Dilution of topical corticosteroid formulations
- Authors: Haigh, John M
- Date: 1988
- Language: English
- Type: text , Article
- Identifier: vital:6377 , http://hdl.handle.net/10962/d1006295
- Description: It has been a long-held concern of a number of people working in this field that some dermatologists prescribing a 1:10 dilution of a corticosteroid preparation such as Dermovate cream believe that the final product will be one tenth as efficacious and also produce one tenth of the side effects as the undiluted formulation. This is certainly not the case. Dermovate falls into the very potent category of topical corticosteroid preparations (as defined in the United Kingdom Monthly Index of Medical Specialities) and a 1:10 dilution falls into the potent category.
- Full Text:
- Date Issued: 1988
- Authors: Haigh, John M
- Date: 1988
- Language: English
- Type: text , Article
- Identifier: vital:6377 , http://hdl.handle.net/10962/d1006295
- Description: It has been a long-held concern of a number of people working in this field that some dermatologists prescribing a 1:10 dilution of a corticosteroid preparation such as Dermovate cream believe that the final product will be one tenth as efficacious and also produce one tenth of the side effects as the undiluted formulation. This is certainly not the case. Dermovate falls into the very potent category of topical corticosteroid preparations (as defined in the United Kingdom Monthly Index of Medical Specialities) and a 1:10 dilution falls into the potent category.
- Full Text:
- Date Issued: 1988
Discussing the evidence : small group work in the history class
- Robinson, Andrew Meredith Lewin
- Authors: Robinson, Andrew Meredith Lewin
- Date: 1988
- Subjects: History -- Study and teaching (Secondary) Group work in education
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1863 , http://hdl.handle.net/10962/d1004588
- Description: This is a small-scale research study on the discovery method of teaching history through the medium of small-group discussion. The study begins with a brief outline of the theoretical background to these topics, as well as of some of the extant research in the field. The class selected for the study is the standard seven class of a boys' high school. After the researcher has instructed the whole standard in an historical area which is unfamiliar to the pupils, twelve groups of three each are selected and withdrawn from the rest of the class, one group at a time. These thirty-six pupils become the "experimental" group; the rest of the pupils become the "control" group . The groups are selected according to different intellectual criteria and presented with stimulus material of one of three kinds, which is intended to aid them in their discourse. Each group is given the same set of three questions to discuss and, without further assistance by the researcher, the discussion takes place. This is recorded on audio-tape. After all the group discussions have been recorded, an assessment test is given to the whole standard, both experimental and control pupils. At the end of the school term a compulsory examination question is inserted in the history examination. The statistical data forthcoming from these assessments are correlated and the results analysed. Meanwhile, transcripts of all the group discussions have been made and these are analysed on a qualitative basis in terms of the groups' intellectual composition and according to the type of stimulus material used, and the results are recorded. The concept of "leaderless" groups is briefly discussed in the light of the dealings of the various groups in the study. The researcher finally feels justified in concluding that small groups are an ideal medium for the handling of evidence- based learning in history. He also has certain observations to make on the performance of groups of mixed (as opposed to homogeneous) ability as well as on the success of certain types of stimulus material towards initiating profitable discussion.
- Full Text:
- Date Issued: 1988
- Authors: Robinson, Andrew Meredith Lewin
- Date: 1988
- Subjects: History -- Study and teaching (Secondary) Group work in education
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1863 , http://hdl.handle.net/10962/d1004588
- Description: This is a small-scale research study on the discovery method of teaching history through the medium of small-group discussion. The study begins with a brief outline of the theoretical background to these topics, as well as of some of the extant research in the field. The class selected for the study is the standard seven class of a boys' high school. After the researcher has instructed the whole standard in an historical area which is unfamiliar to the pupils, twelve groups of three each are selected and withdrawn from the rest of the class, one group at a time. These thirty-six pupils become the "experimental" group; the rest of the pupils become the "control" group . The groups are selected according to different intellectual criteria and presented with stimulus material of one of three kinds, which is intended to aid them in their discourse. Each group is given the same set of three questions to discuss and, without further assistance by the researcher, the discussion takes place. This is recorded on audio-tape. After all the group discussions have been recorded, an assessment test is given to the whole standard, both experimental and control pupils. At the end of the school term a compulsory examination question is inserted in the history examination. The statistical data forthcoming from these assessments are correlated and the results analysed. Meanwhile, transcripts of all the group discussions have been made and these are analysed on a qualitative basis in terms of the groups' intellectual composition and according to the type of stimulus material used, and the results are recorded. The concept of "leaderless" groups is briefly discussed in the light of the dealings of the various groups in the study. The researcher finally feels justified in concluding that small groups are an ideal medium for the handling of evidence- based learning in history. He also has certain observations to make on the performance of groups of mixed (as opposed to homogeneous) ability as well as on the success of certain types of stimulus material towards initiating profitable discussion.
- Full Text:
- Date Issued: 1988
Distribution and petrogenesis of the basic rocks of the Etendeka Formation of northwestern Namibia
- Marsh, Julian S, Duncan, Andrew R, Milner, Simon C, Erlank, Anthony J
- Authors: Marsh, Julian S , Duncan, Andrew R , Milner, Simon C , Erlank, Anthony J
- Date: 1988
- Language: English
- Type: text , abstracts
- Identifier: http://hdl.handle.net/10962/131667 , vital:36709
- Description: The igneous rocks which comprise the Etendeka Formation in northwestern Namibia cover an area of 78 000 km² and consist dominantly of interbedded basalts and quartz latites, with minor latites. They are spatially associated with, and intruded by, two suites of dolerites. The rocks of the Etendeka Formation are included in the Karoo Igneous Province but differ from most other Karoo volcanics with respect to their younger age (Cretaceous) and aspects of their mineralogy and geochemistry.
- Full Text:
- Date Issued: 1988
- Authors: Marsh, Julian S , Duncan, Andrew R , Milner, Simon C , Erlank, Anthony J
- Date: 1988
- Language: English
- Type: text , abstracts
- Identifier: http://hdl.handle.net/10962/131667 , vital:36709
- Description: The igneous rocks which comprise the Etendeka Formation in northwestern Namibia cover an area of 78 000 km² and consist dominantly of interbedded basalts and quartz latites, with minor latites. They are spatially associated with, and intruded by, two suites of dolerites. The rocks of the Etendeka Formation are included in the Karoo Igneous Province but differ from most other Karoo volcanics with respect to their younger age (Cretaceous) and aspects of their mineralogy and geochemistry.
- Full Text:
- Date Issued: 1988
Domine non
- Our Lady of Africa Congregation, Composer not specified, Simasiku, John Nyambe, Dargie, Dave
- Authors: Our Lady of Africa Congregation , Composer not specified , Simasiku, John Nyambe , Dargie, Dave
- Date: 1988
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa Namibia Ngwezi f-sx
- Language: Lozi
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/307209 , vital:58776 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD114-31
- Description: Sung Mass at Our Lady of Africa with drums and rattle accompaniment.
- Full Text: false
- Date Issued: 1988
- Authors: Our Lady of Africa Congregation , Composer not specified , Simasiku, John Nyambe , Dargie, Dave
- Date: 1988
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa Namibia Ngwezi f-sx
- Language: Lozi
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/307209 , vital:58776 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD114-31
- Description: Sung Mass at Our Lady of Africa with drums and rattle accompaniment.
- Full Text: false
- Date Issued: 1988
Drum Rhythms
- Group of local drummers, Composer Not Specified, Dargie, Dave
- Authors: Group of local drummers , Composer Not Specified , Dargie, Dave
- Date: 1988
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa Namibia Andara f-sx
- Language: Mbukushu
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/306478 , vital:58693 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD113-06
- Description: Local drummers demonstrate different drum rhythms.
- Full Text: false
- Date Issued: 1988
- Authors: Group of local drummers , Composer Not Specified , Dargie, Dave
- Date: 1988
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa Namibia Andara f-sx
- Language: Mbukushu
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/306478 , vital:58693 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD113-06
- Description: Local drummers demonstrate different drum rhythms.
- Full Text: false
- Date Issued: 1988
Duvha U a da
- Munyayi, Philemon, Group of Church Singers, Composer Not Specified, Dargie, Dave
- Authors: Munyayi, Philemon , Group of Church Singers , Composer Not Specified , Dargie, Dave
- Date: 1988
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Thohoyandou f-sa
- Language: Tshivenḓa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/312260 , vital:59360 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD127-17
- Description: Religious song with Tshihwana mouth bow and drums accompaniment.
- Full Text: false
- Date Issued: 1988
- Authors: Munyayi, Philemon , Group of Church Singers , Composer Not Specified , Dargie, Dave
- Date: 1988
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Thohoyandou f-sa
- Language: Tshivenḓa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/312260 , vital:59360 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD127-17
- Description: Religious song with Tshihwana mouth bow and drums accompaniment.
- Full Text: false
- Date Issued: 1988
Dzhasi la vhakoma
- Venda Group, Composer Not Specified, Dargie, Dave
- Authors: Venda Group , Composer Not Specified , Dargie, Dave
- Date: 1988
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Tsianda f-sa
- Language: Tshivenḓa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/312519 , vital:59388 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD128-11
- Description: Tradition music.
- Full Text: false
- Date Issued: 1988
- Authors: Venda Group , Composer Not Specified , Dargie, Dave
- Date: 1988
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Tsianda f-sa
- Language: Tshivenḓa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/312519 , vital:59388 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD128-11
- Description: Tradition music.
- Full Text: false
- Date Issued: 1988
Dzunisani Hosi, Halleluia
- Chuma, Peter, Composer Not Specified, Dargie, Dave
- Authors: Chuma, Peter , Composer Not Specified , Dargie, Dave
- Date: 1988
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa City not specified f-sa
- Language: Xitsonga
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/311239 , vital:59240 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD123-08
- Description: Practise and performance of traditional song.
- Full Text: false
- Date Issued: 1988
- Authors: Chuma, Peter , Composer Not Specified , Dargie, Dave
- Date: 1988
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa City not specified f-sa
- Language: Xitsonga
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/311239 , vital:59240 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD123-08
- Description: Practise and performance of traditional song.
- Full Text: false
- Date Issued: 1988
Effects of vitamin A on tumour and untransformed cells
- Authors: De Villiers, Diane Lynette
- Date: 1988
- Subjects: Vitamin A , Vitamin A in the body , Cancer -- Prevention
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3881 , http://hdl.handle.net/10962/d1001615
- Description: Vitamin A and its chemical analogues (retinoids) are known to play a role in the maintenance and differentiation of epithelial tissue. Retinoids have been shown to inhibit carcinogenesis in a number of tissues in experimental animals and to inhibit the growth of various untransformed and cancer cell lines in vitro. This study investigated the effect of retinyl acetate supplemented at concentrations of 1 μM, 5 μM, 10 μM and 100 μM to in vitro cultured untransformed LLCMK cells, and transformed BL-6 melanoma and human hepatoma cell lines. A small but non-significant effect of vitamin A addition on the growth of the untransformed cells was observed, while substantial inhibition of proliferation of the two tumour cell lines was found. At the cytotoxic level of 100 μM supplemented vitamin A, all three cell lines showed marked inhibition of growth. This led to an electron microscopy study to examine the ultrastructural effect of the vitamin A addition. At the low non-toxic levels of vitamin A addition (1 - 10 μM), no ultrastructural changes were observed in the untransformed cells. However, at a level of 5 μM and 10 μM vitamin A addition in the tumour cells, an increase in the size of suspected lipid droplets was observed. At the cytotoxic level of 100 μM supplemented vitamin A, large lipid droplets were very apparent, as was much cellular degeneration. This effect was more marked in the tumour cells than in the untransformed cells. The lipid nature of the droplets was confirmed by using the lipid stain, Sudan IV. In order to investigate the effect of added vitamin A at the cell surface level, an ELISA system was used to quantify the level of the cell surface glycoprotein, fibronectin, in the culture media. Vitamin A plays an important role in the production of mature fibronectin by participating in the glycosylation of the molecule. This study showed no major effect of added vitamin A on the release of fibronectin into the culture media. This did not, however, exclude the possibility that the vitamin A was involved in the production and enhanced binding of fibronectin to the cell surface, and was possibly also exerting an effect on the availability of fibronectin receptors. Further studies would, however, be required to substantiate such effects of vitamin A supplementation. No single mechanism of action of vitamin A on tumour cell growth inhibition was identified, but the possibility that at least two mechanisms exist, was suggested
- Full Text:
- Date Issued: 1988
- Authors: De Villiers, Diane Lynette
- Date: 1988
- Subjects: Vitamin A , Vitamin A in the body , Cancer -- Prevention
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3881 , http://hdl.handle.net/10962/d1001615
- Description: Vitamin A and its chemical analogues (retinoids) are known to play a role in the maintenance and differentiation of epithelial tissue. Retinoids have been shown to inhibit carcinogenesis in a number of tissues in experimental animals and to inhibit the growth of various untransformed and cancer cell lines in vitro. This study investigated the effect of retinyl acetate supplemented at concentrations of 1 μM, 5 μM, 10 μM and 100 μM to in vitro cultured untransformed LLCMK cells, and transformed BL-6 melanoma and human hepatoma cell lines. A small but non-significant effect of vitamin A addition on the growth of the untransformed cells was observed, while substantial inhibition of proliferation of the two tumour cell lines was found. At the cytotoxic level of 100 μM supplemented vitamin A, all three cell lines showed marked inhibition of growth. This led to an electron microscopy study to examine the ultrastructural effect of the vitamin A addition. At the low non-toxic levels of vitamin A addition (1 - 10 μM), no ultrastructural changes were observed in the untransformed cells. However, at a level of 5 μM and 10 μM vitamin A addition in the tumour cells, an increase in the size of suspected lipid droplets was observed. At the cytotoxic level of 100 μM supplemented vitamin A, large lipid droplets were very apparent, as was much cellular degeneration. This effect was more marked in the tumour cells than in the untransformed cells. The lipid nature of the droplets was confirmed by using the lipid stain, Sudan IV. In order to investigate the effect of added vitamin A at the cell surface level, an ELISA system was used to quantify the level of the cell surface glycoprotein, fibronectin, in the culture media. Vitamin A plays an important role in the production of mature fibronectin by participating in the glycosylation of the molecule. This study showed no major effect of added vitamin A on the release of fibronectin into the culture media. This did not, however, exclude the possibility that the vitamin A was involved in the production and enhanced binding of fibronectin to the cell surface, and was possibly also exerting an effect on the availability of fibronectin receptors. Further studies would, however, be required to substantiate such effects of vitamin A supplementation. No single mechanism of action of vitamin A on tumour cell growth inhibition was identified, but the possibility that at least two mechanisms exist, was suggested
- Full Text:
- Date Issued: 1988
Eh hompa wetu, hompa Jesu
- Nangura, Cecilia, Rubepo, Serafuna, Group of children, Gregensia, Sister, Nambara, Ambrosius, Composer not specified, Dargie, Dave
- Authors: Nangura, Cecilia , Rubepo, Serafuna , Group of children , Gregensia, Sister , Nambara, Ambrosius , Composer not specified , Dargie, Dave
- Date: 1988
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa Namibia Sambiu f-sx
- Language: Rukwángali
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/308022 , vital:58870 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD116-35
- Description: Religious school hymn, accompanied by drums.
- Full Text: false
- Date Issued: 1988
- Authors: Nangura, Cecilia , Rubepo, Serafuna , Group of children , Gregensia, Sister , Nambara, Ambrosius , Composer not specified , Dargie, Dave
- Date: 1988
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa Namibia Sambiu f-sx
- Language: Rukwángali
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/308022 , vital:58870 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD116-35
- Description: Religious school hymn, accompanied by drums.
- Full Text: false
- Date Issued: 1988
Ek hoor jou my kind
- Kavango man and women, Tracey, Andrew T N
- Authors: Kavango man and women , Tracey, Andrew T N
- Date: 1988
- Subjects: Diriku (African people) -- Namibia , Folk music -- Namibia , Mbira and percussion music , Sub-Saharan African music , Africa Namibia Okavango f-sx
- Language: Diu
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/74254 , vital:30279 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC013b-02
- Description: Traditional song with mbira accompaniment.
- Full Text: false
- Date Issued: 1988
- Authors: Kavango man and women , Tracey, Andrew T N
- Date: 1988
- Subjects: Diriku (African people) -- Namibia , Folk music -- Namibia , Mbira and percussion music , Sub-Saharan African music , Africa Namibia Okavango f-sx
- Language: Diu
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/74254 , vital:30279 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC013b-02
- Description: Traditional song with mbira accompaniment.
- Full Text: false
- Date Issued: 1988
Elinye ilanga uJesu sizombona
- St Paul's Choir, Composer Not Specified, Dargie, Dave
- Authors: St Paul's Choir , Composer Not Specified , Dargie, Dave
- Date: 1988
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa f-sa
- Language: Zulu
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/310289 , vital:59135 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD119-34
- Description: Music Festival Performance.
- Full Text: false
- Date Issued: 1988
- Authors: St Paul's Choir , Composer Not Specified , Dargie, Dave
- Date: 1988
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa f-sa
- Language: Zulu
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/310289 , vital:59135 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD119-34
- Description: Music Festival Performance.
- Full Text: false
- Date Issued: 1988
Elinye ilanga uJesu sizombona
- St Paul's Choir, Composer not specified, Dargie, Dave
- Authors: St Paul's Choir , Composer not specified , Dargie, Dave
- Date: 1988
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa, Pretoria sa
- Language: isiZulu
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/440126 , vital:73745 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC182a-14
- Description: Church music festival, liturgical dance and composition of new song with guitar accompaniment
- Full Text: false
- Date Issued: 1988
- Authors: St Paul's Choir , Composer not specified , Dargie, Dave
- Date: 1988
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa, Pretoria sa
- Language: isiZulu
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/440126 , vital:73745 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC182a-14
- Description: Church music festival, liturgical dance and composition of new song with guitar accompaniment
- Full Text: false
- Date Issued: 1988
English in Africa 2000 : towards a new millennium : inaugural lecture delivered at Rhodes University
- Authors: Walters, Paul S
- Date: 1988
- Subjects: Molteno Project , English language -- Study and teaching -- South Africa , English language -- Usage -- South Africa
- Language: English
- Type: Text
- Identifier: vital:678 , http://hdl.handle.net/10962/d1020747 , ISBN 0868101680
- Description: Inaugural lecture delivered at Rhodes University , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 1988
English in Africa 2000 : towards a new millennium : inaugural lecture delivered at Rhodes University
- Authors: Walters, Paul S
- Date: 1988
- Subjects: Molteno Project , English language -- Study and teaching -- South Africa , English language -- Usage -- South Africa
- Language: English
- Type: Text
- Identifier: vital:678 , http://hdl.handle.net/10962/d1020747 , ISBN 0868101680
- Description: Inaugural lecture delivered at Rhodes University , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 1988
Eni sha, lu Tabile
- Mixed Congregation Choir, Composer not specified, Dargie, Dave
- Authors: Mixed Congregation Choir , Composer not specified , Dargie, Dave
- Date: 1988
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa Namibia Katima Mulilo f-sx
- Language: Lozi
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/307436 , vital:58803 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD115-21
- Description: Composition workshop performance with Silimba xylophone, drums and rattles accompaniment.
- Full Text: false
- Date Issued: 1988
- Authors: Mixed Congregation Choir , Composer not specified , Dargie, Dave
- Date: 1988
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa Namibia Katima Mulilo f-sx
- Language: Lozi
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/307436 , vital:58803 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD115-21
- Description: Composition workshop performance with Silimba xylophone, drums and rattles accompaniment.
- Full Text: false
- Date Issued: 1988
Entrance song
- Our Lady of Africa Congregation, Composer not specified, Dargie, Dave
- Authors: Our Lady of Africa Congregation , Composer not specified , Dargie, Dave
- Date: 1988
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa Namibia Ngwezi f-sx
- Language: Lozi
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/307015 , vital:58754 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD114-10
- Description: Sung Mass at Our Lady of Africa.
- Full Text: false
- Date Issued: 1988
- Authors: Our Lady of Africa Congregation , Composer not specified , Dargie, Dave
- Date: 1988
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa Namibia Ngwezi f-sx
- Language: Lozi
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/307015 , vital:58754 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD114-10
- Description: Sung Mass at Our Lady of Africa.
- Full Text: false
- Date Issued: 1988
Entrance song
- Our Lady of Africa Congregation, Composer not specified, Dargie, Dave
- Authors: Our Lady of Africa Congregation , Composer not specified , Dargie, Dave
- Date: 1988
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa Namibia Ngwezi f-sx
- Language: Lozi
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/307020 , vital:58755 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD114-11
- Description: Sung Mass at Our Lady of Africa.
- Full Text: false
- Date Issued: 1988
- Authors: Our Lady of Africa Congregation , Composer not specified , Dargie, Dave
- Date: 1988
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa Namibia Ngwezi f-sx
- Language: Lozi
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/307020 , vital:58755 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD114-11
- Description: Sung Mass at Our Lady of Africa.
- Full Text: false
- Date Issued: 1988
Environmental requirements for the hatchery rearing of African catfish Clarias Gariepinus (Pisces: Clariidae) larvae and juveniles
- Britz, P J (Peter Jacobus), 1959-
- Authors: Britz, P J (Peter Jacobus), 1959-
- Date: 1988
- Subjects: Catfishes -- Africa , Fish culture , Clariidae , Clarias
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5188 , http://hdl.handle.net/10962/d1001964 , Catfishes -- Africa , Fish culture , Clariidae , Clarias
- Description: Inadequate seed production has historically been a factor limiting the commercial culture of Clarias gariepinus. The need to determine the environmental requirements of larvae was identified, in order to facilitate their successful mass rearing in hatcheries. The effects of key environmental factors on the growth, survival and aspects of the behaviour of C. gariepinus larvae and juveniles were investigated under controlled conditions. A strong emphasis was placed on the interpretation of the observed responses in terms of the natural history of the animal. Larvae were obtained by artificially inducing and spawning feral adult broodfish. Larval growth rates were highest in the temperature range 26-33ºC, with a peak at 30ºC. Survival of larvae was high between 22 and 33ºC. The final temperature preferendum of juveniles, determined in a thermal gradient was 30ºC, and it was concluded that this temperature is probably optimal for most of the physiological processes of the animal. Larvae and juveniles displayed strong negative phototaxis. When reared under different photoperiod regimes, larval growth increased with longer dark periods, however a similar rate of mortality was recorded in all photoperiod treatments. The provision of cover was found to enhance larval growth under conditions of continual light (24L/OD), however under conditions of continual darkness (OL/24D) similar growth rates were recorded regardless of the presence or absence of cover. All growth rates in continual darkness (OL/24D) were higher than those in continual light (24L/OD), regardless of whether cover was provided or not. It was concluded that a OL/24D photoperiod is optimal for larval rearing. At salinities between 0 and 5% similar growth and mortality rates of larvae were recorded. At 7.5 % larval growth and survival rates were lower, and at 10 % all larvae died within 48 hours. The 96h-LCSO for unionised ammonia was found to be 2.3 mg/l. The cytological effects of unionised ammonia were evident as degenerative changes in the gill and liver tissues. In an investigation of tank hygiene, it was found that larval growth and survival rates were highest in tanks not cleaned at all. As the frequency of tank cleaning increased, the growth and survival rates of larvae decreased. When reared at densities ranging from 45-450/1, larval growth was found to be density dependent. A model of hatchery productivity (number larvae of standard size produced/time/vol.) was developed based on the density dependent nature of larval growth. The model predicts that maximum productivity, will be achieved at a rearing density of 1400/1. The high growth and survival rates obtained over a broad range of each environmental parameter investigated serve to explain how larvae survive and grow in their unstable floodplain habitat in nature. The broad environmental tolerances of C. gariepinus are of benefit with respect to the culture of larvae, as successful larval rearing is possible over a fairly wide range of environmental conditions.
- Full Text:
- Date Issued: 1988
- Authors: Britz, P J (Peter Jacobus), 1959-
- Date: 1988
- Subjects: Catfishes -- Africa , Fish culture , Clariidae , Clarias
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5188 , http://hdl.handle.net/10962/d1001964 , Catfishes -- Africa , Fish culture , Clariidae , Clarias
- Description: Inadequate seed production has historically been a factor limiting the commercial culture of Clarias gariepinus. The need to determine the environmental requirements of larvae was identified, in order to facilitate their successful mass rearing in hatcheries. The effects of key environmental factors on the growth, survival and aspects of the behaviour of C. gariepinus larvae and juveniles were investigated under controlled conditions. A strong emphasis was placed on the interpretation of the observed responses in terms of the natural history of the animal. Larvae were obtained by artificially inducing and spawning feral adult broodfish. Larval growth rates were highest in the temperature range 26-33ºC, with a peak at 30ºC. Survival of larvae was high between 22 and 33ºC. The final temperature preferendum of juveniles, determined in a thermal gradient was 30ºC, and it was concluded that this temperature is probably optimal for most of the physiological processes of the animal. Larvae and juveniles displayed strong negative phototaxis. When reared under different photoperiod regimes, larval growth increased with longer dark periods, however a similar rate of mortality was recorded in all photoperiod treatments. The provision of cover was found to enhance larval growth under conditions of continual light (24L/OD), however under conditions of continual darkness (OL/24D) similar growth rates were recorded regardless of the presence or absence of cover. All growth rates in continual darkness (OL/24D) were higher than those in continual light (24L/OD), regardless of whether cover was provided or not. It was concluded that a OL/24D photoperiod is optimal for larval rearing. At salinities between 0 and 5% similar growth and mortality rates of larvae were recorded. At 7.5 % larval growth and survival rates were lower, and at 10 % all larvae died within 48 hours. The 96h-LCSO for unionised ammonia was found to be 2.3 mg/l. The cytological effects of unionised ammonia were evident as degenerative changes in the gill and liver tissues. In an investigation of tank hygiene, it was found that larval growth and survival rates were highest in tanks not cleaned at all. As the frequency of tank cleaning increased, the growth and survival rates of larvae decreased. When reared at densities ranging from 45-450/1, larval growth was found to be density dependent. A model of hatchery productivity (number larvae of standard size produced/time/vol.) was developed based on the density dependent nature of larval growth. The model predicts that maximum productivity, will be achieved at a rearing density of 1400/1. The high growth and survival rates obtained over a broad range of each environmental parameter investigated serve to explain how larvae survive and grow in their unstable floodplain habitat in nature. The broad environmental tolerances of C. gariepinus are of benefit with respect to the culture of larvae, as successful larval rearing is possible over a fairly wide range of environmental conditions.
- Full Text:
- Date Issued: 1988
Etla le tleng go utlwa
- St Joseph's Choir, Composer not specified, Dargie, Dave
- Authors: St Joseph's Choir , Composer not specified , Dargie, Dave
- Date: 1988
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa, Pretoria sa
- Language: Northern Sotho
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/440997 , vital:73839 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC183a-05
- Description: Church music festival, liturgical dance and composition of new song with clapping accompaniment
- Full Text: false
- Date Issued: 1988
- Authors: St Joseph's Choir , Composer not specified , Dargie, Dave
- Date: 1988
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa, Pretoria sa
- Language: Northern Sotho
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/440997 , vital:73839 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC183a-05
- Description: Church music festival, liturgical dance and composition of new song with clapping accompaniment
- Full Text: false
- Date Issued: 1988
Etlang Kamoka le utlwe
- Pedi Workshop Group, Composer Not Specified, Dargie, Dave
- Authors: Pedi Workshop Group , Composer Not Specified , Dargie, Dave
- Date: 1988
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa City not specified f-sa
- Language: Sesotho sa Leboa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/311662 , vital:59290 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD125-03
- Description: Practise and performance of church hymn.
- Full Text: false
- Date Issued: 1988
- Authors: Pedi Workshop Group , Composer Not Specified , Dargie, Dave
- Date: 1988
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa City not specified f-sa
- Language: Sesotho sa Leboa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/311662 , vital:59290 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD125-03
- Description: Practise and performance of church hymn.
- Full Text: false
- Date Issued: 1988