‘The Gentle Art of Letting the Other Fellow Have Your Own Way': Viewpoints on a media narrative used to promote the proposed N2 toll road
- Farrington, Katie, Davies, Kate
- Authors: Farrington, Katie , Davies, Kate
- Date: 2004
- Language: English
- Type: Article
- Identifier: vital:6098 , http://hdl.handle.net/10962/d1008628
- Description: This viewpoint paper is written in response to a South African National Roads Agency (SANRAL) advertorial published in various South African regional newspapers in February 2004. We highlight the importance of developing ‘media literacy’ – reading skills which enable the critical deconstruction of media texts. We explore, more specifically, the public relations strategies used by large corporations, and the media’s role as disseminators of corporate marketing material.We also look at the relevance in identifying the language and discourse positioning the writer, photographer, reader and their choice representative medium.
- Full Text:
- Date Issued: 2004
- Authors: Farrington, Katie , Davies, Kate
- Date: 2004
- Language: English
- Type: Article
- Identifier: vital:6098 , http://hdl.handle.net/10962/d1008628
- Description: This viewpoint paper is written in response to a South African National Roads Agency (SANRAL) advertorial published in various South African regional newspapers in February 2004. We highlight the importance of developing ‘media literacy’ – reading skills which enable the critical deconstruction of media texts. We explore, more specifically, the public relations strategies used by large corporations, and the media’s role as disseminators of corporate marketing material.We also look at the relevance in identifying the language and discourse positioning the writer, photographer, reader and their choice representative medium.
- Full Text:
- Date Issued: 2004
Workers News - Special Issue
- Cape Town Municipal Workers Association
- Authors: Cape Town Municipal Workers Association
- Date: Jan 1985
- Subjects: Cape Town Municipal Workers Association
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/135520 , vital:37273
- Description: Members have shown tremendous interest in the Industrial Court Hearing relating to the Wage Dispute with the City Council. In addition to personal enquiries, we have received hundreds of telephone calls asking for progress reports. The calls are still coming in. It is in response to this clamour for information, as well as the Union’s commitment to keep members informed, that it was decided to bring out this SPECIAL ISSUE of WORKER NEWS. We hope that members will now be better informed on the latest developments.
- Full Text:
- Date Issued: Jan 1985
- Authors: Cape Town Municipal Workers Association
- Date: Jan 1985
- Subjects: Cape Town Municipal Workers Association
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/135520 , vital:37273
- Description: Members have shown tremendous interest in the Industrial Court Hearing relating to the Wage Dispute with the City Council. In addition to personal enquiries, we have received hundreds of telephone calls asking for progress reports. The calls are still coming in. It is in response to this clamour for information, as well as the Union’s commitment to keep members informed, that it was decided to bring out this SPECIAL ISSUE of WORKER NEWS. We hope that members will now be better informed on the latest developments.
- Full Text:
- Date Issued: Jan 1985
Women’s rights get a dressing down: mini skirt attacks in South Africa
- Authors: Vincent, Louise
- Date: 2008
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/141888 , vital:38013 , DOI: 10.18848/1447-9508/cgp/v06i06/42462
- Description: On Sunday the 17th of February 2008 25-year old Nwabisa Ngcukana was stripped, paraded naked while more than 100 onlookers jeered and laughed, doused in alcohol and sexually assaulted by taxi drivers and hawkers at the Noord Street taxi rank in Johannesburg1 (The Star 2008: 2). She was the fourth woman to be assaulted in this way at the rank on that evening. Three other women were stripped and sexually assaulted at the same taxi rank on the previous day. In each of these cases the fact that the women were wearing mini skirts was cited as the reason for the attack.
- Full Text:
- Date Issued: 2008
- Authors: Vincent, Louise
- Date: 2008
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/141888 , vital:38013 , DOI: 10.18848/1447-9508/cgp/v06i06/42462
- Description: On Sunday the 17th of February 2008 25-year old Nwabisa Ngcukana was stripped, paraded naked while more than 100 onlookers jeered and laughed, doused in alcohol and sexually assaulted by taxi drivers and hawkers at the Noord Street taxi rank in Johannesburg1 (The Star 2008: 2). She was the fourth woman to be assaulted in this way at the rank on that evening. Three other women were stripped and sexually assaulted at the same taxi rank on the previous day. In each of these cases the fact that the women were wearing mini skirts was cited as the reason for the attack.
- Full Text:
- Date Issued: 2008
What to expect when you’re not expecting : child-freedom, social stigma, and online subjectivities
- Authors: Morison, Tracy
- Date: 2013
- Language: English
- Type: Conference paper , text
- Identifier: vital:6210 , http://hdl.handle.net/10962/d1003915
- Description: From Introduction: Today I’m presenting some of the preliminary findings of a study about voluntary childlessness conducted with Indian, Polish, and fellow South African collaborators. Voluntary childlessness is also frequently referred to as being childless by choice or childfree. The term childfree (as opposed to ‘childless’) is intended to show that not having children “can be an active and fulfilling choice”, and to indicate agency and freedom from social obligation. The distinguishing feature of voluntary childlessness is the deliberate avoidance of parenthood, and this is precisely what opens up childfree people, especially married heterosexuals, to greater stigma than the temporarily or involuntarily childless, since it is seen as willing and deliberate deviation from the norm. Having children is seen as a natural consequence of being a “normal” heterosexual woman or man, as well as an expected outcome of marriage. Parenthood is therefore normalised by regulative discourses around sexuality and gender. This process of normalisation is reinforced by pronatalist discourse. According to Meyers, pronatalism rests upon twin strategies: The first is the valorisation or glorification of parenthood, which supports the belief that having children is the only true path to fulfilment. The second strategy is the denigration of non-reproduction in which childlessness is cast as horrific. The result of these dual strategies is to eliminate deliberate childlessness as a possibility. Parenthood, as the only truly viable option for a fulfilling life, is therefore a non-choice. This is compounded by nationalistic and religious rhetoric that constructs childbearing as an obligation or duty. Consequently, as my previous research showed, people often do not reflect on whether to have children or not, but see it more as a matter of timing.
