List of Titles

A.k.a. Breyten Breytenbach : critical approaches to his writings and paintings, J.L. Coullie and J.U. Jacobs, eds. : book review

- Vorster, A F

Authors: Vorster, A F
Date: 2005
Language: English
Type: Article
Identifier: vital:6335 , http://hdl.handle.net/10962/d1012399
Description: a.k.a. Breyten Breytenbach brings together a collection of 14 essays by 12 scholars on the work of this remarkable South African writer, poet and painter. Designating Breytenbach as ‘South African’ is, of course, already a highly contentious act. It relates directly to the central concern of this volume (and one of the central concerns of Breytenbach’s work), namely the question of identity. The title characterises the artist’s proper name as but one in a series of constantly shifting and interchanging personas adopted in his art (and in his life, e.g. when working underground in the 1970s to contribute to the overthrow of the apartheid regime). The painting on the cover further explores the theme of the mask, with the white male figure’s face covered by a book-like object (although his eyes are partially visible through the object), and the presence of a burning hat floating in the air next to him serves as an additional link with many of his other paintings where headgear is associated with shifting identities, as pointed out by Marilet Sienaert in her essay, “The I of the Beholder: Identity and Place in the Art and Writing.” Like several of the other authors, Sienaert places great emphasis on the notion of movement or transformation as critical to Breytenbach’s thinking and creative practice. It is virtually unavoidable, given his background, that he should grapple with “the contemporary notion of ‘home’ being both everywhere and nowhere”, and that travel and nomadism should have become two of the most prominent themes in his poetry as well as his prose. Identity and creativity are both dependent upon the ability to constantly renew oneself and to “keep moving”.
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Date Issued: 2005

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Submerged membrane bioreactor and secondary digestion in the treatment of wine distillery waste: Part II: the effect of fungal pre-treatment on wine distillery wastewater digestion

- Melamane, Xolisa L, Strong, Peter James, Tandlich, Roman, Burgess, Jo E

Authors: Melamane, Xolisa L , Strong, Peter James , Tandlich, Roman , Burgess, Jo E
Date: 2007
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/76150 , vital:30514 , https://www.prt-parlar.de/download_feb_2007/
Description: The effect of fungal pre-treatment using Trametes pubescens on the anaerobic digestion ultrafiltration treatment of wine distillery wastewater (WDW) was studied. The downstream biological treatment system, consisting of four individual reactors, was operated for 30 days. pH buffering was achieved by mixing the pre-treated system feed with CaCO3 and K2HPO4; this proved significant for optimum performance of the system in removal of soluble chemical oxygen demand (CODS). The experimental system was shown to eliminate an average of 86 (± 4) % of CODS present in the pre-treated WDW. Treatment in a submerged membrane bioreactor (SMBR) and subsequent secondary digester, together with pH buffering using CaCO3 and K2HPO4, led to the stabilisation of CODS removal. The residual CODS levels in the final effluent were approximately 400 mg/l, significantly lower than the concentrations observed when treating raw WDW, indicating that fungal pre-treatment might have provided additional nutrients for removal of recalcitrant components of the wastewater. The resulting effluent of the system is rich in nitrates and phosphates. Together with the residual organic content it might be used as a fertiliser. Alternatively, if water management of the wine distillery is an issue, a membrane process, such as reverse osmosis or nanofiltration could be applied to bring the parameters of the water to meet the technological needs.
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Date Issued: 2007

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The relationship between concurrently measured SASS (South African Scoring System) and turbidity data archived in the South African River Health Programme’s Rivers Database

- Gordon, Andrew K, Griffin, Neil J, Palmer, Carolyn G

Authors: Gordon, Andrew K , Griffin, Neil J , Palmer, Carolyn G
Date: 2015
Language: English
Type: text , Article
Identifier: vital:7098 , http://hdl.handle.net/10962/d1015956
Description: The need for monitoring the biological impacts of instream sediments has long been recognised, yet robust and scientifically defensible tools for doing so are still in the early stages of development because of the difficulties experienced by researchers in characterising the complicated mechanisms of biological effect elicited by sediment particles. Biological monitoring is one such tool, and this paper reports on the initial stages of a study to determine the most applicable approach for measuring the effects of instream sediments on aquatic macroinvertebrates in the South African context. In this first instance, the suitability of the rapid macroinvertebrate biomonitoring tool (the South African Scoring System) was investigated by determining the extent of the correlation between concurrently measured SASS metrics and turbidity data collected for the South African River Health Programme. All three SASS metrics – SASS score, number of taxa (NOT), and average score per taxon (ASPT) – were found to be significantly negatively correlated with turbidity, although variation in the data was high. Turbidity was found to be the major driver of change in ASPT. In contrast, electrical conductivity was the major driver of SASS scores and NOT, with turbidity a close second. When combined, electrical conductivity and turbidity accounted for 80 percent (SASS score) and 75 percent (NOT) of the variation in the regression model. Consequently, SASS metrics are a crude, but reliable, indicator of the negative biological implications of excessive instream sedimentation as measured by turbidity. A number of other potential biomonitoring approaches for detecting the impacts of fine sediment exposure are identified for further investigation: spatial analyses of macroinvertebrate assemblages; and the use of structural and functional metrics.
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Date Issued: 2015

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Synthesis of molecularly imprinted polymer for selective solid-phase extraction of Salbutamol from urine samples

- Mohammadi, Ali, Alizadeh, Taher, Dinarvand, Rassoul, Ganjali, Mohammed M, Walker, Roderick B

Authors: Mohammadi, Ali , Alizadeh, Taher , Dinarvand, Rassoul , Ganjali, Mohammed M , Walker, Roderick B
Date: 2009
Language: English
Type: Article
Identifier: vital:6410 , http://hdl.handle.net/10962/d1006496
Description: A highly selective methacrylic based molecularly imprinted polymer (MIP) was synthesized and applied for the separation and the pre-concentration of salbutamol in urine samples. Spectrophotometric determination of salbutamol was achieved using 2,6-dichloroquinone chlorimide as colorimetric reagent. The detection limit of the method was ca. 13 ng/mL in urine after pre-concentration of the samples by MIP-SPE andanalysis with an optimized and sensitive spectrophotometric method. The linear dynamic range for salbutamol determination in urine was 0.04-0.75 μg mL-1. The recovery for the affinity based solid-phase extraction (SPE) with the MIP was more than 96 %.
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Date Issued: 2009

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The first Bothriolepsis-associated Devonian fish fauna from Africa

- Anderson, M Eric, Hiller, Norton, Gess, Robert W

Authors: Anderson, M Eric , Hiller, Norton , Gess, Robert W
Date: 1994
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/73852 , vital:30235 , https://journals.co.za/content/sajsci/90/7/AJA00382353_5900
Description: An advanced diplacanthid (Climatiiformes) is described from a Famennian estuarine environment of South Africa. It is characterized by having exceptionally long thin fin spines and a deep body form. Unusual details of the fins and fin spine insertions are preserved. This is the first record of a diplacanthid from the Southern Hemisphere.
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Date Issued: 1994

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Re-estimation of erosion levels in Group I and II kimberlites between Lesotho, Kimberley and Victoria West, South Africa

- Hanson, E Kelsey, Moore, John M, Robey, J, Bordy, Emese M, Marsh, Julian S

Authors: Hanson, E Kelsey , Moore, John M , Robey, J , Bordy, Emese M , Marsh, Julian S
Date: 2006
Language: English
Type: text , long abstracts
Identifier: http://hdl.handle.net/10962/132144 , vital:36804
Description: The estimation of post-emplacement kimberlite erosion in South Africa through the study of upper-crustal xenoliths is relatively unexplored; however the presence of these xenoliths has been recognized for well over a 100 years. Previously postemplacement erosion levels of a small number of kimberlite pipes have been inferred through the study of the degree of country-rock diagenesis, the depth of sill formation and the depth of the initiation of diatreme facies kimberlite.
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Date Issued: 2006

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Suggestions: For consideration at Meeting of Preliminary Convention Committee, Cape Town: Monday 11th September, 1961

- Daniels, J C A, South African National Convention Movement. Council.

Authors: Daniels, J C A , South African National Convention Movement. Council.
Date: 1961-08-30
Subjects: Coloured National Convention , Colored people (South Africa) , Civil rights -- South Africa , Apartheid -- South Africa , South Africa -- Race relations -- 20th century , South Africa -- Social conditions -- 1961-1994 , Human rights -- South Africa -- History -- 20th century , South Africa. South African Coloured National Convention , South Africa. South African Coloured People's Congress
Type: Text
Identifier: http://hdl.handle.net/10962/32082 , vital:24009 , MS 10 812 , This manuscript 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.
Description: Suggestions for consideration at the Meeting of Preliminary Convention Committee, placed before the Council of the South African National Convention Movement.
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Date Issued: 1961-08-30

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Publicising chemistry in a multicultural society through chemistry outreach

- Harrison, T G, Shallcross, D E, Norman, N C, Sewry, Joyce D, Davies-Coleman, Michael T

Authors: Harrison, T G , Shallcross, D E , Norman, N C , Sewry, Joyce D , Davies-Coleman, Michael T
Date: 2011
Language: English
Type: Article
Identifier: vital:6573 , http://hdl.handle.net/10962/d1004136
Description: Given the emphasis in Higher Education on community engagement in South Africa and the importance of international collaboration, we discuss a joint approach to chemistry outreach in two countries on two continents with widely differing target school audiences. We describe the history of the partnership between the chemistry departments at Rhodes University and the University of Bristol and provide an outline of the chemistry content of their outreach initiatives, the modes of delivery, the advantages to both departments and their students for involvement in various levels of outreach, the challenges they still face and additional opportunities that such work facilitated. The lecture demonstration 'A Pollutant's Tale' was presented to thousands of learners all over the world, including learners at resource-deprived schools in South Africa. Challenges to extend outreach activities in South Africa include long travelling distances, as well as a lack of facilities (such as school halls and electricity) at schools. Outreach activities not only impacted on the target audience of young learners, they also impacted upon the postgraduate and other chemistry students taking part in these initiatives. This collaboration strengthened both institutions and their outreach work and may also lead to chemistry research collaborations between the academics involved.
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Date Issued: 2011

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The inception phase of a case study of outcomes - based education assessment policy in the Human and Social Sciences Learning Area of C2005

- Wilmot, P Dianne

Authors: Wilmot, P Dianne
Date: 2003
Language: English
Type: Article
Identifier: vital:6107 , http://hdl.handle.net/10962/d1009736
Description: This article describes the Inception Phase (January to December 2002) of an ongoing research project focused on the Grade 9 Learning Area of Human and Social Sciences of Curriculum 2005. The case study involves a dynamic interaction between a university lecturer, playing the role of 'outside facilitator', and the History and Geography teachers at two independent schools. The article describes how teachers in a given context respond to outcomes-based education assessment policy, and the tools and processes they use to develop the deep understanding inferred by policy (Republic of South Africa, 2000) to implement change in a meaningful way. The article consists of three sections. The first contextualises significant events which foregrounded and provided the impetus for the research project. It provides an overview of the theory informing the research and the goals of the research. The second analyses in narrative form the various stages of the Inception Phase. It describes a process of curriculum development which has involved the development of criterion- referenced assessment rubrics, a Learner and Curriculum Profile, and an audit of current assessment practices in History and Geography at the two schools. The article illuminates the time and effort necessary for creative and systemic curriculum innovation. The final section synthesizes the information gathered.
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Date Issued: 2003

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Where has all the Geography gone? : a social constructivist perspective of Curriculum 2005

- Van Harmelen, U

Authors: Van Harmelen, U
Date: 1999
Language: English
Type: Article
Identifier: vital:6092 , http://hdl.handle.net/10962/d1008614
Description: The apparently tenuous position of geography in Curriculum 2005 suggests the need to reassess the nature and role of geographical education for the South African learner. The new curriculum is designed to provide a general education experience and this paper therefore considers geography's role within this framework. In so doing it raises questions that impact on the view we take of geography within Curriculum 2005 and explores the implications for teaching and learning within this educational band. For many learners in South Africa geography is seen as little more than 'book knowledge'. Not only has the content been de-contextualised from the learner's reality, but also the method of learning is largely dependent on the rote learning of a frightening array of facts from a single textbook or teacher designed notes. However, the learner-centred approach adopted by Curriculum 2005 creates considerable possibilities for the development of geographical understanding in the sense of making meaning, problem solving and the development of creative and critical thinking. The situation of geographical education in the GET band of Curriculum 2005 presents geography educators and teacher educators with considerable challenges and demands a radical shift in perspective in terms of what constitutes geographical knowledge in this band as well as its acquisition. The paper argues that a social constructivist approach within the 'new' systems theory, creates possibilities for learners to acquire the conceptual understanding, skills, values and attitudes needed as a foundation for further learning in geography and to enable them to function effectively and responsibly in space-place and time.
Full Text: false
Date Issued: 1999

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Influence of annealing on thermoluminescence of natural quartz: kinetic analysis and experimental study of apparent inverse thermal quenching

- Folley, Damilola E, Chithambo, Makaiko L

Authors: Folley, Damilola E , Chithambo, Makaiko L
Date: 2018
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/109996 , vital:33212 , https://doi.org/10.1016/j.radmeas.2018.04.010
Description: The influence of annealing on the main thermoluminescence glow-peak of natural quartz is reported. For comparison, results from un-annealed quartz are included. The glow-curve measured at 1 °Cs−1 after beta irradiation to 50 Gy revealed six peaks each for quartz annealed at 800 °C for 1 h and the un-annealed sample. The main peak in both quartzes was observed at 72 °C. This report focusses on kinetic analysis of the main peak. The analysis was carried out using various methods consisting of the initial rise, whole glow-peak, peak shape, variable heating rate and phosphorescence-based methods. The activation energy obtained using the various methods ranges between and for the annealed sample and between and for the un-annealed sample. The result suggests that annealing has little effect on the activation energy. The luminescence intensity decreased with heating rate in the un-annealed sample in a manner suggestive of thermal quenching. In contrast, the dependence of intensity on heating rate in the annealed sample is influenced by the dose the sample is irradiated to. Whereas thermal quenching was noted for a dose of 50 Gy in the un-annealed sample, the annealed sample showed evidence of thermal quenching at a low dose of 3 Gy with the opposite effect when irradiated to 50 Gy. The activation energies of thermal quenching were found as and for the un-annealed and annealed samples respectively. We ascribe the apparent dependence of thermal quenching on dose in the annealed sample to competition between radiative and non-radiative transitions at the recombination centre.
Full Text: false
Date Issued: 2018

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