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Photocatalytic properties of neodymium diphthalocyanine towards the transformation of 4-chlorophenol

- Nensala, Ngudiankama, Nyokong, Tebello

  • Authors: Nensala, Ngudiankama , Nyokong, Tebello
  • Date: 2000
  • Subjects: To be catalogued
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/${Handle} , vital:58491 , xlink:href="https://doi.org/10.1016/S1381-1169(00)00283-1"
  • Description: Photolysis of aqueous solutions of 4-chlorophenol (4-Cp) in the presence of solid neodymium diphthalocyanine ([Pc(−2)NdPc(−2)]−) and oxygen using visible and ultraviolet (UV) radiation resulted in the formation of a number of products. For photolysis in the visible region, phenol, benzoquinone, hydroquinone were observed as intermediates and 4-chlorocatechol (4-CC) as the main product; intermediates similar to those observed for visible photolysis were obtained. Langmuir–Hinshelwood kinetic model was used for treatment of photochemical data.
  • Full Text:
  • Date Issued: 2000

Photocatalytic reactions of metal diphthalocyanine complexes

- Nensala, Ngudiankama

  • Authors: Nensala, Ngudiankama
  • Date: 2000
  • Subjects: Metal complexes Electrochemistry Photochemistry Pentachlorophenol
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:4328 , http://hdl.handle.net/10962/d1004989
  • Description: Photocatalytic reactions of tin diphthalocyanine, Sn ^IVPc₂ and anionic form of Nd^III, Dy^III, Eu^III, Tm^III and Lu^III diphthalocyanine complexes ( [Pc(-2)Nd^IIIpc(-2)]⁻ , [Pc(-2)Dy^IIIPc(-2)]⁻ , [Pc(-2)Eu^IIIPc(-2)⁻, [Pc(-2)Tm^IIlPc(-2)r and [Pc(-2)LuIIIpc(-2)]⁻ respectively) in the presence of CH₂CI₂, S0₂, pentachlorophenol (PCP), 4-chlorophenol (4-Cp) and thionyl chloride have been studied. Photoreactions involving lanthanide diphthalocyanines, filtered and unfiltered radiations were employed, whereas for photoreactions involving tin diphthalocyanine, only unfiltered radiation was employed. For lanthanide diphthalocyanine complexes, LnPce-, the photosensitization power increases with the decrease of the lanthanide ionic radii, implying that the photocatalytic activity of LnPc₂⁻ complexes is associated with the π-π interaction between both phthalocyanine rings. Thus, LuPc₂⁻ is a better photocatalyst than other lanthanide diphthalocyanine complexes. Photolysis ofSnPc₂ in an acetonitrile/dichloromethane solvent mixture, using unfiltered radiation from a tungsten lamp, results in the one-electron oxidation of this species to [Pc( -2 )Sn(IV)Pc(-1)]⁻. The relative quantum yields for the disappearance of SnPc₂ are in the order of 10⁻¹. The photoreaction of SnPc₂ is preceded by excitation to nπ* excited states, before been ,quenched by CH₂CI₂. The one-electron oxidation species, [Pc(-2)Sn(lV)pc(-1)]⁻ was also formed during the photolysis of SnPc₂ in dichloromethane containing S0₂, and with quantum yields of order of 10⁻³. Visible photolysis of [Pc( -2)Nd^IIIpc(-2)]⁻, [Pc(-2)Dy^IIIPc(-2)]⁻ and [Pc(-2)Lu^IIIpc(-2)]⁻ in N,N. dimethylformamide (DMF)/dichloromethane solvent mixture containing SO₂, results in the formation of the one-electron oxidation species, Pc(-2 )Nd^IIIpc(-1), Pc( -2) Dyi^IIIPc(-1) and Pc(-2)Lu^IIIpc(-1), respectively. The relative quantum yields are in the order of 10². The photoreactions are preceded by population of the excited triplet state,³π-π* [ LnPc₂]⁻ complex, before exchanging an electron with S0₂. The one-electron oxidation species of Dy^III and Lu^III diphthalocyanine complexes have also been formed from visible photolysis of [Pc(-2 )Dy^IIIPc(-2)]⁻and [Pc(-2)Lu^IIIpc(-2)]⁻in acetonitrile containing PCP. The PCP is reductively dechlorinated to tetra- and trichlorophenols. The quantum yields for the photosensitization reactions are in the order of 1 0⁻. Photolysis, using visible radiation from 220 W Quartzline lamp, of an aqueous solution of 4-Cp, saturated with oxygen and containing a suspension of solid [Pc(-2)Nd^IIIpc(-2)]⁻, results in the formation of benzoquinone, hydro quinone and 4-chlorocatechol. The quantum yields for the degradation of 4-Cp are in the order of 10⁻. Langmuir-Hinshelwood kinetic model shows the adsorption of 4-chlorophenol onto solid [Pc(-2)Nd^IIIpc(-2)]⁻. Lanthanide diphthalocyanine complexes ([Pc-2)Nd^IIIpc(-2)]⁻. [Pc(-2)Eu^IIIpc(-2)]⁻, (Pc(-2)Tm^IIIpc( -2)]⁻ and (Pc(-2)Lu^IIIpc(-2)]⁻) undergo one or two-electron oxidation in the presence of thionyl chloride. At low concentrations of SOCI₂(<10⁻⁴ mol dm⁻³) the visible yhotolysis of [Pc(-2 )LnPc(-2)]⁻ complexes result in the one-electron oxidation, giving neutral lanthanide diphthalocyanine species, Pc(-2)Ln^IIIpc(-1). The Pc(-2 )LnPc(-I) species undergoes one-electron photooxidation to [Pc(-I )LnPc( -I)]⁻ in dichloromethane and in the presence of SOC₁₂. At large concentrations of SOC₁₂ (>10⁻² mol dm⁻³), direct two-electron oxidation of the (Pc(-2 )LnPc - 2)]⁻ species to (Pc(-1)LnPc(-1)]⁻ occurs. Spectroelectrochemical behaviours of Sn^IVPc₂ have been also studied. The cyclic voltammetry ofSnPc₂ in CH₂CI₂/TBAP show two reduction couples at -0.56 V and -0.89 V versus saturated calomel electrode (SCE) and one oxidation couple at 0.35 V versus SCE. In DMFITEAP system, the reduction couples are observed at -0.44 V and -0.81 V versus SCE whereas the oxidation couple occurred at 0.43 V versus SCE. The oxidation couple corresponds to [Pc(-2 )Sn^IVPc(-2 )]/[Pc(-2)Sn^IVPc( -I)] . and the reduction couples to [Pc(-2)Sn^IVPc( -2 )]/[Pc(-2 )Sn^IVPc( -3 )]⁻ and [Pc(-2)Snl^IVPc( -3)] ⁻/[Pc(-3 )Sn^IVPc(-3)]²⁻, respectively. The electronic absorption spectra of these reduced and oxidized species are reported.
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  • Date Issued: 2000

Physiological, perceptual and other performance decrements in combat related tasks following prolonged heavy-load marching

- Clark, Lisa Anne

  • Authors: Clark, Lisa Anne
  • Date: 2000
  • Subjects: Performance -- Psychological aspects , Performance standards -- Case studies , Exercise -- Physiological aspects , Exercise -- Psychological aspects , Marching -- Physiological aspects , Soldiers -- Job stress
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:5130 , http://hdl.handle.net/10962/d1005209 , Performance -- Psychological aspects , Performance standards -- Case studies , Exercise -- Physiological aspects , Exercise -- Psychological aspects , Marching -- Physiological aspects , Soldiers -- Job stress
  • Description: In response to challenging situations physiological and psychological adaptations result in elevated levels of arousal and when these levels are 'optimal' performance is enhanced. There are however, limitations to the amount of physiological and mental stimulation one can tolerate, with cumulative fatigue effects being the outcome when stressful conditions are imposed on the individual over an extended period of time. As a result of the extreme physical and cognitive demands placed on military forces while in combat, with soldiers being thrust into battle and required to make critical life-or-death determining decisions followed by appropriate motor responses, the physical and psychological capabilities of the troops are pushed to maximal limits, often resulting in undesirable decrements in physical and mental performance, with consequential human and materiel losses. Thirty-two soldiers participated in a battery of combat-related field and laboratory tests, first under 'normal' conditions with no prior physical activity and then immediately after the participation of an intensive bout of exercise. Physiological and perceptual responses plus standard of performance were measured at various stages of testing. Results of the Rating of Perceived Exertion (RPE), Body Discomfort Scale and heart rate responses revealed significantly higher levels of psychophysical strai,n in response to the strenuous physical activity. Despite these findings, the electromyographic (EMG) activity and efficiency of the combat-related skills were not negatively affected. Rather, nominal improvements in post-activity performance were noted, specifically response time, and this was attributed to elevated arousal and activation as a result of the exercise that was of sufficient duration to enhance arousal without imposing long term cumulative fatigue effects.
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  • Date Issued: 2000

