Zinc (II) 2, 9, 16, 23-tetrakis [4-(N-methylpyridyloxy)]-phthalocyanine anchored on an electrospun polysulfone polymer fiber: Application for photosensitized conversion of methyl orange
- Zugle, Ruphino, Nyokong, Tebello
- Authors: Zugle, Ruphino , Nyokong, Tebello
- Date: 2013
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/232741 , vital:50020 , xlink:href="https://doi.org/10.1016/j.molcata.2012.10.001"
- Description: In this work, a comparative study of photodegradation of methyl orange, an azo dye, in homogeneous aqueous solution of a quarternized cationic zinc phthalocyanine and a heterogeneous catalytic system based on the same phthalocyanine anchored on polysulfone polymer fiber is presented. In both cases, conversion involved the azo bond of the dye with no detectable opening up of the aromatic benzene rings. The reaction kinetics in both cases were consistent with first order with the conversion occurring in the homogeneous system being faster than when the functionalized polymer fiber was used. The reaction products consisted of a coupling product as well as a series of oligopolymeric products.
- Full Text:
- Date Issued: 2013
- Authors: Zugle, Ruphino , Nyokong, Tebello
- Date: 2013
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/232741 , vital:50020 , xlink:href="https://doi.org/10.1016/j.molcata.2012.10.001"
- Description: In this work, a comparative study of photodegradation of methyl orange, an azo dye, in homogeneous aqueous solution of a quarternized cationic zinc phthalocyanine and a heterogeneous catalytic system based on the same phthalocyanine anchored on polysulfone polymer fiber is presented. In both cases, conversion involved the azo bond of the dye with no detectable opening up of the aromatic benzene rings. The reaction kinetics in both cases were consistent with first order with the conversion occurring in the homogeneous system being faster than when the functionalized polymer fiber was used. The reaction products consisted of a coupling product as well as a series of oligopolymeric products.
- Full Text:
- Date Issued: 2013
‘Growing’ social protection in developing countries: lessons from Brazil and South Africa
- Barrientos, Armando, Moller, Valerie, Saboia, Joao, Lloyd-Sherlock, Peter, Mase, Julia
- Authors: Barrientos, Armando , Moller, Valerie , Saboia, Joao , Lloyd-Sherlock, Peter , Mase, Julia
- Date: 2013
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/67195 , vital:29058 , https://doi.org/10.1080/0376835X.2013.756098
- Description: publisher version , The rapid expansion of social protection in the South provides a rich diversity of experiences and lessons on how best to reduce poverty and ultimately eradicate it. Knowledge on how best to ‘grow’ social assistance, understood as long-term institutions responsible for reducing and preventing poverty, is at a premium. This article examines the expansion of social assistance in Brazil and South Africa, two of the middle income countries widely perceived to have advanced furthest in ‘growing’ social protection. It examines three aspects: the primacy of politics in explaining the expansion of social protection and assistance, the tensions between path-dependence and innovation in terms of institutions and practices, and the poverty and inequality outcomes of social assistance expansion. The article concludes by drawing the main lessons for other developing countries.
- Full Text: false
- Date Issued: 2013
- Authors: Barrientos, Armando , Moller, Valerie , Saboia, Joao , Lloyd-Sherlock, Peter , Mase, Julia
- Date: 2013
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/67195 , vital:29058 , https://doi.org/10.1080/0376835X.2013.756098
- Description: publisher version , The rapid expansion of social protection in the South provides a rich diversity of experiences and lessons on how best to reduce poverty and ultimately eradicate it. Knowledge on how best to ‘grow’ social assistance, understood as long-term institutions responsible for reducing and preventing poverty, is at a premium. This article examines the expansion of social assistance in Brazil and South Africa, two of the middle income countries widely perceived to have advanced furthest in ‘growing’ social protection. It examines three aspects: the primacy of politics in explaining the expansion of social protection and assistance, the tensions between path-dependence and innovation in terms of institutions and practices, and the poverty and inequality outcomes of social assistance expansion. The article concludes by drawing the main lessons for other developing countries.
- Full Text: false
- Date Issued: 2013
“A road that may lead nowhere”: JM Coetzee, Tayeb Salih, and the Hospitality of Vagrant Writing
- Authors: Marais, Mike
- Date: 2013
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/144072 , vital:38308 , https://dialnet.unirioja.es/servlet/articulo?codigo=4568814
- Description: In this article, I argue that Coetzee's writing, being alienated from history but unable to transcend it, is forced to treat its own representations with a measure of suspicion. By extension, the Coetzee text is always divided against itself. It is, in the idiom of hospitality, never quite at home with itself because it is aware that home is premised on exclusion, on the existence of an outsider, one for whom home is not a home.
- Full Text:
- Date Issued: 2013
- Authors: Marais, Mike
- Date: 2013
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/144072 , vital:38308 , https://dialnet.unirioja.es/servlet/articulo?codigo=4568814
- Description: In this article, I argue that Coetzee's writing, being alienated from history but unable to transcend it, is forced to treat its own representations with a measure of suspicion. By extension, the Coetzee text is always divided against itself. It is, in the idiom of hospitality, never quite at home with itself because it is aware that home is premised on exclusion, on the existence of an outsider, one for whom home is not a home.
- Full Text:
- Date Issued: 2013
“As soon as the four sides are all equal, then the angles must be 90° each”: children's misconceptions in geometry
- Atebe, Humphrey U, Schäfer, Marc
- Authors: Atebe, Humphrey U , Schäfer, Marc
- Date: 2013
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/140983 , vital:37934 , DOI: 10.1080/10288457.2008.10740634
- Description: This study describes Nigerian and South African students' conceptual understanding in high school geometry based on the van Hiele model of geometric thinking levels. The study further highlights students' misconceptions in school geometry. Concepts of triangles and quadrilaterals were investigated among 36 mathematics learners drawn from grades 10 through 12 who participated in this study. The tasks included identifying and naming shapes, sorting of shapes, stating the properties of shapes, defining of shapes and establishing class inclusions of shapes. The results indicated that many Nigerian and South African high school learners in Grade 10, 11 and 12 hold a number of misconceptions about geometric concepts of triangles and quadrilaterals.
- Full Text:
- Date Issued: 2013
- Authors: Atebe, Humphrey U , Schäfer, Marc
- Date: 2013
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/140983 , vital:37934 , DOI: 10.1080/10288457.2008.10740634
- Description: This study describes Nigerian and South African students' conceptual understanding in high school geometry based on the van Hiele model of geometric thinking levels. The study further highlights students' misconceptions in school geometry. Concepts of triangles and quadrilaterals were investigated among 36 mathematics learners drawn from grades 10 through 12 who participated in this study. The tasks included identifying and naming shapes, sorting of shapes, stating the properties of shapes, defining of shapes and establishing class inclusions of shapes. The results indicated that many Nigerian and South African high school learners in Grade 10, 11 and 12 hold a number of misconceptions about geometric concepts of triangles and quadrilaterals.
- Full Text:
- Date Issued: 2013
“Face the music!”: the Daily Sun's representation of adolescent sex in the Jules High sex scandal
- Boshoff, Priscilla A, Prinsloo, Jeanne
- Authors: Boshoff, Priscilla A , Prinsloo, Jeanne
- Date: 2013
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/143483 , vital:38250 , DOI: 10.1080/10130950.2013.834660
- Description: Rather than being merely a physiological stage, adolescence is variously constructed through social institutions. The media plays a significant role in such constructions, including that of adolescent sexuality. In the recent past there have been several cases of sexual acts involving adolescents that have received prominent media coverage as they have been considered shocking. The Jules High School sex scandal related to sex acts between a single adolescent girl and two adolescent boys. It was recorded on mobile phones by their peers and circulated on their mobile networks, or ‘went viral’ as the media continuously noted. The press coverage surrounding this incident and the legal process that ensued is the focus of this Article which undertakes a critical textual analysis of the coverage in the popular tabloid, the Daily Sun, in order to make explicit the contesting sets of discourses around adolescence and sexuality that were articulated in this popular public sphere. The Article uses a Foucauldian framework in order to probe the discourses of sexuality that are articulated and contested in this space. As the most widely read newspaper in South Africa it serves as a powerful site of definition of teen sexuality. The analysis suggests that, rather than allowing for teen sexuality, it is disavowed by villainising teen sex and responsibility for such ‘deviance’ is directed to various adult and social adult actors.
- Full Text:
- Date Issued: 2013
- Authors: Boshoff, Priscilla A , Prinsloo, Jeanne
- Date: 2013
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/143483 , vital:38250 , DOI: 10.1080/10130950.2013.834660
- Description: Rather than being merely a physiological stage, adolescence is variously constructed through social institutions. The media plays a significant role in such constructions, including that of adolescent sexuality. In the recent past there have been several cases of sexual acts involving adolescents that have received prominent media coverage as they have been considered shocking. The Jules High School sex scandal related to sex acts between a single adolescent girl and two adolescent boys. It was recorded on mobile phones by their peers and circulated on their mobile networks, or ‘went viral’ as the media continuously noted. The press coverage surrounding this incident and the legal process that ensued is the focus of this Article which undertakes a critical textual analysis of the coverage in the popular tabloid, the Daily Sun, in order to make explicit the contesting sets of discourses around adolescence and sexuality that were articulated in this popular public sphere. The Article uses a Foucauldian framework in order to probe the discourses of sexuality that are articulated and contested in this space. As the most widely read newspaper in South Africa it serves as a powerful site of definition of teen sexuality. The analysis suggests that, rather than allowing for teen sexuality, it is disavowed by villainising teen sex and responsibility for such ‘deviance’ is directed to various adult and social adult actors.
- Full Text:
- Date Issued: 2013
“It’s like uprooting trees”: responsive treatment for a case of complex post-traumatic stress disorder following multiple rapes
- Van der Linde, Francois, Edwards, David J A
- Authors: Van der Linde, Francois , Edwards, David J A
- Date: 2013
- Language: English
- Type: Article
- Identifier: vital:6238 , http://hdl.handle.net/10962/d1007788
- Description: This systematic case study documents 27 sessions of assessment and treatment with cognitive therapy of Bongi (23)who presented with major depression, posttraumatic stress disorder and borderline traits. Bongi had been raised in a punitive environment, had been raped three times, the first time at age 9, and had been in a series of abusive relationships. The treatment illustrates the importance of therapist responsiveness in addressing this kind of complex presentation, the importance of drawing on case formulation to guide the course of treatment and the range of different interventions that need to be incorporated into an integrative treatment of a complex case. Self-report measures of depression, anxiety and posttraumatic stress indicators provided evidence that the therapy contributed to positive changes and the qualitative therapy narrative gives details of the nature of some of those changes. Although treatment was not complete when Bongi moved away, Bongi herself judged that the therapy had been a valuable experience which had resulted in her feeling more alive, more confident, and better able to take care of herself.
- Full Text:
- Date Issued: 2013
- Authors: Van der Linde, Francois , Edwards, David J A
- Date: 2013
- Language: English
- Type: Article
- Identifier: vital:6238 , http://hdl.handle.net/10962/d1007788
- Description: This systematic case study documents 27 sessions of assessment and treatment with cognitive therapy of Bongi (23)who presented with major depression, posttraumatic stress disorder and borderline traits. Bongi had been raised in a punitive environment, had been raped three times, the first time at age 9, and had been in a series of abusive relationships. The treatment illustrates the importance of therapist responsiveness in addressing this kind of complex presentation, the importance of drawing on case formulation to guide the course of treatment and the range of different interventions that need to be incorporated into an integrative treatment of a complex case. Self-report measures of depression, anxiety and posttraumatic stress indicators provided evidence that the therapy contributed to positive changes and the qualitative therapy narrative gives details of the nature of some of those changes. Although treatment was not complete when Bongi moved away, Bongi herself judged that the therapy had been a valuable experience which had resulted in her feeling more alive, more confident, and better able to take care of herself.
- Full Text:
- Date Issued: 2013