Art and Ethical Criticism, edited by Garry L. Hagberg
- Authors: Jones, Ward E
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/275612 , vital:55063 , xlink:href="https://doi.org/10.1093/mind/fzq098"
- Description: Book Review: If there is a norm that a book’s title should give a reliable indication of its contents, Art and Ethical Criticism does not quite meet it. By my judgement, only seven of its twelve essays concern either the ethical criticism of art or the criticism of ethical positions within artworks.
- Full Text:
- Date Issued: 2010
- Authors: Jones, Ward E
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/275612 , vital:55063 , xlink:href="https://doi.org/10.1093/mind/fzq098"
- Description: Book Review: If there is a norm that a book’s title should give a reliable indication of its contents, Art and Ethical Criticism does not quite meet it. By my judgement, only seven of its twelve essays concern either the ethical criticism of art or the criticism of ethical positions within artworks.
- Full Text:
- Date Issued: 2010
Interaction between nickel hydroxy phthalocyanine derivatives with p-chlorophenol
- Khene, Samson, Lobb, Kevin, Nyokong, Tebello
- Authors: Khene, Samson , Lobb, Kevin , Nyokong, Tebello
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/248461 , vital:51688 , xlink:href="https://doi.org/10.1016/j.electacta.2010.10.007"
- Description: In this work the interaction between peripherally (β) substituted nickel tetrahydroxyphthalocyanines (β-NiPc(OH)4 and β-Ni(O)Pc(OH)4) with p-chlorophenol is theoretically rationalised by performing calculations at B3LYP/6-31G(d) level. Density functional theory (DFT) and molecular orbital theory are used to calculate the condensed Fukui function for phthalocyanine derivatives and p-chlorophenol, in order to determine the reactive sites involved when p-chlorophenol is oxidized, and to compare theoretically predicted reactivity to experimentally determined electrocatalytic activity. Electrocatalytic activities of adsorbed NiPc derivatives: ads-α-NiPc(OH)8-OPGE (OPGE = ordinary poly graphite electrode), ads-α-NiPc(OH)4-OPGE and ads-β-NiPc(OH)4-OPGE are compared with those of the polymerized counterparts: poly-α-Ni(O)Pc(OH)8-OPGE, poly-α-NiPc(OH)4-OPGE and poly-β-NiPc(OH)4-OPGE, respectively.
- Full Text:
- Date Issued: 2010
- Authors: Khene, Samson , Lobb, Kevin , Nyokong, Tebello
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/248461 , vital:51688 , xlink:href="https://doi.org/10.1016/j.electacta.2010.10.007"
- Description: In this work the interaction between peripherally (β) substituted nickel tetrahydroxyphthalocyanines (β-NiPc(OH)4 and β-Ni(O)Pc(OH)4) with p-chlorophenol is theoretically rationalised by performing calculations at B3LYP/6-31G(d) level. Density functional theory (DFT) and molecular orbital theory are used to calculate the condensed Fukui function for phthalocyanine derivatives and p-chlorophenol, in order to determine the reactive sites involved when p-chlorophenol is oxidized, and to compare theoretically predicted reactivity to experimentally determined electrocatalytic activity. Electrocatalytic activities of adsorbed NiPc derivatives: ads-α-NiPc(OH)8-OPGE (OPGE = ordinary poly graphite electrode), ads-α-NiPc(OH)4-OPGE and ads-β-NiPc(OH)4-OPGE are compared with those of the polymerized counterparts: poly-α-Ni(O)Pc(OH)8-OPGE, poly-α-NiPc(OH)4-OPGE and poly-β-NiPc(OH)4-OPGE, respectively.
- Full Text:
- Date Issued: 2010
Global resonance, local amplification: Antjie Krog on a world stage
- Authors: Garman, Anthea
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/159736 , vital:40338 , https://doi.org/10.1080/02533950903562468
- Description: As a result of the publication of Country of my Skull, an extraordinary literary enactment of witness and confession, Antjie Krog has become internationally known as a writer profoundly engaged with the events and human drama uncovered by the South African Truth and Reconciliation Commission. Her voice is read as that of an expert witness of trauma, forgiveness and the means by which the horrors of the past may be addressed. In seeking to understand how Krog came to be taken up internationally as a representative voice of the South African transition, I focus on a particular global–local nexus for an explanation. I theorise that dealing with the past via truth commissions, a global publishing context and the work of a local writer with a record of excellent literary output and political action enabled a fit which resulted in Krog coming to prominence on a world stage.
- Full Text:
- Date Issued: 2010
- Authors: Garman, Anthea
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/159736 , vital:40338 , https://doi.org/10.1080/02533950903562468
- Description: As a result of the publication of Country of my Skull, an extraordinary literary enactment of witness and confession, Antjie Krog has become internationally known as a writer profoundly engaged with the events and human drama uncovered by the South African Truth and Reconciliation Commission. Her voice is read as that of an expert witness of trauma, forgiveness and the means by which the horrors of the past may be addressed. In seeking to understand how Krog came to be taken up internationally as a representative voice of the South African transition, I focus on a particular global–local nexus for an explanation. I theorise that dealing with the past via truth commissions, a global publishing context and the work of a local writer with a record of excellent literary output and political action enabled a fit which resulted in Krog coming to prominence on a world stage.
- Full Text:
- Date Issued: 2010
In search of critical engagement: a history of South African university based journalism
- du Toit, Jeanne, de Beer, Arnold S
- Authors: du Toit, Jeanne , de Beer, Arnold S
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/159453 , vital:40299 , https://hdl.handle.net/10520/EJC139372
- Description: Historical discussions of South African journalism education (Tomaselli 1991: 167; De Beer and Tomaselli 2000; Steenveld 2006) refer to examples of teaching practice which have served as critical interventions into political process. They occur primarily in the late 1970s and 1980s and it is arguable that the social circumstances that existed during this period presented unique opportunities for critical education. The literature suggests, however, that these examples represent the exception rather than the rule. It would seem, in fact, that a critical approach to journalism education has never been realised in South Africa in any substantive way. It is with this argument in mind that I explore, in this paper, the historical construction of journalism as a subject of university education in South Africa.
- Full Text:
- Date Issued: 2010
- Authors: du Toit, Jeanne , de Beer, Arnold S
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/159453 , vital:40299 , https://hdl.handle.net/10520/EJC139372
- Description: Historical discussions of South African journalism education (Tomaselli 1991: 167; De Beer and Tomaselli 2000; Steenveld 2006) refer to examples of teaching practice which have served as critical interventions into political process. They occur primarily in the late 1970s and 1980s and it is arguable that the social circumstances that existed during this period presented unique opportunities for critical education. The literature suggests, however, that these examples represent the exception rather than the rule. It would seem, in fact, that a critical approach to journalism education has never been realised in South Africa in any substantive way. It is with this argument in mind that I explore, in this paper, the historical construction of journalism as a subject of university education in South Africa.
- Full Text:
- Date Issued: 2010
The geochemistry and evolution of Palaeogene phonolites, central Namibia:
- Authors: Marsh, Julian S
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/145000 , vital:38399 , https://doi.org/10.1016/j.lithos.2010.02.012
- Description: Phonolites of Palaeogene age occur at two different localities in central Namibia, occurring as clusters of eroded monogenetic lava domes. Six phonolites at Aris collectively exhibit a narrow compositional range and represent a single magma system of highly evolved phonolite with high concentrations of Na2O, Rb, Th, Zr, Zn, Pb, and REE and very low abundances of MgO, P2O5, Sr and Ba. No mafic rocks are associated with the Aris phonolites and their ultimate petrogenetic origin remains obscure. The more abundant Staalhart phonolites exhibit more variable but scattered compositional variation consistent with fractional crystallization dominated by sanidine (and nepheline) and pyroxene. The behaviour of REE is decoupled from Zr, Nb, and Th in this suite indicating a controlling role for minor phases in their evolution. The least evolved phonolites have initial 87Sr/86Sr 0.7043, which is identical to a small occurrence of associated plagioclase-bearing nephelinite indicating a possible petrogenetic link.
- Full Text:
- Date Issued: 2010
- Authors: Marsh, Julian S
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/145000 , vital:38399 , https://doi.org/10.1016/j.lithos.2010.02.012
- Description: Phonolites of Palaeogene age occur at two different localities in central Namibia, occurring as clusters of eroded monogenetic lava domes. Six phonolites at Aris collectively exhibit a narrow compositional range and represent a single magma system of highly evolved phonolite with high concentrations of Na2O, Rb, Th, Zr, Zn, Pb, and REE and very low abundances of MgO, P2O5, Sr and Ba. No mafic rocks are associated with the Aris phonolites and their ultimate petrogenetic origin remains obscure. The more abundant Staalhart phonolites exhibit more variable but scattered compositional variation consistent with fractional crystallization dominated by sanidine (and nepheline) and pyroxene. The behaviour of REE is decoupled from Zr, Nb, and Th in this suite indicating a controlling role for minor phases in their evolution. The least evolved phonolites have initial 87Sr/86Sr 0.7043, which is identical to a small occurrence of associated plagioclase-bearing nephelinite indicating a possible petrogenetic link.
- Full Text:
- Date Issued: 2010
Ethics-oriented learning in environmental education workplaces: An activity theory approach
- Authors: Olvitt, Lausanne L
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/370961 , vital:66398 , xlink:href="https://www.ajol.info/index.php/sajee/article/view/122874"
- Description: In the context of increasing national and global environmental challenges and their implications for the working world, new ethics and practices are being introduced into workplaces that take better account of socio-ecological relations. Little is understood, however, about the nature of ethics-oriented workplace learning. Drawing on Cultural Historical Activity Theory (CHAT), which enables historically and contextually situated relational perspectives to emerge, this paper explores contradictions in the activity systems of two young environmental education learner-practitioners struggling to engage with the ethical dimensions of their professional work and the professional development course they are studying. The study focuses in particular on the environmental values and ethics component of their course – a year-long Learnership in Environmental Education, Training and Development Practices (EETDP). The paper reflects how tensions and contradictions within and between the interacting activity systems of the workplace, the course, and its regulating qualifications authority influence the teaching and learning of the environmental ethics component of the course. Ethics-oriented teaching and learning processes are found to be strongly influenced by the ‘rules’ and ‘mediating tools’ of these interacting systems, but these are often at odds with the ethical perspectives, socio-cultural context and skills of the ‘subject’ and ‘community’. These systemic contradictions can be more fully understood when their cultural and historical origins are made explicit. The analytical process has led to a more nuanced understanding of ethics-oriented teaching and learning in a workplace-based course, and has revealed several areas needing more careful research (particularly the area of environmental discourses) and the explicit and implicit language of ethics.
- Full Text:
- Date Issued: 2010
- Authors: Olvitt, Lausanne L
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/370961 , vital:66398 , xlink:href="https://www.ajol.info/index.php/sajee/article/view/122874"
- Description: In the context of increasing national and global environmental challenges and their implications for the working world, new ethics and practices are being introduced into workplaces that take better account of socio-ecological relations. Little is understood, however, about the nature of ethics-oriented workplace learning. Drawing on Cultural Historical Activity Theory (CHAT), which enables historically and contextually situated relational perspectives to emerge, this paper explores contradictions in the activity systems of two young environmental education learner-practitioners struggling to engage with the ethical dimensions of their professional work and the professional development course they are studying. The study focuses in particular on the environmental values and ethics component of their course – a year-long Learnership in Environmental Education, Training and Development Practices (EETDP). The paper reflects how tensions and contradictions within and between the interacting activity systems of the workplace, the course, and its regulating qualifications authority influence the teaching and learning of the environmental ethics component of the course. Ethics-oriented teaching and learning processes are found to be strongly influenced by the ‘rules’ and ‘mediating tools’ of these interacting systems, but these are often at odds with the ethical perspectives, socio-cultural context and skills of the ‘subject’ and ‘community’. These systemic contradictions can be more fully understood when their cultural and historical origins are made explicit. The analytical process has led to a more nuanced understanding of ethics-oriented teaching and learning in a workplace-based course, and has revealed several areas needing more careful research (particularly the area of environmental discourses) and the explicit and implicit language of ethics.
- Full Text:
- Date Issued: 2010
Human impacts on hydrological health and the provision of ecosystemservices: a case study of the eMthonjeni–Fairview Spring Wetland, Grahamstown, South Africa
- Sinchembe, M, Ellery, William F N
- Authors: Sinchembe, M , Ellery, William F N
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/144343 , vital:38337 , DOI: 10.2989/16085914.2010.538508
- Description: Wetland hydrological health and the provision of indirect ecosystem services in the eMthonjeni–Fairview Spring Wetland, Grahamstown, South Africa, were assessed in 2008, using the newly developed wetland assessment tools WET-Health and WET-EcoServices. Variation in health and ecosystem services were assessed over time, based on aerial photograph interpretation and the use of the score sheets in these assessment tools. Hydrological health and indirect ecosystem services of the wetland have been altered since 1949, due to human activities both in the catchment and the wetland. The most significant human intervention on the wetland's hydrological health was the result of road construction and invasion by alien plants. Water use by local residents had an unmeasurable effect on hydrological health. Wetland health is related to the provision of wetland ecosystem services, and cumulative impacts in the catchment and wetland have reduced the provision of many indirect wetland ecosystem services.
- Full Text:
- Date Issued: 2010
- Authors: Sinchembe, M , Ellery, William F N
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/144343 , vital:38337 , DOI: 10.2989/16085914.2010.538508
- Description: Wetland hydrological health and the provision of indirect ecosystem services in the eMthonjeni–Fairview Spring Wetland, Grahamstown, South Africa, were assessed in 2008, using the newly developed wetland assessment tools WET-Health and WET-EcoServices. Variation in health and ecosystem services were assessed over time, based on aerial photograph interpretation and the use of the score sheets in these assessment tools. Hydrological health and indirect ecosystem services of the wetland have been altered since 1949, due to human activities both in the catchment and the wetland. The most significant human intervention on the wetland's hydrological health was the result of road construction and invasion by alien plants. Water use by local residents had an unmeasurable effect on hydrological health. Wetland health is related to the provision of wetland ecosystem services, and cumulative impacts in the catchment and wetland have reduced the provision of many indirect wetland ecosystem services.
- Full Text:
- Date Issued: 2010
Biodiversity research and conservation: careers
- Authors: Rosenberg, Eureta
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/391079 , vital:68615 , xlink:href="https://hdl.handle.net/10520/EJC89811"
- Description: It is the International Year of Biodiversity, and if you are interested in a career in biodiversity, there are many options from which to choose. This article introduces the dynamic and growing field of biodiversity management, research and conservation. It gives a taste of the varied careers that would suit different interests and talents and invites you to look with fresh eyes at the field and its possibilities.
- Full Text: false
- Date Issued: 2010
- Authors: Rosenberg, Eureta
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/391079 , vital:68615 , xlink:href="https://hdl.handle.net/10520/EJC89811"
- Description: It is the International Year of Biodiversity, and if you are interested in a career in biodiversity, there are many options from which to choose. This article introduces the dynamic and growing field of biodiversity management, research and conservation. It gives a taste of the varied careers that would suit different interests and talents and invites you to look with fresh eyes at the field and its possibilities.
- Full Text: false
- Date Issued: 2010
Towards enhancing indigenous language acquisition skills through MMORPGs
- Kaschula, Russell H, Mostert, André
- Authors: Kaschula, Russell H , Mostert, André
- Date: 2010
- Subjects: Indigenous peoples -- Languages -- Study and teaching -- South Africa , Language and languags -- Computer-assisted instruction , Language and languags -- Study and teaching -- Technological innovation , Language acquisition , Computer games
- Language: English
- Type: article , text
- Identifier: http://hdl.handle.net/10962/59343 , vital:27559 , http://alternation.ukzn.ac.za/Files/docs/17.1/08%20Kas%20FIN.pdf
- Description: The growing interest and access to massively multiplayer online role-playing games (MMORPG) has opened up significant new scope for educational methodologies, from standard language teaching options through to formalising the skills that a ‘player’ develops through their quests and other activities. This scope is extensive and has created numerous opportunities for innovation both within education and the world of work. This is evidenced by the increasing presence of educational establishments in the virtual world, with Second Life being the most popular for conventional educational purposes. In Second Life and many other realms participants are earning some income and in some cases enjoying a reasonable living from online activities, while developing their skills base. These MMORPGs may open opportunities for promoting language acquisition provided this is located within a suitably attractive realm; ‘players’ would then engage in activities that would contribute to their abilities to use the indigenous languages in everyday life. This article explores how such a system could be developed and the likely contribution it could make to promote a multilingual environment at school and post school levels. Further, it will identify the implications for the future of teaching and learning through the harnessing of MMORPGs.
- Full Text:
- Date Issued: 2010
- Authors: Kaschula, Russell H , Mostert, André
- Date: 2010
- Subjects: Indigenous peoples -- Languages -- Study and teaching -- South Africa , Language and languags -- Computer-assisted instruction , Language and languags -- Study and teaching -- Technological innovation , Language acquisition , Computer games
- Language: English
- Type: article , text
- Identifier: http://hdl.handle.net/10962/59343 , vital:27559 , http://alternation.ukzn.ac.za/Files/docs/17.1/08%20Kas%20FIN.pdf
- Description: The growing interest and access to massively multiplayer online role-playing games (MMORPG) has opened up significant new scope for educational methodologies, from standard language teaching options through to formalising the skills that a ‘player’ develops through their quests and other activities. This scope is extensive and has created numerous opportunities for innovation both within education and the world of work. This is evidenced by the increasing presence of educational establishments in the virtual world, with Second Life being the most popular for conventional educational purposes. In Second Life and many other realms participants are earning some income and in some cases enjoying a reasonable living from online activities, while developing their skills base. These MMORPGs may open opportunities for promoting language acquisition provided this is located within a suitably attractive realm; ‘players’ would then engage in activities that would contribute to their abilities to use the indigenous languages in everyday life. This article explores how such a system could be developed and the likely contribution it could make to promote a multilingual environment at school and post school levels. Further, it will identify the implications for the future of teaching and learning through the harnessing of MMORPGs.
- Full Text:
- Date Issued: 2010
Assessment of the monkfish Lophius vomerinus resource off Namibia
- Maartens, Lima, Booth, Anthony J
- Authors: Maartens, Lima , Booth, Anthony J
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/123863 , vital:35509 , https://doi.10.2989/025776101784528926
- Description: Monkfish (Lophius vomerinus and L. vaillanti) constitute a commercially important resource off Namibia. During 1998, the Lophius resource was the fourth most important commercial resource in terms of landed mass (c. 17 000 tons) and the fifth most important commercial resource in terms of export value (U$19.8 million) of the Namibian fishing sector (Ministry of Fisheries and Marine Resources, Namibia, unpublished data). Historically, monkfish constituted an important bycatch in the trawl fishery directed at hake (Merluccius spp.), but due to increasing market demand since the early 1990s, a fishery directed at monkfish and sole (Austroglossus microlepis) has developed. The Namibian Ministry of Fisheries and Marine Resources has identified the need to develop a management plan to ensure the resource’s medium and longterm sustainability (Maartens et al. 1999). Long-term resource management plans include the identification of an assessment model to represent reality so that the implications of managing the resource in future under a range of assumptions about its present status and its future dynamics (Cochrane et al. 1998) can be examined. The aim of this study was, therefore, to assess the status of at least part of the monkfish resource using a length-based cohort assessment (Jones 1979, 1984, Sparre and Venema 1998) and an age structured production model (Punt 1994, Punt and Japp 1994, Booth and Punt 1998).
- Full Text:
- Date Issued: 2010
- Authors: Maartens, Lima , Booth, Anthony J
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/123863 , vital:35509 , https://doi.10.2989/025776101784528926
- Description: Monkfish (Lophius vomerinus and L. vaillanti) constitute a commercially important resource off Namibia. During 1998, the Lophius resource was the fourth most important commercial resource in terms of landed mass (c. 17 000 tons) and the fifth most important commercial resource in terms of export value (U$19.8 million) of the Namibian fishing sector (Ministry of Fisheries and Marine Resources, Namibia, unpublished data). Historically, monkfish constituted an important bycatch in the trawl fishery directed at hake (Merluccius spp.), but due to increasing market demand since the early 1990s, a fishery directed at monkfish and sole (Austroglossus microlepis) has developed. The Namibian Ministry of Fisheries and Marine Resources has identified the need to develop a management plan to ensure the resource’s medium and longterm sustainability (Maartens et al. 1999). Long-term resource management plans include the identification of an assessment model to represent reality so that the implications of managing the resource in future under a range of assumptions about its present status and its future dynamics (Cochrane et al. 1998) can be examined. The aim of this study was, therefore, to assess the status of at least part of the monkfish resource using a length-based cohort assessment (Jones 1979, 1984, Sparre and Venema 1998) and an age structured production model (Punt 1994, Punt and Japp 1994, Booth and Punt 1998).
- Full Text:
- Date Issued: 2010
The South African constitutional court and the rule of law: the Masethla judgment, a cause for concern?
- Authors: Krüger, Rósaan
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/68930 , vital:29340 , http://ref.scielo.org/22p54n
- Description: Publisher version , The rule of law as a foundational constitutional value constrains the exercise of public power but the precise limits of the constraints it sets are not well defined. In Masethla v President of the Republic of South Africa, the majority of the Constitutional Court opted for an interpretation of this value that frees the President from adherence to the demands of procedural fairness when exercising certain constitutional powers. This note will investigate the soundness of that interpretation against the background of theoretical expositions of the rule of law and earlier Constitutional Court judgments.
- Full Text:
- Date Issued: 2010
- Authors: Krüger, Rósaan
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/68930 , vital:29340 , http://ref.scielo.org/22p54n
- Description: Publisher version , The rule of law as a foundational constitutional value constrains the exercise of public power but the precise limits of the constraints it sets are not well defined. In Masethla v President of the Republic of South Africa, the majority of the Constitutional Court opted for an interpretation of this value that frees the President from adherence to the demands of procedural fairness when exercising certain constitutional powers. This note will investigate the soundness of that interpretation against the background of theoretical expositions of the rule of law and earlier Constitutional Court judgments.
- Full Text:
- Date Issued: 2010
Spectroscopic studies of nanostructures of negatively charged free base porphyrin and positively charged tin porphyrins
- George, Reama C, Egharevba, Gabriel O, Nyokong, Tebello
- Authors: George, Reama C , Egharevba, Gabriel O , Nyokong, Tebello
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/261661 , vital:53432 , xlink:href="https://doi.org/10.1016/j.poly.2010.01.028"
- Description: Spectroscopic studies were carried out on the homoaggregates of negatively charged free base meso-tetraphenylsulfonated porphyrin ([H2TPPS4]4−) and heteroaggregates of a mixture of protonated ([H4TPPS4]2−) and tin meso-tetra (N-methyl-4-pyridyl) porphyrin ([SnTMPyP]4+). The spectroscopic studies were done to determine the optimal conditions required for the fabrication of porphyrin nanorods by ionic self assembly of two oppositely charged porphyrins. In addition, the various spectral changes of [H4TPPS4]2− with concurrent change in pH and concentration are also investigated. In acid media at pH more than 3, and at concentrations less than 1 × 10−5 M, [H4TPPS4]2− molecules form J aggregates. A mixture of [H4TPPS4]2− and [SnTMPyP]4+ forms heteroaggregates of the J type in acid media. At pH’s 2 to 3, the optimum ratio for the formation of J aggregates is 3:1 and for pH 1, the optimum ratio is 2:1. Transmission electron microscope images of the nanostructures formed show that they are of cylindrical shape.
- Full Text:
- Date Issued: 2010
- Authors: George, Reama C , Egharevba, Gabriel O , Nyokong, Tebello
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/261661 , vital:53432 , xlink:href="https://doi.org/10.1016/j.poly.2010.01.028"
- Description: Spectroscopic studies were carried out on the homoaggregates of negatively charged free base meso-tetraphenylsulfonated porphyrin ([H2TPPS4]4−) and heteroaggregates of a mixture of protonated ([H4TPPS4]2−) and tin meso-tetra (N-methyl-4-pyridyl) porphyrin ([SnTMPyP]4+). The spectroscopic studies were done to determine the optimal conditions required for the fabrication of porphyrin nanorods by ionic self assembly of two oppositely charged porphyrins. In addition, the various spectral changes of [H4TPPS4]2− with concurrent change in pH and concentration are also investigated. In acid media at pH more than 3, and at concentrations less than 1 × 10−5 M, [H4TPPS4]2− molecules form J aggregates. A mixture of [H4TPPS4]2− and [SnTMPyP]4+ forms heteroaggregates of the J type in acid media. At pH’s 2 to 3, the optimum ratio for the formation of J aggregates is 3:1 and for pH 1, the optimum ratio is 2:1. Transmission electron microscope images of the nanostructures formed show that they are of cylindrical shape.
- Full Text:
- Date Issued: 2010
Third World Express: trains and “revolution” in Southern African poetry
- Authors: Wright, Laurence
- Date: 2010
- Language: English
- Type: text , article
- Identifier: vital:7066 , http://hdl.handle.net/10962/d1007453 , https://doi.org/10.4102/lit.v31i1.34
- Description: preprint , This article examines political dimensions of the train metaphor in selected southern African poems, some of them in English translation. Exploring work by Mongane Serote, B.W. Vilakazi, Demetrius Segooa, Phedi Tlhobolo, Thami Mseleku, Jeremy Cronin, Alan Lennox-Short, Anthony Farmer, Freedom T.V. Nyamubaya, Abduraghiem Johnstone and Mondli Gwala, the argument shows some of the ways in which the technological character of trains and railways is made to carry a message of political insurrection and revolution. The author shows that the political potential of the railway metaphor builds on the general response to railways evident in poems indebted to traditional African praise poetry. The piece also demonstrates that political contention within different strands of the southern African liberation movement could also find expression using the railway metaphor.
- Full Text:
- Date Issued: 2010
- Authors: Wright, Laurence
- Date: 2010
- Language: English
- Type: text , article
- Identifier: vital:7066 , http://hdl.handle.net/10962/d1007453 , https://doi.org/10.4102/lit.v31i1.34
- Description: preprint , This article examines political dimensions of the train metaphor in selected southern African poems, some of them in English translation. Exploring work by Mongane Serote, B.W. Vilakazi, Demetrius Segooa, Phedi Tlhobolo, Thami Mseleku, Jeremy Cronin, Alan Lennox-Short, Anthony Farmer, Freedom T.V. Nyamubaya, Abduraghiem Johnstone and Mondli Gwala, the argument shows some of the ways in which the technological character of trains and railways is made to carry a message of political insurrection and revolution. The author shows that the political potential of the railway metaphor builds on the general response to railways evident in poems indebted to traditional African praise poetry. The piece also demonstrates that political contention within different strands of the southern African liberation movement could also find expression using the railway metaphor.
- Full Text:
- Date Issued: 2010
Estuarine use by spotted grunter Pomadasys commersonnii in a South African estuary, as determined by acoustic telemetry
- Childs, Amber-Robyn, Cowley, Paul D, Næsje, T F, Booth, Anthony J, Potts, Warren M, Thorstad, Eva B, Økland, F
- Authors: Childs, Amber-Robyn , Cowley, Paul D , Næsje, T F , Booth, Anthony J , Potts, Warren M , Thorstad, Eva B , Økland, F
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/124428 , vital:35612 , https://doi.org/10.2989/A JMS.2008.30.1.12.462
- Description: Estuaries are important in the life history and the maintenance of the diversity of coastal fish species because of their function as nursery areas for juveniles as well as feeding grounds for adults (Cyrus 1991). The dependence of many fish species on estuaries is well documented (e.g. Wallace et al. 1984, Lenanton and Potter 1987, Blaber et al. 1989, Whitfield 1990, Hoss and Thayer 1993). Spotted grunter Pomadasys commersonnii (Haemulidae) (Lacepède 1801) is an estuarine-dependent species which spawns in the KwaZulu-Natal inshore coastal waters, between August and December (Wallace 1975b, Wallace and van der Elst 1975, Harris and Cyrus 1997, 1999). The eggs and larvae are transported southwards by the Agulhas Current, and juveniles between 20 mm and 50 mm TL recruit into the KwaZulu-Natal and south-eastern Cape estuaries (Wallace and van der Elst 1975, Whitfield 1990). Juvenile spotted grunter make use of the abundant food resources in estuaries, where they grow rapidly and remain for a period of 1–3 years (Wallace and Schleyer 1979, Day et al. 1981). Upon attaining sexual maturity (at between 300 mm and 400 mm TL), they return to the marine environment (Wallace 1975b). Some adults, however, return to estuaries to feed and to regain condition after spawning (Wallace 1975b, Whitfield 1994). The return of post-spawning fish coincides with increased catches by fishers in estuaries between July and January. These events are known as ‘grunter runs’ (Wallace 1975a, Marais and Baird 1980, Marais 1988, Pradervand and Baird 2002). It is suggested that adults spend up to several months in estuaries, before moving back to sea where they undergo gonadal development and ultimately spawn (Wallace 1975b, Wallace and van der Elst 1975). It is believed that adult fish also enter estuaries in a prespawning state to gain condition en route to their spawning grounds in KwaZulu-Natal (Webb 2002).
- Full Text:
- Date Issued: 2010
- Authors: Childs, Amber-Robyn , Cowley, Paul D , Næsje, T F , Booth, Anthony J , Potts, Warren M , Thorstad, Eva B , Økland, F
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/124428 , vital:35612 , https://doi.org/10.2989/A JMS.2008.30.1.12.462
- Description: Estuaries are important in the life history and the maintenance of the diversity of coastal fish species because of their function as nursery areas for juveniles as well as feeding grounds for adults (Cyrus 1991). The dependence of many fish species on estuaries is well documented (e.g. Wallace et al. 1984, Lenanton and Potter 1987, Blaber et al. 1989, Whitfield 1990, Hoss and Thayer 1993). Spotted grunter Pomadasys commersonnii (Haemulidae) (Lacepède 1801) is an estuarine-dependent species which spawns in the KwaZulu-Natal inshore coastal waters, between August and December (Wallace 1975b, Wallace and van der Elst 1975, Harris and Cyrus 1997, 1999). The eggs and larvae are transported southwards by the Agulhas Current, and juveniles between 20 mm and 50 mm TL recruit into the KwaZulu-Natal and south-eastern Cape estuaries (Wallace and van der Elst 1975, Whitfield 1990). Juvenile spotted grunter make use of the abundant food resources in estuaries, where they grow rapidly and remain for a period of 1–3 years (Wallace and Schleyer 1979, Day et al. 1981). Upon attaining sexual maturity (at between 300 mm and 400 mm TL), they return to the marine environment (Wallace 1975b). Some adults, however, return to estuaries to feed and to regain condition after spawning (Wallace 1975b, Whitfield 1994). The return of post-spawning fish coincides with increased catches by fishers in estuaries between July and January. These events are known as ‘grunter runs’ (Wallace 1975a, Marais and Baird 1980, Marais 1988, Pradervand and Baird 2002). It is suggested that adults spend up to several months in estuaries, before moving back to sea where they undergo gonadal development and ultimately spawn (Wallace 1975b, Wallace and van der Elst 1975). It is believed that adult fish also enter estuaries in a prespawning state to gain condition en route to their spawning grounds in KwaZulu-Natal (Webb 2002).
- Full Text:
- Date Issued: 2010
When 140 years of small-town meets journalism education newspapering:
- Authors: Garman, Anthea
- Date: 2010
- Language: English
- Type: text , article
- Identifier: vital:38358 , http://hdl.handle.net/10520/EJC139344
- Description: By acquiring a 140-year-old newspaper as its site of experiential learning for journalism students in 2003, the Rhodes University School of Journalism and Media Studies set out boldly to enhance both journalism teaching and journalism practice in Grahamstown and South Africa.
- Full Text:
- Date Issued: 2010
- Authors: Garman, Anthea
- Date: 2010
- Language: English
- Type: text , article
- Identifier: vital:38358 , http://hdl.handle.net/10520/EJC139344
- Description: By acquiring a 140-year-old newspaper as its site of experiential learning for journalism students in 2003, the Rhodes University School of Journalism and Media Studies set out boldly to enhance both journalism teaching and journalism practice in Grahamstown and South Africa.
- Full Text:
- Date Issued: 2010
Population structure and growth of polydorid polychaetes that infest cultured abalone Haliotis midae
- Simon, Carol A, Booth, Anthony J
- Authors: Simon, Carol A , Booth, Anthony J
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/125731 , vital:35812 , https://doi.10.2989/AJMS.2007.29.3.16.346
- Description: Polydorid polychaetes can infest cultured abalone thereby reducing productivity. In order to effectively control these pests, their reproductive biology must be understood. The population dynamics and reproduction of polydorids infesting abalone Haliotis midae from two farms in South Africa is described using a length-based, age-structured model. Shells were infested mainly by introduced Boccardia proboscidea. Polydora hoplura and Dipolydora capensis were also present but in numbers too few to identify factors influencing infestation. At both farms, B. proboscidea lived for a minimum of 12 months. Growth rate, size at maturity, maximum size, infestation intensity, recruitment, percentage of the population brooding and mortality appear to be affected by abalone feeding regime and water temperature, and these factors need to be considered in controlling infestation. Brooders and recruits were present throughout the year, but increased significantly during mid- to late winter/early spring when water temperature and day length increased. Treatment measures should therefore be implemented throughout the year but with increased effort when water temperature increases.
- Full Text:
- Date Issued: 2010
Population structure and growth of polydorid polychaetes that infest cultured abalone Haliotis midae
- Authors: Simon, Carol A , Booth, Anthony J
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/125731 , vital:35812 , https://doi.10.2989/AJMS.2007.29.3.16.346
- Description: Polydorid polychaetes can infest cultured abalone thereby reducing productivity. In order to effectively control these pests, their reproductive biology must be understood. The population dynamics and reproduction of polydorids infesting abalone Haliotis midae from two farms in South Africa is described using a length-based, age-structured model. Shells were infested mainly by introduced Boccardia proboscidea. Polydora hoplura and Dipolydora capensis were also present but in numbers too few to identify factors influencing infestation. At both farms, B. proboscidea lived for a minimum of 12 months. Growth rate, size at maturity, maximum size, infestation intensity, recruitment, percentage of the population brooding and mortality appear to be affected by abalone feeding regime and water temperature, and these factors need to be considered in controlling infestation. Brooders and recruits were present throughout the year, but increased significantly during mid- to late winter/early spring when water temperature and day length increased. Treatment measures should therefore be implemented throughout the year but with increased effort when water temperature increases.
- Full Text:
- Date Issued: 2010
Monitoring perceptions of social progress and pride of place in a South African community
- Moller, Valerie, Radloff, Sarah E
- Authors: Moller, Valerie , Radloff, Sarah E
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/68468 , vital:29261 , https://doi.org/10.1007/s11482-010-9092-8 https://doi.org/10.1007/s11482-011-9145-7
- Description: Publisher version , A social indicators community project was conducted in 2007 to monitor living standards and quality of life in Rhini, a low-income suburb of Grahamstown, Makana Municipality, South Africa. Since 1994, under democratic rule, considerable progress has been made in service delivery to the formerly disadvantaged in South African society in terms of access to housing, infrastructure, and a social safety net to mitigate the high rate of unemployment. A representative cross-sectional household study (n 1020) conducted in 2007 in Rhini found that a positive assessment of the household’s situation and personal life satisfaction did not reflect better living conditions. Lack of income and employment opportunities appeared to dilute gains from higher living standards. The project also inquired into attitudes to place names and a proposed name change for the city under discussion at the time of the survey. It is argued that a place name with which one can identify may be as important as service delivery to enhance community satisfaction and overall quality of life. Dissatisfied residents who had limited access to services and expressed less civic pride were more likely than others to opt for a proposed name change for the city of Grahamstown that would better reflect the country’s new identity and multicultural heritage. It is concluded that a useful pursuit for community quality-of-life studies in countries undergoing social transformation will be to inquire into the complex combination of factors that drive perceptions of material and symbolic progress.
- Full Text: false
- Date Issued: 2010
- Authors: Moller, Valerie , Radloff, Sarah E
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/68468 , vital:29261 , https://doi.org/10.1007/s11482-010-9092-8 https://doi.org/10.1007/s11482-011-9145-7
- Description: Publisher version , A social indicators community project was conducted in 2007 to monitor living standards and quality of life in Rhini, a low-income suburb of Grahamstown, Makana Municipality, South Africa. Since 1994, under democratic rule, considerable progress has been made in service delivery to the formerly disadvantaged in South African society in terms of access to housing, infrastructure, and a social safety net to mitigate the high rate of unemployment. A representative cross-sectional household study (n 1020) conducted in 2007 in Rhini found that a positive assessment of the household’s situation and personal life satisfaction did not reflect better living conditions. Lack of income and employment opportunities appeared to dilute gains from higher living standards. The project also inquired into attitudes to place names and a proposed name change for the city under discussion at the time of the survey. It is argued that a place name with which one can identify may be as important as service delivery to enhance community satisfaction and overall quality of life. Dissatisfied residents who had limited access to services and expressed less civic pride were more likely than others to opt for a proposed name change for the city of Grahamstown that would better reflect the country’s new identity and multicultural heritage. It is concluded that a useful pursuit for community quality-of-life studies in countries undergoing social transformation will be to inquire into the complex combination of factors that drive perceptions of material and symbolic progress.
