Volcanic rocks of the Witwatersrand triad, South Africa I: description, classification and geochemical stratigraphy
- Bowen, Teral B, Marsh, Julian S, Bowen, Michael P, Eales, Hugh V
- Authors: Bowen, Teral B , Marsh, Julian S , Bowen, Michael P , Eales, Hugh V
- Date: 2003
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/138682 , vital:37663 , https://doi.org/10.1016/0301-9268(86)90038-0
- Description: The Witwatersrand triad contains thick volcanic sequences confined largely to the Dominion Group at the base and the Ventersdorp Supergroup at the top. These volcanic sequences are of late-Archaean to early-Proterozoic age and are amongst the oldest supracrustal volcanic sequences erupted onto the Archaean Kaapvaal craton. The volcanic rocks have suffered low-grade greenschist facies metamorphism but primary textures and, in some samples, primary mineralogies are well preserved.
- Full Text: false
- Date Issued: 2003
- Authors: Bowen, Teral B , Marsh, Julian S , Bowen, Michael P , Eales, Hugh V
- Date: 2003
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/138682 , vital:37663 , https://doi.org/10.1016/0301-9268(86)90038-0
- Description: The Witwatersrand triad contains thick volcanic sequences confined largely to the Dominion Group at the base and the Ventersdorp Supergroup at the top. These volcanic sequences are of late-Archaean to early-Proterozoic age and are amongst the oldest supracrustal volcanic sequences erupted onto the Archaean Kaapvaal craton. The volcanic rocks have suffered low-grade greenschist facies metamorphism but primary textures and, in some samples, primary mineralogies are well preserved.
- Full Text: false
- Date Issued: 2003
Izwilethu
- Council of Unions of South Africa (CUSA)
- Authors: Council of Unions of South Africa (CUSA)
- Date: 1986-10
- Language: English
- Type: newspaper , text
- Identifier: http://hdl.handle.net/10962/60097 , vital:27733
- Description: Izwilethu newspaper, vol. 4, no. 8. Oct. 1986 Conference Issue.
- Full Text:
- Date Issued: 1986-10
- Authors: Council of Unions of South Africa (CUSA)
- Date: 1986-10
- Language: English
- Type: newspaper , text
- Identifier: http://hdl.handle.net/10962/60097 , vital:27733
- Description: Izwilethu newspaper, vol. 4, no. 8. Oct. 1986 Conference Issue.
- Full Text:
- Date Issued: 1986-10
Descriptions of two new species of Hetereleotris (Pisces: Gobiidae) from the western Indian Ocean, with discussion of related species
- Hoese, Douglass F, J.L.B. Smith Institute of Ichthyology
- Authors: Hoese, Douglass F , J.L.B. Smith Institute of Ichthyology
- Date: 1986-09
- Subjects: Gobiidae -- Classification
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/70228 , vital:29636 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
- Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 41 , Thirteen species of the genus Hetereleotris are recognized from the Indian Ocean. Two of the species are described as new. H. poecila (Fowler) is recorded for the first time from the Indian Ocean, and H. vulgaris (Klunzinger) is recorded from the Mediterranean. Specimens of H. zonata from India and Pakistan were found to differ in several features from specimens from South Africa. A key is given to the species from the western Indian Ocean. Diagnoses and a primary synonymy are given for each of the 11 previously described species.
- Full Text:
- Date Issued: 1986-09
- Authors: Hoese, Douglass F , J.L.B. Smith Institute of Ichthyology
- Date: 1986-09
- Subjects: Gobiidae -- Classification
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/70228 , vital:29636 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
- Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 41 , Thirteen species of the genus Hetereleotris are recognized from the Indian Ocean. Two of the species are described as new. H. poecila (Fowler) is recorded for the first time from the Indian Ocean, and H. vulgaris (Klunzinger) is recorded from the Mediterranean. Specimens of H. zonata from India and Pakistan were found to differ in several features from specimens from South Africa. A key is given to the species from the western Indian Ocean. Diagnoses and a primary synonymy are given for each of the 11 previously described species.
- Full Text:
- Date Issued: 1986-09
A new snake eel, Ophichthus bennettai, (Pisces: Ophichthidae) from off western South Africa
- McCosker, John E, J.L.B. Smith Institute of Ichthyology
- Authors: McCosker, John E , J.L.B. Smith Institute of Ichthyology
- Date: 1986-07
- Subjects: Snake eels -- South Africa
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/70206 , vital:29634 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
- Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 39 , A new species of snake-eel, Ophichthus bennettai, Subfamily Ophichthinae, is described from a single specimen trawled in 372 m off western South Africa. It differs from all other ophichthines in its combination of mostly uniserial teeth, uniform brown coloration, and vertebral formula 17-63-167.
- Full Text:
- Date Issued: 1986-07
- Authors: McCosker, John E , J.L.B. Smith Institute of Ichthyology
- Date: 1986-07
- Subjects: Snake eels -- South Africa
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/70206 , vital:29634 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
- Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 39 , A new species of snake-eel, Ophichthus bennettai, Subfamily Ophichthinae, is described from a single specimen trawled in 372 m off western South Africa. It differs from all other ophichthines in its combination of mostly uniserial teeth, uniform brown coloration, and vertebral formula 17-63-167.
- Full Text:
- Date Issued: 1986-07
LACOM News, no. 1, July 1986
- Authors: LACOM (Sached Trust)
- Date: 1986-07
- Language: English
- Type: Newsletter , text
- Identifier: http://hdl.handle.net/10962/60156 , vital:27742
- Description: At the national meeting of LACOM held in East London in May, a decision was taken that LACOM should produce its own newsletter. I he newsletter would be produced about tour times a year. The different branches would take responsibility for editing each edition of the newsletter. All branches would be responsible for submitting material to the editing branch by a required date. The aim of the newsletter was said to be: a) to provide a forum for open debate and of self-criticism and evaluation; b) to discuss some of the concrete problems facing the project; c) to raise more general and topical issues related to the practice of education; d) to include general information and news. This first newsletter was produced by the Durban branch of LACOM. Contributions were received from the Western Cape, Eastern Cape and Natal Region.
