Photochemically induced electron transfer between sulfur dioxide and tin (IV) mono-and di-phthalocyanines
- Nensala, Ngudiankama, Nzimande, Ayanda, Nyokong, Tebello
- Authors: Nensala, Ngudiankama , Nzimande, Ayanda , Nyokong, Tebello
- Date: 1996
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/293402 , vital:57082 , xlink:href="https://doi.org/10.1016/1010-6030(96)04344-4"
- Description: Photolysis, using radiation from a tungsten lamp, of tin diphthalocyanine (Pc2Sn(IV)) in dichloromethane containing SO2 results in the one-electron oxidation of this species to [Pc(−2)Sn(IV)Pc(−1)]+. The relative quantum yields for the formation of the oxidized species were in the order of 10−3. The one-electron oxidized complex was also formed when Pc2Sn was photolysed in an acetonitrile/dichloromethane solvent mixture. Photolysis of the monomeric (L)2Sn(IV)Pc(LOH−, Cl−, Br− and F−) in pyridine and in the presence of SO2 resulted in the reduction of these species to (L)2Sn(IV)Pc(−3)]− with quantum yields in the order of 10−2.
- Full Text:
- Date Issued: 1996
- Authors: Nensala, Ngudiankama , Nzimande, Ayanda , Nyokong, Tebello
- Date: 1996
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/293402 , vital:57082 , xlink:href="https://doi.org/10.1016/1010-6030(96)04344-4"
- Description: Photolysis, using radiation from a tungsten lamp, of tin diphthalocyanine (Pc2Sn(IV)) in dichloromethane containing SO2 results in the one-electron oxidation of this species to [Pc(−2)Sn(IV)Pc(−1)]+. The relative quantum yields for the formation of the oxidized species were in the order of 10−3. The one-electron oxidized complex was also formed when Pc2Sn was photolysed in an acetonitrile/dichloromethane solvent mixture. Photolysis of the monomeric (L)2Sn(IV)Pc(LOH−, Cl−, Br− and F−) in pyridine and in the presence of SO2 resulted in the reduction of these species to (L)2Sn(IV)Pc(−3)]− with quantum yields in the order of 10−2.
- Full Text:
- Date Issued: 1996
Profile on CWIU
- Chemical Workers Industrial Union (CWIU)
- Authors: Chemical Workers Industrial Union (CWIU)
- Date: 1996
- Subjects: CWIU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/170170 , vital:41864
- Description: Chemical Workers Industrial Union (GW1U) CW1U wus launched in November 1074 following a wuvo of strikes by workers in Durban, who wero demanding bettor wages. During those dark yours when repression wus at its highest peak, workers hud no hade unions to assist them. In chemical, transport, textile and .paper industries, workers formed trade unions to take their struggle forward. They also formed a tight .federation, the Trade Union Advisory and Co-ordinating Committee (TUACC). At its launch in 1974, CWIU was concentrated in Durban and had just under 1 000 members. In July 1980, a branch was opened in the "old” Transvaal. In building a national union, CWIU merged with Glass and Allied Workers Union (Gawu) in 1982. In the interim, other branches where launched throughout the country, though it was easy task with security cops keeping surveillance on every movement of union officials. To build a stronger united worker-front, CWIU took quantum leap when it merged again with Plastics and Allied Workers Union in 1986.
- Full Text:
- Date Issued: 1996
- Authors: Chemical Workers Industrial Union (CWIU)
- Date: 1996
- Subjects: CWIU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/170170 , vital:41864
- Description: Chemical Workers Industrial Union (GW1U) CW1U wus launched in November 1074 following a wuvo of strikes by workers in Durban, who wero demanding bettor wages. During those dark yours when repression wus at its highest peak, workers hud no hade unions to assist them. In chemical, transport, textile and .paper industries, workers formed trade unions to take their struggle forward. They also formed a tight .federation, the Trade Union Advisory and Co-ordinating Committee (TUACC). At its launch in 1974, CWIU was concentrated in Durban and had just under 1 000 members. In July 1980, a branch was opened in the "old” Transvaal. In building a national union, CWIU merged with Glass and Allied Workers Union (Gawu) in 1982. In the interim, other branches where launched throughout the country, though it was easy task with security cops keeping surveillance on every movement of union officials. To build a stronger united worker-front, CWIU took quantum leap when it merged again with Plastics and Allied Workers Union in 1986.
- Full Text:
- Date Issued: 1996
Rhodes University Graduation Ceremony 1996
- Authors: Rhodes University
- Date: 1996
- Language: English
- Type: text
- Identifier: vital:8130 , http://hdl.handle.net/10962/d1006774
- Description: Rhodes University 1996 Graduation Ceremony 5 Jagersfontein Lane, Oranjezicht, Cape Town, Wednesday, 27 March at 12.00 p.m. , Rhodes University 1996 Graduation Ceremonies [at] 1820 Settlers National Monument Friday, 12 April at 10:30 a.m.; 08:15 p.m. [and] Saturday, 13 April at 10:30 a.m. , Rhodes University 1996 Graduation Ceremony Quigney Baptist Church Saturday, 11 May at 11:00 a.m. , Inauguration Ceremony Dr David Randle Woods Principal and Vice-Chancellor, 1820 Settlers National Monument Friday, 30 August 1996 at 6:30 p.m.
- Full Text:
- Date Issued: 1996
- Authors: Rhodes University
- Date: 1996
- Language: English
- Type: text
- Identifier: vital:8130 , http://hdl.handle.net/10962/d1006774
- Description: Rhodes University 1996 Graduation Ceremony 5 Jagersfontein Lane, Oranjezicht, Cape Town, Wednesday, 27 March at 12.00 p.m. , Rhodes University 1996 Graduation Ceremonies [at] 1820 Settlers National Monument Friday, 12 April at 10:30 a.m.; 08:15 p.m. [and] Saturday, 13 April at 10:30 a.m. , Rhodes University 1996 Graduation Ceremony Quigney Baptist Church Saturday, 11 May at 11:00 a.m. , Inauguration Ceremony Dr David Randle Woods Principal and Vice-Chancellor, 1820 Settlers National Monument Friday, 30 August 1996 at 6:30 p.m.
- Full Text:
- Date Issued: 1996
Role of percutaneous penetration enhancers
- Walker, Roderick B, Smith, Eric W
- Authors: Walker, Roderick B , Smith, Eric W
- Date: 1996
- Language: English
- Type: text , Article
- Identifier: vital:6446 , http://hdl.handle.net/10962/d1006633
- Description: It is clear that scientists are now only beginning to comprehend the complexity of transdermal drug delivery. Elucidation of the biochemical composition and functioning of the intrinsic diffusional barrier of the stratum corneum has prompted investigation of chemical and physical means of enhancing the percutaneous penetration of poorly absorbed drugs. Chemical enhancers that aid absorption of co-administered moieties are currently believed to improve solubility within the stratum corneum or increase lipid fluidity of the intracellular bilayers. Alternatively,the use of ionto- or phonophoresis may facilitate the absorption of some drug molecules by physical alteration of the barrier. The role of penetration enhancer inclusion in topical formulations has been well documented and will undoubtedly, in the future, permit the delivery of broader classes of drugs through the stratum corneum.
- Full Text:
- Date Issued: 1996
- Authors: Walker, Roderick B , Smith, Eric W
- Date: 1996
- Language: English
- Type: text , Article
- Identifier: vital:6446 , http://hdl.handle.net/10962/d1006633
- Description: It is clear that scientists are now only beginning to comprehend the complexity of transdermal drug delivery. Elucidation of the biochemical composition and functioning of the intrinsic diffusional barrier of the stratum corneum has prompted investigation of chemical and physical means of enhancing the percutaneous penetration of poorly absorbed drugs. Chemical enhancers that aid absorption of co-administered moieties are currently believed to improve solubility within the stratum corneum or increase lipid fluidity of the intracellular bilayers. Alternatively,the use of ionto- or phonophoresis may facilitate the absorption of some drug molecules by physical alteration of the barrier. The role of penetration enhancer inclusion in topical formulations has been well documented and will undoubtedly, in the future, permit the delivery of broader classes of drugs through the stratum corneum.
- Full Text:
- Date Issued: 1996
SADTU's Major three year capacity building programme
- SADTU
- Authors: SADTU
- Date: 1996
- Subjects: SADTU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/134593 , vital:37180
- Description: SADTU has planned to launch a major capacity building programme in 1996. SADTU is a young union. Formed in 1990 as the only non-racial, non-sexist and democratic teachers’ union in South Africa, SADTU was viewed as a champion of teacher rights and thus the ideal organisation to campaign for transformative change. Consequently there was a significant shift of membership from established teacher associations. SADTU grasped this initiative and was able to earn an enviable position in educational struggles. The Union’s tremendous growth in size however has meant more responsibility at all organisational levels. Teachers’ demands and expectations have increased in the post apartheid era. Also the demands of educational reconstruction have become more complex. The country’s constitution and the new political demarcations have necessitated a realignment of our structures. The creation of nine provincial education departments with concurrent powers with the National Ministry of Education has introduced still more challenges for the Union. SADTU is now faced with the task of co-ordinating its activities at five levels, namely: National, Provincial, Regional, Branch and Site.
- Full Text:
- Date Issued: 1996
- Authors: SADTU
- Date: 1996
- Subjects: SADTU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/134593 , vital:37180
- Description: SADTU has planned to launch a major capacity building programme in 1996. SADTU is a young union. Formed in 1990 as the only non-racial, non-sexist and democratic teachers’ union in South Africa, SADTU was viewed as a champion of teacher rights and thus the ideal organisation to campaign for transformative change. Consequently there was a significant shift of membership from established teacher associations. SADTU grasped this initiative and was able to earn an enviable position in educational struggles. The Union’s tremendous growth in size however has meant more responsibility at all organisational levels. Teachers’ demands and expectations have increased in the post apartheid era. Also the demands of educational reconstruction have become more complex. The country’s constitution and the new political demarcations have necessitated a realignment of our structures. The creation of nine provincial education departments with concurrent powers with the National Ministry of Education has introduced still more challenges for the Union. SADTU is now faced with the task of co-ordinating its activities at five levels, namely: National, Provincial, Regional, Branch and Site.
- Full Text:
- Date Issued: 1996
Spectroelectrochemical studies of tin (IV) diphthalocyanine
- Nensala, Ngudiankama, Nyokong, Tebello
- Authors: Nensala, Ngudiankama , Nyokong, Tebello
- Date: 1996
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/293436 , vital:57085 , xlink:href="https://doi.org/10.1016/0277-5387(95)00325-1"
- Description: Cyclic voltammetry of tin(IV) diphthalocyanine (Pc2Sn) in dichloromethane containing TEAP shows two reduction couples at −0.56 and −0.89 versus saturated calomel electrode (SCE) and one oxidation couple at 0.35 V versus SCE; all were quasireversible one-electron couples. The oxidation couple corresponds to [Pc(−1)SnIVPc(−2)+/Pc(−2)SnIVPc(−2) and the reduction couples to Pc(−2)SnIVPc(−2)/[Pc(−3)SnIVPc(−2)]− and [Pc(−3)SnIVPc(−2)]−/[Pc(−3)SnIVPc(−3)]2−, respectively. The electronic absorption spectra of the various reduced or oxidized tin(IV) diphthalocyanine species are reported.
- Full Text:
- Date Issued: 1996
- Authors: Nensala, Ngudiankama , Nyokong, Tebello
- Date: 1996
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/293436 , vital:57085 , xlink:href="https://doi.org/10.1016/0277-5387(95)00325-1"
- Description: Cyclic voltammetry of tin(IV) diphthalocyanine (Pc2Sn) in dichloromethane containing TEAP shows two reduction couples at −0.56 and −0.89 versus saturated calomel electrode (SCE) and one oxidation couple at 0.35 V versus SCE; all were quasireversible one-electron couples. The oxidation couple corresponds to [Pc(−1)SnIVPc(−2)+/Pc(−2)SnIVPc(−2) and the reduction couples to Pc(−2)SnIVPc(−2)/[Pc(−3)SnIVPc(−2)]− and [Pc(−3)SnIVPc(−2)]−/[Pc(−3)SnIVPc(−3)]2−, respectively. The electronic absorption spectra of the various reduced or oxidized tin(IV) diphthalocyanine species are reported.
- Full Text:
- Date Issued: 1996
Suppositories: An underutilized dosage form
- Webster, Jessica A, Dowse, Roslind, Walker, Roderick B
- Authors: Webster, Jessica A , Dowse, Roslind , Walker, Roderick B
- Date: 1996
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/184697 , vital:44264 , xlink:href="https://hdl.handle.net/10520/AJA16836707_911"
- Description: The rectal route is useful for the delivery of both local acting and systemic drugs. In certain cases suppositories are the best form of therapy, or else they are an effective alternative when oral therapy is not possible. However; doctors rarely prescribe them and patients are often reluctant to use them. Understanding how suppositories work, and their numerous uses, can overcome the aversion to this particular dosage form. Pharmacists are in an ideal position to educate doctors, other health care providers, and patients, on the benefits of using suppositories and their correct use, and to offer advice on any problems associated with their use.
- Full Text:
- Date Issued: 1996
- Authors: Webster, Jessica A , Dowse, Roslind , Walker, Roderick B
- Date: 1996
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/184697 , vital:44264 , xlink:href="https://hdl.handle.net/10520/AJA16836707_911"
- Description: The rectal route is useful for the delivery of both local acting and systemic drugs. In certain cases suppositories are the best form of therapy, or else they are an effective alternative when oral therapy is not possible. However; doctors rarely prescribe them and patients are often reluctant to use them. Understanding how suppositories work, and their numerous uses, can overcome the aversion to this particular dosage form. Pharmacists are in an ideal position to educate doctors, other health care providers, and patients, on the benefits of using suppositories and their correct use, and to offer advice on any problems associated with their use.
- Full Text:
- Date Issued: 1996
The future role of TGWU in relation to Bus Transport in a changing environment
- TGWU
- Authors: TGWU
- Date: 1996
- Subjects: TGWU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/111258 , vital:33425
- Description: One will assume that the topic chosen for me to present a paper on,is no the one which looks on organisational and analytic development of TGWU. I will therefore focus on TGWU 's perspective on the current bus crisis future perspective and TGWU organisational role in the bus industry I felt it important to outline a brief background and our perspective cm the industry and how that dictates our attitude towards the industry. This paper is divided along the following sections;- Use of transport in internal economic and labour control. Contradictions and conflicts over transport policy. The future and its implications for Transport policy after apartheid. TGWU's organisational role and influence in the industry.
- Full Text:
- Date Issued: 1996
- Authors: TGWU
- Date: 1996
- Subjects: TGWU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/111258 , vital:33425
- Description: One will assume that the topic chosen for me to present a paper on,is no the one which looks on organisational and analytic development of TGWU. I will therefore focus on TGWU 's perspective on the current bus crisis future perspective and TGWU organisational role in the bus industry I felt it important to outline a brief background and our perspective cm the industry and how that dictates our attitude towards the industry. This paper is divided along the following sections;- Use of transport in internal economic and labour control. Contradictions and conflicts over transport policy. The future and its implications for Transport policy after apartheid. TGWU's organisational role and influence in the industry.
- Full Text:
- Date Issued: 1996
The manufacture of chaos and compromise: an analysis of the path to reform in South Africa
- Authors: Ryklief, Cheryl Cecelia
- Date: 1996
- Subjects: South Africa -- Politics and government -- 1994- , Apartheid -- South Africa -- History , South Africa -- Race relations , Black people -- South Africa -- Politics and government , South Africa -- Social conditions
- Language: English
- Type: text , thesis
- Identifier: http://hdl.handle.net/10962/76218 , vital:30521
- Description: This dissertation examines the factors leading to the opening of negotiations to majority rule in South Africa. It argues that changes to the socio-economic environment led to the growth of the strategic relevance of the black working class, and also created certain points of collision between the black working class and the policies of the state. These sectoral collisions engendered both the partial reforms of the Botha era as well as the rejection of these reforms by the black majority. The developments that emerged from the ensuing process of reform, resistance and repression in the 1980s weakened both the state and the black opposition sufficiently to allow for the emergence of a consensual solution to the political stalemate. , Dissertation submitted in accordance with the requirements of the University of Liverpool for the degree of Master of Arts
- Full Text:
- Date Issued: 1996
- Authors: Ryklief, Cheryl Cecelia
- Date: 1996
- Subjects: South Africa -- Politics and government -- 1994- , Apartheid -- South Africa -- History , South Africa -- Race relations , Black people -- South Africa -- Politics and government , South Africa -- Social conditions
- Language: English
- Type: text , thesis
- Identifier: http://hdl.handle.net/10962/76218 , vital:30521
- Description: This dissertation examines the factors leading to the opening of negotiations to majority rule in South Africa. It argues that changes to the socio-economic environment led to the growth of the strategic relevance of the black working class, and also created certain points of collision between the black working class and the policies of the state. These sectoral collisions engendered both the partial reforms of the Botha era as well as the rejection of these reforms by the black majority. The developments that emerged from the ensuing process of reform, resistance and repression in the 1980s weakened both the state and the black opposition sufficiently to allow for the emergence of a consensual solution to the political stalemate. , Dissertation submitted in accordance with the requirements of the University of Liverpool for the degree of Master of Arts
- Full Text:
- Date Issued: 1996
Up Beat Issue Number 11 1994/5
- SACHED
- Authors: SACHED
- Date: 1996
- Subjects: SACHED
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/115981 , vital:34285
- Description: It's the end of a big year for all South Africans. April saw all of us rejoice and celebrate as Nelson Mandela became the first president of a free South Africa. But it has also been a difficult year. 'What's the use of freedom if our daily lives are ruled by guns?' This issue is explored in our feature 'Guns - what's to be done?' on page 4. But the youth of our country continue to believe in the future. Read about how young people in Wattville, are using their talents to brighten up their own neighbourhood on page 30. Now it's holiday time and Upbeat is packed with fun reading, games and lots of information on great holiday reads. So put up your feet and enjoy your well earned break. We wish all of you a happy and peaceful holiday. Thank- you for your support in 1994.
- Full Text:
- Date Issued: 1996
- Authors: SACHED
- Date: 1996
- Subjects: SACHED
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/115981 , vital:34285
- Description: It's the end of a big year for all South Africans. April saw all of us rejoice and celebrate as Nelson Mandela became the first president of a free South Africa. But it has also been a difficult year. 'What's the use of freedom if our daily lives are ruled by guns?' This issue is explored in our feature 'Guns - what's to be done?' on page 4. But the youth of our country continue to believe in the future. Read about how young people in Wattville, are using their talents to brighten up their own neighbourhood on page 30. Now it's holiday time and Upbeat is packed with fun reading, games and lots of information on great holiday reads. So put up your feet and enjoy your well earned break. We wish all of you a happy and peaceful holiday. Thank- you for your support in 1994.
- Full Text:
- Date Issued: 1996
Up Beat Issue Number 3 1995
- SACHED
- Authors: SACHED
- Date: 1996
- Subjects: SACHED
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/116089 , vital:34296
- Description: Where is Maputaland? It is in Northern Kwazulu/Natal. For many years, the government ignored far away places like Maputaland. The roads are terrible and there are few buses. People must walk a very long way to get to a clinic or a shop. The people of Maputaland wanted to solve their transport problem. So they got together with the Khuphuka Skills Training and Employment Programme. Khuphuka is training local people to build drains, roads and bridges. In the Ingwavume and KwaNgwanase districts, 36 young men and women are training to be team leaders. While they work, they are being taught all about how to build roads. When they graduate from the course, they will supervise other trainees. The project is part of the Reconstruction and Development Programme and is co-ordinated by the Department of Public Works.
- Full Text:
- Date Issued: 1996
- Authors: SACHED
- Date: 1996
- Subjects: SACHED
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/116089 , vital:34296
- Description: Where is Maputaland? It is in Northern Kwazulu/Natal. For many years, the government ignored far away places like Maputaland. The roads are terrible and there are few buses. People must walk a very long way to get to a clinic or a shop. The people of Maputaland wanted to solve their transport problem. So they got together with the Khuphuka Skills Training and Employment Programme. Khuphuka is training local people to build drains, roads and bridges. In the Ingwavume and KwaNgwanase districts, 36 young men and women are training to be team leaders. While they work, they are being taught all about how to build roads. When they graduate from the course, they will supervise other trainees. The project is part of the Reconstruction and Development Programme and is co-ordinated by the Department of Public Works.
- Full Text:
- Date Issued: 1996
Up Beat Issue Number 6 1992
- SACHED
- Authors: SACHED
- Date: 1996
- Subjects: SACHED
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/116270 , vital:34349
- Description: The two-hour drive from Cape Town to Worcester is long. But it’s not boring. You pass green, open farmlands where cattle graze. Every now and then, you cross a river or a stream. In the distance, the purple mountains frame the blue sky. Bree River High School In the valley surrounded by the Hottentots-Holland mountains, you find Worcester. Just outside the town is Bree River High School. Wilfred Zebedezela is a student there. He throws the shotput. He lives on a farm outside Worcester and he travels for an hour everyday to get to and from school. ‘At school there isn’t a place where I can train with weights, said Wilfred. ‘So I build my muscles by doing farm work. I would like to practice shotput at home, but I can’t because there is only one shotput at school. I can’t practise at school, as there is no teacher to stay behind in the afternoons with me.’ Ruduwaan Visagie is a 200 metre sprinter. ‘We can’t afford things like starting blocks. We ran in the South African Junior Athletics Championships. But some of our athletes almost couldn't take part. We didn’t have starting blocks. Fortunately, we managed to borrow some.’
- Full Text:
- Date Issued: 1996
- Authors: SACHED
- Date: 1996
- Subjects: SACHED
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/116270 , vital:34349
- Description: The two-hour drive from Cape Town to Worcester is long. But it’s not boring. You pass green, open farmlands where cattle graze. Every now and then, you cross a river or a stream. In the distance, the purple mountains frame the blue sky. Bree River High School In the valley surrounded by the Hottentots-Holland mountains, you find Worcester. Just outside the town is Bree River High School. Wilfred Zebedezela is a student there. He throws the shotput. He lives on a farm outside Worcester and he travels for an hour everyday to get to and from school. ‘At school there isn’t a place where I can train with weights, said Wilfred. ‘So I build my muscles by doing farm work. I would like to practice shotput at home, but I can’t because there is only one shotput at school. I can’t practise at school, as there is no teacher to stay behind in the afternoons with me.’ Ruduwaan Visagie is a 200 metre sprinter. ‘We can’t afford things like starting blocks. We ran in the South African Junior Athletics Championships. But some of our athletes almost couldn't take part. We didn’t have starting blocks. Fortunately, we managed to borrow some.’
- Full Text:
- Date Issued: 1996