Address at the Farewell to Mr. David Wylde, Headmaster of St Andrews College, Grahamstown
- Authors: Badat, Saleem
- Date: 2008-10-18
- Subjects: Wylde, David
- Language: English
- Type: Text
- Identifier: vital:7664 , http://hdl.handle.net/10962/d1015809
- Full Text:
- Date Issued: 2008-10-18
Address of the Vice-Chancellor at the unveiling of the tapestry in the Rhodes University Council and Senate Chamber
- Authors: Badat, Saleem
- Date: 2011-12-01
- Language: English
- Type: Text
- Identifier: vital:7857 , http://hdl.handle.net/10962/d1016050
- Full Text:
- Date Issued: 2011-12-01
Address on receipt of an Honorary Doctorate from the University of York, United Kingdom
- Authors: Badat, Saleem
- Date: 2008-07-10
- Language: English
- Type: Text
- Identifier: vital:7701 , http://hdl.handle.net/10962/d1015846
- Full Text:
- Date Issued: 2008-07-10
Address to the convocation of Rhodes University
- Authors: Badat, Saleem
- Date: 2008-08-23
- Subjects: Rhodes University
- Language: English
- Type: Text
- Identifier: vital:7685 , http://hdl.handle.net/10962/d1015830
- Full Text:
- Date Issued: 2008-08-23
Address to the Grahamstown Region Meeting of the East Cape Master Builders Association
- Authors: Badat, Saleem
- Date: 2007-06-07 , 2014-07-11
- Language: English
- Type: Text
- Identifier: vital:7635 , http://hdl.handle.net/10962/d1012604
- Full Text:
- Date Issued: 2007-06-07
C.O.R.I.C. 2nd Annual General Meeting
- Authors: Henderson, Derek Scott
- Date: 1984-09-05
- Language: English
- Type: Text
- Identifier: vital:7469 , http://hdl.handle.net/10962/d1018346
- Full Text:
- Date Issued: 1984-09-05
Chemistry Department: we are chemicals all over
- Authors: Nyokong, Tebello
- Language: English
- Type: Article
- Identifier: vital:7173 , http://hdl.handle.net/10962/d1006080
- Description: National University of Lesotho publication: The Light in the Night article by Tebello Nyokong on the Chemistry Department
- Full Text:
CHERTL panel on university rankings
- Authors: Badat, Saleem
- Date: 2013-07-15
- Language: English
- Type: Text
- Identifier: vital:7901 , http://hdl.handle.net/10962/d1016451
- Full Text:
- Date Issued: 2013-07-15
Defining our purposes and roles and meeting our challenges
- Authors: Badat, Saleem , Higher Education South Africa (Organization)
- Date: 2006-08 , 2014-06-12
- Subjects: Universities and colleges -- South Africa
- Language: English
- Type: Text
- Identifier: vital:7606 , http://hdl.handle.net/10962/d1011803
- Description: This paper briefly articulates the social purposes and roles of universities; outlines some of the key strengths and achievements of South African universities post-1994, and; identifies the critical issues and challenges that confront our universities in relation to their core social purposes and roles.
- Full Text:
- Date Issued: 2006-08
Effects of ZnO nanohexagons and nanorods on the fluorescence behavior of metallophthalocyanines
- Authors: D’Souza, Sarah , Moeno, Sharon , Nyokong, Tebello
- Language: English
- Type: Article
- Identifier: vital:7263 , http://hdl.handle.net/10962/d1020272
- Description: This paper looks at the fluorescence behavior of zinc phthalocyanines: 2,(3),9(10),16(17),23(24)-tetrakis-(mercaptoacetic acid phthalocyaninato) zinc(II) (ZnTMAAPc), 2,(3),9(10),16(17),23(24)-tetrakis-(mercaptopropanoic acid phthalocyaninato) zinc(II) (ZnTMPAPc) and (OH)AlPcSmix (the latter contains a mixture of the di-, tri- and tetra-sulfonated derivatives with an average of three sulfonated groups per molecule) in the presence of ZnO nanoparticles. Fluorescence lifetimes of Pc complexes generally decreased in the presence of ZnO nanoparticles, with generally longer lifetimes for ZnO nanohexagons compared to ZnO nanorods. , Original publication is available at http://dx.doi.org/10.1016/j.poly.2014.09.012
- Full Text: false
Exploring the political geoecology of African Drainage Basins
- Authors: Rowntree, Kate
- Date: 2008-04
- Language: English
- Type: Text
- Identifier: vital:580 , http://hdl.handle.net/10962/d1018873 , Transcript of Inaugural lecture August 2007
- Description: [From the text] Many people in Africa rely directly on their natural ecosystems for their livelihoods. A key driver of these ecosystems is water, which in Africa has a high spatial and temporal variability. Water comes from rainfall, but the availability of that water depends on the way that it is processed through the landscape unit known as a drainage basin. Drainage basins are the "home" of rivers; rivers which sustain ecosystems and their dependents (human society). Humans and ecosystems cannot live apart from one another, but the relationship can be exploitative and degrading, or harmonious and protective. Throughout history human activity has been subject to direct controls and indirect pressures subjected by the larger society, through political, economic and cultural forces that are often intertwined. Rivers are especially sensitive to the geography of this relationship. Being longitudinal ecosystems that transfer water and other materials from the source of the river to the oceans, activities in upstream areas have a direct impact on downstream areas. To explore these socio-ecological relationships within the context of an African drainage basin I have developed the concept of political geoecology that is explored in this address.
- Full Text:
- Date Issued: 2008-04
How healthy is our Constitutional Democracy?
- Authors: Badat, Saleem
- Date: 2009-09-22
- Language: English
- Type: Text
- Identifier: vital:7743 , http://hdl.handle.net/10962/d1015890
- Full Text:
- Date Issued: 2009-09-22
How to spread it: Saleem Badat
- Authors: Badat, Saleem
- Date: 2013-08-04
- Language: English
- Type: Text
- Identifier: vital:7903 , http://hdl.handle.net/10962/d1016453
- Full Text:
- Date Issued: 2013-08-04
Int. Jazz Festival
- Authors: Unknown
- Subjects: McGregor, Chris--1936-1990 , Pukwana, Dudu , Moholo, Louis T.--1940- , Dyani, Johnny Mbizo , Ibrahim, Abdullah
- Language: German
- Type: Text
- Identifier: vital:13774 , http://hdl.handle.net/10962/d1012801
- Description: Original program for the music festival "Int. Jazz Festival", at the Volkhaus in Zürich, Germany.
- Full Text:
Management 1 lecture
- Authors: Badat, Saleem
- Date: 2011-09-06
- Language: English
- Type: Text
- Identifier: vital:7814 , http://hdl.handle.net/10962/d1016007
- Full Text:
- Date Issued: 2011-09-06
Mechanisms generating biological diversity in the genus Platypleura Amyot & Serville, 1843 (Hemiptera: Cicadidae) in southern Africa: implications of a preliminary molecular phylogeny
- Authors: Villet, Martin H , Barker, Nigel P , Lunt, N
- Date: 2004
- Language: English
- Type: Article
- Identifier: vital:6554 , http://hdl.handle.net/10962/d1006012
- Description: Truly understanding biological diversity requires a move from descriptive studies to mechanistic interpretations based on comparative biology and a thorough recognition of the natural history of the focal organisms. A useful step in such comparative studies is the generation of a phylogeny, so that one can assess the phylogenetic independence of the focal taxa and trace the evolutionary significance of their characteristics. As a preliminary to such studies on the platypleurine cicada genus Platypleura, we sequenced 498 bases of the cytochrome oxidase I (COI) gene from thirteen African species. To circumvent problems with outgroup selection, we also included sequences from representatives of the platypleurine genera Brevisiana, Capcicada, Munza, Oxypleura, Severiana, and Systophlochius, all of the subtribe Platypleuriti, and two species of the genus Ugada, of the subtribe Hainanosemiiti. The resulting phylogenies support the synonymization of the monotypic genus Systophlochius with the widespread, speciose genus Platypleura; confirm the placement of Platypleura sp. 7 in that genus; and confirm the independence of Capcicada and Platypleura. Although the preliminary phylogeny lacks strong support at many nodes, it suggests that three radiations of Platypleura have occurred in southern Africa and that there was progressive southward speciation of these radiations. A novel modification of the ancestral area analysis further suggests that the group has an ancestral association with acacias but there were five independent speciation events associated with host- switching. These insights can be summarized by a general hypothesis that the mechanisms underlying platypleurine biodiversity in southern Africa involve two ancient vicariance events and subsequent speciation by vicariance, switching of plant associations, and changes of habitat preferences. We offer this example to illustrate how analysis of preliminary data can help to generate hypotheticodeductive research hypotheses, to provoke interest in testing these hypotheses, and to illustrate the utility of phylogenies beyond systematics.
- Full Text:
- Date Issued: 2004
Nonlinear optical properties of natural laccaic acid dye studied using Z-scan technique
- Authors: Zongo, S , Sanusi, Kayode , Britton, Jonathan , Mthunzi, P , Nyokong, Tebello , Maaza, M , Sahraoui, B
- Date: 2015
- Language: English
- Type: Article
- Identifier: vital:7261 , http://hdl.handle.net/10962/d1020270
- Description: We have investigated the nonlinear optical properties, including the optical limiting behaviour for five different concentrations of laccaic acid dye in solution and a thin film obtained through doping in poly (methyl methacrylate) (PMMA) polymer. The experiments were performed by using single beam Z-scan technique at 532 nm with 10 ns, 10 Hz Nd:YAG laser pulses excitation. From the open-aperture Z-scan data, we derived that the laccaic dye samples exhibit strong two photon absorption (2PA). The nonlinear refractive index was determined through the closed aperture Z-scan data. The estimated absorption coefficient β2, nonlinear refractive index n2 and second order hyperpolarizability γ were found to be of the order of 10−10 m/W, 10−9 esu and 10−32 esu, respectively. The Z-scan study reveals that the natural laccaic acid dye emerges as a promising material for third order nonlinear optical devices application. , Original publication is available at http://dx.doi.org/10.1016/j.optmat.2015.04.031
- Full Text: false
- Date Issued: 2015
On university differentiation and diversity
- Authors: Badat, Saleem
- Date: 2011-06-30
- Language: English
- Type: Text
- Identifier: vital:7840 , http://hdl.handle.net/10962/d1016033
- Full Text:
- Date Issued: 2011-06-30
Perspectives on the skills shortage, the role of Higher Education Institutions to overcome this shortage and the possible role of JIPSA
- Authors: Badat, Saleem
- Date: 2008-03-26
- Subjects: Higher Education -- South Africa
- Language: English
- Type: Text
- Identifier: vital:7717 , http://hdl.handle.net/10962/d1015862
- Full Text:
- Date Issued: 2008-03-26
Proposed guest list for cheese and wine party and welcome speech for participants of the Faculty of Divinity summer school, Feb 3 - 7 1986
- Authors: Henderson, Derek Scott
- Date: 1986-02-04
- Language: English
- Type: Text
- Identifier: vital:7484 , http://hdl.handle.net/10962/d1018361
- Full Text:
- Date Issued: 1986-02-04