Zooming in: an ethnographic study of visual journalism for smartphones - journalistic roles and routines at South Africa’s largest graphics unit, Graphics24
- Authors: Gouws, Andries Jacobus
- Date: 2018
- Subjects: Journalism -- Technological innovations -- South Africa , Smartphones , Visual communication -- Digital techniques , News Web sites -- South Africa , Online journalism -- South Africa , Information visualization , Graphic arts , Graphics24 , Netwerk24
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10962/63154 , vital:28368
- Description: This study examines the changing roles of graphics journalists in the digital era at Graphics24, the largest information graphics newsroom in South Africa, in the context of their work for Netwerk24, an online news site published in Afrikaans with a strong focus on mobile-first news. The study examines the discursive construction of these new journalistic roles in the digital era where even the core conceptualisation of what journalism is, is being re-examined. It considers external factors affecting the discourse of change, drawing on a hierarchy of influences analytical model, as well as norms specific to the creation of information graphics. Data for this study was gathered by using ethnographic immersion and semi-structured interviews. This study specifically looks at graphics journalists working in a mobile-first environment, and how the pressures of producing information graphics for consumption on smartphones affects their roles. Evidence of two widely differing discourses in the Graphics24 and Netwerk24 newsrooms was found. Visual journalists in this study have created a discourse around being distinct “service providers”, rather than mobile-first journalists, who do not see the need for full integration in the fast-paced mobile news environment of Netwerk24. Word-centric journalists have, by contrast, created a mobile-first discourse. They experience the separateness of the graphics team as a barrier that impedes the creation of good information graphics for mobile phone consumption. Although this is a very localised study in a very particular context, this study contributes to broader thinking in what is a very under-researched field: The changing roles of visual journalists in the digital era and the discursive construction of these roles. The study suggests that even in the digital era where the definition of newsrooms has become much more fluid and less fixed physically, ethnographic methods can still offer a meaningful way to explore journalistic roles.
- Full Text:
- Authors: Gouws, Andries Jacobus
- Date: 2018
- Subjects: Journalism -- Technological innovations -- South Africa , Smartphones , Visual communication -- Digital techniques , News Web sites -- South Africa , Online journalism -- South Africa , Information visualization , Graphic arts , Graphics24 , Netwerk24
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10962/63154 , vital:28368
- Description: This study examines the changing roles of graphics journalists in the digital era at Graphics24, the largest information graphics newsroom in South Africa, in the context of their work for Netwerk24, an online news site published in Afrikaans with a strong focus on mobile-first news. The study examines the discursive construction of these new journalistic roles in the digital era where even the core conceptualisation of what journalism is, is being re-examined. It considers external factors affecting the discourse of change, drawing on a hierarchy of influences analytical model, as well as norms specific to the creation of information graphics. Data for this study was gathered by using ethnographic immersion and semi-structured interviews. This study specifically looks at graphics journalists working in a mobile-first environment, and how the pressures of producing information graphics for consumption on smartphones affects their roles. Evidence of two widely differing discourses in the Graphics24 and Netwerk24 newsrooms was found. Visual journalists in this study have created a discourse around being distinct “service providers”, rather than mobile-first journalists, who do not see the need for full integration in the fast-paced mobile news environment of Netwerk24. Word-centric journalists have, by contrast, created a mobile-first discourse. They experience the separateness of the graphics team as a barrier that impedes the creation of good information graphics for mobile phone consumption. Although this is a very localised study in a very particular context, this study contributes to broader thinking in what is a very under-researched field: The changing roles of visual journalists in the digital era and the discursive construction of these roles. The study suggests that even in the digital era where the definition of newsrooms has become much more fluid and less fixed physically, ethnographic methods can still offer a meaningful way to explore journalistic roles.
- Full Text:
‘I don’t belong nowhere really’: the figure of the London migrant in Dan Jacobson’s ‘A Long Way from London’ and Jean Rhys’s ‘Let Them Call It Jazz’
- Naidu, Samantha, Thorpe, Andrea
- Authors: Naidu, Samantha , Thorpe, Andrea
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/68422 , vital:29254 , https://doi.org/10.1080/10131752.2018.1461477
- Description: Publisher version , In this article we compare and contrast the figure of the migrant, central to Dan Jacobson’s short story ‘A Long Way from London’ ([1953] 1958. A Long Way from London and other stories. London: Weidenfeld & Nicholson), and to Jean Rhys’s short story ‘Let Them Call It Jazz’ ([1962] 1987. The Collected Stories. New York: Norton), both of which are set in London in the early to mid-twentieth century. The main argument is that these figures, as migrants in London from South Africa and the Caribbean respectively, similarly occupy a liminal space despite stark differences in class, race and gender. In both stories this liminal space is described through evocations of London as a hostile diasporic space, lacking in hospitality, and experienced by the migrant figure as a place of confinement and incarceration. Also, both stories utilize the technique of silence or lacunae when it comes to issues of specific discrimination and abuse, such as racism or sexual exploitation. For the purposes of comparison, the character Manwera from ‘A Long Way from London’ and, Selina, the protagonist of ‘Let Them Call It Jazz’, are selected for analysis. Particularly, their respective responses (Manwera’s pride and dignity, and Selina’s recovery after a breakdown, and her musical talent) to the exigencies of migration are suggestive of ‘adaptive strength’ (Steve Vertovec and Robin Cohen [1999] 2001. Migration, Diasporas and Transnationalism. Cheltenham and Northampton MA: Elgar Reference Collection, xviii), a common feature in transnational literature which attempts to celebrate liminality and multiplicity as key characteristics of a transnational subjectivity. In addition, the protagonist of ‘A Long Way from London’, Arthur, offers a contrast to Manwera and Selina, not only because of race and class, but because he is depicted as having adapted to and assimilated into British culture, while being strangely detached from and ambivalent about both homeland and diasporic home. Varying forms of adaptive strength are portrayed in both stories, but they close with intimations of bleak futures for the migrant figures. The essay thus concludes with the observation that in these two stories, the figure of the London migrant is rendered as facing further grave challenges, and that all three figures ‘belong nowhere’ (Rhys [1962] 1987 Rhys, Jean. [1962] 1987. The Collected Stories. New York: Norton. [Google Scholar] , 175).
