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- SADTU

  • Authors: SADTU
  • Date: 1993
  • Subjects: SADTU
  • Language: English
  • Type: text
  • Identifier: http://hdl.handle.net/10962/155115 , vital:39856
  • Description: As the elected minute secretary, from the Second AGC 1992, I took over the portfolio as acting Regional Secretary when Mundisa Sinuka resigned in October 1992. In SADTU, we can only have a successful union if all our branches are functioning effectively and our members are committed. Members on the ground have been demotivated and this makes our task all the more difficult. Branches tend to work during times of crisis and it should be borne in mind that SADTU is not a crisis union but is there to educate, bur id. protect and defend the rights of teachers.
  • Full Text:
  • Date Issued: 1993

Gnouman Ke La

- Sali Sidibe (composition, lyrics, lead vocal), Boubacar Kane (djembe), Aminata Diabate, Fatim Sissoko (backing vocals), Rakesh Toure (keyboards), Mamadou Coulibaly (N'Bolon), Harouna Samake (N'goni), Zoumana Tereka (Violin), Samba Dioakite (Balafon), Sterns Africa label, Samassa Records

Granitic series and their economic geology

- Kerber, Paulo Augusto

  • Authors: Kerber, Paulo Augusto
  • Date: 1993
  • Subjects: Granite , Geology, Economic
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:4969 , http://hdl.handle.net/10962/d1005581 , Granite , Geology, Economic
  • Description: The granitic rocks are subdivided into four series: tholeiitic, alkaline, calc-alkaline and mobilizates. These series can be formed from melting of mantle material (M-type granites) or from crustal rocks. There are granitic rocks formed from the mixing of these two magmas types. The rocks formed from crustal anatexis are subdivided into those formed from igneous rocks (I-type granites) and those formed from meta-sedimentary rocks (S-type granites). The former has similar characteristics to the mantle-derived granitoids. The mineral deposits related to igneous or mantle derived magma usually are Cu-Au, CUI Cu-Mo, Mo porphyries and have high oxygen fugacity and magnetic susceptibility (magnetite series). The Sn-W deposits usually are related to magma derived from meta-sedimentary or igneous rocks derived magma with low oxygen fugacity and magnetic susceptibility (ilmenite series). According to the tectonic setting, the granitoids rocks are classified as: Andino type, West Pacific type, Hercyno type, Caledonian type and Anorogenic (A-type granites).
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  • Date Issued: 1993

Guidelines on Exam, Study and Sabbatical Leave

- NUMSA

  • Authors: NUMSA
  • Date: 1993
  • Subjects: NUMSA
  • Language: English
  • Type: text
  • Identifier: http://hdl.handle.net/10962/173783 , vital:42409
  • Full Text:
  • Date Issued: 1993

History reading comprehension in black secondary schools : a Ciskei study

- Poswa, Mandisa

  • Authors: Poswa, Mandisa
  • Date: 1993
  • Subjects: History -- Study and teaching (Secondary) -- South Africa -- Ciskei
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1555 , http://hdl.handle.net/10962/d1003437
  • Description: This thesis examines briefly the problems of learning and understanding history when the subject is taught through the medium of a second language. It assesses the difficulty levels (for first language speakers) of the history textbooks commonly used in Ciskei secondary schools and considers the implications of these levels for second language speakers. It assesses the ability of 400 pupils in standard 8 and standard 10 to comprehend an English text which is deliberately written at a lower level of difficulty than that of the current secondary school texts. Comparisons are made of the comprehension scores of those pupils whose answers are written in English with those who are allowed to answer in Xhosa on questions based on the simple text. Finally, it compares the quality of the pupils' answers in Xhosa and English. Tentative recommendations are made about the language implications of history teaching which emerge from the results of the research.
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  • Date Issued: 1993

IEC CONFERENCE ON PROFIT SHARING

- NUM

  • Authors: NUM
  • Date: 1993
  • Subjects: NUM
  • Language: English
  • Type: text
  • Identifier: http://hdl.handle.net/10962/174134 , vital:42445
  • Description: At present, profit sharing does not fit into the philosophy of any trade unions in South Africa. It is not a part of the policy of any union I know about. Where profit sharing schemes exist and are accepted by the unions, this is because of special circumstances. This talk is in three parts: First, I will explain where my union, the National Union of Mineworkers, has accepted profit sharing schemes and why it has done so. Secondly, I will outline the different levels of agreements that we have negotiated on profit sharing and the principles we have agreed should govern such schemes Thirdly, I will speak of the implementation of the schemes, and their potential for providing a basis for greater worker participation in the enterprises which have negotiated profit sharing agreements.
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  • Date Issued: 1993

Imbongi in Profile

- Kaschula, Russell H

  • Authors: Kaschula, Russell H
  • Date: 1993
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/124689 , vital:35649 , https://www.jstor.org/stable/40238706
  • Description: Today, many elements of the tradition have been discarded or adapted; nevertheless, the concept of singing praises still retains an identifiable character which is based on past tradition. In this tradition, the imbongi' s relationship with his audience and the function of his izibongo (poetry) within his society are of utmost importance. Any analysis of this communitarian art form will therefore have to take into account the context of the performance, the nature of the audience, and the role of the imbongi in a society which continues to be subject to socio-cultural and political pressures of unused intensity. My intention in this article is to provide a case study of Bongani Sitole, a contemporary imbongi, in order to instance some of the ways in which the tradition has adapted. During the course of the discussion mention will also be made of other iimbongi.
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  • Date Issued: 1993

Information systems and creative responses : inaugural lecture delivered at Rhodes University

- Sainsbury, Malcolm

Innovations in gold extraction

- Davidson, Raymond John

Insect herbivores on the exotic weeds Solanum elaeagnifolium Cavanilles and S. sisymbriifolium Lamarck (Solanaceae) in South Africa

- Hill, Martin P, Hulley, Patrick E, Olckers, T

  • Authors: Hill, Martin P , Hulley, Patrick E , Olckers, T
  • Date: 1993
  • Subjects: To be catalogued
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/451454 , vital:75050 , https://hdl.handle.net/10520/AJA10213589_58
  • Description: In South Africa, the weeds Solanum elaeagnifolium Cavanilles and S. sisymbriifolium Lamarck (Solanaceae) sustain little observable damage from herbivorous insects. Relatively few insect species occur on these plants and at low individual densities. Since native insects are not important in the natural control of S. elaeagnifolium and S. sisymbriifolium, additional agents should be imported for the biological control of these weeds. The absence of important local herbivores means that the possibility of interaction between these and potential biological control agents need not be a consideration in choosing the agents. The nature and numbers of the insect herbivores of S. elaeagnifolium and S. sisymbriifolium are compared with those on another solanaceous weed, S. mauritianum Scopoli, and on native Solanum species. These insect species are discussed relative to plant defence mechanisms.
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  • Date Issued: 1993

Interaction of cyanide with iron (II) phthalocyanine

- Nyokong, Tebello

  • Authors: Nyokong, Tebello
  • Date: 1993
  • Subjects: To be catalogued
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/295497 , vital:57347 , xlink:href="https://doi.org/10.1039/DT9930003601"
  • Description: The kinetics and equilibria for the reaction between cyanide and iron (II) phthalocyanine [Fe(pc)](H2pc = phthalocyanine) in dimethyl sulfoxide (dmso) were studied at 25 °C. The complex [Fe(pc)(CN)2]2– is formed in two consecutive pseudo-first-order processes with k2f= 17.5 ± 0.8 dm3 mol–1 s–1 and k3f= 0.20 ± 0.05 dm3 mol–1 s–1, where k2f and k3f are the rate constants for the binding of the first and second cyanide ligands, respectively. The equilbrium constants were fund to be K2= 3.0 × 103 dm3 mol–1 and K3= 5.7 × 102 dm3 mol–1, for the formation of [Fe(pc)(CN)(dmso)]– and [Fe(pc)(CN)2]2–, respectively.
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  • Date Issued: 1993

Interactions between figs (Ficus spp., Moraceae) and fig wasps (Chalcidoidea, Agaonidae)

