Why old maids stay sweet
- Authors: Compton, Stephen G
- Date: 2004
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/452095 , vital:75103 , https://hdl.handle.net/10520/EJC32590
- Description: The usual function of floral nectaries in plants is to attract and reward pollinators, while extra-floral (foliar) nectaries function in the defence of the plant, attracting ants and other insects that can act as bodyguards (Beattie 1985). In a few plants these functions have been reversed, with floral nectar used to attract bodyguards (Dominguez et al. 1989) or foliar nectar used to attract pollinators, Poinsettias, Euphorbia pulcherimma L. are a well-known example (Thorp and Sugden 1990).
- Full Text:
- Date Issued: 2004
- Authors: Compton, Stephen G
- Date: 2004
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/452095 , vital:75103 , https://hdl.handle.net/10520/EJC32590
- Description: The usual function of floral nectaries in plants is to attract and reward pollinators, while extra-floral (foliar) nectaries function in the defence of the plant, attracting ants and other insects that can act as bodyguards (Beattie 1985). In a few plants these functions have been reversed, with floral nectar used to attract bodyguards (Dominguez et al. 1989) or foliar nectar used to attract pollinators, Poinsettias, Euphorbia pulcherimma L. are a well-known example (Thorp and Sugden 1990).
- Full Text:
- Date Issued: 2004
Women and Water: How is Gender Policy Working on the Ground The Water Wheel
- Authors: Berold, Robert
- Date: 2004
- Subjects: To be catalogued
- Language: English
- Type: text , report
- Identifier: http://hdl.handle.net/10962/437684 , vital:73402 , ISBN report , https://wrcwebsite.azurewebsites.net/wp-content/uploads/mdocs/WW_04_mar-apr_WiW.pdf
- Description: The gender policy of the Department of Water Affairs and Forestry (DWAF), formu-lated in 1997, was designed to promote gender equality both within DWAF itself and in its activities at community level. The policy required a quota of at least 30% (since increased to 50%) of women in all decision-making committees as well as adequate participation and technical training. How does the policy work out in the rural areas, far away from DWAF head office in Pretoria? The Water Research Commission (WRC) conducted a research study in the Peddie area to find out. Fort Hare lecturer Priscilla Monyai looked at four villages close to the town of Peddie in the densely populated former Ciskei, between Grahamstown and King Williams Town. About 4 000 people live in the villages of Cisira, Ncala, Nqwenerana and Mgwangqa. All get their water from the Peddie water supply scheme which began supplying clean drinking water in 1999.
- Full Text:
- Date Issued: 2004
- Authors: Berold, Robert
- Date: 2004
- Subjects: To be catalogued
- Language: English
- Type: text , report
- Identifier: http://hdl.handle.net/10962/437684 , vital:73402 , ISBN report , https://wrcwebsite.azurewebsites.net/wp-content/uploads/mdocs/WW_04_mar-apr_WiW.pdf
- Description: The gender policy of the Department of Water Affairs and Forestry (DWAF), formu-lated in 1997, was designed to promote gender equality both within DWAF itself and in its activities at community level. The policy required a quota of at least 30% (since increased to 50%) of women in all decision-making committees as well as adequate participation and technical training. How does the policy work out in the rural areas, far away from DWAF head office in Pretoria? The Water Research Commission (WRC) conducted a research study in the Peddie area to find out. Fort Hare lecturer Priscilla Monyai looked at four villages close to the town of Peddie in the densely populated former Ciskei, between Grahamstown and King Williams Town. About 4 000 people live in the villages of Cisira, Ncala, Nqwenerana and Mgwangqa. All get their water from the Peddie water supply scheme which began supplying clean drinking water in 1999.
- Full Text:
- Date Issued: 2004
World view theory and the conceptualisation of space in mathematics education:
- Authors: Schäfer, Marc
- Date: 2004
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/141052 , vital:37940 , DOI: 10.4102/pythagoras.v0i59.127
- Description: The cornerstone of current education trends that recognise prior knowledge as fundamental to the learning process, is the notion that beliefs and experiences that learners bring to the classroom influence their learning experiences in the classroom (Cobern, Gibson and Underwood, 1999).
- Full Text:
- Date Issued: 2004
- Authors: Schäfer, Marc
- Date: 2004
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/141052 , vital:37940 , DOI: 10.4102/pythagoras.v0i59.127
- Description: The cornerstone of current education trends that recognise prior knowledge as fundamental to the learning process, is the notion that beliefs and experiences that learners bring to the classroom influence their learning experiences in the classroom (Cobern, Gibson and Underwood, 1999).
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- Date Issued: 2004
Zinc phthalocyanine photocatalyzed oxidation of cyclohexene
- Sehlotho, Nthapo, Nyokong, Tebello
- Authors: Sehlotho, Nthapo , Nyokong, Tebello
- Date: 2004
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/289399 , vital:56629 , xlink:href="https://doi.org/10.1016/j.molcata.2004.05.010"
- Description: Cyclohexene photooxidation catalyzed by zinc phthalocyanine (ZnPc) using either red or white light results in the formation of cyclohexenone, cyclohexenol, trans-cyclohexanediol, cyclohexene oxide and cyclohexene hydroperoxide. The product yield increased as follows: cyclohexenone > cyclohexenol > trans-cyclohexanediol > cyclohexene oxide > cyclohexene hydroperoxide. The mechanism for the formation of these products involves both singlet oxygen and radicals (Type II and Type I mechanisms, respectively). The catalyst degraded slowly when low light intensities were employed. The product yields were found to depend on the light intensity, the nature of solvent, irradiation time and the rate of photodegradation of the catalyst.
- Full Text:
- Date Issued: 2004
- Authors: Sehlotho, Nthapo , Nyokong, Tebello
- Date: 2004
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/289399 , vital:56629 , xlink:href="https://doi.org/10.1016/j.molcata.2004.05.010"
- Description: Cyclohexene photooxidation catalyzed by zinc phthalocyanine (ZnPc) using either red or white light results in the formation of cyclohexenone, cyclohexenol, trans-cyclohexanediol, cyclohexene oxide and cyclohexene hydroperoxide. The product yield increased as follows: cyclohexenone > cyclohexenol > trans-cyclohexanediol > cyclohexene oxide > cyclohexene hydroperoxide. The mechanism for the formation of these products involves both singlet oxygen and radicals (Type II and Type I mechanisms, respectively). The catalyst degraded slowly when low light intensities were employed. The product yields were found to depend on the light intensity, the nature of solvent, irradiation time and the rate of photodegradation of the catalyst.
- Full Text:
- Date Issued: 2004
‘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
- Authors: Andrew
- Identifier: http://hdl.handle.net/10962/343282 , vital:62991
- Description: Classical piano unaccompanied
- Full Text: false
- Date Issued: 2004
The V-C's Awards
- Language: English
- Type: Article
- Identifier: vital:7170 , http://hdl.handle.net/10962/d1006074
- Description: Prof Tebello Nyokong, from the Department of Chemistry, receives the V-C' s Senior Distinguished Research Award in 2003 and 2004
- Full Text:
- Language: English
- Type: Article
- Identifier: vital:7170 , http://hdl.handle.net/10962/d1006074
- Description: Prof Tebello Nyokong, from the Department of Chemistry, receives the V-C' s Senior Distinguished Research Award in 2003 and 2004
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Vice-Chancellor's Annual Review 2004
- Language: English
- Type: Article
- Identifier: vital:7169 , http://hdl.handle.net/10962/d1006071
- Description: The highlight of 2004 was the award of both the Vice-Chancellor's Senior Research Award and the SABC2 Shoprite-Checkers Woman of the Year Award (Science and Technology) to Professor Tebello Nyokong, whose research on the development of photosensitisers for photodynamic cancer therapy has received considerable attention.
- Full Text:
- Language: English
- Type: Article
- Identifier: vital:7169 , http://hdl.handle.net/10962/d1006071
- Description: The highlight of 2004 was the award of both the Vice-Chancellor's Senior Research Award and the SABC2 Shoprite-Checkers Woman of the Year Award (Science and Technology) to Professor Tebello Nyokong, whose research on the development of photosensitisers for photodynamic cancer therapy has received considerable attention.
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Western Alumna inspiring catalyst
- University of Western Ontario
- Authors: University of Western Ontario
- Subjects: Nyokong, Tebello
- Language: English
- Type: Article
- Identifier: vital:7172 , http://hdl.handle.net/10962/d1006078 , Nyokong, Tebello
- Description: University of Western Ontario President's Report 2004
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- Authors: University of Western Ontario
- Subjects: Nyokong, Tebello
- Language: English
- Type: Article
- Identifier: vital:7172 , http://hdl.handle.net/10962/d1006078 , Nyokong, Tebello
- Description: University of Western Ontario President's Report 2004
- Full Text: