A study of the southwestern Karoo basin in South Africa using magnetic and gravity data
- Authors: Nxantsiya, Zusakhe
- Date: 2017
- Subjects: Groundwater -- South Africa -- Karoo Aquifers -- South Africa -- Karoo Hydrology -- South Africa -- Karoo
- Language: English
- Type: Thesis , Masters , Degree
- Identifier: http://hdl.handle.net/10353/4748 , vital:28509
- Description: The early efforts of Booth, Johnson, Rubidge, Catuneanu, de Wit, Chevallier, Stankiewicz, Weckmann and many other scientists in studying the Karoo Supergroup has led to comprehensive documentation of the geology on the main Karoo Basin with regards to understanding the age, sedimentology, sedimentary facies and depositional environments. In spite of these studies, the subsurface structure, variations in thickness of various formations in large parts of the basin, the location and orientation of subsurface dolerite intrusions, and the depth to magnetic and gravity sources remains poorly documented. A geological study with the aid of geophysical techniques, magnetic and gravity, was conducted in the southwestern part of the main Karoo Basin. The objectives of the study were to construct numerous models of the main basin that image the crust to a depth of 45 km, to determine thicknesses of various formations, to relate observed geophysical anomalies with geological bodies and lineaments, to estimate the depth of existing anomalous bodies, to determine densities and porosity of various formations, as well as to determine the mineralogy of various rocks in the Karoo Basin.
- Full Text:
- Authors: Nxantsiya, Zusakhe
- Date: 2017
- Subjects: Groundwater -- South Africa -- Karoo Aquifers -- South Africa -- Karoo Hydrology -- South Africa -- Karoo
- Language: English
- Type: Thesis , Masters , Degree
- Identifier: http://hdl.handle.net/10353/4748 , vital:28509
- Description: The early efforts of Booth, Johnson, Rubidge, Catuneanu, de Wit, Chevallier, Stankiewicz, Weckmann and many other scientists in studying the Karoo Supergroup has led to comprehensive documentation of the geology on the main Karoo Basin with regards to understanding the age, sedimentology, sedimentary facies and depositional environments. In spite of these studies, the subsurface structure, variations in thickness of various formations in large parts of the basin, the location and orientation of subsurface dolerite intrusions, and the depth to magnetic and gravity sources remains poorly documented. A geological study with the aid of geophysical techniques, magnetic and gravity, was conducted in the southwestern part of the main Karoo Basin. The objectives of the study were to construct numerous models of the main basin that image the crust to a depth of 45 km, to determine thicknesses of various formations, to relate observed geophysical anomalies with geological bodies and lineaments, to estimate the depth of existing anomalous bodies, to determine densities and porosity of various formations, as well as to determine the mineralogy of various rocks in the Karoo Basin.
- Full Text:
Biological children's experiences and perceptions about having foster children in their households: a case study of Zwelitsha township
- Authors: Ntshongwana, Zintle
- Date: 2017
- Subjects: Foster children -- South Africa -- Eastern Cape Social work with teenagers -- South Africa -- Eastern Cape Foster parents -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , Degree
- Identifier: http://hdl.handle.net/10353/3033 , vital:28240
- Description: Most research studies focus on foster children or foster parents, there is dearth of research on the impact of fostering on biological children. This aim of this study was to fill the gap in the literature regarding the experiences of biological children sharing a home with foster children. It also investigated how biological children perceive foster care and challenges encountered by children under foster care. This was achieved through a qualitative research approach. The study was conducted at Zwelitsha Township in King Williams Town. Data was collected through semi-structured interviews with thirty biological children of foster parents and ten social workers in practice. Two focus group discussions were held with twenty foster parents. A focus group discussion guide was used in collecting information during the discussions. Purposive sampling was used in the study and data was analysed according to themes. The major findings revealed that fostering has both positive and negative impacts on biological children and the foster family. Biological children find foster care placement as helpful to children whose parents cannot provide care and protection for children. They gain and learn new knowledge through fostering and are happy about their new siblings in the family since they have companionship. On the other hand, minority of biological children were ambivalent about foster care as they were uncertain between altruistic feelings of making a difference in the lives of needy children against the negative outcomes of fostering. One biological child was negative about foster care. This participant did not like the idea of fostering and did not describe any personal positive outcomes resulting from his fostering experiences. The findings revealed that biological children are unable to voice out their views and ideas regarding foster care placement. The findings also revealed that biological children are not passive observers on how fostering influences their daily lives. Instead, they use strategies to influence fostering processes, especially to protect their foster siblings for the fostering process to be successful, while also having feelings of responsibility for their foster siblings. The findings further suggest that despite the complex nature of the fostering task, professionals should recognise and acknowledge the input of biological children to fostering. It is, therefore, suggested more training should be provided to foster parents to continually include the opinions of their own children in fostering decisions.
- Full Text:
- Authors: Ntshongwana, Zintle
- Date: 2017
- Subjects: Foster children -- South Africa -- Eastern Cape Social work with teenagers -- South Africa -- Eastern Cape Foster parents -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , Degree
- Identifier: http://hdl.handle.net/10353/3033 , vital:28240
- Description: Most research studies focus on foster children or foster parents, there is dearth of research on the impact of fostering on biological children. This aim of this study was to fill the gap in the literature regarding the experiences of biological children sharing a home with foster children. It also investigated how biological children perceive foster care and challenges encountered by children under foster care. This was achieved through a qualitative research approach. The study was conducted at Zwelitsha Township in King Williams Town. Data was collected through semi-structured interviews with thirty biological children of foster parents and ten social workers in practice. Two focus group discussions were held with twenty foster parents. A focus group discussion guide was used in collecting information during the discussions. Purposive sampling was used in the study and data was analysed according to themes. The major findings revealed that fostering has both positive and negative impacts on biological children and the foster family. Biological children find foster care placement as helpful to children whose parents cannot provide care and protection for children. They gain and learn new knowledge through fostering and are happy about their new siblings in the family since they have companionship. On the other hand, minority of biological children were ambivalent about foster care as they were uncertain between altruistic feelings of making a difference in the lives of needy children against the negative outcomes of fostering. One biological child was negative about foster care. This participant did not like the idea of fostering and did not describe any personal positive outcomes resulting from his fostering experiences. The findings revealed that biological children are unable to voice out their views and ideas regarding foster care placement. The findings also revealed that biological children are not passive observers on how fostering influences their daily lives. Instead, they use strategies to influence fostering processes, especially to protect their foster siblings for the fostering process to be successful, while also having feelings of responsibility for their foster siblings. The findings further suggest that despite the complex nature of the fostering task, professionals should recognise and acknowledge the input of biological children to fostering. It is, therefore, suggested more training should be provided to foster parents to continually include the opinions of their own children in fostering decisions.
- Full Text:
Characterisation and cryopreservation of semen from indigenous Namaqua Afrikaner sheep breed, in comparison with Dorper and Dohne Merino breeds
- Authors: Letsoalo, Phutiane Thomas
- Date: 2017
- Subjects: Cryopreservation of organs, tissues, etc Merino sheep Dorper sheep
- Language: English
- Type: Thesis , Masters , Degree
- Identifier: http://hdl.handle.net/10353/4759 , vital:28510
- Description: The aim of this study was to characterise and cryopreserve semen of the indigenous Namaqua Afrikaner breed, and to compare it to that of Dorper and Dohne Merino sheep, whose semen is commercially frozen on a large scale. The study was conducted between January and August 2015. September 2013-born Namaqua Afrikaner (12), Dohne Merino (12) and Dorper (9) rams were used in the study. The rams were kept under kraal conditions with adequate shade, and they received a high protein, high energy diet. Originally it was envisaged to collect semen samples using the artificial vagina (AV) method, which proved to be problematic with the Namaqua Afrikaner rams. Semen samples were subsequently collected twice a week by either AV (Dohne Merino and Dorper) or electro-ejaculation (EE; all three breeds). Macroscopic sperm traits were assessed and sperm concentration determined immediately after collection. Each semen sample was diluted with Triladyl® (1:3) and subsequently frozen in liquid nitrogen vapour in straws. Frozen straws were thawed and evaluated at 7, 30 and 90 days after cryopreservation. A droplet (0.5 ml) from each thawed sample was assessed microscopically for post-thaw motility and percentage live sperm..
- Full Text:
- Authors: Letsoalo, Phutiane Thomas
- Date: 2017
- Subjects: Cryopreservation of organs, tissues, etc Merino sheep Dorper sheep
- Language: English
- Type: Thesis , Masters , Degree
- Identifier: http://hdl.handle.net/10353/4759 , vital:28510
- Description: The aim of this study was to characterise and cryopreserve semen of the indigenous Namaqua Afrikaner breed, and to compare it to that of Dorper and Dohne Merino sheep, whose semen is commercially frozen on a large scale. The study was conducted between January and August 2015. September 2013-born Namaqua Afrikaner (12), Dohne Merino (12) and Dorper (9) rams were used in the study. The rams were kept under kraal conditions with adequate shade, and they received a high protein, high energy diet. Originally it was envisaged to collect semen samples using the artificial vagina (AV) method, which proved to be problematic with the Namaqua Afrikaner rams. Semen samples were subsequently collected twice a week by either AV (Dohne Merino and Dorper) or electro-ejaculation (EE; all three breeds). Macroscopic sperm traits were assessed and sperm concentration determined immediately after collection. Each semen sample was diluted with Triladyl® (1:3) and subsequently frozen in liquid nitrogen vapour in straws. Frozen straws were thawed and evaluated at 7, 30 and 90 days after cryopreservation. A droplet (0.5 ml) from each thawed sample was assessed microscopically for post-thaw motility and percentage live sperm..
- Full Text:
The approaches of traditional healers in the treatment of HIV/ AIDS: the case of Chris Hani District Municipality, Cala, Tsengiwe, Eastern cape, South Africa
- Authors: Mati, Similo
- Date: 2017
- Subjects: People with HIV and AIDS disease -- healers -- South Africa --Eastern Cape Traditional medicine -- South Africa -- Eastern Cape Healers -- South Africa -- Eastern Cape HIV infections -- Treatment -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , Degree
- Identifier: http://hdl.handle.net/10353/5249 , vital:29171
- Description: In South Africa, just like in any other country within the African continent, traditional healing remains an integral part of many communities and this is not just restricted to the rural communities only, as is sometimes assumed. The main aim of this research was to explore the approaches of traditional healers in the treatment of HIV/AIDS in the Chris Hani District Municipality, Eastern Cape. The following research objectives were followed regarding the approaches of traditional healers in the treatment of HIV/AIDS: (i) to assess how traditional healers and people living with HIV/AIDS in Tsengiwe village understand HIV/AIDS, (ii) to investigate the reasons people living with HIV/AIDS consult traditional healers in Tsengiwe village, (iii) to assess Tsengiwe village traditional healers’ treatment strategies for HIV/AIDS, (iv) to establish how traditional healers view their role in the treatment of HIV/AIDS in Tsengiwe village. A qualitative research design was utilized, using in-depth interviews with traditional healers and focus group discussions with caregivers and people living with HIV/AIDS respectively. A type of non-probability sampling known as purposive sampling was used. A total of sixteen (16) participants were interviewed. The findings in this research revealed the following themes: (i) HIV/AIDS is incurable and it is understood by symptoms, (ii) belief system entrenched in traditional healing, (iii) cleansing rituals and traditional medicinal remedies and, (iv) strengthening relations between stakeholders. While traditional healers expressed a willingness to work with biomedical professionals in the management of HIV/AIDS, caregivers and people living with HIV/AIDS preferred going to clinics and hospitals for treatment. Furthermore, people living with HIV/AIDS in this research never admitted to consulting traditional healers for their ailments, only saying that they choose to self-medicate.
- Full Text:
- Authors: Mati, Similo
- Date: 2017
- Subjects: People with HIV and AIDS disease -- healers -- South Africa --Eastern Cape Traditional medicine -- South Africa -- Eastern Cape Healers -- South Africa -- Eastern Cape HIV infections -- Treatment -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , Degree
- Identifier: http://hdl.handle.net/10353/5249 , vital:29171
- Description: In South Africa, just like in any other country within the African continent, traditional healing remains an integral part of many communities and this is not just restricted to the rural communities only, as is sometimes assumed. The main aim of this research was to explore the approaches of traditional healers in the treatment of HIV/AIDS in the Chris Hani District Municipality, Eastern Cape. The following research objectives were followed regarding the approaches of traditional healers in the treatment of HIV/AIDS: (i) to assess how traditional healers and people living with HIV/AIDS in Tsengiwe village understand HIV/AIDS, (ii) to investigate the reasons people living with HIV/AIDS consult traditional healers in Tsengiwe village, (iii) to assess Tsengiwe village traditional healers’ treatment strategies for HIV/AIDS, (iv) to establish how traditional healers view their role in the treatment of HIV/AIDS in Tsengiwe village. A qualitative research design was utilized, using in-depth interviews with traditional healers and focus group discussions with caregivers and people living with HIV/AIDS respectively. A type of non-probability sampling known as purposive sampling was used. A total of sixteen (16) participants were interviewed. The findings in this research revealed the following themes: (i) HIV/AIDS is incurable and it is understood by symptoms, (ii) belief system entrenched in traditional healing, (iii) cleansing rituals and traditional medicinal remedies and, (iv) strengthening relations between stakeholders. While traditional healers expressed a willingness to work with biomedical professionals in the management of HIV/AIDS, caregivers and people living with HIV/AIDS preferred going to clinics and hospitals for treatment. Furthermore, people living with HIV/AIDS in this research never admitted to consulting traditional healers for their ailments, only saying that they choose to self-medicate.
- Full Text:
- «
- ‹
- 1
- ›
- »