A description of gametogenesis in the panga Pterogymnus laniarius (Pisces: Sparidae) with comments on changes in maturity patterns over the past two decades
- Booth, Anthony J, Hecht, Thomas
- Authors: Booth, Anthony J , Hecht, Thomas
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/123542 , vital:35452 , https://doi.org/10.1080/02541858.1997.11448428
- Description: A description of gametogenesis in the panga Pferogymnus laniarius, a common endemic seabream species inhabiting the Agulhas Bank, South Africa, is presented. After sexual maturity, oogenesis and spermatogenesis continued throughout the year and were found to be similar to these processes in other seabream species and teleosts in general. Analysis of maturity data over the past two decades revealed a significant change in both age and size-at-maturity, a response to fishing pressure.
- Full Text:
- Authors: Booth, Anthony J , Hecht, Thomas
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/123542 , vital:35452 , https://doi.org/10.1080/02541858.1997.11448428
- Description: A description of gametogenesis in the panga Pferogymnus laniarius, a common endemic seabream species inhabiting the Agulhas Bank, South Africa, is presented. After sexual maturity, oogenesis and spermatogenesis continued throughout the year and were found to be similar to these processes in other seabream species and teleosts in general. Analysis of maturity data over the past two decades revealed a significant change in both age and size-at-maturity, a response to fishing pressure.
- Full Text:
A model for the analysis of small group interaction–and beyond?:
- Authors: Hunt, Sally
- Date: 2012
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/139171 , vital:37711 , DOI: 10.1080/10118063.1997.9724122
- Description: This article describes a branching model developed for the analysis of interaction in small teaching groups in a tertiary setting. Based within Conversation Analysis, the model constitutes a set of justifications for the validity of utterances in terms of their place on the conversational floor. Examples of the classifications included in the model are provided from a broader study of interaction in tutorials at an Eastern Cape university. It is suggested that while the model was developed for a specific context, it could be adapted for use in a variety of contexts.
- Full Text:
- Authors: Hunt, Sally
- Date: 2012
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/139171 , vital:37711 , DOI: 10.1080/10118063.1997.9724122
- Description: This article describes a branching model developed for the analysis of interaction in small teaching groups in a tertiary setting. Based within Conversation Analysis, the model constitutes a set of justifications for the validity of utterances in terms of their place on the conversational floor. Examples of the classifications included in the model are provided from a broader study of interaction in tutorials at an Eastern Cape university. It is suggested that while the model was developed for a specific context, it could be adapted for use in a variety of contexts.
- Full Text:
The effects of economic incentives in controlling pollution in the South African leather industry: die uitwerking van ekonomiese insentiewe op die beheer van besoedeling in die Suid-Afrikaanse leerbedryf
- Mowat, Shaun P, Antrobus, Geoffrey G, Fraser, Gavin C G
- Authors: Mowat, Shaun P , Antrobus, Geoffrey G , Fraser, Gavin C G
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/143057 , vital:38197 , DOI: 10.1080/03031853.1997.9523487
- Description: Pollution of the environment is becoming an increasingly serious problem. A large contributor to this is industry which generates effluent as a by-product of its production process. Two methods of controlling the pollution generated by industry are the so-called “command and control” techniques and economic incentives. In theory, economic incentives promise a more economically efficient and equitable means of pollution control. This paper sets out to ascertain whether this would hold in practice by applying environmental economic theory to the practical problem of controlling the effluent generated by one particular industry, viz the South African leather industry.
- Full Text:
- Authors: Mowat, Shaun P , Antrobus, Geoffrey G , Fraser, Gavin C G
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/143057 , vital:38197 , DOI: 10.1080/03031853.1997.9523487
- Description: Pollution of the environment is becoming an increasingly serious problem. A large contributor to this is industry which generates effluent as a by-product of its production process. Two methods of controlling the pollution generated by industry are the so-called “command and control” techniques and economic incentives. In theory, economic incentives promise a more economically efficient and equitable means of pollution control. This paper sets out to ascertain whether this would hold in practice by applying environmental economic theory to the practical problem of controlling the effluent generated by one particular industry, viz the South African leather industry.
- Full Text:
A description of gametogenesis in the panga Pterogymnus laniarius (Pisces: Sparidae) with comments on changes in maturity patterns over the past two decades
- Booth, Anthony J, Hecht, Thomas
- Authors: Booth, Anthony J , Hecht, Thomas
- Date: 1997
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/446930 , vital:74571 , https://www.ajol.info/index.php/az/article/view/154565
- Description: A description of gametogenesis in the panga Pferogymnus laniarius, a common endemic seabream species inhabiting the Agulhas Bank, South Africa, is presented. After sexual maturity, oogenesis and spermatogenesis continued throughout the year and were found to be similar to these processes in other seabream species and teleosts in general. Analysis of maturity data over the past two decades revealed a significant change in both age and size-at-maturity, a response to fishing pressure.
- Full Text:
- Authors: Booth, Anthony J , Hecht, Thomas
- Date: 1997
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/446930 , vital:74571 , https://www.ajol.info/index.php/az/article/view/154565
- Description: A description of gametogenesis in the panga Pferogymnus laniarius, a common endemic seabream species inhabiting the Agulhas Bank, South Africa, is presented. After sexual maturity, oogenesis and spermatogenesis continued throughout the year and were found to be similar to these processes in other seabream species and teleosts in general. Analysis of maturity data over the past two decades revealed a significant change in both age and size-at-maturity, a response to fishing pressure.
- Full Text:
A liberal journal for a conservative estimate
- COSATU
- Authors: COSATU
- Date: 1997
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/139694 , vital:37769
- Description: AIDS starts with a virus. Like all viruses, it’s a parasite fragile and impotent. It cannot reproduce except within human cells, It’s tiny. Over 500,000,000 HIV viruses could fit the dot on top of this i. In the wrong environment HIV dies. In the right environment, it dominates. AIDS is dominating South Africa with all ready 2.4 million people infected, with estimates of 20% of the working population being infected within four years. South Africa has willingly opened itself to domination. This time, not colonial political oppression or the cruelty of racial apartheid, but domination by a virus all of us saw coming. The Ministry of Health welcomed the virus by failing to impart a practical and realistic National AIDS strategy. Instead, entertaining us with a R14.3 million play called Sarafina 2 and a discredited new cure for AIDS Virodene.
- Full Text:
- Authors: COSATU
- Date: 1997
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/139694 , vital:37769
- Description: AIDS starts with a virus. Like all viruses, it’s a parasite fragile and impotent. It cannot reproduce except within human cells, It’s tiny. Over 500,000,000 HIV viruses could fit the dot on top of this i. In the wrong environment HIV dies. In the right environment, it dominates. AIDS is dominating South Africa with all ready 2.4 million people infected, with estimates of 20% of the working population being infected within four years. South Africa has willingly opened itself to domination. This time, not colonial political oppression or the cruelty of racial apartheid, but domination by a virus all of us saw coming. The Ministry of Health welcomed the virus by failing to impart a practical and realistic National AIDS strategy. Instead, entertaining us with a R14.3 million play called Sarafina 2 and a discredited new cure for AIDS Virodene.
- Full Text:
Advice skills: a guide for NUMSA shopstewards, 1996-1999
- National Union of Metalworkers of South Africa (NUMSA)
- Authors: National Union of Metalworkers of South Africa (NUMSA)
- Date: 1997
- Language: English
- Type: book , text
- Identifier: http://hdl.handle.net/10962/68663 , vital:29303
- Description: The manual serves as a guide for shopstewards of the National Union of Metalworkers of South Africa (NUMSA), in assisting and providing union members with information pertaining to the basics of fair dismissal, the Unemployment Insurance Fund (UIF), Compensation for Occupational Injuries and Diseases Act (COIDA), tax and pension matters.
- Full Text:
- Authors: National Union of Metalworkers of South Africa (NUMSA)
- Date: 1997
- Language: English
- Type: book , text
- Identifier: http://hdl.handle.net/10962/68663 , vital:29303
- Description: The manual serves as a guide for shopstewards of the National Union of Metalworkers of South Africa (NUMSA), in assisting and providing union members with information pertaining to the basics of fair dismissal, the Unemployment Insurance Fund (UIF), Compensation for Occupational Injuries and Diseases Act (COIDA), tax and pension matters.
- Full Text:
Apparent range expansion of the redbilled quelea Quelea quelea in the Eastern Cape Province of South Africa
- Authors: Whittington-Jones, C A
- Date: 1997
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/448426 , vital:74729 , https://doi.org/10.1080/00306525.1997.9639720
- Description: Distribution records obtained from the South African Bird Atlas Project (SABAP) and from published literature show that the known distribution of Redbilled Quelea in the Eastern Cape has changed dramatically over the last century. Increased search effort following the initiation of SABAP may explain the range expansion, but changes in agricultural practice have probably been a contributing factor.
- Full Text:
- Authors: Whittington-Jones, C A
- Date: 1997
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/448426 , vital:74729 , https://doi.org/10.1080/00306525.1997.9639720
- Description: Distribution records obtained from the South African Bird Atlas Project (SABAP) and from published literature show that the known distribution of Redbilled Quelea in the Eastern Cape has changed dramatically over the last century. Increased search effort following the initiation of SABAP may explain the range expansion, but changes in agricultural practice have probably been a contributing factor.
- Full Text:
BI-Annual National Conference - Fisheries Policy and Response to White Paper
- Food and Allied Workers Union (FAWU)
- Authors: Food and Allied Workers Union (FAWU)
- Date: 1997
- Subjects: COSATU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/110077 , vital:33221
- Description: This paper is intended to serve as an aid to discussion in the Commission dealing with Sea Fisheries. Accordingly, its various sections provide an overview of the key issues which can inform discussion. Historically, access to marine resources was unrestricted. In order to facilitate the monopolisation of the fishing resource by a few white companies, a system of quotas was introduced. In this way many black fisher folk lost the access rights they had had for generations. At the present time, the fishing industry is completely biased in favour of a few large and medium sized white companies. This is illustrated by the fact that just three (3) companies hold;72% of the hake quota ;75% of the abalone quota , and 71 % of the sole quota. Overall , across all species, approximately nine tenths (9/10) of the resource is controlled by a hand-full of companies. Since 1994, some of these companies have attempted to blacken their faces. They have also sold minority shares to some, black business consortia. Further, a few members of the black elite have been given quotas. None of the above amounts to any kind of restructuring. None of the historic imbalances have been addressed. The above have merely been attempts to confuse the issue and to frustrate any process that attempts to restructure the industry. Prior to, and after the 1994 election, there were various initiatives by Alliance members to outline an equitable and just policy of reconstruction and development for the fishing industry.
- Full Text:
- Authors: Food and Allied Workers Union (FAWU)
- Date: 1997
- Subjects: COSATU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/110077 , vital:33221
- Description: This paper is intended to serve as an aid to discussion in the Commission dealing with Sea Fisheries. Accordingly, its various sections provide an overview of the key issues which can inform discussion. Historically, access to marine resources was unrestricted. In order to facilitate the monopolisation of the fishing resource by a few white companies, a system of quotas was introduced. In this way many black fisher folk lost the access rights they had had for generations. At the present time, the fishing industry is completely biased in favour of a few large and medium sized white companies. This is illustrated by the fact that just three (3) companies hold;72% of the hake quota ;75% of the abalone quota , and 71 % of the sole quota. Overall , across all species, approximately nine tenths (9/10) of the resource is controlled by a hand-full of companies. Since 1994, some of these companies have attempted to blacken their faces. They have also sold minority shares to some, black business consortia. Further, a few members of the black elite have been given quotas. None of the above amounts to any kind of restructuring. None of the historic imbalances have been addressed. The above have merely been attempts to confuse the issue and to frustrate any process that attempts to restructure the industry. Prior to, and after the 1994 election, there were various initiatives by Alliance members to outline an equitable and just policy of reconstruction and development for the fishing industry.
- Full Text:
Book Review: 1001 activities in environmental education
- Authors: Janse van Rensberg, Eureta
- Date: 1997
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/438683 , vital:73490 , xlink:href="https://www.ajol.info/index.php/sajee/article/view/137449"
- Description: Book Title. 1001 activities in environmental educa-tion (1997). Book Author. Nico Allers. Publisher. Kamel eon Publishers, Vereeniging
- Full Text:
- Authors: Janse van Rensberg, Eureta
- Date: 1997
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/438683 , vital:73490 , xlink:href="https://www.ajol.info/index.php/sajee/article/view/137449"
- Description: Book Title. 1001 activities in environmental educa-tion (1997). Book Author. Nico Allers. Publisher. Kamel eon Publishers, Vereeniging
- Full Text:
Catalytic behavior of osmium (II), rhodium (III) and ruthenium (II) Phthalocyanines towards the electrooxidation of cysteine on glassy carbon electrodes
- Sekota, Mantoa, Nyokong, Tebello
- Authors: Sekota, Mantoa , Nyokong, Tebello
- Date: 1997
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/293290 , vital:57072 , xlink:href=" https://doi.org/10.1002/elan.1140091608"
- Description: Glassy carbon electrodes (GCE's) modified with phthalocyanine complexes of Rh, Ru and Os are employed for the catalytic oxidation of cysteine. When cyanide and dimethylsulfoxide (DMSO) are used as axial ligands giving (DMSO)(Cl)RhIIIPc, [(CN)2RhIIIPc]−, (DMSO)2OsPcII, and [(DMSO)2Ru(II)Pc]·2DMSO complexes, the peak currents for the oxidation of cysteine increase after each scan, indicating an increase in the catalytic activity of the electrode with repetitive scanning. This improvement in the catalytic activity of the GCE after the first scan is attributed to the formation of dimeric π cation radical species at the electrode surface.
- Full Text:
- Authors: Sekota, Mantoa , Nyokong, Tebello
- Date: 1997
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/293290 , vital:57072 , xlink:href=" https://doi.org/10.1002/elan.1140091608"
- Description: Glassy carbon electrodes (GCE's) modified with phthalocyanine complexes of Rh, Ru and Os are employed for the catalytic oxidation of cysteine. When cyanide and dimethylsulfoxide (DMSO) are used as axial ligands giving (DMSO)(Cl)RhIIIPc, [(CN)2RhIIIPc]−, (DMSO)2OsPcII, and [(DMSO)2Ru(II)Pc]·2DMSO complexes, the peak currents for the oxidation of cysteine increase after each scan, indicating an increase in the catalytic activity of the electrode with repetitive scanning. This improvement in the catalytic activity of the GCE after the first scan is attributed to the formation of dimeric π cation radical species at the electrode surface.
- Full Text:
Debate on globalisation
- COSATU
- Authors: COSATU
- Date: 1997
- Subjects: COSATU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/172083 , vital:42156
- Description: At the Cosatu National Congress, a debate around the issue of globalisation erupted. At the core of the debate was whether the federation was opposed to globalisation or not. Some unions fell that as a federation we should be opposed to globalisation and all what it represents. Others felt that we should be opposed not to globalisation but its negative effects or the current form of globalisation.
- Full Text:
- Authors: COSATU
- Date: 1997
- Subjects: COSATU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/172083 , vital:42156
- Description: At the Cosatu National Congress, a debate around the issue of globalisation erupted. At the core of the debate was whether the federation was opposed to globalisation or not. Some unions fell that as a federation we should be opposed to globalisation and all what it represents. Others felt that we should be opposed not to globalisation but its negative effects or the current form of globalisation.
- Full Text:
Ecology and genetics of hybrid zones in the southern African Pycnonotus bulbul species complex
- Lloyd, Penn, Craig, Adrian J F K, Hulley, Patrick E, Essop, M Faadiel, Bloomer, Paulette, Crowe, Timothy M
- Authors: Lloyd, Penn , Craig, Adrian J F K , Hulley, Patrick E , Essop, M Faadiel , Bloomer, Paulette , Crowe, Timothy M
- Date: 1997
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/447801 , vital:74675 , https://doi.org/10.1080/00306525.1997.9639720
- Description: The closely related Blackeyed Bulbul Pycnonotus barbatus, Cape Bulbul P. capensis and Redeyed Bulbul P. nigricans have parapatric to locally sympatric distributions within southern Africa. Extensive hybridization along narrow transition zones between each of the three species pairs is described in a region of the Eastern Cape province, South Africa. The transition zones coincide with ecotones between different vegetation types, which in turn follow escarpments or mountain ranges. The lack of population density depressions within the hybrid zones, together with the variability of the hybrids, suggests the hybrids are viable. Sharp step clines in various phenotypic characters are described across the P. barbatus/P. nigricans hybrid zone. A mtDNA analysis found evidence of possible introgression between P. barbatus and P. capensis. All eight P. barbatus x P. nigricans hybrids analysed possessed P. barbatus mtDNA, suggesting the existence of either positive assortative mating or strong directional selection, but our data are unable to distinguish which.
- Full Text:
- Authors: Lloyd, Penn , Craig, Adrian J F K , Hulley, Patrick E , Essop, M Faadiel , Bloomer, Paulette , Crowe, Timothy M
- Date: 1997
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/447801 , vital:74675 , https://doi.org/10.1080/00306525.1997.9639720
- Description: The closely related Blackeyed Bulbul Pycnonotus barbatus, Cape Bulbul P. capensis and Redeyed Bulbul P. nigricans have parapatric to locally sympatric distributions within southern Africa. Extensive hybridization along narrow transition zones between each of the three species pairs is described in a region of the Eastern Cape province, South Africa. The transition zones coincide with ecotones between different vegetation types, which in turn follow escarpments or mountain ranges. The lack of population density depressions within the hybrid zones, together with the variability of the hybrids, suggests the hybrids are viable. Sharp step clines in various phenotypic characters are described across the P. barbatus/P. nigricans hybrid zone. A mtDNA analysis found evidence of possible introgression between P. barbatus and P. capensis. All eight P. barbatus x P. nigricans hybrids analysed possessed P. barbatus mtDNA, suggesting the existence of either positive assortative mating or strong directional selection, but our data are unable to distinguish which.
- Full Text:
FAWU - Response to the White Paper On A Marine Fisheries Policy For South Africa
- FAWU
- Authors: FAWU
- Date: 1997
- Subjects: FAWU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/118385 , vital:34625
- Description: This document has been written to inform Deputy President Thabo Mbeki of FAWU’s objections to the above-mentioned White Paper. It also includes FAWU’s recommendations for changing the policy. The fishing industry in South Africa is an Apartheid creation. Like other aspects of our society, it needs to be completely transformed and restructured. Currently, the industry is marked by: Monopolised control of every aspect of the fishing value-chain: from production to processing to marketing to distribution; Highly restricted access to the resource by historically disadvantaged members of our society; and Disempowered communities who originally had unrestricted access to marine resources. The above conditions have been created by a process of systematically violating the human rights of fishers and fishing communities. A new White Paper on Fisheries has the potential to change this in a sustainable economic and environmental way. Unfortunately, the 1997 White Paper on Fisheries does not adequately address the legacy of history. In fact, there are more similarities in this Paper to the 1988 Sea Fisheries Act than there is to any framework of transformation. One such framework was put forward by the Fishing Policy Development Committee (FPDC). However, it seems that key aspects of the FPDC’s recommendations were ignored. This is unacceptable.
- Full Text:
- Authors: FAWU
- Date: 1997
- Subjects: FAWU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/118385 , vital:34625
- Description: This document has been written to inform Deputy President Thabo Mbeki of FAWU’s objections to the above-mentioned White Paper. It also includes FAWU’s recommendations for changing the policy. The fishing industry in South Africa is an Apartheid creation. Like other aspects of our society, it needs to be completely transformed and restructured. Currently, the industry is marked by: Monopolised control of every aspect of the fishing value-chain: from production to processing to marketing to distribution; Highly restricted access to the resource by historically disadvantaged members of our society; and Disempowered communities who originally had unrestricted access to marine resources. The above conditions have been created by a process of systematically violating the human rights of fishers and fishing communities. A new White Paper on Fisheries has the potential to change this in a sustainable economic and environmental way. Unfortunately, the 1997 White Paper on Fisheries does not adequately address the legacy of history. In fact, there are more similarities in this Paper to the 1988 Sea Fisheries Act than there is to any framework of transformation. One such framework was put forward by the Fishing Policy Development Committee (FPDC). However, it seems that key aspects of the FPDC’s recommendations were ignored. This is unacceptable.
- Full Text:
First-row transition metal phthalocyanines as catalysts for water electrolysis
- Chebotareva, Natalia, Nyokong, Tebello
- Authors: Chebotareva, Natalia , Nyokong, Tebello
- Date: 1997
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/293391 , vital:57081 , xlink:href="https://doi.org/10.1016/S0013-4686(97)00033-9"
- Description: Modification of carbon electrodes with first row transition metal phthalocyanines results in the lowering of the potentials needed for water electrolysis in basic media, by 600 to 700 mV when compared to unmodified carbon electrodes. Nickel(II), cobalt(II) and iron(II) phthalocyanines show higher catalytic activity than zinc(II), manganese(II), copper(II) and metal free phthalocyanines.
- Full Text:
- Authors: Chebotareva, Natalia , Nyokong, Tebello
- Date: 1997
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/293391 , vital:57081 , xlink:href="https://doi.org/10.1016/S0013-4686(97)00033-9"
- Description: Modification of carbon electrodes with first row transition metal phthalocyanines results in the lowering of the potentials needed for water electrolysis in basic media, by 600 to 700 mV when compared to unmodified carbon electrodes. Nickel(II), cobalt(II) and iron(II) phthalocyanines show higher catalytic activity than zinc(II), manganese(II), copper(II) and metal free phthalocyanines.
- Full Text:
Glandular trichomes on the exotic Solanum sisymbriifolium Lamarck (Solanaceae): effective deterrents against an indigenous South African herbivore
- Hill, Martin P, Hulley, Patrick E, Allsopp, J, van Harmelen, G
- Authors: Hill, Martin P , Hulley, Patrick E , Allsopp, J , van Harmelen, G
- Date: 1997
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/451413 , vital:75047 , https://hdl.handle.net/10520/AJA10213589_152
- Description: An examination of the leaves of several native and exotic Solanum species revealed that they all possessed glandular and non-glandular trichomes. The density of glandular trichomes was, however, very much lower on the leaves of the indigenous species than on the leaves of a weed species, Solanum sisymbriifolium Lamarck, and two other South American Solanum species. This difference could have contributed to the depauperate faunas supported by the exotic species. The morphology and behaviour of an indigenous Solanum-feeding tortoise beetle, Conchyloctenia tigrina Oliver (Coleoptera: Chrysomelidae), and a South American tortoise beetle, Gratiana spadicea (IQug) (Coleoptera: Chrysomelidae), were compared. The study revealed that while the exudate produced by the glandular trichomes afforded S. sisymbriifolium a level of resistance to C. tigrina, it is probably only one of the factors limiting the recruitment of indigenous herbivores onto S. sisymbriifolium.
- Full Text:
- Authors: Hill, Martin P , Hulley, Patrick E , Allsopp, J , van Harmelen, G
- Date: 1997
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/451413 , vital:75047 , https://hdl.handle.net/10520/AJA10213589_152
- Description: An examination of the leaves of several native and exotic Solanum species revealed that they all possessed glandular and non-glandular trichomes. The density of glandular trichomes was, however, very much lower on the leaves of the indigenous species than on the leaves of a weed species, Solanum sisymbriifolium Lamarck, and two other South American Solanum species. This difference could have contributed to the depauperate faunas supported by the exotic species. The morphology and behaviour of an indigenous Solanum-feeding tortoise beetle, Conchyloctenia tigrina Oliver (Coleoptera: Chrysomelidae), and a South American tortoise beetle, Gratiana spadicea (IQug) (Coleoptera: Chrysomelidae), were compared. The study revealed that while the exudate produced by the glandular trichomes afforded S. sisymbriifolium a level of resistance to C. tigrina, it is probably only one of the factors limiting the recruitment of indigenous herbivores onto S. sisymbriifolium.
- Full Text:
Globlisation, structural adjustmentand education
- SADTU
- Authors: SADTU
- Date: 1997
- Subjects: SADTU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/178613 , vital:42960
- Description: Globalisation of finance: restructuring of capital such as global financial speculation, mergers + closures). Globalisation of production: restructuring of work (changing processes and location of production), restructuring of labour markets (structural unemployment, rise in part-time and casual workers and homeworkers). Globalisation of culture: dominance of ‘American lifestyles’. Globalisation of the state (government): restructuring of the state (state following rather than compensating for ‘free-market logic’, restrictions on trade union freedoms and political rights, shifts away from national control over resources and policies to international structures such as WTO, IMF, World Bank).
- Full Text:
- Authors: SADTU
- Date: 1997
- Subjects: SADTU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/178613 , vital:42960
- Description: Globalisation of finance: restructuring of capital such as global financial speculation, mergers + closures). Globalisation of production: restructuring of work (changing processes and location of production), restructuring of labour markets (structural unemployment, rise in part-time and casual workers and homeworkers). Globalisation of culture: dominance of ‘American lifestyles’. Globalisation of the state (government): restructuring of the state (state following rather than compensating for ‘free-market logic’, restrictions on trade union freedoms and political rights, shifts away from national control over resources and policies to international structures such as WTO, IMF, World Bank).
- Full Text:
Iinjongo ze Self-Employed Womens Union
- SEWU
- Authors: SEWU
- Date: 1997
- Subjects: SEWU
- Language: English,Xhosa,Afrikaans, Zulu
- Type: text
- Identifier: http://hdl.handle.net/10962/154981 , vital:39813
- Description: ISEWU yimanyano yamakhosikazi azisebenzelayo ngokwawo abangenawo umsebenzi osisigxina. Ungazimanyaxa uyinkosikazi eziphilelayo ngoluhlobo lulandelayo: Xa uzisebenzela ngokwakho ungaqashanga bantu bangaphezu kwesithathu; Xa usebenzela abantu bengakuqashanga isigxina; Xa usenza umsebenzi ongekho phantsi kwayo nayiphi imanyano; Xa usebenza umsebenzi wethutyana (casual). Imali yokuzimanya ne SEWU yi Rl 0.00, umrhumo wenyanga yi R5.00 emva kokuba ujoyinile. Uyakuthi ufumane ikhadi lobulungu elizakuthi libonise imirhumo yakho, kunye ne risiti njalo xa ubhatala. ISEWU inazo nee ofisi zokucebisa (Advice Offices) amakhosikazi asebenzayo angekho phantsi kwayo nayiphi imanyano. Wamkelekile uze kuboniswane / ngengxaki yakho sibone indlela esinokuyisombulula ngayo.
- Full Text:
- Authors: SEWU
- Date: 1997
- Subjects: SEWU
- Language: English,Xhosa,Afrikaans, Zulu
- Type: text
- Identifier: http://hdl.handle.net/10962/154981 , vital:39813
- Description: ISEWU yimanyano yamakhosikazi azisebenzelayo ngokwawo abangenawo umsebenzi osisigxina. Ungazimanyaxa uyinkosikazi eziphilelayo ngoluhlobo lulandelayo: Xa uzisebenzela ngokwakho ungaqashanga bantu bangaphezu kwesithathu; Xa usebenzela abantu bengakuqashanga isigxina; Xa usenza umsebenzi ongekho phantsi kwayo nayiphi imanyano; Xa usebenza umsebenzi wethutyana (casual). Imali yokuzimanya ne SEWU yi Rl 0.00, umrhumo wenyanga yi R5.00 emva kokuba ujoyinile. Uyakuthi ufumane ikhadi lobulungu elizakuthi libonise imirhumo yakho, kunye ne risiti njalo xa ubhatala. ISEWU inazo nee ofisi zokucebisa (Advice Offices) amakhosikazi asebenzayo angekho phantsi kwayo nayiphi imanyano. Wamkelekile uze kuboniswane / ngengxaki yakho sibone indlela esinokuyisombulula ngayo.
- Full Text:
Management education and training
- Authors: Amos, Trevor L , Quinn, Lynn
- Date: 1997
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/270902 , vital:54490 , xlink:href="https://hdl.handle.net/10520/AJA10113487_559"
- Description: The paper outlines the role of language in leaming and cognitive development and argues that management education and training needs to be integrated with language development to enable students to cope with the demands made of them at university as well as with those of careers in the business world. An integrated language developmEint project developed by the Depanment of Management and academic language practitioners at Rhodes Uhlvetsity is descriptionbed and suggestions are outlined as to how university Management departments can integrate language development in their mainstream teaching.
- Full Text:
- Authors: Amos, Trevor L , Quinn, Lynn
- Date: 1997
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/270902 , vital:54490 , xlink:href="https://hdl.handle.net/10520/AJA10113487_559"
- Description: The paper outlines the role of language in leaming and cognitive development and argues that management education and training needs to be integrated with language development to enable students to cope with the demands made of them at university as well as with those of careers in the business world. An integrated language developmEint project developed by the Depanment of Management and academic language practitioners at Rhodes Uhlvetsity is descriptionbed and suggestions are outlined as to how university Management departments can integrate language development in their mainstream teaching.
- Full Text:
Metallophthalocyanine catalysed electroreduction of nitrate and nitrite ions in alkaline media
- Chebotareva, Natalia, Nyokong, Tebello
- Authors: Chebotareva, Natalia , Nyokong, Tebello
- Date: 1997
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/293301 , vital:57073 , xlink:href="https://doi.org/10.1023/A:1018466021838"
- Description: Copper, cadmium, lead and bismuth (> 5 μg ml−1) are determined by adsorptive cathodic stripping voltammetry (AdCSV) on a mercury film glassy carbon electrode, using catechol, 4-methylcatechol, 4-t-butylcatechol and resorcinol as complexing ligands. Complexes of lead, copper and bismuth with resorcinol showed the largest increase in current with increase in metal concentration, whereas complexes of these metals with 4-t-butylcatechol showed the lowest current response. Cadmium showed a different behaviour from the other three metals in that the highest current response was observed with 4-methylcatechol. The four metals could be determined simultaneously in the presence of resorcinol, although considerable interference was observed between bismuth and copper.
- Full Text: false
- Authors: Chebotareva, Natalia , Nyokong, Tebello
- Date: 1997
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/293301 , vital:57073 , xlink:href="https://doi.org/10.1023/A:1018466021838"
- Description: Copper, cadmium, lead and bismuth (> 5 μg ml−1) are determined by adsorptive cathodic stripping voltammetry (AdCSV) on a mercury film glassy carbon electrode, using catechol, 4-methylcatechol, 4-t-butylcatechol and resorcinol as complexing ligands. Complexes of lead, copper and bismuth with resorcinol showed the largest increase in current with increase in metal concentration, whereas complexes of these metals with 4-t-butylcatechol showed the lowest current response. Cadmium showed a different behaviour from the other three metals in that the highest current response was observed with 4-methylcatechol. The four metals could be determined simultaneously in the presence of resorcinol, although considerable interference was observed between bismuth and copper.
- Full Text: false