- Full Text: false
- Date Issued: 2010
Tuning the physico-electrochemical properties of novel cobalt (II) octa [(3, 5-biscarboxylate)-phenoxy] phthalocyanine complex using phenylamine-functionalised SWCNTs
- Agboola, Bolade O, Ozoemena, Kenneth I, Nyokong, Tebello, Fukuda, Takamitsu, Kobayashi, Nagao
- Authors: Agboola, Bolade O , Ozoemena, Kenneth I , Nyokong, Tebello , Fukuda, Takamitsu , Kobayashi, Nagao
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/261692 , vital:53435 , xlink:href="https://doi.org/10.1016/j.carbon.2009.10.023"
- Description: The integration of phenylamine-functionalised SWCNTs (SWCNT-phenylamine) with a novel cobalt (II) octa[(3,5-biscarboxylate)-phenoxy] phthalocyanine (CoOBPPc) complex has been described. The physical and electrochemical properties of the CoOBPPc-SWCNT-phenylamine hybrid were evaluated using spectroscopy (IR and UV–vis), field emission scanning electron microscopy and electrochemistry (cyclic voltammetry and electrochemical impedance spectroscopy). Integration of SWCNT-phenylamine resulted in the physical transformation of the CoOBCPPc from the usually bluish colour of cobalt phthalocyanine complexes to a beautiful bright green colour. In addition, the heterogeneous electron transfer kinetics and electrocatalytic properties of the CoOBCPPc were greatly enhanced following the attachment of the SWCNT-phenylamine. The potential electrocatalytic application of the hybrid was tested using β-nicotinamide adenine dinucleotide (NADH) as a model biological analyte. Interestingly, the onset oxidation potential of this analyte was significantly reduced (300 mV) by this hybrid compared to the bare electrode.
- Full Text:
- Date Issued: 2010
- Authors: Agboola, Bolade O , Ozoemena, Kenneth I , Nyokong, Tebello , Fukuda, Takamitsu , Kobayashi, Nagao
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/261692 , vital:53435 , xlink:href="https://doi.org/10.1016/j.carbon.2009.10.023"
- Description: The integration of phenylamine-functionalised SWCNTs (SWCNT-phenylamine) with a novel cobalt (II) octa[(3,5-biscarboxylate)-phenoxy] phthalocyanine (CoOBPPc) complex has been described. The physical and electrochemical properties of the CoOBPPc-SWCNT-phenylamine hybrid were evaluated using spectroscopy (IR and UV–vis), field emission scanning electron microscopy and electrochemistry (cyclic voltammetry and electrochemical impedance spectroscopy). Integration of SWCNT-phenylamine resulted in the physical transformation of the CoOBCPPc from the usually bluish colour of cobalt phthalocyanine complexes to a beautiful bright green colour. In addition, the heterogeneous electron transfer kinetics and electrocatalytic properties of the CoOBCPPc were greatly enhanced following the attachment of the SWCNT-phenylamine. The potential electrocatalytic application of the hybrid was tested using β-nicotinamide adenine dinucleotide (NADH) as a model biological analyte. Interestingly, the onset oxidation potential of this analyte was significantly reduced (300 mV) by this hybrid compared to the bare electrode.
- Full Text:
- Date Issued: 2010
at the conference in munich
- Authors: Krueger, Anton
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/229774 , vital:49709 , xlink:href="https://hdl.handle.net/10520/EJC47821"
- Full Text:
- Date Issued: 2010
- Authors: Krueger, Anton
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/229774 , vital:49709 , xlink:href="https://hdl.handle.net/10520/EJC47821"
- Full Text:
- Date Issued: 2010
Social learning processes and nature-culture relations of commercial beekeeping practices as small and medium enterprise development in Zimbabwe
- Authors: Masara, Christopher
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/386545 , vital:68150 , xlink:href="https://www.ajol.info/index.php/sajee/article/view/122860"
- Description: This paper explores social learning processes and nature-culture relations in a context of transition from traditional to commercial beekeeping in Zimbabwe. The contours of social learning provided by Wals (2007) are used to probe the learning processes in the social interactions shaping an emerging community of commercial beekeepers and their small and medium enterprise development practices. The paper illustrates how the practice of engaging communities in participatory expansive learning research could benefit from more refined tools for understanding the open-ended contours of social learning interactions in relation to nature-culture relations.
- Full Text:
- Date Issued: 2010
- Authors: Masara, Christopher
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/386545 , vital:68150 , xlink:href="https://www.ajol.info/index.php/sajee/article/view/122860"
- Description: This paper explores social learning processes and nature-culture relations in a context of transition from traditional to commercial beekeeping in Zimbabwe. The contours of social learning provided by Wals (2007) are used to probe the learning processes in the social interactions shaping an emerging community of commercial beekeepers and their small and medium enterprise development practices. The paper illustrates how the practice of engaging communities in participatory expansive learning research could benefit from more refined tools for understanding the open-ended contours of social learning interactions in relation to nature-culture relations.
- Full Text:
- Date Issued: 2010