on the shelves to the time when it was purchased for consumption (days to purchase) had a significant (P<0.05) negative correlation with the Warner Braztler Shear Force (WBSF)values and lightness of the meat. Significant negative (P < 0.05) correlations between pH and colour of the meat (L*, a* and b*) were also observed. It was concluded that rural consumers perceive the quality of mutton as the best and that the physico-chemical quality of meat purchased from different shops was different, largely based on the part of meat, meat storage conditions and not necessarily on the class of the shop.
- Full Text:
- Authors: Rani, Zikhona Theodora
- Date: 2012
- Subjects: Meat -- Quality , Mutton -- Quality , Consumers' preferences , Quality of products , Consumers -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc Agric (Animal Science)
- Identifier: vital:11823 , http://hdl.handle.net/10353/d1007562 , Meat -- Quality , Mutton -- Quality , Consumers' preferences , Quality of products , Consumers -- South Africa -- Eastern Cape
- Description: The objective of the study was to determine perceptions of rural consumers on mutton quality, and the quality of mutton at purchase points in the Eastern Cape Province, South Africa. The study was conducted in five different municipalities (Buffalo City, Nkonkobe, Ngqushwa, Lukhanje and Amahlathi). A survey was conducted where a sample of 215 consumers were randomly selected and interviewed, either at point of purchase or as they left the shops. The survey was not limited to the shoppers only but also extended to households from the villages. Questions on some of the most important meat quality cues were compiled. The physico-chemical quality of mutton purchased from different shops was also determined. Forty different shops and butcheries selling mutton from all the selected municipalities were visited. Different parts of mutton samples were bought. Physico-chemical qualities of mutton such as colour (L* - lightness, b* - redness and a* - yellowness) and meat pH measurements were taken at points of purchase. Cooking loss and tenderness evaluations were later done at the Meat Science laboratory at the University of Fort Hare. The results indicated that price was one of the major factors affecting the purchasing decisions of consumers. Thirty four percent of the consumers preferred mutton as compared to other protein sources, even though they were not buying this type of meat because it was not affordable to them. Both male and female consumers suggested that more sheep farmers need to be established in order to reduce the levels of imported mutton into South Africa. They also highlighted that selection programmes that will result in efficient sheep production and reduced mutton prices need to be implemented. Meat at points of purchase was affected by season resulting in lower lightness (L*24.7±0.49) values in winter and higher (L* 32.2±0.49) in Spring. The class of shop did not have an effect on meat quality attributes. Trotter had high values of lightness (L*30.4±2.78a), redness (a*30.4±2.78a), yellowness (13.1±1.08a), pH (6.3±0.12a), tenderness (24.9±3.69b) and cooking loss (39.5±4.38ab). The number of days from when the meat was put on the shelves to the time when it was purchased for consumption (days to purchase) had a significant (P<0.05) negative correlation with the Warner Braztler Shear Force (WBSF)values and lightness of the meat. Significant negative (P < 0.05) correlations between pH and colour of the meat (L*, a* and b*) were also observed. It was concluded that rural consumers perceive the quality of mutton as the best and that the physico-chemical quality of meat purchased from different shops was different, largely based on the part of meat, meat storage conditions and not necessarily on the class of the shop.
- Full Text:
Impact of animal traction power on agricultural productivity: case of lowlands of Mohale's Hoek district of Lesotho
- Rampokanyo, Lepolesa Michael
- Authors: Rampokanyo, Lepolesa Michael
- Date: 2012
- Subjects: Animal traction -- Lesotho , Agricultural productivity -- Lesotho , Draft animals -- Lesotho , Food security -- Lesotho , Farm produce -- Lesotho
- Language: English
- Type: Thesis , Masters , MSc Agric (Agricultural Economics)
- Identifier: vital:11178 , http://hdl.handle.net/10353/483 , Animal traction -- Lesotho , Agricultural productivity -- Lesotho , Draft animals -- Lesotho , Food security -- Lesotho , Farm produce -- Lesotho
- Description: Most farming at subsistence level is located in rural areas where the majority of smallholder farmers have low productivity which results in high rate of food insecurity. The areas are characterised by animal traction and poor farming practises, and monoculture is mostly preferred. In light of this, this study analyzed the impact of animal power on agricultural productivity. Smallholder farmers in the lowlands of Mohale’s Hoek district of Lesotho were investigated by means of a case study methodology. The aim of the study was to inform agricultural policy about the level and key determinants of inefficiency in the smallholder farming system so as to contribute to policy designed to raise productivity of smallholder farmers. The sampling frame comprised farmers and extension workers in the lowlands of Mohale’s Hoek district. From this frame, 118 farmers and 4 extension workers were randomly selected from four villages, namely‘Mapotsane, Potsane, Tsoloane and Siloe. The four groups of farmers include; the farmers owning and using cattle for ploughing, farmers owning tractor and cattle and using them for ploughing, farmers owning tractor only and using it for ploughing, and farmers who owned neither cattle nor tractor and normally hire these when ploughing operations are to be done on the farm. The interviews of these farmers and extension workers were conducted by means of semi-structured questionnaire which consisted of both open and close ended questions. The study used the stochastic frontier production model for the production efficiencies and linear regression model for the impact of animal traction on agricultural productivity. Both procedures provided insights into the relative contributions of animal power and traditional systems to poverty alleviation and food security in the project areas. Descriptive statistics were employed for farming systems and challenges facing small scale farmers. Gross Margins analysis was conducted for the animal power and tractor power yield levels for maize crop to compare the two types of power. Some diagnostic tests to detect serial correlation and heteroskedasticity and t-tests were also performed. The significant variables include the area of sorghum ploughed, members of the household that assist with family labour, education, quantity of fertilizer applied, time taken by the farmers in farming, members who are formally employed, household size, area of land ploughed, old age, costs of tractor and animal, marital status, income, area of maize ploughed, area of sorghum ploughed, quantity of fertilizers applied, costs of seeds and fertilizers applied, maize and sorghum yield and amount sold and consumed. The study revealed that monoculture is mainly practised and many smallholder farmers used traditional technologies that fail to replace nutrients in the soil. Nonetheless family labour was not a problem. During the farming season, tractors were used as the main source of power for ploughing. Most farmers hired these for maize production as it is a staple food crop even where animal power is available. It was noted that the tractors were few and in most cases old and malfunctioning. The cost of using animals in farming obviouslyplayed a role in the production of both maize v and sorghum in the lowland areas of Mohale’s Hoek district. Smallholder farmers who owned both tractors and animals produced more but they were mainly affected by high costs of maintaining the aging tractors, generally purchased on the used-equipment market. The increased challenges resulted in lower productivity of the smallholder farmers, including: unhealthy animals, drought, marketing problems, late ploughing, poor soils, lack of extension services, low yields, low income, lack of information, lack of appropriate implements, lack of support services, nutrition inadequacy, inappropriate farming systems. The study recommended the adoption and promotion of low-cost mechanization in the lowlands of Mohale’s Hoek district so as to increase the production of the smallholder farmers. Increased productivity will in turn improve household food security.
- Full Text:
- Authors: Rampokanyo, Lepolesa Michael
- Date: 2012
- Subjects: Animal traction -- Lesotho , Agricultural productivity -- Lesotho , Draft animals -- Lesotho , Food security -- Lesotho , Farm produce -- Lesotho
- Language: English
- Type: Thesis , Masters , MSc Agric (Agricultural Economics)
- Identifier: vital:11178 , http://hdl.handle.net/10353/483 , Animal traction -- Lesotho , Agricultural productivity -- Lesotho , Draft animals -- Lesotho , Food security -- Lesotho , Farm produce -- Lesotho
- Description: Most farming at subsistence level is located in rural areas where the majority of smallholder farmers have low productivity which results in high rate of food insecurity. The areas are characterised by animal traction and poor farming practises, and monoculture is mostly preferred. In light of this, this study analyzed the impact of animal power on agricultural productivity. Smallholder farmers in the lowlands of Mohale’s Hoek district of Lesotho were investigated by means of a case study methodology. The aim of the study was to inform agricultural policy about the level and key determinants of inefficiency in the smallholder farming system so as to contribute to policy designed to raise productivity of smallholder farmers. The sampling frame comprised farmers and extension workers in the lowlands of Mohale’s Hoek district. From this frame, 118 farmers and 4 extension workers were randomly selected from four villages, namely‘Mapotsane, Potsane, Tsoloane and Siloe. The four groups of farmers include; the farmers owning and using cattle for ploughing, farmers owning tractor and cattle and using them for ploughing, farmers owning tractor only and using it for ploughing, and farmers who owned neither cattle nor tractor and normally hire these when ploughing operations are to be done on the farm. The interviews of these farmers and extension workers were conducted by means of semi-structured questionnaire which consisted of both open and close ended questions. The study used the stochastic frontier production model for the production efficiencies and linear regression model for the impact of animal traction on agricultural productivity. Both procedures provided insights into the relative contributions of animal power and traditional systems to poverty alleviation and food security in the project areas. Descriptive statistics were employed for farming systems and challenges facing small scale farmers. Gross Margins analysis was conducted for the animal power and tractor power yield levels for maize crop to compare the two types of power. Some diagnostic tests to detect serial correlation and heteroskedasticity and t-tests were also performed. The significant variables include the area of sorghum ploughed, members of the household that assist with family labour, education, quantity of fertilizer applied, time taken by the farmers in farming, members who are formally employed, household size, area of land ploughed, old age, costs of tractor and animal, marital status, income, area of maize ploughed, area of sorghum ploughed, quantity of fertilizers applied, costs of seeds and fertilizers applied, maize and sorghum yield and amount sold and consumed. The study revealed that monoculture is mainly practised and many smallholder farmers used traditional technologies that fail to replace nutrients in the soil. Nonetheless family labour was not a problem. During the farming season, tractors were used as the main source of power for ploughing. Most farmers hired these for maize production as it is a staple food crop even where animal power is available. It was noted that the tractors were few and in most cases old and malfunctioning. The cost of using animals in farming obviouslyplayed a role in the production of both maize v and sorghum in the lowland areas of Mohale’s Hoek district. Smallholder farmers who owned both tractors and animals produced more but they were mainly affected by high costs of maintaining the aging tractors, generally purchased on the used-equipment market. The increased challenges resulted in lower productivity of the smallholder farmers, including: unhealthy animals, drought, marketing problems, late ploughing, poor soils, lack of extension services, low yields, low income, lack of information, lack of appropriate implements, lack of support services, nutrition inadequacy, inappropriate farming systems. The study recommended the adoption and promotion of low-cost mechanization in the lowlands of Mohale’s Hoek district so as to increase the production of the smallholder farmers. Increased productivity will in turn improve household food security.
