The notion of physicality in vocal training for the performer in South African theatre, with particular reference to the Alexander technique
- Authors: Cox, Frances Jayne
- Date: 1991
- Subjects: Voice culture , Alexander technique , Drama -- Study and teaching
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2134 , http://hdl.handle.net/10962/d1002366 , Voice culture , Alexander technique , Drama -- Study and teaching
- Description: Voice training has been influenced by separatist attitudes which have allowed for classes which train the body to be separate from those which train the voice. This study acknowledges that to train an actor in separate compartments and then expect the completeness of human expression in performance, is to train under false pretences. There is a need to address the imbalance of separatism and this is examined within the context of voice training. An holistic approach to voice training forms the basis of the argument, which focuses on the need to re-educate the notion of physicality in voice training. Chapter one proposes an understanding of the notion of physicality by drawing on the attitudes of selected theatre practitioners towards the physical nature of the theatre encounter. The expressive energies of the actor's body are responsible for the physicalisation of a play; for this reason the movement of voice and speech is not only examined as source movement, but also as the movement of an actor's response and communication. Chapter two examines some practices which led to attitudes of separatism in voice training, and introduces prevalent practices which are attempting to involve the energy of the physical experience. Chapter three proposes that the Alexander technique be used as the foundation for an awareness of individual physicality. Where chapter one examines the theory of this notion, chapter three proposes an experiential understanding of the same. The Alexander technique is a training in effective body use and it's principles are fundamental to an awareness of body use and functioning. It is argued that these principles should underlie a re-education of physicality. The final chapter of the thesis argues for physicality in South African voice training programmes which would complement the physicality of contemporary theatre forms. It is hoped that this study will provide further incentive for the continued review and adjustment of drama training in South Africa.
- Full Text:
- Authors: Cox, Frances Jayne
- Date: 1991
- Subjects: Voice culture , Alexander technique , Drama -- Study and teaching
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2134 , http://hdl.handle.net/10962/d1002366 , Voice culture , Alexander technique , Drama -- Study and teaching
- Description: Voice training has been influenced by separatist attitudes which have allowed for classes which train the body to be separate from those which train the voice. This study acknowledges that to train an actor in separate compartments and then expect the completeness of human expression in performance, is to train under false pretences. There is a need to address the imbalance of separatism and this is examined within the context of voice training. An holistic approach to voice training forms the basis of the argument, which focuses on the need to re-educate the notion of physicality in voice training. Chapter one proposes an understanding of the notion of physicality by drawing on the attitudes of selected theatre practitioners towards the physical nature of the theatre encounter. The expressive energies of the actor's body are responsible for the physicalisation of a play; for this reason the movement of voice and speech is not only examined as source movement, but also as the movement of an actor's response and communication. Chapter two examines some practices which led to attitudes of separatism in voice training, and introduces prevalent practices which are attempting to involve the energy of the physical experience. Chapter three proposes that the Alexander technique be used as the foundation for an awareness of individual physicality. Where chapter one examines the theory of this notion, chapter three proposes an experiential understanding of the same. The Alexander technique is a training in effective body use and it's principles are fundamental to an awareness of body use and functioning. It is argued that these principles should underlie a re-education of physicality. The final chapter of the thesis argues for physicality in South African voice training programmes which would complement the physicality of contemporary theatre forms. It is hoped that this study will provide further incentive for the continued review and adjustment of drama training in South Africa.
- Full Text:
The pineal gland as a model to elucidate the primary mode of action of sympathoactive agents
- Authors: Welman, Alan David
- Date: 1991
- Subjects: Pineal gland , Cythochemistry
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3876 , http://hdl.handle.net/10962/d1001610
- Description: An attempt was made to use the pineal gland as a model for the study of the primary mode of action of sympathoactive agents. Two drugs were investigated, viz. alpha-methyldopa and ephedrine whose mode of action is not entirely clear. Organ cultures of pineal glands from rats treated chronically with alpha-methyldopa showed enhanced conversion of radioactive serotonin to melatonin (aMT) , as well as its precursor Nacetylserotonin (aHT). This treatment was also found to raise Nacetyltransferase (NAT) activity. These increases associated with alpha-methyldopa treatment were further enhanced by the beta-adrenergic agonist, isoproterenol, suggesting a supersensitivity-type effect occurring at the level of the beta-receptor. A subsequent binding study, however, showed a decrease in beta-receptor binding with exposure to alpha-methyldopa, providing mitigating evidence against the occurrence of a supersensitivity phenomenon. It is possible that a metabolite of alpha-methyldopa acts as an alpha 1 and beta-adrenergic agonist, resulting in greater melatonin (aMT) and N-acetylserotonin (aHT) synthesis than by a beta-adrenergic agonist, isoproterenol. Combined treatment of pineals with alpha-methyldopa and an alphareceptor blocker, phentolamine, resulted in melatonin (aMT) , Nacetylserotonin (aHT) , and N-acetyltransferase (NAT) activity levels which were lower than those obtained with alpha-methyldopa treatment alone, thus confirming the alpha-adrenergic activity of the metabolite of alpha-methyldopa. Additional pineal metabolites were isolated and measured simultaneously in the organ culture experiments. Organ cultures of rat pineal glands treated with ephedrine showed raised levels of melatonin (aMT) and N-acetylserotonin (aHT). Treatment with ephedrine also produced raised N-acetyltransferase activity. A further enhancement of these parameters was induced by norepinephrine, suggesting a supersensitivity-type effect occurring at the level of the beta-adrenergic receptor. Rats were treated with reserpine (a norepinephrine depleter) and the pineals exposed to ephedrine. Endogenous norepinephrine normally released by the action of ephedrine was thus absent, and under these conditions, levels of melatonin (aMT) and N-acetylserotonin (aHT) were reduced. N-acetyltransferase (NAT) activity was also reduced, but maintained levels pointing to substantial adrenergic activity of ephedrine as well as norepinephrine released by virtue of the drug's action. A subsequent binding study showed a decrease in beta-adrenergic receptor binding with exposure to ephedrine and a further decrease in ephedrine treated pineals from reserpine treated rats, thus ruling out the occurrence of a supersensitivity phenomenon. It is possible that both ephedrine and released norepinephrine have alpha- and beta-receptor activity. Additional pineal metabolites were isolated and measured in the organ culture experiments. A 16-hour time profile of the production of melatonin (aMT) and N-acetylserotonin (aHT) with norepinephrine and ephedrine treatment provided useful information regarding the course of action of the two agents. A pineal cell-culture system was developed and exposed to ephedrine and norepinephrine. N-acetyltransferase (NAT) activity levels measured after exposure to these agents were raised, confirming the adrenergic activity of both in the model. Finally, an HPLC system coupled to a UV detector was used in an attempt to measure melatonin (aMT) extracted from pineal organ culture media. The results showed that melatonin could be measured by this method, however, a more sensitive detection system was recommended for future work.
- Full Text:
- Authors: Welman, Alan David
- Date: 1991
- Subjects: Pineal gland , Cythochemistry
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3876 , http://hdl.handle.net/10962/d1001610
- Description: An attempt was made to use the pineal gland as a model for the study of the primary mode of action of sympathoactive agents. Two drugs were investigated, viz. alpha-methyldopa and ephedrine whose mode of action is not entirely clear. Organ cultures of pineal glands from rats treated chronically with alpha-methyldopa showed enhanced conversion of radioactive serotonin to melatonin (aMT) , as well as its precursor Nacetylserotonin (aHT). This treatment was also found to raise Nacetyltransferase (NAT) activity. These increases associated with alpha-methyldopa treatment were further enhanced by the beta-adrenergic agonist, isoproterenol, suggesting a supersensitivity-type effect occurring at the level of the beta-receptor. A subsequent binding study, however, showed a decrease in beta-receptor binding with exposure to alpha-methyldopa, providing mitigating evidence against the occurrence of a supersensitivity phenomenon. It is possible that a metabolite of alpha-methyldopa acts as an alpha 1 and beta-adrenergic agonist, resulting in greater melatonin (aMT) and N-acetylserotonin (aHT) synthesis than by a beta-adrenergic agonist, isoproterenol. Combined treatment of pineals with alpha-methyldopa and an alphareceptor blocker, phentolamine, resulted in melatonin (aMT) , Nacetylserotonin (aHT) , and N-acetyltransferase (NAT) activity levels which were lower than those obtained with alpha-methyldopa treatment alone, thus confirming the alpha-adrenergic activity of the metabolite of alpha-methyldopa. Additional pineal metabolites were isolated and measured simultaneously in the organ culture experiments. Organ cultures of rat pineal glands treated with ephedrine showed raised levels of melatonin (aMT) and N-acetylserotonin (aHT). Treatment with ephedrine also produced raised N-acetyltransferase activity. A further enhancement of these parameters was induced by norepinephrine, suggesting a supersensitivity-type effect occurring at the level of the beta-adrenergic receptor. Rats were treated with reserpine (a norepinephrine depleter) and the pineals exposed to ephedrine. Endogenous norepinephrine normally released by the action of ephedrine was thus absent, and under these conditions, levels of melatonin (aMT) and N-acetylserotonin (aHT) were reduced. N-acetyltransferase (NAT) activity was also reduced, but maintained levels pointing to substantial adrenergic activity of ephedrine as well as norepinephrine released by virtue of the drug's action. A subsequent binding study showed a decrease in beta-adrenergic receptor binding with exposure to ephedrine and a further decrease in ephedrine treated pineals from reserpine treated rats, thus ruling out the occurrence of a supersensitivity phenomenon. It is possible that both ephedrine and released norepinephrine have alpha- and beta-receptor activity. Additional pineal metabolites were isolated and measured in the organ culture experiments. A 16-hour time profile of the production of melatonin (aMT) and N-acetylserotonin (aHT) with norepinephrine and ephedrine treatment provided useful information regarding the course of action of the two agents. A pineal cell-culture system was developed and exposed to ephedrine and norepinephrine. N-acetyltransferase (NAT) activity levels measured after exposure to these agents were raised, confirming the adrenergic activity of both in the model. Finally, an HPLC system coupled to a UV detector was used in an attempt to measure melatonin (aMT) extracted from pineal organ culture media. The results showed that melatonin could be measured by this method, however, a more sensitive detection system was recommended for future work.
- Full Text:
The pineal gland as a model to elucidate the primary mode of action of sympathoactive agents
- Authors: Welman, Alan David
- Date: 1991
- Subjects: Pineal gland , Cythochemistry
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4279 , http://hdl.handle.net/10962/d1002005 , Pineal gland
- Description: An attempt was made to use the pineal gland as a model for the study of the primary mode of action of sympathoactive agents. Two drugs were investigated, viz. alpha-methyldopa and ephedrine whose mode of action is not entirely clear. Organ cultures of pineal glands from rats treated chronically with alpha-methyldopa showed enhanced conversion of radioactive serotonin to melatonin (aMT) , as well as its precursor Nacetylserotonin (aHT). This treatment was also found to raise Nacetyltransferase (NAT) activity. These increases associated with alpha-methyldopa treatment were further enhanced by the beta-adrenergic agonist, isoproterenol, suggesting a supersensitivity-type effect occurring at the level of the beta-receptor. A subsequent binding study, however, showed a decrease in beta-receptor binding with exposure to alpha-methyldopa, providing mitigating evidence against the occurrence of a supersensitivity phenomenon. It is possible that a metabolite of alpha-methyldopa acts as an alpha 1 and beta-adrenergic agonist, resulting in greater melatonin (aMT) and N-acetylserotonin (aHT) synthesis than by a beta-adrenergic agonist, isoproterenol. Combined treatment of pineals with alpha-methyldopa and an alphareceptor blocker, phentolamine, resulted in melatonin (aMT) , Nacetylserotonin (aHT) , and N-acetyltransferase (NAT) activity levels which were lower than those obtained with alpha-methyldopa treatment alone, thus confirming the alpha-adrenergic activity of the metabolite of alpha-methyldopa. Additional pineal metabolites were isolated and measured simultaneously in the organ culture experiments. Organ cultures of rat pineal glands treated with ephedrine showed raised levels of melatonin (aMT) and N-acetylserotonin (aHT). Treatment with ephedrine also produced raised N-acetyltransferase activity. A further enhancement of these parameters was induced by norepinephrine, suggesting a supersensitivity-type effect occurring at the level of the beta-adrenergic receptor. Rats were treated with reserpine (a norepinephrine depleter) and the pineals exposed to ephedrine. Endogenous norepinephrine normally released by the action of ephedrine was thus absent, and under these conditions, levels of melatonin (aMT) and N-acetylserotonin (aHT) were reduced. N-acetyltransferase (NAT) activity was also reduced, but maintained levels pointing to substantial adrenergic activity of ephedrine as well as norepinephrine released by virtue of the drug's action. A subsequent binding study showed a decrease in beta-adrenergic receptor binding with exposure to ephedrine and a further decrease in ephedrine treated pineals from reserpine treated rats, thus ruling out the occurrence of a supersensitivity phenomenon. It is possible that both ephedrine and released norepinephrine have alpha- and beta-receptor activity. Additional pineal metabolites were isolated and measured in the organ culture experiments. A 16-hour time profile of the production of melatonin (aMT) and N-acetylserotonin (aHT) with norepinephrine and ephedrine treatment provided useful information regarding the course of action of the two agents. A pineal cell-culture system was developed and exposed to ephedrine and norepinephrine. N-acetyltransferase (NAT) activity levels measured after exposure to these agents were raised, confirming the adrenergic activity of both in the model. Finally, an HPLC system coupled to a UV detector was used in an attempt to measure melatonin (aMT) extracted from pineal organ culture media. The results showed that melatonin could be measured by this method, however, a more sensitive detection system was recommended for future work
- Full Text:
- Authors: Welman, Alan David
- Date: 1991
- Subjects: Pineal gland , Cythochemistry
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4279 , http://hdl.handle.net/10962/d1002005 , Pineal gland
- Description: An attempt was made to use the pineal gland as a model for the study of the primary mode of action of sympathoactive agents. Two drugs were investigated, viz. alpha-methyldopa and ephedrine whose mode of action is not entirely clear. Organ cultures of pineal glands from rats treated chronically with alpha-methyldopa showed enhanced conversion of radioactive serotonin to melatonin (aMT) , as well as its precursor Nacetylserotonin (aHT). This treatment was also found to raise Nacetyltransferase (NAT) activity. These increases associated with alpha-methyldopa treatment were further enhanced by the beta-adrenergic agonist, isoproterenol, suggesting a supersensitivity-type effect occurring at the level of the beta-receptor. A subsequent binding study, however, showed a decrease in beta-receptor binding with exposure to alpha-methyldopa, providing mitigating evidence against the occurrence of a supersensitivity phenomenon. It is possible that a metabolite of alpha-methyldopa acts as an alpha 1 and beta-adrenergic agonist, resulting in greater melatonin (aMT) and N-acetylserotonin (aHT) synthesis than by a beta-adrenergic agonist, isoproterenol. Combined treatment of pineals with alpha-methyldopa and an alphareceptor blocker, phentolamine, resulted in melatonin (aMT) , Nacetylserotonin (aHT) , and N-acetyltransferase (NAT) activity levels which were lower than those obtained with alpha-methyldopa treatment alone, thus confirming the alpha-adrenergic activity of the metabolite of alpha-methyldopa. Additional pineal metabolites were isolated and measured simultaneously in the organ culture experiments. Organ cultures of rat pineal glands treated with ephedrine showed raised levels of melatonin (aMT) and N-acetylserotonin (aHT). Treatment with ephedrine also produced raised N-acetyltransferase activity. A further enhancement of these parameters was induced by norepinephrine, suggesting a supersensitivity-type effect occurring at the level of the beta-adrenergic receptor. Rats were treated with reserpine (a norepinephrine depleter) and the pineals exposed to ephedrine. Endogenous norepinephrine normally released by the action of ephedrine was thus absent, and under these conditions, levels of melatonin (aMT) and N-acetylserotonin (aHT) were reduced. N-acetyltransferase (NAT) activity was also reduced, but maintained levels pointing to substantial adrenergic activity of ephedrine as well as norepinephrine released by virtue of the drug's action. A subsequent binding study showed a decrease in beta-adrenergic receptor binding with exposure to ephedrine and a further decrease in ephedrine treated pineals from reserpine treated rats, thus ruling out the occurrence of a supersensitivity phenomenon. It is possible that both ephedrine and released norepinephrine have alpha- and beta-receptor activity. Additional pineal metabolites were isolated and measured in the organ culture experiments. A 16-hour time profile of the production of melatonin (aMT) and N-acetylserotonin (aHT) with norepinephrine and ephedrine treatment provided useful information regarding the course of action of the two agents. A pineal cell-culture system was developed and exposed to ephedrine and norepinephrine. N-acetyltransferase (NAT) activity levels measured after exposure to these agents were raised, confirming the adrenergic activity of both in the model. Finally, an HPLC system coupled to a UV detector was used in an attempt to measure melatonin (aMT) extracted from pineal organ culture media. The results showed that melatonin could be measured by this method, however, a more sensitive detection system was recommended for future work
- Full Text:
The precambrian iron-formations in the Limpopo belt as represented by the magnetite quartzite deposits at Moonlight, Koedoesrand area, Northern Transvaal
- Authors: Badenhorst, Jaco Cornelis
- Date: 1991 , 2013-02-20
- Subjects: Iron ores -- Geology -- South Africa , Quartzite -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5064 , http://hdl.handle.net/10962/d1013309
- Description: This dissertation is based largely on data that was accumulated during the execution of an exploration program by Iscor Ltd in the Northern Transvaal. The program included geological mapping, geophysical surveys and drilling, on Precambrian iron-formations in the Central Zone of the Limpopo Belt. The structure, stratigraphy, metamorphism, and economic importance of the magnetite quartzites and associated lithologies of the Moonlight prospect are discussed. The lithologies underlying the Moonlight prospect area consist of various pink- and grey-banded gneisses and pink granulite, together with a variety of metasedimentary supracrustal rock-types and concordant serpentinite bodies. The gneissic rock-types consist of chlorite-quartz-feldspar gneiss, chlorite-quartz-feldspar augen gneiss, hornblende-quartz-feldspar gneiss, biotite-quartz-feldspar gneiss, felsic and mafic granulite, and foliated amphibolite. The metasedimentary lithologies are represented by calc-silicates and marble, white quartz-feldspar granulite, magnetite quartzite, metaquartzite and garnet-bearing granulite and gneiss (metapelites). The concordant ultramafic bodies consist of serpentinite with lesser amphibolite, dunite, and chromitite. Intrusive pegmatites and diabase dykes are also present in the prospect area. Metamorphism reached granulite-facies, and more than one retrqgrade metamorphic event is recognized . Amphibolite-facies assemblages are present, but it is uncertain whether they represent another retrograde event . Polyphase deformation has produced intense and complex folding , resulting in irregular magnetite quartzite orebodies. The high metamorphic grades have resulted in medium- grained recrystallization of the magnetite-quartzites with a loss of prominent banding often associated with these rock-types . The magnetite quartzite occurs as three seperate but related ore zones, consisting of one or more ore-bands seperated by other lithologies. All three zones form poor outcrops and suboutcrops in a generally flat lying and sand covered area. · Although representing a low-grade iron ore (32% total Fe), the magnetite quartzite deposits at Moonlight are regarded as potentially viable due to the large opencast tonnages available at low stripping ratios, and the relatively cheap and easy beneficiation process needed to produce a magnetite concentrate with 69-70% total Fe.
- Full Text:
- Authors: Badenhorst, Jaco Cornelis
- Date: 1991 , 2013-02-20
- Subjects: Iron ores -- Geology -- South Africa , Quartzite -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5064 , http://hdl.handle.net/10962/d1013309
- Description: This dissertation is based largely on data that was accumulated during the execution of an exploration program by Iscor Ltd in the Northern Transvaal. The program included geological mapping, geophysical surveys and drilling, on Precambrian iron-formations in the Central Zone of the Limpopo Belt. The structure, stratigraphy, metamorphism, and economic importance of the magnetite quartzites and associated lithologies of the Moonlight prospect are discussed. The lithologies underlying the Moonlight prospect area consist of various pink- and grey-banded gneisses and pink granulite, together with a variety of metasedimentary supracrustal rock-types and concordant serpentinite bodies. The gneissic rock-types consist of chlorite-quartz-feldspar gneiss, chlorite-quartz-feldspar augen gneiss, hornblende-quartz-feldspar gneiss, biotite-quartz-feldspar gneiss, felsic and mafic granulite, and foliated amphibolite. The metasedimentary lithologies are represented by calc-silicates and marble, white quartz-feldspar granulite, magnetite quartzite, metaquartzite and garnet-bearing granulite and gneiss (metapelites). The concordant ultramafic bodies consist of serpentinite with lesser amphibolite, dunite, and chromitite. Intrusive pegmatites and diabase dykes are also present in the prospect area. Metamorphism reached granulite-facies, and more than one retrqgrade metamorphic event is recognized . Amphibolite-facies assemblages are present, but it is uncertain whether they represent another retrograde event . Polyphase deformation has produced intense and complex folding , resulting in irregular magnetite quartzite orebodies. The high metamorphic grades have resulted in medium- grained recrystallization of the magnetite-quartzites with a loss of prominent banding often associated with these rock-types . The magnetite quartzite occurs as three seperate but related ore zones, consisting of one or more ore-bands seperated by other lithologies. All three zones form poor outcrops and suboutcrops in a generally flat lying and sand covered area. · Although representing a low-grade iron ore (32% total Fe), the magnetite quartzite deposits at Moonlight are regarded as potentially viable due to the large opencast tonnages available at low stripping ratios, and the relatively cheap and easy beneficiation process needed to produce a magnetite concentrate with 69-70% total Fe.
- Full Text:
The sedimentology of the Zerrissene turbidite system, Damara Orogen, Namibia
- Authors: Swart, Roger
- Date: 1991
- Subjects: Sedimentology Sediments (Geology) -- Namibia Sedimentation and deposition Turbidites
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5000 , http://hdl.handle.net/10962/d1005613
- Description: The Zerrissene turbidite system of central-western Namibia is a late Proterozoic sequence which consists of dominantly siliciclastic turbidites interbedded with minor turbiditic and hemipelagic marbles. The basin in which these sediments were deposited is located at the junction of the coastal and intra-cratonic arms of the Pan-African Damara Orogen, and an understanding of the sedimentary evolution of this basin is therefore important to the understanding of the development of the orogen as a whole. One major and two minor phases of folding have deformed the sediments, but the grade of metamorphism is low and sedimentary structures are often well preserved. Further, the area lies entirely within the Namib Desert and the lack of vegetation cover results in good outcrops providing an unusual opportunity for examining a large Precambrian turbidite system. The system consists of five formations: three siliciclastic and two mixed carbonatesiliciclastic units. The floor of the system is not exposed, and the oldest sedimentary rocks which outcrop are siliciclastics of the Zebrapiits Formation. This is overlain successively by the Brandberg West Formation (dominantly calcareous), the Brak River Formation (siliciclastic), the Gemsbok River Formation (calcareous) and the Amis River Formation (siliciclastic). Nine silicilastic turbidite facies have been recognised in the basin. These are facies A₂ (disorganised onglomerates), B₁ (horizontally laminated to massive greyackes), C₂ ("classical" turbidites), Dl (sandstone-shale couplets with base cut-out Bouma sequences), D₂ (sandstone-shale couplets with less sand than shale and base cut-out Bouma sequences), E (coarse, discontinuous sandstone-shale couplets), F (slumped units), G (shale) and H (glacial dropstones). Four facies are associated with the carbonate horizons, and these carbonate facies are given the suffix c to distinguish them from similar siliciclastic facies. These are facies Ac (disorganised and graded marble breccias), facies Cc (graded carbonates), facies Gc (hemi-pelagic marbles) and facies G (pelagic shales). The basal Zebrapiits Formation is made up of relatively thin packages of thin- to thickbedded, laterally continuous facies D₁, D₂ and B₁ beds encased in thick envelopes of shale. This type of sequence is typical of a distal lobe-fringe, and requires an unconfined basin-floor on which it can develop. The overlying Brandberg West Formation consists of a basal portion of interbedded facies Cc and G, followed by a sequence dominanted by facies Gc. This sequence is interpreted as representing outer-apron carbonate turbidites, derived from multiple point sources (facies Cc), with background pelagic settling (facies G) overlain by hemi-pelagic deposits (facies Gc). A reversal back to siliciclastic turbidites followed with deposition of the Brak River Formation. This sequence comprises relatively thick packages of laterally continuous facies B₁, D₁, and D₂ beds sandwiched between facies G shales, a succession characteristic of a lobe to lobe-fringe environment with intermittent abandonment of lobes. An unconfined basin floor adjacent to a passive margin is required for the development of this type of sequence. Glacial dropstones (facies H) are found in the upper portions of this formation, and slumped beds are also present (facies F), but are uncommon. The facies F beds are only found in association with facies H and are therefore considered to be genetically related. Slumping of beds was possibly caused by an oversupply of sediment from ice-rafting which caused instability. The overlying Gemsbok River Formation has a sequence similar to the Brandberg West Formation in that the basal portion consists of interbedded facies Cc and G, which is overlain by a thick sequence of largely facies Gc beds. Minor facies Ac beds occur near the top of the overall sequence. This formation is interpreted as an outer-apron succession with the facies Ac beds representing distal inner-apron deposits, indicating progradation of the system. The youngest unit in the basin, the Amis River Formation, shows strong lateral variation from west to east. In the west the sequence comprises laterally continuous facies B₁, C₂, D₁ and D₂ with rare, discontinuous facies E beds. Facies G is relatively minor in the sequence. In the east the succession is dominated by facies D₁, D₂ and G, and this succession is interpreted as a sequence of distal turbidites which were deposited on a basin-plain. The system developed by aggradation rather than progradation as only minor cycles are developed. Geochemical and petrological features indicate that the entire siliciclastic system was derived from a granite-recycled orogen terrane. Palaeocurrent data are unreliable because of the deformation, but transport was initially from the south-west, moving later to the west and north-west. The provenance of the carbonates is uncertain as reliable palaeocurrent indicators are rare, but they could have been derived either from South America or from the extensive carbonate deposits developed on the north-western margins of the basin. The Zenissene siliciclastic turbidite system represents the distal portion of a major submarine turbidite system, the more proximal parts of which now lie west of the exposed basin, either under the Atlantic Ocean or in eastern South America. The calcareous deposits developed as an apron adjacent to a multiple point source, the position of which is at present unknown.
- Full Text:
- Authors: Swart, Roger
- Date: 1991
- Subjects: Sedimentology Sediments (Geology) -- Namibia Sedimentation and deposition Turbidites
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5000 , http://hdl.handle.net/10962/d1005613
- Description: The Zerrissene turbidite system of central-western Namibia is a late Proterozoic sequence which consists of dominantly siliciclastic turbidites interbedded with minor turbiditic and hemipelagic marbles. The basin in which these sediments were deposited is located at the junction of the coastal and intra-cratonic arms of the Pan-African Damara Orogen, and an understanding of the sedimentary evolution of this basin is therefore important to the understanding of the development of the orogen as a whole. One major and two minor phases of folding have deformed the sediments, but the grade of metamorphism is low and sedimentary structures are often well preserved. Further, the area lies entirely within the Namib Desert and the lack of vegetation cover results in good outcrops providing an unusual opportunity for examining a large Precambrian turbidite system. The system consists of five formations: three siliciclastic and two mixed carbonatesiliciclastic units. The floor of the system is not exposed, and the oldest sedimentary rocks which outcrop are siliciclastics of the Zebrapiits Formation. This is overlain successively by the Brandberg West Formation (dominantly calcareous), the Brak River Formation (siliciclastic), the Gemsbok River Formation (calcareous) and the Amis River Formation (siliciclastic). Nine silicilastic turbidite facies have been recognised in the basin. These are facies A₂ (disorganised onglomerates), B₁ (horizontally laminated to massive greyackes), C₂ ("classical" turbidites), Dl (sandstone-shale couplets with base cut-out Bouma sequences), D₂ (sandstone-shale couplets with less sand than shale and base cut-out Bouma sequences), E (coarse, discontinuous sandstone-shale couplets), F (slumped units), G (shale) and H (glacial dropstones). Four facies are associated with the carbonate horizons, and these carbonate facies are given the suffix c to distinguish them from similar siliciclastic facies. These are facies Ac (disorganised and graded marble breccias), facies Cc (graded carbonates), facies Gc (hemi-pelagic marbles) and facies G (pelagic shales). The basal Zebrapiits Formation is made up of relatively thin packages of thin- to thickbedded, laterally continuous facies D₁, D₂ and B₁ beds encased in thick envelopes of shale. This type of sequence is typical of a distal lobe-fringe, and requires an unconfined basin-floor on which it can develop. The overlying Brandberg West Formation consists of a basal portion of interbedded facies Cc and G, followed by a sequence dominanted by facies Gc. This sequence is interpreted as representing outer-apron carbonate turbidites, derived from multiple point sources (facies Cc), with background pelagic settling (facies G) overlain by hemi-pelagic deposits (facies Gc). A reversal back to siliciclastic turbidites followed with deposition of the Brak River Formation. This sequence comprises relatively thick packages of laterally continuous facies B₁, D₁, and D₂ beds sandwiched between facies G shales, a succession characteristic of a lobe to lobe-fringe environment with intermittent abandonment of lobes. An unconfined basin floor adjacent to a passive margin is required for the development of this type of sequence. Glacial dropstones (facies H) are found in the upper portions of this formation, and slumped beds are also present (facies F), but are uncommon. The facies F beds are only found in association with facies H and are therefore considered to be genetically related. Slumping of beds was possibly caused by an oversupply of sediment from ice-rafting which caused instability. The overlying Gemsbok River Formation has a sequence similar to the Brandberg West Formation in that the basal portion consists of interbedded facies Cc and G, which is overlain by a thick sequence of largely facies Gc beds. Minor facies Ac beds occur near the top of the overall sequence. This formation is interpreted as an outer-apron succession with the facies Ac beds representing distal inner-apron deposits, indicating progradation of the system. The youngest unit in the basin, the Amis River Formation, shows strong lateral variation from west to east. In the west the sequence comprises laterally continuous facies B₁, C₂, D₁ and D₂ with rare, discontinuous facies E beds. Facies G is relatively minor in the sequence. In the east the succession is dominated by facies D₁, D₂ and G, and this succession is interpreted as a sequence of distal turbidites which were deposited on a basin-plain. The system developed by aggradation rather than progradation as only minor cycles are developed. Geochemical and petrological features indicate that the entire siliciclastic system was derived from a granite-recycled orogen terrane. Palaeocurrent data are unreliable because of the deformation, but transport was initially from the south-west, moving later to the west and north-west. The provenance of the carbonates is uncertain as reliable palaeocurrent indicators are rare, but they could have been derived either from South America or from the extensive carbonate deposits developed on the north-western margins of the basin. The Zenissene siliciclastic turbidite system represents the distal portion of a major submarine turbidite system, the more proximal parts of which now lie west of the exposed basin, either under the Atlantic Ocean or in eastern South America. The calcareous deposits developed as an apron adjacent to a multiple point source, the position of which is at present unknown.
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The shadowed corners of sunlit ruins: Gothic elements in twentieth century children's adventure fiction
- Authors: Wagenaar, Peter Simon
- Date: 1991
- Subjects: Children's literature -- 20th century -- History and criticism , Gothic literature
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2250 , http://hdl.handle.net/10962/d1002293 , Children's literature -- 20th century -- History and criticism , Gothic literature
- Description: This thesis examines the way in which children's adventure fiction makes use of Gothic features, how these features have been modified for a younger audience and how these modifications have been influenced by other developments in children's and popular fiction: Chapter One sets out to define the nature of Gothic and isolate those aspects of it relevant to the proposed study. It puts forward a theory to account for the movement of Gothic trends into later children's fiction. Chapter Two examines the use of landscape, setting and atmospheric effects in Gothic and the way in which children's fiction has used similar trappings to create similar effects. Children's fiction, emphasising pleasurable excitement rather than fear has, however, muted these effects somewhat and played down the role of the supernatural, so intrinsic to Gothic. Chapter Three emphasises the Gothic's use of stereotypes, focusing on the portrayal of heroes and heroines. Those of children's fiction are portrayed very similarly to those of Gothic and the chapter compares and, on occasion, contrasts them noting, inter alia, their adherence to rigid moral codes and narrowly defined norms of masculine and feminine behaviour. Chapter Four looks at the portrayal of villains and the way in which their appearance defines them as such (as, indeed, does that of heroes and heroines). It examines in some detail their relationship to and interaction with the heroes and heroines, noting, for example, the 'pseudo-parental' role of villains who are characteristically older and in socially approved positions to exert power over heroes and heroines. The Conclusion addresses the fantasy aspect of these novels,referred to several times in passing in the course of earlier chapters, and comments on how the features detailed in Chapters Two, Three and Four all operate within the conventions of a fantasy.
- Full Text:
- Authors: Wagenaar, Peter Simon
- Date: 1991
- Subjects: Children's literature -- 20th century -- History and criticism , Gothic literature
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2250 , http://hdl.handle.net/10962/d1002293 , Children's literature -- 20th century -- History and criticism , Gothic literature
- Description: This thesis examines the way in which children's adventure fiction makes use of Gothic features, how these features have been modified for a younger audience and how these modifications have been influenced by other developments in children's and popular fiction: Chapter One sets out to define the nature of Gothic and isolate those aspects of it relevant to the proposed study. It puts forward a theory to account for the movement of Gothic trends into later children's fiction. Chapter Two examines the use of landscape, setting and atmospheric effects in Gothic and the way in which children's fiction has used similar trappings to create similar effects. Children's fiction, emphasising pleasurable excitement rather than fear has, however, muted these effects somewhat and played down the role of the supernatural, so intrinsic to Gothic. Chapter Three emphasises the Gothic's use of stereotypes, focusing on the portrayal of heroes and heroines. Those of children's fiction are portrayed very similarly to those of Gothic and the chapter compares and, on occasion, contrasts them noting, inter alia, their adherence to rigid moral codes and narrowly defined norms of masculine and feminine behaviour. Chapter Four looks at the portrayal of villains and the way in which their appearance defines them as such (as, indeed, does that of heroes and heroines). It examines in some detail their relationship to and interaction with the heroes and heroines, noting, for example, the 'pseudo-parental' role of villains who are characteristically older and in socially approved positions to exert power over heroes and heroines. The Conclusion addresses the fantasy aspect of these novels,referred to several times in passing in the course of earlier chapters, and comments on how the features detailed in Chapters Two, Three and Four all operate within the conventions of a fantasy.
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The shifting focus of theology : from texts to questions to praxis : inaugural lecture delivered at Rhodes University
- Authors: Gaybba, Brian P
- Date: 1991
- Subjects: Theology , Theology -- Methodology
- Language: English
- Type: Text
- Identifier: vital:628 , http://hdl.handle.net/10962/d1020697 , ISBN 0868102199
- Description: Inaugural lecture delivered at Rhodes University , Rhodes University Libraries (Digitisation)
- Full Text:
- Authors: Gaybba, Brian P
- Date: 1991
- Subjects: Theology , Theology -- Methodology
- Language: English
- Type: Text
- Identifier: vital:628 , http://hdl.handle.net/10962/d1020697 , ISBN 0868102199
- Description: Inaugural lecture delivered at Rhodes University , Rhodes University Libraries (Digitisation)
- Full Text:
The Springfontein prospect : a case study of a tertiary age epithermal hot spring deposit in the Eastern Cape
- Authors: Nichols, Richard Lionel
- Date: 1991
- Subjects: Hot springs -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5058 , http://hdl.handle.net/10962/d1012963
- Description: The Springfontein Prospect is a Tertiary aged epithermal Hot Spring deposit that was investigated for precious metal mineralisation. It is located some 14 kilometres due west of East London (Cape Province), within Beaufort Group sediments and Karoo dolerite. Prior to the work described in this case study, the location was known for it's abundant plant fossils and barite mineralisation. A gossan sample collected near the main barite vein returned 1,07 g/t Au and 26,6 g/t Ag. Remote sensing studies of the site revealed a set of north-south lineaments paralleling the barite vein system. Geophysical surveys confirmed this orientation and revealed an extensive alteration system underlying the prominent sinter terrace. A detailed soil geochemical survey returned elevated values in the classical epithermal gold mineralisation element suite (Rg, Tl, As, Bi, Sb, Te, Mo, Ba and Pb - Bonham, 1986). Trenching of geochemical anomalies revealed zones of intense argillic alteration and vein stockworks). Four percussion and three diamond drill holes intersected a 'feeder-fissure' system of veins, alteration and brecciation, but failed to repeat gold levels seen at surface. Mineralogical and petrographic studies of the cores determined temperatures of formation of important indicator minerals (e.g. adularia and zeolites). Litho-geochemical work revealed mercury (and thallium) to be most elevated in the feeder systems. Stratigraphic and paleontological observations determined that the Springfontein Tertiary deposit was clearly different to the other siliceous (silcrete) units that crop out in the Eastern Cape region. A number of distinguished visitors to the prospect, with epithermal deposit experience, confirmed that the characteristics and dimensions of the system is within those of mineralised deposits elsewhere. A brief review of current epithermal models are presented. The conceptual geological model for the Springfontein prospect evolved through the exploration programme. The final consensus is that it best fits Bonham's (1986) alkalic model and the Tertiary epithermal event was sustained by rifting associated with the break-up of Gondwanaland.
- Full Text:
- Authors: Nichols, Richard Lionel
- Date: 1991
- Subjects: Hot springs -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5058 , http://hdl.handle.net/10962/d1012963
- Description: The Springfontein Prospect is a Tertiary aged epithermal Hot Spring deposit that was investigated for precious metal mineralisation. It is located some 14 kilometres due west of East London (Cape Province), within Beaufort Group sediments and Karoo dolerite. Prior to the work described in this case study, the location was known for it's abundant plant fossils and barite mineralisation. A gossan sample collected near the main barite vein returned 1,07 g/t Au and 26,6 g/t Ag. Remote sensing studies of the site revealed a set of north-south lineaments paralleling the barite vein system. Geophysical surveys confirmed this orientation and revealed an extensive alteration system underlying the prominent sinter terrace. A detailed soil geochemical survey returned elevated values in the classical epithermal gold mineralisation element suite (Rg, Tl, As, Bi, Sb, Te, Mo, Ba and Pb - Bonham, 1986). Trenching of geochemical anomalies revealed zones of intense argillic alteration and vein stockworks). Four percussion and three diamond drill holes intersected a 'feeder-fissure' system of veins, alteration and brecciation, but failed to repeat gold levels seen at surface. Mineralogical and petrographic studies of the cores determined temperatures of formation of important indicator minerals (e.g. adularia and zeolites). Litho-geochemical work revealed mercury (and thallium) to be most elevated in the feeder systems. Stratigraphic and paleontological observations determined that the Springfontein Tertiary deposit was clearly different to the other siliceous (silcrete) units that crop out in the Eastern Cape region. A number of distinguished visitors to the prospect, with epithermal deposit experience, confirmed that the characteristics and dimensions of the system is within those of mineralised deposits elsewhere. A brief review of current epithermal models are presented. The conceptual geological model for the Springfontein prospect evolved through the exploration programme. The final consensus is that it best fits Bonham's (1986) alkalic model and the Tertiary epithermal event was sustained by rifting associated with the break-up of Gondwanaland.
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The synthesis of sound with application in a MIDI environment
- Authors: Kesterton, Anthony James
- Date: 1991
- Subjects: Computer sound processing -- Research , Music -- Data processing -- Research , MIDI (Standard)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4678 , http://hdl.handle.net/10962/d1006701 , Computer sound processing -- Research , Music -- Data processing -- Research , MIDI (Standard)
- Description: The wide range of options for experimentation with the synthesis of sound are usually expensive, difficult to obtain, or limit the experimenter. The work described in this thesis shows how the IBM PC and software can be combined to provide a suitable platform for experimentation with different synthesis techniques. This platform is based on the PC, the Musical Instrument Digital Interface (MIDI) and a musical instrument called a digital sampler. The fundamental concepts of sound are described, with reference to digital sound reproduction. A number of synthesis techniques are described. These are evaluated according to the criteria of generality, efficiency and control. The techniques discussed are additive synthesis, frequency modulation synthesis, subtractive synthesis, granular synthesis, resynthesis, wavetable synthesis, and sampling. Spiral synthesis, physical modelling, waveshaping and spectral interpolation are discussed briefly. The Musical Instrument Digital Interface is a standard method of connecting digital musical instruments together. It is the MIDI standard and equipment conforming to that standard that makes this implementation of synthesis techniques possible. As a demonstration of the PC platform, additive synthesis, frequency modulation synthesis, granular synthesis and spiral synthesis have been implemented in software. A PC equipped with a MIDI interface card is used to perform the synthesis. The MIDI protocol is used to transmit the resultant sound to a digital sampler. The INMOS transputer is used as an accelerator, as the calculation of a waveform using software is a computational intensive process. It is concluded that sound synthesis can be performed successfully using a PC and the appropriate software, and utilizing the facilities provided by a MIDI environment including a digital sampler.
- Full Text:
- Authors: Kesterton, Anthony James
- Date: 1991
- Subjects: Computer sound processing -- Research , Music -- Data processing -- Research , MIDI (Standard)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4678 , http://hdl.handle.net/10962/d1006701 , Computer sound processing -- Research , Music -- Data processing -- Research , MIDI (Standard)
- Description: The wide range of options for experimentation with the synthesis of sound are usually expensive, difficult to obtain, or limit the experimenter. The work described in this thesis shows how the IBM PC and software can be combined to provide a suitable platform for experimentation with different synthesis techniques. This platform is based on the PC, the Musical Instrument Digital Interface (MIDI) and a musical instrument called a digital sampler. The fundamental concepts of sound are described, with reference to digital sound reproduction. A number of synthesis techniques are described. These are evaluated according to the criteria of generality, efficiency and control. The techniques discussed are additive synthesis, frequency modulation synthesis, subtractive synthesis, granular synthesis, resynthesis, wavetable synthesis, and sampling. Spiral synthesis, physical modelling, waveshaping and spectral interpolation are discussed briefly. The Musical Instrument Digital Interface is a standard method of connecting digital musical instruments together. It is the MIDI standard and equipment conforming to that standard that makes this implementation of synthesis techniques possible. As a demonstration of the PC platform, additive synthesis, frequency modulation synthesis, granular synthesis and spiral synthesis have been implemented in software. A PC equipped with a MIDI interface card is used to perform the synthesis. The MIDI protocol is used to transmit the resultant sound to a digital sampler. The INMOS transputer is used as an accelerator, as the calculation of a waveform using software is a computational intensive process. It is concluded that sound synthesis can be performed successfully using a PC and the appropriate software, and utilizing the facilities provided by a MIDI environment including a digital sampler.
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The textbook as a major source of difficulty in the teaching and learning of geography through the medium of English in Standard 3 in black primary schools
- Authors: Langhan, David Patrick
- Date: 1991
- Subjects: Children, Black -- Education -- South Africa , Geography -- Textbooks , Geography -- Study and teaching (Primary) -- South Africa , Language and education -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2335 , http://hdl.handle.net/10962/d1002017 , Children, Black -- Education -- South Africa , Geography -- Textbooks , Geography -- Study and teaching (Primary) -- South Africa , Language and education -- South Africa
- Description: This dissertation provides evidence to suggest that teaching/learning difficulties with geography in Std 3 are largely attributable to textbooks which fail as well constructed discourse and include uninterpretable illustrations. The discourse properties most likely to affect the readability of textbooks intended for ESL/EFL pupils are identified. Selected passages from two widely used Std 3 geography textbooks are analysed in terms of these properties, and are shown to fail extensively as well constructed discourse. Following classroom observation and informal interviews which confirmed the inappropriacy of the texts for Std 3 pupils, the passages were re-written, following the necessary properties of well constructed expository discourse. The readability of these two sets of texts was then tested on a group of nine Std 3 teachers in two structured interviews. The findings reveal that the re-written passages are significantly more readable than the textbook passages. Recommendations that affect education authorities, curriculum designers, syllabus makers, textbook authors, publishers and teacher training colleges are provided
- Full Text:
- Authors: Langhan, David Patrick
- Date: 1991
- Subjects: Children, Black -- Education -- South Africa , Geography -- Textbooks , Geography -- Study and teaching (Primary) -- South Africa , Language and education -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2335 , http://hdl.handle.net/10962/d1002017 , Children, Black -- Education -- South Africa , Geography -- Textbooks , Geography -- Study and teaching (Primary) -- South Africa , Language and education -- South Africa
- Description: This dissertation provides evidence to suggest that teaching/learning difficulties with geography in Std 3 are largely attributable to textbooks which fail as well constructed discourse and include uninterpretable illustrations. The discourse properties most likely to affect the readability of textbooks intended for ESL/EFL pupils are identified. Selected passages from two widely used Std 3 geography textbooks are analysed in terms of these properties, and are shown to fail extensively as well constructed discourse. Following classroom observation and informal interviews which confirmed the inappropriacy of the texts for Std 3 pupils, the passages were re-written, following the necessary properties of well constructed expository discourse. The readability of these two sets of texts was then tested on a group of nine Std 3 teachers in two structured interviews. The findings reveal that the re-written passages are significantly more readable than the textbook passages. Recommendations that affect education authorities, curriculum designers, syllabus makers, textbook authors, publishers and teacher training colleges are provided
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The transitional role of the Xhosa oral poet in contemporary South African society
- Authors: Kaschula, Russell H
- Date: 1991
- Subjects: Folk poetry, Xhosa Xhosa (African people) -- Religion Xhosa (African people) -- Social life and customs Xhosa poetry Laudatory poetry
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3563 , http://hdl.handle.net/10962/d1002085 , https://orcid.org/0000-0002-5481-6748
- Description: This thesis outlines the changing role of the Xhosa imbongi in contemporary South African society. The changing socio-economic and political scenario in South Africa, and the way in which the imbongi is adapting in order to accommodate new pressures created by these changes, form an integral part of this thesis. The effects of education and increasing literacy on the tradition are outlined. The interaction between oral and written forms is explored in chapter 2. The role of the imbongi within the religious sphere is included in chapter 3. Xhosa preachers within the independent churches often make use of the styles and techniques associated with oral poetry. Iimbongi who are not necessarily preachers also operate within this context. The relationship between the Congress of South African Trade Unions, the African National Congress and iimbongi has also been researched and forms part of chapters 4, 5, and the epilogue. The modern imbongi is drawn towards powerful organisations offering alternative leadership to many of the traditional chiefs. In the epilogue collected poetry is analysed in the context of Mandela's visit to Transkei in April 1990. Interviews have been conducted with chiefs, iimbongi attached to chiefs as well as those attached to different organisations. Poetry has been collected and analysed. In chapter 5, three case studies of modern iimbongi are included. The problems facing these iimbongi in their different contexts, as well as the power bases from which they draw, are outlined. Finally, an alternative definition of the imbongi is offered in the conclusion
- Full Text:
- Authors: Kaschula, Russell H
- Date: 1991
- Subjects: Folk poetry, Xhosa Xhosa (African people) -- Religion Xhosa (African people) -- Social life and customs Xhosa poetry Laudatory poetry
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3563 , http://hdl.handle.net/10962/d1002085 , https://orcid.org/0000-0002-5481-6748
- Description: This thesis outlines the changing role of the Xhosa imbongi in contemporary South African society. The changing socio-economic and political scenario in South Africa, and the way in which the imbongi is adapting in order to accommodate new pressures created by these changes, form an integral part of this thesis. The effects of education and increasing literacy on the tradition are outlined. The interaction between oral and written forms is explored in chapter 2. The role of the imbongi within the religious sphere is included in chapter 3. Xhosa preachers within the independent churches often make use of the styles and techniques associated with oral poetry. Iimbongi who are not necessarily preachers also operate within this context. The relationship between the Congress of South African Trade Unions, the African National Congress and iimbongi has also been researched and forms part of chapters 4, 5, and the epilogue. The modern imbongi is drawn towards powerful organisations offering alternative leadership to many of the traditional chiefs. In the epilogue collected poetry is analysed in the context of Mandela's visit to Transkei in April 1990. Interviews have been conducted with chiefs, iimbongi attached to chiefs as well as those attached to different organisations. Poetry has been collected and analysed. In chapter 5, three case studies of modern iimbongi are included. The problems facing these iimbongi in their different contexts, as well as the power bases from which they draw, are outlined. Finally, an alternative definition of the imbongi is offered in the conclusion
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Topical corticosteroid-induced skin blanching measurement, eye or instrument?
- Haigh, John M, Smith, Eric W
- Authors: Haigh, John M , Smith, Eric W
- Date: 1991
- Language: English
- Type: Article
- Identifier: vital:6378 , http://hdl.handle.net/10962/d1006296
- Description: We have read with interest a recent critique of the human skin blanching assay. We are concerned about the accuracy of statements and the interpretation of results presented in this publication. Having successfully employed this bioassay for over 15 years, and having noted similar, productive usage of this optimized technique reported from laboratories worldwide, the negativism expressed in the critique could dissuade potential researchers from employing this extremely useful assay procedure.
- Full Text:
- Authors: Haigh, John M , Smith, Eric W
- Date: 1991
- Language: English
- Type: Article
- Identifier: vital:6378 , http://hdl.handle.net/10962/d1006296
- Description: We have read with interest a recent critique of the human skin blanching assay. We are concerned about the accuracy of statements and the interpretation of results presented in this publication. Having successfully employed this bioassay for over 15 years, and having noted similar, productive usage of this optimized technique reported from laboratories worldwide, the negativism expressed in the critique could dissuade potential researchers from employing this extremely useful assay procedure.
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Up Beat Issue Number 1 1991
- SACHED
- Authors: SACHED
- Date: 1991
- Subjects: SACHED
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/116100 , vital:34297
- Description: Every day we see adverts in newspapers and magazines encouraging people to smoke cigarettes. But what these adverts don’t tell us, is that smoking cigarettes is very dangerous. Today there are 75% more smokers worldwide than there were 20 years ago. Doctors in America are very worried about the damage smoking can do to one’s health. They say that smoking is responsible for almost 2.5 million deaths every year. More and more children are starting to smoke cigarettes. Doctors say that millions of children under the age of 20 could die of smoking.
- Full Text:
- Authors: SACHED
- Date: 1991
- Subjects: SACHED
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/116100 , vital:34297
- Description: Every day we see adverts in newspapers and magazines encouraging people to smoke cigarettes. But what these adverts don’t tell us, is that smoking cigarettes is very dangerous. Today there are 75% more smokers worldwide than there were 20 years ago. Doctors in America are very worried about the damage smoking can do to one’s health. They say that smoking is responsible for almost 2.5 million deaths every year. More and more children are starting to smoke cigarettes. Doctors say that millions of children under the age of 20 could die of smoking.
- Full Text:
Up Beat Issue Number 3 1991
- SACHED
- Authors: SACHED
- Date: 1991
- Subjects: SACHED
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/118871 , vital:34678
- Description: The 21 March is Sharpe- ville Day. On this day we remember what happened in 1960, when hundreds of people in townships all over South Africa marched on to police stations and burned their passes. In the morning of the 21 March 1960, thousands of people gathered outside the police station in the eastern Transvaal township of Sharpeville. They had been told that the police might announce changes in the pass law. At 1.15pm scuffle broke out outside the wire — fence of the police station. The police feared that the fence would collapse under the weight of the crowd. So they started to fire on the people. The people right in front immediately turned to flee, but could not get through the crush of people behind them. Sixty-nine people were killed and a further 180 wounded. Most of those killed were later found to have been shot in the back.
- Full Text:
- Authors: SACHED
- Date: 1991
- Subjects: SACHED
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/118871 , vital:34678
- Description: The 21 March is Sharpe- ville Day. On this day we remember what happened in 1960, when hundreds of people in townships all over South Africa marched on to police stations and burned their passes. In the morning of the 21 March 1960, thousands of people gathered outside the police station in the eastern Transvaal township of Sharpeville. They had been told that the police might announce changes in the pass law. At 1.15pm scuffle broke out outside the wire — fence of the police station. The police feared that the fence would collapse under the weight of the crowd. So they started to fire on the people. The people right in front immediately turned to flee, but could not get through the crush of people behind them. Sixty-nine people were killed and a further 180 wounded. Most of those killed were later found to have been shot in the back.
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Up Beat Issue Number 4 1991
- SACHED
- Authors: SACHED
- Date: 1991
- Subjects: SACHED
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/116211 , vital:34334
- Description: On the night of the 8 March 1991, a thousand women braved the rain to march through the streets of Johannesburg. They chose this day for their protest march because the 8 March is International Women’s Day. The women marched to highlight the problem of violence against women. They said that women are not safe on the streets at night. Many women are not even safe in their own homes! The night they marched about 140 women were raped in South Africa between six and nine o’ clock. Many women were beaten and raped in their own homes, some were hurt by their own husbands or boyfriends. ‘We want to feel safe in our own homes, at work and in the streets. We demand an end to violence against women,’ Monique Marks of the ANC Women’s League said. Copies of the demands were sent to the Chief Magistrate of Johannesburg, the City Council and Health Department.
- Full Text:
- Authors: SACHED
- Date: 1991
- Subjects: SACHED
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/116211 , vital:34334
- Description: On the night of the 8 March 1991, a thousand women braved the rain to march through the streets of Johannesburg. They chose this day for their protest march because the 8 March is International Women’s Day. The women marched to highlight the problem of violence against women. They said that women are not safe on the streets at night. Many women are not even safe in their own homes! The night they marched about 140 women were raped in South Africa between six and nine o’ clock. Many women were beaten and raped in their own homes, some were hurt by their own husbands or boyfriends. ‘We want to feel safe in our own homes, at work and in the streets. We demand an end to violence against women,’ Monique Marks of the ANC Women’s League said. Copies of the demands were sent to the Chief Magistrate of Johannesburg, the City Council and Health Department.
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Up Beat Issue Number 5 1991
- SACHED
- Authors: SACHED
- Date: 1991
- Subjects: SACHED
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/118972 , vital:34689
- Description: Two years ago in Lebowa there were no school textbooks. But between March 1986 and September 1989 the Lebowa Education Department paid out R98 million to booksellers for books and stationary. So where were the books? A recent enquiry into the Lebowa Education Department found out that people who worked for the Lebowa Education Department also owned bookshops. These shops received the biggest orders to supply schools with books. But the books never got to the schools. When the enquiry did a spot check, they found 300 000 new books lying unused in storerooms and schools!
- Full Text:
- Authors: SACHED
- Date: 1991
- Subjects: SACHED
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/118972 , vital:34689
- Description: Two years ago in Lebowa there were no school textbooks. But between March 1986 and September 1989 the Lebowa Education Department paid out R98 million to booksellers for books and stationary. So where were the books? A recent enquiry into the Lebowa Education Department found out that people who worked for the Lebowa Education Department also owned bookshops. These shops received the biggest orders to supply schools with books. But the books never got to the schools. When the enquiry did a spot check, they found 300 000 new books lying unused in storerooms and schools!
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Up Beat Issue Number 6 1991
- SACHED
- Authors: SACHED
- Date: 1991
- Subjects: SACHED
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/116259 , vital:34347
- Description: The people of Paballelo in Upingtonhadabig party. They started celebrating on Thursday 30 May and they carried on right through the week-end. They were happy because their friends were home, home from death row in jail. Perhaps some readers will remember reading a story in Upbeat last year about Evelina de Bruin. She was one of the people from Upington on death row. She was also one of the people set free on the 30 May. The first thing that Evelina did when she stepped out of prison was to hug her children that she had missed so much. ‘I feel the same now, seeing my children as I did when I saw them for the first time as newborns,’ said Evelina. Next Evelina gave her husband, Gideon Madlongwane a big hug. Gideon had also just been freed from death row. Evelina still says she was innocent. ‘I heard about the death of the policeman while I was doing my washing,’ said Evelina. ‘I was shocked when I was arrested. But I was not afraid. I knew Gideon and I had done nothing. I never dreamt that we would spend three and a half years in jail.’ Evelina’s lawyers are happy and angry. They feel that she shouldn’t have gone to jail in the first place. But they are happy that their appeal against the death sentences of the 14 people from Upington has been overturned.
- Full Text:
- Authors: SACHED
- Date: 1991
- Subjects: SACHED
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/116259 , vital:34347
- Description: The people of Paballelo in Upingtonhadabig party. They started celebrating on Thursday 30 May and they carried on right through the week-end. They were happy because their friends were home, home from death row in jail. Perhaps some readers will remember reading a story in Upbeat last year about Evelina de Bruin. She was one of the people from Upington on death row. She was also one of the people set free on the 30 May. The first thing that Evelina did when she stepped out of prison was to hug her children that she had missed so much. ‘I feel the same now, seeing my children as I did when I saw them for the first time as newborns,’ said Evelina. Next Evelina gave her husband, Gideon Madlongwane a big hug. Gideon had also just been freed from death row. Evelina still says she was innocent. ‘I heard about the death of the policeman while I was doing my washing,’ said Evelina. ‘I was shocked when I was arrested. But I was not afraid. I knew Gideon and I had done nothing. I never dreamt that we would spend three and a half years in jail.’ Evelina’s lawyers are happy and angry. They feel that she shouldn’t have gone to jail in the first place. But they are happy that their appeal against the death sentences of the 14 people from Upington has been overturned.
- Full Text:
Up Beat Issue Number 7 1991
- SACHED
- Authors: SACHED
- Date: 1991
- Subjects: SACHED
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/119009 , vital:34693
- Description: It’s that time of year again - exam time! But there’s no need to panic. We’ve got lots of stories to help you get through the exams. Turn to page 22 for some study tips. For those of you doing Geography, don’t miss the first part of our new series on mapwork. For history students, there’s a story on the vote. Need to find books to help you with your studies? We’ve got information on how to find books in the library. But there are also stories to enjoy. Read about Prophets of the City, a great new rap group with a message. And don’t forget to enter out exciting music competition or our drawing competition on page 25. You could be one of the lucky Upbeat winners! In the meantime, to all of you writing exams, we’re holding thumbs. Good luck!
- Full Text:
- Authors: SACHED
- Date: 1991
- Subjects: SACHED
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/119009 , vital:34693
- Description: It’s that time of year again - exam time! But there’s no need to panic. We’ve got lots of stories to help you get through the exams. Turn to page 22 for some study tips. For those of you doing Geography, don’t miss the first part of our new series on mapwork. For history students, there’s a story on the vote. Need to find books to help you with your studies? We’ve got information on how to find books in the library. But there are also stories to enjoy. Read about Prophets of the City, a great new rap group with a message. And don’t forget to enter out exciting music competition or our drawing competition on page 25. You could be one of the lucky Upbeat winners! In the meantime, to all of you writing exams, we’re holding thumbs. Good luck!
- Full Text:
Up Beat Issue Number 8 1991
- SACHED
- Authors: SACHED
- Date: 1991
- Subjects: SACHED
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/116633 , vital:34419
- Description: On 7 August, more than 6 000 teachers from all over the Transvaal gathered in Johannesburg. The teachers wanted the government to know how difficult teaching is when there are no proper facilities. The teachers met at the City Hall to talk about their problems. Then, at one o’clock, everyone left the hall and marched to the Department of Education and Training offices in Braamfontein. Down Rissik Street the teachers marched, right past the Upbeat offices. All you could see were teachers, teachers and more teachers. When they reached the DET offices, they gave the DET a list of their demands. This is what your teachers want. The DET must recognise the teachers’ union, SADTU. The DET must stop making the lives of teachers who belong to the union difficult. All teachers must earn a living wage. There must be smaller classes and more teachers. All schools must be open to all people. Women teachers and girl students must be treated the same as males. All education laws to do with apartheid must go. The DET must confirm the jobs of all teachers on probation.
- Full Text:
- Authors: SACHED
- Date: 1991
- Subjects: SACHED
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/116633 , vital:34419
- Description: On 7 August, more than 6 000 teachers from all over the Transvaal gathered in Johannesburg. The teachers wanted the government to know how difficult teaching is when there are no proper facilities. The teachers met at the City Hall to talk about their problems. Then, at one o’clock, everyone left the hall and marched to the Department of Education and Training offices in Braamfontein. Down Rissik Street the teachers marched, right past the Upbeat offices. All you could see were teachers, teachers and more teachers. When they reached the DET offices, they gave the DET a list of their demands. This is what your teachers want. The DET must recognise the teachers’ union, SADTU. The DET must stop making the lives of teachers who belong to the union difficult. All teachers must earn a living wage. There must be smaller classes and more teachers. All schools must be open to all people. Women teachers and girl students must be treated the same as males. All education laws to do with apartheid must go. The DET must confirm the jobs of all teachers on probation.
- Full Text:
Women workers
- CWIU
- Authors: CWIU
- Date: 1991
- Subjects: CWIU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/178894 , vital:43009
- Description: In South Africa the majority of women workers are oppressed and exploited as workers,blacks and as women. Our resolution says that one of the key ways women can take up their rightful place as active members and leaders of our society is through active policies of affirmative action at the workplace and within our own organisations. The resolution calls on employers to work towards ending discrimination at the workplace as quickly as possible and for an end to discrimination within our own organisations.
- Full Text:
- Authors: CWIU
- Date: 1991
- Subjects: CWIU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/178894 , vital:43009
- Description: In South Africa the majority of women workers are oppressed and exploited as workers,blacks and as women. Our resolution says that one of the key ways women can take up their rightful place as active members and leaders of our society is through active policies of affirmative action at the workplace and within our own organisations. The resolution calls on employers to work towards ending discrimination at the workplace as quickly as possible and for an end to discrimination within our own organisations.
- Full Text: