A dielectric and spectroscopic study of molecular association in solutions of alcohols
- Authors: Campbell, Colin
- Date: 1975
- Subjects: Alcohols , Dielectrics , Spectrum analysis
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4454 , http://hdl.handle.net/10962/d1010424
- Description: This study is concerned with the association characteristics of solutions of alcohols in some non-polar solvents. The permittivities at 2 MHz and 25°C for solutions of the straight chain octanols in cyclohexane, carbon tetrachloride and benzene have been examined over the entire solute concentration range, with particular attention -1 being paid to the range below 0.1 molℓ⁻¹ By applying the Kirkwood- Fröhlich equation to these data, the apparent dipole moments of the alcohols as a function of concentration have been evaluated. These concentration dependencies have been correlated with infrared absorption results on the same systems to provide information on the sizes and configurations of the proposed hydrogen bonded multimers. It is concluded that, at very low solute concentrations, the alcohol molecules exist as monomers; but with increasing concentration, two types of hydrogen bonded multimers are formed, the first (at low concentrations) being of high dipole moment and the second (at higher concentrations) being of low dipole moment. At high concentrations, the molecules associate to form a three-dimensional network. Attempts have been made to determine equilibrium parameters for molecular models which are consistent with the qualitative understanding of the association behaviour. These parameters were obtained by applying least-squares, curve-fitting techniques to the low concentration permittivity data. A similar investigation has been conducted on solutions of 2,3,4-trimethyl-3-pentanol in the same solvents. The steric hindrance around the hydroxyl group of this alcohol modifies the association behaviour so that a three-dimensional network does not form at high solute concentrations. Proton magnetic resonance chemical shifts for the hydroxyl proton of this alcohol in carbon tetrachloride solutions have been measured. Attempts have also been made to determine equilibrium parameters which describe formation of the hydrogen bonded multimers. To extend this study to include solutes other than octanols, similar experiments have been conducted on solutions of t-butanol in hexadecane, a system which has recently been investigated by other workers using different experimental techniques. The association behaviour of this system is qualitatively similar to that of the straight-chain octanols. The combination of permittivity and infrared measurements, although proving extremely powerful in interpreting the association characteristics of dilute alcohol solutions, is less adequate at high solute concentrations. Attention was therefore directed towards dielectric relaxation and viscosity studies to investigate concentrated solutions. The relaxation times at 20°C of the low frequency dispersion have been measured for solutions of 1-propanol, 1-butanol, 1-hexanol, 1-octanol and 1-decanol in cyclohexane using time domain reflectometry techniques. Similar measurements have also been made on solutions of 1-butanol and 1-octanol in carbon tetrachloride and in benzene. The concentration dependence of the viscosities of certain of these systems has also been examined in an independent study. The ratio of the dielectric relaxation time to the viscosity, the "reduced relaxation time", is qualitatively similar for each system studied. This similarity leads to an explanation of the molecular process responsible for the low frequency dispersion in terms of the proximity of the hydroxyl groups in concentrated alcohol solutions and the fraction of the groups which are not involved in hydrogen bonding.
- Full Text:
- Date Issued: 1975
- Authors: Campbell, Colin
- Date: 1975
- Subjects: Alcohols , Dielectrics , Spectrum analysis
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4454 , http://hdl.handle.net/10962/d1010424
- Description: This study is concerned with the association characteristics of solutions of alcohols in some non-polar solvents. The permittivities at 2 MHz and 25°C for solutions of the straight chain octanols in cyclohexane, carbon tetrachloride and benzene have been examined over the entire solute concentration range, with particular attention -1 being paid to the range below 0.1 molℓ⁻¹ By applying the Kirkwood- Fröhlich equation to these data, the apparent dipole moments of the alcohols as a function of concentration have been evaluated. These concentration dependencies have been correlated with infrared absorption results on the same systems to provide information on the sizes and configurations of the proposed hydrogen bonded multimers. It is concluded that, at very low solute concentrations, the alcohol molecules exist as monomers; but with increasing concentration, two types of hydrogen bonded multimers are formed, the first (at low concentrations) being of high dipole moment and the second (at higher concentrations) being of low dipole moment. At high concentrations, the molecules associate to form a three-dimensional network. Attempts have been made to determine equilibrium parameters for molecular models which are consistent with the qualitative understanding of the association behaviour. These parameters were obtained by applying least-squares, curve-fitting techniques to the low concentration permittivity data. A similar investigation has been conducted on solutions of 2,3,4-trimethyl-3-pentanol in the same solvents. The steric hindrance around the hydroxyl group of this alcohol modifies the association behaviour so that a three-dimensional network does not form at high solute concentrations. Proton magnetic resonance chemical shifts for the hydroxyl proton of this alcohol in carbon tetrachloride solutions have been measured. Attempts have also been made to determine equilibrium parameters which describe formation of the hydrogen bonded multimers. To extend this study to include solutes other than octanols, similar experiments have been conducted on solutions of t-butanol in hexadecane, a system which has recently been investigated by other workers using different experimental techniques. The association behaviour of this system is qualitatively similar to that of the straight-chain octanols. The combination of permittivity and infrared measurements, although proving extremely powerful in interpreting the association characteristics of dilute alcohol solutions, is less adequate at high solute concentrations. Attention was therefore directed towards dielectric relaxation and viscosity studies to investigate concentrated solutions. The relaxation times at 20°C of the low frequency dispersion have been measured for solutions of 1-propanol, 1-butanol, 1-hexanol, 1-octanol and 1-decanol in cyclohexane using time domain reflectometry techniques. Similar measurements have also been made on solutions of 1-butanol and 1-octanol in carbon tetrachloride and in benzene. The concentration dependence of the viscosities of certain of these systems has also been examined in an independent study. The ratio of the dielectric relaxation time to the viscosity, the "reduced relaxation time", is qualitatively similar for each system studied. This similarity leads to an explanation of the molecular process responsible for the low frequency dispersion in terms of the proximity of the hydroxyl groups in concentrated alcohol solutions and the fraction of the groups which are not involved in hydrogen bonding.
- Full Text:
- Date Issued: 1975
A holy people: a study in the ecclesiology of Andrew Murray
- Neethling, Johann Christiaan
- Authors: Neethling, Johann Christiaan
- Date: 1975
- Subjects: Murray, Andrew, 1828-1917 , Nederduitse Gereformeerde Kerk , Nederduitsch Hervormde Kerk van Afrika -- History , Nederduitse Gereformeerde Gemeente Worcester , Nederduitse Gereformeerde Gemeente Bloemfontein , Nederduitse Gereformeerde Gemeente Wellington , Theology, Doctrinal -- South Africa -- History , Church history
- Language: English
- Type: Thesis , Bachelor , BDiv
- Identifier: vital:1287 , http://hdl.handle.net/10962/d1013592
- Description: The thesis seeks to show Andrew Murray's growing understanding of what it meant to be the elect of God in contrast to other prevailing notions. In his confrontation with the Trekker communities, the majority of whom were rigid Calvinists, stressing a divine election based on the notions of biological and cultural identity, Murray found little of the holy behaviour which ought to characterize the people of God. The elect should be seen to be the elect by their fruits. Instead there was divisiveness, discrimination, party spirit and other forms of ungodliness. Faced with the immensity of the task in identifying the true Church and building God's people up in holiness, Murray began to sense the necessity of another 'dimension' within the Church's regular means of grace of preaching, the sacraments, and discipline. The revival of 1860, focussed Murray's attention in a new and vital way on the work of the Holy Spirit in breathing new life into the Church and in empowering believers to live lives pleasing to God. The 'indiscriminate' effects of the Holy Spirit's work convinced Murray that the Gospel and thus the Church was not the possession of the white colonist, Dutch or English, but that the black and brown man had an equal claim on the Gospel and as much right to become a member of Christ's Church. Murray's understanding of the Christian life as continual abiding in Christ by the power of the indwelling Holy Spirit meant that the believer came to have the mind of Christ and to partake of His holiness. This holiness evidenced itself in the believer having Christ's concern for the lost. Mission, therefore, became this supreme end of the Church. The struggle with the forces of liberalism raised the new issue that unbelievers could no longer be simply 'heathen blacks' or English but most of all Dutch. The support of the civil courts of those disciplined by the Church brought the whole problem of ecclesiology to the fore and led Murray to the conclusion of the necessary separation of the Church from the State. Murray's discovery that in various ages, nations and Church traditions there were those with the same passionate desire for God' s holiness, led him into an increasing awareness of the catholicity of the Church. True holiness demanded the love and unity of all God's children. Murray's ecclesiology was a biblically-based one at a time when communities were beginning to be formed by other than biblical notions and principles and by a people who were trying to pack more into the notion of a people of God than Scripture gave warrant for. The emphasis for which Murray stood made for an ecclesiology that simply could not be confined.
- Full Text:
- Date Issued: 1975
- Authors: Neethling, Johann Christiaan
- Date: 1975
- Subjects: Murray, Andrew, 1828-1917 , Nederduitse Gereformeerde Kerk , Nederduitsch Hervormde Kerk van Afrika -- History , Nederduitse Gereformeerde Gemeente Worcester , Nederduitse Gereformeerde Gemeente Bloemfontein , Nederduitse Gereformeerde Gemeente Wellington , Theology, Doctrinal -- South Africa -- History , Church history
- Language: English
- Type: Thesis , Bachelor , BDiv
- Identifier: vital:1287 , http://hdl.handle.net/10962/d1013592
- Description: The thesis seeks to show Andrew Murray's growing understanding of what it meant to be the elect of God in contrast to other prevailing notions. In his confrontation with the Trekker communities, the majority of whom were rigid Calvinists, stressing a divine election based on the notions of biological and cultural identity, Murray found little of the holy behaviour which ought to characterize the people of God. The elect should be seen to be the elect by their fruits. Instead there was divisiveness, discrimination, party spirit and other forms of ungodliness. Faced with the immensity of the task in identifying the true Church and building God's people up in holiness, Murray began to sense the necessity of another 'dimension' within the Church's regular means of grace of preaching, the sacraments, and discipline. The revival of 1860, focussed Murray's attention in a new and vital way on the work of the Holy Spirit in breathing new life into the Church and in empowering believers to live lives pleasing to God. The 'indiscriminate' effects of the Holy Spirit's work convinced Murray that the Gospel and thus the Church was not the possession of the white colonist, Dutch or English, but that the black and brown man had an equal claim on the Gospel and as much right to become a member of Christ's Church. Murray's understanding of the Christian life as continual abiding in Christ by the power of the indwelling Holy Spirit meant that the believer came to have the mind of Christ and to partake of His holiness. This holiness evidenced itself in the believer having Christ's concern for the lost. Mission, therefore, became this supreme end of the Church. The struggle with the forces of liberalism raised the new issue that unbelievers could no longer be simply 'heathen blacks' or English but most of all Dutch. The support of the civil courts of those disciplined by the Church brought the whole problem of ecclesiology to the fore and led Murray to the conclusion of the necessary separation of the Church from the State. Murray's discovery that in various ages, nations and Church traditions there were those with the same passionate desire for God' s holiness, led him into an increasing awareness of the catholicity of the Church. True holiness demanded the love and unity of all God's children. Murray's ecclesiology was a biblically-based one at a time when communities were beginning to be formed by other than biblical notions and principles and by a people who were trying to pack more into the notion of a people of God than Scripture gave warrant for. The emphasis for which Murray stood made for an ecclesiology that simply could not be confined.
- Full Text:
- Date Issued: 1975
Accident liability and primary process thinking : a study in ego psychology
- Authors: Nell, Oelrich
- Date: 1975
- Subjects: Automobile drivers -- Psychology , Ego (Psychology) , Traffic safety -- South Africa -- Psychological aspects , Liability for traffic accidents -- South Africa , Traffic accidents -- South Africa -- Psychological aspects
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3220 , http://hdl.handle.net/10962/d1012950
- Description: Serious efforts must be made to combat the high accident rate on the roads in the Republic of South Africa. The same spirit which exists in the field of medicine when there are evidences that an epidemic is beginning to take its toll, must come into being amongst those who are concerned with traffic and its problems. The public itself needs to become more aware of road safety. Many associations and institutions have been created to assist with the inculcation of the road safety ideal. The National Road Safety Council, which creates opportunities for investigation into aspects of road safety must continue to expand its sphere of influence. The research project contained on the following pages represents an attempt to contribute to the human factor in traffic safety, particularly by making a closer study of the driver of the motor vehicle. The writer is concerned with the carnage that is caused by road accidents. His previous study of personality and particularly of the projective techniques of assessment has prompted a consideration of the problem.
- Full Text:
- Date Issued: 1975
- Authors: Nell, Oelrich
- Date: 1975
- Subjects: Automobile drivers -- Psychology , Ego (Psychology) , Traffic safety -- South Africa -- Psychological aspects , Liability for traffic accidents -- South Africa , Traffic accidents -- South Africa -- Psychological aspects
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3220 , http://hdl.handle.net/10962/d1012950
- Description: Serious efforts must be made to combat the high accident rate on the roads in the Republic of South Africa. The same spirit which exists in the field of medicine when there are evidences that an epidemic is beginning to take its toll, must come into being amongst those who are concerned with traffic and its problems. The public itself needs to become more aware of road safety. Many associations and institutions have been created to assist with the inculcation of the road safety ideal. The National Road Safety Council, which creates opportunities for investigation into aspects of road safety must continue to expand its sphere of influence. The research project contained on the following pages represents an attempt to contribute to the human factor in traffic safety, particularly by making a closer study of the driver of the motor vehicle. The writer is concerned with the carnage that is caused by road accidents. His previous study of personality and particularly of the projective techniques of assessment has prompted a consideration of the problem.
- Full Text:
- Date Issued: 1975
Aenigmatite stability in silica-undersaturated rocks
- Authors: Marsh, Julian S
- Date: 1975
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/132942 , vital:36911 , https://doi.org/10.1007/BF00373333
- Description: Aenigmatite is common in many trachytes, phonolites and agpaitic nepheline syenites. Petrographic evidence suggests that the aenigmatite in these rocks arises by the reaction of Ti-magnetite with a peralkaline silica-undersaturated liquid, and it is postulated that a no-oxide field, where aenigmatite is stable, exists in alkaline undersaturated magmas.
- Full Text: false
- Date Issued: 1975
- Authors: Marsh, Julian S
- Date: 1975
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/132942 , vital:36911 , https://doi.org/10.1007/BF00373333
- Description: Aenigmatite is common in many trachytes, phonolites and agpaitic nepheline syenites. Petrographic evidence suggests that the aenigmatite in these rocks arises by the reaction of Ti-magnetite with a peralkaline silica-undersaturated liquid, and it is postulated that a no-oxide field, where aenigmatite is stable, exists in alkaline undersaturated magmas.
- Full Text: false
- Date Issued: 1975
An application of the natural area concept to East London apartment areas
- Authors: Brehmer, D A E
- Date: 1975
- Subjects: Natural areas -- South Africa -- East London , Apartment houses -- South Africa -- East London , Urban ecology (Sociology) -- South Africa -- East London
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:4872 , http://hdl.handle.net/10962/d1009694 , Natural areas -- South Africa -- East London , Apartment houses -- South Africa -- East London , Urban ecology (Sociology) -- South Africa -- East London
- Description: The world is faced with a population explosion, and cities are becoming ever larger. The world population will grow from its present 3500 million to more than 7 000 million by the year 2 000. The majority of cities are thus faced with the problem of housing vast numbers of people living in single family dwellings forming low density urban sprawl. Conditions are no different in South Africa where the present white population of about four million is expected to grow to between six and seven million by the year 2000. The present housing requirement (1970-75) for Whites, based on low and high population projections, is 32 732 and 40 150 houses respectively. From 1995-2000 the figures will have risen to 42 742 and 65 580 respectively. At that rate sprawl here will reach alarming proportions unless it can be curtailed by higher density housing. As the population trend does not seem likely to be reversed the problem lies in how to provide housing for an escalating population but at the same time to reduce urban sprawl and provide satisfactory living conditions.
- Full Text:
- Date Issued: 1975
- Authors: Brehmer, D A E
- Date: 1975
- Subjects: Natural areas -- South Africa -- East London , Apartment houses -- South Africa -- East London , Urban ecology (Sociology) -- South Africa -- East London
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:4872 , http://hdl.handle.net/10962/d1009694 , Natural areas -- South Africa -- East London , Apartment houses -- South Africa -- East London , Urban ecology (Sociology) -- South Africa -- East London
- Description: The world is faced with a population explosion, and cities are becoming ever larger. The world population will grow from its present 3500 million to more than 7 000 million by the year 2 000. The majority of cities are thus faced with the problem of housing vast numbers of people living in single family dwellings forming low density urban sprawl. Conditions are no different in South Africa where the present white population of about four million is expected to grow to between six and seven million by the year 2000. The present housing requirement (1970-75) for Whites, based on low and high population projections, is 32 732 and 40 150 houses respectively. From 1995-2000 the figures will have risen to 42 742 and 65 580 respectively. At that rate sprawl here will reach alarming proportions unless it can be curtailed by higher density housing. As the population trend does not seem likely to be reversed the problem lies in how to provide housing for an escalating population but at the same time to reduce urban sprawl and provide satisfactory living conditions.
