SACCAWU - NSSC Secretariat Report & Bargaining conference resolutions
- SACCAWU
- Authors: SACCAWU
- Date: Oct 2007
- Subjects: SACCAWU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/113902 , vital:33843
- Description: Comrades National Office Bearers of SACCAWU, leadership of the Company Council, distinguished guests & delegates to this Summit, we extend to you revolutionary greetings from the National Office Bearers of Shoprite Checkers, and the masses of Shoprite Checkers workers who are SACCAWU members. This gathering takes place exactly a year after our national strike. It also takes place after lot of significant gatherings of all the Alliance Partners i.e. COSATU Central Committee, SACP National Conference, ANC National Policy Conference, and on the home front, the SACCAWU National Bargaining Conference. It is the important that the deliberations in this gathering should look at all decisions taken during this significant event, the Bargaining Conference, and put them into practicality. This Secretariat Report will cover the activities since the National Shopstewards Council of June 2006 in Durban.
- Full Text:
- Date Issued: Oct 2007
- Authors: SACCAWU
- Date: Oct 2007
- Subjects: SACCAWU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/113902 , vital:33843
- Description: Comrades National Office Bearers of SACCAWU, leadership of the Company Council, distinguished guests & delegates to this Summit, we extend to you revolutionary greetings from the National Office Bearers of Shoprite Checkers, and the masses of Shoprite Checkers workers who are SACCAWU members. This gathering takes place exactly a year after our national strike. It also takes place after lot of significant gatherings of all the Alliance Partners i.e. COSATU Central Committee, SACP National Conference, ANC National Policy Conference, and on the home front, the SACCAWU National Bargaining Conference. It is the important that the deliberations in this gathering should look at all decisions taken during this significant event, the Bargaining Conference, and put them into practicality. This Secretariat Report will cover the activities since the National Shopstewards Council of June 2006 in Durban.
- Full Text:
- Date Issued: Oct 2007
The thirtieth anniversary of the Soweto uprisings: reading the shadow in Sam Nzima's iconic photograph of Hector Pieterson
- Authors: Simbao, Ruth K
- Date: 2007
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/147536 , vital:38647 , https://doi.org/10.1162/afar.2007.40.2.52
- Description: This haunting photograph (Fig. 1) from the 1976 Soweto Uprisings in South Africa is often referred to as the single most important photograph to emerge from the struggle against apartheid (Purtilo 1999:22). According to South African film director Feizel Mamdoo, there are particular moments in history that are defined by photographic, celluloid, or television images, such as the world famous photograph of the Saigon girl, naked and burning from napalm (Worsdale 1998; see also Richards 2001). He argues that the iconic photograph by Sam Nzima depicting Hector Pieterson being carried in the arms of Mbuyisa Makhubu, with his distraught sister Antionette1 running alongside, is comparable in the way that “it marks history, both social and personal” (Worsdale 1998).
- Full Text:
- Date Issued: 2007
- Authors: Simbao, Ruth K
- Date: 2007
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/147536 , vital:38647 , https://doi.org/10.1162/afar.2007.40.2.52
- Description: This haunting photograph (Fig. 1) from the 1976 Soweto Uprisings in South Africa is often referred to as the single most important photograph to emerge from the struggle against apartheid (Purtilo 1999:22). According to South African film director Feizel Mamdoo, there are particular moments in history that are defined by photographic, celluloid, or television images, such as the world famous photograph of the Saigon girl, naked and burning from napalm (Worsdale 1998; see also Richards 2001). He argues that the iconic photograph by Sam Nzima depicting Hector Pieterson being carried in the arms of Mbuyisa Makhubu, with his distraught sister Antionette1 running alongside, is comparable in the way that “it marks history, both social and personal” (Worsdale 1998).
- Full Text:
- Date Issued: 2007
Performance measurement, quality assurance and higher education
- Authors: Badat, Saleem
- Date: 2007-08-07
- Language: English
- Type: Text
- Identifier: vital:7658 , http://hdl.handle.net/10962/d1015790
- Full Text:
- Date Issued: 2007-08-07
- Authors: Badat, Saleem
- Date: 2007-08-07
- Language: English
- Type: Text
- Identifier: vital:7658 , http://hdl.handle.net/10962/d1015790
- Full Text:
- Date Issued: 2007-08-07
A synopsis of the Afrotropical Tricorythidae
- Authors: Barber-James, Helen M
- Date: 2008
- Language: English
- Type: Article
- Identifier: vital:7003 , http://hdl.handle.net/10962/d1008362
- Description: The Tricorythidae of the Afrotropical Region is currently composed of five described genera, three of which are thought to be restricted to Madagascar (Madecassorythus Elouard and Oliarioniny, Ranorythus Oliarinony and Elouard, and Spinirythus Oliarinony and Elouard), one which is restricted to Africa (Dicercomyzon Demoulin), and one which is thought to be distributed on both landmasses (Tricorythus Eaton). Based on sexual dimorphism, manifest in the relative eye size of mature male and female nymphs and adults and on the structure of the genitalia of adult males, it is proposed that there are two additional genera in Africa, as yet undescribed. One of these genera is represented by a species currently placed in Tricorythus (T. discolor [Burmeister]). Several other undescribed species within South Africa have been identified as belonging to the group. A second lineage is represented by Tricorythus tinctus Kimmins, from Uganda, the only currently described species. There are also several more undescribed species of this group widespread in Africa.
- Full Text:
- Date Issued: 2008
- Authors: Barber-James, Helen M
- Date: 2008
- Language: English
- Type: Article
- Identifier: vital:7003 , http://hdl.handle.net/10962/d1008362
- Description: The Tricorythidae of the Afrotropical Region is currently composed of five described genera, three of which are thought to be restricted to Madagascar (Madecassorythus Elouard and Oliarioniny, Ranorythus Oliarinony and Elouard, and Spinirythus Oliarinony and Elouard), one which is restricted to Africa (Dicercomyzon Demoulin), and one which is thought to be distributed on both landmasses (Tricorythus Eaton). Based on sexual dimorphism, manifest in the relative eye size of mature male and female nymphs and adults and on the structure of the genitalia of adult males, it is proposed that there are two additional genera in Africa, as yet undescribed. One of these genera is represented by a species currently placed in Tricorythus (T. discolor [Burmeister]). Several other undescribed species within South Africa have been identified as belonging to the group. A second lineage is represented by Tricorythus tinctus Kimmins, from Uganda, the only currently described species. There are also several more undescribed species of this group widespread in Africa.
- Full Text:
- Date Issued: 2008
Location and mapping of 2.4 GHz RF transmitters
- Wells, David D, Siebörger, Ingrid G, Irwin, Barry V W
- Authors: Wells, David D , Siebörger, Ingrid G , Irwin, Barry V W
- Date: 2008
- Language: English
- Type: Conference paper
- Identifier: vital:6604 , http://hdl.handle.net/10962/d1009324
- Description: This paper describes the use of a MetaGeek WiSpy dongle in conjunction with custom developed client-server software for the accurate identication of Wireless nodes within an organisation. The MetaGeek WiSpy dongle together with the custom developed software allow for the determination of the positions of Wi-Fi transceivers to within a few meters, which can be helpful in reducing the area for physical searches in the event of rogue units. This paper describes the tool and methodology for a site survey as a component that can be used in organisations wishing to audit their environments for wireless networks. The tool produced from this project, the WiSpy Signal Source Mapping Tool, is a three part application based on a client-server architecture. One part interfaces with a low cost 2.4 GHz spectrum analyser, another stores the data collected from all the spectrum analysers and the last part interprets the data to provide a graphical overview of the Wi-Fi network being analysed. The location of the spectrum analysers are entered as GPS points, and the tool can interface with a GPS device to automatically update its geographical location. The graphical representation of the 2.4 GHz spectrum populated with Wi-Fi devices (Wi-Fi network) provided a fairly accurate method in locating and tracking 2.4 GHz devices. Accuracy of the WiSpy Signal Source Mapping Tool is hindered by obstructions or interferences within the area or non line of sight.
- Full Text:
- Date Issued: 2008
- Authors: Wells, David D , Siebörger, Ingrid G , Irwin, Barry V W
- Date: 2008
- Language: English
- Type: Conference paper
- Identifier: vital:6604 , http://hdl.handle.net/10962/d1009324
- Description: This paper describes the use of a MetaGeek WiSpy dongle in conjunction with custom developed client-server software for the accurate identication of Wireless nodes within an organisation. The MetaGeek WiSpy dongle together with the custom developed software allow for the determination of the positions of Wi-Fi transceivers to within a few meters, which can be helpful in reducing the area for physical searches in the event of rogue units. This paper describes the tool and methodology for a site survey as a component that can be used in organisations wishing to audit their environments for wireless networks. The tool produced from this project, the WiSpy Signal Source Mapping Tool, is a three part application based on a client-server architecture. One part interfaces with a low cost 2.4 GHz spectrum analyser, another stores the data collected from all the spectrum analysers and the last part interprets the data to provide a graphical overview of the Wi-Fi network being analysed. The location of the spectrum analysers are entered as GPS points, and the tool can interface with a GPS device to automatically update its geographical location. The graphical representation of the 2.4 GHz spectrum populated with Wi-Fi devices (Wi-Fi network) provided a fairly accurate method in locating and tracking 2.4 GHz devices. Accuracy of the WiSpy Signal Source Mapping Tool is hindered by obstructions or interferences within the area or non line of sight.
- Full Text:
- Date Issued: 2008
A preliminary survey of the estuaries on the south coast of South Africa, Robberg Peninsula - Cape St Francis, with particular reference to the fish fauna : ecological overview article
- James, Nicola C, Harrison, T D
- Authors: James, Nicola C , Harrison, T D
- Date: 2009
- Language: English
- Type: text , Article
- Identifier: vital:7144 , http://hdl.handle.net/10962/d1011842
- Description: A basic ichthyofaunal and physico-chemical survey of the coastal outlets on the south coast of South Africa (Robberg Peninsula to Cape St Francis) was undertaken during November 1994 and September 1995. Some 27 systems were identified along this stretch of coast and of these, 48% (Brak, Helpmekaars, Klip, Witels, Geelhoutbos, Kleinbos, Bruglaagte, Langbos, Sanddrif, Eerste, Boskloof, Kaapsedrif and Klipdrif [Wes]) comprised the inlets of coastal streams that offer little habitat for fishes, 26% (Sout, Bloukrans, Lottering, Elandsbos, Storms, Elands and Groot [Oos]) are located within deeply incised valleys within the Tsitsikamma region and provide limited littoral habitat for estuary-associated fishes; 26% of the systems (Piesang, Keurbooms, Matjies, Groot [Wes], Tsitsikamma, Klipdrif [Oos], Slang) appear to serve some estuarine function for both marine migrant and resident species although some of these may also be limited due to their small size and infrequent connection with the sea. This study serves to emphasize the ecological importance of these latter estuaries within this coastal sector.
- Full Text:
- Date Issued: 2009
- Authors: James, Nicola C , Harrison, T D
- Date: 2009
- Language: English
- Type: text , Article
- Identifier: vital:7144 , http://hdl.handle.net/10962/d1011842
- Description: A basic ichthyofaunal and physico-chemical survey of the coastal outlets on the south coast of South Africa (Robberg Peninsula to Cape St Francis) was undertaken during November 1994 and September 1995. Some 27 systems were identified along this stretch of coast and of these, 48% (Brak, Helpmekaars, Klip, Witels, Geelhoutbos, Kleinbos, Bruglaagte, Langbos, Sanddrif, Eerste, Boskloof, Kaapsedrif and Klipdrif [Wes]) comprised the inlets of coastal streams that offer little habitat for fishes, 26% (Sout, Bloukrans, Lottering, Elandsbos, Storms, Elands and Groot [Oos]) are located within deeply incised valleys within the Tsitsikamma region and provide limited littoral habitat for estuary-associated fishes; 26% of the systems (Piesang, Keurbooms, Matjies, Groot [Wes], Tsitsikamma, Klipdrif [Oos], Slang) appear to serve some estuarine function for both marine migrant and resident species although some of these may also be limited due to their small size and infrequent connection with the sea. This study serves to emphasize the ecological importance of these latter estuaries within this coastal sector.
- Full Text:
- Date Issued: 2009
Analyzing, digitizing and technologizing the oral word: the case of Bongani Sitole
- Kaschula, Russell H, Mostert, André M
- Authors: Kaschula, Russell H , Mostert, André M
- Date: 2009
- Subjects: Sitole, Bongani, 1937- , Xhosa (African people) -- South Africa , Xhosa poetry , Folk poetry, Xhosa
- Language: English
- Type: article , text
- Identifier: http://hdl.handle.net/10962/59368 , vital:27566 , https://doi.org/10.1080/13696810903259384
- Description: This article analyzes the oral poetry, izibongo, produced by Xhosa oral poet Bongani Sitole (both in book and technological form). It will trace this poetry from the moment it was orally produced, through to the technologizing and publication of this poetry in book form and on a website. The initial part of this article looks at the life and work of the poet. A contextual analysis of selected poetry is provided. The latter part of the article concentrates on issues related to technology and its relationship to the oral and written word. The term ‘technauriture’ has been coined in order to refer to this process. The contribution of eLearning4Africa (www.elearning4africa.com) to the digitization process of Sitole’s poetry is acknowledged.
- Full Text:
- Date Issued: 2009
- Authors: Kaschula, Russell H , Mostert, André M
- Date: 2009
- Subjects: Sitole, Bongani, 1937- , Xhosa (African people) -- South Africa , Xhosa poetry , Folk poetry, Xhosa
- Language: English
- Type: article , text
- Identifier: http://hdl.handle.net/10962/59368 , vital:27566 , https://doi.org/10.1080/13696810903259384
- Description: This article analyzes the oral poetry, izibongo, produced by Xhosa oral poet Bongani Sitole (both in book and technological form). It will trace this poetry from the moment it was orally produced, through to the technologizing and publication of this poetry in book form and on a website. The initial part of this article looks at the life and work of the poet. A contextual analysis of selected poetry is provided. The latter part of the article concentrates on issues related to technology and its relationship to the oral and written word. The term ‘technauriture’ has been coined in order to refer to this process. The contribution of eLearning4Africa (www.elearning4africa.com) to the digitization process of Sitole’s poetry is acknowledged.
- Full Text:
- Date Issued: 2009
Effect of the killing method on post-mortem change in length of larvae of Thanatophilus micans (Fabricius, 1794) (Coleoptera: Silphidae) stored in 70% ethanol
- Midgley, John M, Villet, Martin H
- Authors: Midgley, John M , Villet, Martin H
- Date: 2009
- Language: English
- Type: text , Article
- Identifier: vital:6857 , http://hdl.handle.net/10962/d1011140
- Description: It is recommended that insect larvae collected for forensic purposes should be killed using the same method as was used to create existing models for rate of development. Certain killing methods have been shown to be preferable because they cause less distortion of the specimens, but these are not always practicable in a particular case, and so a method of correcting for effect of killing method is required. Larvae of all instars of Thanatophilus micans (Fabricius 1794) (Coleoptera: Silphidae) were measured and then killed by immersion in ethanol, immersion in hot water or freezing. Samples were re-measured immediately after death, then stored in excess 70% ethanol and re-measured after 1 week and again after 4 weeks. The change in length was significantly different from zero in all samples (t = -9.07022, p < 0.001). An analysis of covariance showed that instar, killing method and storage time all had a significant effect on the change in length. The results showed that T. micans larvae have a great potential for change in length during storage but that the change is not predictable, as the magnitude and sign of the change are variable.
- Full Text:
- Date Issued: 2009
- Authors: Midgley, John M , Villet, Martin H
- Date: 2009
- Language: English
- Type: text , Article
- Identifier: vital:6857 , http://hdl.handle.net/10962/d1011140
- Description: It is recommended that insect larvae collected for forensic purposes should be killed using the same method as was used to create existing models for rate of development. Certain killing methods have been shown to be preferable because they cause less distortion of the specimens, but these are not always practicable in a particular case, and so a method of correcting for effect of killing method is required. Larvae of all instars of Thanatophilus micans (Fabricius 1794) (Coleoptera: Silphidae) were measured and then killed by immersion in ethanol, immersion in hot water or freezing. Samples were re-measured immediately after death, then stored in excess 70% ethanol and re-measured after 1 week and again after 4 weeks. The change in length was significantly different from zero in all samples (t = -9.07022, p < 0.001). An analysis of covariance showed that instar, killing method and storage time all had a significant effect on the change in length. The results showed that T. micans larvae have a great potential for change in length during storage but that the change is not predictable, as the magnitude and sign of the change are variable.
- Full Text:
- Date Issued: 2009
Exploratory mathematics talk in a second language: a sociolinguistic perspective:
- Graven, Mellony, Robertson, Sally-Ann
- Authors: Graven, Mellony , Robertson, Sally-Ann
- Date: 2009
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/69907 , vital:29594 , https://doi.org/10.1007/s11858-018-0952-2
- Description: This paper illuminates challenges confronting teachers and students at the literacy/numeracy interface in contexts where students have not developed sufficient English language proficiency to be learning mathematics through English but, due to socio-politically and economically driven perceptions are being taught in English. We analyse transcript data of classroom talk in a South African grade 4 mathematics lesson on fractions. Together with interview data, the lesson data highlight some of the consequences students’ diminished access to their home language appear to have on their access to mathematical meaning-making.
- Full Text:
- Date Issued: 2009
- Authors: Graven, Mellony , Robertson, Sally-Ann
- Date: 2009
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/69907 , vital:29594 , https://doi.org/10.1007/s11858-018-0952-2
- Description: This paper illuminates challenges confronting teachers and students at the literacy/numeracy interface in contexts where students have not developed sufficient English language proficiency to be learning mathematics through English but, due to socio-politically and economically driven perceptions are being taught in English. We analyse transcript data of classroom talk in a South African grade 4 mathematics lesson on fractions. Together with interview data, the lesson data highlight some of the consequences students’ diminished access to their home language appear to have on their access to mathematical meaning-making.
- Full Text:
- Date Issued: 2009
Foreign policy ambiguity on the part of an emergent middle power: South African foreign policy through other lenses
- Serrão, Olivier, Bischoff, Paul, 1954-
- Authors: Serrão, Olivier , Bischoff, Paul, 1954-
- Date: 2009
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/161464 , vital:40629 , DOI: 10.1080/02589341003600189
- Description: This paper attempts to address the ambiguity so frequently highlighted in South Africa's post-apartheid foreign policy. Three central arguments are put forward. Firstly, it is argued that traditional accounts of South Africa's foreign policy, utilizing rationalist or ‘mainstream’ theories of International Relations, are insufficient in themselves to explain the complexities inherent in the country's foreign policy. In this regard, constructivist IR theory offers several key insights into studies of South Africa's foreign policy. Secondly, although it is argued that constructivism, particularly its focus on identity, is crucial to understanding South African foreign policy, it alone cannot sufficiently explain its reception or results on the world stage. Finally, it is argued that in order to fully appreciate both the nature and effects of South Africa's foreign policy, a mixed focus, incorporating insights from both constructivist and materialist-based theories of IR, is necessary.
- Full Text:
- Date Issued: 2009
- Authors: Serrão, Olivier , Bischoff, Paul, 1954-
- Date: 2009
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/161464 , vital:40629 , DOI: 10.1080/02589341003600189
- Description: This paper attempts to address the ambiguity so frequently highlighted in South Africa's post-apartheid foreign policy. Three central arguments are put forward. Firstly, it is argued that traditional accounts of South Africa's foreign policy, utilizing rationalist or ‘mainstream’ theories of International Relations, are insufficient in themselves to explain the complexities inherent in the country's foreign policy. In this regard, constructivist IR theory offers several key insights into studies of South Africa's foreign policy. Secondly, although it is argued that constructivism, particularly its focus on identity, is crucial to understanding South African foreign policy, it alone cannot sufficiently explain its reception or results on the world stage. Finally, it is argued that in order to fully appreciate both the nature and effects of South Africa's foreign policy, a mixed focus, incorporating insights from both constructivist and materialist-based theories of IR, is necessary.
- Full Text:
- Date Issued: 2009
Rapid UPLC - MS/MS method for the determination of ketoprofen in human dermal microdialysis samples
- Tettey-Amlalo, Ralph N O, Kanfer, Isadore
- Authors: Tettey-Amlalo, Ralph N O , Kanfer, Isadore
- Date: 2009
- Language: English
- Type: text , Article
- Identifier: vital:6444 , http://hdl.handle.net/10962/d1006631
- Description: Dermal microdialysis (DMD) is a technique capable of determining the percutaneous penetration of drugs from topical formulations intended for local and/or regional activity. Typically, the concentrations of drug collected in dialysates are very low, generally in the ng/ml or even pg/ml range. An additional challenge is the very low volume of sample collected at each collection time and which can range from 1 to 30 μl only. Hence the objective was to develop and validate a rapid, accurate, precise, reproducible and highly sensitive LC–MS/MS method for the quantitative analysis of ketoprofen (KET) in dialystes following application of a topical gel product to the skin of human subjects. UPLC–MS/MS was used and KET was separated on an Acquity™ UPLC BEH C18 column (100 mm × 2.1 mm i.d., 1.7 μm) and analysed in negative-ion (NI) electrospray ionisation (ESI) mode. The mobile phase (MP) consisted of acetonitrile:methanol:water (60:20:20, v/v/v) under isocratic conditions at a flow rate of 0.3 ml/min. Samples were extracted using ethyl acetate with ibuprofen (IBU) as internal standard (IS) and the organic solvent was then evaporated to dryness and the residue re-constituted in methanol. 5 μl samples were injected and analysis was performed at ambient temperature 22 ± 0.5 °C. KET and IBU eluted at 1.07 and 1.49 min, respectively. KET and IBU responses were optimised at the transitions 253.00 > 209.00 and 205.00 > 161.00, respectively. Calibration curves were linear over the range 0.5–500 ng/ml with correlation coefficients > 0.999. The accuracy and precision of the method were found to be between 99.97% and 104.67% (R.S.D. < 2%) and the mean recovery of KET from normal saline was 88.03 ± 0.3% (R.S.D. < 2.20%). The LLOQ and LOD values were found to be 0.5 and 0.1 ng/ml respectively whereas the ULOD was set at 500 ng/ml. The method was successfully applied to determine the bioavailability of KET following application of topical KET gel, Fastum® gel, to the skin of human volunteers.
- Full Text:
- Date Issued: 2009
- Authors: Tettey-Amlalo, Ralph N O , Kanfer, Isadore
- Date: 2009
- Language: English
- Type: text , Article
- Identifier: vital:6444 , http://hdl.handle.net/10962/d1006631
- Description: Dermal microdialysis (DMD) is a technique capable of determining the percutaneous penetration of drugs from topical formulations intended for local and/or regional activity. Typically, the concentrations of drug collected in dialysates are very low, generally in the ng/ml or even pg/ml range. An additional challenge is the very low volume of sample collected at each collection time and which can range from 1 to 30 μl only. Hence the objective was to develop and validate a rapid, accurate, precise, reproducible and highly sensitive LC–MS/MS method for the quantitative analysis of ketoprofen (KET) in dialystes following application of a topical gel product to the skin of human subjects. UPLC–MS/MS was used and KET was separated on an Acquity™ UPLC BEH C18 column (100 mm × 2.1 mm i.d., 1.7 μm) and analysed in negative-ion (NI) electrospray ionisation (ESI) mode. The mobile phase (MP) consisted of acetonitrile:methanol:water (60:20:20, v/v/v) under isocratic conditions at a flow rate of 0.3 ml/min. Samples were extracted using ethyl acetate with ibuprofen (IBU) as internal standard (IS) and the organic solvent was then evaporated to dryness and the residue re-constituted in methanol. 5 μl samples were injected and analysis was performed at ambient temperature 22 ± 0.5 °C. KET and IBU eluted at 1.07 and 1.49 min, respectively. KET and IBU responses were optimised at the transitions 253.00 > 209.00 and 205.00 > 161.00, respectively. Calibration curves were linear over the range 0.5–500 ng/ml with correlation coefficients > 0.999. The accuracy and precision of the method were found to be between 99.97% and 104.67% (R.S.D. < 2%) and the mean recovery of KET from normal saline was 88.03 ± 0.3% (R.S.D. < 2.20%). The LLOQ and LOD values were found to be 0.5 and 0.1 ng/ml respectively whereas the ULOD was set at 500 ng/ml. The method was successfully applied to determine the bioavailability of KET following application of topical KET gel, Fastum® gel, to the skin of human volunteers.
- Full Text:
- Date Issued: 2009
Reviews: Unsettling Questions: Palestine, Israel, the Holy Land and Zion
- Stähler, A, Vice, S, Brauner, D, Bassi, S, Naidu, Samantha, King, B, O'Neal, G S, Aldama, F L, Gibbs, J, Rotstein, J R U, Calderaro, M A
- Authors: Stähler, A , Vice, S , Brauner, D , Bassi, S , Naidu, Samantha , King, B , O'Neal, G S , Aldama, F L , Gibbs, J , Rotstein, J R U , Calderaro, M A
- Date: 2009
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/157948 , vital:40133 , https://doi.org/10.1080/02690050802589479
- Description: Reviews: Unsettling Questions: Palestine, Israel, the Holy Land and Zion
- Full Text:
- Date Issued: 2009
- Authors: Stähler, A , Vice, S , Brauner, D , Bassi, S , Naidu, Samantha , King, B , O'Neal, G S , Aldama, F L , Gibbs, J , Rotstein, J R U , Calderaro, M A
- Date: 2009
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/157948 , vital:40133 , https://doi.org/10.1080/02690050802589479
- Description: Reviews: Unsettling Questions: Palestine, Israel, the Holy Land and Zion
- Full Text:
- Date Issued: 2009
Stronger induction of callose deposition in barley by Russian wheat aphid than bird cherry-oat aphid is not associated with differences in callose synthase or ≤-1,3-glucanase expression
- Saheed, Sefiu A, Cierlik, Izabela, Larsson, Kristina A E, Delp, Gabriele, Bradley, Graeme, Jonsson, Lisbeth M V, Botha, Christiaan E J
- Authors: Saheed, Sefiu A , Cierlik, Izabela , Larsson, Kristina A E , Delp, Gabriele , Bradley, Graeme , Jonsson, Lisbeth M V , Botha, Christiaan E J
- Date: 2009
- Language: English
- Type: Article
- Identifier: vital:6542 , http://hdl.handle.net/10962/d1005984
- Description: The effects of infestation by the bird cherry-oat aphid (BCA), (Rhopalosiphum padi L) and the Russian wheat aphid (RWA) (Diuraphis noxia Mordvilko) on callose deposition and gene expression related to callose accumulation were investigated in barley (Hordeum vulgare L. cv. Clipper). The BCA, which gives no visible symptoms, induced very limited callose deposition, even after 14 days of infestation. In contrast, RWA, which causes chlorosis, white and yellow streaking and leaf rolling, induced callose accumulation already after 24h in longitudinal leaf veins. The deposition was pronounced after 72 h, progressing during 7 and 14 days of infestation. In RWA-infested source leaves, callose was also induced in longitudinal veins basipetal to the aphid-infested tissue, whereas in sink leaves, more callose deposition was found above the feeding sites. Nine putative callose synthase genes were identified in a data base search, of which eight were expressed in the leaves, but with similar level of expression in control and aphid-infested tissue. Four out of 12 examined β-1,3-glucanases were expressed in the leaves, and three of them were up-regulated in aphid-infested tissue. They were all more strongly induced by RWA than BCA. The results suggest that callose accumulation may be partly responsible for the symptoms resulting from RWA feeding and that a callose-inducing signal may be transported in the phloem. Furthermore it is concluded that the absence of callose deposition in BCA-infested leaves is not due to a stronger induction of callose-degrading β-1,3-glucanases in this tissue, as compared to RWA-infested leaves.
- Full Text:
- Date Issued: 2009
- Authors: Saheed, Sefiu A , Cierlik, Izabela , Larsson, Kristina A E , Delp, Gabriele , Bradley, Graeme , Jonsson, Lisbeth M V , Botha, Christiaan E J
- Date: 2009
- Language: English
- Type: Article
- Identifier: vital:6542 , http://hdl.handle.net/10962/d1005984
- Description: The effects of infestation by the bird cherry-oat aphid (BCA), (Rhopalosiphum padi L) and the Russian wheat aphid (RWA) (Diuraphis noxia Mordvilko) on callose deposition and gene expression related to callose accumulation were investigated in barley (Hordeum vulgare L. cv. Clipper). The BCA, which gives no visible symptoms, induced very limited callose deposition, even after 14 days of infestation. In contrast, RWA, which causes chlorosis, white and yellow streaking and leaf rolling, induced callose accumulation already after 24h in longitudinal leaf veins. The deposition was pronounced after 72 h, progressing during 7 and 14 days of infestation. In RWA-infested source leaves, callose was also induced in longitudinal veins basipetal to the aphid-infested tissue, whereas in sink leaves, more callose deposition was found above the feeding sites. Nine putative callose synthase genes were identified in a data base search, of which eight were expressed in the leaves, but with similar level of expression in control and aphid-infested tissue. Four out of 12 examined β-1,3-glucanases were expressed in the leaves, and three of them were up-regulated in aphid-infested tissue. They were all more strongly induced by RWA than BCA. The results suggest that callose accumulation may be partly responsible for the symptoms resulting from RWA feeding and that a callose-inducing signal may be transported in the phloem. Furthermore it is concluded that the absence of callose deposition in BCA-infested leaves is not due to a stronger induction of callose-degrading β-1,3-glucanases in this tissue, as compared to RWA-infested leaves.
- Full Text:
- Date Issued: 2009
Utopianism and educational processes in the United Nations Decade of Education for Sustainable Development: a critical reflection
- Authors: Lotz-Sisitka, Heila
- Date: 2009
- Subjects: To be catalogued
- Language: English
- Type: text , book chapter
- Identifier: http://hdl.handle.net/10962/437367 , vital:73373 , ISBN 978-9086860937 , https://doi.org/10.3920/9789086866915_007
- Description: South Africa and its recent political transformation pro-cess, infused with hope for a better future, is often pre-sented as a utopian form of democracy – or an icon of hope – nationally and in the contemporary global land-scape. Similarly, adult hopes for youth, and youth idealism itself, are often utopian in nature, and young people are often iconised in society as the hope for the future. Re-cent international policy literature on education for sus-tainable development puts forward the utopian concepts of sustainable development and transformed learning (UNESCO 2005a) as objects for educational thinking and practice, and ethical codes such as the Earth Charter (www.earthcharter.org) present useful visions and guid-ance on how to think about and create a better world. But, the realities of the day keep such utopianism in check. Today, South Africa is experiencing xenophobic vio-lence, extreme levels of crime, and continued disenfran-chisement.
- Full Text:
- Date Issued: 2009
- Authors: Lotz-Sisitka, Heila
- Date: 2009
- Subjects: To be catalogued
- Language: English
- Type: text , book chapter
- Identifier: http://hdl.handle.net/10962/437367 , vital:73373 , ISBN 978-9086860937 , https://doi.org/10.3920/9789086866915_007
- Description: South Africa and its recent political transformation pro-cess, infused with hope for a better future, is often pre-sented as a utopian form of democracy – or an icon of hope – nationally and in the contemporary global land-scape. Similarly, adult hopes for youth, and youth idealism itself, are often utopian in nature, and young people are often iconised in society as the hope for the future. Re-cent international policy literature on education for sus-tainable development puts forward the utopian concepts of sustainable development and transformed learning (UNESCO 2005a) as objects for educational thinking and practice, and ethical codes such as the Earth Charter (www.earthcharter.org) present useful visions and guid-ance on how to think about and create a better world. But, the realities of the day keep such utopianism in check. Today, South Africa is experiencing xenophobic vio-lence, extreme levels of crime, and continued disenfran-chisement.
- Full Text:
- Date Issued: 2009
A framework for recuperation: HIV/AIDS and the Keiskamma Altarpiece
- Authors: Schmahmann, Brenda
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/147593 , vital:38652 , https://doi.org/10.1162/afar.2010.43.3.34
- Description: South Africa has the largest number of people living with HIV of any nation in the world. While various conditions and circumstances have made South Africa especially susceptible to an HIV/AIDS pandemic, its leadership has not recognized the impact of the disease or found appropriate strategies to address rising rates of infection. Thabo Mbeki's presidency (1999—2008) and the appointment of Manto Tshabalala-Msimang as his health minister were disastrous in terms of the pandemic.
- Full Text:
- Date Issued: 2010
- Authors: Schmahmann, Brenda
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/147593 , vital:38652 , https://doi.org/10.1162/afar.2010.43.3.34
- Description: South Africa has the largest number of people living with HIV of any nation in the world. While various conditions and circumstances have made South Africa especially susceptible to an HIV/AIDS pandemic, its leadership has not recognized the impact of the disease or found appropriate strategies to address rising rates of infection. Thabo Mbeki's presidency (1999—2008) and the appointment of Manto Tshabalala-Msimang as his health minister were disastrous in terms of the pandemic.
- Full Text:
- Date Issued: 2010
Climate injustice: How should education respond?
- Authors: Lotz-Sisitka, Heila
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , book chapter
- Identifier: http://hdl.handle.net/10962/437268 , vital:73364 , ISBN 9780203866399 , https://www.taylorfrancis.com/chapters/edit/10.4324/9780203866399-11/climate-injustice-education-respond-heila-lotz-sisitka
- Description: The Fourth Assessment Report of the Intergovernmental Panel on Cli-mate Change (IPCC 2007) identifi es Africa as one of the continents of the world most vulnerable to climate change. Africa’s vulnerability to climate change is aggravated by the interaction of multiple stresses such as poverty, poor governance, and weak institutions, limited access to capi-tal (including technology), ecosystem degradation, confl ict and disasters (UNEP 2006), and a generally poor quality of education (UNESCO 2004). The climate injustices and exacerbating circumstances experienced by poor and weak states today lie in the long-term historical emergence of a modern (and increasingly global) world order framed by a hegemonic Westphalian state system. This state system privileges exclusive, undi-vided sovereignty over a bounded territory (Fraser 2008), and is known more popularly as the ‘nation state’ system.
- Full Text:
- Date Issued: 2010
- Authors: Lotz-Sisitka, Heila
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , book chapter
- Identifier: http://hdl.handle.net/10962/437268 , vital:73364 , ISBN 9780203866399 , https://www.taylorfrancis.com/chapters/edit/10.4324/9780203866399-11/climate-injustice-education-respond-heila-lotz-sisitka
- Description: The Fourth Assessment Report of the Intergovernmental Panel on Cli-mate Change (IPCC 2007) identifi es Africa as one of the continents of the world most vulnerable to climate change. Africa’s vulnerability to climate change is aggravated by the interaction of multiple stresses such as poverty, poor governance, and weak institutions, limited access to capi-tal (including technology), ecosystem degradation, confl ict and disasters (UNEP 2006), and a generally poor quality of education (UNESCO 2004). The climate injustices and exacerbating circumstances experienced by poor and weak states today lie in the long-term historical emergence of a modern (and increasingly global) world order framed by a hegemonic Westphalian state system. This state system privileges exclusive, undi-vided sovereignty over a bounded territory (Fraser 2008), and is known more popularly as the ‘nation state’ system.
- Full Text:
- Date Issued: 2010
Gaming culture: what lessons for pedagogy in South Africa?
- Kaschula, Russell H, Mostert, André M
- Authors: Kaschula, Russell H , Mostert, André M
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/175189 , vital:42551 , https://hdl.handle.net/10520/EJC30895
- Description: Gaming culture is becoming increasingly ubiquitous. Whereas before it was the reserve of those who were prepared to invest in the latest gaming hardware, increasingly powerful entry level machines coupled with more powerful mobile technologies are impacting on how young learners and students assimilate information. This evolving characteristic exhibited by the learners across South Africa must generate a serious reflection of education and training methodologies. Historically, education structures have been slow to embrace the changes that are imperative if the products of the process are to be adequately prepared for the future that faces them. One of the most telling realities of the modern era, or the planetary phase as it is now being tagged, is rapid change. The question that all educators need to ask is 'how is my pedagogic approach evolving'?.
- Full Text:
- Date Issued: 2010
- Authors: Kaschula, Russell H , Mostert, André M
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/175189 , vital:42551 , https://hdl.handle.net/10520/EJC30895
- Description: Gaming culture is becoming increasingly ubiquitous. Whereas before it was the reserve of those who were prepared to invest in the latest gaming hardware, increasingly powerful entry level machines coupled with more powerful mobile technologies are impacting on how young learners and students assimilate information. This evolving characteristic exhibited by the learners across South Africa must generate a serious reflection of education and training methodologies. Historically, education structures have been slow to embrace the changes that are imperative if the products of the process are to be adequately prepared for the future that faces them. One of the most telling realities of the modern era, or the planetary phase as it is now being tagged, is rapid change. The question that all educators need to ask is 'how is my pedagogic approach evolving'?.
- Full Text:
- Date Issued: 2010
A review of the biological control programmes on Eichhornia crassipes (C. mart.) solms (Pontederiaceae), Salvinia molesta DS Mitch.(Salviniaceae), Pistia stratiotes L.(Araceae), Myriophyllum aquaticum (vell.) verdc.(Haloragaceae) and Azolla filiculoides Lam.(Azollaceae) in South Africa
- Coetzee, Julie A, Hill, Martin P, Byrne, Marcus J
- Authors: Coetzee, Julie A , Hill, Martin P , Byrne, Marcus J
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/451285 , vital:75036 , https://hdl.handle.net/10520/EJC32900
- Description: Biological control against water hyacinth, Eichhornia crassipes (C. Mart.) Solms (Pontederiaceae), salvinia, Salvinia molesta D.S. Mitch. (Salviniaceae), water lettuce, Pistia stratiotes L. (Araceae), parrot's feather, Myriophyllum aquaticum (Vell.) Verdc. (Haloragaceae), and red water fern, Azolla filiculoides Lam. (Azollaceae) has been ongoing in South Africa since the release of the first biological control agent on water hyacinth in 1974. This review provides an account of progress for the period from 1999. Post-release evaluations over the last three years have shown that, with the exception of water hyacinth, all of these problematic aquatic plants have been suppressed effectively using classical biological control. In eutrophic water bodies at high elevations that experience cold winters, an integrated approach, that includes herbicide application and augmentive biological control, is required against water hyacinth. The grasshopper Cornops aquaticum (Brüner) (Orthoptera: Acrididae: Leptysminae) has recently been released as a new agent for water hyacinth, and Megamelus scutellaris Berg (Hemiptera: Delphacidae) and Taosa longula Remes Lenicov (Hemiptera: Dictyopharidae) are being considered for release on water hyacinth. The longterm management of alien aquatic plants in South Africa relies on the prevention of new introductions of aquatic plant species that could replace those that have been controlled, and, more importantly, on a reduction in nutrient levels in South Africa's aquatic ecosystems.
- Full Text:
- Date Issued: 2011
- Authors: Coetzee, Julie A , Hill, Martin P , Byrne, Marcus J
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/451285 , vital:75036 , https://hdl.handle.net/10520/EJC32900
- Description: Biological control against water hyacinth, Eichhornia crassipes (C. Mart.) Solms (Pontederiaceae), salvinia, Salvinia molesta D.S. Mitch. (Salviniaceae), water lettuce, Pistia stratiotes L. (Araceae), parrot's feather, Myriophyllum aquaticum (Vell.) Verdc. (Haloragaceae), and red water fern, Azolla filiculoides Lam. (Azollaceae) has been ongoing in South Africa since the release of the first biological control agent on water hyacinth in 1974. This review provides an account of progress for the period from 1999. Post-release evaluations over the last three years have shown that, with the exception of water hyacinth, all of these problematic aquatic plants have been suppressed effectively using classical biological control. In eutrophic water bodies at high elevations that experience cold winters, an integrated approach, that includes herbicide application and augmentive biological control, is required against water hyacinth. The grasshopper Cornops aquaticum (Brüner) (Orthoptera: Acrididae: Leptysminae) has recently been released as a new agent for water hyacinth, and Megamelus scutellaris Berg (Hemiptera: Delphacidae) and Taosa longula Remes Lenicov (Hemiptera: Dictyopharidae) are being considered for release on water hyacinth. The longterm management of alien aquatic plants in South Africa relies on the prevention of new introductions of aquatic plant species that could replace those that have been controlled, and, more importantly, on a reduction in nutrient levels in South Africa's aquatic ecosystems.
- Full Text:
- Date Issued: 2011
Above ground woody community attributes, biomass and carbon stocks along a rainfall gradient in the savannas of the central lowveld, South Africa
- Shackleton, Charlie M, Scholes, Robert J
- Authors: Shackleton, Charlie M , Scholes, Robert J
- Date: 2011
- Language: English
- Type: Article
- Identifier: vital:6658 , http://hdl.handle.net/10962/d1007079
- Description: Enumeration of carbon stocks at benchmark sites is a necessary activity in assessing the potential carbon sequestration and possible generation of credits through restoration of intensively impacted sites. However, there is a lack of empirical studies throughout much of the savannas of sub-Saharan Africa, including South Africa. We report an estimation of species specific and site biomass and carbon stocks, and general vegetation structural attributes from three protected areas along a rainfall gradient in the central lowveld, South Africa. Estimates of biomass and carbon stocks were effected through destructive sampling to establish locally derived allometric equations. There was a gradient of increasing woody density, height of the canopy, number of species, density of regenerative stems and a greater proportion of stems in small size classes from the arid locality to the mesic locality, with the semi-arid locality being intermediate. The proportion of spinescent species decreased with increasing rainfall. The mesic locality was significantly more woody than either the arid or semi-arid sites, having double the biomass, four times the density and 40% higher basal area. Above ground carbon pools were also higher; carbon stocks were approximately 9 t/ha for the arid and semi-arid sites and 18 t/ha for the mesic site.
- Full Text:
- Date Issued: 2011
- Authors: Shackleton, Charlie M , Scholes, Robert J
- Date: 2011
- Language: English
- Type: Article
- Identifier: vital:6658 , http://hdl.handle.net/10962/d1007079
- Description: Enumeration of carbon stocks at benchmark sites is a necessary activity in assessing the potential carbon sequestration and possible generation of credits through restoration of intensively impacted sites. However, there is a lack of empirical studies throughout much of the savannas of sub-Saharan Africa, including South Africa. We report an estimation of species specific and site biomass and carbon stocks, and general vegetation structural attributes from three protected areas along a rainfall gradient in the central lowveld, South Africa. Estimates of biomass and carbon stocks were effected through destructive sampling to establish locally derived allometric equations. There was a gradient of increasing woody density, height of the canopy, number of species, density of regenerative stems and a greater proportion of stems in small size classes from the arid locality to the mesic locality, with the semi-arid locality being intermediate. The proportion of spinescent species decreased with increasing rainfall. The mesic locality was significantly more woody than either the arid or semi-arid sites, having double the biomass, four times the density and 40% higher basal area. Above ground carbon pools were also higher; carbon stocks were approximately 9 t/ha for the arid and semi-arid sites and 18 t/ha for the mesic site.
- Full Text:
- Date Issued: 2011
Elephants, compassion, and the largesse of literature
- Authors: Wylie, Dan
- Date: 2011
- Language: English
- Type: Text
- Identifier: vital:582 , http://hdl.handle.net/10962/d1018924
- Description: [From the text] Why is it that we do not raise a monument, a mausoleum, nor even a humble gravestone, to mark the death of every elephant? We habitually, even compulsively, do this for other humans, occasionally for treasured pets. Yet we do not do it for the most charismatic, gigantic, culturally resonant land animal we will ever encounter. Why not? Some possible answers. One: too much work. Another: we regard other animals as less conscious than ourselves; we are the only creatures who deserve to have our deaths so commemorated. A third: wild animals are part of wild ecosystems; it is ‘natural’ for them to die and to be reabsorbed namelessly back into those ecosystems. We humans, on the other hand, consider ourselves somehow separate from those ecosystems: we shield ourselves from ‘Nature’ with bricks and literatures while we live, with marble and epitaphs after we die.
- Full Text:
- Date Issued: 2011
- Authors: Wylie, Dan
- Date: 2011
- Language: English
- Type: Text
- Identifier: vital:582 , http://hdl.handle.net/10962/d1018924
- Description: [From the text] Why is it that we do not raise a monument, a mausoleum, nor even a humble gravestone, to mark the death of every elephant? We habitually, even compulsively, do this for other humans, occasionally for treasured pets. Yet we do not do it for the most charismatic, gigantic, culturally resonant land animal we will ever encounter. Why not? Some possible answers. One: too much work. Another: we regard other animals as less conscious than ourselves; we are the only creatures who deserve to have our deaths so commemorated. A third: wild animals are part of wild ecosystems; it is ‘natural’ for them to die and to be reabsorbed namelessly back into those ecosystems. We humans, on the other hand, consider ourselves somehow separate from those ecosystems: we shield ourselves from ‘Nature’ with bricks and literatures while we live, with marble and epitaphs after we die.
- Full Text:
- Date Issued: 2011