- Full Text:
- Date Issued: 1986-07
- Authors: LACOM (Sached Trust)
- Date: 1986-07
- Language: English
- Type: Newsletter , text
- Identifier: http://hdl.handle.net/10962/60156 , vital:27742
- Description: At the national meeting of LACOM held in East London in May, a decision was taken that LACOM should produce its own newsletter. I he newsletter would be produced about tour times a year. The different branches would take responsibility for editing each edition of the newsletter. All branches would be responsible for submitting material to the editing branch by a required date. The aim of the newsletter was said to be: a) to provide a forum for open debate and of self-criticism and evaluation; b) to discuss some of the concrete problems facing the project; c) to raise more general and topical issues related to the practice of education; d) to include general information and news. This first newsletter was produced by the Durban branch of LACOM. Contributions were received from the Western Cape, Eastern Cape and Natal Region.
- Full Text:
- Date Issued: 1986-07
Two new species of clinid fishes (Perciformes: Clinidae) from South Africa
- Heemstra, Phillip C, Wright, J E, J.L.B. Smith Institute of Ichthyology
- Authors: Heemstra, Phillip C , Wright, J E , J.L.B. Smith Institute of Ichthyology
- Date: 1986-07
- Subjects: Clinidae -- Classification , Perciformes -- South Africa
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/70224 , vital:29635 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
- Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 40 , Two new species of clinid fishes, Cancelloxus elongatus and Pavoclinus smalei, are described from specimens collected in 10 — 25 m off the southeastern Cape Province using rotenone and SCUBA. Generic assignment of both species is provisional pending a reassessment of the generic classification of South African clinid fishes.
- Full Text:
- Date Issued: 1986-07
- Authors: Heemstra, Phillip C , Wright, J E , J.L.B. Smith Institute of Ichthyology
- Date: 1986-07
- Subjects: Clinidae -- Classification , Perciformes -- South Africa
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/70224 , vital:29635 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
- Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 40 , Two new species of clinid fishes, Cancelloxus elongatus and Pavoclinus smalei, are described from specimens collected in 10 — 25 m off the southeastern Cape Province using rotenone and SCUBA. Generic assignment of both species is provisional pending a reassessment of the generic classification of South African clinid fishes.
- Full Text:
- Date Issued: 1986-07
"Charismatic" Amen
- Zionist Group, Composer not specified, Dargie, Dave
- Authors: Zionist Group , Composer not specified , Dargie, Dave
- Date: 1986
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Cape Town f-sa
- Language: isiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/297903 , vital:57643 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD096-14
- Description: Zionist Church Music with rattle accompaniment.
- Full Text: false
- Date Issued: 1986
- Authors: Zionist Group , Composer not specified , Dargie, Dave
- Date: 1986
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Cape Town f-sa
- Language: isiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/297903 , vital:57643 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD096-14
- Description: Zionist Church Music with rattle accompaniment.
- Full Text: false
- Date Issued: 1986
00:03:29
- Venancio Mbande and his Chopi Timbila xylophone orchestra players of Wildebeesfontein, Tracey, Andrew T N
- Authors: Venancio Mbande and his Chopi Timbila xylophone orchestra players of Wildebeesfontein , Tracey, Andrew T N
- Date: 1986
- Subjects: Chopi (African people) -- Music , Folk music -- South Africa , Xylophone (Musical instruments) , Drum (Musical instruments) , Rattle (Musical instruments) , Sub-Saharan African music , Africa South Africa Wildebeesfontein f-sa
- Language: Chopi
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/98752 , vital:31618 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC072a-04
- Description: Taditional dance song played by Venancio Mbande for Timbila solo analysis
- Full Text: false
- Date Issued: 1986
- Authors: Venancio Mbande and his Chopi Timbila xylophone orchestra players of Wildebeesfontein , Tracey, Andrew T N
- Date: 1986
- Subjects: Chopi (African people) -- Music , Folk music -- South Africa , Xylophone (Musical instruments) , Drum (Musical instruments) , Rattle (Musical instruments) , Sub-Saharan African music , Africa South Africa Wildebeesfontein f-sa
- Language: Chopi
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/98752 , vital:31618 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC072a-04
- Description: Taditional dance song played by Venancio Mbande for Timbila solo analysis
- Full Text: false
- Date Issued: 1986
1986 WAGE Negotiations
- The Liquor and Catering Trades Employees Union
- Authors: The Liquor and Catering Trades Employees Union
- Date: 1986
- Subjects: The Liquor and Catering Trades Employees Union
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/136306 , vital:37360
- Description: The Liquor and Catering Trades Employees' Union have made big demands for higher wages and shorter working hours to the bosses of the hotels. This is because wages are far too low for hotel workers while working hours are very long. These demands will be discussed at the Industrial Council, where your union representatives will argue for big improvements in working conditions. But we can expect strong opposition from the bosses who have their own representatives on the Industrial Council. So the union campaign for higher wages will not be easy! But we must win it because workers and their families are suffering and the union campaign is our only hope. The fight will not be won at the Industrial Council, however - it will be won in the hotels. We have to build up the union's strength in each and every hotel so that the bosses see that we are determined to win our demands. This booklet will help you to build up the workers' organisation in your hotel. Use it to discuss the union campaign so that every worker knows what part he or she has to play.
- Full Text:
- Date Issued: 1986
- Authors: The Liquor and Catering Trades Employees Union
- Date: 1986
- Subjects: The Liquor and Catering Trades Employees Union
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/136306 , vital:37360
- Description: The Liquor and Catering Trades Employees' Union have made big demands for higher wages and shorter working hours to the bosses of the hotels. This is because wages are far too low for hotel workers while working hours are very long. These demands will be discussed at the Industrial Council, where your union representatives will argue for big improvements in working conditions. But we can expect strong opposition from the bosses who have their own representatives on the Industrial Council. So the union campaign for higher wages will not be easy! But we must win it because workers and their families are suffering and the union campaign is our only hope. The fight will not be won at the Industrial Council, however - it will be won in the hotels. We have to build up the union's strength in each and every hotel so that the bosses see that we are determined to win our demands. This booklet will help you to build up the workers' organisation in your hotel. Use it to discuss the union campaign so that every worker knows what part he or she has to play.
- Full Text:
- Date Issued: 1986
A critical review of some of Roald Dahl's books for children, with particular reference to a 'subversive' element in his writing, some responses to his work and its place in the education of the child
- Authors: Van Renen, Charles Gerard
- Date: 1986
- Subjects: Dahl, Roald -- Criticism and interpretation
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1486 , http://hdl.handle.net/10962/d1003367
- Full Text:
- Date Issued: 1986
- Authors: Van Renen, Charles Gerard
- Date: 1986
- Subjects: Dahl, Roald -- Criticism and interpretation
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1486 , http://hdl.handle.net/10962/d1003367
- Full Text:
- Date Issued: 1986
A cultural magazine - eKapa
- Authors: Labour Research Service
- Date: 1986
- Subjects: LRS
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/250684 , vital:52038
- Description: These are bitter times in our lives. Crossroads have become a fountain of pain from which all are forced to drink. What do the vultures want with us? Our children cry day and night from hunger and the cold, and now, the ever falling rain. You see we have become a symbol. A symbol of defiance and of the courage of all our struggling people. This too is a part of our land, so why must we be moved? Some of the community have sold out for silver. They are now like cochcroaches in sour-milk. The police with all their guns, could not do their business here. I read of Ayanda Silika. He is dead now. The police took him away. They said that he shot a policeman from Pretoria. The police said that they had to do their business early in the morning. Why could they not come in the brightness of the sun, for all to see? Because, we had made this place for us. That is a reason why our houses are burnt and our lives are scattered. Ayanda Solika was 23 when they killed him. In 1976 he was 13 years old when Hector Petersen was killed. Like so many of these young comrades who battle without fear. I get strength from all this. The embers of Soweto 76 and the embers of Crossroads, are part of the same fire. And the Phoenix always rises from the ashes. Tomorrow we will still be here. And those who have gone will come back again. And we will live here like before. And the vultures can come, but those who run will be few. We the many will stand for we are gaining strength. Even now we are building again. Have they not heard our song of our people who fall, like leaves from a tree, but the tree still stands. That is a song of our lives.
- Full Text:
- Date Issued: 1986
- Authors: Labour Research Service
- Date: 1986
- Subjects: LRS
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/250684 , vital:52038
- Description: These are bitter times in our lives. Crossroads have become a fountain of pain from which all are forced to drink. What do the vultures want with us? Our children cry day and night from hunger and the cold, and now, the ever falling rain. You see we have become a symbol. A symbol of defiance and of the courage of all our struggling people. This too is a part of our land, so why must we be moved? Some of the community have sold out for silver. They are now like cochcroaches in sour-milk. The police with all their guns, could not do their business here. I read of Ayanda Silika. He is dead now. The police took him away. They said that he shot a policeman from Pretoria. The police said that they had to do their business early in the morning. Why could they not come in the brightness of the sun, for all to see? Because, we had made this place for us. That is a reason why our houses are burnt and our lives are scattered. Ayanda Solika was 23 when they killed him. In 1976 he was 13 years old when Hector Petersen was killed. Like so many of these young comrades who battle without fear. I get strength from all this. The embers of Soweto 76 and the embers of Crossroads, are part of the same fire. And the Phoenix always rises from the ashes. Tomorrow we will still be here. And those who have gone will come back again. And we will live here like before. And the vultures can come, but those who run will be few. We the many will stand for we are gaining strength. Even now we are building again. Have they not heard our song of our people who fall, like leaves from a tree, but the tree still stands. That is a song of our lives.
- Full Text:
- Date Issued: 1986
A demographic and socio-economic profile of Region D
- Black, Philip A, McCartan, Patrick John, Clayton, P M
- Authors: Black, Philip A , McCartan, Patrick John , Clayton, P M
- Date: 1986
- Subjects: Eastern Cape (South Africa) -- Population -- Statistics Eastern Cape (South Africa) -- Economic conditions -- Statistics Eastern Cape (South Africa) -- Social conditions -- Statistics
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/2053 , vital:20251 , ISBN 0868101486
- Description: Region D is one of the eight so-called development regions created in terms of a regional development strategy mapped out by the South African government in a White Paper of 1982. The region essentially consists of the Eastern Cape Province, the Border corridor, and the nominally 'independent' homelands of Ciskei and Transkei (southern part) stretching from Uniondale in the west, to Middelburg in the north and Umtata in the east. There is clearly a need to develop a data base for this region especially as it has been afforded priority status in terms of the new regional development policy. The purpose of this Working Paper is therefore to provide a statistical profile of Region D, distinguishing where possible between various sub-regions within Region D and between Region D and the rest of South Africa. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Date Issued: 1986
- Authors: Black, Philip A , McCartan, Patrick John , Clayton, P M
- Date: 1986
- Subjects: Eastern Cape (South Africa) -- Population -- Statistics Eastern Cape (South Africa) -- Economic conditions -- Statistics Eastern Cape (South Africa) -- Social conditions -- Statistics
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/2053 , vital:20251 , ISBN 0868101486
- Description: Region D is one of the eight so-called development regions created in terms of a regional development strategy mapped out by the South African government in a White Paper of 1982. The region essentially consists of the Eastern Cape Province, the Border corridor, and the nominally 'independent' homelands of Ciskei and Transkei (southern part) stretching from Uniondale in the west, to Middelburg in the north and Umtata in the east. There is clearly a need to develop a data base for this region especially as it has been afforded priority status in terms of the new regional development policy. The purpose of this Working Paper is therefore to provide a statistical profile of Region D, distinguishing where possible between various sub-regions within Region D and between Region D and the rest of South Africa. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Date Issued: 1986
A phenomenological analysis of the psychological manifestations of ontic conscience as derived from Heidegger's ontological conception of that phenomenon
- Authors: Parker, Michael Alan
- Date: 1986
- Subjects: Conscience , Heidegger, Martin, 1889-1976
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: vital:2911 , http://hdl.handle.net/10962/d1002076
- Description: The aim of this study was to investigate ontic conscience, as derived from Heidegger's ontological conception of conscience, as it is lived in concrete experience. Having established, through a close examination of Heidegger's writings on conscience, a question which would elicit actual experience of this phenomenon, the researcher collected sixty-four written accounts of these experiences. Of these he chose the four psychologically richest accounts and, having interviewed each of these four subjects on his situated experience, analysed in detail (using the phenomenological method) the resulting protocols comprising the written accounts and interviews. He then explicated the structure of conscience within its context of authenticity and inauthenticity. The context of conscience was discovered to be such that the person, having surrendered himself to others' experience and expectations of him, lives a pretence in the service of (inauthentically) being-for-others. He loses his sense of (bodily) self in the process, and it is at this point of his living at the extremes of inauthenticity, that he is forced to realise his own (authentic) reality which he has hitherto been concealing both from himself and from others. His primary attunement is reflected in feelings of betrayal, guilt, shame, dread and ambivalence. Through openly and resolutely living his authentic experience, he heals the rupture in his existence between what is revealed (his being-for-others) and what is concealed (his authentic experience), and feels liberated in so doing. This structure of conscience was dialogued with the writings of existential and psychoanalytic philosophers and psychologists in the context of discussing particular areas of psychological significance such as self, others, meaning, awareness and psychotherapy.
- Full Text:
- Date Issued: 1986
- Authors: Parker, Michael Alan
- Date: 1986
- Subjects: Conscience , Heidegger, Martin, 1889-1976
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: vital:2911 , http://hdl.handle.net/10962/d1002076
- Description: The aim of this study was to investigate ontic conscience, as derived from Heidegger's ontological conception of conscience, as it is lived in concrete experience. Having established, through a close examination of Heidegger's writings on conscience, a question which would elicit actual experience of this phenomenon, the researcher collected sixty-four written accounts of these experiences. Of these he chose the four psychologically richest accounts and, having interviewed each of these four subjects on his situated experience, analysed in detail (using the phenomenological method) the resulting protocols comprising the written accounts and interviews. He then explicated the structure of conscience within its context of authenticity and inauthenticity. The context of conscience was discovered to be such that the person, having surrendered himself to others' experience and expectations of him, lives a pretence in the service of (inauthentically) being-for-others. He loses his sense of (bodily) self in the process, and it is at this point of his living at the extremes of inauthenticity, that he is forced to realise his own (authentic) reality which he has hitherto been concealing both from himself and from others. His primary attunement is reflected in feelings of betrayal, guilt, shame, dread and ambivalence. Through openly and resolutely living his authentic experience, he heals the rupture in his existence between what is revealed (his being-for-others) and what is concealed (his authentic experience), and feels liberated in so doing. This structure of conscience was dialogued with the writings of existential and psychoanalytic philosophers and psychologists in the context of discussing particular areas of psychological significance such as self, others, meaning, awareness and psychotherapy.
- Full Text:
- Date Issued: 1986
A preliminary investigation into the use of computers in the teaching of mathematics
- Van Hille, Gilles Ernst Willem
- Authors: Van Hille, Gilles Ernst Willem
- Date: 1986
- Subjects: Mathematics -- Computer-assisted instruction Mathematics -- Study and teaching (Secondary) -- Data processing Mathematics -- Study and teaching -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1844 , http://hdl.handle.net/10962/d1004382
- Description: Like many South African high school mathematics teachers I have followed the development of computers with interest and I have tried wherever possible to gain some experience on them. Thus when microcomputers became more readily available the mathematics department at our school, Graeme College in Grahamstown, motivated for the school to acquire this powerful new tool. The eventual outcome was that the Old Boys' Association donated to the school 3 BBC B microcomputers with monitors, a disc drive, a printer and two tape recorders. These have now been in the school for three years. The acquisition prompted this research project which takes the following form:- 1) An investigation into some of the uses of microcomputers in schools and, in particular, in the mathematics classroom. 2) A statement on the present position adopted by the Cape Education Department on the use of computers in schools. 3) A study of what the experience has been in other countries, particularly in Britain and the United States of America. 4) A description of an investigation which was undertaken at our school using the method of Action Research and Triangulation. Its aim was to investigate the feasibility of using a microcomputer to aid in the teaching of mathematics and the reaction of the pupils to this innovation. Three different approaches were implemented. a) The algorithmic approach: In this investigation a class of standard eight pupils were required, with the help of the teacher, to write, enter and test a short computer program which would solve any pair of simultaneous linear equations of the form, ax + by = c. Their reaction to this form of instruction was noted by myself and a non-participant observer. The pupils themselves were also asked to express their reactions, both verbally and by filling in a prepared questionnaire. Examples of worksheets, exam questions and analysed questionnaires are given in the appendix. Short programs which examine various other mathematical concepts are also listed and discussed. b) The audio-visual approach: In this case use was made of a graphs software package in which the computer would draw either a straight line, circle, parabola or hyperbola when the appropriate variables were entered. This package also includes a graph game facility where participants are required to find the equation of the graph which will pass through three given points. Points are awarded if the correct type of graph is chosen and the variables are entered within a certain time interval. The pupils involved in this investigation were standard eight higher grade mathematics pupils and their reaction to this form of instruction was again noted using the methods described in (a) above. c) Computer Aided Instruction: Here I was most fortunate to be able to make use of the Rhodes University PLATO Centre. This allowed me to take a class of eighteen standard eight higher grade mathematics pupils to the Centre. Here during four sessions, each of just over an hour, the pupils interacted with the software on the computer terminal. The software used was a set of five lessons written by Barbara Lederman of the Community College Maths Group, of the University of Illinois in 1976. The lessons give instruction and require the pupils to transform, plot and draw the graphs of linear equations of the form, ax + by + c = 0, x = c and y = b. They are also taught and required to find the equations of given straight lines. Their reactions to this form of instruction are discussed after each session. 5) In conclusion some thoughts are given on how computers can best be utilised in the school situation, with particular reference to the teaching of mathematics.
- Full Text:
- Date Issued: 1986
- Authors: Van Hille, Gilles Ernst Willem
- Date: 1986
- Subjects: Mathematics -- Computer-assisted instruction Mathematics -- Study and teaching (Secondary) -- Data processing Mathematics -- Study and teaching -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1844 , http://hdl.handle.net/10962/d1004382
- Description: Like many South African high school mathematics teachers I have followed the development of computers with interest and I have tried wherever possible to gain some experience on them. Thus when microcomputers became more readily available the mathematics department at our school, Graeme College in Grahamstown, motivated for the school to acquire this powerful new tool. The eventual outcome was that the Old Boys' Association donated to the school 3 BBC B microcomputers with monitors, a disc drive, a printer and two tape recorders. These have now been in the school for three years. The acquisition prompted this research project which takes the following form:- 1) An investigation into some of the uses of microcomputers in schools and, in particular, in the mathematics classroom. 2) A statement on the present position adopted by the Cape Education Department on the use of computers in schools. 3) A study of what the experience has been in other countries, particularly in Britain and the United States of America. 4) A description of an investigation which was undertaken at our school using the method of Action Research and Triangulation. Its aim was to investigate the feasibility of using a microcomputer to aid in the teaching of mathematics and the reaction of the pupils to this innovation. Three different approaches were implemented. a) The algorithmic approach: In this investigation a class of standard eight pupils were required, with the help of the teacher, to write, enter and test a short computer program which would solve any pair of simultaneous linear equations of the form, ax + by = c. Their reaction to this form of instruction was noted by myself and a non-participant observer. The pupils themselves were also asked to express their reactions, both verbally and by filling in a prepared questionnaire. Examples of worksheets, exam questions and analysed questionnaires are given in the appendix. Short programs which examine various other mathematical concepts are also listed and discussed. b) The audio-visual approach: In this case use was made of a graphs software package in which the computer would draw either a straight line, circle, parabola or hyperbola when the appropriate variables were entered. This package also includes a graph game facility where participants are required to find the equation of the graph which will pass through three given points. Points are awarded if the correct type of graph is chosen and the variables are entered within a certain time interval. The pupils involved in this investigation were standard eight higher grade mathematics pupils and their reaction to this form of instruction was again noted using the methods described in (a) above. c) Computer Aided Instruction: Here I was most fortunate to be able to make use of the Rhodes University PLATO Centre. This allowed me to take a class of eighteen standard eight higher grade mathematics pupils to the Centre. Here during four sessions, each of just over an hour, the pupils interacted with the software on the computer terminal. The software used was a set of five lessons written by Barbara Lederman of the Community College Maths Group, of the University of Illinois in 1976. The lessons give instruction and require the pupils to transform, plot and draw the graphs of linear equations of the form, ax + by + c = 0, x = c and y = b. They are also taught and required to find the equations of given straight lines. Their reactions to this form of instruction are discussed after each session. 5) In conclusion some thoughts are given on how computers can best be utilised in the school situation, with particular reference to the teaching of mathematics.
- Full Text:
- Date Issued: 1986
A review of issues related to planning and development in Grahamstown: growth and development in Grahamstown
- Authors: Taylor, Beverley J
- Date: 1986
- Subjects: Housing -- South Africa -- Grahamstown City planning -- South Africa -- Grahamstown -- Public opinion Grahamstown (South Africa) -- Economic conditions Grahamstown (South Africa) -- Social conditions
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/1763 , vital:20223 , ISBN 0868101419
- Description: Towards the end of 1984 the Development Studies Unit (DSU) in the Institute of Social and Economic Research (ISER) at Rhodes University identified a need to undertake an investigation into the status of overall physical and socioeconomic planning and development in Grahamstown. The initial intention of such an investigation was to identify, analyse and assess existing research related to the development of Grahamstown in order to provide a benchmark that could reduce the incidence of duplication and overlap in future research projects and to provide a point of departure for the design of more specific and action-oriented research and the formulation of feasible strategies for future development in the City. During the course of comprehensive background investigation and discussions with a wide range of local interest groups, it became clear that the proposed review of issues related to planning and development in Grahamstown would be far more extensive than originally anticipated. In addition, 1985 turned out to be an eventful year and the DSU actively encouraged research by other agencies and individuals into related issues which were deemed to be an integral part of the proposed review. For these reasons, it was decided to publish the preliminary research results in a series of Development Studies Working Papers to provide a focus of attention for particular aspects of the work. This was felt to be in accordance with the intent of the ISER Development Studies Working Paper Series which is to publish the basic results of research undertaken in order to facilitate and encourage its further development into more substantial publications. This has resulted in a Series of Working Papers to be published during 1986 under the general title of "A Review of Issues Related to Planning and Development in Grahamstown". This Working Paper is the third in the Series and deals with attitudes and perceptions regarding growth and development in Grahamstown. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Date Issued: 1986
- Authors: Taylor, Beverley J
- Date: 1986
- Subjects: Housing -- South Africa -- Grahamstown City planning -- South Africa -- Grahamstown -- Public opinion Grahamstown (South Africa) -- Economic conditions Grahamstown (South Africa) -- Social conditions
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/1763 , vital:20223 , ISBN 0868101419
- Description: Towards the end of 1984 the Development Studies Unit (DSU) in the Institute of Social and Economic Research (ISER) at Rhodes University identified a need to undertake an investigation into the status of overall physical and socioeconomic planning and development in Grahamstown. The initial intention of such an investigation was to identify, analyse and assess existing research related to the development of Grahamstown in order to provide a benchmark that could reduce the incidence of duplication and overlap in future research projects and to provide a point of departure for the design of more specific and action-oriented research and the formulation of feasible strategies for future development in the City. During the course of comprehensive background investigation and discussions with a wide range of local interest groups, it became clear that the proposed review of issues related to planning and development in Grahamstown would be far more extensive than originally anticipated. In addition, 1985 turned out to be an eventful year and the DSU actively encouraged research by other agencies and individuals into related issues which were deemed to be an integral part of the proposed review. For these reasons, it was decided to publish the preliminary research results in a series of Development Studies Working Papers to provide a focus of attention for particular aspects of the work. This was felt to be in accordance with the intent of the ISER Development Studies Working Paper Series which is to publish the basic results of research undertaken in order to facilitate and encourage its further development into more substantial publications. This has resulted in a Series of Working Papers to be published during 1986 under the general title of "A Review of Issues Related to Planning and Development in Grahamstown". This Working Paper is the third in the Series and deals with attitudes and perceptions regarding growth and development in Grahamstown. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Date Issued: 1986
A review of the sediment-hosted, disseminated precious metal deposits of Nevada : geological setting, classification, genesis and exploration
- Authors: Ash, Philip John
- Date: 1986
- Subjects: Ore deposits
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4906 , http://hdl.handle.net/10962/d1001566
- Description: Carlin-type, fine-grained, "invisible" or Disseminated Replacement Type gold-silver deposits are all different names for a major new type of ore deposit that is currently being extensively developed in the Western United States. This type of deposit is now being found elsewhere. Thus a descriptive empirical model that emphasizes the geological and geochemical environment of formation is needed to assist the mining industry in the search for similar deposits. These deposits are typically formed in carbonaceous, silty dolomites and Iimestones or mineralization calcareous siltstones rocks and is exceedingly fine-grained is disseminated in the and claystones. host sedimentary Gold-silver , ore. Primary alteration usually less than one micron in size in unoxidized types include decalcification, argillitization, silicification resulting in the and pyritization. Silicification is commonly intense formation of jasperoid bodies which may be the host to higher grade ore. Supergene alteration is dominated by oxidation resulting in the formation of numerous oxides and sulphates and the release of gold from its association with sulphides and organic carbon. elements are As, Ba, Hg, Sb, and TI. Commonly associated trace Available geological, geochemical, fluid inclusion and stable-isotope studies lead to the conclusion that a circulating hydrothermal system is the important factor necessary for gold-silver concentration and deposition. A direct genetic or only casual relation between are deposition and discrete igneous formations remains unclear. However, it is considered that volcanism provided the source of heat necessary for the generation of a circulating hydrothermal system. High angle faults and fold structures facilitate transport and are of prime importance in directing are fluids to favourable host lithologies. The host rocks, overwhelmingly carbonate - rich, include those whose original and/or altered compositions and resulting permeability provide favourable sites for the precipitation of disseminated gold. The processes specialized. resulting Any th ick in the formation of these deposits are section of carbonate rocks has the potential not to produce Disseminated Replacement Type deposits wherever underlying igneous activity has developed a hydrothermal system
- Full Text:
- Date Issued: 1986
- Authors: Ash, Philip John
- Date: 1986
- Subjects: Ore deposits
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4906 , http://hdl.handle.net/10962/d1001566
- Description: Carlin-type, fine-grained, "invisible" or Disseminated Replacement Type gold-silver deposits are all different names for a major new type of ore deposit that is currently being extensively developed in the Western United States. This type of deposit is now being found elsewhere. Thus a descriptive empirical model that emphasizes the geological and geochemical environment of formation is needed to assist the mining industry in the search for similar deposits. These deposits are typically formed in carbonaceous, silty dolomites and Iimestones or mineralization calcareous siltstones rocks and is exceedingly fine-grained is disseminated in the and claystones. host sedimentary Gold-silver , ore. Primary alteration usually less than one micron in size in unoxidized types include decalcification, argillitization, silicification resulting in the and pyritization. Silicification is commonly intense formation of jasperoid bodies which may be the host to higher grade ore. Supergene alteration is dominated by oxidation resulting in the formation of numerous oxides and sulphates and the release of gold from its association with sulphides and organic carbon. elements are As, Ba, Hg, Sb, and TI. Commonly associated trace Available geological, geochemical, fluid inclusion and stable-isotope studies lead to the conclusion that a circulating hydrothermal system is the important factor necessary for gold-silver concentration and deposition. A direct genetic or only casual relation between are deposition and discrete igneous formations remains unclear. However, it is considered that volcanism provided the source of heat necessary for the generation of a circulating hydrothermal system. High angle faults and fold structures facilitate transport and are of prime importance in directing are fluids to favourable host lithologies. The host rocks, overwhelmingly carbonate - rich, include those whose original and/or altered compositions and resulting permeability provide favourable sites for the precipitation of disseminated gold. The processes specialized. resulting Any th ick in the formation of these deposits are section of carbonate rocks has the potential not to produce Disseminated Replacement Type deposits wherever underlying igneous activity has developed a hydrothermal system
- Full Text:
- Date Issued: 1986
A study of petrol and diesel fuel blends with special reference to their thermodynamic properties and phase equilibria
- Authors: Heyward, Caroline
- Date: 1986
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:21167 , http://hdl.handle.net/10962/6695
- Description: The ternary phase behaviour of the n-heptane-l-propanol-water system was studied and compared with the theoretical prediction based on the UNIQUAC model for non-electrolyte solutions. The results showed that this model adequately approximated experimental studies. The excess enthalpies and excess volumes for several binary mixtures were determined. The excess enthalpies were measured using a LKB flow microcalorimeter and the excess -volumes determined using a PAAR densitometer. The study showed that no significant enthalpy or volume changes occurred when petrol/n-heptane were mixed with alcohols. Ternary phase diagrams, including tie lines have been determined for a number of petrol-alcohol-water systems (including the Sasol blend of alcohols). The tie line results show that the concentration of water in the water-rich layer is strongly dependent on the type of alcohol used. The Sasol alcohol blended with petrol resulted in a high water concentration in the water-rich layer which forms on phase separation. This is believed to contribute significantly to the corrosion problems experienced by motorists using the Sasol blended fuel on the Witwatersrand. The effect of temperature on several of these blends was included in the study. Diesel-alcohol blends and the co-solvent properties of ethyl acetate investigated. Ethyl acetate ensures miscibility at low concentrations for diesel-ethanol blends. Octyl nitrate and two cetane improvers from AECI were assessed in terms of their ability to restore cetane rating of blended diesel fuel to that of pure diesel fuel. The results indicated that all three samples were successful in this application.
- Full Text:
- Date Issued: 1986
- Authors: Heyward, Caroline
- Date: 1986
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:21167 , http://hdl.handle.net/10962/6695
- Description: The ternary phase behaviour of the n-heptane-l-propanol-water system was studied and compared with the theoretical prediction based on the UNIQUAC model for non-electrolyte solutions. The results showed that this model adequately approximated experimental studies. The excess enthalpies and excess volumes for several binary mixtures were determined. The excess enthalpies were measured using a LKB flow microcalorimeter and the excess -volumes determined using a PAAR densitometer. The study showed that no significant enthalpy or volume changes occurred when petrol/n-heptane were mixed with alcohols. Ternary phase diagrams, including tie lines have been determined for a number of petrol-alcohol-water systems (including the Sasol blend of alcohols). The tie line results show that the concentration of water in the water-rich layer is strongly dependent on the type of alcohol used. The Sasol alcohol blended with petrol resulted in a high water concentration in the water-rich layer which forms on phase separation. This is believed to contribute significantly to the corrosion problems experienced by motorists using the Sasol blended fuel on the Witwatersrand. The effect of temperature on several of these blends was included in the study. Diesel-alcohol blends and the co-solvent properties of ethyl acetate investigated. Ethyl acetate ensures miscibility at low concentrations for diesel-ethanol blends. Octyl nitrate and two cetane improvers from AECI were assessed in terms of their ability to restore cetane rating of blended diesel fuel to that of pure diesel fuel. The results indicated that all three samples were successful in this application.
- Full Text:
- Date Issued: 1986
A study of petrol and diesel fuel blends with special reference to their thermodynamic propeties and phase equilibria
- Authors: Hayward, Caroline
- Date: 1986
- Subjects: Gasoline , Diesel fuels , Thermodynamics , Liquid-liquid equilibrium , Alcohol as fuel
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4065 , http://hdl.handle.net/10962/d1004902 , Gasoline , Diesel fuels , Thermodynamics , Liquid-liquid equilibrium , Alcohol as fuel
- Description: The ternary phase behaviour of the n-heptane-l-propanol-water system was studied and compared with the theoretical prediction based on the UNIQUAC model for non-electrolyte solutions. The results showed that this model adequately approximated experimental studies. The excess enthalpies and excess volumes for several binary mixtures were determined. The excess enthalpies were measured using a LKB flow microcalorimeter and the excess -volumes determined using a PAAR densitometer. The study showed that no significant enthalpy or volume changes occurred when petrol/n-heptane were mixed with alcohols . Ternary phase diagrams, including tie lines have been determined for a number of petrol-alcohol-water systems (including the Sasol blend of alcohols). The tie line results show that the concentration of water in the water-rich layer is strongly dependent on the type of alcohol used. The Sasol alcohol blended with petrol resulted in a high water concentration in the water-rich layer which forms on phase separation. This is believed to contribute significantly to the corrosion problems experienced by motorists using the Sasol blended fuel on the Witwatersrand. The effect of temperature on several of these blends was included in the study. Diesel-alcohol blends and the co-solvent properties of ethyl acetate investigated. Ethyl acetate ensures miscibility at low concentrations for diesel-ethanol blends. Octyl nitrate and two cetane improvers from AECI were assessed in terms of their ability to restore cetane rating of blended diesel fuel to that of pure diesel fuel. The results indicated that all three samples were successful in this application. , KMBT_363
- Full Text:
- Date Issued: 1986
- Authors: Hayward, Caroline
- Date: 1986
- Subjects: Gasoline , Diesel fuels , Thermodynamics , Liquid-liquid equilibrium , Alcohol as fuel
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4065 , http://hdl.handle.net/10962/d1004902 , Gasoline , Diesel fuels , Thermodynamics , Liquid-liquid equilibrium , Alcohol as fuel
- Description: The ternary phase behaviour of the n-heptane-l-propanol-water system was studied and compared with the theoretical prediction based on the UNIQUAC model for non-electrolyte solutions. The results showed that this model adequately approximated experimental studies. The excess enthalpies and excess volumes for several binary mixtures were determined. The excess enthalpies were measured using a LKB flow microcalorimeter and the excess -volumes determined using a PAAR densitometer. The study showed that no significant enthalpy or volume changes occurred when petrol/n-heptane were mixed with alcohols . Ternary phase diagrams, including tie lines have been determined for a number of petrol-alcohol-water systems (including the Sasol blend of alcohols). The tie line results show that the concentration of water in the water-rich layer is strongly dependent on the type of alcohol used. The Sasol alcohol blended with petrol resulted in a high water concentration in the water-rich layer which forms on phase separation. This is believed to contribute significantly to the corrosion problems experienced by motorists using the Sasol blended fuel on the Witwatersrand. The effect of temperature on several of these blends was included in the study. Diesel-alcohol blends and the co-solvent properties of ethyl acetate investigated. Ethyl acetate ensures miscibility at low concentrations for diesel-ethanol blends. Octyl nitrate and two cetane improvers from AECI were assessed in terms of their ability to restore cetane rating of blended diesel fuel to that of pure diesel fuel. The results indicated that all three samples were successful in this application. , KMBT_363
- Full Text:
- Date Issued: 1986
A study of the marine algal epiphyte, Placophora binderi (J. Agardh) J.Agardh (Ceramiales : Rhodophycophyta)
- Authors: Hartley, Diana Hendy
- Date: 1986
- Subjects: Epiphytes , Marine algae , Codium , Ceramiales
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4177 , http://hdl.handle.net/10962/d1002025 , Epiphytes , Marine algae , Codium , Ceramiales
- Description: Placophora binderi can be described as an "obligate epiphyte" as it does not respond well to any culture conditions and is found growing only on other algae in the natural environment. This habit may have arisen as a response to the best available substrate in a harsh environment (Harlin 1971; Moss 1982). Any nutrient transfer which may occur between Placophora binderi and its basiphyte, usually various species of Codium, is probably by diffusion as rhizoids do not penetrate the basiphyte cells but simply lie between the Codium utricles providing better anchorage. A triphasic life history exists with isomorphic gametophyte, carposporophyte and tetrasporophyte generations. The male and female gametophytes are dioecious. This study confirms Scagel's (1953) observations for the development of the juvenile, mature and reproductive thallus. The juvenile develops as an erect polysiphonous thallus which produces a prostrate lobe as an adventitious branch from the basal segments. This prostrate lobe develops into the dorsiventrally flattened mature thallus. Reproductive structures are produced on erect branches which are initiated at the mature thallus margins. The gametophyte develops on evanescent trichoblasts produced on erect reproductive branches while the tetra sporophyte develops within these erect branches. The female gametophyte has a four-celled carpogonial branch with an auxiliary cell forming after fertilisation from the supporting cell. At the electron microscope level several vesicle types were seen in the reproductive organs. In the male, spermatial vesicles are produced which probably aid in release of the spermatia (Kugrens 1980). These are also visible under the light microscope. In carposporogenesis and tetrasporogenesis, three vesicle types are produced. Striated vesicles appear for a short while during the early stages and probably function as protein stores. Fibrillar vesicles are large and visible under the light microscope. These probably act as carbohydrate storage organelles (Triemer and Vasconcelos 1979; Kugrens and West 1973c; Tripodi 1971). Cored vesicles appear late in sporogenesis and probably aid in adhesion once the spores have settled (Chamberlain and Evans 1973; Wetherbee 1978). Carpospores follow the "serial release" type pattern observed in Polysiphonia (Boney 1978). Tetraspores are released singly via a rupture in the tetrasporangial wall as in Ceramium rubrum (Chamberlain and Evans 1973). Both carpospores and tetraspores germinate in the typical bi-polar Ceramium-type pattern described by Dixon (1973)
- Full Text:
- Date Issued: 1986
- Authors: Hartley, Diana Hendy
- Date: 1986
- Subjects: Epiphytes , Marine algae , Codium , Ceramiales
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4177 , http://hdl.handle.net/10962/d1002025 , Epiphytes , Marine algae , Codium , Ceramiales
- Description: Placophora binderi can be described as an "obligate epiphyte" as it does not respond well to any culture conditions and is found growing only on other algae in the natural environment. This habit may have arisen as a response to the best available substrate in a harsh environment (Harlin 1971; Moss 1982). Any nutrient transfer which may occur between Placophora binderi and its basiphyte, usually various species of Codium, is probably by diffusion as rhizoids do not penetrate the basiphyte cells but simply lie between the Codium utricles providing better anchorage. A triphasic life history exists with isomorphic gametophyte, carposporophyte and tetrasporophyte generations. The male and female gametophytes are dioecious. This study confirms Scagel's (1953) observations for the development of the juvenile, mature and reproductive thallus. The juvenile develops as an erect polysiphonous thallus which produces a prostrate lobe as an adventitious branch from the basal segments. This prostrate lobe develops into the dorsiventrally flattened mature thallus. Reproductive structures are produced on erect branches which are initiated at the mature thallus margins. The gametophyte develops on evanescent trichoblasts produced on erect reproductive branches while the tetra sporophyte develops within these erect branches. The female gametophyte has a four-celled carpogonial branch with an auxiliary cell forming after fertilisation from the supporting cell. At the electron microscope level several vesicle types were seen in the reproductive organs. In the male, spermatial vesicles are produced which probably aid in release of the spermatia (Kugrens 1980). These are also visible under the light microscope. In carposporogenesis and tetrasporogenesis, three vesicle types are produced. Striated vesicles appear for a short while during the early stages and probably function as protein stores. Fibrillar vesicles are large and visible under the light microscope. These probably act as carbohydrate storage organelles (Triemer and Vasconcelos 1979; Kugrens and West 1973c; Tripodi 1971). Cored vesicles appear late in sporogenesis and probably aid in adhesion once the spores have settled (Chamberlain and Evans 1973; Wetherbee 1978). Carpospores follow the "serial release" type pattern observed in Polysiphonia (Boney 1978). Tetraspores are released singly via a rupture in the tetrasporangial wall as in Ceramium rubrum (Chamberlain and Evans 1973). Both carpospores and tetraspores germinate in the typical bi-polar Ceramium-type pattern described by Dixon (1973)
- Full Text:
- Date Issued: 1986
A view of Herrick's poetic world and its values: with some reference to his fairy poetry
- Authors: Letcher, Valerie Helen
- Date: 1986
- Subjects: Herrick, Robert, 1591-1674 , Fairy poetry, English , English poetry -- History and criticism
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2265 , http://hdl.handle.net/10962/d1004773 , Herrick, Robert, 1591-1674 , Fairy poetry, English , English poetry -- History and criticism
- Description: From the preface: Herrick was a prolific poet, and a remarkably consistent one. Hesperides encompasses a lifelong collection of poems on themes as diverse as serious reflections on life's brevity and the playful examination of the minutely imagined world of the fairies, yet his vision of life remains coherent. My purpose in this study is to try to see ·Herrick's secular work in its unity and as a whole, without claiming to consider every aspect of his secular poetry. (I have not attempted, for example, to consider his classical sources.) As my interest lies mainly in his values and vision, my emphasis is on theme and tone, and the way they indicate his conception of life. For this reason, I only occasionally consider Herrick's poetic techniques, such as his versification and language, and there are no detailed analyses of individual poems which examine them from every angle. In addition, I am almost entirely concerned here with Hesperides , the secular poetry, and not with Herrick's religious verse, which is collected under the title of His Noble Numbers. (Although Herrick calls his book Hesperides: or The Works both Humane and Divine, the arrangement within is clearly a division into Hesperides, the secular poetry, and His Noble Numbers, the religious verse.)
- Full Text:
- Date Issued: 1986
- Authors: Letcher, Valerie Helen
- Date: 1986
- Subjects: Herrick, Robert, 1591-1674 , Fairy poetry, English , English poetry -- History and criticism
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2265 , http://hdl.handle.net/10962/d1004773 , Herrick, Robert, 1591-1674 , Fairy poetry, English , English poetry -- History and criticism
- Description: From the preface: Herrick was a prolific poet, and a remarkably consistent one. Hesperides encompasses a lifelong collection of poems on themes as diverse as serious reflections on life's brevity and the playful examination of the minutely imagined world of the fairies, yet his vision of life remains coherent. My purpose in this study is to try to see ·Herrick's secular work in its unity and as a whole, without claiming to consider every aspect of his secular poetry. (I have not attempted, for example, to consider his classical sources.) As my interest lies mainly in his values and vision, my emphasis is on theme and tone, and the way they indicate his conception of life. For this reason, I only occasionally consider Herrick's poetic techniques, such as his versification and language, and there are no detailed analyses of individual poems which examine them from every angle. In addition, I am almost entirely concerned here with Hesperides , the secular poetry, and not with Herrick's religious verse, which is collected under the title of His Noble Numbers. (Although Herrick calls his book Hesperides: or The Works both Humane and Divine, the arrangement within is clearly a division into Hesperides, the secular poetry, and His Noble Numbers, the religious verse.)
- Full Text:
- Date Issued: 1986