- Ware, Anthony Brian

  • Authors: Ware, Anthony Brian
  • Date: 1993
  • Subjects: Fig -- South Africa Fig wasp -- South Africa Pollination Agaonidae Chalcid wasps
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:5719 , http://hdl.handle.net/10962/d1005405
  • Description: Fig trees (Ficus spp., Moraceae) and fig wasps (Chalcidoidea, Agaonidae) are uniquely associated. In one fig wasp group, the pollinators (Agaoninae), each species is generally host species-specific. The relationship is one of obligate mutualism where the wasps provide pollination services and in return utilises some of the ovules for larval development. Non-pollinating fig wasps (generally belonging to subfamilies other than the Agaoninae) may be gallers or parasitoids, and can also be host species-specific. In the accompanying studies we examined the factors governing the interactions between fig wasps and their host trees. Surveys of fig trees and their associated pollinating fig wasps conducted in southern Africa, Madagascar and The Comores generally confirmed their specific relationships. An examination of F. sycomorlls in Madagascar resulted in the reclassification of F. sakalavarum as a distinct species with its own specific pollinator species. Biological and chemical evidence is presented demonstrating that the pollinators were able to distinguish their hosts through volatiles which emanated from the figs when they were ready to be pollinated. Environmental factors were found to influence wasp behaviour. Ambient temperature governed the timing of wasp emergence from their natal figs. When dispersing from their natal figs, the fig wasps flew upwards and then were blown downwind. Once nearing trees bearing figs ready to be pollinated, the wasps lost height and flew upwind towards the trees. E. baijnathi females apparently avoided figs which already contained a conspecific foundress. Scanning electron microscope studies of pollinating female fig wasp antennae showed that while all the species possessed multiporous plate sensilla, in only a few species were these sensilla elongated. Multiporous plate sensilla elongation is rare or absent among other female chalcids and may have evolved within the Agaoninae in order to facilitate their location on receptive host figs. Pollinator choice specificity appears to break down in a number of cases. In the first case examined, two pollinator species were recorded from the figs of African F. sycomorus. One. C. arabicus, pollinates the figs while the other, C. galili, acts as a 'cuckoo' by utilising some of ovules for oviposition without providing pollen. In the second case three pollinating fig wasp species were recorded from the rigs of F. lutea. Two were found to be incidental visitors and were not specifically attracted to the tree. The hybrid seeds from these crosses were successfully germinated but the seedlings did not grow passed the cotyledon stage of their development. In the concluding study the consequences of Ficus phenology and the structure of the fig's unusual inflorescence on the nonpollinating fig wasp community were examined. Various factors affecting the population levels and species richness were also examined. Future possible research directions were discussed.
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  • Date Issued: 1993

Is holding hands with bosses the way forward for the workers

- COSATU, TGWU

  • Authors: COSATU, TGWU
  • Date: 1993
  • Subjects: COSATU, TGWU
  • Language: English
  • Type: text
  • Identifier: http://hdl.handle.net/10962/178623 , vital:42962
  • Description: The COSATU leadership is asking all its affiliates to discuss a way forward for South African workers. The COSATU National Office Bearers have produced a document titled "COSATU 1993 Discussion Paper on a Way Forward". It deals with the "Reconstruction Accord". This Accord is a plan for organised labour during this period of transition in South Africa. Since this plan is laying the foundations for a future South Africa, the COSATU document is therefore a plan for the future of the working class. In this short paper we are going to answer the most important questions concerning this COSATU document: Is this the way forward for the workers? Is this plan going to free the workers from the chains of poverty and suffering? Is this plan going to lay the foundations for workers control of the economy, of politics and of the country? Is this plan going to stop retrenchments and starvation wages? In other words, we are going to study the COSATU leadership 's proposals from the point of view of the needs of the workers.
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  • Date Issued: 1993

Kinetics of the reaction of cyanide with ruthenium phthalocyanine complexes

- Nyokong, Tebello, Guthrie-Strachan, Jeffry

  • Authors: Nyokong, Tebello , Guthrie-Strachan, Jeffry
  • Date: 1993
  • Subjects: To be catalogued
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/295509 , vital:57348 , xlink:href="https://doi.org/10.1016/S0020-1693(00)85128-2"
  • Description: Kinetic studies of the reaction of cyanide with (CO)(DMF)RuPc and (DMSO)2RuPc in DMF are reported. In the presence of a large excess of cyanide, the (CN)2RuPc complex is formed by pseudo first order kinetics. The reaction is first order in both cyanide and phthalocyanine, with specific rate constants of 5.2×10−2 and 7.2×10−2 M−1 s−1 for reactions of cyanide with (CO)(DMF)RuPc and (DMSO)2RuPc, respectively. The rate constants correspond to the coordination of the second cyanide ligand to the ruthenium phthalocyanine species.
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  • Date Issued: 1993

King William's Town during the South African War, 1899-1902 an urban, social, economic and cultural history

- Webb, D. A

  • Authors: Webb, D. A
  • Date: 1993
  • Subjects: South African War, 1899-1902 , King William's Town (South Africa)--Population , King William's Town (South Africa)--Economic conditions , King William's Town (South Africa)--Social conditions , King William's Town (South Africa)--Race relations , King William's Town (South Africa --Commerce , King William's Town (South Africa)--Industries , Imvo Zabantsundu (Newspaper) , Local government--South Africa-- King William's Town , Crime--South Africa--King William's Town , King William's Town (South Africa)--History , South Africa--History, Military
  • Language: English
  • Type: Thesis , Masters , M.A.
  • Identifier: vital:2571 , http://hdl.handle.net/10962/d1002424 , South African War, 1899-1902 , King William's Town (South Africa)--Population , King William's Town (South Africa)--Economic conditions , King William's Town (South Africa)--Social conditions , King William's Town (South Africa)--Race relations , King William's Town (South Africa --Commerce , King William's Town (South Africa)--Industries , Imvo Zabantsundu (Newspaper) , Local government--South Africa-- King William's Town , Crime--South Africa--King William's Town , King William's Town (South Africa)--History , South Africa--History, Military
  • Description: This thesis examines the urban social, economic and cultural history of a community under stress and in transition at the turn of the century. Two themes run through the study: how the residents responded to long-term challenges such as the decline of the town in relation to its nearest urban neighbour, the increasing significance of the black population of the town and district, and the end of the millennium; and secondly, the effects of the South African War on King William's Town society and how the residents perceived the various stresses it exerted on the town. Chapter 1, by way of introduction, provides a general overview of the history of King William's Town and of the current state of historical research on the town. It also examines historiographical strands reflected in this study, focusing on urban history, social history, local history and the new cultural history. The chapter ends with a brief note on sources and methodology. Chapter 2 sets the scene be examining the population of the town and district in relation to its eastern Cape neighbours. It briefly explores the settlement patterns in the town, and the social divisions and racial attitudes manifested by its inhabitants. The third chapter provides a study of the town's economy with particular emphasis on the mercantile sector, agriculture and manufacturing. The informal sector, domestic service and labour relations are also explored. Political processes in this period are dealt with in Chapter 4. The 1898 elections and the re-alignment of political allegiances, the outbreak of the war, the main political issues that emerged and the suppression of the Imvo Zabantsundu newspaper are discussed. Chapter 5 provides an examination of military aspects of the town and district during the war. The impact of the imperial garrison, the attitudes of the residents to the war and the imposition and effects of martial law are amongst the topics covered. The next chapter deals with municipal matters, with particular reference to the townspeople's attitudes to Borough status, public health and sanitation, municipal locations and residential segregation, and the various successes and failures of the Borough Council during the war. The seventh chapter focuses on crime, legislation and social control in the town. The number and type of criminal incidents during the period are analyzed, the various laws establishing the parameters of society and the manner in which these were applied are examined. Chapter 8 seeks to define the cultural contours of the town, looking at religion, the large number of different clubs and societies, sport and recreation. It explores the way in which cultural pursuits were both a reflection and a reinforcement of the social, political and economic order. The ninth and final chapter links the preceding themes with regard to the effects of the war on King William's Town society, with particular reference to the mentalité of the community as displayed in the attitudes of the residents to the various developments discussed in the body of the thesis.
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  • Date Issued: 1993

Kuhauzela

- Venancio Mbande and his Chopi timbila xylophone group, Tracey, Andrew T N

Labour Research Service - Negotiations skills course

- NUM

  • Authors: NUM
  • Date: 1993
  • Subjects: NUM
  • Language: English
  • Type: text
  • Identifier: http://hdl.handle.net/10962/176112 , vital:42660
  • Full Text:
  • Date Issued: 1993

Larval development of Gilchristella aestuaria (Gilchrist, 1914)(Pisces: Clupeidae) from southern Africa

- Haigh, Eliria H, Whitfield, Alan K

  • Authors: Haigh, Eliria H , Whitfield, Alan K
  • Date: 1993
  • Subjects: To be catalogued
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/447533 , vital:74654 , https://hdl.handle.net/10520/AJA00445096_482
  • Description: The larval development of the southern African endemic clupeid Gilchristella aestuaria is descriptionbed and illustrated from specimens collected in the Swartvlei and Sundays estuarine systems of the Cape Province. Free embryos have no visible gut, unpigmented eyes and bodies, and are dependent on the yolk sac contents for nutrnion. This stage lasts until about 4 mm body length (BL) when the eyes become pigmented and a gut becomes visible. Between 4 mm and 7 mm BL melanophores on the ventral aspect of the body form. and the dorsal and caudal fin anlagen develop. Between 7 mm and 8 mm BL the swimbladder forms, flexion occurs and the anal fin anlage develops. By the to mm BL stage most of the skeletal elements have begun to differentiate, with the vertebral centra already showing signs of ossification. General ossification commences between t 2 mm and 13 mm BL. All unpaired fins have the adult complement of rays by 15 mm BL. Scalation starts between 16 mm and 17 mm BL and is complete by 20 mm BL. Body depth increases gradually. from about 5% of BL in the early larval stages to >14% of BL in the juveniles. The pre-anal length decreases from about 87% of BL in the larvae to approximately 69% of BL in the juveniles. Head length increases from approximately 11 % of BL in the larvae to 24-29% of BL in the juveniles. The larval snout is initially 2% of BL, increasing to 7% of BL in the juvenile stages owing to the development of jaw elements.
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  • Date Issued: 1993

Lateritisation and secondary gold distribution with particular reference to Western Australia

- Coxon, Brian Duncan

  • Authors: Coxon, Brian Duncan
  • Date: 1993
  • Subjects: Laterite -- Australia , Gold ores -- Geology -- Australia
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:4974 , http://hdl.handle.net/10962/d1005586 , Laterite -- Australia , Gold ores -- Geology -- Australia
  • Description: Lateritisation is associated with tropical climates and geomorphic conditions of peneplanation where hydromorphic processes of weathering predominate. Laterites are products of relative (residual) and absolute(chemical) accumulation after leaching of mobile constituents. Their major element chemistry is controlled by the aluminous character of bedrock and drainage. Bauxitisation is characterised by residual gibbsite neoformation and lateritisation, by both residual accumulation and hydromorphic precipitation of goethite controlled by the redox front at the water table. The laterite forms part of a weathering profile that is underlain by saprock, saprolite, the mottled zone and overlain by a soil horizon. The secondary gold in laterites has its source invariably with mineralised bedrock. The distribution of secondary gold is controlled by mechanical eluviation and hydromorphic processes governed by organic, thiosulphate and chloride complexing. The precipitation of secondary gold is controlled by pH conditions, stability of the complexing agent and ferrolysis. Gold-bearing laterites are Cainozoic in age and are best developed on stable Archean and Proterozoic cratons that have suffered epeirogenesis since lateritisation. Mechanical eluviation increases in influence at the expense of hydromorphic processes as a positive function of topographic slope and degradation rate. Gradients greater than 10⁰ are not conducive for lateritisation, with latosols forming instead. High vertical degradation rates may lead to the development of stone lines. In the Western Australian case, post-laterite aridification has controlled the redistribution of secondary gold at levels marked by stabilisation of the receding palaeowater table. Mineable reserves of lateritic ore are located at Boddington, Westonia and Gibson toward the south-west of the Yilgarn Block. A significant controlling variable appears to be the concentration of chloride in the regolith. Based on the Boddington model, the laterite concentrates the following elements from bedrock gold lodes: i) Mo, Sb, W, Hg, Bi and Au as mobile constituents. ii) As and Pb as immobile constituents. Geochemical sampling of ferruginous lag after bedrock and laterite has provided dispersed anomalies that are easily identifiable. "Chalcophile corridors" up to 150 km in length are defined broadly by As and Sb but contain more discrete anomalies of Bi, Mo, Ag, Sn, W, Se or Au, in the Yilgarn Block. The nature of the weathered bedrock, the tabular distribution of secondary gold ore deposition and the infrastructural environment lends the lateritic regolith to low cost, open-cut mining. The western Australian lateritic-gold model perhaps can be adapted and modified for use elsewhere in the world.
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  • Date Issued: 1993

Mabandla

- Venancio Mbande and his Chopi timbila xylophone group, Tracey, Andrew T N

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