Pineapples in the Eastern Cape: a study of the farm economy and marketing patterns

- Strauss, Conrad Barend

  • Authors: Strauss, Conrad Barend
  • Date: 2000
  • Subjects: Pineapple industry -- South Africa -- Cape of Good Hope Pineapples -- Marketing Agriculture -- Economic aspects -- Eastern Cape
  • Language: English
  • Type: Book , Text
  • Identifier: http://hdl.handle.net/10962/2442 , vital:20291
  • Description: The major objective of this study was to seek a better knowledge and greater understanding of the factors associated with successful pineapple farming in the Eastern Cape Region of the Union of South Africa. As no previous investigation equally representative of commercial pineapple farming patterns in the Eastern Cape has been made, this study can be regarded as a pilot survey of the labour structures, rates of production, combination of enterprises, marketing channels and the suitability of various districts in the region of study for the production of pineapples. In addition, the history of the pineapple in South Africa will be traced briefly, and the position the Union holds as a supplier of pineapples on the world market, will be investigated. The importance of the Eastern Cape as a producer of pineapples in South Africa is well known, but is also unequivocally illustrated by the information in Table 1. According to estimates made by the Division of Economics and Markets for 1955/56 season, no less than 86.5 per cent of the total acreage planted to pineapples in South Africa, was located in this area. Bathurst, East London and Albany, three of the six districts included in the estimate, were particularly prominent. Taken together, they cultivated more than three-quarters of the total area planted to pineapples in the Eastern Cape, and nearly 70 per cent of the total for South Africa. The remaining quarter of the area cultivated in the Eastern Cape was located in the districts of Peddie, Komgha and Alexandria. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
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  • Date Issued: 2000

Portfolio of three projects

- Thomas, Lorraine

  • Authors: Thomas, Lorraine
  • Date: 2000
  • Subjects: Educational leadership Organizational change Educational change School management and organization -- South Africa
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1707 , http://hdl.handle.net/10962/d1003590
  • Description: Educational leadership and management is a very wide field of study with interdependent components that should form a chain reaction in order to bring about effective management. This study attempts to investigate planning in schools which is one of the educational leadership and management components or functions. Very little research work has been done on educational planning in the Ciskei schools. This is a shortcoming since the number of secondary schools has mushroomed in the late twentieth century. The Ciskei educational managers and parents need to know and take note of the possible situations in the various schools. This is opportune time, particularly that recent events, i.e. students' demands and strikes, are drawing parents closer to the education of their children. The researcher's experience of inspecting school administration since 1990 has reinforced his conviction that the managerial teams in the Ciskei secondary schools have little knowledge of management, and of planning in particular. Although the investigation is into secondary school administration, it is also pertinent to primary school planning. Management, i.e. school year-planning, control of work, staff development, appointment of teachers, policy governing students and teachers are discussed at length . Joint planning, i.e. a participative or consultative approach, and advance planning, are investigated in relation to the school year-programme. The existence of statutory bodies in the various schools is assessed in order to test parents' involvement in the education of their children. School tours are discussed in relation to students' involvement in the school activities. The analysis of the results highlights areas that require attention, and the recommendations given address the controversial issues in planning in the various schools.
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  • Date Issued: 2000

Possible crosstalk between signal transduction pathways in the induction of differentiation in HT-29 cells