- Full Text: false
- Authors: Naidu, Samantha , Thorpe, Andrea
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/68422 , vital:29254 , https://doi.org/10.1080/10131752.2018.1461477
- Description: Publisher version , In this article we compare and contrast the figure of the migrant, central to Dan Jacobson’s short story ‘A Long Way from London’ ([1953] 1958. A Long Way from London and other stories. London: Weidenfeld & Nicholson), and to Jean Rhys’s short story ‘Let Them Call It Jazz’ ([1962] 1987. The Collected Stories. New York: Norton), both of which are set in London in the early to mid-twentieth century. The main argument is that these figures, as migrants in London from South Africa and the Caribbean respectively, similarly occupy a liminal space despite stark differences in class, race and gender. In both stories this liminal space is described through evocations of London as a hostile diasporic space, lacking in hospitality, and experienced by the migrant figure as a place of confinement and incarceration. Also, both stories utilize the technique of silence or lacunae when it comes to issues of specific discrimination and abuse, such as racism or sexual exploitation. For the purposes of comparison, the character Manwera from ‘A Long Way from London’ and, Selina, the protagonist of ‘Let Them Call It Jazz’, are selected for analysis. Particularly, their respective responses (Manwera’s pride and dignity, and Selina’s recovery after a breakdown, and her musical talent) to the exigencies of migration are suggestive of ‘adaptive strength’ (Steve Vertovec and Robin Cohen [1999] 2001. Migration, Diasporas and Transnationalism. Cheltenham and Northampton MA: Elgar Reference Collection, xviii), a common feature in transnational literature which attempts to celebrate liminality and multiplicity as key characteristics of a transnational subjectivity. In addition, the protagonist of ‘A Long Way from London’, Arthur, offers a contrast to Manwera and Selina, not only because of race and class, but because he is depicted as having adapted to and assimilated into British culture, while being strangely detached from and ambivalent about both homeland and diasporic home. Varying forms of adaptive strength are portrayed in both stories, but they close with intimations of bleak futures for the migrant figures. The essay thus concludes with the observation that in these two stories, the figure of the London migrant is rendered as facing further grave challenges, and that all three figures ‘belong nowhere’ (Rhys [1962] 1987 Rhys, Jean. [1962] 1987. The Collected Stories. New York: Norton. [Google Scholar] , 175).
- Full Text: false
‘There is nothing to hold onto here’: complicity and vulnerability in Gavin Krastin’s On Seeing Red and Other Fantasies (2015)
- Authors: Smit, Sonja
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/156352 , vital:39981 , DOI: 10.1080/10137548.2018.1553626
- Description: In this article, I analyse some of the ways in which Gavin Krastin’s On Seeing Red and Other Fantasies (2015) engages with outrage and protest in a self-reflexive way. The idea of art as means to question and institute change in society, is contentious and my discussion here focuses on how forms of resistance, are easily subsumed within a capitalist context.
- Full Text:
- Authors: Smit, Sonja
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/156352 , vital:39981 , DOI: 10.1080/10137548.2018.1553626
- Description: In this article, I analyse some of the ways in which Gavin Krastin’s On Seeing Red and Other Fantasies (2015) engages with outrage and protest in a self-reflexive way. The idea of art as means to question and institute change in society, is contentious and my discussion here focuses on how forms of resistance, are easily subsumed within a capitalist context.
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‘They tell you about the risks’: Exploring sources of sexuality education among very young adolescents in rural Mpumalanga
- Essop, R, Tolla, T, Lynch, Ingrid, Mokoae, M
- Authors: Essop, R , Tolla, T , Lynch, Ingrid , Mokoae, M
- Date: 2018
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/453282 , vital:75242 , https://hdl.handle.net/10520/EJC-10de5bde91
- Description: Early adolescence (ages 10 - 14) is a crucial stage of development. The importance of early intervention in improving adolescent sexual and reproductive health (SRH) is increasingly acknowledged. Yet, school-based sexuality education largely focuses on older adolescents, leaving very young adolescents to contend with conflicting information from different sources. This study responds to the need for contextually nuanced research with very young adolescents, which can inform policy and programmes aimed at improving their SRH outcomes.
- Full Text:
- Authors: Essop, R , Tolla, T , Lynch, Ingrid , Mokoae, M
- Date: 2018
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/453282 , vital:75242 , https://hdl.handle.net/10520/EJC-10de5bde91
- Description: Early adolescence (ages 10 - 14) is a crucial stage of development. The importance of early intervention in improving adolescent sexual and reproductive health (SRH) is increasingly acknowledged. Yet, school-based sexuality education largely focuses on older adolescents, leaving very young adolescents to contend with conflicting information from different sources. This study responds to the need for contextually nuanced research with very young adolescents, which can inform policy and programmes aimed at improving their SRH outcomes.
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“Don’t forget to be awesome”: the role of social learning as a component of belonging in virtual communities: a case study of the Youtube fan community “Nerdfighteria”
- Authors: Steenkamp, Elri Colleen
- Date: 2018
- Subjects: Nerdfighteria (Online) , Social learning , Online social networks , Belonging (Social psychology) , Communities of practice , YouTube (Firm)
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10962/63753 , vital:28484
- Description: The growth of the Internet has allowed fans who consume various media products, to interact and convene with other who share similar interests in online fan communities. Historically the study of fans has focused on pleasure and enjoyment as the main motivating factors why individual fans join, stay and participate in fan communities. This study, however, suggests that learning as a component of belonging has been underestimated within contemporary fan studies. Close examination of the literature of fan studies and the social practices of online fan communities reveal that these spaces may serve as fertile spaces for learning and the sharing of knowledge. Daily learning occurs within multiple spheres, including personal interests, peer culture, and academic content; all elements which can be found within fan communities. This study used the social learning theory “communities of practice” (CoP) model developed by Wenger (1998) to understand of this element of learning and knowledge sharing that seems to take places within fan communities. This study explores learning as a component of belonging to online fan communities by using the fan community of the YouTube personalities Vlogbrothers, which has named itself Nerdfighteria, as a case study. Through a qualitative research approach, which includes participation observation methods and qualitative interviews, this thesis has analysed the fan community Nerdfighteria, and used two Nerdfighter fan Facebook groups, the global NERDFIGHTEIRIA and local Nerdfighters South Africa, as case studies to evaluate whether the elements of learning taking place within these spaces serves as a motivating factor for belonging and participation. The results of this research support the idea that learning plays a role within the fan community Nerdfighteria and thus that it functions as a CoP. Fans within the global NERDFIGHTERIA Facebook group use this fan space to discuss and debate content related to their media of choice; thereby learning and acquiring knowledge as a CoP. The Nerdfighters South Africa Facebook group, despite the learning potential, fails to function as a CoP because it is no longer functionally allows for shared learning. Online fan communities, this research found, have the potential to serve as functioning communities of practice (CoP) only if they embody the characteristics and practicalities consistent with a learning space. Overall these fan groups may be categorised as communities of interests but sub-sections within these communities fit the criteria of a community of practice due to the kind of learning that is taking place. This research supports an alternative, yet promising, approach to the study of fan online communities which prioritises learning.
- Full Text:
- Authors: Steenkamp, Elri Colleen
- Date: 2018
- Subjects: Nerdfighteria (Online) , Social learning , Online social networks , Belonging (Social psychology) , Communities of practice , YouTube (Firm)
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10962/63753 , vital:28484
- Description: The growth of the Internet has allowed fans who consume various media products, to interact and convene with other who share similar interests in online fan communities. Historically the study of fans has focused on pleasure and enjoyment as the main motivating factors why individual fans join, stay and participate in fan communities. This study, however, suggests that learning as a component of belonging has been underestimated within contemporary fan studies. Close examination of the literature of fan studies and the social practices of online fan communities reveal that these spaces may serve as fertile spaces for learning and the sharing of knowledge. Daily learning occurs within multiple spheres, including personal interests, peer culture, and academic content; all elements which can be found within fan communities. This study used the social learning theory “communities of practice” (CoP) model developed by Wenger (1998) to understand of this element of learning and knowledge sharing that seems to take places within fan communities. This study explores learning as a component of belonging to online fan communities by using the fan community of the YouTube personalities Vlogbrothers, which has named itself Nerdfighteria, as a case study. Through a qualitative research approach, which includes participation observation methods and qualitative interviews, this thesis has analysed the fan community Nerdfighteria, and used two Nerdfighter fan Facebook groups, the global NERDFIGHTEIRIA and local Nerdfighters South Africa, as case studies to evaluate whether the elements of learning taking place within these spaces serves as a motivating factor for belonging and participation. The results of this research support the idea that learning plays a role within the fan community Nerdfighteria and thus that it functions as a CoP. Fans within the global NERDFIGHTERIA Facebook group use this fan space to discuss and debate content related to their media of choice; thereby learning and acquiring knowledge as a CoP. The Nerdfighters South Africa Facebook group, despite the learning potential, fails to function as a CoP because it is no longer functionally allows for shared learning. Online fan communities, this research found, have the potential to serve as functioning communities of practice (CoP) only if they embody the characteristics and practicalities consistent with a learning space. Overall these fan groups may be categorised as communities of interests but sub-sections within these communities fit the criteria of a community of practice due to the kind of learning that is taking place. This research supports an alternative, yet promising, approach to the study of fan online communities which prioritises learning.
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“Forgetting Ntaba kaNdoda”: reciting performative memories at the Ntaba kaNdoda Monument
- Authors: Mama, Luthando Vukile James
- Date: 2018
- Subjects: Memorialization , Collective memory in art , Memorials in art , Memorials -- South Africa -- Dimbaza , Imperialism in art , Ntaba kaNdoda Monument (Dimbaza, South Africa)
- Language: English
- Type: text , Thesis , Masters , MFA
- Identifier: http://hdl.handle.net/10962/63866 , vital:28499
- Description: “Forgetting Ntaba kaNdoda”: Reciting Performative Memories at the Ntaba kaNdoda Monument serves as a theoretical examination of the Ntaba kaNdoda Monument as a commemorative marker. My mini-thesis unpacks the notions of memory and performative memorialisation at a nationalist memorial in the former Ciskei by examining the concepts of place, memory and memorialisation, which are theoretically integral in my professional practice. This research initiates an investigation into the effects on memory in a situation where the construction of the Monument disrupted an efficacious memorialisation by the communities of Ntaba kaNdoda. In my accompanying MFA exhibition Forgetting Ntaba kaNdoda, I explore notions of place, memory and memorialisation through installations of a variety of photographic processes that are based on what I call ‘de-monumental’ and performative monuments (Widrich2014). The written component of my MFA submission relates directly to my professional art practice, developing and situating it within a relevant context. In my mini-thesis, I consider photographers working with notions of place, memory and memorialisation. Lebohang Kganye and Nassim Rouchiche’s works retrace and recall past memory in the present, while David Goldblatt and Cedric Nunn, who have photographed the Ntaba kaNdoda Monument, point the viewer to the values and histories of the communities most affected by colonialism and apartheid. These photographers’ works operate as mnemonic devices that seek to translate a lived experience at a particular place. I use Widrich’s (2009; 2014) conception of “performative monuments”, Lippard’s (1997) “sense of place” and Nora’s (1989) “lieu[x] de mémoire” and “milieux de mémoire” in approaching my professional art practice and my research into the Ntaba kaNdoda memorial. Using these entwining nodes of theories in formulating what I term ‘demonumentalisation’ in my photography practice at the Ntaba kaNdoda Monument, my photography functions as both performative memorialisation and de-monumentalisation. Remembrance, using photography as a vehicle to represent this notion at Ntaba kaNdoda, transcends the materiality of the Monument. My exhibition, in conjunction with this mini-thesis, therefore reframes and reconfigures theNtaba kaNdoda Monument as a multiplex memory place.
- Full Text:
- Authors: Mama, Luthando Vukile James
- Date: 2018
- Subjects: Memorialization , Collective memory in art , Memorials in art , Memorials -- South Africa -- Dimbaza , Imperialism in art , Ntaba kaNdoda Monument (Dimbaza, South Africa)
- Language: English
- Type: text , Thesis , Masters , MFA
- Identifier: http://hdl.handle.net/10962/63866 , vital:28499
- Description: “Forgetting Ntaba kaNdoda”: Reciting Performative Memories at the Ntaba kaNdoda Monument serves as a theoretical examination of the Ntaba kaNdoda Monument as a commemorative marker. My mini-thesis unpacks the notions of memory and performative memorialisation at a nationalist memorial in the former Ciskei by examining the concepts of place, memory and memorialisation, which are theoretically integral in my professional practice. This research initiates an investigation into the effects on memory in a situation where the construction of the Monument disrupted an efficacious memorialisation by the communities of Ntaba kaNdoda. In my accompanying MFA exhibition Forgetting Ntaba kaNdoda, I explore notions of place, memory and memorialisation through installations of a variety of photographic processes that are based on what I call ‘de-monumental’ and performative monuments (Widrich2014). The written component of my MFA submission relates directly to my professional art practice, developing and situating it within a relevant context. In my mini-thesis, I consider photographers working with notions of place, memory and memorialisation. Lebohang Kganye and Nassim Rouchiche’s works retrace and recall past memory in the present, while David Goldblatt and Cedric Nunn, who have photographed the Ntaba kaNdoda Monument, point the viewer to the values and histories of the communities most affected by colonialism and apartheid. These photographers’ works operate as mnemonic devices that seek to translate a lived experience at a particular place. I use Widrich’s (2009; 2014) conception of “performative monuments”, Lippard’s (1997) “sense of place” and Nora’s (1989) “lieu[x] de mémoire” and “milieux de mémoire” in approaching my professional art practice and my research into the Ntaba kaNdoda memorial. Using these entwining nodes of theories in formulating what I term ‘demonumentalisation’ in my photography practice at the Ntaba kaNdoda Monument, my photography functions as both performative memorialisation and de-monumentalisation. Remembrance, using photography as a vehicle to represent this notion at Ntaba kaNdoda, transcends the materiality of the Monument. My exhibition, in conjunction with this mini-thesis, therefore reframes and reconfigures theNtaba kaNdoda Monument as a multiplex memory place.