- Full Text:
- Date Issued: 1975
Art and conservation
- Authors: Dent, Hugh R
- Date: 1975
- Subjects: Nature conservation Environmentalism Nature (Aesthetics)
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2479 , http://hdl.handle.net/10962/d1011070
- Description: There can be no doubt that population increase and environmental pollution are the world's biggest problems today. These pose serious threats to the quality of life and art. They can only be remedied by an efficient system of birth-control and sound compulsory education, in order to regain spiritual enlightenment. Intro. p. 1.
- Full Text:
- Date Issued: 1975
- Authors: Dent, Hugh R
- Date: 1975
- Subjects: Nature conservation Environmentalism Nature (Aesthetics)
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2479 , http://hdl.handle.net/10962/d1011070
- Description: There can be no doubt that population increase and environmental pollution are the world's biggest problems today. These pose serious threats to the quality of life and art. They can only be remedied by an efficient system of birth-control and sound compulsory education, in order to regain spiritual enlightenment. Intro. p. 1.
- Full Text:
- Date Issued: 1975
Art and the Nekyia : a study of the significance of the symbolic descent into Hades in art, myth and ritual
- Authors: Place, L B
- Date: 1975
- Subjects: Hell in art , Death in art , Death -- Psychological aspects , Hell in literature
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2490 , http://hdl.handle.net/10962/d1013039
- Description: Art has very littlo to do with the dead. Death alone is the negation of creation, ,while art is a vital force, a deeply instinctive, everlasting, continual revitalisation. Art is life and nature and it lives in the realms of imagination, magic and mystery. Its language is the language of myth, and its aim is Truth. Art is action and reaction and is reached in silence by the artist alone and individually - its climate is solitude and its paths are as devious and labyrinthine as any the soul can follow in search of self-knowledge and the divine. Chap. 1, p. 1.
- Full Text:
- Date Issued: 1975
- Authors: Place, L B
- Date: 1975
- Subjects: Hell in art , Death in art , Death -- Psychological aspects , Hell in literature
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2490 , http://hdl.handle.net/10962/d1013039
- Description: Art has very littlo to do with the dead. Death alone is the negation of creation, ,while art is a vital force, a deeply instinctive, everlasting, continual revitalisation. Art is life and nature and it lives in the realms of imagination, magic and mystery. Its language is the language of myth, and its aim is Truth. Art is action and reaction and is reached in silence by the artist alone and individually - its climate is solitude and its paths are as devious and labyrinthine as any the soul can follow in search of self-knowledge and the divine. Chap. 1, p. 1.
- Full Text:
- Date Issued: 1975
Die nywerheidsopleiding van vakleerlinge en hulle relatiewe invloed op die besetting van die arbeidsmark oor die afgelope tien jaar, met inbegrip van die toepaslike aspekte op die grensgebied
- Authors: De Beer, David Petrus
- Date: 1975
- Subjects: Apprentices -- Training -- South Africa -- Eastern Cape , Apprentices -- Labor market -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1082 , http://hdl.handle.net/10962/d1011032 , Apprentices -- Training -- South Africa -- Eastern Cape , Apprentices -- Labor market -- South Africa -- Eastern Cape
- Full Text:
- Date Issued: 1975
- Authors: De Beer, David Petrus
- Date: 1975
- Subjects: Apprentices -- Training -- South Africa -- Eastern Cape , Apprentices -- Labor market -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1082 , http://hdl.handle.net/10962/d1011032 , Apprentices -- Training -- South Africa -- Eastern Cape , Apprentices -- Labor market -- South Africa -- Eastern Cape
- Full Text:
- Date Issued: 1975
Doctrines on the universality of sin
- Authors: Van Rensburg, Lee
- Date: 1975
- Subjects: Sin , Good and evil , Sin -- Biblical teaching
- Language: English
- Type: Thesis , Bachelor , BDiv
- Identifier: vital:1288 , http://hdl.handle.net/10962/d1014577
- Description: [From chapter 1]. The doctrines on the universality of sin are attempts to give theological explanations for the empirical and historical evidence of the universality of sin. They are attempts to explain why it is that each and every person that enters this world has a bias towards sin ; why such a highly organized, intricate and majestically complex being like man, the crowning glory of the created realm in every case has this weakness we call sin ; why it is that after 6,000 years of the history of mankind the present generation is as plagued with this malfunction as the first; why it is that sooner or later all of us commit sin in one form or another. Indirectly these doctrines also seek to protect God's uniqueness and oneness against the dualism of evil and good and following from this second reason are attempts to explain the presence of sin within the good creation of God. However, these attempts are fraught with difficulties and invariably each explanation that is offered raises other pertinent issues that the Christian thinker does not wish to accept as side effects to his answer. This has resulted in scholars over the ages attempting to modify or reinterpret previous doctrines in order to allow for these issues to be taken into account. There has, therefore, as we shall discover, been much diversity and debate as to the form and contents of these doctrines.
- Full Text:
- Date Issued: 1975
- Authors: Van Rensburg, Lee
- Date: 1975
- Subjects: Sin , Good and evil , Sin -- Biblical teaching
- Language: English
- Type: Thesis , Bachelor , BDiv
- Identifier: vital:1288 , http://hdl.handle.net/10962/d1014577
- Description: [From chapter 1]. The doctrines on the universality of sin are attempts to give theological explanations for the empirical and historical evidence of the universality of sin. They are attempts to explain why it is that each and every person that enters this world has a bias towards sin ; why such a highly organized, intricate and majestically complex being like man, the crowning glory of the created realm in every case has this weakness we call sin ; why it is that after 6,000 years of the history of mankind the present generation is as plagued with this malfunction as the first; why it is that sooner or later all of us commit sin in one form or another. Indirectly these doctrines also seek to protect God's uniqueness and oneness against the dualism of evil and good and following from this second reason are attempts to explain the presence of sin within the good creation of God. However, these attempts are fraught with difficulties and invariably each explanation that is offered raises other pertinent issues that the Christian thinker does not wish to accept as side effects to his answer. This has resulted in scholars over the ages attempting to modify or reinterpret previous doctrines in order to allow for these issues to be taken into account. There has, therefore, as we shall discover, been much diversity and debate as to the form and contents of these doctrines.
- Full Text:
- Date Issued: 1975
Economic dualism and labour re-allocation in South Africa, 1917-1970
- Authors: Hindson, Douglas Carlisle
- Date: 1975
- Subjects: Labor policy -- South Africa -- History -- 20th century , Labor laws and legislation -- South Africa , Labor economics -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:1090 , http://hdl.handle.net/10962/d1012294 , Labor policy -- South Africa -- History -- 20th century , Labor laws and legislation -- South Africa , Labor economics -- South Africa
- Description: The central concern of this study is to analyse how the pattern of development in South Africa has influenced the long term growth of productive employment in the economy. The approach adopted is to appply a model of economic dualism to the South African case. Chapter 1, p. 1.
- Full Text:
- Date Issued: 1975
- Authors: Hindson, Douglas Carlisle
- Date: 1975
- Subjects: Labor policy -- South Africa -- History -- 20th century , Labor laws and legislation -- South Africa , Labor economics -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:1090 , http://hdl.handle.net/10962/d1012294 , Labor policy -- South Africa -- History -- 20th century , Labor laws and legislation -- South Africa , Labor economics -- South Africa
- Description: The central concern of this study is to analyse how the pattern of development in South Africa has influenced the long term growth of productive employment in the economy. The approach adopted is to appply a model of economic dualism to the South African case. Chapter 1, p. 1.
- Full Text:
- Date Issued: 1975
Enkele eksistensiële elemente in die prosawerk van Willem Elsschot
- Authors: Saayman, Ellen Tertia
- Date: 1975
- Subjects: Elsschot, Willem, 1882-1960 -- Criticism and interpretation
- Language: Afrikaans
- Type: Thesis , Masters , MA
- Identifier: vital:3634 , http://hdl.handle.net/10962/d1013113
- Description: Elsschot word dikwels 'n siniese skrywer genoem. Alvorens die geldigheid, al dan nie, van hierdie stalling nagegaan word, volg 'n aantal definisies om te probeer bepaal wat sinisme is. Van Dale gee die volgende verklaring van die woord CYNISCH: "schaamteloos ongevoelig, een stuitend of pijnlijk ongeloof in het goede aan den dag leggende, niet gelovende aan oprechtheid of deugd bij de motieven en daden der mensen en dit met spottende lach of op scherpe,sarcastische wijze laten blijken". Intro., p. 1.
- Full Text:
- Date Issued: 1975
- Authors: Saayman, Ellen Tertia
- Date: 1975
- Subjects: Elsschot, Willem, 1882-1960 -- Criticism and interpretation
- Language: Afrikaans
- Type: Thesis , Masters , MA
- Identifier: vital:3634 , http://hdl.handle.net/10962/d1013113
- Description: Elsschot word dikwels 'n siniese skrywer genoem. Alvorens die geldigheid, al dan nie, van hierdie stalling nagegaan word, volg 'n aantal definisies om te probeer bepaal wat sinisme is. Van Dale gee die volgende verklaring van die woord CYNISCH: "schaamteloos ongevoelig, een stuitend of pijnlijk ongeloof in het goede aan den dag leggende, niet gelovende aan oprechtheid of deugd bij de motieven en daden der mensen en dit met spottende lach of op scherpe,sarcastische wijze laten blijken". Intro., p. 1.
- Full Text:
- Date Issued: 1975
From Frontier to Midlands : a history of the Graaff-Reinet district, 1786-1910
- Authors: Smith, Kenneth Wyndham
- Date: 1975
- Subjects: Graaff-Reinet (South Africa) -- History , South Africa -- Economic conditions -- History , South Africa -- Politics and government -- History , Frontier and pioneer life -- Graaff-Reinet
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2615 , http://hdl.handle.net/10962/d1013242
- Description: The study of local history in South Africa is still in its infancy and has not been accorded the same recognition as elsewhere. There is no convenient manual to guide the would-be local historian of the Cape. There are few models that provide an insight into the main problems encountered by the local historian of a Cape community. In such local histories as exist, attention has been focussed predominantly on the foundation and physical growth of towns, the naming of streets, the establishment of schools and hospitals. Many of these accounts were written for publicity purposes or to commemorate the founding of towns. Although there is no history of the Dutch Reformed Church in Graaff-Reinet, the history of local congregations of the Dutch Reformed Church has generally been well covered in the form of Gedenkboeke and other studies. These frequently have a particular relevance as many towns such as Burgersdorp and Colesberg were founded as a result of the initiative of the church. Preface.
- Full Text:
- Date Issued: 1975
- Authors: Smith, Kenneth Wyndham
- Date: 1975
- Subjects: Graaff-Reinet (South Africa) -- History , South Africa -- Economic conditions -- History , South Africa -- Politics and government -- History , Frontier and pioneer life -- Graaff-Reinet
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2615 , http://hdl.handle.net/10962/d1013242
- Description: The study of local history in South Africa is still in its infancy and has not been accorded the same recognition as elsewhere. There is no convenient manual to guide the would-be local historian of the Cape. There are few models that provide an insight into the main problems encountered by the local historian of a Cape community. In such local histories as exist, attention has been focussed predominantly on the foundation and physical growth of towns, the naming of streets, the establishment of schools and hospitals. Many of these accounts were written for publicity purposes or to commemorate the founding of towns. Although there is no history of the Dutch Reformed Church in Graaff-Reinet, the history of local congregations of the Dutch Reformed Church has generally been well covered in the form of Gedenkboeke and other studies. These frequently have a particular relevance as many towns such as Burgersdorp and Colesberg were founded as a result of the initiative of the church. Preface.
- Full Text:
- Date Issued: 1975
Interactions between steroidal anti-inflammatory agents and collagen
- Authors: Kanfer, Isadore
- Date: 1975
- Subjects: Anti-inflammatory agents Collagen
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3849 , http://hdl.handle.net/10962/d1012620
- Description: Much research has been done on the formation of fibrils from solutions of soluble collagen in vitro in order to gain some knowledge of the mechanisms which may occur in vivo. The in vitro formation of fibres from solutions of collagen has been shown to be extremely sensitive to the nature of the solution environment and the presence of added chemical compounds, and thus constitutes an interesting system for the study of collagen-small molecule inter actions. The present study is concerned with the effects of various corticosteroid drugs, used medicinally as anti-inflammatory agents, on collagen in solution. As these corticosteroids are administered to reduce inflammation in conditions such as rheumatoid arthritis and a host of other pathological conditions in which collagen is implicated, this work has been undertaken in order to establish and charac teri ze any binding mechanisms which may be involved. Furthermore, the corticosteroid drugs available commercially in pure form as the free base or as the water-soluble ester salts offer an interesting range of structural and stereochemical variants for the study of their reaction with a complex and biologically important protein molecule such as collagen. A great deal of research on drug- protein interactions (Goldstein, 1949; Meyer and Guttman, 1968a) and more specifically, steroid-protein interactions have been reported over the years (Daughaday, 1959; Sandberg et al., 1966; Villee and Engel, 1961; Westphal , 1971). Comprehensive reports, however, on steroid-collagen interactions in vitro are conspicuously absent from modern scientific literature although relatively superficial accounts have been published (Menczel and Maibach, 1972; Eik-Nes et al., 1954). Although work involving the above has appeared relating specifically to the effects of steroids on collagen biosynthesis both in vivo and in vitro there have been minimal accounts of steroid-collagen interactions tailored to characterize the binding at the molecular level. The effect of corticosteroids on the metabolism of connective tissue has also received special attention (Asboe-Hansen, 1959; Kivirikko, 1953; Nakagawa and Tsurufuji, 1972). Recently, Uitto et al. (1972) reported the effects of several anti-inflammatory corticosteroids on collagen biosynthesis in vitro, whilst Aalto and Kulonen (1972) reported the effects of several antirheumatic drugs on the synthesis of collagen and other proteins in vitro. The interactions between collagen and certain drugs has also been briefly reviewed (Chvapil, 1967). Much data also exists on the binding of a wide range of small molecules and ions with serum albumin (Steinhardt and Reynolds, 1969; Scatchard, 1949; Klotz, 1950). Serum albumin, being specialized for a very general transport function and apparently designed for the purpose of combining with a large range of small molecules, has a proportion of possible reactive sites 'buried' within the molecule itself because of its folded conformation. In addition, serum albumin shows a high degree of cooperative binding in contrast to collagen. The latter molecule, with its larger molecular size and weight is specialized for a biologically structural function and has a higher proportion of possible reactive sites which appear relatively more accessible to ligands. A study of the interactions between corticosteroids and collagen thus provides the opportunity to investigate a protein which is very different from the much studied serum albumin. Because of the limited information available regarding the interaction of steroid drugs and collagen at the molecular level, studies of this nature are relevant to the understanding of the mode of action of steroid compounds which are such an important group of therapeutic substances used in modern medicine.
- Full Text:
- Date Issued: 1975
- Authors: Kanfer, Isadore
- Date: 1975
- Subjects: Anti-inflammatory agents Collagen
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3849 , http://hdl.handle.net/10962/d1012620
- Description: Much research has been done on the formation of fibrils from solutions of soluble collagen in vitro in order to gain some knowledge of the mechanisms which may occur in vivo. The in vitro formation of fibres from solutions of collagen has been shown to be extremely sensitive to the nature of the solution environment and the presence of added chemical compounds, and thus constitutes an interesting system for the study of collagen-small molecule inter actions. The present study is concerned with the effects of various corticosteroid drugs, used medicinally as anti-inflammatory agents, on collagen in solution. As these corticosteroids are administered to reduce inflammation in conditions such as rheumatoid arthritis and a host of other pathological conditions in which collagen is implicated, this work has been undertaken in order to establish and charac teri ze any binding mechanisms which may be involved. Furthermore, the corticosteroid drugs available commercially in pure form as the free base or as the water-soluble ester salts offer an interesting range of structural and stereochemical variants for the study of their reaction with a complex and biologically important protein molecule such as collagen. A great deal of research on drug- protein interactions (Goldstein, 1949; Meyer and Guttman, 1968a) and more specifically, steroid-protein interactions have been reported over the years (Daughaday, 1959; Sandberg et al., 1966; Villee and Engel, 1961; Westphal , 1971). Comprehensive reports, however, on steroid-collagen interactions in vitro are conspicuously absent from modern scientific literature although relatively superficial accounts have been published (Menczel and Maibach, 1972; Eik-Nes et al., 1954). Although work involving the above has appeared relating specifically to the effects of steroids on collagen biosynthesis both in vivo and in vitro there have been minimal accounts of steroid-collagen interactions tailored to characterize the binding at the molecular level. The effect of corticosteroids on the metabolism of connective tissue has also received special attention (Asboe-Hansen, 1959; Kivirikko, 1953; Nakagawa and Tsurufuji, 1972). Recently, Uitto et al. (1972) reported the effects of several anti-inflammatory corticosteroids on collagen biosynthesis in vitro, whilst Aalto and Kulonen (1972) reported the effects of several antirheumatic drugs on the synthesis of collagen and other proteins in vitro. The interactions between collagen and certain drugs has also been briefly reviewed (Chvapil, 1967). Much data also exists on the binding of a wide range of small molecules and ions with serum albumin (Steinhardt and Reynolds, 1969; Scatchard, 1949; Klotz, 1950). Serum albumin, being specialized for a very general transport function and apparently designed for the purpose of combining with a large range of small molecules, has a proportion of possible reactive sites 'buried' within the molecule itself because of its folded conformation. In addition, serum albumin shows a high degree of cooperative binding in contrast to collagen. The latter molecule, with its larger molecular size and weight is specialized for a biologically structural function and has a higher proportion of possible reactive sites which appear relatively more accessible to ligands. A study of the interactions between corticosteroids and collagen thus provides the opportunity to investigate a protein which is very different from the much studied serum albumin. Because of the limited information available regarding the interaction of steroid drugs and collagen at the molecular level, studies of this nature are relevant to the understanding of the mode of action of steroid compounds which are such an important group of therapeutic substances used in modern medicine.
- Full Text:
- Date Issued: 1975
J C Chase: 1820 settler and servant of the Colony
- Authors: McGinn, M J
- Date: 1975
- Subjects: Chase, J. C, 1806-1876 , British settlers of 1820 (South Africa) , Cape of Good Hope (South Africa) -- History
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2610 , http://hdl.handle.net/10962/d1012872
- Description: J.C. Chase was an 1820 settler who travelled to the Cape with Bailie's party. He was a man of some standing and education. There is evidence that he was a member of the Worshipful Company of Founders, whose arms were later adopted by Aliwal North, but he was reputedly a bookseller in London in 1819. Clearly the reading and writing of books were among his chief preoccupations at the Cape. He was particularly interested in travel and exploration and was one of the early white visitors to Griqualand. But his main objective at the Cape was probably to seek the security of a government appointment, and he held quite a succession of offices until he secured a permanent post in the administration. Even then he was moved from Graham's Town to Albert before he found his niche at Uitenhage, where he was Civil Commissioner and Resident Magistrate from 1849 to 1863. Intro., p.1.
- Full Text:
- Date Issued: 1975
- Authors: McGinn, M J
- Date: 1975
- Subjects: Chase, J. C, 1806-1876 , British settlers of 1820 (South Africa) , Cape of Good Hope (South Africa) -- History
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2610 , http://hdl.handle.net/10962/d1012872
- Description: J.C. Chase was an 1820 settler who travelled to the Cape with Bailie's party. He was a man of some standing and education. There is evidence that he was a member of the Worshipful Company of Founders, whose arms were later adopted by Aliwal North, but he was reputedly a bookseller in London in 1819. Clearly the reading and writing of books were among his chief preoccupations at the Cape. He was particularly interested in travel and exploration and was one of the early white visitors to Griqualand. But his main objective at the Cape was probably to seek the security of a government appointment, and he held quite a succession of offices until he secured a permanent post in the administration. Even then he was moved from Graham's Town to Albert before he found his niche at Uitenhage, where he was Civil Commissioner and Resident Magistrate from 1849 to 1863. Intro., p.1.
- Full Text:
- Date Issued: 1975
Myth and art : a correlation
- Authors: Matthews, Celeste Deluvia
- Date: 1975
- Subjects: Art and mythology
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2487 , http://hdl.handle.net/10962/d1012844
- Description: The word myth evokes the same response as Lawrence's "snake at the water-trough"; the "voice of my education said it must be killed". We do so by confining it to Classicism or any of the diciplines. Myths in Classical language are Roman or Greek stories of fanciful or bawdy content, with naive or picturesque religious significance. A myth is not a story. There are many who interpret and explain myth. The fantasy doctors are applauded by the fantasy consumers. Intro. p. 1.
- Full Text:
- Date Issued: 1975
- Authors: Matthews, Celeste Deluvia
- Date: 1975
- Subjects: Art and mythology
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2487 , http://hdl.handle.net/10962/d1012844
- Description: The word myth evokes the same response as Lawrence's "snake at the water-trough"; the "voice of my education said it must be killed". We do so by confining it to Classicism or any of the diciplines. Myths in Classical language are Roman or Greek stories of fanciful or bawdy content, with naive or picturesque religious significance. A myth is not a story. There are many who interpret and explain myth. The fantasy doctors are applauded by the fantasy consumers. Intro. p. 1.
- Full Text:
- Date Issued: 1975
Paradoks as poësie: 'n ondersoek na enkele aspekte van die poësie van Breyten Breytenbach
- Authors: Van der Merwe, Anna Maria
- Date: 1975
- Subjects: Breytenbach, Breyten -- Criticism and interpretation
- Language: Afrikaans
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3636 , http://hdl.handle.net/10962/d1013302
- Full Text:
- Date Issued: 1975
- Authors: Van der Merwe, Anna Maria
- Date: 1975
- Subjects: Breytenbach, Breyten -- Criticism and interpretation
- Language: Afrikaans
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3636 , http://hdl.handle.net/10962/d1013302
- Full Text:
- Date Issued: 1975
Plotinus and art
- Authors: Roome, J W
- Date: 1975
- Subjects: Plotinus
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2491 , http://hdl.handle.net/10962/d1013077
- Description: Plotinua was the last great philosopher of Antiquity. He has greatly influenced philosophy, theology, mysticism and art. He became the guiding force of thought in the west. Because of his stress on the autonomy of spirit he is a precursor of modern times. He was the founder of speculative mysticism which deals with states and stages of union with the absolute. Chap. 1, p. 1.
- Full Text:
- Date Issued: 1975
- Authors: Roome, J W
- Date: 1975
- Subjects: Plotinus
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2491 , http://hdl.handle.net/10962/d1013077
- Description: Plotinua was the last great philosopher of Antiquity. He has greatly influenced philosophy, theology, mysticism and art. He became the guiding force of thought in the west. Because of his stress on the autonomy of spirit he is a precursor of modern times. He was the founder of speculative mysticism which deals with states and stages of union with the absolute. Chap. 1, p. 1.
- Full Text:
- Date Issued: 1975
Poetic situation in the poetry of John Crowe Ransom
- Authors: Driver, Dorothy
- Date: 1975
- Subjects: Ransom, John Crowe,1888-1974 -- Criticism and interpretation
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2292 , http://hdl.handle.net/10962/d1011459 , Ransom, John Crowe,1888-1974 -- Criticism and interpretation
- Full Text:
- Date Issued: 1975
- Authors: Driver, Dorothy
- Date: 1975
- Subjects: Ransom, John Crowe,1888-1974 -- Criticism and interpretation
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2292 , http://hdl.handle.net/10962/d1011459 , Ransom, John Crowe,1888-1974 -- Criticism and interpretation
- Full Text:
- Date Issued: 1975
Remarks on formalized arithmetic and subsystems thereof
- Brink, C
- Authors: Brink, C
- Date: 1975
- Subjects: Gödel, Kurt , Logic, Symbolic and mathematical , Semantics (Philosophy) , Arithmetic -- Foundations , Number theory
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5424 , http://hdl.handle.net/10962/d1009752 , Gödel, Kurt , Logic, Symbolic and mathematical , Semantics (Philosophy) , Arithmetic -- Foundations , Number theory
- Description: In a famous paper of 1931, Gödel proved that any formalization of elementary Arithmetic is incomplete, in the sense that it contains statements which are neither provable nor disprovable. Some two years before this, Presburger proved that a mutilated system of Arithmetic, employing only addition but not multiplication, is complete. This essay is partly an exposition of a system such as Presburger's, and partly an attempt to gain insight into the source of the incompleteness of Arithmetic, by linking Presburger's result with Gödel's.
- Full Text:
- Date Issued: 1975
- Authors: Brink, C
- Date: 1975
- Subjects: Gödel, Kurt , Logic, Symbolic and mathematical , Semantics (Philosophy) , Arithmetic -- Foundations , Number theory
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5424 , http://hdl.handle.net/10962/d1009752 , Gödel, Kurt , Logic, Symbolic and mathematical , Semantics (Philosophy) , Arithmetic -- Foundations , Number theory
- Description: In a famous paper of 1931, Gödel proved that any formalization of elementary Arithmetic is incomplete, in the sense that it contains statements which are neither provable nor disprovable. Some two years before this, Presburger proved that a mutilated system of Arithmetic, employing only addition but not multiplication, is complete. This essay is partly an exposition of a system such as Presburger's, and partly an attempt to gain insight into the source of the incompleteness of Arithmetic, by linking Presburger's result with Gödel's.
- Full Text:
- Date Issued: 1975
Rhodeo, Vol. 29, No. 1
- Date: 1975
- Subjects: Grahamstown -- Newspapers , Journalism, Students -- South Africa , Rhodes University -- Activate , Rhodes University -- Students , Student newspapers and periodicals -- South Africa
- Language: English
- Type: Text
- Identifier: vital:14660 , http://hdl.handle.net/10962/d1019532
- Description: Rhodeo is the Independent Student Newspaper of Rhodes University. Located in Grahamstown, Rhodeo was established in 1947, and renamed in 1994 as Activate. During apartheid Rhodeo became an active part of the struggle for freedom of expression as part of the now defunct South African Student Press Union. Currently Activate is committed to informing Rhodes University students, staff and community members about relevant issues, mainly on campus. These issues range from hard news to more creative journalism. While Activate acts as a news source, one of its main objectives it to be accessible as a training ground for student journalists. The newspaper is run entirely by the students and is published twice a term. Activate is a free newspaper which receives an annual grant from the Rhodes University Student Representative Council, however, majority of its revenue is generated through advertising.
- Full Text:
- Date Issued: 1975
- Date: 1975
- Subjects: Grahamstown -- Newspapers , Journalism, Students -- South Africa , Rhodes University -- Activate , Rhodes University -- Students , Student newspapers and periodicals -- South Africa
- Language: English
- Type: Text
- Identifier: vital:14660 , http://hdl.handle.net/10962/d1019532
- Description: Rhodeo is the Independent Student Newspaper of Rhodes University. Located in Grahamstown, Rhodeo was established in 1947, and renamed in 1994 as Activate. During apartheid Rhodeo became an active part of the struggle for freedom of expression as part of the now defunct South African Student Press Union. Currently Activate is committed to informing Rhodes University students, staff and community members about relevant issues, mainly on campus. These issues range from hard news to more creative journalism. While Activate acts as a news source, one of its main objectives it to be accessible as a training ground for student journalists. The newspaper is run entirely by the students and is published twice a term. Activate is a free newspaper which receives an annual grant from the Rhodes University Student Representative Council, however, majority of its revenue is generated through advertising.
- Full Text:
- Date Issued: 1975