- Full Text:
Parent characterization of quality protein maize (Zea mays L.) and combining ability for tolerance to drought stress
- Authors: Pfunde, Cleopatra Nyaradzo
- Date: 2012
- Subjects: Corn -- Quality , Corn as food , Corn -- Effect of stress on , Corn -- Effect of drought on , Cluster analysis , Crops -- Effect of drought on , Corn -- Drought tolerance , Corn -- Breeding , Crops -- Drought tolerance
- Language: English
- Type: Thesis , Masters , MSc Agric (Crop Science)
- Identifier: vital:11869 , http://hdl.handle.net/10353/d1007536 , Corn -- Quality , Corn as food , Corn -- Effect of stress on , Corn -- Effect of drought on , Cluster analysis , Crops -- Effect of drought on , Corn -- Drought tolerance , Corn -- Breeding , Crops -- Drought tolerance
- Description: Quality protein maize (QPM) has enhanced levels of two essential amino acids, lysine and tryptophan compared to normal maize. This makes QPM an important cereal crop in communities where maize is a staple crop. The main abiotic factor to QPM production is drought stress. Little information is available on the effect of drought stress on QPM. Therefore, the objectives of this study were to: (i) conduct diversity analysis of QPM inbred lines using morpho-agronomic and simple sequence repeat markers, (ii) screen available QPM inbred lines and F1 progeny for tolerance to seedling drought stress, (iii) determine the combining ability and type of gene action of QPM inbred lines for tolerance to seedling drought stress, grain yield and endosperm modification. The study was conducted in South Africa, at the University of Fort Hare. Morphological characterisation of 21 inbred lines was done using quantitative and qualitative traits. A randomised complete block design with three replicates was used for characterizing the inbred lines in the field. Genstat statistical software, version 12 (Genstat ®, 2009) was used for analysis of variance (ANOVA) and descriptive statistics. Analysis of variance was performed on all quantitative data for morphological traits. Data for qualitative traits was tabulated in their nominal classes. Traits that contributed most to the variation were days to anthesis, days to silking, anthesis-silking interval, plant height, number of kernel rows, ear length and grain yield. Cluster analysis grouped the inbred lines into three main clusters. The first cluster was characterised by tall and average yielding lines, while the second cluster showed the least anthesis-silking interval, and had the highest yield. Cluster three consisted of lines that were early maturing, but were the least yielding. Genetic distances between maize inbred lines were quantified by using 27 simple sequence repeat markers. The genetic distances between genotypes was computed using Roger’s (1972) genetic distances. Cluster analysis was then carried out using the neighbour-joining tree method using Power Marker software version 3.25. A dendrogram generated from the genetic study of the inbred lines revealed three groups that concurred with expectations based upon pedigree data. These groups were not identical to the groups generated using morpho-agronomic characterisation. Twenty one QPM inbred lines were crossed using a North Carolina design II mating scheme. These were divided into seven sets, each with three inbred lines. The three inbred lines in one set were used as females and crossed with three inbred lines in another set consisting of males. Each inbred line was used as a female in one set, and as a male in a second set. Sixty three hybrids (7 sets x 9 hybrids) were formed and evaluated in October 2011, using a 6x8 alpha-lattice incomplete block design with three replicates under glasshouse and optimum field conditions. A randomised complete block design with three replicates was used for the 21 parental inbred lines. Traits recorded for the glasshouse study were, canopy temperature, chlorophyll content, leaf roll, stem diameter, plant height, leaf number, leaf area, fresh and dry root and shoot weights. Data for the various traits for each environment, 25 percent (stress treatment) and 75 percent (non-stress) of field capacity, were subjected to analysis of variance using the unbalanced treatment design in Genstat statistical package Edition 12. Where varietal differences were found, means were separated using Tukey’s test. Genetic analyses for grain yield and agronomic traits were performed using a fixed effects model in JMP 10 following Residual Maximum Likelihood procedure (REML). From the results, inbred lines that were not previously classified into heterotic groups and drought tolerance categories were classified based on their total dry weight performance and drought susceptibility index. Inbred lines L18, L9, L8, L6 and L3, in order of their drought tolerance index were the best performers under greenhouse conditions and could be recommended for breeding new varieties that are tolerant to seedling drought stress. Evaluation of maize seedlings tolerant to drought stress under glasshouse conditions revealed that cross combination L18 x L11 was drought tolerant, while cross L20 x L7 was susceptible. Total dry weight was used as the major criteria for classifying F1 maize seedlings as being resistant or susceptible. General combining ability effects accounted for 67.43 percent of the genetic variation for total dry weight, while specific combining ability effects contributed 37.57 percent. This indicated that additive gene effects were more important than non-additive gene action in controlling this trait. In the field study (non-drought), the experimental design was a 6x8 alpha lattice incomplete block design with three replicates. On an adjacent field a randomised complete block design with three replicates was used to evaluate the parental inbred lines. The following variables were recorded: plant height, ear height, ears per plant, endosperm modification, days to silking and days to anthesis, anthesis-silking interval, number of kernels per row, number of rows per ear and grain yield. General analyses for the incomplete lattice block design and randomised complete block design for hybrid and inbred data respectively were performed using JMP 10 statistical software. Means were separated using the Tukey's test. Genetic analyses of data for grain yield and agronomic traits were conducted using a fixed effects model using REML in JMP 10. The importance of both GCA (51 percent) and SCA (49 percent) was observed for grain yield. A preponderance of GCA existed for ear height, days to anthesis, anthesis-silking interval, ears per plant and number of kernels per row, indicating that predominantly, additive gene effects controlled hybrid performance under optimum field conditions. The highest heritability was observed for days to silking (48.27 percent) suggesting that yield could be improved through selection for this trait. Under field conditions, variation in time to maturity was observed. This implies that these inbred lines can be recommended for utilisation in different agro-ecologies. Early maturing lines such as L18 can be used to introduce earliness in local cultivars, while early maturing single crosses such as L18 x L2, L5 x L9, L3 x L4 and L2 x L21 could be recommended for maize growers in drought prone areas such as the former Ciskei. Single crosses L18xL11, L16xL18, L8xL21 and L9xL6 had good tolerance to seedling drought stress. On the other hand, single crosses L18xL11 and L11xL13 had high grain yield and good endosperm modification. All these single crosses could be recommended for commercial production after evaluation across locations in the Eastern Cape Province. Alternatively they can be crossed with other superior inbreds to generate three or four way hybrids, which could then be evaluated for potential use by farmers in the Eastern Cape.
- Full Text:
- Authors: Pfunde, Cleopatra Nyaradzo
- Date: 2012
- Subjects: Corn -- Quality , Corn as food , Corn -- Effect of stress on , Corn -- Effect of drought on , Cluster analysis , Crops -- Effect of drought on , Corn -- Drought tolerance , Corn -- Breeding , Crops -- Drought tolerance
- Language: English
- Type: Thesis , Masters , MSc Agric (Crop Science)
- Identifier: vital:11869 , http://hdl.handle.net/10353/d1007536 , Corn -- Quality , Corn as food , Corn -- Effect of stress on , Corn -- Effect of drought on , Cluster analysis , Crops -- Effect of drought on , Corn -- Drought tolerance , Corn -- Breeding , Crops -- Drought tolerance
- Description: Quality protein maize (QPM) has enhanced levels of two essential amino acids, lysine and tryptophan compared to normal maize. This makes QPM an important cereal crop in communities where maize is a staple crop. The main abiotic factor to QPM production is drought stress. Little information is available on the effect of drought stress on QPM. Therefore, the objectives of this study were to: (i) conduct diversity analysis of QPM inbred lines using morpho-agronomic and simple sequence repeat markers, (ii) screen available QPM inbred lines and F1 progeny for tolerance to seedling drought stress, (iii) determine the combining ability and type of gene action of QPM inbred lines for tolerance to seedling drought stress, grain yield and endosperm modification. The study was conducted in South Africa, at the University of Fort Hare. Morphological characterisation of 21 inbred lines was done using quantitative and qualitative traits. A randomised complete block design with three replicates was used for characterizing the inbred lines in the field. Genstat statistical software, version 12 (Genstat ®, 2009) was used for analysis of variance (ANOVA) and descriptive statistics. Analysis of variance was performed on all quantitative data for morphological traits. Data for qualitative traits was tabulated in their nominal classes. Traits that contributed most to the variation were days to anthesis, days to silking, anthesis-silking interval, plant height, number of kernel rows, ear length and grain yield. Cluster analysis grouped the inbred lines into three main clusters. The first cluster was characterised by tall and average yielding lines, while the second cluster showed the least anthesis-silking interval, and had the highest yield. Cluster three consisted of lines that were early maturing, but were the least yielding. Genetic distances between maize inbred lines were quantified by using 27 simple sequence repeat markers. The genetic distances between genotypes was computed using Roger’s (1972) genetic distances. Cluster analysis was then carried out using the neighbour-joining tree method using Power Marker software version 3.25. A dendrogram generated from the genetic study of the inbred lines revealed three groups that concurred with expectations based upon pedigree data. These groups were not identical to the groups generated using morpho-agronomic characterisation. Twenty one QPM inbred lines were crossed using a North Carolina design II mating scheme. These were divided into seven sets, each with three inbred lines. The three inbred lines in one set were used as females and crossed with three inbred lines in another set consisting of males. Each inbred line was used as a female in one set, and as a male in a second set. Sixty three hybrids (7 sets x 9 hybrids) were formed and evaluated in October 2011, using a 6x8 alpha-lattice incomplete block design with three replicates under glasshouse and optimum field conditions. A randomised complete block design with three replicates was used for the 21 parental inbred lines. Traits recorded for the glasshouse study were, canopy temperature, chlorophyll content, leaf roll, stem diameter, plant height, leaf number, leaf area, fresh and dry root and shoot weights. Data for the various traits for each environment, 25 percent (stress treatment) and 75 percent (non-stress) of field capacity, were subjected to analysis of variance using the unbalanced treatment design in Genstat statistical package Edition 12. Where varietal differences were found, means were separated using Tukey’s test. Genetic analyses for grain yield and agronomic traits were performed using a fixed effects model in JMP 10 following Residual Maximum Likelihood procedure (REML). From the results, inbred lines that were not previously classified into heterotic groups and drought tolerance categories were classified based on their total dry weight performance and drought susceptibility index. Inbred lines L18, L9, L8, L6 and L3, in order of their drought tolerance index were the best performers under greenhouse conditions and could be recommended for breeding new varieties that are tolerant to seedling drought stress. Evaluation of maize seedlings tolerant to drought stress under glasshouse conditions revealed that cross combination L18 x L11 was drought tolerant, while cross L20 x L7 was susceptible. Total dry weight was used as the major criteria for classifying F1 maize seedlings as being resistant or susceptible. General combining ability effects accounted for 67.43 percent of the genetic variation for total dry weight, while specific combining ability effects contributed 37.57 percent. This indicated that additive gene effects were more important than non-additive gene action in controlling this trait. In the field study (non-drought), the experimental design was a 6x8 alpha lattice incomplete block design with three replicates. On an adjacent field a randomised complete block design with three replicates was used to evaluate the parental inbred lines. The following variables were recorded: plant height, ear height, ears per plant, endosperm modification, days to silking and days to anthesis, anthesis-silking interval, number of kernels per row, number of rows per ear and grain yield. General analyses for the incomplete lattice block design and randomised complete block design for hybrid and inbred data respectively were performed using JMP 10 statistical software. Means were separated using the Tukey's test. Genetic analyses of data for grain yield and agronomic traits were conducted using a fixed effects model using REML in JMP 10. The importance of both GCA (51 percent) and SCA (49 percent) was observed for grain yield. A preponderance of GCA existed for ear height, days to anthesis, anthesis-silking interval, ears per plant and number of kernels per row, indicating that predominantly, additive gene effects controlled hybrid performance under optimum field conditions. The highest heritability was observed for days to silking (48.27 percent) suggesting that yield could be improved through selection for this trait. Under field conditions, variation in time to maturity was observed. This implies that these inbred lines can be recommended for utilisation in different agro-ecologies. Early maturing lines such as L18 can be used to introduce earliness in local cultivars, while early maturing single crosses such as L18 x L2, L5 x L9, L3 x L4 and L2 x L21 could be recommended for maize growers in drought prone areas such as the former Ciskei. Single crosses L18xL11, L16xL18, L8xL21 and L9xL6 had good tolerance to seedling drought stress. On the other hand, single crosses L18xL11 and L11xL13 had high grain yield and good endosperm modification. All these single crosses could be recommended for commercial production after evaluation across locations in the Eastern Cape Province. Alternatively they can be crossed with other superior inbreds to generate three or four way hybrids, which could then be evaluated for potential use by farmers in the Eastern Cape.
- Full Text:
Biochemical evaluation of Tulbaghia violacea harv.rhizomes in diet induced hypercholestrolemic rats
- Olorunnisola, Olubukola Sinbad
- Authors: Olorunnisola, Olubukola Sinbad
- Date: 2012
- Subjects: Violaceae , Anticoagulants (Medicine) , Antineoplastic agents , Rats , Hypercholesteremia , Cardiovascular agents , Medicinal plants
- Language: English
- Type: Thesis , Doctoral , PhD (Biochemistry)
- Identifier: vital:11273 , http://hdl.handle.net/10353/d1006900 , Violaceae , Anticoagulants (Medicine) , Antineoplastic agents , Rats , Hypercholesteremia , Cardiovascular agents , Medicinal plants
- Description: Discovery of cheap, nontoxic and readily available antiatherosclerotic drugs is an extraordinary challenge in this modern world. Atherosclerosis and cardiovascular diseases have been predicted to be the leading cause of death by the year 2030. Hence, this thesis was designed to search for plant (s) with anti-atherogenic properties, investigate its possible side effects and extrapolate its likely mechanism(s) of action. An ethnobotanical survey was employed in identification of locally important plants used for the management and treatment of cardiovascular diseases and its predisposing factors in Nkonkobe Municipality, Eastern Cape in South Africa. Information on the names of plants, their parts used and methods of preparation was collected through a questionnaire which was administered to herbalists, traditional healers and rural dwellers. The most frequently used plant (Rhizomes of Tulbaghia violacea Harv.) was investigated for toxicity using brine shrimp lethality (in vitro) and in vivo toxicity test (acute and subchronic) on rats to determine safety dosage. The in vitro antioxidant and free radical scavenging activity of the plant was investigated using models such as 1,1-diphenyl-2- picrylhydrazyl (DPPH), superoxide anions, hydrogen peroxide (H2O2), nitric oxide (NO), 2,2’- azinobis [3-ethylbenzothiazoline-6-sulfonic acid] diammonium salt (ABTS), lipid peroxidation inhibition and the ferric reducing agent. Phytochemical content and the effect of oral administration of fresh methanolic extract rhizomes of Tulbaghia violacea (250, 500 mg/kg. bwt/day) on Lipid peroxidation (TBARS), serum and tissue antioxidant enzymes in normal, hypercholesterolemic and diet induced atherogenic rats were also assessed. More so, the potential of the extract (250 and 500 mg/kg. bwt) to protect against atherogenic diet (4 percentage cholesterol 1 pecentage cholic acid and 0.5 percentage thiouracil) induced fatty streaks formation, dyslipidemia, oxidative stress and endothelial dysfunction was also investigated. Ethnobotanical study revealed that 19 plant species are used for the treatment of heart related diseases in the Municipality. 53 percentage of the plants mentioned were used for the management of chest pain, 47 percentage for high blood pressure, 42 percent for heart disease, 16 percentage for stroke and 11 percentage for the treatment of hypercholesterolemia. Tulbaghia violacea was repeatedly mentioned as the plant species used for the treatment of high blood pressure and predisposing factors in the study area. The brine shrimp cytotoxicity test revealed that fresh, dried methanolic extracts and essential oil of the T. violacea exhibited a high degree of cytotoxic activity with IC50 values of 18.18 (fresh) and 19.24 (dried) μg/ml. An IC50 value of 12. 59 μg/ml was obtained for the essential oil of the plant. The low cytotoxicity values obtained, suggested that rhizome of T. violacea may serve as a potential source of antimicrobial and anticancer agents. In vivo acute study of single oral administration of 5g/kg dose does not produce mortality or significant behavioral changes during 14 days observation. In the sub-chronic study, the extract (250, 500 mg/kg/bwt/ day) administered for a period of 28 days showed no mortality or morbidity. The weekly body and organ weight of the rats showed no significant differences between the control and the rats treated with the extract. The extract at all doses does not show any effect on of biomarkers of liver or renal damage. However, a significant decrease in the activity of ƔGT was observed in the extract treated groups. Hematological evaluation revealed that oral administration of fresh methanolic extracts of rhizomes of T. violacea does not cause anaemia or leucocytosis in the animals. Furthermore, histopathology results of the internal organs revealed no detectable inflammation. These results demonstrated that the rhizome extract of T. violacea was potentially safe for consumption orally even in chronic concentration. In vitro antioxidant evaluation showed that the essential oil, fresh and dried methanolic extracts exhibited potent antioxidant activities in a concentration dependent manner. Phytochemical investigation reveals that the fresh and the dry extract of RTV are rich in flavonoid, flavonol, phenols, tannin and proanthocyanidin, while the essential oil contained dimethy disulfide, dimethyl trisulfide, (methyl methylthio) methyl, 2,4-dithiapentane (11.35 percent) and (methylthio) acetic acid, 2- (methylthio) ethanol, 3-(methylthio) - and propanenitrile (7.20 percent). The fresh extract had higher radicals scavenging activity than the essential oil or dried extract, with 50 percentage inhibition of DPPH, hydrogen peroxide and lipid peroxidation at a concentration of 35.0 ± 0.12, 19.3 ± 0.11 and 17.9 ± 0.15 μg/ml respectively. Oral administration of methanolic extract of RTV in 125, 250 and 500 mg/kg to female Wistar rats significantly inhibited reduction of glutathione (GSH), superoxide dismutase (SOD) and catalase (CAT). The extracts also inhibited (p< 0.05) lipid peroxidation in normal, high cholesterol and diet induced atherosclerosis fed rats in a dose dependant manner. Also the extract (250 and 500 mg/kg/bwt/day) caused a significant (p<0.05) improvement in body weight of treated animals compared with untreated hypercholesterolemia control rats. The extracts also protected significantly (p<0.05) against atherogenic diet induced liver damage or fatty streaks formation in the aorta as revealed by histological examination. The anti-cholesterolemia and anti-atherosclerotic activities of the extract compared favorably well with standard drugs Gemfibrozil and Atorvastatin respectively. Conclusively, rhizomes of T. violacea possess significant anti-atherogenic activity and its mechanism of action(s) may be due to its antioxidant and anti-hypercholesterolemia properties. The results of this study also suggested that rhizome of T. violacea is relatively safe for human consumption and it may be used as an alternative to garlic.
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- Authors: Olorunnisola, Olubukola Sinbad
- Date: 2012
- Subjects: Violaceae , Anticoagulants (Medicine) , Antineoplastic agents , Rats , Hypercholesteremia , Cardiovascular agents , Medicinal plants
- Language: English
- Type: Thesis , Doctoral , PhD (Biochemistry)
- Identifier: vital:11273 , http://hdl.handle.net/10353/d1006900 , Violaceae , Anticoagulants (Medicine) , Antineoplastic agents , Rats , Hypercholesteremia , Cardiovascular agents , Medicinal plants
- Description: Discovery of cheap, nontoxic and readily available antiatherosclerotic drugs is an extraordinary challenge in this modern world. Atherosclerosis and cardiovascular diseases have been predicted to be the leading cause of death by the year 2030. Hence, this thesis was designed to search for plant (s) with anti-atherogenic properties, investigate its possible side effects and extrapolate its likely mechanism(s) of action. An ethnobotanical survey was employed in identification of locally important plants used for the management and treatment of cardiovascular diseases and its predisposing factors in Nkonkobe Municipality, Eastern Cape in South Africa. Information on the names of plants, their parts used and methods of preparation was collected through a questionnaire which was administered to herbalists, traditional healers and rural dwellers. The most frequently used plant (Rhizomes of Tulbaghia violacea Harv.) was investigated for toxicity using brine shrimp lethality (in vitro) and in vivo toxicity test (acute and subchronic) on rats to determine safety dosage. The in vitro antioxidant and free radical scavenging activity of the plant was investigated using models such as 1,1-diphenyl-2- picrylhydrazyl (DPPH), superoxide anions, hydrogen peroxide (H2O2), nitric oxide (NO), 2,2’- azinobis [3-ethylbenzothiazoline-6-sulfonic acid] diammonium salt (ABTS), lipid peroxidation inhibition and the ferric reducing agent. Phytochemical content and the effect of oral administration of fresh methanolic extract rhizomes of Tulbaghia violacea (250, 500 mg/kg. bwt/day) on Lipid peroxidation (TBARS), serum and tissue antioxidant enzymes in normal, hypercholesterolemic and diet induced atherogenic rats were also assessed. More so, the potential of the extract (250 and 500 mg/kg. bwt) to protect against atherogenic diet (4 percentage cholesterol 1 pecentage cholic acid and 0.5 percentage thiouracil) induced fatty streaks formation, dyslipidemia, oxidative stress and endothelial dysfunction was also investigated. Ethnobotanical study revealed that 19 plant species are used for the treatment of heart related diseases in the Municipality. 53 percentage of the plants mentioned were used for the management of chest pain, 47 percentage for high blood pressure, 42 percent for heart disease, 16 percentage for stroke and 11 percentage for the treatment of hypercholesterolemia. Tulbaghia violacea was repeatedly mentioned as the plant species used for the treatment of high blood pressure and predisposing factors in the study area. The brine shrimp cytotoxicity test revealed that fresh, dried methanolic extracts and essential oil of the T. violacea exhibited a high degree of cytotoxic activity with IC50 values of 18.18 (fresh) and 19.24 (dried) μg/ml. An IC50 value of 12. 59 μg/ml was obtained for the essential oil of the plant. The low cytotoxicity values obtained, suggested that rhizome of T. violacea may serve as a potential source of antimicrobial and anticancer agents. In vivo acute study of single oral administration of 5g/kg dose does not produce mortality or significant behavioral changes during 14 days observation. In the sub-chronic study, the extract (250, 500 mg/kg/bwt/ day) administered for a period of 28 days showed no mortality or morbidity. The weekly body and organ weight of the rats showed no significant differences between the control and the rats treated with the extract. The extract at all doses does not show any effect on of biomarkers of liver or renal damage. However, a significant decrease in the activity of ƔGT was observed in the extract treated groups. Hematological evaluation revealed that oral administration of fresh methanolic extracts of rhizomes of T. violacea does not cause anaemia or leucocytosis in the animals. Furthermore, histopathology results of the internal organs revealed no detectable inflammation. These results demonstrated that the rhizome extract of T. violacea was potentially safe for consumption orally even in chronic concentration. In vitro antioxidant evaluation showed that the essential oil, fresh and dried methanolic extracts exhibited potent antioxidant activities in a concentration dependent manner. Phytochemical investigation reveals that the fresh and the dry extract of RTV are rich in flavonoid, flavonol, phenols, tannin and proanthocyanidin, while the essential oil contained dimethy disulfide, dimethyl trisulfide, (methyl methylthio) methyl, 2,4-dithiapentane (11.35 percent) and (methylthio) acetic acid, 2- (methylthio) ethanol, 3-(methylthio) - and propanenitrile (7.20 percent). The fresh extract had higher radicals scavenging activity than the essential oil or dried extract, with 50 percentage inhibition of DPPH, hydrogen peroxide and lipid peroxidation at a concentration of 35.0 ± 0.12, 19.3 ± 0.11 and 17.9 ± 0.15 μg/ml respectively. Oral administration of methanolic extract of RTV in 125, 250 and 500 mg/kg to female Wistar rats significantly inhibited reduction of glutathione (GSH), superoxide dismutase (SOD) and catalase (CAT). The extracts also inhibited (p< 0.05) lipid peroxidation in normal, high cholesterol and diet induced atherosclerosis fed rats in a dose dependant manner. Also the extract (250 and 500 mg/kg/bwt/day) caused a significant (p<0.05) improvement in body weight of treated animals compared with untreated hypercholesterolemia control rats. The extracts also protected significantly (p<0.05) against atherogenic diet induced liver damage or fatty streaks formation in the aorta as revealed by histological examination. The anti-cholesterolemia and anti-atherosclerotic activities of the extract compared favorably well with standard drugs Gemfibrozil and Atorvastatin respectively. Conclusively, rhizomes of T. violacea possess significant anti-atherogenic activity and its mechanism of action(s) may be due to its antioxidant and anti-hypercholesterolemia properties. The results of this study also suggested that rhizome of T. violacea is relatively safe for human consumption and it may be used as an alternative to garlic.
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A cross-sectional study to ascertain the prognostic factors and symptoms associated with cryptococcal meningitis cases treated at the East London Hospital complex
- Authors: Okorie, Ikechukwu Obinna
- Date: 2012
- Subjects: Meningitis -- South Africa -- Eastern Cape , Tuberculosis -- South Africa -- Eastern Cape , Public health -- South Africa -- Eastern Cape , Hospitals -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc (Biostatistics and Epidemiology)
- Identifier: vital:11782 , http://hdl.handle.net/10353/d1016194 , Meningitis -- South Africa -- Eastern Cape , Tuberculosis -- South Africa -- Eastern Cape , Public health -- South Africa -- Eastern Cape , Hospitals -- South Africa -- Eastern Cape
- Description: The focus of this study is to identify the potential prognostic factors and symptoms that are associated with Cryptococcal Meningitis and to establish a statistical model for the prediction of outcomes (survival and mortality) among in-hospital patients. Materials and Method: The hospital admission books in the medical wards and pharmacy of the East London Hospital Complex were searched to identify the folder numbers of all the patients that were admitted, diagnosed and or treated for Cryptococcal Meningitis at the hospital between the 1st of January 2009 and the 31st of August 2012. 237 folders out of 519 folders reviewed had confirmed cases of Cryptococcal Meningitis. Data on patients’ demographics, In-hospital care, and Concurrent infection/health condition were collected and analysed in a cross-sectional study, using the univariable and multiple logistic regression. Analysis of data was done with SAS version 9.1.3 and NCSS version 2007 software. Results: In a multivariable logistic analysis of variables found to be significantly associated with Cryptococcal Meningitis in a univariable logistic regression, Being Conscious (i.e. a Glasgow Coma score of 15) (OR= 5.34,CI=2.85-9.99 p =<0.000); Having no history of TB infection (OR=28.91, CI= 3.68-226.89, p = <0.001); No Fits (OR = 2.59, CI= 1.18-5.68 p = 0.017); Being a non-smoker (OR =2.22,CI=1.13-4.34 p = 0.020); and Adhering to treatment instruction and guidelines (OR = 2.38, 1.15-4.89, p = 0.019) were the variables found to be significantly associated with the survival of a Cryptococcal Meningitis patient. The uninterrupted use of Amphotericin B (OR=3.04, CI=1.06-8.72, P=0.038) as a first line regimen was also found to be significantly associated with survival.On the other hand, being unconscious (i.e. Glasgow Coma score <15) (OR =5.34, CI=2.85-9.99, p = < 0.000), Currently having a TB infection (OR = 9.20, CI=2.77-30.57, p = < 0.000), Not adhering to treatment guidelines (OR=2.38, CI=1.15-4.89, p=0.019 ); Being a smoker (OR = 2.22, CI=1.13-4.34, p = 0.020) and having Fits (OR=2.59 CI=1.18-5.68 p=0.017 ) were found to be significantly associated with mortality. Headache (p= 0.505) was found not to be a significant predictor of survival contrary to the findings in many publications on Cryptococcal Meningitis. Owing to time constraint, testing data was not collected to validate the prognostic models. However, model diagnostics was done and the relevant statistics confirmed the goodness of fit and the predictive ability of the model Conclusion: It has been established in this study that certain baseline variables can be helpful in the prognosis of Cryptococcal Meningitis infection. It is therefore believed that these variables will help in improving the prognosis of the infection especially at the East London Hospital Complex. Though the statistical models will work well in predicting the outcome of Cryptococcal Meningitis infection for patients admitted at the East London Hospital Complex, adequate precaution must be exercised while attempting to apply it in other geographical areas.
- Full Text:
- Authors: Okorie, Ikechukwu Obinna
- Date: 2012
- Subjects: Meningitis -- South Africa -- Eastern Cape , Tuberculosis -- South Africa -- Eastern Cape , Public health -- South Africa -- Eastern Cape , Hospitals -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc (Biostatistics and Epidemiology)
- Identifier: vital:11782 , http://hdl.handle.net/10353/d1016194 , Meningitis -- South Africa -- Eastern Cape , Tuberculosis -- South Africa -- Eastern Cape , Public health -- South Africa -- Eastern Cape , Hospitals -- South Africa -- Eastern Cape
- Description: The focus of this study is to identify the potential prognostic factors and symptoms that are associated with Cryptococcal Meningitis and to establish a statistical model for the prediction of outcomes (survival and mortality) among in-hospital patients. Materials and Method: The hospital admission books in the medical wards and pharmacy of the East London Hospital Complex were searched to identify the folder numbers of all the patients that were admitted, diagnosed and or treated for Cryptococcal Meningitis at the hospital between the 1st of January 2009 and the 31st of August 2012. 237 folders out of 519 folders reviewed had confirmed cases of Cryptococcal Meningitis. Data on patients’ demographics, In-hospital care, and Concurrent infection/health condition were collected and analysed in a cross-sectional study, using the univariable and multiple logistic regression. Analysis of data was done with SAS version 9.1.3 and NCSS version 2007 software. Results: In a multivariable logistic analysis of variables found to be significantly associated with Cryptococcal Meningitis in a univariable logistic regression, Being Conscious (i.e. a Glasgow Coma score of 15) (OR= 5.34,CI=2.85-9.99 p =<0.000); Having no history of TB infection (OR=28.91, CI= 3.68-226.89, p = <0.001); No Fits (OR = 2.59, CI= 1.18-5.68 p = 0.017); Being a non-smoker (OR =2.22,CI=1.13-4.34 p = 0.020); and Adhering to treatment instruction and guidelines (OR = 2.38, 1.15-4.89, p = 0.019) were the variables found to be significantly associated with the survival of a Cryptococcal Meningitis patient. The uninterrupted use of Amphotericin B (OR=3.04, CI=1.06-8.72, P=0.038) as a first line regimen was also found to be significantly associated with survival.On the other hand, being unconscious (i.e. Glasgow Coma score <15) (OR =5.34, CI=2.85-9.99, p = < 0.000), Currently having a TB infection (OR = 9.20, CI=2.77-30.57, p = < 0.000), Not adhering to treatment guidelines (OR=2.38, CI=1.15-4.89, p=0.019 ); Being a smoker (OR = 2.22, CI=1.13-4.34, p = 0.020) and having Fits (OR=2.59 CI=1.18-5.68 p=0.017 ) were found to be significantly associated with mortality. Headache (p= 0.505) was found not to be a significant predictor of survival contrary to the findings in many publications on Cryptococcal Meningitis. Owing to time constraint, testing data was not collected to validate the prognostic models. However, model diagnostics was done and the relevant statistics confirmed the goodness of fit and the predictive ability of the model Conclusion: It has been established in this study that certain baseline variables can be helpful in the prognosis of Cryptococcal Meningitis infection. It is therefore believed that these variables will help in improving the prognosis of the infection especially at the East London Hospital Complex. Though the statistical models will work well in predicting the outcome of Cryptococcal Meningitis infection for patients admitted at the East London Hospital Complex, adequate precaution must be exercised while attempting to apply it in other geographical areas.
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Sedimentary environments and provenance of the Balfour Formation (Beaufort Group) in the area between Bedford and Adelaide, Eastern Cape Province, South Africa
- Authors: Oghenekome, Monica Enifome
- Date: 2012
- Subjects: Geology -- South Africa -- Balfour , Sedimentary basins -- South Africa -- Eastern Cape , Sediments (Geology) -- South Africa -- Eastern Cape , Sedimentation analysis , Beaufort Group (South Africa)
- Language: English
- Type: Thesis , Masters , MSc (Geology)
- Identifier: vital:11524 , http://hdl.handle.net/10353/d1004354 , Geology -- South Africa -- Balfour , Sedimentary basins -- South Africa -- Eastern Cape , Sediments (Geology) -- South Africa -- Eastern Cape , Sedimentation analysis , Beaufort Group (South Africa)
- Description: The research examines the sedimentary environments and provenance of the Balfour Formation of the Beaufort Group (Karoo Supergroup) in the Eastern Cape Province, South Africa. This Formation occurs in the southeastern part of the Karoo Basin. It consists of sedimentary rocks, which are an alternating siltstone, shale and mudstone succession with subordinate interbedded sandstone and subsequently intruded by Karoo dolerite in the form of sills and dykes. ithostratigraphically, the Balfour Formation is subdivided into five units namely, from the base to the top, the Oudeberg, Daggaboersnek, Barberskrans, Elandsberg and Palingkloof Members. The Balfour Formation is overlain by the Katberg Formation. This study involved field investigations in the vicinity of the towns of Bedford and Adelaide with integrated stratigraphical, sedimentological and petrological studies. A geological map was constructed after field investigations. Lithofacies of the Balfour Formation that were studied are characterised by sandstone facies (Sh, Sm, St, Sr, Sp) and fine-grained sediments (Fl or Fsm) which reflect point-bar, cut-bank, channel and floodplain deposits. Lithologically, the Oudeberg Member consists of sandstone of which some units are internally massive alternating with thin laminated siltstone and mudstone. The Daggaboersnek Member is characterised by regular, generally non-lenticular, overall stratification, in the Barberkrans Member consists of sandstone lithosomes, while the Elandsberg Member is an argillaceous unit, similar to the Daggaboersnek Member. The Palingkloof Member is composed predominantly of red mudstone that can be used to distinguish the Balfour Formation from the overlying Katberg Formation, which consists predominantly of sandstone. The stratigraphic sequence displays two fining upward megacycles of sedimentary deposits with change in the sediment supply pattern from low-sinuosity to high-sinuosity river systems which reflect both braid and meandering deposits, respectively. Sedimentary structures in the sandstone units and the provenance of the Balfour Formation indicate that these deposits were produced by rivers flowing from the southeast with minor drift towards the northwest. According to the composition of the sediments and their sequence of deposition the Formation represents a fluvial environment. Mineralogical and grain size data from the sandstones of the various members of the Balfour Formation indicate the same source area of granitic, metamorphic and older sedimentary rocks and show no significant petrographic differences. The petrographic and geochemical investigations confirmed the sandstone to be feldspathic litharenite and ultralithofeldspathic sandstone. The palaeocurrent investigation indicates the main provenance to have been situated to the southeast of the Karoo basin. Heavy-mineral concentrations within the sandstones also give an indication that the source had a transitional arc plate tectonic setting.
- Full Text:
- Authors: Oghenekome, Monica Enifome
- Date: 2012
- Subjects: Geology -- South Africa -- Balfour , Sedimentary basins -- South Africa -- Eastern Cape , Sediments (Geology) -- South Africa -- Eastern Cape , Sedimentation analysis , Beaufort Group (South Africa)
- Language: English
- Type: Thesis , Masters , MSc (Geology)
- Identifier: vital:11524 , http://hdl.handle.net/10353/d1004354 , Geology -- South Africa -- Balfour , Sedimentary basins -- South Africa -- Eastern Cape , Sediments (Geology) -- South Africa -- Eastern Cape , Sedimentation analysis , Beaufort Group (South Africa)
- Description: The research examines the sedimentary environments and provenance of the Balfour Formation of the Beaufort Group (Karoo Supergroup) in the Eastern Cape Province, South Africa. This Formation occurs in the southeastern part of the Karoo Basin. It consists of sedimentary rocks, which are an alternating siltstone, shale and mudstone succession with subordinate interbedded sandstone and subsequently intruded by Karoo dolerite in the form of sills and dykes. ithostratigraphically, the Balfour Formation is subdivided into five units namely, from the base to the top, the Oudeberg, Daggaboersnek, Barberskrans, Elandsberg and Palingkloof Members. The Balfour Formation is overlain by the Katberg Formation. This study involved field investigations in the vicinity of the towns of Bedford and Adelaide with integrated stratigraphical, sedimentological and petrological studies. A geological map was constructed after field investigations. Lithofacies of the Balfour Formation that were studied are characterised by sandstone facies (Sh, Sm, St, Sr, Sp) and fine-grained sediments (Fl or Fsm) which reflect point-bar, cut-bank, channel and floodplain deposits. Lithologically, the Oudeberg Member consists of sandstone of which some units are internally massive alternating with thin laminated siltstone and mudstone. The Daggaboersnek Member is characterised by regular, generally non-lenticular, overall stratification, in the Barberkrans Member consists of sandstone lithosomes, while the Elandsberg Member is an argillaceous unit, similar to the Daggaboersnek Member. The Palingkloof Member is composed predominantly of red mudstone that can be used to distinguish the Balfour Formation from the overlying Katberg Formation, which consists predominantly of sandstone. The stratigraphic sequence displays two fining upward megacycles of sedimentary deposits with change in the sediment supply pattern from low-sinuosity to high-sinuosity river systems which reflect both braid and meandering deposits, respectively. Sedimentary structures in the sandstone units and the provenance of the Balfour Formation indicate that these deposits were produced by rivers flowing from the southeast with minor drift towards the northwest. According to the composition of the sediments and their sequence of deposition the Formation represents a fluvial environment. Mineralogical and grain size data from the sandstones of the various members of the Balfour Formation indicate the same source area of granitic, metamorphic and older sedimentary rocks and show no significant petrographic differences. The petrographic and geochemical investigations confirmed the sandstone to be feldspathic litharenite and ultralithofeldspathic sandstone. The palaeocurrent investigation indicates the main provenance to have been situated to the southeast of the Karoo basin. Heavy-mineral concentrations within the sandstones also give an indication that the source had a transitional arc plate tectonic setting.
- Full Text:
Photocatalytic activity and antibacterial properties of Ag/N-doped TiO2 nanoparticles on PVAE-CS nanofibre support
- Authors: Ocwelwang, Atsile Rosy
- Date: 2012
- Subjects: Nanocomposites (Materials) , Nanofibers , Electrospinning
- Language: English
- Type: Thesis , Masters , MSc (Chemistry)
- Identifier: vital:11337 , http://hdl.handle.net/10353/d1006794 , Nanocomposites (Materials) , Nanofibers , Electrospinning
- Description: Lack of potable water is one of the major challenges that the world faces currently and the effects of this are mainly experienced by people in developing countries. This has therefore propelled research in advanced oxidation technologies AOTs to improve the current water treatment methods using cost effective, non toxic and efficient treatment methods. Hence, in this study the sol-gel synthesis method was used to prepare TiO2 nanoparticles that were photocatalytically active under UV and visible solar light as well as possessing antibacterial properties. Silver and nitrogen doping was carried out to extend the optical absorption of TiO2. For easy removal and reuse of the photocatalyst the nanoparticles were immobilized on chitosan and poly (vinyl-alcohol-co-ethylene) using the electrospining technique. The synthesized nanomaterials were characterized by FTIR, XRD, SEM/EDS, TEM, DRS, and TGA. FTIR and EDS analysis confirmed the formation and composition of TiO2 nanopowders for the doped and undoped nanoparticles. XRD analysis showed that the anatase phase was the dominant crystalline phase of the synthesized nanopowders. SEM and TEM respectively illustrated the distribution and size of the electrospun nanofibers and the nanoparticles of TiO2. DRS results showed that there was a significant shift in the absorption band edge and wavelength of Ag-TiO2 to 397 nm, followed by N-TiO2 at 396 nm compared to the commercial titania which was at 359 nm. The photocatalytic activities and antibacterial properties of these materials were tested on methylene blue dye and E.coli microorganism respectively. Ag-TiO2 immobilized on nanofibers of chitosan and PVAE had the highest photocatalytic activity compared to N-TiO2. Similar results were observed when the biocide properties of these materials were tested on E. coli.
- Full Text:
- Authors: Ocwelwang, Atsile Rosy
- Date: 2012
- Subjects: Nanocomposites (Materials) , Nanofibers , Electrospinning
- Language: English
- Type: Thesis , Masters , MSc (Chemistry)
- Identifier: vital:11337 , http://hdl.handle.net/10353/d1006794 , Nanocomposites (Materials) , Nanofibers , Electrospinning
- Description: Lack of potable water is one of the major challenges that the world faces currently and the effects of this are mainly experienced by people in developing countries. This has therefore propelled research in advanced oxidation technologies AOTs to improve the current water treatment methods using cost effective, non toxic and efficient treatment methods. Hence, in this study the sol-gel synthesis method was used to prepare TiO2 nanoparticles that were photocatalytically active under UV and visible solar light as well as possessing antibacterial properties. Silver and nitrogen doping was carried out to extend the optical absorption of TiO2. For easy removal and reuse of the photocatalyst the nanoparticles were immobilized on chitosan and poly (vinyl-alcohol-co-ethylene) using the electrospining technique. The synthesized nanomaterials were characterized by FTIR, XRD, SEM/EDS, TEM, DRS, and TGA. FTIR and EDS analysis confirmed the formation and composition of TiO2 nanopowders for the doped and undoped nanoparticles. XRD analysis showed that the anatase phase was the dominant crystalline phase of the synthesized nanopowders. SEM and TEM respectively illustrated the distribution and size of the electrospun nanofibers and the nanoparticles of TiO2. DRS results showed that there was a significant shift in the absorption band edge and wavelength of Ag-TiO2 to 397 nm, followed by N-TiO2 at 396 nm compared to the commercial titania which was at 359 nm. The photocatalytic activities and antibacterial properties of these materials were tested on methylene blue dye and E.coli microorganism respectively. Ag-TiO2 immobilized on nanofibers of chitosan and PVAE had the highest photocatalytic activity compared to N-TiO2. Similar results were observed when the biocide properties of these materials were tested on E. coli.
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Factors that conduce towards domestic violence against rural women a case study of Sisonke District Municipality KwaZulu Natal
- Authors: Nyathi, Noluvo Annagratia
- Date: 2012
- Subjects: Spousal abuse -- South Africa -- KwaZulu Natal , Human rights -- South Africa , Crimes against -- Women , Legal status laws etc -- South Africa -- KwaZulu Natal , Domestic Violence -- KwaZulu Natal -- South Africa
- Language: English
- Type: Thesis , Masters , MA (Human Rights)
- Identifier: vital:11100 , http://hdl.handle.net/10353/509 , Spousal abuse -- South Africa -- KwaZulu Natal , Human rights -- South Africa , Crimes against -- Women , Legal status laws etc -- South Africa -- KwaZulu Natal , Domestic Violence -- KwaZulu Natal -- South Africa
- Description: In all the Black communities, women’s rights have always been taken for granted. Women have always been subordinate to the patriarchal system. The denial of domestic violence against rural women has its origin in the age long patriarchal society, deeply rooted in culture and tradition. The main aim of the patriarchal society is the control of women by men. The idea of protecting women abuse is not really new. It is a necessary component of long established and internationally recognized human rights. This includes the right to equality and freedom, liberty and personal security. The recognition could be traced to the adoption of the Universal Declaration of Human Rights of 1948 (UDHR). However, women’s rights remain unrealized and are continuously violated despite the fact that these rights are well expressed in many international documents and national laws. The study examined the factors that conduce towards domestic violence against rural women in the Kwa Zulu Natal Province of South Africa. In this regard, the reasons why they support culture and traditional practices that are detrimental to their health were also explored. The small isolated area of Umzimkhulu was used. In-depth face to face interviews were employed to elicit information from the respondents and brief notes were written down to collect the data. The findings revealed that women are not aware of their human rights. This ignorance and negative attitude is influenced by the dependency of women to men, supremacy of the patriarchal system and the dominance of culture. Most disturbing is that these women don’t seem to see anything wrong with the situation. It is evidently clear therefore that women empowerment, through education, will not only affect women’s autonomy but will also increase their worth and make them understand the impact of traditional practices that they support. All these will have implications for policy and legislative interventions.
- Full Text:
- Authors: Nyathi, Noluvo Annagratia
- Date: 2012
- Subjects: Spousal abuse -- South Africa -- KwaZulu Natal , Human rights -- South Africa , Crimes against -- Women , Legal status laws etc -- South Africa -- KwaZulu Natal , Domestic Violence -- KwaZulu Natal -- South Africa
- Language: English
- Type: Thesis , Masters , MA (Human Rights)
- Identifier: vital:11100 , http://hdl.handle.net/10353/509 , Spousal abuse -- South Africa -- KwaZulu Natal , Human rights -- South Africa , Crimes against -- Women , Legal status laws etc -- South Africa -- KwaZulu Natal , Domestic Violence -- KwaZulu Natal -- South Africa
- Description: In all the Black communities, women’s rights have always been taken for granted. Women have always been subordinate to the patriarchal system. The denial of domestic violence against rural women has its origin in the age long patriarchal society, deeply rooted in culture and tradition. The main aim of the patriarchal society is the control of women by men. The idea of protecting women abuse is not really new. It is a necessary component of long established and internationally recognized human rights. This includes the right to equality and freedom, liberty and personal security. The recognition could be traced to the adoption of the Universal Declaration of Human Rights of 1948 (UDHR). However, women’s rights remain unrealized and are continuously violated despite the fact that these rights are well expressed in many international documents and national laws. The study examined the factors that conduce towards domestic violence against rural women in the Kwa Zulu Natal Province of South Africa. In this regard, the reasons why they support culture and traditional practices that are detrimental to their health were also explored. The small isolated area of Umzimkhulu was used. In-depth face to face interviews were employed to elicit information from the respondents and brief notes were written down to collect the data. The findings revealed that women are not aware of their human rights. This ignorance and negative attitude is influenced by the dependency of women to men, supremacy of the patriarchal system and the dominance of culture. Most disturbing is that these women don’t seem to see anything wrong with the situation. It is evidently clear therefore that women empowerment, through education, will not only affect women’s autonomy but will also increase their worth and make them understand the impact of traditional practices that they support. All these will have implications for policy and legislative interventions.
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Evaluation of poverty alleviation strategies implemented by non-governmental organisations (NGOs) in Zimbabwe: a case of Binga rural district
- Authors: Nyathi, Daina
- Date: 2012
- Subjects: Poverty -- Zimbabwe , Rural poor -- Zimbabwe Case studies , Non-governmental organizations -- Zimbabwe -- Evaluation , Sustainable development -- Zimbabwe
- Language: English
- Type: Thesis , Masters , M Soc Sc (Dev)
- Identifier: vital:11426 , http://hdl.handle.net/10353/507 , Poverty -- Zimbabwe , Rural poor -- Zimbabwe Case studies , Non-governmental organizations -- Zimbabwe -- Evaluation , Sustainable development -- Zimbabwe
- Description: The problem this research seeks to address is about the ineffectiveness of NGOs’ strategies implemented in the rural areas of Binga District in Zimbabwe. The research has been basically influenced by personal concerns which I believe have influenced the selection of the research problem. My main concern is the deepening of poverty in Binga District. Lack of infrastructure like roads, shortage of schools leading to high illiteracy levels, shortage of clinics and hospitals, lack of clean water, high unemployment levels are the indicators of poverty in Binga. Country wide, the district is regarded as one of the poorest districts. The purpose of this study was to evaluate the effectiveness of the poverty alleviation strategies implemented by NGOs in the rural areas of Zimbabwe specifically in Binga. Today there are more than fifteen NGOs that operate in Binga and they specialise in different areas ranging from food distribution, education, agriculture, conservation and advocacy. What matters most is that despite the number of NGOs operating in Binga, poverty is still intensifying and widening. Through the research, it was found that most NGOs’ strategies in Binga focus on relief than developmental aid. Also when addressing poverty, NGOs use the trickle down approach than the bottom up approach. Moreover, the strategies implemented in Binga do not address the needs of the poor. The political instability in Zimbabwe is also believed to be a serious stumbling block to the operation of NGOs in Binga and the rest of the country. Finally, the research recommends NGOs to use the participatory approach as well as the sustainable livelihoods approach in dealing with poverty. Again, NGOs need to monitor and evaluate their projects because most of their projects are not monitored and evaluated properly. Above all the NGOs’ strategies for alleviating poverty need to be reviewed.
- Full Text:
- Authors: Nyathi, Daina
- Date: 2012
- Subjects: Poverty -- Zimbabwe , Rural poor -- Zimbabwe Case studies , Non-governmental organizations -- Zimbabwe -- Evaluation , Sustainable development -- Zimbabwe
- Language: English
- Type: Thesis , Masters , M Soc Sc (Dev)
- Identifier: vital:11426 , http://hdl.handle.net/10353/507 , Poverty -- Zimbabwe , Rural poor -- Zimbabwe Case studies , Non-governmental organizations -- Zimbabwe -- Evaluation , Sustainable development -- Zimbabwe
- Description: The problem this research seeks to address is about the ineffectiveness of NGOs’ strategies implemented in the rural areas of Binga District in Zimbabwe. The research has been basically influenced by personal concerns which I believe have influenced the selection of the research problem. My main concern is the deepening of poverty in Binga District. Lack of infrastructure like roads, shortage of schools leading to high illiteracy levels, shortage of clinics and hospitals, lack of clean water, high unemployment levels are the indicators of poverty in Binga. Country wide, the district is regarded as one of the poorest districts. The purpose of this study was to evaluate the effectiveness of the poverty alleviation strategies implemented by NGOs in the rural areas of Zimbabwe specifically in Binga. Today there are more than fifteen NGOs that operate in Binga and they specialise in different areas ranging from food distribution, education, agriculture, conservation and advocacy. What matters most is that despite the number of NGOs operating in Binga, poverty is still intensifying and widening. Through the research, it was found that most NGOs’ strategies in Binga focus on relief than developmental aid. Also when addressing poverty, NGOs use the trickle down approach than the bottom up approach. Moreover, the strategies implemented in Binga do not address the needs of the poor. The political instability in Zimbabwe is also believed to be a serious stumbling block to the operation of NGOs in Binga and the rest of the country. Finally, the research recommends NGOs to use the participatory approach as well as the sustainable livelihoods approach in dealing with poverty. Again, NGOs need to monitor and evaluate their projects because most of their projects are not monitored and evaluated properly. Above all the NGOs’ strategies for alleviating poverty need to be reviewed.
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The role of the peer educators in enhancing social and emotional learning: a case of foursecondary schools in Fort Beaufort district
- Authors: Nyarayi Chinyama
- Date: 2012
- Subjects: Schools -- South Africa -- Eastern Cape -- Social conditions , Peer teaching -- Education, Secondary -- South Africa- - Eastern Cape , Learning, Psychology of , School management and organization -- South Africa -- Eastern Cape , Teachers -- South Africa -- Eastern Cape , Education and state -- South Africa -- Eastern Cape , Fort Beaufort (South Africa)
- Language: English
- Type: Thesis , Masters , M Ed
- Identifier: vital:16193 , http://hdl.handle.net/10353/d1006257 , Schools -- South Africa -- Eastern Cape -- Social conditions , Peer teaching -- Education, Secondary -- South Africa- - Eastern Cape , Learning, Psychology of , School management and organization -- South Africa -- Eastern Cape , Teachers -- South Africa -- Eastern Cape , Education and state -- South Africa -- Eastern Cape , Fort Beaufort (South Africa)
- Description: The aim of this study was to explore how peer education is enhancing social-emotional learning in four secondary schools in Fort Beaufort Education District. An empirical investigation using the qualitative approach examined the situation of the peer education clubs at the four schools. Data was gathered using interviews, focus groups, observations and document analysis. The purpose of the study was to examine the role of peer education programmes in enhancing social and emotional learning in schools. In this research study specifically the qualitative research approach was used. The study also adopted a purposive sampling procedure which is acceptable for special sampling situations where the researcher applied her own experience to select cases which form part of the participants. Four schools were selected, four principals, four teachers who work with peer education clubs, four focus groups, one HIV/AIDS district coordinator, and one peer group trainer. It emerged from the analysis of the collected data that peer education clubs in Fort Beaufort have a number of challenges facing them, resulting in them making insignificant contributions towards the enhancing of social-emotional learning. The clubs’ efforts have resulted in little positive behavioural change among the youth. Among the challenges revealed are: lack of proper structures and support from school administrators, poor selection of peer educators, lack of time and facilities in which to carry out their work, lack of adequate training for both teachers and peer educators. Teacher interference was also cited regularly at all four schools, thereby defeating the whole idea of peer education. The study also revealed that peer educators in Fort Beaufort are not receiving adequate support from other stakeholders like, the police, the justice department and social welfare. Another critical observation made during the study was that peer education clubs are lacking clear standards of practice, rigour and sustainability, all which should be addressed in order to enhance social-emotional learning in schools. Data was analysed using a thematic content analysis. The analysis was carried out in a manner that related to the research questions and objectives in the study. A transcript was made from the respondents’ answers. Reflection and coding was done and data was categorised as an important learning tool in schools, and to recognise its contribution to social emotional learning. The study concluded that peer education clubs in schools, despite their huge potential to improve both behaviour and academic results, are not being given a conducive environment to operate in or the necessary support. This effectively means that learners with some behavioural problems and who have the potential to reform are also being denied the opportunity to lead better lives. The Department is advised to increase the number of both peer education trainers and trained peer educators. Furthermore the training period of peer educators should be increased from the current five days. There is need for the Department of Education to formalise peer education clubs in schools and craft laws that makes it mandatory for schools to provide the clubs with decent facilities like confidential rooms to conduct their activities. More so the study recommends that there is need to train all teachers in schools in social skills and not only LO teachers to ease supervisory burden on the LO teachers.
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- Authors: Nyarayi Chinyama
- Date: 2012
- Subjects: Schools -- South Africa -- Eastern Cape -- Social conditions , Peer teaching -- Education, Secondary -- South Africa- - Eastern Cape , Learning, Psychology of , School management and organization -- South Africa -- Eastern Cape , Teachers -- South Africa -- Eastern Cape , Education and state -- South Africa -- Eastern Cape , Fort Beaufort (South Africa)
- Language: English
- Type: Thesis , Masters , M Ed
- Identifier: vital:16193 , http://hdl.handle.net/10353/d1006257 , Schools -- South Africa -- Eastern Cape -- Social conditions , Peer teaching -- Education, Secondary -- South Africa- - Eastern Cape , Learning, Psychology of , School management and organization -- South Africa -- Eastern Cape , Teachers -- South Africa -- Eastern Cape , Education and state -- South Africa -- Eastern Cape , Fort Beaufort (South Africa)
- Description: The aim of this study was to explore how peer education is enhancing social-emotional learning in four secondary schools in Fort Beaufort Education District. An empirical investigation using the qualitative approach examined the situation of the peer education clubs at the four schools. Data was gathered using interviews, focus groups, observations and document analysis. The purpose of the study was to examine the role of peer education programmes in enhancing social and emotional learning in schools. In this research study specifically the qualitative research approach was used. The study also adopted a purposive sampling procedure which is acceptable for special sampling situations where the researcher applied her own experience to select cases which form part of the participants. Four schools were selected, four principals, four teachers who work with peer education clubs, four focus groups, one HIV/AIDS district coordinator, and one peer group trainer. It emerged from the analysis of the collected data that peer education clubs in Fort Beaufort have a number of challenges facing them, resulting in them making insignificant contributions towards the enhancing of social-emotional learning. The clubs’ efforts have resulted in little positive behavioural change among the youth. Among the challenges revealed are: lack of proper structures and support from school administrators, poor selection of peer educators, lack of time and facilities in which to carry out their work, lack of adequate training for both teachers and peer educators. Teacher interference was also cited regularly at all four schools, thereby defeating the whole idea of peer education. The study also revealed that peer educators in Fort Beaufort are not receiving adequate support from other stakeholders like, the police, the justice department and social welfare. Another critical observation made during the study was that peer education clubs are lacking clear standards of practice, rigour and sustainability, all which should be addressed in order to enhance social-emotional learning in schools. Data was analysed using a thematic content analysis. The analysis was carried out in a manner that related to the research questions and objectives in the study. A transcript was made from the respondents’ answers. Reflection and coding was done and data was categorised as an important learning tool in schools, and to recognise its contribution to social emotional learning. The study concluded that peer education clubs in schools, despite their huge potential to improve both behaviour and academic results, are not being given a conducive environment to operate in or the necessary support. This effectively means that learners with some behavioural problems and who have the potential to reform are also being denied the opportunity to lead better lives. The Department is advised to increase the number of both peer education trainers and trained peer educators. Furthermore the training period of peer educators should be increased from the current five days. There is need for the Department of Education to formalise peer education clubs in schools and craft laws that makes it mandatory for schools to provide the clubs with decent facilities like confidential rooms to conduct their activities. More so the study recommends that there is need to train all teachers in schools in social skills and not only LO teachers to ease supervisory burden on the LO teachers.
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An assessment of the implementation of intervention programmes which ensure the right to education for orphans in King Williams Town District
- Authors: Ntshuntshe, Zoleka
- Date: 2012
- Subjects: Student assistance programs
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/24661 , vital:63399
- Description: The purpose of the study was to assess the implementation of intervention programmes that ensure the right to education for orphans in schools in the King William’s Town District. Data from the study revealed that there were a number of challenges faced by orphans with regards to accessing social grants and this affected their school performance negatively. Some of the challenges were (1) even though orphans were receiving the social grant, it was inadequate to provide for their home and school needs; (2) there was lack of information by applicants to access documents they needed to apply for social grants. This was an impediment to access to funds from social grants. (3) The long distances travelled by people to reach social services posed obstacles to those wishing to apply for grants. (4) Applicants lacked proper documentation such as birth certificates and parents’ death certificates which could impede application processes for social grants and (5) Lack of monitoring of social grants resulted in the misuse of funds by some caregivers. In the schools it was also established that there was irregular distribution of food parcels which resulted from some people who gave food to their families and friends, leaving the needy ones out. The No fee policy however was a success as most learners were able to remain in school. With regard to school attendance, some of the challenges were: (1) that some learners were struggling to buy school books as this was not covered by the policy. (2) There was slow implementation of scholar nutrition programme with some schools in quintile 1-3 still not being able to benefit from the programme. (3) Scholar transport was not available to most of the learners and (4) learners were without counseling services, since teachers were not trained in psychosocial support. Nonetheless, social workers were adequately trained to provide psychosocial support to learners. In addition, non governmental organizations contributed a vital service by providing orphans with uniforms and food. However their work was limited by resources and funding. The study was situated in the interpretive paradigm which seeks to construct detailed descriptions of reality. The qualitative methods were suitable for data collection purposes because they allowed the use of interviews which collected detailed, authentic information of what goes on in the schools. It was therefore the best method for the research study which seeks to assess implementation of intervention programmes for orphans as they related the challenges they encounter in the implementation of intervention programmes in their schools. Purposive sampling was used to select 8 orphans, 8 caregivers, 4 principals, 4 teachers and 4 social workers from the 4 schools in the district. The study recommends that the Child Support Grant be reviewed upwards and that monitoring be strengthened so that grants are not misused. It is further recommended that the department of social services synchronize its information dissemination strategies with other stakeholder departments, such as the department of education so as to benefit orphans. It is also recommended that the No fee policy be strengthened by such additions as providing books for orphans and other vulnerable children in schools. Finally the study recommends scholar transport to be implemented as learners still have to walk long distances to school. , Thesis (MEd) -- Faculty of Education, 2012
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- Authors: Ntshuntshe, Zoleka
- Date: 2012
- Subjects: Student assistance programs
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/24661 , vital:63399
- Description: The purpose of the study was to assess the implementation of intervention programmes that ensure the right to education for orphans in schools in the King William’s Town District. Data from the study revealed that there were a number of challenges faced by orphans with regards to accessing social grants and this affected their school performance negatively. Some of the challenges were (1) even though orphans were receiving the social grant, it was inadequate to provide for their home and school needs; (2) there was lack of information by applicants to access documents they needed to apply for social grants. This was an impediment to access to funds from social grants. (3) The long distances travelled by people to reach social services posed obstacles to those wishing to apply for grants. (4) Applicants lacked proper documentation such as birth certificates and parents’ death certificates which could impede application processes for social grants and (5) Lack of monitoring of social grants resulted in the misuse of funds by some caregivers. In the schools it was also established that there was irregular distribution of food parcels which resulted from some people who gave food to their families and friends, leaving the needy ones out. The No fee policy however was a success as most learners were able to remain in school. With regard to school attendance, some of the challenges were: (1) that some learners were struggling to buy school books as this was not covered by the policy. (2) There was slow implementation of scholar nutrition programme with some schools in quintile 1-3 still not being able to benefit from the programme. (3) Scholar transport was not available to most of the learners and (4) learners were without counseling services, since teachers were not trained in psychosocial support. Nonetheless, social workers were adequately trained to provide psychosocial support to learners. In addition, non governmental organizations contributed a vital service by providing orphans with uniforms and food. However their work was limited by resources and funding. The study was situated in the interpretive paradigm which seeks to construct detailed descriptions of reality. The qualitative methods were suitable for data collection purposes because they allowed the use of interviews which collected detailed, authentic information of what goes on in the schools. It was therefore the best method for the research study which seeks to assess implementation of intervention programmes for orphans as they related the challenges they encounter in the implementation of intervention programmes in their schools. Purposive sampling was used to select 8 orphans, 8 caregivers, 4 principals, 4 teachers and 4 social workers from the 4 schools in the district. The study recommends that the Child Support Grant be reviewed upwards and that monitoring be strengthened so that grants are not misused. It is further recommended that the department of social services synchronize its information dissemination strategies with other stakeholder departments, such as the department of education so as to benefit orphans. It is also recommended that the No fee policy be strengthened by such additions as providing books for orphans and other vulnerable children in schools. Finally the study recommends scholar transport to be implemented as learners still have to walk long distances to school. , Thesis (MEd) -- Faculty of Education, 2012
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Teacher's and principal's perceptions of the integrated quality management system (IQMS) in three Butterworth District schools
- Authors: Ntshewula, Nombulelo
- Date: 2012
- Subjects: Total quality management , Quality assurance -- South Africa -- Eastern Cape , Teachers -- Training -- South Africa -- Eastern Cape , Employees -- Rating of -- South Africa -- Eastern Cape , School principals -- South Africa -- Eastern Cape , Educational evaluation -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , M Ed
- Identifier: vital:16197 , http://hdl.handle.net/10353/d1007301 , Total quality management , Quality assurance -- South Africa -- Eastern Cape , Teachers -- Training -- South Africa -- Eastern Cape , Employees -- Rating of -- South Africa -- Eastern Cape , School principals -- South Africa -- Eastern Cape , Educational evaluation -- South Africa -- Eastern Cape
- Description: The researcher’s interest in this study is in teachers’ perceptions and principals of the Integrated Quality Management System (IQMS). This study examines teachers’ understandings of this quality management and performance appraisal system, how teachers perceive the instrument used to manage and monitor their performance and the performance of their schools, and what lessons may be learnt regarding the implementation process of the IQMS. The investigation was carried out in three Butterworth District schools in the Eastern Cape. The researcher made use of qualitative methodology to obtain data from a sample of 3 principals, 9 teachers and 1 district official. Data were collected from these respondents by means of in-depth, semi-structured interviews and through document analysis. The study found that some of the teachers and principals felt that they did not understand the IQMS, and they complained that the system is fraught with many obstacles that need to be addressed in order to promote the effectiveness of teaching and learning. The participants also spoke of multiple factors that contribute negatively to this phenomenon, which include the fact that the teachers’ workload is increased by the IQMS, time constraints, inadequate training, vague and unfamiliar language, the financial incentive that is attached to the instrument, and the many structures in the implementation process. In addition, the system seems to encourage a bureaucratic style of management. Teachers and principals also suggested ways in which the IQMS could be structured by the Department of Education for greater efficiency in education.
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- Authors: Ntshewula, Nombulelo
- Date: 2012
- Subjects: Total quality management , Quality assurance -- South Africa -- Eastern Cape , Teachers -- Training -- South Africa -- Eastern Cape , Employees -- Rating of -- South Africa -- Eastern Cape , School principals -- South Africa -- Eastern Cape , Educational evaluation -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , M Ed
- Identifier: vital:16197 , http://hdl.handle.net/10353/d1007301 , Total quality management , Quality assurance -- South Africa -- Eastern Cape , Teachers -- Training -- South Africa -- Eastern Cape , Employees -- Rating of -- South Africa -- Eastern Cape , School principals -- South Africa -- Eastern Cape , Educational evaluation -- South Africa -- Eastern Cape
- Description: The researcher’s interest in this study is in teachers’ perceptions and principals of the Integrated Quality Management System (IQMS). This study examines teachers’ understandings of this quality management and performance appraisal system, how teachers perceive the instrument used to manage and monitor their performance and the performance of their schools, and what lessons may be learnt regarding the implementation process of the IQMS. The investigation was carried out in three Butterworth District schools in the Eastern Cape. The researcher made use of qualitative methodology to obtain data from a sample of 3 principals, 9 teachers and 1 district official. Data were collected from these respondents by means of in-depth, semi-structured interviews and through document analysis. The study found that some of the teachers and principals felt that they did not understand the IQMS, and they complained that the system is fraught with many obstacles that need to be addressed in order to promote the effectiveness of teaching and learning. The participants also spoke of multiple factors that contribute negatively to this phenomenon, which include the fact that the teachers’ workload is increased by the IQMS, time constraints, inadequate training, vague and unfamiliar language, the financial incentive that is attached to the instrument, and the many structures in the implementation process. In addition, the system seems to encourage a bureaucratic style of management. Teachers and principals also suggested ways in which the IQMS could be structured by the Department of Education for greater efficiency in education.
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Study of technology education instructional practices in grade nine classrooms a case study of three senior secondary schools in the King Williams Town district
- Authors: Ntshaba, Lulama Princess
- Date: 2012
- Subjects: Education, Secondary -- South Africa -- Eastern Cape -- Case studies , Technology -- Study and teaching -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , M Ed
- Identifier: vital:16177 , http://hdl.handle.net/10353/486 , Education, Secondary -- South Africa -- Eastern Cape -- Case studies , Technology -- Study and teaching -- South Africa -- Eastern Cape
- Description: The purpose of this study is to investigate teaching and learning practices in Grade nine Technology Education classrooms. However, this is to ensure the relationship between the existing Technology Education teaching and learning practices and the Revised National Curriculum Statement (RNCS) requirements. The study was conducted in three King William’s Town Senior Secondary schools. The research took the form of a qualitative interpretive case study focusing on a study sample of three Technology Education teacher participants. The qualitative methods used allowed the researcher to gather the data in order to describe and interpret teachers’ Technology Education instructional practices in Grade nine classrooms. The data was gathered by the observation of Technology Education lessons in the classrooms, through the interviews, as well as the examination of the learning area policy documents (mainly the lesson plans and the activities in the classrooms). In contrast to the past traditional curriculum, the outcomes-based RNCS proposes that teachers teach for understanding and concept development with emphasis on active learning, problem solving, reasoning and communicating technologically. To achieve the outcomes of the RNCS, teachers who are regarded as the “key contributors to the transformation of education in South Africa” need to be “qualified, competent, dedicated, caring and be able to fulfill the various roles outlined in the Norms and Standards for educators” (Department of Education, 2002a, p.9). vi It has been evident by the researcher that instructional practices are not aligned with curriculum expectations. The findings revealed two fundamental reasons for this, namely the teachers’ understanding of the RNCS is limited and teachers’ lack of confidence with regard to content knowledge for Technology Education teaching. Teacher competence relates to teachers having the content knowledge and the ability to use this knowledge pedagogically to ensure that the curriculum is thoroughly covered at all levels. It has been recommended in this study that teacher development needs to become a priority. It is vital, that programmes are developed to retrain Grade nine Technology Education teachers in-service.
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- Authors: Ntshaba, Lulama Princess
- Date: 2012
- Subjects: Education, Secondary -- South Africa -- Eastern Cape -- Case studies , Technology -- Study and teaching -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , M Ed
- Identifier: vital:16177 , http://hdl.handle.net/10353/486 , Education, Secondary -- South Africa -- Eastern Cape -- Case studies , Technology -- Study and teaching -- South Africa -- Eastern Cape
- Description: The purpose of this study is to investigate teaching and learning practices in Grade nine Technology Education classrooms. However, this is to ensure the relationship between the existing Technology Education teaching and learning practices and the Revised National Curriculum Statement (RNCS) requirements. The study was conducted in three King William’s Town Senior Secondary schools. The research took the form of a qualitative interpretive case study focusing on a study sample of three Technology Education teacher participants. The qualitative methods used allowed the researcher to gather the data in order to describe and interpret teachers’ Technology Education instructional practices in Grade nine classrooms. The data was gathered by the observation of Technology Education lessons in the classrooms, through the interviews, as well as the examination of the learning area policy documents (mainly the lesson plans and the activities in the classrooms). In contrast to the past traditional curriculum, the outcomes-based RNCS proposes that teachers teach for understanding and concept development with emphasis on active learning, problem solving, reasoning and communicating technologically. To achieve the outcomes of the RNCS, teachers who are regarded as the “key contributors to the transformation of education in South Africa” need to be “qualified, competent, dedicated, caring and be able to fulfill the various roles outlined in the Norms and Standards for educators” (Department of Education, 2002a, p.9). vi It has been evident by the researcher that instructional practices are not aligned with curriculum expectations. The findings revealed two fundamental reasons for this, namely the teachers’ understanding of the RNCS is limited and teachers’ lack of confidence with regard to content knowledge for Technology Education teaching. Teacher competence relates to teachers having the content knowledge and the ability to use this knowledge pedagogically to ensure that the curriculum is thoroughly covered at all levels. It has been recommended in this study that teacher development needs to become a priority. It is vital, that programmes are developed to retrain Grade nine Technology Education teachers in-service.
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