- Jamie, Hajierah

  • Authors: Jamie, Hajierah
  • Date: 2000
  • Subjects: Cellular signal transduction , Cell differentiation
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:11096 , http://hdl.handle.net/10948/d1019684
  • Description: The investigation into the mechanisms by which compounds such as butyrate induce differentiation in HT-29 cells, is lacking. The colonic carcinoma cell line, HT-29, undergoes differentiation induction in the presence of butyrate and acetoacetate. The Caco-2 cell line spontaneously differentiates on contact inhibition. In this study, a signal transduction pathway involving ATP, cAMP, Ca2+ and the transcriptional factor CREB was investigated following suggestions that the energy state of the cell and diffferentiation are linked. The activity of the MAP kinase cascade, including possible crosstalk that may exist between these pathways was determined. The HT-29 cells were exposed to 5 mM acetoacetate, butyrate, DMSO and propionate. The results of this differentiation induction were compared to Caco-2 and HeLa cells, which are cervical carcinoma cells. It was found that ATP levels are decreased on differentiation induction in HT-29 cells, which, in turn affected the cAMP concentrations. Theoretically, the inducers do not have any effect on PDE 4 activity, and may facilitate the interaction between cAMP and PKA. Influx of Ca2+ into the cells was inhibited to a degree by the inducers, which was possibly overcome by crosstalk between the cAMP and Ca2+ pathways. CREB activation, lineage-specific gene expression, ERK activity and c-myc expression were all dependent on both the inducers used and the cell-type. PKA played a major role in CREB activation in acetoacetate- and butyrate -induced HT-29, Caco-2 and HeLa cells, while a2+/Calmodulin-dependent kinases I/IV may have a secondary role. Alkaline phosphatase expression in HeLa cells was independent of CREB. Evidence that crosstalk between the MAP kinase cascade and the REBactivation pathways exist, was illustrated by increased CREB activation on ERK inhibition in acetoacetate- and butyrate-induced HT-29 and HeLa cells. Also, the role that ERK played in the cells differed with inducer and cell-type. The dependence of cmyc expression on c-jun and c-fos, appeared to be differentiation induction- and celltype specific. Results from this study indicate the potential use of acetoacetate and butyrate as anti-cancer compounds.
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  • Date Issued: 2000

Pour Mieux t'Aimer

- Priscilia Ngando (lead vocal), Mevio-Mayo, Dany Mouanga, Mouasso (rhythm guitars), Aubin Sandjo, Scorpionkabambay, Mouche Bass (bass guitar), Dany Mouanga, Eric Sefu (solo guitar), Aubin Sandjo, Paul Balong (keyboard), Abel Massock, Fabo Claude, Nono (chorus), Moussa Haissam, Nana Mouskouri, Priscilia Ngando (composers), Aubin Sandjo (drum, percussion, keyboard), Alhadji Mallam Issa (talking drum), Moussa Haissam

Prade

- Beta Simon (performer), Joe (bass), Alfred Young (guitar), Koukougnon, Kalua Dayag (percussion), Amos Stephen (pianos), Brass: Andre Laourou (trumpet), Manu Yodan (sax), Pinheiro Michel (trombone), Astrid, Brou Julie, Liazou Ped (chorus), Soro Mamadou (djembe), Amos Stephen (arranged by), Liazou Ped (duet), Sea Charif, Djedje Honorat

Principals' perceptions of the management of staff appraisal in schools.

- Blaauw, Lindiwe Ellen

  • Authors: Blaauw, Lindiwe Ellen
  • Date: 2000
  • Subjects: Educational evaluation , Teachers -- Rating of
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:2011 , http://hdl.handle.net/10962/d1016080
  • Description: Teacher appraisal has long been a contentious and contested area in educational management. The recent implementation of a new system of appraisal in Eastern Cape Schools has led to renewed interest in the role and management of appraisal. The objective of this study was to investigate principals' perception of the management of staff appraisal. An interpretive paradigm was adopted and the research is a case study of four secondary schools in Port Elizabeth. Two methods were used in collecting data, namely, questionnaires and interviews. The content comparative method was used to analyse the data. The findings of this study showed areas of continuities and discontinuities with the literature and the new document on appraisal. There is a clear understanding among the principals interviewed that staff appraisal should be used to assess individual teacher performance and that it should also be developmental. There is clear support from the principals on the involvement of other stakeholders. They see the process as transformative and participatory. They find it acceptable and are willing to be involved. However, the findings also indicate a lack of readiness on the part of the principals to fully embrace a fully participative and developmental approach to appraisal. On the strength of these findings I conclude the thesis by making recommendations for policy, principals, teachers and for future researchers in the field.
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  • Date Issued: 2000

Professional development in environmental education in Zanzibar, Tanzania: distances encountered in a semi-distance learning course

- Heylings, Phillippa Frances

  • Authors: Heylings, Phillippa Frances
  • Date: 2000
  • Subjects: Environmental education -- Tanzania -- Zanzibar Distance education -- Tanzania -- Zanzibar Environmental education Distance education
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1715 , http://hdl.handle.net/10962/d1003598
  • Description: In Zanzibar, in 1995, opportunities for professional development in environmental education were minimal. Yet the demand for professional development was high, especially because of an emphasis on formal qualifications in the country. Credibility was afforded to forms of professional development, aimed at creating more ‘experts’. Ongoing environmental education practice was not achieving its objectives. Into this setting, which was culturally and socio-politically different from the South African context where it was developed, I introduced the Rhodes University Certificate and Gold Fields Participatory Course in Environmental Education (RU/GF); a non-formal, counter-hegemonic course which encouraged critical reflection on the dominant orientations to environmental education practice – including professional development. I used critical ethnographic and action research methods to explore my praxiological interest, the adaptation of the RU/GF curriculum to the Zanzibar context. During the research process, a decision was made to formally accredit the RU/GF course. This decision did not alter the course orientation or the learning process but opened up possibilities for future curriculum development processes. It allowed the students both a formal qualification necessary for status and promotion, and participation in a learning process that challenged the dominant paradigm on professional development and status from within the socio-political context. The research took on a reflexive orientation to research and environmental education. Through a dialectical development of theory, method and results, several important issues emerged. These deal with the ‘distances’ encountered in attempting to address some of the perceived dichotomies in professional development in environmental education through semi-distance learning: the distances between status and learning; the need for career upgrading and the type of learning considered appropriate for professional development in environmental education; the non-quantifiable aims associated with a reflexive orientation to professional development and formal assessment demands for measurable criteria; the democratisation of open-entry courses and the elitism of restricted access; the focus on individual growth and the attainment of a normative grade; theory and practice; and finally distances between learner, text and language. The research supports similar findings emerging from evaluation of the RU/GF course in South Africa and resonates with, and contributes to, issues concerning professional development in environmental education being considered internationally.
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  • Date Issued: 2000

Profile of paediatric psychosocial disorders in Frere Hospital and analysis of associated patterns of referrals

- Chukwuemeka, Gregory Adjuba

  • Authors: Chukwuemeka, Gregory Adjuba
  • Date: 2000
  • Subjects: Child psychopathology , Frere Hospital
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:2949 , http://hdl.handle.net/10962/d1002458 , Child psychopathology , Frere Hospital
  • Description: The profile of psychosocial disorders in children and the attendant patterns of referrals and health communication, were investigated within the context of a tertiary referral centre in the Eastern Cape Province. Literature on childhood disorders points to a high level of functional and substance related disorders in technologically developed countries of Europe and North America, in contrast to the developing countries of Asia and Africa, where the burden of infectious diseases and disorders of deprivation and lack still predominate in the profile of psychosocial disorders in children. In South Africa however, there is almost non-existent research on clinical psychosocial disorders profile and the research sets out to be an exploratory study in this area. A combination design was employed in which interviews and observations complemented a primarily quantitative descriptive cross sectional analysis of hospitalcase records. A pilot study was performed using an information gathering questionnaire and interviews, with findings subsequently explored in the main study. The International Classification of Diseases (ICD-10) (WHO, 1992) diagnostic categories were used to create a profile of all ailments in the paediatric unit. Psychosocial disorders both in terms of aetiology and illness course, can be viewed from the perspective of socialadjustment and functioning (in which there is a potential role of social factors as provoking, causal or modifying factors) (Williams &Clare, 1979); and the DSM-IV (Diagnostic and Statistical Manual of Mental Disorders) (American Psychiatric Association,1994) criteria was used to create the profile of these disorders in the paediatric unit at Frere Hospital which accounted for 45% of the ailments managed in one year. The derived profile is a picture in between the profile found in technologically advanced countries, and developing countries. While the infection burden and malnutrition appear to be readily contained or curtailed, there appears to be a serious problem with access to health care services which manifest especially at the level of perinatal events, with resultant high level of hypoxic brain damage and consequently mental retardation and varying levels of impairment or disability. These medical consequences in turn are fundamentally psychosocial, requiring psychosocial care with heavy reliance on strategic communication and referrals. The referrals in respect of psychosocial disorders are mainly at primary care level revolving around local health care clinics, private clinics, special schools and rehabilitation centres.
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  • Date Issued: 2000

Prosper

- Ma Sane, Do Sagna, Yade (vocals), Toto (guitar), Race, Magx Thiam (keyboards), Galass, Mbaye Joola (percussion), Beuz (drums), Studio 2000

Ramde

- Beta Simon (performer), Joe (bass), Alfred Young (guitar), Koukougnon, Kalua Dayag (percussion), Amos Stephen (pianos), Brass: Andre Laourou (trumpet), Manu Yodan (sax), Pinheiro Michel (trombone), Astrid, Brou Julie, Liazou Ped (chorus), Soro Mamadou (djembe), Amos Stephen (arranged by), Liazou Ped (duet), Sea Charif, Djedje Honorat

Red Clay

- Boubacar N'Dour, Prince Charles Alexander, Youssou N'Dour (written by), Youssou N'Dour (vocal), Habib Faye (bass), Manu Katche (drums), Jimi Mbaye, Pape Oumar Ngom (guitar), Babacar Faye (Senegalese percussion), Jerome Lemmier (keyboards, arranger, programmer), Assane Thiam (sabar talking drum), Pierre Bianchi

Remix Abissa

- Betika (composer, performer), Ntoumba Minka (arranger, bass guitar)), Ernest Mvouama (synthesiser), Briskard Kouadio (accoustic guitar), Dallas, Briskard Kouadio (solo guitar), Kouaho (percussion), Donguy, Betuel, Ntoumba, Minka, Betika, Kouaho, Jean Gnanzou (chorus), Awa Diabate, Sanota Doumbie (chorus), Ernest Mvouama

Replacement of seven 132/66 kv distance protection schemes by means of a generic relay implemented as a strategic spare

- Harris, Raymond Trevor

  • Authors: Harris, Raymond Trevor
  • Date: 2000
  • Subjects: Protective relays , Electric power systems -- Protection
  • Language: English
  • Type: Thesis , Masters , MTech
  • Identifier: vital:10808 , http://hdl.handle.net/10948/34 , Protective relays , Electric power systems -- Protection
  • Description: Eskom is experiencing problems in the field of protection maintenance and in-service breakdowns which negatively influence the quality of electrical supply to the consumer, an integral component of the utility business. These facts initiated the research into the further development of a generic relay to be implemented as a strategic spare for the replacement of several schemes operating within Eskom’s southern region. These include the electromechanical, solid state and numerical distance protection relay and scheme failures on the 132 / 66 kV feeder network. Hence, the primary objective of the research is to develop, test and configure the strategic spare in terms of software and peripheral hardware for the input and output terminal connections, generic equations and settings for the purpose of the scheme replacements. The various schemes are assessed for stepped distance and permissive intertripping for three or single pole operation. This is done in conjunction with the internal and external circuit diagrams in order to understand the detailed operation of the scheme and to ensure the effective implementation of the strategic spare. The generic relay is configured for the emergency replacement of the various schemes during in-service breakdowns. This constitutes a temporary installation and therefore the downtime in essence, of all the distance protection schemes that require replacement, is limited to a minimum. This dissertation therefore explores the implementation of the strategic spare.
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  • Date Issued: 2000

Replication of maximal work output levels in able-bodied workers and candidates for disability assessments: benchmark data and guidelines

- Charteris, J, James, Jonathan P

  • Authors: Charteris, J , James, Jonathan P
  • Date: 2000
  • Language: English
  • Type: Article
  • Identifier: vital:6752 , http://hdl.handle.net/10962/d1009332
  • Description: [From the introduction]: Injured-at-work employees, when the impairments are musculo-skeletal, and the injury beyond dispute, may be faced with formal rehabilitation or informal recuperation, sometimes preceded by surgical intervention, or they may be exposed to a process of application for compensation, part of which may involve medico-legal assessments. Questions that need to be addressed somewhere in this process will determine whether the impairment is of short duration, chronic or irreparable, and will involve determination also of the severity of the impairment and the issue of the workers’ capacity to return to the former occupation versus the need to find a new employment niche commensurate with the disabled workers’ capabilities. Inevitably in this process, if it is formal, someone will need to assess the musculoskeletal strength of the injured employee and make pronouncements as to physical capacity and work-readiness. In the absence of clinical ergonomists in South Africa this task falls to a variety of professionals, some well and others poorly trained to make these determinations. Most often the assessments of work-readiness are crude, amounting to little more than unsubstantiable value judgements of supervisors or health professionals not well versed in human performance capabilities. Increasingly however, better qualified professionals are making themselves available to meet the growing demands of a more employee-centred working ethos in this country. This paper is targeted at those medical, paramedical and ergonomics professionals who already have the facilities and the expertise to make use of the technique outlined herein, to further enhance their already sound means of job-related disability assessment.
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  • Date Issued: 2000

Research Portfolio

- Nts'aba, Likengkeng

  • Authors: Nts'aba, Likengkeng
  • Date: 2000
  • Subjects: School management and organization -- South Africa -- Eastern Cape , School board members -- South Africa -- Eastern Cape -- Decision making , Education -- Political aspects -- South Africa -- Eastern Cape
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:2051 , http://hdl.handle.net/10962/d1018259
  • Description: The move towards greater democracy and participation in our education system is legislated quite succinctly in our South African Schools Act. The Act furthermore, and more importantly for this case study, posits that decision-making should be democratic in nature and our schools should eventually become governed in a collaborative and co-operative manner. Other policy texts such as the Labour Relations Act and the South African Constitution canonise the demand for a democratic South African society. This study investigates how democratic decision-making practices are taking place in an East London Secondary School namely Ebenezer Majombozi High. Even though distinct links exist between management and governance arms of schools, this study concentrates predominantly on decision-making within the school governing body and touches briefly on management thinking trends as a theoretical background to the kind of management at the school. What makes the school interesting as a case study is its rich history and its location in a deprived and impoverished township environment. The school was also part of the ex-Department of Education and Training, the black educational department of the past apartheid state. The kind of research undertaken was in the form of unstructured personal :interviews with influential stakeholders at the school. Some of these stakeholders fonn part of the school governing body and the questions asked probed forms of governance at the school and how decision-making impacted on the overall school governance. The research fmdings acknowledges that decision-making does occur democratically at the school but that the practical implementation of positive consensual decisions are rarely realized. The school governing body only meets to deal with crises underpinned by a lack of learning and teaching and has not even debated the policies within the South African Schools Act. The study also argues that only by building capacity within the school and empowering the stakeholders, can constructive participation by all become a reality.
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  • Date Issued: 2000

Research portfolio

- Ngwane, Mandisa Sweetness

Research Projects Portfolio.

- Schudel, Ingrid Joan

  • Authors: Schudel, Ingrid Joan
  • Date: 2000
  • Subjects: Environmental education -- South Africa -- Eastern Cape
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:2015 , http://hdl.handle.net/10962/d1016368
  • Description: This collection of research projects tells a story of the time I have spent with members of the Albany Working for Water team; including preparations made, lessons learned and insights gained. My first project was to analyse the methodology of a research paper. I chose the paper by Arjen Wals because I intended, like him, to examine people's perceptions of environmental issues. From this paper I gained ideas for a qualitative research process and learnt the importance of theoretical and methodological consistency. My next project was to present a report on my research into the perceptions of workrelated environmental issues among the Albany Working for Water workers. From this research I gained insight into the knowledge of the workers and also some of the misconceptions that they have about social and ecological issues. I made educational recommendations based on these insights. This experience inspired me to initiate a play with a group of the workers about alien plant eradication. The process of developing this play formed the basis for a research paper that I have submitted as another research project. Concurrent with the development of the play, I conducted a fourth research project that was a situational analysis of the Albany Workingfor Water Project. I hoped that this analysis would provide useful insight into the context of the above two projects. Overall, I hope the story reflects how I have grown through the learning experiences I shared with the Albany Working for Water team. I would like to extend to my thanks to all those who assisted and shared my journey with me.
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  • Date Issued: 2000
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