- Full Text:
- Date Issued: 2013
- Authors: Morison, Tracy
- Date: 2013
- Language: English
- Type: Conference paper , text
- Identifier: vital:6210 , http://hdl.handle.net/10962/d1003915
- Description: From Introduction: Today I’m presenting some of the preliminary findings of a study about voluntary childlessness conducted with Indian, Polish, and fellow South African collaborators. Voluntary childlessness is also frequently referred to as being childless by choice or childfree. The term childfree (as opposed to ‘childless’) is intended to show that not having children “can be an active and fulfilling choice”, and to indicate agency and freedom from social obligation. The distinguishing feature of voluntary childlessness is the deliberate avoidance of parenthood, and this is precisely what opens up childfree people, especially married heterosexuals, to greater stigma than the temporarily or involuntarily childless, since it is seen as willing and deliberate deviation from the norm. Having children is seen as a natural consequence of being a “normal” heterosexual woman or man, as well as an expected outcome of marriage. Parenthood is therefore normalised by regulative discourses around sexuality and gender. This process of normalisation is reinforced by pronatalist discourse. According to Meyers, pronatalism rests upon twin strategies: The first is the valorisation or glorification of parenthood, which supports the belief that having children is the only true path to fulfilment. The second strategy is the denigration of non-reproduction in which childlessness is cast as horrific. The result of these dual strategies is to eliminate deliberate childlessness as a possibility. Parenthood, as the only truly viable option for a fulfilling life, is therefore a non-choice. This is compounded by nationalistic and religious rhetoric that constructs childbearing as an obligation or duty. Consequently, as my previous research showed, people often do not reflect on whether to have children or not, but see it more as a matter of timing.
- Full Text:
- Date Issued: 2013
What is the StreetNet Association?
- Authors: StreetNet Association
- Date: 2000
- Subjects: StreetNet Association
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/162148 , vital:40765
- Description: StreetNet was conceived by a network of individual vendors, activists, researchers and other people and institutions, who came together to look at how to increase the visibility, voice and bargaining power of street vendors throughout the world. StreetNet aims to promote the exchange of information and ideas on critical issues facing street vendors and on practical organizing and advocacy strategies. Through StreetNet, members should gain an understanding of the common problems of street vendors, develop new ideas for strengthening their organizing and advocacy efforts and join in international campaigns to promote policies and actions that can contribute to improving the lives of millions of street vendors.
- Full Text:
- Date Issued: 2000
- Authors: StreetNet Association
- Date: 2000
- Subjects: StreetNet Association
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/162148 , vital:40765
- Description: StreetNet was conceived by a network of individual vendors, activists, researchers and other people and institutions, who came together to look at how to increase the visibility, voice and bargaining power of street vendors throughout the world. StreetNet aims to promote the exchange of information and ideas on critical issues facing street vendors and on practical organizing and advocacy strategies. Through StreetNet, members should gain an understanding of the common problems of street vendors, develop new ideas for strengthening their organizing and advocacy efforts and join in international campaigns to promote policies and actions that can contribute to improving the lives of millions of street vendors.
- Full Text:
- Date Issued: 2000
Water resources in Botswana with particular reference to the savanna regions
- du Plessis, A J E, Rowntree, Kate M
- Authors: du Plessis, A J E , Rowntree, Kate M
- Date: 2003
- Language: English
- Type: Article
- Identifier: vital:6676 , http://hdl.handle.net/10962/d1006654
- Description: Production and development in the savanna regions of southern Africa are primarily determined by interactions between the limitations imposed by ecological determinants (such as rainfall and soil quality) and the management strategies of the specific region. Good planning, focussing on both the short and long-term effects of water use, is needed in water management strategies. Botswana is already experiencing so-called 'water stress' which is related to a number of factors such as rapidly increasing population leading to a sharp increase in water demand, low and variable rainfall, high rates of evaporation, and the high cost of exploiting existing water resources. At the current rates of abstraction, the lifetime of surface and groundwater resources is limited to decades. Botswana shares four river basins with its neighbouring countries. This results in a situation where 94% of the fresh water resources which Botswana can theoretically access originates outside its borders, making water resource management highly complex. Transnational sharing and management of water resources, therefore, plays a major role in securing sustainability of this precious resource.
- Full Text:
- Date Issued: 2003
- Authors: du Plessis, A J E , Rowntree, Kate M
- Date: 2003
- Language: English
- Type: Article
- Identifier: vital:6676 , http://hdl.handle.net/10962/d1006654
- Description: Production and development in the savanna regions of southern Africa are primarily determined by interactions between the limitations imposed by ecological determinants (such as rainfall and soil quality) and the management strategies of the specific region. Good planning, focussing on both the short and long-term effects of water use, is needed in water management strategies. Botswana is already experiencing so-called 'water stress' which is related to a number of factors such as rapidly increasing population leading to a sharp increase in water demand, low and variable rainfall, high rates of evaporation, and the high cost of exploiting existing water resources. At the current rates of abstraction, the lifetime of surface and groundwater resources is limited to decades. Botswana shares four river basins with its neighbouring countries. This results in a situation where 94% of the fresh water resources which Botswana can theoretically access originates outside its borders, making water resource management highly complex. Transnational sharing and management of water resources, therefore, plays a major role in securing sustainability of this precious resource.
- Full Text:
- Date Issued: 2003
Walking The Other Side: Doung Anwar Jahangeer
- Authors: Simbao, Ruth K
- Date: 2013
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/147681 , vital:38660 , https://0-doi.org.wam.seals.ac.za/10.1080/09528822.2013.796204
- Description: While certain forms of mobility are romanticized in the privileged worlds of art and academia, the need to move is often triggered by vulnerability, and literal pathways on the ground reveal much about human engagement with place. This article considers the work of Mauritian-born architect/artist/performer Doung Anwar Jahangeer who is based in Durban, South Africa. Inspired by Michel de Certeau, Jahangeer argues that pathways reveal the characteristics of society and uses the act of walking to question the degree to which meaningful transformation has taken place in South Africa. His City Walk performances disclose to audiences how grounded ways of engaging with movement can challenge the metaphoric blindness that handicaps privileged movement. Focusing on his performances from the 2012 ‘Making Way’ exhibition the author interprets Jahangeer's work as challenging blind spots with regard to space, particularly partial spaces still marred by Apartheid. Through performative walking he encourages his audiences to read between the lines of road markings, cracks and signs, and to experience the power of corporeally engaging with the road by thoughtfully placing one foot in front of the other as a mode of seeing.
- Full Text:
- Date Issued: 2013
- Authors: Simbao, Ruth K
- Date: 2013
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/147681 , vital:38660 , https://0-doi.org.wam.seals.ac.za/10.1080/09528822.2013.796204
- Description: While certain forms of mobility are romanticized in the privileged worlds of art and academia, the need to move is often triggered by vulnerability, and literal pathways on the ground reveal much about human engagement with place. This article considers the work of Mauritian-born architect/artist/performer Doung Anwar Jahangeer who is based in Durban, South Africa. Inspired by Michel de Certeau, Jahangeer argues that pathways reveal the characteristics of society and uses the act of walking to question the degree to which meaningful transformation has taken place in South Africa. His City Walk performances disclose to audiences how grounded ways of engaging with movement can challenge the metaphoric blindness that handicaps privileged movement. Focusing on his performances from the 2012 ‘Making Way’ exhibition the author interprets Jahangeer's work as challenging blind spots with regard to space, particularly partial spaces still marred by Apartheid. Through performative walking he encourages his audiences to read between the lines of road markings, cracks and signs, and to experience the power of corporeally engaging with the road by thoughtfully placing one foot in front of the other as a mode of seeing.
- Full Text:
- Date Issued: 2013
Viewpoint: reading conference recommendations in a wider context of social change
- Authors: Lotz-Sisitka, Heila
- Date: 2008
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/67411 , vital:29085 , https://www.ajol.info/index.php/sajee/article/view/122783
- Description: publisher version , This short Viewpoint paper considers the role and value of conference recommendations in shaping the field of environmental education. It explores the social politics, and often contested nature, of conference recommendations and their institutional histories, arguing that the act of producing conference recommendations forms part of the practices of new social movements. The paper recommends historicising conference recommendations and OEcross readings‚ to consider changing discourses and new developments in the field. Accompanying the short Viewpoint paper, are two sets of recently produced conference recommendations, one from the 4th International Environmental Education Conference held in Ahmedabad, India, and the other from the 1st International Conference on Mainstreaming Environment and Sustainability in African Universities held in Nairobi, Kenya.
- Full Text:
- Date Issued: 2008
- Authors: Lotz-Sisitka, Heila
- Date: 2008
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/67411 , vital:29085 , https://www.ajol.info/index.php/sajee/article/view/122783
- Description: publisher version , This short Viewpoint paper considers the role and value of conference recommendations in shaping the field of environmental education. It explores the social politics, and often contested nature, of conference recommendations and their institutional histories, arguing that the act of producing conference recommendations forms part of the practices of new social movements. The paper recommends historicising conference recommendations and OEcross readings‚ to consider changing discourses and new developments in the field. Accompanying the short Viewpoint paper, are two sets of recently produced conference recommendations, one from the 4th International Environmental Education Conference held in Ahmedabad, India, and the other from the 1st International Conference on Mainstreaming Environment and Sustainability in African Universities held in Nairobi, Kenya.
- Full Text:
- Date Issued: 2008
Victimisation in the lives of lesbian-identified women in South Africa : implications for clinical assessment and treatment
- Padmanabhanunni, A, Edwards, David J A
- Authors: Padmanabhanunni, A , Edwards, David J A
- Date: 2013
- Language: English
- Type: Article
- Identifier: vital:6237 , http://hdl.handle.net/10962/d1007787
- Description: Few clinical studies have examined victimisation in the lives of lesbian women in South Africa and whether there are distinct implications for psychological treatment. This paper presents the assessment and treatment of a lesbian-identified South African survivor of childhood sexual abuse who, as an adult, was raped and later gang raped. Her victimisation in adulthood represented ‘corrective rape’ motivated by the prejudiced assumption that the sexuality of lesbian women is pathological and should be ‘corrected’ through rape. This paper lends insights into the role of heterosexism in shaping vulnerability to victimisation and the process of recovery. It provides recommendations for work with sexual minority clients and highlights the implications when there is an absence of safety and support in the external environment.
- Full Text:
- Date Issued: 2013
- Authors: Padmanabhanunni, A , Edwards, David J A
- Date: 2013
- Language: English
- Type: Article
- Identifier: vital:6237 , http://hdl.handle.net/10962/d1007787
- Description: Few clinical studies have examined victimisation in the lives of lesbian women in South Africa and whether there are distinct implications for psychological treatment. This paper presents the assessment and treatment of a lesbian-identified South African survivor of childhood sexual abuse who, as an adult, was raped and later gang raped. Her victimisation in adulthood represented ‘corrective rape’ motivated by the prejudiced assumption that the sexuality of lesbian women is pathological and should be ‘corrected’ through rape. This paper lends insights into the role of heterosexism in shaping vulnerability to victimisation and the process of recovery. It provides recommendations for work with sexual minority clients and highlights the implications when there is an absence of safety and support in the external environment.
- Full Text:
- Date Issued: 2013
Using multivariate analysis and stable isotopes to assess the effects of substrate type on phytobenthos communities
- Dalu, Tatenda, Richoux, Nicole B, Froneman, P William
- Authors: Dalu, Tatenda , Richoux, Nicole B , Froneman, P William
- Date: 2014
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/68123 , vital:29201 , https://doi.org/10.5268/IW-4.4.719
- Description: Publisher version , For more than a century, artificial substrates have been employed in phytobenthos studies. In the present study, we compared the phytobenthos community structure in a field experiment over 3 seasons (summer, autumn, and winter) on 3 types of artificial substrates (brick, brown clay tiles, and grey clay tiles) and 3 natural substrates (macrophytes, rocks, and sediment) in a small, temperate system. A combination of multivariate analyses (cluster, multi-response permutation procedure, indicator species [IndVal], and canonical correspondence analysis [CCA]) and stable isotope analysis was used. We identified 96 total phytobenthos taxa. Artificial substrates resulted in different substrate communities, as shown by stable isotope analysis, cluster analysis, and a multi-response permutation procedure, with only those communities growing on grey tiles being similar to natural substrate communities. Overall, artificial substrates exhibited slightly higher species richness compared to natural substrates over the 3 seasons, although there were no significant differences (p> 0.05). Phytobenthos grown on brown tiles, rocks, and bricks showed seasonal variability of the carbon isotope δ13C values using one-way ANOVA (p< 0.05). Phytobenthos community structure did not show great seasonal variation; however, CCA identified water flow, conductivity, ammonium, phosphate, and water depth as important in structuring phytobenthos communities on different substrates. IndVal analysis showed that common phytobenthos taxa were not restricted to a single substrate, but preference was generally high for natural substrate, especially rocks, compared to artificial substrates. Substrate microhabitat type seems to influence the communities within the study areas.
- Full Text: false
- Date Issued: 2014
- Authors: Dalu, Tatenda , Richoux, Nicole B , Froneman, P William
- Date: 2014
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/68123 , vital:29201 , https://doi.org/10.5268/IW-4.4.719
- Description: Publisher version , For more than a century, artificial substrates have been employed in phytobenthos studies. In the present study, we compared the phytobenthos community structure in a field experiment over 3 seasons (summer, autumn, and winter) on 3 types of artificial substrates (brick, brown clay tiles, and grey clay tiles) and 3 natural substrates (macrophytes, rocks, and sediment) in a small, temperate system. A combination of multivariate analyses (cluster, multi-response permutation procedure, indicator species [IndVal], and canonical correspondence analysis [CCA]) and stable isotope analysis was used. We identified 96 total phytobenthos taxa. Artificial substrates resulted in different substrate communities, as shown by stable isotope analysis, cluster analysis, and a multi-response permutation procedure, with only those communities growing on grey tiles being similar to natural substrate communities. Overall, artificial substrates exhibited slightly higher species richness compared to natural substrates over the 3 seasons, although there were no significant differences (p> 0.05). Phytobenthos grown on brown tiles, rocks, and bricks showed seasonal variability of the carbon isotope δ13C values using one-way ANOVA (p< 0.05). Phytobenthos community structure did not show great seasonal variation; however, CCA identified water flow, conductivity, ammonium, phosphate, and water depth as important in structuring phytobenthos communities on different substrates. IndVal analysis showed that common phytobenthos taxa were not restricted to a single substrate, but preference was generally high for natural substrate, especially rocks, compared to artificial substrates. Substrate microhabitat type seems to influence the communities within the study areas.
- Full Text: false
- Date Issued: 2014
Tufa stromatolite ecosystems on the South African south coast
- Perissonotto, Renzo, Bornman, Tommy G, Steyn, Paul-Pierre, Miranda, Nelson A F, Dorrington, Rosemary A, Matcher, Gwynneth F, Strydom, Nadine A, Peer, Nasreen
- Authors: Perissonotto, Renzo , Bornman, Tommy G , Steyn, Paul-Pierre , Miranda, Nelson A F , Dorrington, Rosemary A , Matcher, Gwynneth F , Strydom, Nadine A , Peer, Nasreen
- Date: 2014
- Language: English
- Type: Article
- Identifier: vital:6490 , http://hdl.handle.net/10962/d1014585 , http://dx.doi.org/10.1590/sajs.2014/20140011
- Description: Following the first description of living marine stromatolites along the South African east coast, new investigations along the south coast have revealed the occurrence of extensive fields of actively calcifying stromatolites. These stromatolites have been recorded at regular distances along a 200-km stretch of coastline, from Cape Recife in the east to the Storms River mouth in the west, with the highest density found between Schoenmakerskop and the Maitland River mouth. All active stromatolites are associated with freshwater seepage streams flowing from the dune cordon, which form rimstone dams and other accretions capable of retaining water in the supratidal platform. Resulting pools can reach a maximum depth of about 1 m and constitute a unique ecosystem in which freshwater and marine organisms alternate their dominance in response to vertical mixing and the balance between freshwater versus marine inflow. Although the factors controlling stromatolite growth are yet to be determined, nitrogen appears to be supplied mainly via the dune seeps. The epibenthic algal community within stromatolite pools is generally co-dominated by cyanobacteria and chlorophytes, with minimal diatom contribution.
- Full Text:
- Date Issued: 2014
- Authors: Perissonotto, Renzo , Bornman, Tommy G , Steyn, Paul-Pierre , Miranda, Nelson A F , Dorrington, Rosemary A , Matcher, Gwynneth F , Strydom, Nadine A , Peer, Nasreen
- Date: 2014
- Language: English
- Type: Article
- Identifier: vital:6490 , http://hdl.handle.net/10962/d1014585 , http://dx.doi.org/10.1590/sajs.2014/20140011
- Description: Following the first description of living marine stromatolites along the South African east coast, new investigations along the south coast have revealed the occurrence of extensive fields of actively calcifying stromatolites. These stromatolites have been recorded at regular distances along a 200-km stretch of coastline, from Cape Recife in the east to the Storms River mouth in the west, with the highest density found between Schoenmakerskop and the Maitland River mouth. All active stromatolites are associated with freshwater seepage streams flowing from the dune cordon, which form rimstone dams and other accretions capable of retaining water in the supratidal platform. Resulting pools can reach a maximum depth of about 1 m and constitute a unique ecosystem in which freshwater and marine organisms alternate their dominance in response to vertical mixing and the balance between freshwater versus marine inflow. Although the factors controlling stromatolite growth are yet to be determined, nitrogen appears to be supplied mainly via the dune seeps. The epibenthic algal community within stromatolite pools is generally co-dominated by cyanobacteria and chlorophytes, with minimal diatom contribution.
- Full Text:
- Date Issued: 2014
Treatment of wine distillery wastewater by high rate anaerobic digestion
- Melamane, Xolisa L, Tandlich, Roman, Burgess, Jo E
- Authors: Melamane, Xolisa L , Tandlich, Roman , Burgess, Jo E
- Date: 2007
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/75896 , vital:30480 , https://doi.org/10.2166/wst.2007.466
- Description: Wine distillery wastewaters (WDW) are acidic and have a high content of potential organic pollutants. This causes high chemical oxygen demand (COD) values. Polyphenols constitute a significant portion of this COD, and limit the efficiency of biological treatment of WDWs. WDW starting parameters were as follows: pH 3.83, 4,185 mg/l soluble COD (CODs) and 674.6 mg/l of phenols. During operation, amendments of CaCO3 and K2HPO4, individually or in combination, were required for buffering the digester.
- Full Text: false
- Date Issued: 2007
- Authors: Melamane, Xolisa L , Tandlich, Roman , Burgess, Jo E
- Date: 2007
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/75896 , vital:30480 , https://doi.org/10.2166/wst.2007.466
- Description: Wine distillery wastewaters (WDW) are acidic and have a high content of potential organic pollutants. This causes high chemical oxygen demand (COD) values. Polyphenols constitute a significant portion of this COD, and limit the efficiency of biological treatment of WDWs. WDW starting parameters were as follows: pH 3.83, 4,185 mg/l soluble COD (CODs) and 674.6 mg/l of phenols. During operation, amendments of CaCO3 and K2HPO4, individually or in combination, were required for buffering the digester.
- Full Text: false
- Date Issued: 2007
Three new pentacyclic triterpenoids from twigs of Manniophyton fulvum (Euphorbiaceae)
- Mbeunkeu, Ahri B D, Noundou, Xavier S, Krause, Rui W M, Teinkela, Jean E M, Laatsch, Hartmut, Azebaze, Anatole G B, Vardamides, Juliette C, Tala, Michel F
- Authors: Mbeunkeu, Ahri B D , Noundou, Xavier S , Krause, Rui W M , Teinkela, Jean E M , Laatsch, Hartmut , Azebaze, Anatole G B , Vardamides, Juliette C , Tala, Michel F
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/126782 , vital:35922 , https://doi.org/10.1016/j.phytol.2018.06.019
- Description: Phytochemical investigation of the methanol extracts of the twigs of Manniophyton fulvum has led to the isolation and characterization of three new pentacyclic triterpenoids, designated as 3α,28-dihydroxyfriedelan-1-one (1), manniotaraxerol A (3) and manniotaraxerol B (4), along with fourteen known compounds, 3α-hydroxy-1-oxofriedelane (2), betulinic acid (5), friedelin (S1), taraxerol (S2), a mixture of stigmasterol (S3) and β-sitosterol (S4), herranone (S5), docosanoic acid (S6), ursolic acid (S7), nasutin B (S8), bergenin (S9), stigmasterol-3-O-β-Dglucopyranoside (S10), 1,2-di-O-palmitoyl-3-O-(6-sulfo-α-D-quinovopyranosyl)glycerol (S11), and aridanin (S12). The structures of all compounds were determined by comprehensive spectroscopic analyses (1D and 2D NMR, EI and ESI-MS). 3α,28-Dihydroxyfriedelan-1-one (1), 3α-hydroxy-1-oxofriedelane (2), manniotaraxerol A (3), manniotaraxerol B (4), and betulinic acid (5) were evaluated against HeLa (human cervix adenocarcinoma) cancer cells. Manniotaraxerol A (3) showed weak in vitro cytotoxicity with a cell viability value of 49.3%. Betulinic acid (5) also showed significant cytotoxicity against HeLa cell with a cell viability value of 4.0%; the other compounds were inactive in this test.
- Full Text:
- Date Issued: 2018
- Authors: Mbeunkeu, Ahri B D , Noundou, Xavier S , Krause, Rui W M , Teinkela, Jean E M , Laatsch, Hartmut , Azebaze, Anatole G B , Vardamides, Juliette C , Tala, Michel F
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/126782 , vital:35922 , https://doi.org/10.1016/j.phytol.2018.06.019
- Description: Phytochemical investigation of the methanol extracts of the twigs of Manniophyton fulvum has led to the isolation and characterization of three new pentacyclic triterpenoids, designated as 3α,28-dihydroxyfriedelan-1-one (1), manniotaraxerol A (3) and manniotaraxerol B (4), along with fourteen known compounds, 3α-hydroxy-1-oxofriedelane (2), betulinic acid (5), friedelin (S1), taraxerol (S2), a mixture of stigmasterol (S3) and β-sitosterol (S4), herranone (S5), docosanoic acid (S6), ursolic acid (S7), nasutin B (S8), bergenin (S9), stigmasterol-3-O-β-Dglucopyranoside (S10), 1,2-di-O-palmitoyl-3-O-(6-sulfo-α-D-quinovopyranosyl)glycerol (S11), and aridanin (S12). The structures of all compounds were determined by comprehensive spectroscopic analyses (1D and 2D NMR, EI and ESI-MS). 3α,28-Dihydroxyfriedelan-1-one (1), 3α-hydroxy-1-oxofriedelane (2), manniotaraxerol A (3), manniotaraxerol B (4), and betulinic acid (5) were evaluated against HeLa (human cervix adenocarcinoma) cancer cells. Manniotaraxerol A (3) showed weak in vitro cytotoxicity with a cell viability value of 49.3%. Betulinic acid (5) also showed significant cytotoxicity against HeLa cell with a cell viability value of 4.0%; the other compounds were inactive in this test.
- Full Text:
- Date Issued: 2018
Three days to remember in Latin America
- Authors: StreetNet Association
- Date: 2001
- Subjects: StreetNet Association
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/162159 , vital:40767
- Description: What do a street vendor of traditional sweets in Venezuela, an indigenous vendor of flowers in Bolivia and an immigrant vendor of “empanadas” in Costa Rica have in common? A lot despite their different realities! For example, livelihoods that rely on production and sale on the streets or at markets that cost them years of struggle; goods frequently made with their own hands, battles against unsympathetic municipalities; harassment -sometimes violent - from the local police; the desire to organise themselves, which must overcome daily problems of leadership, politics and internal conflicts, and lack of resources to improve their situation or to help solve problems of their fellow vendors.
- Full Text:
- Date Issued: 2001
- Authors: StreetNet Association
- Date: 2001
- Subjects: StreetNet Association
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/162159 , vital:40767
- Description: What do a street vendor of traditional sweets in Venezuela, an indigenous vendor of flowers in Bolivia and an immigrant vendor of “empanadas” in Costa Rica have in common? A lot despite their different realities! For example, livelihoods that rely on production and sale on the streets or at markets that cost them years of struggle; goods frequently made with their own hands, battles against unsympathetic municipalities; harassment -sometimes violent - from the local police; the desire to organise themselves, which must overcome daily problems of leadership, politics and internal conflicts, and lack of resources to improve their situation or to help solve problems of their fellow vendors.
- Full Text:
- Date Issued: 2001
Those merry, tinkling, tuneful bells : handbells in Victorian Grahamstown with a note on bell ringing at Grahamstown Cathedral
- Authors: Berning, J M
- Date: 2003
- Language: English
- Type: Article
- Identifier: vital:6993 , http://hdl.handle.net/10962/d1012420
- Description: [From the introduction]: The idea of using sets of small bells tuned to particular notes in order to produce music is very old. There are illustrations of slung bells being played in this way from the 11th and 12th centuries. Bell ringers in England date the sue of sets of tuned and hand-held bells from as early as the 16th century though it seems that the modern handbell may have come into existence in the early 18th century. Such bells were used by tower bell ringers as convenient practice devices for change ringing. The ringing of tunes on handbells became popular in the 18th century and reached its heyday in the latter half of the 19th century. In England tune ringing was especially popular in the north and major competitions had their centre at Manchester. Special trains were run to competitions there and bands, ringing up to 200 bells, could find their skills tested on extracts from Mozart's Don Giovanni. World War I and the spread of alternative media of entertainment like radio put an end to ringing on this scale. , This publication marked the 150th Anniversary of the Diocese of Grahamstown. Michael Berning was a member of the Rhodes University Library staff from 1965 until his retirement in 1997. He was Tower Captain of the Grahamstown Cathedral during the 1980s.
- Full Text:
- Date Issued: 2003
- Authors: Berning, J M
- Date: 2003
- Language: English
- Type: Article
- Identifier: vital:6993 , http://hdl.handle.net/10962/d1012420
- Description: [From the introduction]: The idea of using sets of small bells tuned to particular notes in order to produce music is very old. There are illustrations of slung bells being played in this way from the 11th and 12th centuries. Bell ringers in England date the sue of sets of tuned and hand-held bells from as early as the 16th century though it seems that the modern handbell may have come into existence in the early 18th century. Such bells were used by tower bell ringers as convenient practice devices for change ringing. The ringing of tunes on handbells became popular in the 18th century and reached its heyday in the latter half of the 19th century. In England tune ringing was especially popular in the north and major competitions had their centre at Manchester. Special trains were run to competitions there and bands, ringing up to 200 bells, could find their skills tested on extracts from Mozart's Don Giovanni. World War I and the spread of alternative media of entertainment like radio put an end to ringing on this scale. , This publication marked the 150th Anniversary of the Diocese of Grahamstown. Michael Berning was a member of the Rhodes University Library staff from 1965 until his retirement in 1997. He was Tower Captain of the Grahamstown Cathedral during the 1980s.
- Full Text:
- Date Issued: 2003
Thermoluminescence of kunzite: a study of kinetic processes and dosimetry characteristics
- Ogundare, F O, Alatishe, M A, Chithambo, Makaiko L, Costin, G
- Authors: Ogundare, F O , Alatishe, M A , Chithambo, Makaiko L , Costin, G
- Date: 2016
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/124701 , vital:35650 , https://doi.org/10.1016/j.nimb.2016.02.059
- Description: Since the use of natural minerals for dating and dose reconstruction using luminescence techniques is well-established and always of interest, we present thermoluminescence characteristics of kunzite, a gem variety of spodumene. The chemical composition of the sample was determined using an Electron Probe MicroAnalyzer.
- Full Text: false
- Date Issued: 2016
- Authors: Ogundare, F O , Alatishe, M A , Chithambo, Makaiko L , Costin, G
- Date: 2016
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/124701 , vital:35650 , https://doi.org/10.1016/j.nimb.2016.02.059
- Description: Since the use of natural minerals for dating and dose reconstruction using luminescence techniques is well-established and always of interest, we present thermoluminescence characteristics of kunzite, a gem variety of spodumene. The chemical composition of the sample was determined using an Electron Probe MicroAnalyzer.
- Full Text: false
- Date Issued: 2016
Thermoluminescence of K-Mg-Al-Zn fluorophosphate glass
- Thomas, Sunil, Chithambo, Makaiko L
- Authors: Thomas, Sunil , Chithambo, Makaiko L
- Date: 2017
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/124188 , vital:35574 , https://doi.org/10.1016/j.optmat.2016.12.035
- Description: The thermoluminescence of beta irradiated K-Mg-Al-Zn fluorophosphate glass is reported. A glow-curve corresponding to 10 Gy measured at 1 °C/s shows two peaks, a weaker-intensity one at 70 °C and a more prominent one at 235 °C, the subject of this report. The main peak was observed to fade with delay between irradiation and measurement and specifically, by 11% in 15 h. Its dose response is superlinear in the dose range 1–190 Gy although the change was linear for the initial 10 Gy. Regarding kinetic analysis, the activation energy of the higher temperature peak was evaluated as 1.31 eV and that of the lower temperature peak was found as 0.47 eV. It was also noted that the main peak is affected by thermal quenching with an activation energy for thermal quenching equal to 1.37 eV. It is proposed that the mechanism associated with the thermoluminescence in K-Mg-Al-Zn fluorophosphate glass is that electrons trapped by the metal cations are released during heating and then recombine with holes at oxygen sites.
- Full Text: false
- Date Issued: 2017
- Authors: Thomas, Sunil , Chithambo, Makaiko L
- Date: 2017
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/124188 , vital:35574 , https://doi.org/10.1016/j.optmat.2016.12.035
- Description: The thermoluminescence of beta irradiated K-Mg-Al-Zn fluorophosphate glass is reported. A glow-curve corresponding to 10 Gy measured at 1 °C/s shows two peaks, a weaker-intensity one at 70 °C and a more prominent one at 235 °C, the subject of this report. The main peak was observed to fade with delay between irradiation and measurement and specifically, by 11% in 15 h. Its dose response is superlinear in the dose range 1–190 Gy although the change was linear for the initial 10 Gy. Regarding kinetic analysis, the activation energy of the higher temperature peak was evaluated as 1.31 eV and that of the lower temperature peak was found as 0.47 eV. It was also noted that the main peak is affected by thermal quenching with an activation energy for thermal quenching equal to 1.37 eV. It is proposed that the mechanism associated with the thermoluminescence in K-Mg-Al-Zn fluorophosphate glass is that electrons trapped by the metal cations are released during heating and then recombine with holes at oxygen sites.
- Full Text: false
- Date Issued: 2017
Thermal responses in some Eastern Cape African Cicadas (Hemiptera: Cicadidae)
- Sanborn, Allen F, Phillips, P K, Villet, Martin H
- Authors: Sanborn, Allen F , Phillips, P K , Villet, Martin H
- Date: 2003
- Language: English
- Type: text , Article
- Identifier: vital:6918 , http://hdl.handle.net/10962/d1011881
- Description: Thermal responses were measured in cicadas collected in the Eastern Cape Province of South Africa. The thermal responses of 22 species from 5 biomes were determined. Shade-seeking temperature was the most variable and related to the various biomes. Mean shade-seeking temperature was greatest for species inhabiting the thicket biome and lowest for species inhabiting the forest biome. The animals that live in the thicket biome may adapt to the greater thermal stress to take advantage of a habitat that permits lower predation pressure. There is a correlation between body size and shade-seeking temperatures with smaller species exhibiting lower thermal responses within a particular habitat. This may be related to the greater heat exchange in smaller species. Heat torpor temperatures did not differ between the various biomes.
- Full Text:
- Date Issued: 2003
- Authors: Sanborn, Allen F , Phillips, P K , Villet, Martin H
- Date: 2003
- Language: English
- Type: text , Article
- Identifier: vital:6918 , http://hdl.handle.net/10962/d1011881
- Description: Thermal responses were measured in cicadas collected in the Eastern Cape Province of South Africa. The thermal responses of 22 species from 5 biomes were determined. Shade-seeking temperature was the most variable and related to the various biomes. Mean shade-seeking temperature was greatest for species inhabiting the thicket biome and lowest for species inhabiting the forest biome. The animals that live in the thicket biome may adapt to the greater thermal stress to take advantage of a habitat that permits lower predation pressure. There is a correlation between body size and shade-seeking temperatures with smaller species exhibiting lower thermal responses within a particular habitat. This may be related to the greater heat exchange in smaller species. Heat torpor temperatures did not differ between the various biomes.
- Full Text:
- Date Issued: 2003
The transportability and utility of cognitive therapy in South African contexts: a review
- Authors: Young, Charles
- Date: 2009
- Language: English
- Type: Article
- Identifier: vital:6279 , http://hdl.handle.net/10962/d1008280
- Description: Cognitive therapy could be more widely promoted in South Africa given the great disparity between the need and provision of psychological therapies. Three possible objections to the promotion of cognitive therapy are considered: uncertainty surrounding the effectiveness of cognitive therapy in South African contexts; uncertainty surrounding the applicability in multicultural contexts; and suggestions that cognitive therapy is decontextualised and therefore objectionable in a country facing major social challenges. A systematic review of the literature indentified 15 outcome studies, and suggests that cognitive therapy is a viable and much-needed approach in South Africa.
- Full Text:
- Date Issued: 2009
- Authors: Young, Charles
- Date: 2009
- Language: English
- Type: Article
- Identifier: vital:6279 , http://hdl.handle.net/10962/d1008280
- Description: Cognitive therapy could be more widely promoted in South Africa given the great disparity between the need and provision of psychological therapies. Three possible objections to the promotion of cognitive therapy are considered: uncertainty surrounding the effectiveness of cognitive therapy in South African contexts; uncertainty surrounding the applicability in multicultural contexts; and suggestions that cognitive therapy is decontextualised and therefore objectionable in a country facing major social challenges. A systematic review of the literature indentified 15 outcome studies, and suggests that cognitive therapy is a viable and much-needed approach in South Africa.
- Full Text:
- Date Issued: 2009
The Thousand-Pulsar-Array programme on MeerKAT–I: science objectives and first results
- Johnston, Simon, Karastergiou, A, Keith, M J, Song, X, Weltevrede, P, Abbate, F, Bailes, M, Buchner, S, Camilo, F, Geyer, M, Hugo, B, Jameson, A, Kramer, M, Parthasarathy, A, Reardon, D J, Ridolfi A, Serylak, M, Shannon, R M, Spiewak, R, Van Straten, W, Venkatraman Krishnan, V, Jankowski, F, Meyers, B W, Oswald , L, Posselt, B, Sobey, C, Szary, A, Van Leeuwen, J
- Authors: Johnston, Simon , Karastergiou, A , Keith, M J , Song, X , Weltevrede, P , Abbate, F , Bailes, M , Buchner, S , Camilo, F , Geyer, M , Hugo, B , Jameson, A , Kramer, M , Parthasarathy, A , Reardon, D J , Ridolfi A , Serylak, M , Shannon, R M , Spiewak, R , Van Straten, W , Venkatraman Krishnan, V , Jankowski, F , Meyers, B W , Oswald , L , Posselt, B , Sobey, C , Szary, A , Van Leeuwen, J
- Date: 2020
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/148814 , vital:38776 , https://0-doi.org.wam.seals.ac.za/10.1093/mnras/staa516
- Description: We report here on initial results from the Thousand-Pulsar-Array (TPA) programme, part of the Large Survey Project ‘MeerTime’ on the MeerKAT telescope. The interferometer is used in the tied-array mode in the band from 856 to 1712 MHz, and the wide band coupled with the large collecting area and low receiver temperature make it an excellent telescope for the study of radio pulsars. The TPA is a 5 year project, which aims at to observing (a) more than 1000 pulsars to obtain high-fidelity pulse profiles, (b) some 500 of these pulsars over multiple epochs, and (c) long sequences of single-pulse trains from several hundred pulsars.
- Full Text:
- Date Issued: 2020
- Authors: Johnston, Simon , Karastergiou, A , Keith, M J , Song, X , Weltevrede, P , Abbate, F , Bailes, M , Buchner, S , Camilo, F , Geyer, M , Hugo, B , Jameson, A , Kramer, M , Parthasarathy, A , Reardon, D J , Ridolfi A , Serylak, M , Shannon, R M , Spiewak, R , Van Straten, W , Venkatraman Krishnan, V , Jankowski, F , Meyers, B W , Oswald , L , Posselt, B , Sobey, C , Szary, A , Van Leeuwen, J
- Date: 2020
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/148814 , vital:38776 , https://0-doi.org.wam.seals.ac.za/10.1093/mnras/staa516
- Description: We report here on initial results from the Thousand-Pulsar-Array (TPA) programme, part of the Large Survey Project ‘MeerTime’ on the MeerKAT telescope. The interferometer is used in the tied-array mode in the band from 856 to 1712 MHz, and the wide band coupled with the large collecting area and low receiver temperature make it an excellent telescope for the study of radio pulsars. The TPA is a 5 year project, which aims at to observing (a) more than 1000 pulsars to obtain high-fidelity pulse profiles, (b) some 500 of these pulsars over multiple epochs, and (c) long sequences of single-pulse trains from several hundred pulsars.
- Full Text:
- Date Issued: 2020