Jazz musician
- Authors: Arnott, Bruce
- Date: 2012-09-20
- Subjects: McGregor, Chris -- 1936-1990 , Jazz , Jazz musician
- Language: English
- Type: Article
- Identifier: vital:13475 , http://hdl.handle.net/10962/d1001397 , McGregor, Chris -- 1936-1990 , Jazz , Jazz musician
- Description: Photocopied tribute from Bruce Arnott to Chris McGregor. There is also a drawing of Chris McGregor as seen by Bruce Arnott.
- Full Text:
- Authors: Arnott, Bruce
- Date: 2012-09-20
- Subjects: McGregor, Chris -- 1936-1990 , Jazz , Jazz musician
- Language: English
- Type: Article
- Identifier: vital:13475 , http://hdl.handle.net/10962/d1001397 , McGregor, Chris -- 1936-1990 , Jazz , Jazz musician
- Description: Photocopied tribute from Bruce Arnott to Chris McGregor. There is also a drawing of Chris McGregor as seen by Bruce Arnott.
- Full Text:
Letter from Jack Lang to Chris McGregor's family
- Authors: Lang, Jack
- Date: 2012-09-20
- Subjects: McGregor, Chris--1936-1990 , Jazz , Jazz musicians
- Language: French
- Identifier: vital:13482 , http://hdl.handle.net/10962/d1002618 , McGregor, Chris--1936-1990 , Jazz , Jazz musicians
- Description: Photocopied letter from Jack Lang, ex-French Minister of Art and Culture, to Chris McGregor's family.
- Full Text:
- Authors: Lang, Jack
- Date: 2012-09-20
- Subjects: McGregor, Chris--1936-1990 , Jazz , Jazz musicians
- Language: French
- Identifier: vital:13482 , http://hdl.handle.net/10962/d1002618 , McGregor, Chris--1936-1990 , Jazz , Jazz musicians
- Description: Photocopied letter from Jack Lang, ex-French Minister of Art and Culture, to Chris McGregor's family.
- Full Text:
McGregor: I tried to forget South Africa
- Aimé, Bernard, Loll, Jacques
- Authors: Aimé, Bernard , Loll, Jacques
- Date: 2012-09-20 , 1989
- Subjects: Jazz , Mndebele, Sonti , Jazz musicians , Brotherhood of Breath (Musical group) , Blue Notes (Musical group : South Africa) , Shepp, Archie , Mothle, Ernest , McGregor, Chris -- 1936-1990 , Matthews, Gilbert
- Language: French
- Type: Article
- Identifier: vital:13465 , http://hdl.handle.net/10962/d1001375 , Jazz , Mndebele, Sonti , Jazz musicians , Brotherhood of Breath (Musical group) , Blue Notes (Musical group : South Africa) , Shepp, Archie , Mothle, Ernest , McGregor, Chris -- 1936-1990 , Matthews, Gilbert
- Description: Photocopied interview from the French Jazz Magazine of Chris McGregor about the evolution of his music and the music in South Africa. This article has been written when Archie Shepp joined the Brotherhood of Breath. On the first page, the top picture shows Chris McGregor at the time of the interview playing Piano, and the bottom picture shows him with the Big Band Blue Notes during the '60s. There are also 2 pictures on the second page. The left one shows Chris McGregor at the Piano, the singer Sonti Mndebele and the saxophonist Archie Shepp. The picture on the right represents Chris McGregor and Archie Shepp.
- Full Text:
- Date Issued: 1989
- Authors: Aimé, Bernard , Loll, Jacques
- Date: 2012-09-20 , 1989
- Subjects: Jazz , Mndebele, Sonti , Jazz musicians , Brotherhood of Breath (Musical group) , Blue Notes (Musical group : South Africa) , Shepp, Archie , Mothle, Ernest , McGregor, Chris -- 1936-1990 , Matthews, Gilbert
- Language: French
- Type: Article
- Identifier: vital:13465 , http://hdl.handle.net/10962/d1001375 , Jazz , Mndebele, Sonti , Jazz musicians , Brotherhood of Breath (Musical group) , Blue Notes (Musical group : South Africa) , Shepp, Archie , Mothle, Ernest , McGregor, Chris -- 1936-1990 , Matthews, Gilbert
- Description: Photocopied interview from the French Jazz Magazine of Chris McGregor about the evolution of his music and the music in South Africa. This article has been written when Archie Shepp joined the Brotherhood of Breath. On the first page, the top picture shows Chris McGregor at the time of the interview playing Piano, and the bottom picture shows him with the Big Band Blue Notes during the '60s. There are also 2 pictures on the second page. The left one shows Chris McGregor at the Piano, the singer Sonti Mndebele and the saxophonist Archie Shepp. The picture on the right represents Chris McGregor and Archie Shepp.
- Full Text:
- Date Issued: 1989
Requiem for SA Jazzman
- Authors: Albert, Don
- Date: 2012-09-20 , 1990
- Subjects: Jazz musicians , McGregor, Chris -- 1936-1990 , Jazz , Blue Notes (Musical group : South Africa) , Brotherhood of Breath (Musical group)
- Language: English
- Type: Article
- Identifier: vital:13470 , http://hdl.handle.net/10962/d1001392 , Jazz musicians , McGregor, Chris -- 1936-1990 , Jazz , Blue Notes (Musical group : South Africa) , Brotherhood of Breath (Musical group)
- Description: Photocopied obituary of Chris McGregor from the newspaper The Star
- Full Text:
- Date Issued: 1990
- Authors: Albert, Don
- Date: 2012-09-20 , 1990
- Subjects: Jazz musicians , McGregor, Chris -- 1936-1990 , Jazz , Blue Notes (Musical group : South Africa) , Brotherhood of Breath (Musical group)
- Language: English
- Type: Article
- Identifier: vital:13470 , http://hdl.handle.net/10962/d1001392 , Jazz musicians , McGregor, Chris -- 1936-1990 , Jazz , Blue Notes (Musical group : South Africa) , Brotherhood of Breath (Musical group)
- Description: Photocopied obituary of Chris McGregor from the newspaper The Star
- Full Text:
- Date Issued: 1990
Journalism in a new democracy : the ethics of listening.
- Authors: Wasserman, Herman
- Date: 2012-09-19
- Language: English
- Type: Text
- Identifier: vital:577 , http://hdl.handle.net/10962/d1008551
- Description: [Conclusion] I started this lecture by recalling how, as a youngster, it was stories that helped me to understand the country I was growing up in, and helped me imagine the lives of others that I did not read about in the media of that time. For journalism in a new democracy such as South Africa to serve more than an elite, for it to enable citizens to actively practice their citizenship through media, for it to treat all South Africans with dignity, it would have to learn to listen across the different lines that continue to keep South Africans apart – journalists would have to learn to listen to the stories of those on the other side of the railway line, the breadline, the picket line, the barbed wire fence. What would this listening mean for journalists in practice? Let me end by returning to the coverage of the Marikana massacre. In a recent interview with Greg Marinovich, the journalist that did the investigation that cast doubt on the official accounts of the events, he was asked if what was needed for better journalism was more investment of resources. ‘Do we need a team (or teams) of journalists to get to the bottom of this?’ he was asked. Marinovich responded as follows: “I wouldn't say that. I think other journalists have been spending more time there than I have (…) It's about opening your eyes and looking at what people are telling you, looking at their stories.”
- Full Text:
- Date Issued: 2012-09-19
- Authors: Wasserman, Herman
- Date: 2012-09-19
- Language: English
- Type: Text
- Identifier: vital:577 , http://hdl.handle.net/10962/d1008551
- Description: [Conclusion] I started this lecture by recalling how, as a youngster, it was stories that helped me to understand the country I was growing up in, and helped me imagine the lives of others that I did not read about in the media of that time. For journalism in a new democracy such as South Africa to serve more than an elite, for it to enable citizens to actively practice their citizenship through media, for it to treat all South Africans with dignity, it would have to learn to listen across the different lines that continue to keep South Africans apart – journalists would have to learn to listen to the stories of those on the other side of the railway line, the breadline, the picket line, the barbed wire fence. What would this listening mean for journalists in practice? Let me end by returning to the coverage of the Marikana massacre. In a recent interview with Greg Marinovich, the journalist that did the investigation that cast doubt on the official accounts of the events, he was asked if what was needed for better journalism was more investment of resources. ‘Do we need a team (or teams) of journalists to get to the bottom of this?’ he was asked. Marinovich responded as follows: “I wouldn't say that. I think other journalists have been spending more time there than I have (…) It's about opening your eyes and looking at what people are telling you, looking at their stories.”
- Full Text:
- Date Issued: 2012-09-19
Chris McGregor with musicians on stage at the Open OHR Festival.
- Date: 2012-09-04
- Subjects: McGregor, Chris--1936-1990 , Jazz , Jazz musicians , Open OHR Festival
- Type: Image
- Identifier: vital:13846 , http://hdl.handle.net/10962/d1001677 , McGregor, Chris--1936-1990 , Jazz , Jazz musicians
- Description: Colour photo of Chris McGregor with 4 musicians on stage at the Open OHR Festival in Mainz (Germany) in 1986. From left to right: Chris McGregor playing keyboards, 2 percussionists, an unidentified person (probably a stage manager) and an electric guitarist.
- Full Text: false
- Date: 2012-09-04
- Subjects: McGregor, Chris--1936-1990 , Jazz , Jazz musicians , Open OHR Festival
- Type: Image
- Identifier: vital:13846 , http://hdl.handle.net/10962/d1001677 , McGregor, Chris--1936-1990 , Jazz , Jazz musicians
- Description: Colour photo of Chris McGregor with 4 musicians on stage at the Open OHR Festival in Mainz (Germany) in 1986. From left to right: Chris McGregor playing keyboards, 2 percussionists, an unidentified person (probably a stage manager) and an electric guitarist.
- Full Text: false
Chris McGregor, Harry Beckett and Lucky Ranku with a fourth man outside a bus.
- Date: 2012-09-04
- Subjects: McGregor, Chris--1936-1990 , Beckett, Harry , Ranku, Lucky , Jazz , Jazz musicians
- Type: Image
- Identifier: vital:13854 , http://hdl.handle.net/10962/d1001688 , McGregor, Chris--1936-1990 , Beckett, Harry , Ranku, Lucky , Jazz , Jazz musicians
- Description: Colour photo. From left to right: an unidentified man, Lucky Ranku, Harry Beckett and Chris McGregor standing outside a bus.
- Full Text: false
- Date: 2012-09-04
- Subjects: McGregor, Chris--1936-1990 , Beckett, Harry , Ranku, Lucky , Jazz , Jazz musicians
- Type: Image
- Identifier: vital:13854 , http://hdl.handle.net/10962/d1001688 , McGregor, Chris--1936-1990 , Beckett, Harry , Ranku, Lucky , Jazz , Jazz musicians
- Description: Colour photo. From left to right: an unidentified man, Lucky Ranku, Harry Beckett and Chris McGregor standing outside a bus.
- Full Text: false
Group photo with luggage outside
- Date: 2012-09-04
- Subjects: McGregor, Chris--1936-1990 , Jazz , Jazz musicians
- Type: Image
- Identifier: vital:13870 , http://hdl.handle.net/10962/d1001772 , McGregor, Chris--1936-1990 , Jazz , Jazz musicians
- Description: Colour photo of a group of 6 people with luggage and instruments outside. Four people are standing at the back row and two are sitting on the grass on the front row. There are 4 men and 2 women.
- Full Text: false
- Date: 2012-09-04
- Subjects: McGregor, Chris--1936-1990 , Jazz , Jazz musicians
- Type: Image
- Identifier: vital:13870 , http://hdl.handle.net/10962/d1001772 , McGregor, Chris--1936-1990 , Jazz , Jazz musicians
- Description: Colour photo of a group of 6 people with luggage and instruments outside. Four people are standing at the back row and two are sitting on the grass on the front row. There are 4 men and 2 women.
- Full Text: false
Harry Beckett and Lucky Ranku standing outside a bus.
- Date: 2012-09-04
- Subjects: McGregor, Chris--1936-1990 , Beckett, Harry , Ranku, Lucky , Jazz , Jazz musicians
- Type: Image
- Identifier: vital:13873 , http://hdl.handle.net/10962/d1001776 , McGregor, Chris--1936-1990 , Beckett, Harry , Ranku, Lucky , Jazz , Jazz musicians
- Description: Colour photo of Harry Beckett (centre) and Lucky Ranku (right)
- Full Text: false
- Date: 2012-09-04
- Subjects: McGregor, Chris--1936-1990 , Beckett, Harry , Ranku, Lucky , Jazz , Jazz musicians
- Type: Image
- Identifier: vital:13873 , http://hdl.handle.net/10962/d1001776 , McGregor, Chris--1936-1990 , Beckett, Harry , Ranku, Lucky , Jazz , Jazz musicians
- Description: Colour photo of Harry Beckett (centre) and Lucky Ranku (right)
- Full Text: false
Harry Beckett and two guitarists on stage
- Date: 2012-09-04
- Subjects: McGregor, Chris--1936-1990 , Beckett, Harry , Jazz , Jazz musicians
- Type: Image
- Identifier: vital:13875 , http://hdl.handle.net/10962/d1001778 , McGregor, Chris--1936-1990 , Beckett, Harry , Jazz , Jazz musicians
- Description: Colour photo of Harry Beckett playing the trumpet on stage.
- Full Text: false
- Date: 2012-09-04
- Subjects: McGregor, Chris--1936-1990 , Beckett, Harry , Jazz , Jazz musicians
- Type: Image
- Identifier: vital:13875 , http://hdl.handle.net/10962/d1001778 , McGregor, Chris--1936-1990 , Beckett, Harry , Jazz , Jazz musicians
- Description: Colour photo of Harry Beckett playing the trumpet on stage.
- Full Text: false
Gender and affirmative action in South Africa: A case study on women empowerment in the Department of Education in Mthatha district offices.: subtitle if needed. If no subtitle follow instructions in manual
- Authors: Mbatani, Mziwekaya Eric
- Date: 2012-09
- Language: English
- Type: Masters theses , text
- Identifier: http://hdl.handle.net/11260/3207 , vital:43188
- Description: Abstract The main objective of this study has been to investigate the implementation of the affirmative action on the basis of gender balancing in the Department of Education in Mthatha District offices. The affirmative action policy is the program that seeks to remedy the past discrimination ideologies like on the bases of race and gender. Gender discrimination seemed to be the worst kind of discrimination in the past. Even within the same race, there are gender biases as well as within the same classes, women are treated differently. Some women are experiencing the impact of racial discrimination and class discrimination which puts women secondary of their same racial or same class male counterpart. Some men are experiencing only racial discrimination alone while others are experiencing class discrimination. Women serve the most severe discrimination of them all in the entire country of South Africa. Affirmative action has been used as a tool to eradicate all forms of discrimination. Hence its implementation needs to be evaluated to determine its impact on the eradication of discrimination, more especially sex discrimination. Evaluation has been made possible with the help of affirmative action measures which stipulate most of the principles of the affirmative action directed especially to the employers the gender balancing in the workplace is done with the aim of empowering and advancing women as their right according to gender equality. Women are experiencing the worst kind of social injustice have ever been practiced round the globe. Every woman is experiencing gender discrimination. Even in the rich family women are treated secondary by their male counterpart throughout their history of their living. In actual fact the presence of women in these family units is to help men help the men to have boys who will takeover the patriarchal duties assigned to every men as socialize to think and behave as the head of the families. If the family does not have boys who will later changed to be men, that family previously does run the risk of loosing the rights every households have where there are men. These girls to overcome the barriers of not having men and loose the right mention above they will marry men who will protect the right of their family. Previously, the family that did not have male will run the risk also of being robbed of their land and accused of black magic and the girls being raped. Some of the things that used to happen in the past are happening right now. Although women are promised the full dignity they deserve but some of the worst things that often happen to them in the past are still happening presently owing to the lack of political will to change the patriarchal system which is undermining the full dignity women deserve. This is viewed by Marxist feminists as being caused by the economic mode of production presently operating ‘capitalism’. The Marxist feminist suggests that there shall be no social justice if capitalism is still in place. Therefore they suggested that the only thing to eradicate is to eradicate the present form of production. The liberal feminist claim that the cause of the situation women found themselves is the unequal distribution of resource between men and women. Therefore they advocated that there should be equal rights between men and women as well as equal distribution of resources to men and women. Women must be empowered politically so as to have the equal voice like men. They must emanicipate themselves from the bondages of patriarchal ideologies. Women are just biological different from men but have equal mental capabilities as that of men. The equals should be treated equal and the unequals should be treated unequal. The differences we have should not be made as bases for treating others as unequal. The resources in our societies should be distributed equal among the demographics we have in our societies. The population of the country matters in terms of the countries prestige in terms of economic power. The more the population the country has the more powerful the country will be. In actual fact, the more productive the population of the country is the more productive the country will be. However, the less the productive the population of the country is, the lesser the productivity the country will be. Hence women should also be empowered economically. , Thesis (MMED) -- Faculty of HUMANITIES, SOCIAL SCIENCES and LAW, 2012
- Full Text:
- Date Issued: 2012-09
- Authors: Mbatani, Mziwekaya Eric
- Date: 2012-09
- Language: English
- Type: Masters theses , text
- Identifier: http://hdl.handle.net/11260/3207 , vital:43188
- Description: Abstract The main objective of this study has been to investigate the implementation of the affirmative action on the basis of gender balancing in the Department of Education in Mthatha District offices. The affirmative action policy is the program that seeks to remedy the past discrimination ideologies like on the bases of race and gender. Gender discrimination seemed to be the worst kind of discrimination in the past. Even within the same race, there are gender biases as well as within the same classes, women are treated differently. Some women are experiencing the impact of racial discrimination and class discrimination which puts women secondary of their same racial or same class male counterpart. Some men are experiencing only racial discrimination alone while others are experiencing class discrimination. Women serve the most severe discrimination of them all in the entire country of South Africa. Affirmative action has been used as a tool to eradicate all forms of discrimination. Hence its implementation needs to be evaluated to determine its impact on the eradication of discrimination, more especially sex discrimination. Evaluation has been made possible with the help of affirmative action measures which stipulate most of the principles of the affirmative action directed especially to the employers the gender balancing in the workplace is done with the aim of empowering and advancing women as their right according to gender equality. Women are experiencing the worst kind of social injustice have ever been practiced round the globe. Every woman is experiencing gender discrimination. Even in the rich family women are treated secondary by their male counterpart throughout their history of their living. In actual fact the presence of women in these family units is to help men help the men to have boys who will takeover the patriarchal duties assigned to every men as socialize to think and behave as the head of the families. If the family does not have boys who will later changed to be men, that family previously does run the risk of loosing the rights every households have where there are men. These girls to overcome the barriers of not having men and loose the right mention above they will marry men who will protect the right of their family. Previously, the family that did not have male will run the risk also of being robbed of their land and accused of black magic and the girls being raped. Some of the things that used to happen in the past are happening right now. Although women are promised the full dignity they deserve but some of the worst things that often happen to them in the past are still happening presently owing to the lack of political will to change the patriarchal system which is undermining the full dignity women deserve. This is viewed by Marxist feminists as being caused by the economic mode of production presently operating ‘capitalism’. The Marxist feminist suggests that there shall be no social justice if capitalism is still in place. Therefore they suggested that the only thing to eradicate is to eradicate the present form of production. The liberal feminist claim that the cause of the situation women found themselves is the unequal distribution of resource between men and women. Therefore they advocated that there should be equal rights between men and women as well as equal distribution of resources to men and women. Women must be empowered politically so as to have the equal voice like men. They must emanicipate themselves from the bondages of patriarchal ideologies. Women are just biological different from men but have equal mental capabilities as that of men. The equals should be treated equal and the unequals should be treated unequal. The differences we have should not be made as bases for treating others as unequal. The resources in our societies should be distributed equal among the demographics we have in our societies. The population of the country matters in terms of the countries prestige in terms of economic power. The more the population the country has the more powerful the country will be. In actual fact, the more productive the population of the country is the more productive the country will be. However, the less the productive the population of the country is, the lesser the productivity the country will be. Hence women should also be empowered economically. , Thesis (MMED) -- Faculty of HUMANITIES, SOCIAL SCIENCES and LAW, 2012
- Full Text:
- Date Issued: 2012-09
Biological activities and mechanisms of action of two ethnobotanically selected South African medicinal plants on some bacteria associated with gastrointestinal infections
- Olajuyigbe, Olufunmiso Olusola https://orcid.org/0000-0002-7889-0416
- Authors: Olajuyigbe, Olufunmiso Olusola https://orcid.org/0000-0002-7889-0416
- Date: 2012-08
- Subjects: Medicinal plants , Herbs -- Therapeutic use , Gastrointestinal system
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/25439 , vital:64249
- Description: In this study, 36 plant species representing 24 families were found to be commonly used for the treatment of a variety of gastrointestinal disorders in Eastern Cape, South Africa. The family Fabaceae had the highest number of species. Out of these, 47.06percent were used in the treatment of dysentery alone while 46.15percent were used in the treatment of diarrhoea. Acacia mearnsii De Wild and Ziziphus mucronata subsp. mucronata Willd were selected for this research because they are extensively used in folkloric medicine in South Africa and there was lack of scientific reports that documented their biological activities. The phytochemical screening, antioxidant activities, in vitro antimicrobial activities, cytotoxicity, the synergistic potentials and mechanisms of actions of these plants were investigated. The phytochemical screening and the antioxidant activities of the two species showed that the quantity of the phenolic compounds, flavonoids and proanthocyanidins detected differ significantly in the various extracts. Of the aqueous, acetone, ethanolic and methanolic extracts of A. mearnsii, the ethanolic extract had the highest flavonoids while the acetone extract had the highest phenolic contents. The proanthocyanidins were highest in the methanol extract while aqueous extracts had the least phytochemicals. Aqueous extract showed the least ferric reducing power but methanol extract indicated the highest reducing power. The reducing power of the extracts was lower than those obtained from the reference standard such as butylated hydroxytoluene (BHT), rutin and ascorbic acid. 2,2’-azinobis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS) diammonium salt showed that ethanol extract exhibited the highest antioxidant activity at the highest concentration tested. Also, 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay indicated that ethanol extract had the highest radical scavenging activity at the lowest concentration and the activities of all the extracts decreased with increase in their concentrations. In Z. mucronata subsp. mucronata, the phenolics were significantly higher than the flavonoids and proanthocyanidin contents in all the extracts investigated. The ethanol extract had the highest antioxidant activity, followed by the acetone extract while the aqueous extract was the least active. Reacting with ABTS, the 50percent inhibitory concentrations (IC50) were (0.0429 ± 0.04 mg/ml) for aqueous, (0.0317 ± 0.04 mg/ml) for acetone and (0.0306 ± 0.04 mg/ml) for ethanol extracts while they inhibited DPPH radical with 50percent inhibitory concentration (IC50) values of 0.0646 ± 0.02 mg/ml (aqueous), 0.0482 ± 0.02 mg/ml (acetone) and 0.0422 ± 0.03 mg/ml (ethanol). The investigation showed that a positive linear correlation existed between the total phenolic content and antioxidant activity of the extracts and that these plants have strong antioxidant property and free radical scavenging capability. The in vitro antibacterial activities of Acacia mearnsii and Z. mucronata subsp. mucronata showed that their minimum inhibitory concentrations ranged between 0.039 mg/ml and 1.25 mg/ml. With the exception of acetone extract of A. mearnsii having MICs greater than 1.0 mg/ml for Enterococcus faecalis ATCC 29212 and Bacillus subtilis KZN, all other isolates had MICs less than 0.7 mg/ml. In all the bacteria treated with Z. mucronata subsp. mucronata extracts, Enterobacter cloacae ATCC 13047 had MIC greater than 1 mg/ml in methanol extract, Enterococcus faecalis ATCC 29212 and Staphylococcus aureus ATCC 6538 had MICs greater than 1 mg/ml in acetone extract while all other isolates were highly susceptible to the different extracts of Z. mucronata subsp. mucronata and had MICs less than 0.7 mg/ml. While aqueous extract was as active as the alcoholic extracts in A. mearnsii, that of Z. mucronata had no effect. The ethanol extracts exhibited the highest degree of antibacterial activity in both plants. This study, also, showed that the antifungal activity of A. mearnsii ranging 0.3125 – 5.0 mg/ml was higher than those of the different extracts of Z. mucronata subsp. mucronata ranging 1.25 – 10.0 mg/ml. It is evident from the results of the brine shrimp lethality assay that the crude extracts of A. mearnsii with the LC50 equaled 112.36 µg/ml and having the highest levels of toxicity (100percent) death at 500 μg/ml was non toxic (LC50 > 100 μg/ml) while the LC50 for Z. mucronata subsp. mucronata equaled 90.27 µg/ml indicated a low level of toxicity. The effects of combining the crude extracts of these plants with eight antibiotics were investigated by means of checkerboard and agar diffusion methods. On using the methanol extract of A. mearnsii, the agar diffusion assay showed that extract-kanamycin combination had zones of inhibition ≥ 20 ± 1.0 mm in all the bacteria tested (100percent), followed by extract chloramphenicol (90percent) > extract-ciprofloxacin = extract-tetracycline (70percent) > extract amoxicillin (60percent) > extract-nalidixic acid (50percent) > extract-erythromycin (40percent) > extract metronidazole (20percent). The checkerboard showed synergistic interaction (61.25percent), additivity/indifference (23.75percent) and antagonistic (15percent) effects. I, therefore, concluded that the antibacterial potentials of the antibiotics were improved and combining natural products with antibiotic could be a potential source of resistance-modifying agents useful against multi-drug resistant bacteria. The influences of these extracts on the ultrastructures, elemental components, protein and lipid leakages of five different bacteria were determined as the possible mechanisms of action of the extracts investigated. The scanning electron microscopy indicated varied ultrastructural changes in the morphology of bacterial cells treated with the extracts. The X-ray microanalysis showed significant differences between the elemental contents of extract-treated and untreated bacteria while lipids and proteins were leaked to a great extent from the extract-treated bacterial strains in comparison with the untreated ones. The possible mechanisms of action of the extracts may include inhibition of a significant step in peptidoglycan assembly, inhibition of metabolic processes, disruption of cell wall and cell membranes resulting in the efflux of lipid and protein in all the bacteria tested. The possible mechanism of action involved in the lipid and protein leakages in the bacterial cells could be attributed to lipid peroxidation and protein oxidation owing to the antioxidant activities of the extracts that were active beyond the protective levels. I concluded that the morphological changes and the observed leakages showed rapid killing, significant membrane depolarization resulting in leakages and efflux of disintegrated cellular materials. In general, this study has justified the ethnotherapeutic importance of A. mearnsii and Z. mucronata subsp. mucronata in the treatment of microbial infections by indicating the possible mechanisms of action of the crude extracts on the tested bacteria. , Thesis (PhD) -- Faculty of Science and Agriculture, 2012
- Full Text:
- Date Issued: 2012-08
- Authors: Olajuyigbe, Olufunmiso Olusola https://orcid.org/0000-0002-7889-0416
- Date: 2012-08
- Subjects: Medicinal plants , Herbs -- Therapeutic use , Gastrointestinal system
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/25439 , vital:64249
- Description: In this study, 36 plant species representing 24 families were found to be commonly used for the treatment of a variety of gastrointestinal disorders in Eastern Cape, South Africa. The family Fabaceae had the highest number of species. Out of these, 47.06percent were used in the treatment of dysentery alone while 46.15percent were used in the treatment of diarrhoea. Acacia mearnsii De Wild and Ziziphus mucronata subsp. mucronata Willd were selected for this research because they are extensively used in folkloric medicine in South Africa and there was lack of scientific reports that documented their biological activities. The phytochemical screening, antioxidant activities, in vitro antimicrobial activities, cytotoxicity, the synergistic potentials and mechanisms of actions of these plants were investigated. The phytochemical screening and the antioxidant activities of the two species showed that the quantity of the phenolic compounds, flavonoids and proanthocyanidins detected differ significantly in the various extracts. Of the aqueous, acetone, ethanolic and methanolic extracts of A. mearnsii, the ethanolic extract had the highest flavonoids while the acetone extract had the highest phenolic contents. The proanthocyanidins were highest in the methanol extract while aqueous extracts had the least phytochemicals. Aqueous extract showed the least ferric reducing power but methanol extract indicated the highest reducing power. The reducing power of the extracts was lower than those obtained from the reference standard such as butylated hydroxytoluene (BHT), rutin and ascorbic acid. 2,2’-azinobis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS) diammonium salt showed that ethanol extract exhibited the highest antioxidant activity at the highest concentration tested. Also, 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay indicated that ethanol extract had the highest radical scavenging activity at the lowest concentration and the activities of all the extracts decreased with increase in their concentrations. In Z. mucronata subsp. mucronata, the phenolics were significantly higher than the flavonoids and proanthocyanidin contents in all the extracts investigated. The ethanol extract had the highest antioxidant activity, followed by the acetone extract while the aqueous extract was the least active. Reacting with ABTS, the 50percent inhibitory concentrations (IC50) were (0.0429 ± 0.04 mg/ml) for aqueous, (0.0317 ± 0.04 mg/ml) for acetone and (0.0306 ± 0.04 mg/ml) for ethanol extracts while they inhibited DPPH radical with 50percent inhibitory concentration (IC50) values of 0.0646 ± 0.02 mg/ml (aqueous), 0.0482 ± 0.02 mg/ml (acetone) and 0.0422 ± 0.03 mg/ml (ethanol). The investigation showed that a positive linear correlation existed between the total phenolic content and antioxidant activity of the extracts and that these plants have strong antioxidant property and free radical scavenging capability. The in vitro antibacterial activities of Acacia mearnsii and Z. mucronata subsp. mucronata showed that their minimum inhibitory concentrations ranged between 0.039 mg/ml and 1.25 mg/ml. With the exception of acetone extract of A. mearnsii having MICs greater than 1.0 mg/ml for Enterococcus faecalis ATCC 29212 and Bacillus subtilis KZN, all other isolates had MICs less than 0.7 mg/ml. In all the bacteria treated with Z. mucronata subsp. mucronata extracts, Enterobacter cloacae ATCC 13047 had MIC greater than 1 mg/ml in methanol extract, Enterococcus faecalis ATCC 29212 and Staphylococcus aureus ATCC 6538 had MICs greater than 1 mg/ml in acetone extract while all other isolates were highly susceptible to the different extracts of Z. mucronata subsp. mucronata and had MICs less than 0.7 mg/ml. While aqueous extract was as active as the alcoholic extracts in A. mearnsii, that of Z. mucronata had no effect. The ethanol extracts exhibited the highest degree of antibacterial activity in both plants. This study, also, showed that the antifungal activity of A. mearnsii ranging 0.3125 – 5.0 mg/ml was higher than those of the different extracts of Z. mucronata subsp. mucronata ranging 1.25 – 10.0 mg/ml. It is evident from the results of the brine shrimp lethality assay that the crude extracts of A. mearnsii with the LC50 equaled 112.36 µg/ml and having the highest levels of toxicity (100percent) death at 500 μg/ml was non toxic (LC50 > 100 μg/ml) while the LC50 for Z. mucronata subsp. mucronata equaled 90.27 µg/ml indicated a low level of toxicity. The effects of combining the crude extracts of these plants with eight antibiotics were investigated by means of checkerboard and agar diffusion methods. On using the methanol extract of A. mearnsii, the agar diffusion assay showed that extract-kanamycin combination had zones of inhibition ≥ 20 ± 1.0 mm in all the bacteria tested (100percent), followed by extract chloramphenicol (90percent) > extract-ciprofloxacin = extract-tetracycline (70percent) > extract amoxicillin (60percent) > extract-nalidixic acid (50percent) > extract-erythromycin (40percent) > extract metronidazole (20percent). The checkerboard showed synergistic interaction (61.25percent), additivity/indifference (23.75percent) and antagonistic (15percent) effects. I, therefore, concluded that the antibacterial potentials of the antibiotics were improved and combining natural products with antibiotic could be a potential source of resistance-modifying agents useful against multi-drug resistant bacteria. The influences of these extracts on the ultrastructures, elemental components, protein and lipid leakages of five different bacteria were determined as the possible mechanisms of action of the extracts investigated. The scanning electron microscopy indicated varied ultrastructural changes in the morphology of bacterial cells treated with the extracts. The X-ray microanalysis showed significant differences between the elemental contents of extract-treated and untreated bacteria while lipids and proteins were leaked to a great extent from the extract-treated bacterial strains in comparison with the untreated ones. The possible mechanisms of action of the extracts may include inhibition of a significant step in peptidoglycan assembly, inhibition of metabolic processes, disruption of cell wall and cell membranes resulting in the efflux of lipid and protein in all the bacteria tested. The possible mechanism of action involved in the lipid and protein leakages in the bacterial cells could be attributed to lipid peroxidation and protein oxidation owing to the antioxidant activities of the extracts that were active beyond the protective levels. I concluded that the morphological changes and the observed leakages showed rapid killing, significant membrane depolarization resulting in leakages and efflux of disintegrated cellular materials. In general, this study has justified the ethnotherapeutic importance of A. mearnsii and Z. mucronata subsp. mucronata in the treatment of microbial infections by indicating the possible mechanisms of action of the crude extracts on the tested bacteria. , Thesis (PhD) -- Faculty of Science and Agriculture, 2012
- Full Text:
- Date Issued: 2012-08
Settlement agreement on substantive issues between Food and Allied Workers Union and Tiger Brands - Beverages for the period 01st August 2012 to 31st July 2013
- Tiger Brands, Food and Allied Workers Union
- Authors: Tiger Brands , Food and Allied Workers Union
- Date: 2012-07-27
- Subjects: Tiger Brands , Food and Allied Workers Union , Collective bargaining -- South Africa , Wages -- South Africa
- Language: English
- Type: collective labor agreements , text
- Identifier: http://hdl.handle.net/10962/112194 , vital:33557 , Labour Research Service (LRS)
- Description: Settlement agreement on substantive issues between Food and Allied Workers Union and Tiger Brands - Beverages for the period 01st August 2012 to 31st July 2013.
- Full Text:
- Date Issued: 2012-07-27
- Authors: Tiger Brands , Food and Allied Workers Union
- Date: 2012-07-27
- Subjects: Tiger Brands , Food and Allied Workers Union , Collective bargaining -- South Africa , Wages -- South Africa
- Language: English
- Type: collective labor agreements , text
- Identifier: http://hdl.handle.net/10962/112194 , vital:33557 , Labour Research Service (LRS)
- Description: Settlement agreement on substantive issues between Food and Allied Workers Union and Tiger Brands - Beverages for the period 01st August 2012 to 31st July 2013.
- Full Text:
- Date Issued: 2012-07-27
Memorandum of Understanding between Food and Allied Workers Union and Tiger Brands - Beverages
- Tiger Brands, Food and Allied Workers Union
- Authors: Tiger Brands , Food and Allied Workers Union
- Date: 2012-07-19
- Subjects: Tiger Brands , Food and Allied Workers Union , Collective bargaining -- South Africa , Wages -- South Africa
- Language: English
- Type: collective labor agreements , text
- Identifier: http://hdl.handle.net/10962/112186 , vital:33556 , Labour Research Service (LRS)
- Description: Memorandum of Understanding between Food and Allied Workers Union and Tiger Brands - Beverages.
- Full Text:
- Date Issued: 2012-07-19
- Authors: Tiger Brands , Food and Allied Workers Union
- Date: 2012-07-19
- Subjects: Tiger Brands , Food and Allied Workers Union , Collective bargaining -- South Africa , Wages -- South Africa
- Language: English
- Type: collective labor agreements , text
- Identifier: http://hdl.handle.net/10962/112186 , vital:33556 , Labour Research Service (LRS)
- Description: Memorandum of Understanding between Food and Allied Workers Union and Tiger Brands - Beverages.
- Full Text:
- Date Issued: 2012-07-19
Agreement entered into between Coca-Cola Fortune and Food and Allied Workers Union
- Coca-Cola Fortune, Food and Allied Workers Union
- Authors: Coca-Cola Fortune , Food and Allied Workers Union
- Date: 2012-07-17
- Subjects: Cocal-Cola Fortune , Food and Allied Workers Union (FAWU) , Collective bargaining -- South Africa
- Language: English
- Type: collective labor agreements , text
- Identifier: http://hdl.handle.net/10962/95272 , vital:31139 , Labour Research Service (LRS)
- Description: Agreement entered into between Coca-Cola Fortune and Food and Allied Works Union on the 17th of July 2012.
- Full Text:
- Date Issued: 2012-07-17
- Authors: Coca-Cola Fortune , Food and Allied Workers Union
- Date: 2012-07-17
- Subjects: Cocal-Cola Fortune , Food and Allied Workers Union (FAWU) , Collective bargaining -- South Africa
- Language: English
- Type: collective labor agreements , text
- Identifier: http://hdl.handle.net/10962/95272 , vital:31139 , Labour Research Service (LRS)
- Description: Agreement entered into between Coca-Cola Fortune and Food and Allied Works Union on the 17th of July 2012.
- Full Text:
- Date Issued: 2012-07-17
Hauler driver agreement: Agreement entered into between Coca-Cola Fortune and Food and Allied Workers Union
- Coca-Cola Fortune, Food and Allied Workers Union
- Authors: Coca-Cola Fortune , Food and Allied Workers Union
- Date: 2012-07-17
- Subjects: Cocal-Cola Fortune , Food and Allied Workers Union (FAWU) , Collective bargaining -- South Africa
- Language: English
- Type: collective labor agreements , text
- Identifier: http://hdl.handle.net/10962/94238 , vital:31021 , Labour Research Service (LRS)
- Description: Hauler Driver Agreement: Agreement entered into between Coca-Cola Fortune and Food and Allied Works Union on the 17th of July 2012.
- Full Text:
- Date Issued: 2012-07-17
- Authors: Coca-Cola Fortune , Food and Allied Workers Union
- Date: 2012-07-17
- Subjects: Cocal-Cola Fortune , Food and Allied Workers Union (FAWU) , Collective bargaining -- South Africa
- Language: English
- Type: collective labor agreements , text
- Identifier: http://hdl.handle.net/10962/94238 , vital:31021 , Labour Research Service (LRS)
- Description: Hauler Driver Agreement: Agreement entered into between Coca-Cola Fortune and Food and Allied Works Union on the 17th of July 2012.
- Full Text:
- Date Issued: 2012-07-17
The New Unity Movement Bulletin
- Date: 2012-07
- Subjects: South Africa -- Politics and government , South Africa -- History -- 20th century , Government, Resistance to -- South Africa
- Language: English
- Type: text , Article
- Identifier: http://hdl.handle.net/10948/37353 , vital:34157 , Bulk File 7
- Description: The Bulletin was the official newsletter of the New Unity Movement. It was published about twice a year and contained articles reflecting the organisation's views on resistance to the Apartheid government.
- Full Text: false
- Date Issued: 2012-07
- Date: 2012-07
- Subjects: South Africa -- Politics and government , South Africa -- History -- 20th century , Government, Resistance to -- South Africa
- Language: English
- Type: text , Article
- Identifier: http://hdl.handle.net/10948/37353 , vital:34157 , Bulk File 7
- Description: The Bulletin was the official newsletter of the New Unity Movement. It was published about twice a year and contained articles reflecting the organisation's views on resistance to the Apartheid government.
- Full Text: false
- Date Issued: 2012-07
An investigation of issues of privacy, anonymity and multi-factor authentication in an open environment
- Authors: Miles, Shaun Graeme
- Date: 2012-06-20
- Subjects: Electronic data processing departments -- Security measures , Electronic data processing departments , Privacy, Right of , Computer security , Data protection , Computers -- Access control
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4656 , http://hdl.handle.net/10962/d1006653 , Electronic data processing departments -- Security measures , Electronic data processing departments , Privacy, Right of , Computer security , Data protection , Computers -- Access control
- Description: This thesis performs an investigation into issues concerning the broad area ofIdentity and Access Management, with a focus on open environments. Through literature research the issues of privacy, anonymity and access control are identified. The issue of privacy is an inherent problem due to the nature of the digital network environment. Information can be duplicated and modified regardless of the wishes and intentions ofthe owner of that information unless proper measures are taken to secure the environment. Once information is published or divulged on the network, there is very little way of controlling the subsequent usage of that information. To address this issue a model for privacy is presented that follows the user centric paradigm of meta-identity. The lack of anonymity, where security measures can be thwarted through the observation of the environment, is a concern for users and systems. By an attacker observing the communication channel and monitoring the interactions between users and systems over a long enough period of time, it is possible to infer knowledge about the users and systems. This knowledge is used to build an identity profile of potential victims to be used in subsequent attacks. To address the problem, mechanisms for providing an acceptable level of anonymity while maintaining adequate accountability (from a legal standpoint) are explored. In terms of access control, the inherent weakness of single factor authentication mechanisms is discussed. The typical mechanism is the user-name and password pair, which provides a single point of failure. By increasing the factors used in authentication, the amount of work required to compromise the system increases non-linearly. Within an open network, several aspects hinder wide scale adoption and use of multi-factor authentication schemes, such as token management and the impact on usability. The framework is developed from a Utopian point of view, with the aim of being applicable to many situations as opposed to a single specific domain. The framework incorporates multi-factor authentication over multiple paths using mobile phones and GSM networks, and explores the usefulness of such an approach. The models are in tum analysed, providing a discussion into the assumptions made and the problems faced by each model. , Adobe Acrobat Pro 9.5.1 , Adobe Acrobat 9.51 Paper Capture Plug-in
- Full Text:
- Authors: Miles, Shaun Graeme
- Date: 2012-06-20
- Subjects: Electronic data processing departments -- Security measures , Electronic data processing departments , Privacy, Right of , Computer security , Data protection , Computers -- Access control
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4656 , http://hdl.handle.net/10962/d1006653 , Electronic data processing departments -- Security measures , Electronic data processing departments , Privacy, Right of , Computer security , Data protection , Computers -- Access control
- Description: This thesis performs an investigation into issues concerning the broad area ofIdentity and Access Management, with a focus on open environments. Through literature research the issues of privacy, anonymity and access control are identified. The issue of privacy is an inherent problem due to the nature of the digital network environment. Information can be duplicated and modified regardless of the wishes and intentions ofthe owner of that information unless proper measures are taken to secure the environment. Once information is published or divulged on the network, there is very little way of controlling the subsequent usage of that information. To address this issue a model for privacy is presented that follows the user centric paradigm of meta-identity. The lack of anonymity, where security measures can be thwarted through the observation of the environment, is a concern for users and systems. By an attacker observing the communication channel and monitoring the interactions between users and systems over a long enough period of time, it is possible to infer knowledge about the users and systems. This knowledge is used to build an identity profile of potential victims to be used in subsequent attacks. To address the problem, mechanisms for providing an acceptable level of anonymity while maintaining adequate accountability (from a legal standpoint) are explored. In terms of access control, the inherent weakness of single factor authentication mechanisms is discussed. The typical mechanism is the user-name and password pair, which provides a single point of failure. By increasing the factors used in authentication, the amount of work required to compromise the system increases non-linearly. Within an open network, several aspects hinder wide scale adoption and use of multi-factor authentication schemes, such as token management and the impact on usability. The framework is developed from a Utopian point of view, with the aim of being applicable to many situations as opposed to a single specific domain. The framework incorporates multi-factor authentication over multiple paths using mobile phones and GSM networks, and explores the usefulness of such an approach. The models are in tum analysed, providing a discussion into the assumptions made and the problems faced by each model. , Adobe Acrobat Pro 9.5.1 , Adobe Acrobat 9.51 Paper Capture Plug-in
- Full Text:
A new continuum mapping procedure at HartRAO
- Authors: Büchner, Sarah
- Date: 2012-06-19
- Subjects: Hartebeesthoek Radio Astronomy Observatory , Radio astronomy -- Methodology , Galactic cosmic rays
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5510 , http://hdl.handle.net/10962/d1007766 , Hartebeesthoek Radio Astronomy Observatory , Radio astronomy -- Methodology , Galactic cosmic rays
- Description: A basket weaving technique for making radio continuum maps has been developed at the Hartebeesthoek Radio Astronomy Observatory (HartRAO). This data reduction technique significantly reduces scanning effects by using independent maps scanned in orthogonal directions. The observation and data analysis procedures that were developed are presented. The technique was used to map the supernova remnant MSH 15-52 at frequencies of 5000 MHz and 8500 MHz. The flux spectral index for this supernova remnant was found to be 0.83 ± 0.02 in this frequency range. Two regions (A and B) of the Galactic plane were observed at 8500 MHz with a resolution of 6'. Region A covered the 5°x5° area 47.5°< k 52.5°, Ibl < 2.5°, and region B was the 4.2°x3° area 320.4°< I <334.6°, Ibl < 1.5°. Far infrared observations at 60 !lm were used in conjunction with the radio maps to separate the thermal and non-thermal components of the radio emission. The technique can be used to map the Galactic plane at 8500 MHz using dual polarisation once the receiver at HartRAO has been upgraded. This would fulfil a need for a medium resolution, high frequency survey of the southern Galactic plane. , Adobe Acrobat Pro 9.4.6 , Adobe Acrobat 9.46 Paper Capture Plug-in
- Full Text:
- Authors: Büchner, Sarah
- Date: 2012-06-19
- Subjects: Hartebeesthoek Radio Astronomy Observatory , Radio astronomy -- Methodology , Galactic cosmic rays
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5510 , http://hdl.handle.net/10962/d1007766 , Hartebeesthoek Radio Astronomy Observatory , Radio astronomy -- Methodology , Galactic cosmic rays
- Description: A basket weaving technique for making radio continuum maps has been developed at the Hartebeesthoek Radio Astronomy Observatory (HartRAO). This data reduction technique significantly reduces scanning effects by using independent maps scanned in orthogonal directions. The observation and data analysis procedures that were developed are presented. The technique was used to map the supernova remnant MSH 15-52 at frequencies of 5000 MHz and 8500 MHz. The flux spectral index for this supernova remnant was found to be 0.83 ± 0.02 in this frequency range. Two regions (A and B) of the Galactic plane were observed at 8500 MHz with a resolution of 6'. Region A covered the 5°x5° area 47.5°< k 52.5°, Ibl < 2.5°, and region B was the 4.2°x3° area 320.4°< I <334.6°, Ibl < 1.5°. Far infrared observations at 60 !lm were used in conjunction with the radio maps to separate the thermal and non-thermal components of the radio emission. The technique can be used to map the Galactic plane at 8500 MHz using dual polarisation once the receiver at HartRAO has been upgraded. This would fulfil a need for a medium resolution, high frequency survey of the southern Galactic plane. , Adobe Acrobat Pro 9.4.6 , Adobe Acrobat 9.46 Paper Capture Plug-in
- Full Text:
Academic Practices and Reasoning: APR 111
- Authors: Scott,R , Blatchford, M
- Date: 2012-06
- Language: English
- Type: Examination paper
- Identifier: vital:18270 , http://hdl.handle.net/10353/d1011266
- Description: Academic Practices and Reasoning: APR 111, special examination June 2012.
- Full Text: false
- Date Issued: 2012-06
- Authors: Scott,R , Blatchford, M
- Date: 2012-06
- Language: English
- Type: Examination paper
- Identifier: vital:18270 , http://hdl.handle.net/10353/d1011266
- Description: Academic Practices and Reasoning: APR 111, special examination June 2012.
- Full Text: false
- Date Issued: 2012-06