Black man Redemption
- Didier Sourou Awadi aka DJ Awadi (performer), Amadou Barry aka Doug E Tee or Duggy-Tee (performer), Positive Black Soul (band name aka PBS), MALI K7 S.A. Ali Furka Toure Associe, Bamako
- Authors: Didier Sourou Awadi aka DJ Awadi (performer) , Amadou Barry aka Doug E Tee or Duggy-Tee (performer) , Positive Black Soul (band name aka PBS) , MALI K7 S.A. Ali Furka Toure Associe, Bamako
- Date: 2000
- Subjects: Rap (Music) , Folk music , Africa Senegal Dakar f-sg
- Language: Wolof
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/129813 , vital:36335 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC33-07
- Description: Senegalese hip hop song accompanied by traditional Senegalese instruments
- Full Text: false
- Date Issued: 2000
- Authors: Didier Sourou Awadi aka DJ Awadi (performer) , Amadou Barry aka Doug E Tee or Duggy-Tee (performer) , Positive Black Soul (band name aka PBS) , MALI K7 S.A. Ali Furka Toure Associe, Bamako
- Date: 2000
- Subjects: Rap (Music) , Folk music , Africa Senegal Dakar f-sg
- Language: Wolof
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/129813 , vital:36335 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC33-07
- Description: Senegalese hip hop song accompanied by traditional Senegalese instruments
- Full Text: false
- Date Issued: 2000
Blacky's Groove
- Founy Faya (author, composer, lead vocal), Marcelin Yace (flute), Evan's Yace (guitar, arrangement), Jojo (bass), Kone Ibrahim, Founy Faya (percussion), Astride, Oliza, Hariton T Cheky (chorus), Showbiz
- Authors: Founy Faya (author, composer, lead vocal) , Marcelin Yace (flute) , Evan's Yace (guitar, arrangement) , Jojo (bass) , Kone Ibrahim, Founy Faya (percussion) , Astride, Oliza, Hariton T Cheky (chorus) , Showbiz
- Date: 2000
- Subjects: Popular music , Reggae music , Africa Cote d'Ivoire Abidjan f-iv
- Language: French
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/129632 , vital:36314 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC31-01
- Description: Reggae music from Cote d'Ivoire's Burkinabe's diaspora
- Full Text: false
- Date Issued: 2000
- Authors: Founy Faya (author, composer, lead vocal) , Marcelin Yace (flute) , Evan's Yace (guitar, arrangement) , Jojo (bass) , Kone Ibrahim, Founy Faya (percussion) , Astride, Oliza, Hariton T Cheky (chorus) , Showbiz
- Date: 2000
- Subjects: Popular music , Reggae music , Africa Cote d'Ivoire Abidjan f-iv
- Language: French
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/129632 , vital:36314 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC31-01
- Description: Reggae music from Cote d'Ivoire's Burkinabe's diaspora
- Full Text: false
- Date Issued: 2000
Blacky's Groove (Dub)
- Founy Faya (author, composer, lead vocal), Marcelin Yace (flute), Evan's Yace (guitar, arrangement), Jojo (bass), Kone Ibrahim, Founy Faya (percussion), Astride, Oliza, Hariton T Cheky (chorus), Showbiz
- Authors: Founy Faya (author, composer, lead vocal) , Marcelin Yace (flute) , Evan's Yace (guitar, arrangement) , Jojo (bass) , Kone Ibrahim, Founy Faya (percussion) , Astride, Oliza, Hariton T Cheky (chorus) , Showbiz
- Date: 2000
- Subjects: Popular music , Reggae music , Africa Cote d'Ivoire Abidjan f-iv
- Language: French
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/129678 , vital:36320 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC31-07
- Description: Reggae music from Cote d'Ivoire's Burkinabe's diaspora
- Full Text: false
- Date Issued: 2000
- Authors: Founy Faya (author, composer, lead vocal) , Marcelin Yace (flute) , Evan's Yace (guitar, arrangement) , Jojo (bass) , Kone Ibrahim, Founy Faya (percussion) , Astride, Oliza, Hariton T Cheky (chorus) , Showbiz
- Date: 2000
- Subjects: Popular music , Reggae music , Africa Cote d'Ivoire Abidjan f-iv
- Language: French
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/129678 , vital:36320 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC31-07
- Description: Reggae music from Cote d'Ivoire's Burkinabe's diaspora
- Full Text: false
- Date Issued: 2000
Bomane Mba
- Priscilia Ngando (lead vocal), Mevio-Mayo, Dany Mouanga, Mouasso (rhythm guitars), Aubin Sandjo, Scorpionkabambay, Mouche Bass (bass guitar), Dany Mouanga, Eric Sefu (solo guitar), Aubin Sandjo, Paul Balong (keyboard), Abel Massock, Fabo Claude, Nono (chorus), Danger Ngando Konne, Moussa Haissam (composers), Aubin Sandjo (drum, percussion, keyboard), Alhadji Mallam Issa (talking drum), Moussa Haissam
- Authors: Priscilia Ngando (lead vocal) , Mevio-Mayo, Dany Mouanga, Mouasso (rhythm guitars) , Aubin Sandjo, Scorpionkabambay, Mouche Bass (bass guitar) , Dany Mouanga, Eric Sefu (solo guitar) , Aubin Sandjo, Paul Balong (keyboard) , Abel Massock, Fabo Claude, Nono (chorus) , Danger Ngando Konne, Moussa Haissam (composers) , Aubin Sandjo (drum, percussion, keyboard) , Alhadji Mallam Issa (talking drum) , Moussa Haissam
- Date: 2000
- Subjects: Popular music , Popular music--Africa, West , Africa Cameroon Yaounde f-cm
- Language: French
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/130864 , vital:36490 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC47-06
- Description: Popular songs from Cameroon, featuring female vocal accompanied by keyboard, chorus, guitar, percussion and talking drum, playing West and Central African rhythms
- Full Text: false
- Date Issued: 2000
- Authors: Priscilia Ngando (lead vocal) , Mevio-Mayo, Dany Mouanga, Mouasso (rhythm guitars) , Aubin Sandjo, Scorpionkabambay, Mouche Bass (bass guitar) , Dany Mouanga, Eric Sefu (solo guitar) , Aubin Sandjo, Paul Balong (keyboard) , Abel Massock, Fabo Claude, Nono (chorus) , Danger Ngando Konne, Moussa Haissam (composers) , Aubin Sandjo (drum, percussion, keyboard) , Alhadji Mallam Issa (talking drum) , Moussa Haissam
- Date: 2000
- Subjects: Popular music , Popular music--Africa, West , Africa Cameroon Yaounde f-cm
- Language: French
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/130864 , vital:36490 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC47-06
- Description: Popular songs from Cameroon, featuring female vocal accompanied by keyboard, chorus, guitar, percussion and talking drum, playing West and Central African rhythms
- Full Text: false
- Date Issued: 2000
Boul ma mine
- Didier Sourou Awadi aka DJ Awadi (performer, author), Amadou Barry aka Doug E. Tee, Duggy Tee (performer, author), Palm Tree Enter/Africa with P.B.S. Production
- Authors: Didier Sourou Awadi aka DJ Awadi (performer, author) , Amadou Barry aka Doug E. Tee, Duggy Tee (performer, author) , Palm Tree Enter/Africa with P.B.S. Production
- Date: 2000
- Subjects: Rap (Music) , Popular music--Africa, West , Africa Senegal Dakar f-sg
- Language: Wolof , English , French
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/131464 , vital:36583 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC53-02
- Description: Hip hop song sung in English, French and Wolof, accompanied by traditional Senegalese kora and tama musical instruments, as well as Western instruments
- Full Text: false
- Date Issued: 2000
- Authors: Didier Sourou Awadi aka DJ Awadi (performer, author) , Amadou Barry aka Doug E. Tee, Duggy Tee (performer, author) , Palm Tree Enter/Africa with P.B.S. Production
- Date: 2000
- Subjects: Rap (Music) , Popular music--Africa, West , Africa Senegal Dakar f-sg
- Language: Wolof , English , French
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/131464 , vital:36583 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC53-02
- Description: Hip hop song sung in English, French and Wolof, accompanied by traditional Senegalese kora and tama musical instruments, as well as Western instruments
- Full Text: false
- Date Issued: 2000
Bread and honour: white working class women and Afrikaner Nationalism in the 1930s
- Authors: Vincent, Louise
- Date: 2000
- Language: English
- Type: text , Article
- Identifier: vital:6205 , http://hdl.handle.net/10962/d1008575
- Description: Women have occupied a central place in the ideological formulations of nationalist movements. In particular, the figure of woman as mother recurs throughout the history of nationalist political mobilizations. In Afrikaner nationalism, this symbolic female identity takes the form of the volksmoeder (mother of the nation) icon, commonly assumed to describe a highly circumscribed set of women's social roles, created for women by men. The academic orthodoxy holds that middle-class Afrikaner women submitted to the volksmoeder ideology early on in the development of Afrikaner nationalism but that the working class Afrikaner women of the Garment Workers' Union (GWU) represented an enclave of resistance to dominant definitions of ethnic identity. They chose instead to ally themselves with militant, class-conscious trade unionism. This paper argues that Afrikaner women of different classes helped to shape the contours of the volksmoeder icon. Whilst middle class Afrikaner women questioned the idea that their social contribution should remain restricted to narrow familial and charitable concerns, prominent working class women laid claim to their own entitlement to the volksmoeder heritage. In doing so, the latter contributed to the popularization and reinterpretation of an ideology that was at this time seeking a wider audience. The paper argues that the incorporation of Afrikaner women into the socialist milieu of the GWU did not result in these women simply discarding the ethnic components of their identity. Rather their self-awareness as Afrikaner women with a recent rural past was grafted onto their new experience as urban factory workers. The way in which leading working class Afrikaner women articulated this potent combination of 'derived' and 'inherent' ideology cannot be excluded from the complex process whereby Afrikaner nationalism achieved success as a movement appealing to its imagined community across boundaries of class and gender.
- Full Text:
- Date Issued: 2000
- Authors: Vincent, Louise
- Date: 2000
- Language: English
- Type: text , Article
- Identifier: vital:6205 , http://hdl.handle.net/10962/d1008575
- Description: Women have occupied a central place in the ideological formulations of nationalist movements. In particular, the figure of woman as mother recurs throughout the history of nationalist political mobilizations. In Afrikaner nationalism, this symbolic female identity takes the form of the volksmoeder (mother of the nation) icon, commonly assumed to describe a highly circumscribed set of women's social roles, created for women by men. The academic orthodoxy holds that middle-class Afrikaner women submitted to the volksmoeder ideology early on in the development of Afrikaner nationalism but that the working class Afrikaner women of the Garment Workers' Union (GWU) represented an enclave of resistance to dominant definitions of ethnic identity. They chose instead to ally themselves with militant, class-conscious trade unionism. This paper argues that Afrikaner women of different classes helped to shape the contours of the volksmoeder icon. Whilst middle class Afrikaner women questioned the idea that their social contribution should remain restricted to narrow familial and charitable concerns, prominent working class women laid claim to their own entitlement to the volksmoeder heritage. In doing so, the latter contributed to the popularization and reinterpretation of an ideology that was at this time seeking a wider audience. The paper argues that the incorporation of Afrikaner women into the socialist milieu of the GWU did not result in these women simply discarding the ethnic components of their identity. Rather their self-awareness as Afrikaner women with a recent rural past was grafted onto their new experience as urban factory workers. The way in which leading working class Afrikaner women articulated this potent combination of 'derived' and 'inherent' ideology cannot be excluded from the complex process whereby Afrikaner nationalism achieved success as a movement appealing to its imagined community across boundaries of class and gender.
- Full Text:
- Date Issued: 2000
Brothers go solo on piano
- Authors: Thomas, Cornelius
- Date: 2000
- Subjects: Schilder, Tony Schilder, Ebrahim Kalil Jazz musicians
- Type: article
- Identifier: http://hdl.handle.net/10962/32775 , vital:24079 , This image is held at the Cory Library for Humanities Research at Rhodes University. For further information contact cory@ru.ac.za. The digitisation of this image was made possible through a generous grant received from the Andrew W. Mellon Foundation 2014-2017. , MS 20 018
- Description: Photocopied article from the newspaper The Daily Dispatch about two brothers who are Jazz musicians
- Full Text:
- Date Issued: 2000
- Authors: Thomas, Cornelius
- Date: 2000
- Subjects: Schilder, Tony Schilder, Ebrahim Kalil Jazz musicians
- Type: article
- Identifier: http://hdl.handle.net/10962/32775 , vital:24079 , This image is held at the Cory Library for Humanities Research at Rhodes University. For further information contact cory@ru.ac.za. The digitisation of this image was made possible through a generous grant received from the Andrew W. Mellon Foundation 2014-2017. , MS 20 018
- Description: Photocopied article from the newspaper The Daily Dispatch about two brothers who are Jazz musicians
- Full Text:
- Date Issued: 2000
Bul Lax Sama Liguey
- Selle Diop (comoser, performer), Massamba Sakho (composer), Souleymane Faye (arranged by), Lay Diagne (keyboards), Robson (accoustic guitar, percussion), Nagirou Dia, Selle Diop (chorus), Studio 2000
- Authors: Selle Diop (comoser, performer) , Massamba Sakho (composer) , Souleymane Faye (arranged by) , Lay Diagne (keyboards) , Robson (accoustic guitar, percussion) , Nagirou Dia, Selle Diop (chorus) , Studio 2000
- Date: 2000
- Subjects: Popular music , Popular music--Africa, West , Reggae music , Africa Senegal Dakar f-sg
- Language: Wolof
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/128494 , vital:36115 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC11-04
- Description: Senegalese band featuring singing accompanied by keyboard, guitar and percussion
- Full Text: false
- Date Issued: 2000
- Authors: Selle Diop (comoser, performer) , Massamba Sakho (composer) , Souleymane Faye (arranged by) , Lay Diagne (keyboards) , Robson (accoustic guitar, percussion) , Nagirou Dia, Selle Diop (chorus) , Studio 2000
- Date: 2000
- Subjects: Popular music , Popular music--Africa, West , Reggae music , Africa Senegal Dakar f-sg
- Language: Wolof
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/128494 , vital:36115 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC11-04
- Description: Senegalese band featuring singing accompanied by keyboard, guitar and percussion
- Full Text: false
- Date Issued: 2000
Cape Town talks about sex workers
- Sex Workers’ Education & Advocacy Taskforce (SWEAT)
- Authors: Sex Workers’ Education & Advocacy Taskforce (SWEAT)
- Date: 2000
- Subjects: SWEAT
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/168829 , vital:41651
- Description: On Monday 25 September,, as- part of the One City Festival, the Black Arts Collective hosted a debate about sex work. Natasha from SWEAT spoke about the why the government should decriminalize sex work. Khadija Magardie, a journalist from the Mail and Guardian newspaper, sent a speech talking about how sex work should be abolished by changing the law to make the clients criminals, so they can be arrested for buying sex from sex workers. Members of the public came to the debate, and talked about their feelings about sex work, and asked questions and gave comments. Generally most people were supportive of the fact that sex workers deserve human rights, even if they didn’t like the idea that people sell sex for a living. The city is starting to talk about sex work and sex workers, which is very exciting. It is a chance for SWEAT to talk about the realities of the industry, and to break down some of the stereotypes that many members of the public have about sex workers and sex work. One element that is missing from these discussions is the voices of sex workers themselves. SWEAT points out that it is very difficult for sex workers to talk publicly because of the stigmatization they suffer, and because sex work is still illegal. If you are interested in talking to the public about your experiences and opinions, please contact SWEAT and let us know, so that next time there is a chance to speak to the public we can invite you along.
- Full Text:
- Date Issued: 2000
- Authors: Sex Workers’ Education & Advocacy Taskforce (SWEAT)
- Date: 2000
- Subjects: SWEAT
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/168829 , vital:41651
- Description: On Monday 25 September,, as- part of the One City Festival, the Black Arts Collective hosted a debate about sex work. Natasha from SWEAT spoke about the why the government should decriminalize sex work. Khadija Magardie, a journalist from the Mail and Guardian newspaper, sent a speech talking about how sex work should be abolished by changing the law to make the clients criminals, so they can be arrested for buying sex from sex workers. Members of the public came to the debate, and talked about their feelings about sex work, and asked questions and gave comments. Generally most people were supportive of the fact that sex workers deserve human rights, even if they didn’t like the idea that people sell sex for a living. The city is starting to talk about sex work and sex workers, which is very exciting. It is a chance for SWEAT to talk about the realities of the industry, and to break down some of the stereotypes that many members of the public have about sex workers and sex work. One element that is missing from these discussions is the voices of sex workers themselves. SWEAT points out that it is very difficult for sex workers to talk publicly because of the stigmatization they suffer, and because sex work is still illegal. If you are interested in talking to the public about your experiences and opinions, please contact SWEAT and let us know, so that next time there is a chance to speak to the public we can invite you along.
- Full Text:
- Date Issued: 2000
Cape Town to host North Sea Jazz Festival
- Authors: Thomas, Cornelius
- Date: 2000
- Subjects: North Sea Jazz Festival -- South Africa -- Cape Town Performing arts -- South Africa Jazz musicians -- South Africa , North Sea Jazz Festival -- Marketing
- Type: article
- Identifier: http://hdl.handle.net/10962/33011 , vital:24104 , This image is held at the Cory Library for Humanities Research at Rhodes University. For further information contact cory@ru.ac.za. The digitisation of this image was made possible through a generous grant received from the Andrew W. Mellon Foundation 2014-2017. , MS 20 023
- Description: Photocopied article from the newspaper The Daily Dispatch about the North Sea Jazz Festival hosted by Cape Town
- Full Text:
- Date Issued: 2000
- Authors: Thomas, Cornelius
- Date: 2000
- Subjects: North Sea Jazz Festival -- South Africa -- Cape Town Performing arts -- South Africa Jazz musicians -- South Africa , North Sea Jazz Festival -- Marketing
- Type: article
- Identifier: http://hdl.handle.net/10962/33011 , vital:24104 , This image is held at the Cory Library for Humanities Research at Rhodes University. For further information contact cory@ru.ac.za. The digitisation of this image was made possible through a generous grant received from the Andrew W. Mellon Foundation 2014-2017. , MS 20 023
- Description: Photocopied article from the newspaper The Daily Dispatch about the North Sea Jazz Festival hosted by Cape Town
- Full Text:
- Date Issued: 2000
Cardiac responses under diverse combinations of marching speed and backpack load
- Scott, Patricia A, Christie, Candice J
- Authors: Scott, Patricia A , Christie, Candice J
- Date: 2000
- Language: English
- Type: Article
- Identifier: vital:6755 , http://hdl.handle.net/10962/d1009457
- Description: Thirty seasoned foot-soldiers were exposed to a total of 16 combinations of marching speed and backpack load, each soldier experiencing 8 of the combinations between 3.5km.h-1 with a 20kg load and 6.5km.h-1 with a 65kg load. Detailed physiological analyses were conducted, of which the heart rate responses are reported here. Steady state was achieved with all combinations under 5.5km.h-1 speed and 35kg load. Excessively elevated heart rates were elicited by all loads over 20kg at 6.5km.h-1 marching speed; by loads over 35kg at 5.5km.h-1 marching speed and by the 65kg load even at 4.5km.h-1 marching speed.
- Full Text:
- Date Issued: 2000
- Authors: Scott, Patricia A , Christie, Candice J
- Date: 2000
- Language: English
- Type: Article
- Identifier: vital:6755 , http://hdl.handle.net/10962/d1009457
- Description: Thirty seasoned foot-soldiers were exposed to a total of 16 combinations of marching speed and backpack load, each soldier experiencing 8 of the combinations between 3.5km.h-1 with a 20kg load and 6.5km.h-1 with a 65kg load. Detailed physiological analyses were conducted, of which the heart rate responses are reported here. Steady state was achieved with all combinations under 5.5km.h-1 speed and 35kg load. Excessively elevated heart rates were elicited by all loads over 20kg at 6.5km.h-1 marching speed; by loads over 35kg at 5.5km.h-1 marching speed and by the 65kg load even at 4.5km.h-1 marching speed.
- Full Text:
- Date Issued: 2000
Characterization of amide bond hydrolysis in novel hydantoinase-producing bacteria
- Authors: Skepu, Zoleka G
- Date: 2000
- Subjects: Amides , Hydrolysis , Hydantoin , Imides
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3911 , http://hdl.handle.net/10962/d1003970 , Amides , Hydrolysis , Hydantoin , Imides
- Description: This thesis describes a series of investigations into the amide bond-hydrolyzing activity of bacterial strains RU-KM1, RU-KM3L, RU-KM3S, and RU-OR, which were previously isolated for their ability to hydrolyze hydantoins to amino acids. The main aim of the study was to develop biotransformations with potential application in the production of enantiomerically pure amino acids and related compounds. Several compounds may be used as substrates by biocatalysts for the production of amino acids, such as hydantoins, amino nitriles, and amides. These compounds are not only important for amino acid production, but they may be used for production of other industrially important compounds, such as 2- arylpropionic acids, which are non-steroidal anti-inflammatory drugs. Thus, the ability of the above-mentioned strains to hydrolyze these substrates was investigated, with the view to utilizing the maximum potential of these biocatalysts. The compounds used as substrates in the investigation are all essentially amides. Thus, the ability of the strains to hydrolyze imides, hydantoins, and amides, was investigated. In particular, imides have a structure which is very similar to that of hydantoins, and thus it was an objective of the study to determine whether these strains could hydrolyze imides. Imidehydrolyzing activity has only recently been discovered in microorganisms. Hydantoin conversion involves a two-step hydrolysis reaction which yields, initially, an Ncarbamylamino acid intermediate, and subsequently, an "-amino acid. The hydantoinhydrolyzing enzymes of a Pseudomonas putida strain, RU-KM3S, were characterized in a crude extract preparation and reaction conditions for its biocatalytic application were optimized. The optimum conditions for conversion of 5-methylhydantoin were found to be 3 hours at 40°C, with conversion yields greater than 50% achieved. The enzymes of RU-KM3S demonstrated considerable stability, retaining 80% of their activity after incubation at 40°C for 3 hours. The activities of the enzymes were increased by the addition of a detergent to the extraction medium, suggesting that the enzymes might be membrane-bound. The results of the determination of the metal-dependence of the hydantoinase and N-carbamylase of RUKM3S suggested that these enzymes required metal ions for activity, with metal ions such as Mg²⁺, Mn²⁺, Zn²⁺, and Co²⁺ resulting in activation of the enzymes. However, Cu²⁺ and Fe²⁺ caused inactivation of these enzymes. The stereoselectivity of the enzymes was investigated, and the results suggested that the hydantoinase was non-selective, whereas the N-carbamylase was L-selective. The hydantoin substrate selectivity of RU-KM3S was compared to that of three other hydantoinase-producing bacteria, RU-KM1, RU-KM3L, and RU-OR. The four strains were able to hydrolyze all of the seven substrates tested. However, there was a difference in activity levels between crude extract preparations and whole cells, with crude extracts generally showing higher activity than whole cells, except in the case of RU-KM1. Some difference was also observed in the order of preference of substrates between whole cells and crude extracts. The preferred substrate for RU-KM1 whole cells was isopropylhydantoin, whereas the crude extract preparation preferentially hydrolyzed p-hydroxyphenylhydantoin. RU-KM3L whole cells achieved a higher conversion yield with isobutylhydantoin, whereas the crude extract achieved a higher yield with 5-t-butylhydantoin. RU-KM3S whole cells and crude extract preferentially hydrolyzed 5-n-butylhydantoin, although the yield was greater with the crude extract. The highest conversion yields were observed with RU-KM3S crude extract, with conversion yields of 71.6% and 100% for n-butylhydantoin and phydroxyphenylhydantoin, respectively.The ability of RU-KM1, RU-KM3L, and RU-KM3S to hydrolyze nitriles, initially to amides and subsequently to carboxylic acids, was investigated. These strains were demonstrated to be unable to utilize acrylonitrile, propionitrile and benzonitrile as nitrogen sources, but were able to hydrolyze acrylonitrile, propionitrile and acetonitrile, in resting cell reactions. Nitrile hydrolysis was demonstrated to be inducible in all three strains, and the enzyme system responsible for nitrile hydrolysis was proposed to be a nitrile hydratase-amidase system. Amidase activity in the four bacterial strains was investigated. The ability of RU-KM1, RUKM3L, RU-KM3S, and RU-OR to utilize amides as a nitrogen source was investigated, and the results showed that propionamide was a good nitrogen source for all four of the strains. Amide-hydrolyzing activity, by resting cells, was shown to be inducible by propionamide in all four strains. RU-KM3S demonstrated superior amide-hydrolyzing ability in that it hydrolyzed propionamide, acetamide, and acrylamide to a greater extent than the other strains. Resting cells of RU-KM1 and RU-OR were demonstrated to have the ability to hydrolyze the imide substrate, succinimide, and this imidase activity was found to be inducible. These strains were also able to utilize this imide as the sole source of nitrogen for growth, which is a novel finding, as to date, bacteria have only be reported to utilize imides as a carbon source. The identity of the enzyme system responsible for succinimide hydrolysis is not yet clear. In conclusion, the hydantoin-hydrolyzing enzymes of RU-KM3S have been shown to be possibly membrane associated, which is a novel finding that has also been proposed in three other hydantoinase-producing strains in our laboratory. This study has shown that the Ncarbamylase of RU-KM3S is L-stereoselective, which, to our knowledge, is the first report of an L-stereospecific N-carbamylase in a Pseudomonas putida. Publication of these findings is already in progress. This is the first report on the study of imide hydrolysis in either an Agrobacterium tumefaciens or a Pseudomonas sp., and publications reporting these results are in preparation.
- Full Text:
- Date Issued: 2000
- Authors: Skepu, Zoleka G
- Date: 2000
- Subjects: Amides , Hydrolysis , Hydantoin , Imides
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3911 , http://hdl.handle.net/10962/d1003970 , Amides , Hydrolysis , Hydantoin , Imides
- Description: This thesis describes a series of investigations into the amide bond-hydrolyzing activity of bacterial strains RU-KM1, RU-KM3L, RU-KM3S, and RU-OR, which were previously isolated for their ability to hydrolyze hydantoins to amino acids. The main aim of the study was to develop biotransformations with potential application in the production of enantiomerically pure amino acids and related compounds. Several compounds may be used as substrates by biocatalysts for the production of amino acids, such as hydantoins, amino nitriles, and amides. These compounds are not only important for amino acid production, but they may be used for production of other industrially important compounds, such as 2- arylpropionic acids, which are non-steroidal anti-inflammatory drugs. Thus, the ability of the above-mentioned strains to hydrolyze these substrates was investigated, with the view to utilizing the maximum potential of these biocatalysts. The compounds used as substrates in the investigation are all essentially amides. Thus, the ability of the strains to hydrolyze imides, hydantoins, and amides, was investigated. In particular, imides have a structure which is very similar to that of hydantoins, and thus it was an objective of the study to determine whether these strains could hydrolyze imides. Imidehydrolyzing activity has only recently been discovered in microorganisms. Hydantoin conversion involves a two-step hydrolysis reaction which yields, initially, an Ncarbamylamino acid intermediate, and subsequently, an "-amino acid. The hydantoinhydrolyzing enzymes of a Pseudomonas putida strain, RU-KM3S, were characterized in a crude extract preparation and reaction conditions for its biocatalytic application were optimized. The optimum conditions for conversion of 5-methylhydantoin were found to be 3 hours at 40°C, with conversion yields greater than 50% achieved. The enzymes of RU-KM3S demonstrated considerable stability, retaining 80% of their activity after incubation at 40°C for 3 hours. The activities of the enzymes were increased by the addition of a detergent to the extraction medium, suggesting that the enzymes might be membrane-bound. The results of the determination of the metal-dependence of the hydantoinase and N-carbamylase of RUKM3S suggested that these enzymes required metal ions for activity, with metal ions such as Mg²⁺, Mn²⁺, Zn²⁺, and Co²⁺ resulting in activation of the enzymes. However, Cu²⁺ and Fe²⁺ caused inactivation of these enzymes. The stereoselectivity of the enzymes was investigated, and the results suggested that the hydantoinase was non-selective, whereas the N-carbamylase was L-selective. The hydantoin substrate selectivity of RU-KM3S was compared to that of three other hydantoinase-producing bacteria, RU-KM1, RU-KM3L, and RU-OR. The four strains were able to hydrolyze all of the seven substrates tested. However, there was a difference in activity levels between crude extract preparations and whole cells, with crude extracts generally showing higher activity than whole cells, except in the case of RU-KM1. Some difference was also observed in the order of preference of substrates between whole cells and crude extracts. The preferred substrate for RU-KM1 whole cells was isopropylhydantoin, whereas the crude extract preparation preferentially hydrolyzed p-hydroxyphenylhydantoin. RU-KM3L whole cells achieved a higher conversion yield with isobutylhydantoin, whereas the crude extract achieved a higher yield with 5-t-butylhydantoin. RU-KM3S whole cells and crude extract preferentially hydrolyzed 5-n-butylhydantoin, although the yield was greater with the crude extract. The highest conversion yields were observed with RU-KM3S crude extract, with conversion yields of 71.6% and 100% for n-butylhydantoin and phydroxyphenylhydantoin, respectively.The ability of RU-KM1, RU-KM3L, and RU-KM3S to hydrolyze nitriles, initially to amides and subsequently to carboxylic acids, was investigated. These strains were demonstrated to be unable to utilize acrylonitrile, propionitrile and benzonitrile as nitrogen sources, but were able to hydrolyze acrylonitrile, propionitrile and acetonitrile, in resting cell reactions. Nitrile hydrolysis was demonstrated to be inducible in all three strains, and the enzyme system responsible for nitrile hydrolysis was proposed to be a nitrile hydratase-amidase system. Amidase activity in the four bacterial strains was investigated. The ability of RU-KM1, RUKM3L, RU-KM3S, and RU-OR to utilize amides as a nitrogen source was investigated, and the results showed that propionamide was a good nitrogen source for all four of the strains. Amide-hydrolyzing activity, by resting cells, was shown to be inducible by propionamide in all four strains. RU-KM3S demonstrated superior amide-hydrolyzing ability in that it hydrolyzed propionamide, acetamide, and acrylamide to a greater extent than the other strains. Resting cells of RU-KM1 and RU-OR were demonstrated to have the ability to hydrolyze the imide substrate, succinimide, and this imidase activity was found to be inducible. These strains were also able to utilize this imide as the sole source of nitrogen for growth, which is a novel finding, as to date, bacteria have only be reported to utilize imides as a carbon source. The identity of the enzyme system responsible for succinimide hydrolysis is not yet clear. In conclusion, the hydantoin-hydrolyzing enzymes of RU-KM3S have been shown to be possibly membrane associated, which is a novel finding that has also been proposed in three other hydantoinase-producing strains in our laboratory. This study has shown that the Ncarbamylase of RU-KM3S is L-stereoselective, which, to our knowledge, is the first report of an L-stereospecific N-carbamylase in a Pseudomonas putida. Publication of these findings is already in progress. This is the first report on the study of imide hydrolysis in either an Agrobacterium tumefaciens or a Pseudomonas sp., and publications reporting these results are in preparation.
- Full Text:
- Date Issued: 2000
Chateau de Sable
- Rokia Traore (author, composer, arranger, interpreter, lead singer, guitar), Coco Mbassi, Rokia Traore (chorus), Adama Diarra (balafon), Mamah Diabate (N'Goni), Andra Kouyate (N'Goni Ba), Sidiki Camara (percussion), Label Bleu
- Authors: Rokia Traore (author, composer, arranger, interpreter, lead singer, guitar) , Coco Mbassi, Rokia Traore (chorus) , Adama Diarra (balafon) , Mamah Diabate (N'Goni) , Andra Kouyate (N'Goni Ba) , Sidiki Camara (percussion) , Label Bleu
- Date: 2000
- Subjects: Popular music , Popular music--Africa, West , Africa Mali Bamako f-ml
- Language: French
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/131118 , vital:36525 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC49-08
- Description: Non-Malian vocal style and multilayered singing accompanied by traditional Malian instuments played with a modern edge
- Full Text: false
- Date Issued: 2000
- Authors: Rokia Traore (author, composer, arranger, interpreter, lead singer, guitar) , Coco Mbassi, Rokia Traore (chorus) , Adama Diarra (balafon) , Mamah Diabate (N'Goni) , Andra Kouyate (N'Goni Ba) , Sidiki Camara (percussion) , Label Bleu
- Date: 2000
- Subjects: Popular music , Popular music--Africa, West , Africa Mali Bamako f-ml
- Language: French
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/131118 , vital:36525 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC49-08
- Description: Non-Malian vocal style and multilayered singing accompanied by traditional Malian instuments played with a modern edge
- Full Text: false
- Date Issued: 2000
Cheikhul Khadim
- Pap Jibi Ba (lead vocal), Ndeye Marie Ndiaye, Zacaria Niang, Ousmane Seck (vocals), Cheikh Tidiane Tall (guitar), Pape Ndiaye (sabar, talmba tamb), Dame Mbaye (xalam), Studio 2000
- Authors: Pap Jibi Ba (lead vocal) , Ndeye Marie Ndiaye, Zacaria Niang, Ousmane Seck (vocals) , Cheikh Tidiane Tall (guitar) , Pape Ndiaye (sabar, talmba tamb) , Dame Mbaye (xalam) , Studio 2000
- Date: 2000
- Subjects: Folk music , Popular music--Africa, West , Africa Senegal Dakar f-sg
- Language: Wolof
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/130279 , vital:36398 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC40-06
- Description: Modern Senegalese song accompanied by traditional instruments including the sabar, xalam and talmba tamb, that create a combination of mbalax, yaba, ndaga, wolof and yela peul rhythms, fused with Afro-Cuban and soul music
- Full Text: false
- Date Issued: 2000
- Authors: Pap Jibi Ba (lead vocal) , Ndeye Marie Ndiaye, Zacaria Niang, Ousmane Seck (vocals) , Cheikh Tidiane Tall (guitar) , Pape Ndiaye (sabar, talmba tamb) , Dame Mbaye (xalam) , Studio 2000
- Date: 2000
- Subjects: Folk music , Popular music--Africa, West , Africa Senegal Dakar f-sg
- Language: Wolof
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/130279 , vital:36398 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC40-06
- Description: Modern Senegalese song accompanied by traditional instruments including the sabar, xalam and talmba tamb, that create a combination of mbalax, yaba, ndaga, wolof and yela peul rhythms, fused with Afro-Cuban and soul music
- Full Text: false
- Date Issued: 2000
Chikiling Ling Lee
- Selle Diop (comoser, performer), Souleymane Faye (arranged by), Lay Diagne (keyboards), Robson (accoustic guitar, percussion), Nagirou Dia, Selle Diop (chorus), Studio 2000
- Authors: Selle Diop (comoser, performer) , Souleymane Faye (arranged by) , Lay Diagne (keyboards) , Robson (accoustic guitar, percussion) , Nagirou Dia, Selle Diop (chorus) , Studio 2000
- Date: 2000
- Subjects: Popular music , Popular music--Africa, West , Africa Senegal Dakar f-sg
- Language: Wolof
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/128485 , vital:36114 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC11-03
- Description: Senegalese band featuring singing accompanied by keyboard, guitar and percussion
- Full Text: false
- Date Issued: 2000
- Authors: Selle Diop (comoser, performer) , Souleymane Faye (arranged by) , Lay Diagne (keyboards) , Robson (accoustic guitar, percussion) , Nagirou Dia, Selle Diop (chorus) , Studio 2000
- Date: 2000
- Subjects: Popular music , Popular music--Africa, West , Africa Senegal Dakar f-sg
- Language: Wolof
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/128485 , vital:36114 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC11-03
- Description: Senegalese band featuring singing accompanied by keyboard, guitar and percussion
- Full Text: false
- Date Issued: 2000
Colonial photography in nineteenth century Grahamstown: an analysis of the Dr W.G. Atherstone Bequest
- Authors: Waters, Hywell George
- Date: 2000
- Subjects: Atherstone, W. G. (William Guybon), 1814-1898 Art and photography Photography -- Technique
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2426 , http://hdl.handle.net/10962/d1002222
- Description: The research for this degree comprises of a theoretical dissertationand a practicalcomponent of exhibited photographs. The theoretical research investigates the original photographic prints and glass-plate negatives taken betweenthe 1840's and 1890's, by the late Dr. W.G. Atherstone - an enthusiastic, Grahamstown amateur photographer. Dr W. G Atherstone's prints and negatives were examined by the author to deduce and establish his photographic abilities, his numerous techniques, diverse subject matter and the pictorialconstructionof his images. Selected works will be examined in order to interpret and illustrate his diverse interests and approaches towards photography. The selection of these photographs was determined by their pertinence to subject matter, and to the pictorial and historical considerations of the candidate. These issues are finally examined in relation to the candidates's own approach to photography today.
- Full Text:
- Date Issued: 2000
- Authors: Waters, Hywell George
- Date: 2000
- Subjects: Atherstone, W. G. (William Guybon), 1814-1898 Art and photography Photography -- Technique
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2426 , http://hdl.handle.net/10962/d1002222
- Description: The research for this degree comprises of a theoretical dissertationand a practicalcomponent of exhibited photographs. The theoretical research investigates the original photographic prints and glass-plate negatives taken betweenthe 1840's and 1890's, by the late Dr. W.G. Atherstone - an enthusiastic, Grahamstown amateur photographer. Dr W. G Atherstone's prints and negatives were examined by the author to deduce and establish his photographic abilities, his numerous techniques, diverse subject matter and the pictorialconstructionof his images. Selected works will be examined in order to interpret and illustrate his diverse interests and approaches towards photography. The selection of these photographs was determined by their pertinence to subject matter, and to the pictorial and historical considerations of the candidate. These issues are finally examined in relation to the candidates's own approach to photography today.
- Full Text:
- Date Issued: 2000
Comparative Spectroscopic and Electrochemical Properties of Bis (octakis (dodecylthio) naphthalocyaninato) europium (III) and Bis (tetra-tert-butylnaphthalocyaninato) europium (III) Complexes
- Nyokong, Tebello, Furuya, Fumio, Kobayashi, Nagao, Du, Daming, Liu, Wei, Jiang, Jianzhuang
- Authors: Nyokong, Tebello , Furuya, Fumio , Kobayashi, Nagao , Du, Daming , Liu, Wei , Jiang, Jianzhuang
- Date: 2000
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/293174 , vital:57062 , xlink:href="https://doi.org/10.1021/ic990483b"
- Description: Bis(substituted-2,3-naphthalocyaninato)europium(III) complexes: bis(octakis(dodecylthio)-2,3-naphthalocyaninato)europium(III) {Eu[2,3-Nc(SC12H25)8]2, 1} and bis(tetra-tert-butyl-2,3-naphthalocyaninato)europium(III) {Eu[2,3-Nc(t-Bu)4]2, 2} have been synthesized by cyclic tetramerization of naphthalonitriles with Eu(acac)3·H2O in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) in refluxing n-octanol. These compounds were characterized by UV−visible, magnetic circular dichroism (MCD), near-IR, IR, EPR, and mass spectroscopies. The absorption and MCD spectra of 1 showed splitting of the Q band, with peaks at 700 and 784 nm, red shifted from the Q band of 2 at 763 nm. The absorption and MCD spectral band deconvolution calculations of complex 1 gave two A terms in the Q-band region. The A terms are assigned to 2A2 → 2E1 transitions. Cyclic voltammograms of 1 and 2 showed reversible oxidation couples at E1/2 = −0.28 V (for 2) and −0.25 V (for 1) vs ferrocenium/ferrocene (Fc+/Fc). The second oxidation exhibited a complicated behavior for both complexes. The reduction couples for 2 were observed at E1/2 = −0.61, −1.64, −1.97, and −2.42 V, and for 1 they were observed at E1/2 = −0.62, −1.60, −1.86, and −2.27 V vs Fc+/Fc. Spectral changes observed on chemical oxidation and reduction of the complexes are presented, and the behaviors of 1 and 2 are compared.
- Full Text:
- Date Issued: 2000
- Authors: Nyokong, Tebello , Furuya, Fumio , Kobayashi, Nagao , Du, Daming , Liu, Wei , Jiang, Jianzhuang
- Date: 2000
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/293174 , vital:57062 , xlink:href="https://doi.org/10.1021/ic990483b"
- Description: Bis(substituted-2,3-naphthalocyaninato)europium(III) complexes: bis(octakis(dodecylthio)-2,3-naphthalocyaninato)europium(III) {Eu[2,3-Nc(SC12H25)8]2, 1} and bis(tetra-tert-butyl-2,3-naphthalocyaninato)europium(III) {Eu[2,3-Nc(t-Bu)4]2, 2} have been synthesized by cyclic tetramerization of naphthalonitriles with Eu(acac)3·H2O in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) in refluxing n-octanol. These compounds were characterized by UV−visible, magnetic circular dichroism (MCD), near-IR, IR, EPR, and mass spectroscopies. The absorption and MCD spectra of 1 showed splitting of the Q band, with peaks at 700 and 784 nm, red shifted from the Q band of 2 at 763 nm. The absorption and MCD spectral band deconvolution calculations of complex 1 gave two A terms in the Q-band region. The A terms are assigned to 2A2 → 2E1 transitions. Cyclic voltammograms of 1 and 2 showed reversible oxidation couples at E1/2 = −0.28 V (for 2) and −0.25 V (for 1) vs ferrocenium/ferrocene (Fc+/Fc). The second oxidation exhibited a complicated behavior for both complexes. The reduction couples for 2 were observed at E1/2 = −0.61, −1.64, −1.97, and −2.42 V, and for 1 they were observed at E1/2 = −0.62, −1.60, −1.86, and −2.27 V vs Fc+/Fc. Spectral changes observed on chemical oxidation and reduction of the complexes are presented, and the behaviors of 1 and 2 are compared.
- Full Text:
- Date Issued: 2000
Comparative study on the biological performance of progenies of Western Sanga x Afrikaner and Bonsmara cattle in the sourish mixed bushveld of the North West Province
- Authors: Moraka, Joseph Ntlhoki
- Date: 2000
- Subjects: Beef cattle breeds , Bonsmara cattle , Afrikaner cattle
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10947 , http://hdl.handle.net/10948/21 , Beef cattle breeds , Bonsmara cattle , Afrikaner cattle
- Description: The study compares the biological performance of progenies of the Afrikaner x Western Sanga crossbred (small frame) and the Bonsmara (medium frame) cattle on the following traits: calving and growth rates as well as mortalities. The study was conducted in the Sourish Mixed Bushveld of the North West province. The objective was to identify a lowcare cattle breed, which can withstand unfavourable conditions under which most farmers in the North West Province operate. The results of this study indicated that, under good management, the Bonsmara cattle have higher growth rates compared to the Sanga cattle. There were statistical differences with regards to birth, pre-wean and wean masses, (P< 0.0001). Sanga cattle however were able to maintain higher calving rates under all varying conditions (Bonsmara 77% average and Sanga 84% average). The Sanga, due to its lower nutritional requirements, on average requires 15% less of the surface area required by the Bonsmara. Sanga cattle also returned better yields in terms of kilogram weaned calf per LSU and per hectare. With regard to herd mortalities, there was no significant difference (P = 0.03329).
- Full Text:
- Date Issued: 2000
- Authors: Moraka, Joseph Ntlhoki
- Date: 2000
- Subjects: Beef cattle breeds , Bonsmara cattle , Afrikaner cattle
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10947 , http://hdl.handle.net/10948/21 , Beef cattle breeds , Bonsmara cattle , Afrikaner cattle
- Description: The study compares the biological performance of progenies of the Afrikaner x Western Sanga crossbred (small frame) and the Bonsmara (medium frame) cattle on the following traits: calving and growth rates as well as mortalities. The study was conducted in the Sourish Mixed Bushveld of the North West province. The objective was to identify a lowcare cattle breed, which can withstand unfavourable conditions under which most farmers in the North West Province operate. The results of this study indicated that, under good management, the Bonsmara cattle have higher growth rates compared to the Sanga cattle. There were statistical differences with regards to birth, pre-wean and wean masses, (P< 0.0001). Sanga cattle however were able to maintain higher calving rates under all varying conditions (Bonsmara 77% average and Sanga 84% average). The Sanga, due to its lower nutritional requirements, on average requires 15% less of the surface area required by the Bonsmara. Sanga cattle also returned better yields in terms of kilogram weaned calf per LSU and per hectare. With regard to herd mortalities, there was no significant difference (P = 0.03329).
- Full Text:
- Date Issued: 2000
Comparison of plant diversity in protected and communal lands in the Bushbuckridge lowveld savanna, South Africa
- Authors: Shackleton, Charlie M
- Date: 2000
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/181885 , vital:43777 , xlink:href="https://doi.org/10.1016/S0006-3207(00)00001-X"
- Description: Patterns of higher plant species richness and beta diversity were assessed using standard Modified-Whittaker plots in relation to land use, slope position and mean annual rainfall across a rainfall gradient in the savanna areas of the Bushbuckridge lowveld, South Africa. In particular, comparison of communal areas with adjacent protected areas was important in showing the impacts of potential changes in land use within an overarching catchment management plan. Although most of the protected areas considered preservation of biodiversity as their primary goal, they were characterised by significantly fewer plant species than the adjacent, highly utilised, communal lands, at both the plot and point scale. Slope position also had a significant effect on plant species richness, with eutrophic bottomlands having c. 30% more species than the dystrophic toplands. This adds weight to the need for greater public awareness for the judicious use and management of the sensitive bottomlands, which fringe the primary drainage lines that are vital for sustained supplies of good quality surface water in this semi-arid environment. The total number of species increased with increasing mean annual rainfall across the rainfall gradient. This suggests that, if the catchment management plan aims to identify additional areas for conservation, the higher rainfall areas should be the first to be assessed. Species turnover was greater along the rainfall gradient than the catenal gradient between toplands and bottomlands.
- Full Text:
- Date Issued: 2000
- Authors: Shackleton, Charlie M
- Date: 2000
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/181885 , vital:43777 , xlink:href="https://doi.org/10.1016/S0006-3207(00)00001-X"
- Description: Patterns of higher plant species richness and beta diversity were assessed using standard Modified-Whittaker plots in relation to land use, slope position and mean annual rainfall across a rainfall gradient in the savanna areas of the Bushbuckridge lowveld, South Africa. In particular, comparison of communal areas with adjacent protected areas was important in showing the impacts of potential changes in land use within an overarching catchment management plan. Although most of the protected areas considered preservation of biodiversity as their primary goal, they were characterised by significantly fewer plant species than the adjacent, highly utilised, communal lands, at both the plot and point scale. Slope position also had a significant effect on plant species richness, with eutrophic bottomlands having c. 30% more species than the dystrophic toplands. This adds weight to the need for greater public awareness for the judicious use and management of the sensitive bottomlands, which fringe the primary drainage lines that are vital for sustained supplies of good quality surface water in this semi-arid environment. The total number of species increased with increasing mean annual rainfall across the rainfall gradient. This suggests that, if the catchment management plan aims to identify additional areas for conservation, the higher rainfall areas should be the first to be assessed. Species turnover was greater along the rainfall gradient than the catenal gradient between toplands and bottomlands.
- Full Text:
- Date Issued: 2000
Computers in science teaching: a reality or dream; The role of computers in effective science education: a case of using a computer to teach colour mixing; Career oriented science education for the next millennium
- Authors: Nadarajah, Kumaravel
- Date: 2000
- Subjects: Science -- Study and teaching Computer-assisted instruction Education -- Data processing
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1460 , http://hdl.handle.net/10962/d1003341
- Description: Science education in South Africa is not improving much. Many science educators do not have appropriate science qualifications. Majority of the learners have limited facilities to learn science. In this dilemma the move to OBE may result in further substantial deterioration of science education. A possible way out is to use computers in science education to facilitate the learning process. This study was designed to investigate how computers contribute to learners’ skills development in a physics course. A series of interactive computer simulations of colour mixing and a number of closely related traditional practical activities are aimed to promote learners’ understanding of colour. It was concluded that while computer environments have greater potentialas learning tools, they also limit interactions in significant ways.
- Full Text:
- Date Issued: 2000
- Authors: Nadarajah, Kumaravel
- Date: 2000
- Subjects: Science -- Study and teaching Computer-assisted instruction Education -- Data processing
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1460 , http://hdl.handle.net/10962/d1003341
- Description: Science education in South Africa is not improving much. Many science educators do not have appropriate science qualifications. Majority of the learners have limited facilities to learn science. In this dilemma the move to OBE may result in further substantial deterioration of science education. A possible way out is to use computers in science education to facilitate the learning process. This study was designed to investigate how computers contribute to learners’ skills development in a physics course. A series of interactive computer simulations of colour mixing and a number of closely related traditional practical activities are aimed to promote learners’ understanding of colour. It was concluded that while computer environments have greater potentialas learning tools, they also limit interactions in significant ways.
- Full Text:
- Date Issued: 2000