Rhodes University Graduation Ceremony 1963
- Authors: Rhodes University
- Date: 1963
- Language: English
- Type: text
- Identifier: vital:8097 , http://hdl.handle.net/10962/d1004418
- Description: Rhodes University Graduation Ceremonies on Saturday 6 April 1963 at 11 a.m. in the University Great Hall [and] Saturday 4 May 1963 at 11 a.m. in the University Great Hall.
- Full Text:
- Date Issued: 1963
- Authors: Rhodes University
- Date: 1963
- Language: English
- Type: text
- Identifier: vital:8097 , http://hdl.handle.net/10962/d1004418
- Description: Rhodes University Graduation Ceremonies on Saturday 6 April 1963 at 11 a.m. in the University Great Hall [and] Saturday 4 May 1963 at 11 a.m. in the University Great Hall.
- Full Text:
- Date Issued: 1963
Rhodes University Graduation Ceremony 2003
- Authors: Rhodes University
- Date: 2003
- Language: English
- Type: text
- Identifier: vital:8144 , http://hdl.handle.net/10962/d1007264
- Description: Rhodes University Graduation Ceremonies [at] 1820 Settlers National Monument Friday, 11 April 2003 at 10:30; 14:30 & 18:00 [and] Saturday, 12 April at 10:30 , Graduation Ceremony Christian Centre, Wyse Street, East London Friday, 9 May 2003 at 18:00 [and] Saturday, 10 May 2003 at 10:30
- Full Text:
- Date Issued: 2003
- Authors: Rhodes University
- Date: 2003
- Language: English
- Type: text
- Identifier: vital:8144 , http://hdl.handle.net/10962/d1007264
- Description: Rhodes University Graduation Ceremonies [at] 1820 Settlers National Monument Friday, 11 April 2003 at 10:30; 14:30 & 18:00 [and] Saturday, 12 April at 10:30 , Graduation Ceremony Christian Centre, Wyse Street, East London Friday, 9 May 2003 at 18:00 [and] Saturday, 10 May 2003 at 10:30
- Full Text:
- Date Issued: 2003
Seducing the people: populism and the challenge to democracy in South Africa
- Authors: Vincent, Louise
- Date: 2011
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/141668 , vital:37995 , DOI: 10.1080/02589001.2011.533056
- Description: Recent ructions in South Africa's ruling African National Congress have been described from time to time in the media as signalling a dangerous shift towards ‘populism’. The article examines this contention. It argues that South Africa is witnessing a significant challenge to the founding precepts of constitutional democracy. This challenge emanates from the (populist) equation of democracy with ‘the will of the people’. The article unpacks some of the implications of reducing democracy to majoritarianism. It provides also an analysis of why populist appeals of various kinds have been so appealing to South African voters 15 years into democracy. The article argues that the challenges that are currently being experienced in relation to democratisation in South Africa have to do with the inherent tension between the animating ideology of democracy, which suggests that power resides with the people, and the practical functioning of democracy, which relies on the devolution of power to the representatives chosen by a section of the people who rely on order and predictability in the polity in order to govern in a workable way. Populist appeals, it is argued, exploit this tension. But what makes it possible for this strategy to succeed is the failure on the part of political elites to engage in the process of building democracy by way of inculcating respect for democratic values.
- Full Text:
- Date Issued: 2011
- Authors: Vincent, Louise
- Date: 2011
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/141668 , vital:37995 , DOI: 10.1080/02589001.2011.533056
- Description: Recent ructions in South Africa's ruling African National Congress have been described from time to time in the media as signalling a dangerous shift towards ‘populism’. The article examines this contention. It argues that South Africa is witnessing a significant challenge to the founding precepts of constitutional democracy. This challenge emanates from the (populist) equation of democracy with ‘the will of the people’. The article unpacks some of the implications of reducing democracy to majoritarianism. It provides also an analysis of why populist appeals of various kinds have been so appealing to South African voters 15 years into democracy. The article argues that the challenges that are currently being experienced in relation to democratisation in South Africa have to do with the inherent tension between the animating ideology of democracy, which suggests that power resides with the people, and the practical functioning of democracy, which relies on the devolution of power to the representatives chosen by a section of the people who rely on order and predictability in the polity in order to govern in a workable way. Populist appeals, it is argued, exploit this tension. But what makes it possible for this strategy to succeed is the failure on the part of political elites to engage in the process of building democracy by way of inculcating respect for democratic values.
- Full Text:
- Date Issued: 2011
Seeing is natural, but viewing is not: teaching visual literacy in a rural classroom
- Mbelani, Madeyandile, Murray, Sarah R
- Authors: Mbelani, Madeyandile , Murray, Sarah R
- Date: 2009
- Language: English
- Type: text , Article
- Identifier: vital:7022 , http://hdl.handle.net/10962/d1007203
- Description: This paper reports on a collaborative action research case study into Grade 10 teaching and learning of visual literacy in a rural high school into the Eastern Cape, South Africa. Visual literacy is a new aspect that has been incorporated in English First Additional Language National Curriculum Statement (Grade 10-12), which has been implemented in Grade 10 from 2006. With the aim of gaining knowledge and improving performance in visual literacy, I designed a unit of lessons, which exposed learners to visual grammar and visual texts and I collected data around the implementation of the lesson unit as evidenced by journal writing, interviews and non-participant observation. The data revealed that visual literacy could be taught meaningfully in a rural high school as the learners could identify, cut, paste and critically discuss elements of visual language and they finally designed their own advertisements in groups. However, the following factors emerged as hindrances to the successful teaching of visual literacy in this case: lack of resources; learners' lack of a foundation in visual literacy from Grades 7-9; and problems revolving around time management and pacing.
- Full Text:
- Date Issued: 2009
- Authors: Mbelani, Madeyandile , Murray, Sarah R
- Date: 2009
- Language: English
- Type: text , Article
- Identifier: vital:7022 , http://hdl.handle.net/10962/d1007203
- Description: This paper reports on a collaborative action research case study into Grade 10 teaching and learning of visual literacy in a rural high school into the Eastern Cape, South Africa. Visual literacy is a new aspect that has been incorporated in English First Additional Language National Curriculum Statement (Grade 10-12), which has been implemented in Grade 10 from 2006. With the aim of gaining knowledge and improving performance in visual literacy, I designed a unit of lessons, which exposed learners to visual grammar and visual texts and I collected data around the implementation of the lesson unit as evidenced by journal writing, interviews and non-participant observation. The data revealed that visual literacy could be taught meaningfully in a rural high school as the learners could identify, cut, paste and critically discuss elements of visual language and they finally designed their own advertisements in groups. However, the following factors emerged as hindrances to the successful teaching of visual literacy in this case: lack of resources; learners' lack of a foundation in visual literacy from Grades 7-9; and problems revolving around time management and pacing.
- Full Text:
- Date Issued: 2009
Social circumstances and cultural beliefs influence maternal nutrition, breastfeeding and child feeding practices in South Africa:
- Authors: Chakona, Gamuchirai
- Date: 2020
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/148627 , vital:38757 , https://nutritionj.biomedcentral.com/articles/10.1186/s12937-020-00566-4
- Description: Maternal and child undernutrition remain prevalent in developing countries with 45 and 11% of child deaths linked to poor nutrition and suboptimal breastfeeding, respectively. This also has adverse effects on child growth and development. The study determined maternal dietary diversity, breastfeeding and, infant and young child feeding (IYCF) practices and identified reasons for such behavior in five rural communities in South Africa, in the context of cultural beliefs and social aspects.
- Full Text:
- Date Issued: 2020
- Authors: Chakona, Gamuchirai
- Date: 2020
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/148627 , vital:38757 , https://nutritionj.biomedcentral.com/articles/10.1186/s12937-020-00566-4
- Description: Maternal and child undernutrition remain prevalent in developing countries with 45 and 11% of child deaths linked to poor nutrition and suboptimal breastfeeding, respectively. This also has adverse effects on child growth and development. The study determined maternal dietary diversity, breastfeeding and, infant and young child feeding (IYCF) practices and identified reasons for such behavior in five rural communities in South Africa, in the context of cultural beliefs and social aspects.
- Full Text:
- Date Issued: 2020
Some aspects of plant nutrition : inaugural lecture delivered at Rhodes University
- Authors: Twyman, Edgar S
- Date: 1954
- Language: English
- Type: Text
- Identifier: vital:675 , http://hdl.handle.net/10962/d1020744
- Description: Inaugural lecture delivered at Rhodes University , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 1954
- Authors: Twyman, Edgar S
- Date: 1954
- Language: English
- Type: Text
- Identifier: vital:675 , http://hdl.handle.net/10962/d1020744
- Description: Inaugural lecture delivered at Rhodes University , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 1954
Spatial and seasonal distribution patterns of the ragged-tooth shark Carcharias taurus along the coast of South Africa
- Dicken, Matthew L, Booth, Anthony J, Smale, Malcolm J
- Authors: Dicken, Matthew L , Booth, Anthony J , Smale, Malcolm J
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/127008 , vital:35943 , https://doi.10.2989/18142320609504210
- Description: Off South Africa, the ragged-tooth shark Carcharias Taurus has been occasionally reported from the West Coast, but it is more commonly found along the East and South coasts from Cape Town to northern KwaZulu-Natal (KZN) (Bass et al. 1975, Smale 2002). Mating is thought to occur off the south coast of KZN from October to late November (G Cliff, Natal Sharks Board, unpublished data). Pregnant females then move northward to spend the early part of their gestation in the warmer waters of northern KZN and possibly southern Moçambique. During July and August, the near-term pregnant females begin to move southwards towards the cooler waters of the Eastern Cape (Wallett 1973, Bass et al. 1975, G Cliff, unpublished data), where they give birth from September to November (Smale 2002). After parturition, many of the females migrate back to KZN. The whereabouts of mature males outside of the mating season is unclear. These broadscale distribution and migratory habits for C. taurus have been inferred from limited catch records obtained for only parts of its range along the South African coast.
- Full Text:
- Date Issued: 2010
- Authors: Dicken, Matthew L , Booth, Anthony J , Smale, Malcolm J
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/127008 , vital:35943 , https://doi.10.2989/18142320609504210
- Description: Off South Africa, the ragged-tooth shark Carcharias Taurus has been occasionally reported from the West Coast, but it is more commonly found along the East and South coasts from Cape Town to northern KwaZulu-Natal (KZN) (Bass et al. 1975, Smale 2002). Mating is thought to occur off the south coast of KZN from October to late November (G Cliff, Natal Sharks Board, unpublished data). Pregnant females then move northward to spend the early part of their gestation in the warmer waters of northern KZN and possibly southern Moçambique. During July and August, the near-term pregnant females begin to move southwards towards the cooler waters of the Eastern Cape (Wallett 1973, Bass et al. 1975, G Cliff, unpublished data), where they give birth from September to November (Smale 2002). After parturition, many of the females migrate back to KZN. The whereabouts of mature males outside of the mating season is unclear. These broadscale distribution and migratory habits for C. taurus have been inferred from limited catch records obtained for only parts of its range along the South African coast.
- Full Text:
- Date Issued: 2010
Sperm morphology in four species of African platypleurine cicadas (Hemiptera: Cicadomorpha: Cicadidae)
- Chawanji, A S, Hodgson, Alan N, Villet, Martin H
- Authors: Chawanji, A S , Hodgson, Alan N , Villet, Martin H
- Date: 2005
- Language: English
- Type: Article
- Identifier: vital:6917 , http://hdl.handle.net/10962/d1011880
- Description: Mature spermatozoa from four species of platypleurine cicadas (Albanycada albigera, Azanicada zuluensis, Platypleura capensis and P. hirtipennis) were examined by light and electron microscopy. The filiform sperm have a similar ultrastructure in all species but notable variations were found in sperm dimensions. All species produce more than one discrete length of nucleated, motile sperm, a form of polymorphism termed polymegaly. Polymegaly is expressed in two ways: sperm have bi- or trimodal head and tail lengths. The anterior parts of sperm heads are embedded in an elongate homogenous matrix forming a spermatodesm. The conical acrosome is deeply invaginated posteriorly, and sits on top of the nucleus. The acrosomal contents are differentiated internally with an electron-lucent central medulla and a denser cortex. The homogenously electron-dense nucleus is pointed anteriorly and is generally cylindrical, although posteriorly there is a lateral invagination that extends part-way along the nucleus. This invagination houses fine granular material of the centriolar adjunct. Vesicle-like elements that are associated with both the posterior nucleus and the centriolar adjunct are also found within the invagination. Immediately posterior of and adjoining the centriolar adjunct is a pair of mitochondrial derivatives that are elongated and extend for almost the entire length of the tail. The absence of accessory bodies in cicada sperm suggests that within the Cicadomorpha, the families Cicadidae and Cercopidae are closely affiliated.
- Full Text:
- Date Issued: 2005
- Authors: Chawanji, A S , Hodgson, Alan N , Villet, Martin H
- Date: 2005
- Language: English
- Type: Article
- Identifier: vital:6917 , http://hdl.handle.net/10962/d1011880
- Description: Mature spermatozoa from four species of platypleurine cicadas (Albanycada albigera, Azanicada zuluensis, Platypleura capensis and P. hirtipennis) were examined by light and electron microscopy. The filiform sperm have a similar ultrastructure in all species but notable variations were found in sperm dimensions. All species produce more than one discrete length of nucleated, motile sperm, a form of polymorphism termed polymegaly. Polymegaly is expressed in two ways: sperm have bi- or trimodal head and tail lengths. The anterior parts of sperm heads are embedded in an elongate homogenous matrix forming a spermatodesm. The conical acrosome is deeply invaginated posteriorly, and sits on top of the nucleus. The acrosomal contents are differentiated internally with an electron-lucent central medulla and a denser cortex. The homogenously electron-dense nucleus is pointed anteriorly and is generally cylindrical, although posteriorly there is a lateral invagination that extends part-way along the nucleus. This invagination houses fine granular material of the centriolar adjunct. Vesicle-like elements that are associated with both the posterior nucleus and the centriolar adjunct are also found within the invagination. Immediately posterior of and adjoining the centriolar adjunct is a pair of mitochondrial derivatives that are elongated and extend for almost the entire length of the tail. The absence of accessory bodies in cicada sperm suggests that within the Cicadomorpha, the families Cicadidae and Cercopidae are closely affiliated.
- Full Text:
- Date Issued: 2005
Stigma resistance in online child free communities : the limitations of choice rhetoric
- Morison, Tracy, Macleod, Catriona I, Lynch, Ingrid, Mijas, Magda, Shivakumar, Seemanthini T
- Authors: Morison, Tracy , Macleod, Catriona I , Lynch, Ingrid , Mijas, Magda , Shivakumar, Seemanthini T
- Date: 2015
- Language: English
- Type: Article
- Identifier: vital:6311 , http://hdl.handle.net/10962/d1019799 , http://journals.sagepub.com/doi/10.1177/0361684315603657
- Description: People who are voluntarily childless, or ‘‘childfree,’’ face considerable stigma. Researchers have begun to explore how these individuals respond to stigma, usually focusing on interpersonal stigma management strategies. We explored participants’ responses to stigma in a way that is cognisant of broader social norms and gender power relations. Using a feminist discursive psychology framework, we analysed women’s and men’s computer-assisted communication about their childfree status. Our analysis draws attention to ‘‘identity work’’ in the context of stigma. We show how the strategic use of ‘‘choice’’ rhetoric allowed participants to avoid stigmatised identities and was used in two contradictory ways. On the one hand, participants drew on a ‘‘childfree-by-choice script,’’ which enabled them to hold a positive identity of themselves as autonomous, rational, and responsible decision makers. On the other hand, they mobilised a ‘‘disavowal of choice script’’ that allowed a person who is unable to choose childlessness (for various reasons) to hold a blameless identity regarding deviation from the norm of parenthood. We demonstrate how choice rhetoric allowed participants to resist stigma and challenge pronatalism to some extent; we discuss the political potential of these scripts for reproductive freedom.
- Full Text:
- Date Issued: 2015
- Authors: Morison, Tracy , Macleod, Catriona I , Lynch, Ingrid , Mijas, Magda , Shivakumar, Seemanthini T
- Date: 2015
- Language: English
- Type: Article
- Identifier: vital:6311 , http://hdl.handle.net/10962/d1019799 , http://journals.sagepub.com/doi/10.1177/0361684315603657
- Description: People who are voluntarily childless, or ‘‘childfree,’’ face considerable stigma. Researchers have begun to explore how these individuals respond to stigma, usually focusing on interpersonal stigma management strategies. We explored participants’ responses to stigma in a way that is cognisant of broader social norms and gender power relations. Using a feminist discursive psychology framework, we analysed women’s and men’s computer-assisted communication about their childfree status. Our analysis draws attention to ‘‘identity work’’ in the context of stigma. We show how the strategic use of ‘‘choice’’ rhetoric allowed participants to avoid stigmatised identities and was used in two contradictory ways. On the one hand, participants drew on a ‘‘childfree-by-choice script,’’ which enabled them to hold a positive identity of themselves as autonomous, rational, and responsible decision makers. On the other hand, they mobilised a ‘‘disavowal of choice script’’ that allowed a person who is unable to choose childlessness (for various reasons) to hold a blameless identity regarding deviation from the norm of parenthood. We demonstrate how choice rhetoric allowed participants to resist stigma and challenge pronatalism to some extent; we discuss the political potential of these scripts for reproductive freedom.
- Full Text:
- Date Issued: 2015
Students’ reception of peer assessment of group-work contributions: problematics in terms of race and gender emerging from a South African case study
- Thondhlana, Gladman, Belluigi, Dina Z
- Authors: Thondhlana, Gladman , Belluigi, Dina Z
- Date: 2016
- Language: English
- Type: article , text
- Identifier: http://hdl.handle.net/10962/59784 , vital:27649 , https://doi.org/10.1080/02602938.2016.1235133
- Description: Participatory assessment is increasingly employed in higher education worldwide as a formative mechanism to support students’ active learning. But do students in an increasingly relationally diverse environment perceive that peer assessment of individuals’ contributions to group-work tasks enhances their learning? Recognising the impact of students’ conceptions on the quality of their learning, this study considers students’ perspectives of peer assessment of group-work contributions at a South African university. Questionnaires elicited students’ perspectives of and general attitudes towards assessment of and by their peers. A growing measure of discontent with the process of assessing peer contributions to group tasks emerged, including actual and perceived racial and gender stereotyping, and related rejection-sensitivity. These initial findings were checked against the students’ experiences in a report-and-respond process that enabled probing discussions of the interpretations. This paper examines and explores the implications of such identifications and receptions for learning engagement and group-work curriculum development in the context of a rapidly transforming higher education sector.
- Full Text: false
- Date Issued: 2016
- Authors: Thondhlana, Gladman , Belluigi, Dina Z
- Date: 2016
- Language: English
- Type: article , text
- Identifier: http://hdl.handle.net/10962/59784 , vital:27649 , https://doi.org/10.1080/02602938.2016.1235133
- Description: Participatory assessment is increasingly employed in higher education worldwide as a formative mechanism to support students’ active learning. But do students in an increasingly relationally diverse environment perceive that peer assessment of individuals’ contributions to group-work tasks enhances their learning? Recognising the impact of students’ conceptions on the quality of their learning, this study considers students’ perspectives of peer assessment of group-work contributions at a South African university. Questionnaires elicited students’ perspectives of and general attitudes towards assessment of and by their peers. A growing measure of discontent with the process of assessing peer contributions to group tasks emerged, including actual and perceived racial and gender stereotyping, and related rejection-sensitivity. These initial findings were checked against the students’ experiences in a report-and-respond process that enabled probing discussions of the interpretations. This paper examines and explores the implications of such identifications and receptions for learning engagement and group-work curriculum development in the context of a rapidly transforming higher education sector.
- Full Text: false
- Date Issued: 2016
Synthesis, characterization and biological activity of some Dithiourea Derivatives:
- Odame, Felix, Hosten, Eric, Krause, Jason, Isaacs, Michelle, Hoppe, Heinrich C, Khanye, Setshaba D, Sayed, Yasien, Frost, Carminita, Lobb, Kevin A, Tshentu, Zenixole
- Authors: Odame, Felix , Hosten, Eric , Krause, Jason , Isaacs, Michelle , Hoppe, Heinrich C , Khanye, Setshaba D , Sayed, Yasien , Frost, Carminita , Lobb, Kevin A , Tshentu, Zenixole
- Date: 2020
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/163046 , vital:41007 , DOI: 10.17344/acsi.2019.5689
- Description: Novel dithiourea derivatives have been designed as HIV-1 protease inhibitors using Autodock 4.2, synthesized and characterized by spectroscopic methods and microanalysis.
- Full Text:
- Date Issued: 2020
- Authors: Odame, Felix , Hosten, Eric , Krause, Jason , Isaacs, Michelle , Hoppe, Heinrich C , Khanye, Setshaba D , Sayed, Yasien , Frost, Carminita , Lobb, Kevin A , Tshentu, Zenixole
- Date: 2020
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/163046 , vital:41007 , DOI: 10.17344/acsi.2019.5689
- Description: Novel dithiourea derivatives have been designed as HIV-1 protease inhibitors using Autodock 4.2, synthesized and characterized by spectroscopic methods and microanalysis.
- Full Text:
- Date Issued: 2020
Systematics and distribution of eels of the Muraenesox group (Anguilliformes, Muraenesocidae): a preliminary report and key
- Castle, P H J (Peter Henry John), Williamson, Gordon R, Rhodes University. J.L.B. Smith Institute of Ichthyology
- Authors: Castle, P H J (Peter Henry John) , Williamson, Gordon R , Rhodes University. J.L.B. Smith Institute of Ichthyology
- Date: 1975-05
- Subjects: Fishes -- Classification , Muraenesox -- Classification , Muraenesocidae -- Classification
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/69746 , vital:29575 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
- Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 15 , A study of the eels which have been referred to Muraenesox McClelland clarifies taxonomic confusion in this group and shows it to contain three genera and seven species. M cinereus (Forsskål, 1775) occurs from the Red Sea across the Indian Ocean northwards to Japan . M. bagio (Hamilton, 1822) has a wider distribution from South Africa throughout the Indo-west Pacific north to Japan and south to Sydney. Congresox Gill is revived for C. talabon (Cuvier, 1829) and C. talabonoides (Bleeker, 1853) both of which occur in the central Indo-west Pacific. Cynoponticus Costa is represented by C. savanna (Bancroft, 1831) in the West Atlantic, C. ferox Costa, 1845 in the East Atlantic and Mediterranean and C. coniceps (Jordan and Gilbert, 1881) in the central East Pacific.
- Full Text:
- Date Issued: 1975-05
- Authors: Castle, P H J (Peter Henry John) , Williamson, Gordon R , Rhodes University. J.L.B. Smith Institute of Ichthyology
- Date: 1975-05
- Subjects: Fishes -- Classification , Muraenesox -- Classification , Muraenesocidae -- Classification
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/69746 , vital:29575 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
- Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 15 , A study of the eels which have been referred to Muraenesox McClelland clarifies taxonomic confusion in this group and shows it to contain three genera and seven species. M cinereus (Forsskål, 1775) occurs from the Red Sea across the Indian Ocean northwards to Japan . M. bagio (Hamilton, 1822) has a wider distribution from South Africa throughout the Indo-west Pacific north to Japan and south to Sydney. Congresox Gill is revived for C. talabon (Cuvier, 1829) and C. talabonoides (Bleeker, 1853) both of which occur in the central Indo-west Pacific. Cynoponticus Costa is represented by C. savanna (Bancroft, 1831) in the West Atlantic, C. ferox Costa, 1845 in the East Atlantic and Mediterranean and C. coniceps (Jordan and Gilbert, 1881) in the central East Pacific.
- Full Text:
- Date Issued: 1975-05
Targeting conserved pathways as a strategy for novel drug development: disabling the cellular stress response:
- Edkins, Adrienne L, Blatch, Gregory L
- Authors: Edkins, Adrienne L , Blatch, Gregory L
- Date: 2012
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/165129 , vital:41211 , ISBN 978-3-642-28174-7 , DOI: 10.1007/978-3-642-28175-4_4
- Description: The ability to respond to and cope with stress at a molecular level is essential for cell survival. The stress response is conserved across organisms by the expression of a group of molecular chaperones known as heat shock proteins (HSP). HSP are ubiquitous and highly conserved proteins that regulate cellular protein homeostasis and trafficking under physiological and stressful conditions, including diseases such as cancer and malaria. HSP are good drug targets for the treatment of human diseases, as the significant functional and structural data available suggest that they are essential for cell survival and that, despite conservation across species, there are biophysical and biochemical differences between HSP in normal and disease states that allow HSP to be selectively targeted. In this chapter, we review the international status of this area of research and highlight progress by us and other African researchers towards the characterisation and targeting of HSP from humans and parasites from Plasmodium and Trypanosoma as drug targets.
- Full Text:
- Date Issued: 2012
- Authors: Edkins, Adrienne L , Blatch, Gregory L
- Date: 2012
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/165129 , vital:41211 , ISBN 978-3-642-28174-7 , DOI: 10.1007/978-3-642-28175-4_4
- Description: The ability to respond to and cope with stress at a molecular level is essential for cell survival. The stress response is conserved across organisms by the expression of a group of molecular chaperones known as heat shock proteins (HSP). HSP are ubiquitous and highly conserved proteins that regulate cellular protein homeostasis and trafficking under physiological and stressful conditions, including diseases such as cancer and malaria. HSP are good drug targets for the treatment of human diseases, as the significant functional and structural data available suggest that they are essential for cell survival and that, despite conservation across species, there are biophysical and biochemical differences between HSP in normal and disease states that allow HSP to be selectively targeted. In this chapter, we review the international status of this area of research and highlight progress by us and other African researchers towards the characterisation and targeting of HSP from humans and parasites from Plasmodium and Trypanosoma as drug targets.
- Full Text:
- Date Issued: 2012
Temporal and spatial variability in stable isotope ratios of SPM link to local hydrography and longer term SPM averages suggest heavy dependence of mussels on nearshore production
- Hill, Jaclyn M, McQuaid, Christopher D, Kaehler, Sven
- Authors: Hill, Jaclyn M , McQuaid, Christopher D , Kaehler, Sven
- Date: 2008
- Language: English
- Type: text , Article
- Identifier: vital:6969 , http://hdl.handle.net/10962/d1012034
- Description: Temporal changes in hydrography affect suspended particulate matter (SPM) composition and distribution in coastal systems, potentially influencing the diets of suspension feeders. Temporal variation in SPM and in the diet of the mussel Perna perna, were investigated using stable isotope analysis. The δ13C and δ15 N ratios of SPM, mussels and macroalgae were determined monthly, with SPM samples collected along a 10 km onshore–offshore transect, over 14 months at Kenton-on-Sea, on the south coast of South Africa. Clear nearshore (0 km) to offshore (10 km) carbon depletion gradients were seen in SPM during all months and extended for 50 km offshore on one occasion. Carbon enrichment of coastal SPM in winter (June–August 2004 and May 2005) indicated temporal changes in the nearshore detrital pool, presumably reflecting changes in macroalgal detritus, linked to local changes in coastal hydrography and algal seasonality. Nitrogen patterns were less clear, with SPM enrichment seen between July and October 2004 from 0 to 10 km. Nearshore SPM demonstrated cyclical patterns in carbon over 24-h periods that correlated closely with tidal cycles and mussel carbon signatures, sampled monthly, demonstrated fluctuations that could not be correlated to seasonal or monthly changes in SPM. Macroalgae showed extreme variability in isotopic signatures, with no discernable patterns. IsoSource mixing models indicated over 50% reliance of mussel tissue on nearshore carbon, highlighting the importance of nearshore SPM in mussel diet. Overall, carbon variation in SPM at both large and small temporal scales can be related to hydrographic processes, but is masked in mussels by long-term isotope integration.
- Full Text:
- Date Issued: 2008
- Authors: Hill, Jaclyn M , McQuaid, Christopher D , Kaehler, Sven
- Date: 2008
- Language: English
- Type: text , Article
- Identifier: vital:6969 , http://hdl.handle.net/10962/d1012034
- Description: Temporal changes in hydrography affect suspended particulate matter (SPM) composition and distribution in coastal systems, potentially influencing the diets of suspension feeders. Temporal variation in SPM and in the diet of the mussel Perna perna, were investigated using stable isotope analysis. The δ13C and δ15 N ratios of SPM, mussels and macroalgae were determined monthly, with SPM samples collected along a 10 km onshore–offshore transect, over 14 months at Kenton-on-Sea, on the south coast of South Africa. Clear nearshore (0 km) to offshore (10 km) carbon depletion gradients were seen in SPM during all months and extended for 50 km offshore on one occasion. Carbon enrichment of coastal SPM in winter (June–August 2004 and May 2005) indicated temporal changes in the nearshore detrital pool, presumably reflecting changes in macroalgal detritus, linked to local changes in coastal hydrography and algal seasonality. Nitrogen patterns were less clear, with SPM enrichment seen between July and October 2004 from 0 to 10 km. Nearshore SPM demonstrated cyclical patterns in carbon over 24-h periods that correlated closely with tidal cycles and mussel carbon signatures, sampled monthly, demonstrated fluctuations that could not be correlated to seasonal or monthly changes in SPM. Macroalgae showed extreme variability in isotopic signatures, with no discernable patterns. IsoSource mixing models indicated over 50% reliance of mussel tissue on nearshore carbon, highlighting the importance of nearshore SPM in mussel diet. Overall, carbon variation in SPM at both large and small temporal scales can be related to hydrographic processes, but is masked in mussels by long-term isotope integration.
- Full Text:
- Date Issued: 2008
Temporal scales of variation in settlement and recruitment of the mussel Perna perna (Linnaeus, 1758)
- Porri, Francesca, McQuaid, Christopher D, Radloff, Sarah E
- Authors: Porri, Francesca , McQuaid, Christopher D , Radloff, Sarah E
- Date: 2006
- Language: English
- Type: Article
- Identifier: vital:6963 , http://hdl.handle.net/10962/d1012026 , http://dx.doi.org/10.1016/j.jembe.2005.11.008
- Description: Population dynamics of many intertidal organisms are strongly affected by the abundance and distribution of larvae arriving on the shore. In particular, not only absolute numbers of settlers but also the degree of synchronisation of settlement can have a strong influence on whether density-dependent or density-independent processes shape adult shape populations. Temporal variation in rates of settlement and recruitment of the mussel Perna perna on the south coast of South Africa was investigated using a nested spatial design at different temporal scales. Variability in settlement at spring tides was examined at two temporal scales: lunar (to investigate the effect of state of the moon on settlement) and tidal (to investigate the influence of state of the tide on mussel settlement). Recruitment over neap tides was examined at one temporal scale, fortnight (to investigate the effect of date on mussel recruitment). Strong temporal variation was evident for both settlement and recruitment, but not at all time scales. Distinct peaks of settler/recruit abundance were observed during the lunar and neap tide studies. Recruitment intensity differed over the course of the year, and pulsing of recruitment was generally synchronised among locations. However, the strength of pulsing differed dramatically among locations, giving a significant interaction between fortnight and location. The finest temporal scale, investigated in the tidal study, did not reveal a significant effect of the state of the tide on settlement. The state of the moon (new or full) was not significant as a main factor (p = 0.052), although generally more settlers arrived on the shore during new moon. Phase of the moon appeared to have an effect on settler abundances, but only when and where densities were high.
- Full Text:
- Date Issued: 2006
- Authors: Porri, Francesca , McQuaid, Christopher D , Radloff, Sarah E
- Date: 2006
- Language: English
- Type: Article
- Identifier: vital:6963 , http://hdl.handle.net/10962/d1012026 , http://dx.doi.org/10.1016/j.jembe.2005.11.008
- Description: Population dynamics of many intertidal organisms are strongly affected by the abundance and distribution of larvae arriving on the shore. In particular, not only absolute numbers of settlers but also the degree of synchronisation of settlement can have a strong influence on whether density-dependent or density-independent processes shape adult shape populations. Temporal variation in rates of settlement and recruitment of the mussel Perna perna on the south coast of South Africa was investigated using a nested spatial design at different temporal scales. Variability in settlement at spring tides was examined at two temporal scales: lunar (to investigate the effect of state of the moon on settlement) and tidal (to investigate the influence of state of the tide on mussel settlement). Recruitment over neap tides was examined at one temporal scale, fortnight (to investigate the effect of date on mussel recruitment). Strong temporal variation was evident for both settlement and recruitment, but not at all time scales. Distinct peaks of settler/recruit abundance were observed during the lunar and neap tide studies. Recruitment intensity differed over the course of the year, and pulsing of recruitment was generally synchronised among locations. However, the strength of pulsing differed dramatically among locations, giving a significant interaction between fortnight and location. The finest temporal scale, investigated in the tidal study, did not reveal a significant effect of the state of the tide on settlement. The state of the moon (new or full) was not significant as a main factor (p = 0.052), although generally more settlers arrived on the shore during new moon. Phase of the moon appeared to have an effect on settler abundances, but only when and where densities were high.
- Full Text:
- Date Issued: 2006
The advantages and disadvantages of long-term collective bargaining within the Metal & Engineering Industry and Mining Industry
- Labour Research Service (LRS)
- Authors: Labour Research Service (LRS)
- Date: 2002-11
- Subjects: Uncatalogued
- Language: English
- Type: book , text
- Identifier: http://hdl.handle.net/10962/60190 , vital:27745
- Description: This report highlights the advantages and disadvantages of long-term collective bargaining within the Metal & Engineering and Mining industries. It does not aim to set standards but to provide useful information on the experiences of negotiators bargaining for multi-year agreements. To this end a questionnaire was designed to draw commentary from various role-players within the abovementioned industries on the issue under investigation.
- Full Text:
- Date Issued: 2002-11
- Authors: Labour Research Service (LRS)
- Date: 2002-11
- Subjects: Uncatalogued
- Language: English
- Type: book , text
- Identifier: http://hdl.handle.net/10962/60190 , vital:27745
- Description: This report highlights the advantages and disadvantages of long-term collective bargaining within the Metal & Engineering and Mining industries. It does not aim to set standards but to provide useful information on the experiences of negotiators bargaining for multi-year agreements. To this end a questionnaire was designed to draw commentary from various role-players within the abovementioned industries on the issue under investigation.
- Full Text:
- Date Issued: 2002-11
The advantages and disadvantages of long-term collective bargaining within the Metal & Engineering Industry and Mining Industry
- Labour Research Service (Cape Town, South Africa)
- Authors: Labour Research Service (Cape Town, South Africa)
- Date: 2002-11
- Subjects: Collective bargaining , Labour unions
- Language: English
- Type: text , pamphlet
- Identifier: http://hdl.handle.net/10962/111475 , vital:33465
- Description: In 1924 the Industrial Conciliation Act was passed setting up a system of centralised collective bargaining for white workers. Black employees were excluded from this legislation. The Act allowed for the establishment of industrial councils that set wages and conditions of sendee for white workers. The 1970’s was marked by a rapid increase in the number of black workers especially in the manufacturing industries. This led to the rise in militant black trade unions fighting against low wages and poor working conditions of black employees. The state then passed the Black Labour Relations Act of 1973 through which liaison and works committees were set up at plant level. These committees were however, rejected by black trade unions as they did not ensure any improvements in the working conditions of black workers. As the militancy of black trade unions began to grow, a new Industrial Conciliation Act was legislated in 1979 that included all black workers (although migrant workers were initially excluded). The Act allowed for the registration of black unions and participation in centralised bargaining within the industrial councils. The new law still did not protect the rights of black workers and the trade unions instead adopted a strategy of strengthening plant level negotiations as opposed to centralised bargaining. In the late 1980’s as the trade unions strengthened their power base on the shopfloor, they once again changed their strategy and opted for industry wide collective bargaining. This move came about as trade unions realised the potential of industry wide industrial action to ensure improved wages and working conditions of black workers. This move also allowed for the bargaining of non-wage benefits such as maternity benefits, provident funds, health and safety issues, etc. Employers were now opposed to centralised bargaining and reintroduced plant level negotiations by closing several key industrial councils. The 1990’s was characterised by increased pressure from trade unions to legislate centralised bargaining. The Labour Relations Act (LRA) of 1995 was enacted to allow for the establishment of bargaining councils, which replaced industrial councils. However, the LRA only facilitates and promotes centralised bargaining but does not make it compulsory. With the push for increased centralised bargaining came the expansion of the bargaining agenda to include industry' and sector policies, workplace and sector restructuring. HIV/AIDS policies, employment equity, skills training, etc. Employers then began to argue for the introduction of multi-year agreements so that sufficient time could be given to incorporate not only'wage issues but also other socio-economic concerns raised by workers. With the onset of globalisation came the pressures towards increased international competition, restructuring of workplaces, retrenchments, casualisation, privatisation, etc. Collective bargaining is thus being conducted under difficult economic pressures as workers lose their jobs and inflation rates are escalating. Within this climate employers are set to push for the reintroduction of enterprise level bargaining especially in sectors where trade union militancy is strongest. International trends show an increase in - enterprise level bargaining where individual contracts are negotiated. In addition, where centralised bargaining is set to continue, employers will fight to introduce multi-year agreements to allow for more time to phase in non-wage socio-economic demands placed on the negotiating table by workers.
- Full Text:
- Date Issued: 2002-11
- Authors: Labour Research Service (Cape Town, South Africa)
- Date: 2002-11
- Subjects: Collective bargaining , Labour unions
- Language: English
- Type: text , pamphlet
- Identifier: http://hdl.handle.net/10962/111475 , vital:33465
- Description: In 1924 the Industrial Conciliation Act was passed setting up a system of centralised collective bargaining for white workers. Black employees were excluded from this legislation. The Act allowed for the establishment of industrial councils that set wages and conditions of sendee for white workers. The 1970’s was marked by a rapid increase in the number of black workers especially in the manufacturing industries. This led to the rise in militant black trade unions fighting against low wages and poor working conditions of black employees. The state then passed the Black Labour Relations Act of 1973 through which liaison and works committees were set up at plant level. These committees were however, rejected by black trade unions as they did not ensure any improvements in the working conditions of black workers. As the militancy of black trade unions began to grow, a new Industrial Conciliation Act was legislated in 1979 that included all black workers (although migrant workers were initially excluded). The Act allowed for the registration of black unions and participation in centralised bargaining within the industrial councils. The new law still did not protect the rights of black workers and the trade unions instead adopted a strategy of strengthening plant level negotiations as opposed to centralised bargaining. In the late 1980’s as the trade unions strengthened their power base on the shopfloor, they once again changed their strategy and opted for industry wide collective bargaining. This move came about as trade unions realised the potential of industry wide industrial action to ensure improved wages and working conditions of black workers. This move also allowed for the bargaining of non-wage benefits such as maternity benefits, provident funds, health and safety issues, etc. Employers were now opposed to centralised bargaining and reintroduced plant level negotiations by closing several key industrial councils. The 1990’s was characterised by increased pressure from trade unions to legislate centralised bargaining. The Labour Relations Act (LRA) of 1995 was enacted to allow for the establishment of bargaining councils, which replaced industrial councils. However, the LRA only facilitates and promotes centralised bargaining but does not make it compulsory. With the push for increased centralised bargaining came the expansion of the bargaining agenda to include industry' and sector policies, workplace and sector restructuring. HIV/AIDS policies, employment equity, skills training, etc. Employers then began to argue for the introduction of multi-year agreements so that sufficient time could be given to incorporate not only'wage issues but also other socio-economic concerns raised by workers. With the onset of globalisation came the pressures towards increased international competition, restructuring of workplaces, retrenchments, casualisation, privatisation, etc. Collective bargaining is thus being conducted under difficult economic pressures as workers lose their jobs and inflation rates are escalating. Within this climate employers are set to push for the reintroduction of enterprise level bargaining especially in sectors where trade union militancy is strongest. International trends show an increase in - enterprise level bargaining where individual contracts are negotiated. In addition, where centralised bargaining is set to continue, employers will fight to introduce multi-year agreements to allow for more time to phase in non-wage socio-economic demands placed on the negotiating table by workers.
- Full Text:
- Date Issued: 2002-11
The availability of non-timber forest products under forest succession on abandoned fields along the Wild Coast, South Africa
- Njwaxu, Afrika, Shackleton, Charlie M
- Authors: Njwaxu, Afrika , Shackleton, Charlie M
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/177565 , vital:42833 , https://doi.org/10.3390/f10121093
- Description: Large swathes of arable fields have been abandoned in many areas of the world over the last few decades driven by a multitude of local and broader-scale factors. Many former fields experience a change in vegetation composition and structure post-abandonment, typically through a process of plant succession. The changes in species and abundance mean that the nature and quantity of ecosystem services provided by the former fields also varies. We examined the types of provisioning services obtained from non-timber forest products (NTFPs) with increasing age since field abandonment. We sampled 43 former fields ranging in age since abandonment from approximately 7 to 55 years, and seven plots in intact forests. We held seven focus group discussions with local residents to determine uses of species found in the former fields.
- Full Text:
- Date Issued: 2019
- Authors: Njwaxu, Afrika , Shackleton, Charlie M
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/177565 , vital:42833 , https://doi.org/10.3390/f10121093
- Description: Large swathes of arable fields have been abandoned in many areas of the world over the last few decades driven by a multitude of local and broader-scale factors. Many former fields experience a change in vegetation composition and structure post-abandonment, typically through a process of plant succession. The changes in species and abundance mean that the nature and quantity of ecosystem services provided by the former fields also varies. We examined the types of provisioning services obtained from non-timber forest products (NTFPs) with increasing age since field abandonment. We sampled 43 former fields ranging in age since abandonment from approximately 7 to 55 years, and seven plots in intact forests. We held seven focus group discussions with local residents to determine uses of species found in the former fields.
- Full Text:
- Date Issued: 2019
The Basis of Unity and The Building of Unity
- Date: 1945-01
- Subjects: Government, Resistance to -- South Africa , South Africa -- History -- 20th century , South Africa -- Politics and government
- Language: English
- Type: text , Article
- Identifier: http://hdl.handle.net/10948/33847 , vital:33089 , Bulk File 7
- Description: This publication consists of two addresses delivered at the Third Unity Conference held by the Non-European Unity Movement.
- Full Text: false
- Date Issued: 1945-01
- Date: 1945-01
- Subjects: Government, Resistance to -- South Africa , South Africa -- History -- 20th century , South Africa -- Politics and government
- Language: English
- Type: text , Article
- Identifier: http://hdl.handle.net/10948/33847 , vital:33089 , Bulk File 7
- Description: This publication consists of two addresses delivered at the Third Unity Conference held by the Non-European Unity Movement.
- Full Text: false
- Date Issued: 1945-01