Browsing by Title
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Mohamed, Nadia (South African Dental Association, 2008)[more][less]
Abstract: Objectives: The aim of this study is to compare the success rate obtained when applying either a calcium hydroxide (Dycal) base or a zinc oxide-eugenol (Kalzinol) base following the traditional ferric sulfate pulpotomy. Methods: Patients were either treated in the chair or under general anaesthesia. All teeth had to have radiographic evidence of caries close to the pulp. After haemostasis was achieved with damp cotton pellets, ferric sulfate was applied to the pulpal stumps. Half of the cases then received a Dycal base followed by a cured layer of Vitrebond and a permanent amalgam restoration. The other half of the cases received a base of zinc oxide-eugenol (Kalzinol) followed by an amalgam restoration. The cases were followed up every 6 months for one year (ie. 2 follow-up visits). Radiographs were taken at each follow-up visit. Results: Overall, teeth treated with Dycal demonstrated a higher failure rate when compared with those that received the Kalzinol base. Abscess formation and internal resorption were the most common causes of failure. Even though the Kalzinol base demonstrated greater success, there were still quite a few failures. Conclusion: This study demonstrates that calcium hydroxide cannot be recommended as a medicament in primary tooth pulpotomies. URI: http://hdl.handle.net/10566/415 Files in this item: 1
MohamedPulpotomy2008.pdf (904.0Kb) -
Sivakumar, Pasupathi; Maiyalagan, Thandavarayan (Trans Tech Publications, 2010)[more][less]
Abstract: Fuel cells, as devices for direct conversion of the chemical energy of a fuel into electricity by electrochemical reactions, are among the key enabling technologies for the transition to a hydrogen-based economy. Among the various types of fuel cells, polymer electrolyte membrane fuel cells (PEMFCs) are considered to be at the forefront for commercialization for portable and transportation applications because of their high energy conversion efficiency and low pollutant emission. Cost and durability of PEMFCs are the two major challenges that need to be addressed to facilitate their commercialization. The properties of the membrane electrode assembly (MEA) have a direct impact on both cost and durability of a PEMFC. An overview is presented on the key components of the PEMFC MEA. The success of the MEA and thereby PEMFC technology is believed to depend largely on two key materials: the membrane and the electro-catalyst. These two key materials are directly linked to the major challenges faced in PEMFC, namely, the performance, and cost. Concerted efforts are conducted globally for the past couple of decades to address these challenges. This chapter aims to provide the reader an overview of the major research findings to date on the key components of a PEMFC MEA. URI: http://hdl.handle.net/10566/166 Files in this item: 1
MaiyalaganPasupathi2010.pdf (1.330Mb) -
Conradie, Ernst (Stellenbosch University, 2010)[more][less]
Abstract: This contribution explores the significance but also the immense complexities of Christian discourse on confessing guilt within the context of climate change. It draws especially on South African discourse on confessing guilt in the context of apartheid. The argument of the essay is twofold: Christians with an enduring large carbon footprint may wish to confess their guilt in this regard, but typically find it difficult to live from God’s liberating forgiveness and are therefore prone to rather desperate efforts to save the world themselves. By contrast, Christians with a small carbon footprint may opt for alternative understanding of salvation, namely in terms of redemption from the looming threat of climate change. URI: http://hdl.handle.net/10566/456 Files in this item: 1
ConradieConfessingGuilt2010.pdf (126.6Kb) -
Tucker, William D. (ACM, 2004)[more][less]
Abstract: Connecting people across the Digital Divide is as much a social effort as a technological one. We are developing a community-centered approach to learn how interaction techniques can compensate for poor communication across the Digital Divide. Preliminary trials have yielded interfaces that deal with poor quality by adapting Instant Messaging techniques for multiple modalities, providing improved semi-synchronous communication. Lessons learned suggest new ways to design user interfaces specifically for the developing world. URI: http://hdl.handle.net/10566/591 Files in this item: 1
Tucker-CHI2004.pdf (81.56Kb) -
du Toit, Francois (Juta Law, 2009)[more][less]
Abstract: This article traces the development of the constitutional family in the South African law of succession through a synopsis of Constitutional Court and High Court judgments on the application of the Intestate Succession Act and the Maintenance of Surviving Spouses Act beyond the confines of the traditional conception of 'family'. It also investigates significant legislative developments that impacted on the establishment of the constitutional family in the South African law of succession. URI: http://hdl.handle.net/10566/238 Files in this item: 1
DuToitConstitutionalFamily2009.pdf (195.4Kb) -
du Toit, Francois (Juta, 2001)[more][less]
Abstract: This article analyses critically the impact of constitutionalism on freedom of testation and its limitation in South African law. It proposes the judicial utilisation of a 'constitutionally-founded boni mores criterion' in addressing particularly testamentary forfeiture clauses and charitable testamentary bequests. URI: http://hdl.handle.net/10566/230 Files in this item: 1
Stell LR 2001.pdf (18.56Mb) -
Bock, Zannie (Academia Press, 2009)[more][less]
Abstract: In this paper, I analyse the testimony of Colin de Souza given before South Africa's Truth and Reconciliation Commission (TRC) in the mid-1990s.1 My aim is to explore how De Souza projects an identity of himself as 'agentive', as an innovative and flexible individual who is capable of outwitting and outmaneuvering his opponents despite the fact that within the TRC context, he is positioned as a 'victim' of human rights abuse. To substantiate this argument, I use a number of Systemic Functional Linguistic (SFL) tools to analyse the way in which this agency is encoded in the language of the testimony. URI: http://hdl.handle.net/10566/281 Files in this item: 1
Bock_Construals2009.pdf (577.8Kb) -
Sithole, Jabulani (Univ. of KwaZulu-Natal) (Published by History Dept, University of the Western Cape, 2009)[more][less]
Abstract: The key characteristic of the vast amount of literature on the South African workers ʼ movement in the post-1973 period is the denial that the class and national struggles were closely intertwined. This denial is underpinned by a strong ʻantinationalist currentʼ which dismisses the national liberation struggle as ʻpopulist and nationalistʼ and therefore antithetical to socialism. This article cautions against uncritical endorsement of these views. It argues that they are the work of partisan and intolerant commentators who have dominated the South African academy since the 1970s and who have a tendency to suppress all versions of labour history which highlight these linkages in favour of those which portray national liberation and socialism as antinomies. The article also points out that these commentators use history to mobilise support for their rigidly held ideological positions and to wage current political struggles under the pretext of advancing objective academic arguments. URI: http://hdl.handle.net/10566/104 Files in this item: 1
SitholeContestations2009.pdf (184.4Kb) -
Greenberg, Stephen (Institute for Poverty, Land and Agrarian Studies, University of the Western Cape, 2010)[more][less]
Abstract: This report widens the debate about food production and distribution in South Africa to consider some of the entrenched power dynamics that shape the way these happen, and to consider whether a more radical transformation of the agro-food system is required to ensure adequate access to food for all.It considers the structure of the South African agro-food system, and looks at points of possible intervention that could not only open the system to greater involvement by those who have been marginalised or passively incorporated into that system, but that also offer potential pathways to structural change that could deepen diversity in the agro-food system and reorient it to the needs of the poor, both as historically subordinated producers and as consumers. URI: http://hdl.handle.net/10566/572 Files in this item: 1
RR42.pdf (1.218Mb) -
Raji, Ismaila; Mugabo, Pierre; Obikeze, Kenechukwu (BioMed Central, 2013)[more][less]
Abstract: Background: Tulbaghia violacea Harv. (Alliaceae) is used to treat various ailments, including hypertension (HTN) in South Africa. This study aims to evaluate the contributions of muscarinic receptors and changes in plasma aldosterone levels to its anti-hypertensive effect. Methods: In the acute experiments, methanol leaf extracts (MLE) of T. violacea (30–120 mg/kg), muscarine (0.16 -10 μg/kg), and atropine (0.02 - 20.48 mg/kg), and/or the vehicle (dimethylsulfoxide (DMSO) and normal saline (NS)) were respectively and randomly administered intravenously in a group of spontaneously hypertensive (SHR) weighing 300 to 350 g and aged less than 5 months. Subsequently, T. violacea (60 mg/kg) or muscarine (2.5 μg/kg) was infused into eight SHRs, 20 min after atropine (5.12 mg/kg) pre-treatment. In the chronic (21 days) experiments, the SHRs were randomly divided into three groups, and given the vehicle (0.2 ml/day of DMSO and NS), T. violacea (60 mg/kg/day) and captopril (10 mg/kg/day) respectively into the peritoneum, to investigate their effects on blood pressure (BP), heart rate (HR), and plasma aldosterone levels. Systolic BP and HR were measured using tail-cuff plethysmography during the intervention. BP and HR were measured via a pressure transducer connecting the femoral artery and the Powerlab at the end of each intervention in the acute experiment; and on day 22 in the chronic experiment. Results: In the acute experiments, T. violacea, muscarine, and atropine significantly (p < 0.05) reduced BP dose-dependently. T. violacea and muscarine produced dose-dependent decreases in HR, while the effect of atropine on HR varied. After atropine pre-treatment, dose-dependent increases in BP and HR were observed with T. violacea; while the BP and HR effects of muscarine were nullified. In the chronic experiments, the T. violaceatreated and captropril-treated groups had signicantly lower levels of aldosterone in plasma when compared to vehicle-treated group. Compared to the vehicle-treated group, significant reduction in BP was only seen in the captopril-treated group; while no difference in HR was observed among the groups. Conclusion: The results obtained in this study suggest that stimulation of the muscarinic receptors and a reduction in plasma aldosterone levels contribute to the anti-hypertesive effect of T. violacea. URI: http://hdl.handle.net/10566/600 Files in this item: 1
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Coetzee, Helena; Skelly, Lara (Ashgate Publishing, 2008)[more][less]
Abstract: In 2006 the National Library of South Africa (NLSA), Cape Town Campus, began a project to convert its substantial card catalogue to machine-readable form. The article gives an overview of the Library's collections and catalogue and describes the project methodology. Funding was secured from the Carnegie Corporation of New York, and an in-house team appointed to begin the conversion. In order to meet project deadlines, the work of the in-house team was later supplemented by outsourcing the entry of records into the online catalogue. With the successful completion of the project, NLSA has been able to offer Internet access to many rare publications, whose whereabouts have previously been little known, and a significant contribution has been made to the bibliographic control of South African imprints. URI: http://hdl.handle.net/10566/514 Files in this item: 1
CoetzeeCardCatalogueConversion2008.pdf (191.1Kb) -
du Toit, Francois (Elsevier, 2013)[more][less]
Abstract: This article examines the fundamental rule of South African trust law that co-trustees must always act jointly in regard to trust administration. It highlights the rule's foundation, but also contextualizes some of the practical problems associated with the rule's operation. In particular, the article focuses on South African courts' treatment of the joint-action rule, and shows that judicial engagement with the rule has not been satisfactory in all respects. The article casts some light on possible future developments in regard to co-trusteeship in South African law. URI: http://hdl.handle.net/10566/620 Files in this item: 2
duToitCo-trustees2013.pdf (113.6Kb)DuToitCo-trusteeship2013.pdf (216.6Kb) -
Wakefield, Lorenzo (Queens University, Belfast School of Law, 2011)[more][less]
Abstract: Article 40 of the United Nations Convention on the Rights of the Child1 requires states parties to take appropriate measures to ensure that children accused of committing offences are treated in a manner that would ensure that their best interests are upheld. South Africa2 ratified the CRC in 1995, the provisions of which have influenced the children’s rights clause in its 1996 Constitution. Section 28(1)(g) of the Constitution stipulates that children may not be detained, except as a measure of last resort and, should they be detained, it should be for the shortest appropriate period of time. Section 28(1)(g) goes further to give domestic effect to the following guarantees stipulated in Article 40 of the CRC: (1) the right to be treated in a manner, and kept in conditions, that take account of the child’s age; and (2) to have a legal practitioner assigned to the child. Recently, SA has enacted its Child Justice Act 75 of 2008, which came into operation on 1 April 2010. The question to be covered in this article is whether this Act truly complies with the international standards set by the CRC (15 years after SA ratified it); the general comments by the United Nations Committee on the Rights of the Child 3 and other non-binding, yet persuasive instruments like the Standard Minimum Rules on the Administration of Juvenile Justice and the United Nations Rules for the Protection of Juveniles Deprived of their Liberty. This article only examines four aspects of the Child Justice Act, being: criminal capacity; pretrial release and detention; diversion; and sentencing. It concludes that, but for a few technical aspects of the Child Justice Act, SA took significant steps to comply with its international obligations when it domesticated the CRC in relation to children who commit offences. URI: http://hdl.handle.net/10566/598 Files in this item: 1
WakefiledChildJusticeAct2011.pdf (228.2Kb) -
Bock, Zannie; Dadlana, Phakamani (University of Stellenbosch, 2002)[more][less]
Abstract: This article aims to characterize typical linguistic and discourse features of academic writing in Xhosa and English among prospective Xhosa-speaking students at the University of the Western Cape so as to account for strengths and weaknesses in the writing and provide possible ‘points’ for pedagogic intervention. It presents an analysis of a sample of entrance essays written by these students in English and Xhosa. The analysis is in terms of a framework which considers aspects of argument, register and syntax. It aims to highlight strengths and weaknesses in student writing and to ascertain the extent to which these characteristics are language-specific or cross-linguistic. The results of the analysis suggest that the ability to argue coherently in an appropriate register is the defining mark of good writing in any language, and that control over the syntax of the language is particularly important for these students when writing in English. The ability to write well, like certain aspects of style, seems to be a generic ability and affects students’ performance in both languages. URI: http://dx.doi.org /10.5785/18-1-8 Files in this item: 1
Bock_cross-linguistic2002.pdf (243.5Kb) -
Olivier, Annette; Grobler, Sias; Osman, Yusuf (Scientific Research Publishing, 2012)[more][less]
Abstract: Today it is generally accepted that most bonding agents are cytotoxic. In this study the relative cyto-toxicity of seven recent dentine bonding agents on mouse 3T3 fibroblast cells were investigated. Materials and Methods. Near-confluent mouse 3T3 fibro- blast cells were exposed to Dulbecco Modified Eagle’s Medium containing extractions from the seven different bonding agents. The cell survival rate was then determined using the standard MTT assay. Results. The cell survival rate ranking is: iBond (94%) < Gbond (78%) < Xeno V (71%) < Adper Easy Bond (63%) < Xeno V+ (61%) < Adper Scotchbond SE (33%) < XP Bond (32%). Part A of Adper Scotchbond SE had a survival rate of 35% and part B 38%. These two parts did not differ significantly. Adper Scotchbond SE and XP Bond do not differ significantly. While Xeno V+, Xeno V and Adper Easy Bond do not differ. (p < 5%; Tukey-Kramer Multiple-Comparison Test). Conclusion. All of the tested adhesive bonding agents were cytotoxic with survival rate of 3T3 cells between 94% to 31%. Of the 7 bonding agents tested iBond was found to be only slightly toxic and by far the least toxic. The two bonding agents (XP Bond and Adper Scotchbond SE) containing UDMA plus TEGDMA plus HEMA plus camphorquinone were found to be the most toxic. URI: http://hdl.handle.net/10566/589 Files in this item: 1
OlivierCytotoxicityofseven2012.pdf (339.1Kb) -
van Ryneveld, Hannelore; Mentzner, Martina (Association of German Studies (SAGV), 2010)[more][less]
Abstract: The current challenges facing the teaching of German as a foreign language at the University of the Western Cape are outlined. The article includes a brief historical overview and proposes research perspectives for the future. Description: eDUSA is the electronic journal of Deutschunterricht in Südafrika. More information is available from the Assoc. of German Studies website at http://www.sagv.org.za URI: http://hdl.handle.net/10566/191 Files in this item: 1
vanRyneveldFachDeutsch2010.pdf (57.60Kb) -
Wakefield, Lorenzo; Assim, Usang Maria (Juta, 2011)[more][less]
Abstract: The 16th and 17th sessions of the African Committee of Experts on the Rights and Welfare of the Child took place at the African Union Commission Headquarters in Addis Ababa, Ethiopia, in November 2010 and March 2011, respectively. This article provides an overview of these sessions, together with the Civil Society Organisations Fora that preceded these sessions. These sessions featured significant developments in the work of the Committee. The first relates to a new collaboration between a network of five non-governmental organisations and the Committee to promote the work of this treaty body. Secondly, the Committee delivered its first communication, finding against the government of Kenya in regard to the right to nationality (amongst other rights) of Nubian children in Kenya. These two activities are major highlights for the Committee in the execution of its mandate. It is argued that, despite the challenges faced by the Committee, it is at the threshold of a new era through which it may be established as a significant regional human rights treaty body. URI: http://hdl.handle.net/10566/546 Files in this item: 1
WakefieldAfricanCommitteeExperts2011.pdf (235.4Kb) -
Lee, Christopher J. (History Department, University of the Western Cape, 2011)[more][less]
Abstract: Introduction: This special issue of Kronos: Southern African Histories speaks to this imbalance, contributing in small measure to a recent turn in Cold War studies that has sought to incorporate regional perspectives found in area studies to readdress the parameters and politics of this extended period. Departing from the influential early work of scholars like John Lewis Gaddis – who helped to define the field of Cold War history in books such as The United States and the Origins of the Cold War, 1941-1947 (1972) and Strategies of Containment: A Critical Appraisal of Postwar American National Security Policy (1982) – scholarship published over the past two decades has reached beyond an exclusive American-Soviet dynamic and a ‘great men’ approach to history – whether Stalin or Eisenhower, among other leaders – to consider the role of social movements and popular trends, the factor of identity politics such as racial solidarity and, perhaps most significant, a broader political geography created through the global wave of decolonization after the Second World War. This change in focus can be attributed to a generational shift, as well as the end of the Cold War itself, which has resulted in the opening of archives and research areas previously unavailable. In fact, the expansion of Cold War history and diplomatic history more generally – at least in the American academy – has generated calls for renaming the field as ‘international history’ in order to move Decolonization of a Special Type: Rethinking Cold War History in Southern Africa 7 attention away from nation-state interactions to examine instead patterns of social and cultural history that transcend the totalizing effect that the ‘Cold War period’ as such has had. URI: http://hdl.handle.net/10566/626 Files in this item: 1
LeeColdWarHistory2011.pdf (111.0Kb) -
De Ville, Jacques (University of Windsor, 2007)[more][less]
Abstract: Drucilla Cornell’s book The Philosophy of the Limit has for a long time been an important reference point in attempting to understand the relation between deconstruction and law. This article examines some of the themes discussed by Cornell in this influential book. The article specifically evaluates the translation of Derrida’s thinking into law as argued for by Cornell and concludes from this reading that Cornell to some extent misrepresents and also unnecessarily “tames” Derrida’s thinking. Instead of leading to the radical transformation of law and society, Cornell’s book gives support to an understanding of the relation between law and justice that is unlikely to have this effect. The article expounds a different reading of deconstruction based on a number of Derridean texts and argues that Derrida’s thinking poses a more radical challenge to law than that presented by Cornell. URI: http://hdl.handle.net/10566/383 Files in this item: 1
DeVillleDerridaLevinasCornell2007.pdf (1.828Mb) -
Worden, Nigel (Univ. of Cape Town) (Published by History Department, University of the Western Cape, 2009)[more][less]
Abstract: This article analyses two separate cases of public violence which took place in Cape Town in the summer of 1772/3. At surface level they appear to be very different in character. One was a scrap among low-ranking soldiers who were playing cards at a shoreline outpost. The other was a formalised challenge between two captains of the VOC return fleet as they were lunching with the Governor, which resulted in a death and the flight of the murderer. Yet closer analysis suggests common ritualised codes of behaviour that intriguingly reveal how violence, masculinity and notions of honour operated at all social levels within the town. Both cases were complex and coded social conflicts, rooted in northern European early modern social beliefs and practices as transferred to a colonial context. However, none of these perpetrators of violence was viewed sympathetically by the VOC authorities at the Cape. By contrast, the assailant Captain who had escaped back to Europe was able to successfully appeal to the VOC directors in the Netherlands. URI: http://hdl.handle.net/10566/100 Files in this item: 1
WordenViolence2009.pdf (167.1Kb)