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“Having it all”?’: ”?:(re) examining conspicuous consumption and pernicious masculinities in South African chick-lit
- Authors: Spencer, Lynda G
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/138798 , vital:37673 , https://0-hdl.handle.net.wam.seals.ac.za/10520/EJC-13f7e3010
- Description: A number of South African women writers have taken up chick-lit as a form of writing that enables them to reflect on the experiences of the modern woman in post-apartheid South Africa. The protagonists portrayed in chick-lit narratives occupy ambiguous positions: they may have benefitted from feminist politics, which has opened new possibilities for them; however, underlying this emancipation is an implicit collusion with patriarchy. Chick-lit refuses to offer a clear-cut construct of women’s lives; instead, it suggests a problematic terrain that is inherently ambiguous and contradictory, simultaneously empowering and oppressing women. It depicts a realistic world where contemporary women critique patriarchy and attempt to break free of its stranglehold by finding new methods of self-realisation. In this article, I argue that as a genre chick-lit offers a space of recognition and reflection for women who share a similar world view and emotional knowledge that stems from a common historical experience.
- Full Text:
- Authors: Spencer, Lynda G
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/138798 , vital:37673 , https://0-hdl.handle.net.wam.seals.ac.za/10520/EJC-13f7e3010
- Description: A number of South African women writers have taken up chick-lit as a form of writing that enables them to reflect on the experiences of the modern woman in post-apartheid South Africa. The protagonists portrayed in chick-lit narratives occupy ambiguous positions: they may have benefitted from feminist politics, which has opened new possibilities for them; however, underlying this emancipation is an implicit collusion with patriarchy. Chick-lit refuses to offer a clear-cut construct of women’s lives; instead, it suggests a problematic terrain that is inherently ambiguous and contradictory, simultaneously empowering and oppressing women. It depicts a realistic world where contemporary women critique patriarchy and attempt to break free of its stranglehold by finding new methods of self-realisation. In this article, I argue that as a genre chick-lit offers a space of recognition and reflection for women who share a similar world view and emotional knowledge that stems from a common historical experience.
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“I slipped into the pages of a book”: intertextuality and literary solidarities in South African writing about London
- Authors: Thorpe, Andrea
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/68402 , vital:29252 , https://doi.org/10.1080/17533171.2018.1482882
- Description: Publisher version , In this article, I argue that London plays a dual role in South African writing, as a “real” city at a particular moment in history, and as a textual, imaginative space. For many South African writers, London comes to stand metonymically for English culture and literature even if their attitude toward Englishness and Empire may be one of ambivalent critique. The intertexts invoked in South African representations of London forge literary solidarities, and foreground belated postcolonial engagements with modernity that are significantly displaced from the “margin” to the “center” of modernism (and Empire) itself.
- Full Text: false
- Authors: Thorpe, Andrea
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/68402 , vital:29252 , https://doi.org/10.1080/17533171.2018.1482882
- Description: Publisher version , In this article, I argue that London plays a dual role in South African writing, as a “real” city at a particular moment in history, and as a textual, imaginative space. For many South African writers, London comes to stand metonymically for English culture and literature even if their attitude toward Englishness and Empire may be one of ambivalent critique. The intertexts invoked in South African representations of London forge literary solidarities, and foreground belated postcolonial engagements with modernity that are significantly displaced from the “margin” to the “center” of modernism (and Empire) itself.
- Full Text: false
“Telling freedom” or “telling the spades back home how to behave”? re-examining Peter Abrahams’s writing in London
- Authors: Thorpe, Andrea
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/68412 , vital:29253 , https://dx.doi.org/10.4314/eia.v45i1.3
- Description: Publisher version , This article considers the notable dearth of recent scholarship on Peter Abrahams’s writing in the context of his exile and his complex, shifting ideological self-positioning throughout his career. To attempt to address this lacuna in South African literary criticism, and to partially explain why Abrahams has been under-researched, I look at key moments during his early career, including the publication of Dark Testament (1942), Song of the City (1945) and Return to Goli (1953). By focusing on texts by Abrahams that were published during his time in London, I also wish to address the significance of the city in the history of South African literature, and in African anti-colonial and anti-racist thinking more broadly.
- Full Text: false
- Authors: Thorpe, Andrea
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/68412 , vital:29253 , https://dx.doi.org/10.4314/eia.v45i1.3
- Description: Publisher version , This article considers the notable dearth of recent scholarship on Peter Abrahams’s writing in the context of his exile and his complex, shifting ideological self-positioning throughout his career. To attempt to address this lacuna in South African literary criticism, and to partially explain why Abrahams has been under-researched, I look at key moments during his early career, including the publication of Dark Testament (1942), Song of the City (1945) and Return to Goli (1953). By focusing on texts by Abrahams that were published during his time in London, I also wish to address the significance of the city in the history of South African literature, and in African anti-colonial and anti-racist thinking more broadly.
- Full Text: false
“The Bag Is My Home”: recycling “China Bags” in contemporary African art
- Authors: Cheng, Yeng
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/145676 , vital:38457 , https://0-doi.org.wam.seals.ac.za/10.1162/afar_a_00400
- Description: Frequently used as mobile storage containers or baggage by migrants and traders moving across borders, the mesh bag made of red, blue, and white polypropylene fibers has become a prominent element of African visual culture. This light, strong, and affordable woven bag, often referred to as “China bag” or “Chinese tote,”1 features prominently in recent artistic practices by African artists such as Nobukho Nqaba, Dan Halter, and Gerald Machona. In this essay I examine how these artistic interventions using photography, installation, video, and performance, circulating in galleries, museums, and the streets, contribute to sociological discussions about the ways in which emerging trajectories, relationships, and identities are perceived and debated in the context of the global South.
- Full Text:
- Authors: Cheng, Yeng
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/145676 , vital:38457 , https://0-doi.org.wam.seals.ac.za/10.1162/afar_a_00400
- Description: Frequently used as mobile storage containers or baggage by migrants and traders moving across borders, the mesh bag made of red, blue, and white polypropylene fibers has become a prominent element of African visual culture. This light, strong, and affordable woven bag, often referred to as “China bag” or “Chinese tote,”1 features prominently in recent artistic practices by African artists such as Nobukho Nqaba, Dan Halter, and Gerald Machona. In this essay I examine how these artistic interventions using photography, installation, video, and performance, circulating in galleries, museums, and the streets, contribute to sociological discussions about the ways in which emerging trajectories, relationships, and identities are perceived and debated in the context of the global South.
- Full Text:
“The scales were peeled from my eyes”: South African academics coming to consciousness to become agents of change
- Vincent, Louise, Idahosa, Grace E
- Authors: Vincent, Louise , Idahosa, Grace E
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/141759 , vital:38002 , DOI: 10.18848/2327-0055/cgp/v15i04/13-28
- Description: For postcolonial societies, addressing the impact of the previous oppressive system in a bid to attain equity and social justice necessitates transformation in various spheres and sectors of society. As cradles of learning, research, and knowledge development, higher education institutions are one such sphere with a particular duty to contribute to, and embody, social transformation. However, almost 25 years after the country’s first democratic elections, the institutional cultures and structures of many South African universities still bear the imprimatur of past inequities. Existing research suggests that the success of transformation policies is influenced by the extent to which individual staff members exercise agency to effect transformative practices. But what determines whether an individual becomes an agent of change? This paper draws on the experiences of ten academic staff members who have taken actions that can be said to have contributed to shifting in important ways relations and/or practices at one university in South Africa. It adopts a hermeneutic phenomenological lens to understand the lived experiences of participants of having agency and undertaking transformative actions.
- Full Text:
- Authors: Vincent, Louise , Idahosa, Grace E
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/141759 , vital:38002 , DOI: 10.18848/2327-0055/cgp/v15i04/13-28
- Description: For postcolonial societies, addressing the impact of the previous oppressive system in a bid to attain equity and social justice necessitates transformation in various spheres and sectors of society. As cradles of learning, research, and knowledge development, higher education institutions are one such sphere with a particular duty to contribute to, and embody, social transformation. However, almost 25 years after the country’s first democratic elections, the institutional cultures and structures of many South African universities still bear the imprimatur of past inequities. Existing research suggests that the success of transformation policies is influenced by the extent to which individual staff members exercise agency to effect transformative practices. But what determines whether an individual becomes an agent of change? This paper draws on the experiences of ten academic staff members who have taken actions that can be said to have contributed to shifting in important ways relations and/or practices at one university in South Africa. It adopts a hermeneutic phenomenological lens to understand the lived experiences of participants of having agency and undertaking transformative actions.
- Full Text:
“Two loves that I have, of comfort and despair”: the drama and architecture of Shakespeare’s sonnets
- Authors: van Wyk Smith, Malvern
- Date: 2018
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/453963 , vital:75301 , https://doi.org/10.1080/10130950.2007.9674885
- Description: This essay was delivered as the annual Shakespeare Birthday Lecture of the Shakespeare Society of Southern Africa in Grahamstown in 2017. It argues that Shakespeare’s predisposition to recognise and develop the dramatic moment turned his initial interest in the normally static and contemplative sonnet into the components of something more like an oratorio of dramatic variations in sonnet form. The author focuses on four sonnets (18, 30, 116, 129) that stake out the thematic and structural range of the whole sequence, and discusses how the poet explores the compositional and indeed architectonic possibilities inherent in the principles and procedures of pursuing ‘variations on a theme’. The sonnets can thus be understood as an ambitious proto-baroque diptych, the two halves of which were to present an elaborate allegory of love versus lust, trust versus deceit, and innocence versus experience.
- Full Text:
“Two loves that I have, of comfort and despair”: the drama and architecture of Shakespeare’s sonnets
- Authors: van Wyk Smith, Malvern
- Date: 2018
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/453963 , vital:75301 , https://doi.org/10.1080/10130950.2007.9674885
- Description: This essay was delivered as the annual Shakespeare Birthday Lecture of the Shakespeare Society of Southern Africa in Grahamstown in 2017. It argues that Shakespeare’s predisposition to recognise and develop the dramatic moment turned his initial interest in the normally static and contemplative sonnet into the components of something more like an oratorio of dramatic variations in sonnet form. The author focuses on four sonnets (18, 30, 116, 129) that stake out the thematic and structural range of the whole sequence, and discusses how the poet explores the compositional and indeed architectonic possibilities inherent in the principles and procedures of pursuing ‘variations on a theme’. The sonnets can thus be understood as an ambitious proto-baroque diptych, the two halves of which were to present an elaborate allegory of love versus lust, trust versus deceit, and innocence versus experience.
- Full Text:
“We are white”: oral tradition, documented history and molecular biology of Xhosa clans descended from non-African forebears and their expression of this ancestry through the idiom of ancestor religion
- Authors: Hayward, Janet M
- Date: 2018
- Subjects: Clans -- South Africa -- Eastern Cape , Patrilineal kinship -- South Africa -- Eastern Cape , Xhosa (African people) -- Genealogy , Oral history -- South Africa -- Eastern Cape , Genetic genealogy , Xhosa (African people) -- Rites and ceremonies , Xhosa (African people) -- Race identity
- Language: English
- Type: text , Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/62939 , vital:28312
- Description: Xhosa clan membership is symbolised by a clan-name (isiduko) and passed along the male line from father to son. This social indicator has a biological counterpart in Y chromosome DNA that passes through successive generations in the patriline. Both relate specifically to a distant patrilineal forebear or apical ancestor. The present study has involved the collection and documentation of oral-historical information relating to the descent of certain Cape Nguni clans from non-African forebears and (where possible) a review of documented accounts of such origins. The research has also included collection of buccal cells from male research participants and analysis of their Y chromosome DNA. This method indicates whether a man’s patrilineal forebear lived in Africa. Otherwise, it indicates the broad geographical region from which he originated, hence providing an additional, independent source of information relating to ancestry that can confirm or challenge claims made based on oral history. Ethnographic research into the performance of distinctive ancestor rituals by clan members explores the continuing relevance of foreign ancestry in the contemporary context of rural communities in the Eastern Cape, South Africa. The study heeds calls for the decolonisation of scholarship in various ways: methodologically, through transdisciplinary research; ontologically, by questioning the utility of the nature: culture and related dichotomies; and epistemologically, because instead of relying entirely on the western academic tradition, it takes account of other modes of knowledge production. In rejection of the notion that only one side of history is true, it records multiple voices – those of the powerful but also the ordinary. The study deals with race and racial identification, but confirms the superficiality of these constructed differences by offering evidence of their submergence in the unifying power of kinship and descent.
- Full Text:
- Authors: Hayward, Janet M
- Date: 2018
- Subjects: Clans -- South Africa -- Eastern Cape , Patrilineal kinship -- South Africa -- Eastern Cape , Xhosa (African people) -- Genealogy , Oral history -- South Africa -- Eastern Cape , Genetic genealogy , Xhosa (African people) -- Rites and ceremonies , Xhosa (African people) -- Race identity
- Language: English
- Type: text , Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/62939 , vital:28312
- Description: Xhosa clan membership is symbolised by a clan-name (isiduko) and passed along the male line from father to son. This social indicator has a biological counterpart in Y chromosome DNA that passes through successive generations in the patriline. Both relate specifically to a distant patrilineal forebear or apical ancestor. The present study has involved the collection and documentation of oral-historical information relating to the descent of certain Cape Nguni clans from non-African forebears and (where possible) a review of documented accounts of such origins. The research has also included collection of buccal cells from male research participants and analysis of their Y chromosome DNA. This method indicates whether a man’s patrilineal forebear lived in Africa. Otherwise, it indicates the broad geographical region from which he originated, hence providing an additional, independent source of information relating to ancestry that can confirm or challenge claims made based on oral history. Ethnographic research into the performance of distinctive ancestor rituals by clan members explores the continuing relevance of foreign ancestry in the contemporary context of rural communities in the Eastern Cape, South Africa. The study heeds calls for the decolonisation of scholarship in various ways: methodologically, through transdisciplinary research; ontologically, by questioning the utility of the nature: culture and related dichotomies; and epistemologically, because instead of relying entirely on the western academic tradition, it takes account of other modes of knowledge production. In rejection of the notion that only one side of history is true, it records multiple voices – those of the powerful but also the ordinary. The study deals with race and racial identification, but confirms the superficiality of these constructed differences by offering evidence of their submergence in the unifying power of kinship and descent.
- Full Text:
A moderate elevation in [CO 2] results in potential hypervirulence on SABBIErica
- Gallagher, Sean, Hill, Jaclyn M, Murugan, N, Botha, Christiaan E J
- Authors: Gallagher, Sean , Hill, Jaclyn M , Murugan, N , Botha, Christiaan E J
- Date: 2017
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/68835 , vital:29329 , https://doi.org/10.1016/j.sajb.2017.10.010
- Description: The Russian Wheat Aphid (Diuraphis noxia Kurdjumov, 1913) (RWA) is a serious pest of grain crops and is of considerable concern in South Africa, particularly in terms of barley grown specifically for the brewing industry. This paper highlights the effect of a small (50 ppm) increase in [CO2] on the growth rate of the four South African RWA biotypes on the SABBIErica barley cultivar. Controlled environment experiments revealed that the colony growth rate for RWASA4 was significantly lower than SA1 under ambient conditions as well as significantly lower than SA1, SA2 or SA3 under elevated CO2 conditions. The unexpected difference suggested an atypical, non-preferential feeding habit on SABBIErica, for RWASA4. The small RWASA4 colonies inflicted similar morphological damage to the significantly larger RWASA1 – RWASA3 biotype populations — indicative of potential hypervirulence under elevated CO2. The continuous feeding of RWASA biotypes causes damage to the transport system as well as substantial, catastrophic damage to mesophyll chloroplasts as well as mitochondria within the host plant's leaves. The TEM study revealed evidence of sequential/systematic degeneration of chloroplasts and mitochondria with continued aphid feeding, which we suggest is an indication of potential emergent hypervirulence under elevated CO2 conditions.
- Full Text: false
- Authors: Gallagher, Sean , Hill, Jaclyn M , Murugan, N , Botha, Christiaan E J
- Date: 2017
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/68835 , vital:29329 , https://doi.org/10.1016/j.sajb.2017.10.010
- Description: The Russian Wheat Aphid (Diuraphis noxia Kurdjumov, 1913) (RWA) is a serious pest of grain crops and is of considerable concern in South Africa, particularly in terms of barley grown specifically for the brewing industry. This paper highlights the effect of a small (50 ppm) increase in [CO2] on the growth rate of the four South African RWA biotypes on the SABBIErica barley cultivar. Controlled environment experiments revealed that the colony growth rate for RWASA4 was significantly lower than SA1 under ambient conditions as well as significantly lower than SA1, SA2 or SA3 under elevated CO2 conditions. The unexpected difference suggested an atypical, non-preferential feeding habit on SABBIErica, for RWASA4. The small RWASA4 colonies inflicted similar morphological damage to the significantly larger RWASA1 – RWASA3 biotype populations — indicative of potential hypervirulence under elevated CO2. The continuous feeding of RWASA biotypes causes damage to the transport system as well as substantial, catastrophic damage to mesophyll chloroplasts as well as mitochondria within the host plant's leaves. The TEM study revealed evidence of sequential/systematic degeneration of chloroplasts and mitochondria with continued aphid feeding, which we suggest is an indication of potential emergent hypervirulence under elevated CO2 conditions.
- Full Text: false
Dridex: Analysis of the traffic and automatic generation of IOCs
- Rudman, Lauren, Irwin, Barry V W
- Authors: Rudman, Lauren , Irwin, Barry V W
- Date: 2016
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/429525 , vital:72619 , https://ieeexplore.ieee.org/abstract/document/7802932
- Description: In this paper we present a framework that generates network Indicators of Compromise (IOC) automatically from a malware sample after dynamic runtime analysis. The framework addresses the limitations of manual Indicator of Compromise generation and utilises sandbox environment to perform the malware analysis in. We focus on the generation of network based IOCs from captured traffic files (PCAPs) generated by the dynamic malware analysis. The Cuckoo Sandbox environment is used for the analysis and the setup is described in detail. Accordingly, we discuss the concept of IOCs and the popular formats used as there is currently no standard. As an example of how the proof-of-concept framework can be used, we chose 100 Dridex malware samples and evaluated the traffic and showed what can be used for the generation of network-based IOCs. Results of our system confirm that we can create IOCs from dynamic malware analysis and avoid the legitimate background traffic originating from the sandbox system. We also briefly discuss the sharing of, and application of the generated IOCs and the number of systems that can be used to share them. Lastly we discuss how they can be useful in combating cyber threats.
- Full Text:
- Authors: Rudman, Lauren , Irwin, Barry V W
- Date: 2016
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/429525 , vital:72619 , https://ieeexplore.ieee.org/abstract/document/7802932
- Description: In this paper we present a framework that generates network Indicators of Compromise (IOC) automatically from a malware sample after dynamic runtime analysis. The framework addresses the limitations of manual Indicator of Compromise generation and utilises sandbox environment to perform the malware analysis in. We focus on the generation of network based IOCs from captured traffic files (PCAPs) generated by the dynamic malware analysis. The Cuckoo Sandbox environment is used for the analysis and the setup is described in detail. Accordingly, we discuss the concept of IOCs and the popular formats used as there is currently no standard. As an example of how the proof-of-concept framework can be used, we chose 100 Dridex malware samples and evaluated the traffic and showed what can be used for the generation of network-based IOCs. Results of our system confirm that we can create IOCs from dynamic malware analysis and avoid the legitimate background traffic originating from the sandbox system. We also briefly discuss the sharing of, and application of the generated IOCs and the number of systems that can be used to share them. Lastly we discuss how they can be useful in combating cyber threats.
- Full Text:
Exploratory mathematics talk in a second language: a sociolinguistic perspective:
- Graven, Mellony, Robertson, Sally-Ann
- Authors: Graven, Mellony , Robertson, Sally-Ann
- Date: 2009
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/69907 , vital:29594 , https://doi.org/10.1007/s11858-018-0952-2
- Description: This paper illuminates challenges confronting teachers and students at the literacy/numeracy interface in contexts where students have not developed sufficient English language proficiency to be learning mathematics through English but, due to socio-politically and economically driven perceptions are being taught in English. We analyse transcript data of classroom talk in a South African grade 4 mathematics lesson on fractions. Together with interview data, the lesson data highlight some of the consequences students’ diminished access to their home language appear to have on their access to mathematical meaning-making.
- Full Text:
- Authors: Graven, Mellony , Robertson, Sally-Ann
- Date: 2009
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/69907 , vital:29594 , https://doi.org/10.1007/s11858-018-0952-2
- Description: This paper illuminates challenges confronting teachers and students at the literacy/numeracy interface in contexts where students have not developed sufficient English language proficiency to be learning mathematics through English but, due to socio-politically and economically driven perceptions are being taught in English. We analyse transcript data of classroom talk in a South African grade 4 mathematics lesson on fractions. Together with interview data, the lesson data highlight some of the consequences students’ diminished access to their home language appear to have on their access to mathematical meaning-making.
- Full Text:
Using a transdisciplinary framework to examine mathematics classroom talk taking place in and through a second language
- Graven, Mellony, Robertson, Sally-Ann
- Authors: Graven, Mellony , Robertson, Sally-Ann
- Date: 2009
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/69838 , vital:29586 , https://DOI: 10.1007/s11858-018-0952-2
- Description: This paper proposes a transdisciplinary framework to allow for a multifocal exploration of classroom talk practices. It draws on data from a broader study of talk in South African Grade 4 mathematics classrooms where the language of teaching and learning (English) was the home language for neither the teachers nor their students. Lesson transcript data from one teacher’s lessons on fractions are used to demonstrate how working with three strands of conceptual insight from the disciplines of psychology, sociology and linguistics conduces to a potentially richer understanding of a teacher’s use of classroom talk in mediating her students’ mathematical understanding. By drawing on elements of Vygotsky’s sociocultural psychology, we make visible in the lesson data the ways in which this teacher used the ‘everyday’ in trying to navigate her students’ towards more ‘scientific’ conceptualizations of unit fractions. By then taking up aspects of Bernstein’s sociological work, we articulate, and make visible, how societal circumstances impinge on students’ access to exploratory mathematical discourse needed for epistemological access to abstract and generalized mathematical concepts. Finally, through Halliday’s work on the power of particular linguistic registers for meaning-making, we highlight challenges in learning mathematics in and through a second language and reveal the constraints placed on students’ opportunity to maximally exploit the distinct forms of meaning contained within the mathematics register.
- Full Text:
- Authors: Graven, Mellony , Robertson, Sally-Ann
- Date: 2009
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/69838 , vital:29586 , https://DOI: 10.1007/s11858-018-0952-2
- Description: This paper proposes a transdisciplinary framework to allow for a multifocal exploration of classroom talk practices. It draws on data from a broader study of talk in South African Grade 4 mathematics classrooms where the language of teaching and learning (English) was the home language for neither the teachers nor their students. Lesson transcript data from one teacher’s lessons on fractions are used to demonstrate how working with three strands of conceptual insight from the disciplines of psychology, sociology and linguistics conduces to a potentially richer understanding of a teacher’s use of classroom talk in mediating her students’ mathematical understanding. By drawing on elements of Vygotsky’s sociocultural psychology, we make visible in the lesson data the ways in which this teacher used the ‘everyday’ in trying to navigate her students’ towards more ‘scientific’ conceptualizations of unit fractions. By then taking up aspects of Bernstein’s sociological work, we articulate, and make visible, how societal circumstances impinge on students’ access to exploratory mathematical discourse needed for epistemological access to abstract and generalized mathematical concepts. Finally, through Halliday’s work on the power of particular linguistic registers for meaning-making, we highlight challenges in learning mathematics in and through a second language and reveal the constraints placed on students’ opportunity to maximally exploit the distinct forms of meaning contained within the mathematics register.
- Full Text:
Beneficial effects of medicinal plants in fish diseases
- Stratev, Deyan, Zhelyazkov, Georgi, Noundou, Xavier Siwe, Krause, Rui W M
- Authors: Stratev, Deyan , Zhelyazkov, Georgi , Noundou, Xavier Siwe , Krause, Rui W M
- Date: 2008
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/123487 , vital:35447 , https://doi.org/10.1007/s10499-017-0219-x
- Description: Fish are constantly in contact with pathogens inhabiting water. High population density as well as poor hydrodynamic conditions and feeding lead to an increased sensitivity towards infections. In order to prevent major economic losses due to diseases, various medications are used for treatment and prevention of infections. The use of antimicrobial drugs in aquacultures could lead to emergence of resistance in pathogenic microorganisms. Alternatives are being sought over the last few years to replace antibiotics, and medicinal plants are one of available options for this purpose. These plants are rich in secondary metabolites and phytochemical compounds, which have an effect against viral, bacterial, and parasitic diseases in fish. Their main advantage is their natural origin and most of these plants do not represent threat for human health, the fish, and the environment. The goal of this review is to present information on the treatment of viral, bacterial, and parasitic diseases in fish through medicinal plants, with focus on the mechanisms of action of the identified secondary metabolites, fractions, or plant extracts.
- Full Text:
- Authors: Stratev, Deyan , Zhelyazkov, Georgi , Noundou, Xavier Siwe , Krause, Rui W M
- Date: 2008
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/123487 , vital:35447 , https://doi.org/10.1007/s10499-017-0219-x
- Description: Fish are constantly in contact with pathogens inhabiting water. High population density as well as poor hydrodynamic conditions and feeding lead to an increased sensitivity towards infections. In order to prevent major economic losses due to diseases, various medications are used for treatment and prevention of infections. The use of antimicrobial drugs in aquacultures could lead to emergence of resistance in pathogenic microorganisms. Alternatives are being sought over the last few years to replace antibiotics, and medicinal plants are one of available options for this purpose. These plants are rich in secondary metabolites and phytochemical compounds, which have an effect against viral, bacterial, and parasitic diseases in fish. Their main advantage is their natural origin and most of these plants do not represent threat for human health, the fish, and the environment. The goal of this review is to present information on the treatment of viral, bacterial, and parasitic diseases in fish through medicinal plants, with focus on the mechanisms of action of the identified secondary metabolites, fractions, or plant extracts.
- Full Text:
Cinnamoyl-Oxaborole Amides: Synthesis and Their in Vitro Biological Activity.
- Gumbo, Maureen, Beteck, Richard M, Mandizvo, Tawanda, Seldon, Ronnett, Warner, Digby F, Hoppe, Heinrich C, Isaacs, Michelle, Laming, Dustin, Tam, Christina C, Cheng, Luisa W, Liu, Nicole, Land, Kirkwood, Khanye, Setshaba D
- Authors: Gumbo, Maureen , Beteck, Richard M , Mandizvo, Tawanda , Seldon, Ronnett , Warner, Digby F , Hoppe, Heinrich C , Isaacs, Michelle , Laming, Dustin , Tam, Christina C , Cheng, Luisa W , Liu, Nicole , Land, Kirkwood , Khanye, Setshaba D
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/122879 , vital:35362 , https://doi.org/10.3390/molecules23082038
- Description: Due to the increased interest in their application in the treatment of infectious diseases, boron-containing compounds have received a significant coverage in the literature. Herein, a small set of novel cinnamoly-oxaborole amides were synthesized and screened against nagana Trypanosoma brucei brucei for antitrypanosomal activity. Compound 5g emerged as a new hit with an in vitro IC50 value of 0.086 μM against T. b. brucei without obvious inhibitory activity against HeLa cell lines. The same series was also screened against other human pathogens, including Mycobacterium tuberculosis, the causative agent of tuberculosis (TB), for which moderate to weak activity (10 to >125 μM) was observed. Similarly, these compounds exhibited moderate activity against the human protozoal pathogen Trichomonas vaginalis with no observed effect on common microbiome bacterial species. The cross-species inhibitory activity presents the possibility of these compounds serving as broad-spectrum antibiotics for these prevalent three human pathogens.
- Full Text:
- Authors: Gumbo, Maureen , Beteck, Richard M , Mandizvo, Tawanda , Seldon, Ronnett , Warner, Digby F , Hoppe, Heinrich C , Isaacs, Michelle , Laming, Dustin , Tam, Christina C , Cheng, Luisa W , Liu, Nicole , Land, Kirkwood , Khanye, Setshaba D
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/122879 , vital:35362 , https://doi.org/10.3390/molecules23082038
- Description: Due to the increased interest in their application in the treatment of infectious diseases, boron-containing compounds have received a significant coverage in the literature. Herein, a small set of novel cinnamoly-oxaborole amides were synthesized and screened against nagana Trypanosoma brucei brucei for antitrypanosomal activity. Compound 5g emerged as a new hit with an in vitro IC50 value of 0.086 μM against T. b. brucei without obvious inhibitory activity against HeLa cell lines. The same series was also screened against other human pathogens, including Mycobacterium tuberculosis, the causative agent of tuberculosis (TB), for which moderate to weak activity (10 to >125 μM) was observed. Similarly, these compounds exhibited moderate activity against the human protozoal pathogen Trichomonas vaginalis with no observed effect on common microbiome bacterial species. The cross-species inhibitory activity presents the possibility of these compounds serving as broad-spectrum antibiotics for these prevalent three human pathogens.
- Full Text:
Novobiocin–ferrocene conjugates possessing anticancer and antiplasmodial activity independent of HSP90 inhibition.
- Mbaba, Mziyanda, de la Mare, Jo-Anne, Sterrenberg, Jason N, Kajewole, Deborah, Maharaj, Shantal, Edkins, Adrienne L, Isaacs, Michelle, Hoppe, Heinrich C, Khanye, Setshaba D
- Authors: Mbaba, Mziyanda , de la Mare, Jo-Anne , Sterrenberg, Jason N , Kajewole, Deborah , Maharaj, Shantal , Edkins, Adrienne L , Isaacs, Michelle , Hoppe, Heinrich C , Khanye, Setshaba D
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/122858 , vital:35359 , https://doi.org/10.1007/s00775-018-1634-9
- Description: A series of tailored novobiocin–ferrocene conjugates was prepared in moderate yields and investigated for in vitro anticancer and antiplasmodial activity against the MDA-MB-231 breast cancer line and Plasmodium falciparum 3D7 strain, respectively. While the target compounds displayed moderate anticancer activity against the breast cancer cell line with IC50 values in the mid-micromolar range, compounds 10a–c displayed promising antiplasmodial activity as low as 0.889 µM. Furthermore, the most promising compounds were tested for inhibitory effects against a postulated target, heat shock protein 90 (Hsp90).
- Full Text:
- Authors: Mbaba, Mziyanda , de la Mare, Jo-Anne , Sterrenberg, Jason N , Kajewole, Deborah , Maharaj, Shantal , Edkins, Adrienne L , Isaacs, Michelle , Hoppe, Heinrich C , Khanye, Setshaba D
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/122858 , vital:35359 , https://doi.org/10.1007/s00775-018-1634-9
- Description: A series of tailored novobiocin–ferrocene conjugates was prepared in moderate yields and investigated for in vitro anticancer and antiplasmodial activity against the MDA-MB-231 breast cancer line and Plasmodium falciparum 3D7 strain, respectively. While the target compounds displayed moderate anticancer activity against the breast cancer cell line with IC50 values in the mid-micromolar range, compounds 10a–c displayed promising antiplasmodial activity as low as 0.889 µM. Furthermore, the most promising compounds were tested for inhibitory effects against a postulated target, heat shock protein 90 (Hsp90).
- Full Text: