Fluorescence Behaviour of an Aluminium Octacarboxy Phthalocyanine - NaYGdF4:Yb/Er Nanoparticle Conjugate
- Taylor, Jessica, Litwinski, Christian, Nyokong, Tebello, Antunes, Edith M
- Authors: Taylor, Jessica , Litwinski, Christian , Nyokong, Tebello , Antunes, Edith M
- Language: English
- Type: Article
- Identifier: vital:7247 , http://hdl.handle.net/10962/d1020252
- Description: Using a methanol assisted thermal decomposition approach, sphere shaped NaYGdF4:Yb/Er upconversion nanoparticles (UCNPs) were successfully synthesized. The chemical, spectroscopic and fluorescence properties of the UCNPs were fully characterized. Characteristic upconversion fluorescence emissions were produced by the NPs in the green, red and NIR regions and the NPs were also shown to possess paramagnetic properties. The influence of the UCNPs on the spectroscopic and fluorescence properties of an aluminium octacarboxy phthalocyanine AlOCPc was investigated. Covalent conjugation to an AlOCPc resulted in a large blue shift of the phthalocyanine’s Q band, which was accompanied by a decrease in the Pc’s fluorescence lifetime in DMSO. By combining the phthalocyanine and upconversion nanoparticle, we present a system capable of multimodal imaging, using both the upconversion nanoparticle’s and phthalocyanine’s emission, and magnetic resonance imaging (as a result of doping the upconversion nanoparticles with Gd3+ ions). , Original publication is available at http://dx.doi.org/10.1007/s10895-015-1539-8
- Full Text: false
- Authors: Taylor, Jessica , Litwinski, Christian , Nyokong, Tebello , Antunes, Edith M
- Language: English
- Type: Article
- Identifier: vital:7247 , http://hdl.handle.net/10962/d1020252
- Description: Using a methanol assisted thermal decomposition approach, sphere shaped NaYGdF4:Yb/Er upconversion nanoparticles (UCNPs) were successfully synthesized. The chemical, spectroscopic and fluorescence properties of the UCNPs were fully characterized. Characteristic upconversion fluorescence emissions were produced by the NPs in the green, red and NIR regions and the NPs were also shown to possess paramagnetic properties. The influence of the UCNPs on the spectroscopic and fluorescence properties of an aluminium octacarboxy phthalocyanine AlOCPc was investigated. Covalent conjugation to an AlOCPc resulted in a large blue shift of the phthalocyanine’s Q band, which was accompanied by a decrease in the Pc’s fluorescence lifetime in DMSO. By combining the phthalocyanine and upconversion nanoparticle, we present a system capable of multimodal imaging, using both the upconversion nanoparticle’s and phthalocyanine’s emission, and magnetic resonance imaging (as a result of doping the upconversion nanoparticles with Gd3+ ions). , Original publication is available at http://dx.doi.org/10.1007/s10895-015-1539-8
- Full Text: false
Food for us: reducing food waste, supporting social learning, creating value
- Lotz-Sisitka, Heila, Ward, Mike, Jenkin, Nicola P, Tantsi, Thato
- Authors: Lotz-Sisitka, Heila , Ward, Mike , Jenkin, Nicola P , Tantsi, Thato
- Subjects: Environmental education -- South Africa , Environmental education -- Study and teaching -- South Africa
- Language: English
- Type: Instructional and educational works , text
- Identifier: http://hdl.handle.net/10962/70859 , vital:29754 , 978-0-620-82216-9 , https://doi.org/10.21504/10962/70859
- Description: An estimated third of the 29 million tons of food produced annually in South Africa goes to waste (Oelofse, 2014). Fifty percent of this waste (by mass) occurs during the agricultural production and post-harvest handling and storage stages (von Bormann et al., 2017). At the same time 13 million South Africans routinely experience hunger, with malnutrition a serious concern for early childhood development (StatsSA, 2018). This disconnect between the need for food and the food that is available for consumption but being wasted, has profound social, environmental and economic impacts. This, in turn, suggests that there must be opportunities to create social, environmental and economic value through innovative and transformative initiatives that link food producers with food consumers in South Africa, particularly those in need. Food for Us is a sustainable food systems mobile phone learning pilot project initiated in 2017 by a consortium of partners in South Africa working with the United Nations (UN) Sustainable Lifestyles and Education Programme within the One Planet Network. The intention was to design and develop a mobile application (app) that could help reduce on-farm food surplus, while also supporting social learning. The initial phase of the project was 18 months. This publication shares what has been learned and can also be considered a springboard for the potential that is possible.
- Full Text:
- Authors: Lotz-Sisitka, Heila , Ward, Mike , Jenkin, Nicola P , Tantsi, Thato
- Subjects: Environmental education -- South Africa , Environmental education -- Study and teaching -- South Africa
- Language: English
- Type: Instructional and educational works , text
- Identifier: http://hdl.handle.net/10962/70859 , vital:29754 , 978-0-620-82216-9 , https://doi.org/10.21504/10962/70859
- Description: An estimated third of the 29 million tons of food produced annually in South Africa goes to waste (Oelofse, 2014). Fifty percent of this waste (by mass) occurs during the agricultural production and post-harvest handling and storage stages (von Bormann et al., 2017). At the same time 13 million South Africans routinely experience hunger, with malnutrition a serious concern for early childhood development (StatsSA, 2018). This disconnect between the need for food and the food that is available for consumption but being wasted, has profound social, environmental and economic impacts. This, in turn, suggests that there must be opportunities to create social, environmental and economic value through innovative and transformative initiatives that link food producers with food consumers in South Africa, particularly those in need. Food for Us is a sustainable food systems mobile phone learning pilot project initiated in 2017 by a consortium of partners in South Africa working with the United Nations (UN) Sustainable Lifestyles and Education Programme within the One Planet Network. The intention was to design and develop a mobile application (app) that could help reduce on-farm food surplus, while also supporting social learning. The initial phase of the project was 18 months. This publication shares what has been learned and can also be considered a springboard for the potential that is possible.
- Full Text:
Foreign portfolio investment conference
- ANC
- Authors: ANC
- Subjects: ANC
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/153921 , vital:39536
- Description: It would be desirable to establish a "platform" to market South Africa as an investment destination for foreign investors. The platform should not be limited to portfolio investors only, but should also include marketing to potential direct investors, lenders and development aid granters. The platform should relate to a "defined range" of potential investments. The group did not feel competent to define the range because it was not adequately representative. However the group did feel that the defined range should exclude the extreme left and the extreme right. By way of example the extreme right would be a short-term investment in a project in Botshabelo and an investment of the extreme left would be a non-income generating social upliftment project.
- Full Text:
- Authors: ANC
- Subjects: ANC
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/153921 , vital:39536
- Description: It would be desirable to establish a "platform" to market South Africa as an investment destination for foreign investors. The platform should not be limited to portfolio investors only, but should also include marketing to potential direct investors, lenders and development aid granters. The platform should relate to a "defined range" of potential investments. The group did not feel competent to define the range because it was not adequately representative. However the group did feel that the defined range should exclude the extreme left and the extreme right. By way of example the extreme right would be a short-term investment in a project in Botshabelo and an investment of the extreme left would be a non-income generating social upliftment project.
- Full Text:
Foreign portfolio investment conference - report to the ANC
- ANC
- Authors: ANC
- Subjects: African National Congress (ANC)
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/161037 , vital:40584
- Full Text:
- Authors: ANC
- Subjects: African National Congress (ANC)
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/161037 , vital:40584
- Full Text:
Foreword for the programme for the intervarsity rowing regatta 1978
- Authors: Henderson, Derek Scott
- Language: English
- Type: Text
- Identifier: vital:7363 , http://hdl.handle.net/10962/d1017243
- Full Text:
- Authors: Henderson, Derek Scott
- Language: English
- Type: Text
- Identifier: vital:7363 , http://hdl.handle.net/10962/d1017243
- Full Text:
Foreword: inter-university photographic exhibition brochure
- Authors: Henderson, Derek Scott
- Language: English
- Type: Text
- Identifier: vital:7361 , http://hdl.handle.net/10962/d1017241
- Full Text:
- Authors: Henderson, Derek Scott
- Language: English
- Type: Text
- Identifier: vital:7361 , http://hdl.handle.net/10962/d1017241
- Full Text:
GMRD Issue 12
- Govan Mbeki Research & Development Centre (GMRDC)
- Authors: Govan Mbeki Research & Development Centre (GMRDC)
- Language: English
- Type: text
- Identifier: vital:11986 , http://hdl.handle.net/10353/d1015162
- Full Text:
- Authors: Govan Mbeki Research & Development Centre (GMRDC)
- Language: English
- Type: text
- Identifier: vital:11986 , http://hdl.handle.net/10353/d1015162
- Full Text:
Graduation Ceremony May 2009
- Authors: University of Fort Hare
- Language: English
- Type: text
- Identifier: vital:11985
- Description: University of Fort Hare Graduation programme Friday, 8th & Saturday, 9th May 2009.
- Full Text:
- Authors: University of Fort Hare
- Language: English
- Type: text
- Identifier: vital:11985
- Description: University of Fort Hare Graduation programme Friday, 8th & Saturday, 9th May 2009.
- Full Text:
Graduation Ceremony May 2015
- Authors: University of Fort Hare
- Language: English
- Type: text
- Identifier: vital:11984 , http://hdl.handle.net/10353/d1017828
- Description: University of Fort Hare May 2015 Graduation Ceremony, Alice Campus.
- Full Text:
- Authors: University of Fort Hare
- Language: English
- Type: text
- Identifier: vital:11984 , http://hdl.handle.net/10353/d1017828
- Description: University of Fort Hare May 2015 Graduation Ceremony, Alice Campus.
- Full Text:
Great lost recordings
- Witherden, Barry, Wilmer, Val
- Authors: Witherden, Barry , Wilmer, Val
- Language: English
- Type: Article
- Identifier: vital:13672 , http://hdl.handle.net/10962/d1012584
- Description: Photocopied article from the magazine Wire about the neglected recording "Very Urgent" by The Chris McGregor Sextet Blue Notes (1968).
- Full Text:
- Authors: Witherden, Barry , Wilmer, Val
- Language: English
- Type: Article
- Identifier: vital:13672 , http://hdl.handle.net/10962/d1012584
- Description: Photocopied article from the magazine Wire about the neglected recording "Very Urgent" by The Chris McGregor Sextet Blue Notes (1968).
- Full Text:
Grey High School speech night 1979
- Authors: Henderson, Derek Scott
- Language: English
- Type: Text
- Identifier: vital:7383 , http://hdl.handle.net/10962/d1017272
- Full Text:
- Authors: Henderson, Derek Scott
- Language: English
- Type: Text
- Identifier: vital:7383 , http://hdl.handle.net/10962/d1017272
- Full Text:
Grounds & gardens : adding value to the living space : "Enabling the Academic Project" : 26 years on the greenside
- Authors: Hazell, M
- Language: English
- Type: Text
- Identifier: vital:7959 , http://hdl.handle.net/10962/d1008354
- Description: [A presentation given by Mark Hazell, Manager: Grounds & Gardens at Rhodes University, to the Rhodes University Environmental Committee on the occasion of his retirement from Rhodes University]
- Full Text:
- Authors: Hazell, M
- Language: English
- Type: Text
- Identifier: vital:7959 , http://hdl.handle.net/10962/d1008354
- Description: [A presentation given by Mark Hazell, Manager: Grounds & Gardens at Rhodes University, to the Rhodes University Environmental Committee on the occasion of his retirement from Rhodes University]
- Full Text:
Group photo's of Staff and Student Collaborators
- Authors: Nyokong, Tebello
- Language: English
- Type: still image
- Identifier: vital:7231 , http://hdl.handle.net/10962/d1006061
- Description: Group photo's of Staff and Student collaborators at Rhodes University
- Full Text:
- Authors: Nyokong, Tebello
- Language: English
- Type: still image
- Identifier: vital:7231 , http://hdl.handle.net/10962/d1006061
- Description: Group photo's of Staff and Student collaborators at Rhodes University
- Full Text:
Haliburton: Case Study of a Well-Connected War Profiteer
- Language: English
- Type: text , newspaper cutting
- Identifier: http://hdl.handle.net/10948/37686 , vital:34207 , Bulk File 7
- Description: This is a newspaper cutting in the collection of the Unity Movement, with no source details given.
- Full Text: false
- Language: English
- Type: text , newspaper cutting
- Identifier: http://hdl.handle.net/10948/37686 , vital:34207 , Bulk File 7
- Description: This is a newspaper cutting in the collection of the Unity Movement, with no source details given.
- Full Text: false
Halle That Jazz
- Mulard, Christine, Cosenza, Marie
- Authors: Mulard, Christine , Cosenza, Marie
- Language: French
- Type: Article
- Identifier: vital:13614 , http://hdl.handle.net/10962/d1012484
- Description: Photocopied article from the magazine Jazz Hot about the festival "Halle That Jazz", France. Chris McGregor is taking part of the festival with the band Brotherhood of Breath. The organisers are planning to relocate the festival in other cities in France.
- Full Text:
- Authors: Mulard, Christine , Cosenza, Marie
- Language: French
- Type: Article
- Identifier: vital:13614 , http://hdl.handle.net/10962/d1012484
- Description: Photocopied article from the magazine Jazz Hot about the festival "Halle That Jazz", France. Chris McGregor is taking part of the festival with the band Brotherhood of Breath. The organisers are planning to relocate the festival in other cities in France.
- Full Text:
Halle That Jazz
- Unknown
- Authors: Unknown
- Subjects: McGregor, Chris--1936-1990 , Brotherhood of Breath (Musical group) , Ibrahim, Abdullah , Jazz
- Language: French
- Type: Article
- Identifier: vital:13709 , http://hdl.handle.net/10962/d1012720
- Description: Photocopied article in French about the music festival Halle That Jazz, in Paris (France). There is also 2 pictures with this article. The top picture shows Abdullah Ibrahim and the bottom picture shows Chris McGregor playing piano on stage.
- Full Text:
- Authors: Unknown
- Subjects: McGregor, Chris--1936-1990 , Brotherhood of Breath (Musical group) , Ibrahim, Abdullah , Jazz
- Language: French
- Type: Article
- Identifier: vital:13709 , http://hdl.handle.net/10962/d1012720
- Description: Photocopied article in French about the music festival Halle That Jazz, in Paris (France). There is also 2 pictures with this article. The top picture shows Abdullah Ibrahim and the bottom picture shows Chris McGregor playing piano on stage.
- Full Text:
Harnessing the energy of the sun
- Authors: Matiwana, Zamuxolo
- Language: English
- Type: Article
- Identifier: vital:7207 , http://hdl.handle.net/10962/d1006410
- Description: Capturing solar energy was the theme of this year's Barker Lecture delivered by Professor Derek Sehlettwein, an expert electrochemist from Justus-Liebig University in Giessen. Germany
- Full Text:
- Authors: Matiwana, Zamuxolo
- Language: English
- Type: Article
- Identifier: vital:7207 , http://hdl.handle.net/10962/d1006410
- Description: Capturing solar energy was the theme of this year's Barker Lecture delivered by Professor Derek Sehlettwein, an expert electrochemist from Justus-Liebig University in Giessen. Germany
- Full Text:
He switched from Classics to Jazz
- Unknown
- Authors: Unknown
- Subjects: McGregor, Chris--1936-1990 , Jazz
- Language: English
- Type: Article
- Identifier: vital:13710 , http://hdl.handle.net/10962/d1012721
- Description: Photocopied article from the South Africa newspaper about Chris McGregor, considered as one of the personalities of the National Jazz Festival at Orlando Stadium. A portrait of Chris McGregor is also accompanying this article.
- Full Text:
- Authors: Unknown
- Subjects: McGregor, Chris--1936-1990 , Jazz
- Language: English
- Type: Article
- Identifier: vital:13710 , http://hdl.handle.net/10962/d1012721
- Description: Photocopied article from the South Africa newspaper about Chris McGregor, considered as one of the personalities of the National Jazz Festival at Orlando Stadium. A portrait of Chris McGregor is also accompanying this article.
- Full Text:
Heads and Tails for New Year's eve
- Unknown
- Authors: Unknown
- Subjects: McGregor, Chris--1936-1990 , Jazz
- Language: French
- Type: Article
- Identifier: vital:13711 , http://hdl.handle.net/10962/d1012722
- Description: Photocopied article in French about a concert at New Year's eve by 2 bands, including Hot d'Oc.
- Full Text:
- Authors: Unknown
- Subjects: McGregor, Chris--1936-1990 , Jazz
- Language: French
- Type: Article
- Identifier: vital:13711 , http://hdl.handle.net/10962/d1012722
- Description: Photocopied article in French about a concert at New Year's eve by 2 bands, including Hot d'Oc.
- Full Text:
Here come Chris and the Blue Notes
- Unknown
- Authors: Unknown
- Subjects: McGregor, Chris--1936-1990 , Blue Notes (Musical group : South Africa) , Pukwana, Dudu , Dyani, Johnny Mbizo , Moholo, Louis T.--1940- , Moyake, Nikele , Feza, Mongezi
- Language: English
- Type: Article
- Identifier: vital:13712 , http://hdl.handle.net/10962/d1012723
- Description: Photocopied article from the newspaper The Post about Chris McGregor's Blue Notes playing in Durban before the band leaves for France and the Antibes jazz festival. There is a picture of (from left to right) Dudu Pukwana, Johnny Dyani, CHris McGregor, Louis Moholo, Nick Moyake and Mongezi Feza with this article.
- Full Text:
- Authors: Unknown
- Subjects: McGregor, Chris--1936-1990 , Blue Notes (Musical group : South Africa) , Pukwana, Dudu , Dyani, Johnny Mbizo , Moholo, Louis T.--1940- , Moyake, Nikele , Feza, Mongezi
- Language: English
- Type: Article
- Identifier: vital:13712 , http://hdl.handle.net/10962/d1012723
- Description: Photocopied article from the newspaper The Post about Chris McGregor's Blue Notes playing in Durban before the band leaves for France and the Antibes jazz festival. There is a picture of (from left to right) Dudu Pukwana, Johnny Dyani, CHris McGregor, Louis Moholo, Nick Moyake and Mongezi Feza with this article.
- Full Text: