Preliminary geochemical data for dolerite dykes and sills of the southern part of the Etendeka Igneous Province
- Marsh, Julian S, Erlank, Anthony J, Duncan, Andrew R
- Authors: Marsh, Julian S , Erlank, Anthony J , Duncan, Andrew R
- Date: 1991
- Language: English
- Type: text , report
- Identifier: http://hdl.handle.net/10962/132133 , vital:36803
- Description: Over the last 15 years systematic geochemical and petrological investigation of the igneous rocks of the Early Cretaceous - Late Jurassic Etendeka Igneous Province of northwestern Namibia have focused on the tholeiitic basaltic lavas and interbedded silicic volcanic rocks and the large central subvolcanic complexes of Brandberg, Erongo, Okenyenya, Messum, Doros and Cape Cross. Previously these rocks were grouped into the Karoo Volcanic Province of South Africa, but in view of the distinct age difference between the igneous rocks of the Etendeka region and Karoo rocks occurring elsewhere in southern Africa , we propose to regard them as constituting a separate Etendeka Igneous Province which exhibits a close lithological, geochemical and temporal correlation with the Parana Flood Basalt Province of South America.
- Full Text:
- Date Issued: 1991
- Authors: Marsh, Julian S , Erlank, Anthony J , Duncan, Andrew R
- Date: 1991
- Language: English
- Type: text , report
- Identifier: http://hdl.handle.net/10962/132133 , vital:36803
- Description: Over the last 15 years systematic geochemical and petrological investigation of the igneous rocks of the Early Cretaceous - Late Jurassic Etendeka Igneous Province of northwestern Namibia have focused on the tholeiitic basaltic lavas and interbedded silicic volcanic rocks and the large central subvolcanic complexes of Brandberg, Erongo, Okenyenya, Messum, Doros and Cape Cross. Previously these rocks were grouped into the Karoo Volcanic Province of South Africa, but in view of the distinct age difference between the igneous rocks of the Etendeka region and Karoo rocks occurring elsewhere in southern Africa , we propose to regard them as constituting a separate Etendeka Igneous Province which exhibits a close lithological, geochemical and temporal correlation with the Parana Flood Basalt Province of South America.
- Full Text:
- Date Issued: 1991
Sinclair Beiles. A South African Abroad. Venice California The Lapis Press, 1991
- Authors: Doherty, Christo
- Date: 1991
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/460565 , vital:75948 , https://journals.co.za/doi/epdf/10.10520/AJA00284459_140
- Description: New Coin is one of South Africa's most established and influential poetry journals. It publishes poetry, and poetry-related reviews, commentary and interviews. New Coin places a particular emphasis on evolving forms and experimental use of the English language in poetry in the South African context. In this sense it has traced the most exciting trends and currents in contemporary poetry in South Africa for a decade of more. The journal is published twice a year in June and December by the Institute for the Study of English in Africa (ISEA), Rhodes University.
- Full Text:
- Date Issued: 1991
- Authors: Doherty, Christo
- Date: 1991
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/460565 , vital:75948 , https://journals.co.za/doi/epdf/10.10520/AJA00284459_140
- Description: New Coin is one of South Africa's most established and influential poetry journals. It publishes poetry, and poetry-related reviews, commentary and interviews. New Coin places a particular emphasis on evolving forms and experimental use of the English language in poetry in the South African context. In this sense it has traced the most exciting trends and currents in contemporary poetry in South Africa for a decade of more. The journal is published twice a year in June and December by the Institute for the Study of English in Africa (ISEA), Rhodes University.
- Full Text:
- Date Issued: 1991
Southern Africa perspective - In South Africa: The Bloody Campaign Against Organized Labor
- COSATU
- Authors: COSATU
- Date: 1991
- Subjects: COSATU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/169033 , vital:41677
- Description: A year after African National Congress leader Nelson Mandela’s release from prison, South Africa’s Black trade unions, particularly the million-member Congress of South African Trade Unions (COSATU), remain at the heart of the movement for political democracy and economic and social change. Union activists have been instrumental in revitalizing mass opposition to apartheid — launching ANC branches, organizing local consumer and utility boycotts, and leading strikes over wages, job security and workplace racism that cost the white-run economy over four million work days during 1990. But labor’s role in the struggle for political and economic democracy has increasingly made the unions the target of state-sponsored political violence. Black labor’s resistance to oppression goes back to the 1920s, when the militant Industrial and Commercial Workers Union built a national membership of over 100,000. But it was not until 1981, after a wave of illegal strikes forced the apartheid regime to lift the ban on Black unions, that labor began to emerge as a major anti-apartheid force. With Mandela’s African National Congress and other organizations still outlawed, Black workers increasingly saw their unions as a vehicle for their political aspirations.
- Full Text:
- Date Issued: 1991
- Authors: COSATU
- Date: 1991
- Subjects: COSATU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/169033 , vital:41677
- Description: A year after African National Congress leader Nelson Mandela’s release from prison, South Africa’s Black trade unions, particularly the million-member Congress of South African Trade Unions (COSATU), remain at the heart of the movement for political democracy and economic and social change. Union activists have been instrumental in revitalizing mass opposition to apartheid — launching ANC branches, organizing local consumer and utility boycotts, and leading strikes over wages, job security and workplace racism that cost the white-run economy over four million work days during 1990. But labor’s role in the struggle for political and economic democracy has increasingly made the unions the target of state-sponsored political violence. Black labor’s resistance to oppression goes back to the 1920s, when the militant Industrial and Commercial Workers Union built a national membership of over 100,000. But it was not until 1981, after a wave of illegal strikes forced the apartheid regime to lift the ban on Black unions, that labor began to emerge as a major anti-apartheid force. With Mandela’s African National Congress and other organizations still outlawed, Black workers increasingly saw their unions as a vehicle for their political aspirations.
- Full Text:
- Date Issued: 1991
A preliminary report on the age and significance of Quaternary lacustrine deposits at Birnam, north-east Cape Province, South Africa
- Hanvey, Patricia M, Lewis, Colin A
- Authors: Hanvey, Patricia M , Lewis, Colin A
- Date: 1990
- Language: English
- Type: Article
- Identifier: vital:6686 , http://hdl.handle.net/10962/d1006688
- Description: The paper presents the results of preliminary investigations at Birnam, in the Rhodes area of the eastern Cape Drakensberg, which may have important implications for palaeoenvironmental reconstructions in Southern Africa. A study has been undertaken on a sedimentary sequence exposed by fluvial incision on the outer bend of the River Bokspruit, at an altitude of 1850 m.
- Full Text: false
- Date Issued: 1990
- Authors: Hanvey, Patricia M , Lewis, Colin A
- Date: 1990
- Language: English
- Type: Article
- Identifier: vital:6686 , http://hdl.handle.net/10962/d1006688
- Description: The paper presents the results of preliminary investigations at Birnam, in the Rhodes area of the eastern Cape Drakensberg, which may have important implications for palaeoenvironmental reconstructions in Southern Africa. A study has been undertaken on a sedimentary sequence exposed by fluvial incision on the outer bend of the River Bokspruit, at an altitude of 1850 m.
- Full Text: false
- Date Issued: 1990
Living wage structures, demands and strategies for 1990
- SACCAWU
- Authors: SACCAWU
- Date: Feb 1990
- Subjects: SACCAWU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/117943 , vital:34576
- Description: The living wage campaign falls under the jurisdiction of the SACCAWU organising and collective bargaining unit. The unit is divided into two sectors, commercial and catering, with co-ordinators for both sectors at national and branch level. The national and branch co-ordinators are responsible for implementing the living wage campaign. Quarterly meetings of all organising and collective bargaining unit co-ordinators are scheduled to be held to monitor and evaluate progress. A national workshop of all negotiators and delegates from the union's negotiating committees was held in January. This workshop carried out planning and formulated strategies on various aspects related to living wage activities and campaigns for this year. Another national workshop is scheduled to be held in November.
- Full Text:
- Date Issued: Feb 1990
- Authors: SACCAWU
- Date: Feb 1990
- Subjects: SACCAWU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/117943 , vital:34576
- Description: The living wage campaign falls under the jurisdiction of the SACCAWU organising and collective bargaining unit. The unit is divided into two sectors, commercial and catering, with co-ordinators for both sectors at national and branch level. The national and branch co-ordinators are responsible for implementing the living wage campaign. Quarterly meetings of all organising and collective bargaining unit co-ordinators are scheduled to be held to monitor and evaluate progress. A national workshop of all negotiators and delegates from the union's negotiating committees was held in January. This workshop carried out planning and formulated strategies on various aspects related to living wage activities and campaigns for this year. Another national workshop is scheduled to be held in November.
- Full Text:
- Date Issued: Feb 1990
Parliament for the people: take part in parliament
- Public Participation Unit of Parliament
- Authors: Public Participation Unit of Parliament
- Date: 199-?
- Subjects: Parliamentary practice -- South Africa , South Africa -- Politics and government , Democracy -- South Africa
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/76082 , vital:30501
- Description: Our Constitution says that South Africa must have an independent body, called Parliament, to make the laws of the country. Parliament is made up of our political representatives who are called Members of Parliament (MPs). We choose the MPs by voting in elections. Parliament has two main parts, called the Houses of Parliament. They are the National Assembly (NA) and the National Council of Provinces (NCOP). The MPs discuss and debate the new laws and make changes to existing laws. Parliament also has many committees where they discuss the laws in detail. Members of Parliament also make sure that the government departments do their work properly. , Funded by the European Union
- Full Text:
- Date Issued: 199-?
- Authors: Public Participation Unit of Parliament
- Date: 199-?
- Subjects: Parliamentary practice -- South Africa , South Africa -- Politics and government , Democracy -- South Africa
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/76082 , vital:30501
- Description: Our Constitution says that South Africa must have an independent body, called Parliament, to make the laws of the country. Parliament is made up of our political representatives who are called Members of Parliament (MPs). We choose the MPs by voting in elections. Parliament has two main parts, called the Houses of Parliament. They are the National Assembly (NA) and the National Council of Provinces (NCOP). The MPs discuss and debate the new laws and make changes to existing laws. Parliament also has many committees where they discuss the laws in detail. Members of Parliament also make sure that the government departments do their work properly. , Funded by the European Union
- Full Text:
- Date Issued: 199-?
Negotiations - The Road to Betrayal!!
- Date: 1989-10
- Subjects: Government, Resistance to -- South Africa , South Africa -- History -- 20th century , South Africa -- Politics and government
- Language: English
- Type: text , Article
- Identifier: http://hdl.handle.net/10948/34008 , vital:33175 , Bulk File 7
- Description: This is one of many individual publications put out by the New Unity Movement.
- Full Text: false
- Date Issued: 1989-10
- Date: 1989-10
- Subjects: Government, Resistance to -- South Africa , South Africa -- History -- 20th century , South Africa -- Politics and government
- Language: English
- Type: text , Article
- Identifier: http://hdl.handle.net/10948/34008 , vital:33175 , Bulk File 7
- Description: This is one of many individual publications put out by the New Unity Movement.
- Full Text: false
- Date Issued: 1989-10
Accounting Technicians Bursary Programme
- Association of Black Accountants of Southern Africa (ABASA)
- Authors: Association of Black Accountants of Southern Africa (ABASA)
- Date: Dec 1989
- Subjects: Association of Black Accountants of Southern Africa (ABASA)
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/112995 , vital:33684
- Description: ABASA has pleasure in announcing the establishment of a new scholarship Programme for Accounting Technicians. The objective of the Accounting Technician Bursary Programme is to encourage black High School graduates throughout South Africa to become Accounting Technicians. There are about 60 Black Accounting Technicians out of approximately 3 500. An Accounting Techinicain is a member of the Institute of Accounting Technicians of Southern Africa. To qualify for membership of the Institute, a person must first complete a three year National Diploma Accounting at a Technikon and also work under the supervision of a qualified Accountant for 3 years. Members of the Institute are qualified for appointment as accounting officers to close corporations.
- Full Text:
- Date Issued: Dec 1989
- Authors: Association of Black Accountants of Southern Africa (ABASA)
- Date: Dec 1989
- Subjects: Association of Black Accountants of Southern Africa (ABASA)
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/112995 , vital:33684
- Description: ABASA has pleasure in announcing the establishment of a new scholarship Programme for Accounting Technicians. The objective of the Accounting Technician Bursary Programme is to encourage black High School graduates throughout South Africa to become Accounting Technicians. There are about 60 Black Accounting Technicians out of approximately 3 500. An Accounting Techinicain is a member of the Institute of Accounting Technicians of Southern Africa. To qualify for membership of the Institute, a person must first complete a three year National Diploma Accounting at a Technikon and also work under the supervision of a qualified Accountant for 3 years. Members of the Institute are qualified for appointment as accounting officers to close corporations.
- Full Text:
- Date Issued: Dec 1989
Tying up the continents
- Authors: Marsh, Julian S
- Date: 1989
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/143282 , vital:38220
- Full Text:
- Date Issued: 1989
- Authors: Marsh, Julian S
- Date: 1989
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/143282 , vital:38220
- Full Text:
- Date Issued: 1989
Rhodes University Graduation luncheon speech, 11 April 1987 (draft)
- Authors: Henderson, Derek Scott
- Date: 1987
- Subjects: Smith, Margaret Mary
- Language: English
- Type: text
- Identifier: vital:7558 , http://hdl.handle.net/10962/d1018435
- Description: Rhodes University Graduation luncheon speech, 11 April 1987. Honorary Graduate toast to Margaret Smith.
- Full Text:
- Date Issued: 1987
- Authors: Henderson, Derek Scott
- Date: 1987
- Subjects: Smith, Margaret Mary
- Language: English
- Type: text
- Identifier: vital:7558 , http://hdl.handle.net/10962/d1018435
- Description: Rhodes University Graduation luncheon speech, 11 April 1987. Honorary Graduate toast to Margaret Smith.
- Full Text:
- Date Issued: 1987
Vice Chancellor's Graduation luncheon speech, 1987
- Authors: Henderson, Derek Scott
- Date: 1987
- Subjects: Smith, Margaret Mary
- Language: English
- Type: text
- Identifier: vital:7557 , http://hdl.handle.net/10962/d1018434
- Description: Honorary Graduate toast to Margaret Smith.
- Full Text:
- Date Issued: 1987
- Authors: Henderson, Derek Scott
- Date: 1987
- Subjects: Smith, Margaret Mary
- Language: English
- Type: text
- Identifier: vital:7557 , http://hdl.handle.net/10962/d1018434
- Description: Honorary Graduate toast to Margaret Smith.
- Full Text:
- Date Issued: 1987
Determination of erythromycin in serum and urine by high performance liquid chromatography with ultraviolet detection
- Stubbs, Christopher, Haigh, John M, Kanfer, Isadore
- Authors: Stubbs, Christopher , Haigh, John M , Kanfer, Isadore
- Date: 1985
- Language: English
- Type: text , Article
- Identifier: vital:6428 , http://hdl.handle.net/10962/d1006576
- Description: A high-performance liquid chromatographic analysis of erythromycin in human serum and urine with UV detection at 200 nm is presented. The method involves a solid-phase extraction procedure followed by a simple phase separation step and chromatography on a reversed-phase column. The method has sensitivity limits of 0.25 and 1.0 g/mL in serum and urine, respectively, and is sufficiently sensitive to monitor concentrations of erythromycin in human serum and urine after the administration of a single 500-mg erythromycin stearate tablet.
- Full Text:
- Date Issued: 1985
- Authors: Stubbs, Christopher , Haigh, John M , Kanfer, Isadore
- Date: 1985
- Language: English
- Type: text , Article
- Identifier: vital:6428 , http://hdl.handle.net/10962/d1006576
- Description: A high-performance liquid chromatographic analysis of erythromycin in human serum and urine with UV detection at 200 nm is presented. The method involves a solid-phase extraction procedure followed by a simple phase separation step and chromatography on a reversed-phase column. The method has sensitivity limits of 0.25 and 1.0 g/mL in serum and urine, respectively, and is sufficiently sensitive to monitor concentrations of erythromycin in human serum and urine after the administration of a single 500-mg erythromycin stearate tablet.
- Full Text:
- Date Issued: 1985
The arrangement and structure of feather melanin granules as a taxonomic character in African starlings (Sturnidae)
- Craig, Adrian J F K, Hartley, Alex H
- Authors: Craig, Adrian J F K , Hartley, Alex H
- Date: 1985
- Subjects: To be catalogued
- Language: English
- Type: article
- Identifier: http://hdl.handle.net/10962/465507 , vital:76615 , https://www.jstor.org/stable/4086659
- Description: Electron micrographs of transverse sections of starling feathers, show-ing different structural types:(a) type A, Creatophora cinerea;(b) type B, Poeoptera kenricki;(c) type B, Lamprotornis purpureiceps;(d) type C, Spreo fischeri. nus Hylopsar, and are grouped as a superspecies by Hall and Moreau (1970). Here similar colors apparently are produced by a very different underlying structure. While these species share type B with the genus Poeoptera, there are differences in the details of the melanin granule arrangement, as well as other morphological differences.
- Full Text:
- Date Issued: 1985
- Authors: Craig, Adrian J F K , Hartley, Alex H
- Date: 1985
- Subjects: To be catalogued
- Language: English
- Type: article
- Identifier: http://hdl.handle.net/10962/465507 , vital:76615 , https://www.jstor.org/stable/4086659
- Description: Electron micrographs of transverse sections of starling feathers, show-ing different structural types:(a) type A, Creatophora cinerea;(b) type B, Poeoptera kenricki;(c) type B, Lamprotornis purpureiceps;(d) type C, Spreo fischeri. nus Hylopsar, and are grouped as a superspecies by Hall and Moreau (1970). Here similar colors apparently are produced by a very different underlying structure. While these species share type B with the genus Poeoptera, there are differences in the details of the melanin granule arrangement, as well as other morphological differences.
- Full Text:
- Date Issued: 1985
The winter diet of gentoo penguins at Marion Island
- LaCock, G D, Hecht, Thomas, Klages, N
- Authors: LaCock, G D , Hecht, Thomas , Klages, N
- Date: 1984
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/448453 , vital:74731 , https://doi.org/10.1080/00306525.1984.9634486
- Description: The diet of Gentoo Penguins Pygoscelis papua at Marion Island was studied during September 1982. Samples were obtained from 64 birds using a stomach-pump. Fish accounted for 70% of the diet by wet weight, and crustaceans 30%. Fishes occurred in 72% of the samples, crustaceans in 75%, cephalopods in 13%, and molluscs in 8%. Cephalopods and molluscs did not form a significant proportion of any single sample. Harpagifer georgianus was the predominant fish in the diet (92,7% of otoliths recovered), and Nauticaris marionis was the only crustacean.
- Full Text:
- Date Issued: 1984
- Authors: LaCock, G D , Hecht, Thomas , Klages, N
- Date: 1984
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/448453 , vital:74731 , https://doi.org/10.1080/00306525.1984.9634486
- Description: The diet of Gentoo Penguins Pygoscelis papua at Marion Island was studied during September 1982. Samples were obtained from 64 birds using a stomach-pump. Fish accounted for 70% of the diet by wet weight, and crustaceans 30%. Fishes occurred in 72% of the samples, crustaceans in 75%, cephalopods in 13%, and molluscs in 8%. Cephalopods and molluscs did not form a significant proportion of any single sample. Harpagifer georgianus was the predominant fish in the diet (92,7% of otoliths recovered), and Nauticaris marionis was the only crustacean.
- Full Text:
- Date Issued: 1984
Comparative bioavailability of some locally manufactured betamethasone valerate containing preparations
- Meyer, Eric, Haigh, John M, Kanfer, Isadore
- Authors: Meyer, Eric , Haigh, John M , Kanfer, Isadore
- Date: 1983
- Language: English
- Type: Article
- Identifier: vital:6399 , http://hdl.handle.net/10962/d1006326
- Description: The bioavailabilities of three locally manufactured proprietary betamethasone- 17-valerate containing creams and ointments were compared by measuring their abilities to cause blanching of human skin after topical application. The preparations studied were Betnovate Cream and Ointment, Celestoderm-V Cream and Ointment and Persivate Cream and Ointment. Celestoderm-V cream displayed a significantly superior blanching activity over both Betnovate and Persivate creams in' the occluded mode, whereas Persivate cream displayed a significantly superior blanching activity over both Betnovate and Celestoderm-V creams in the unoccluded mode. Persivate ointment was found to produce a significantly superior blanching activity over Betnovate and Celestoderm-V ointments in both the occluded and unoccluded modes of application.
- Full Text:
- Date Issued: 1983
- Authors: Meyer, Eric , Haigh, John M , Kanfer, Isadore
- Date: 1983
- Language: English
- Type: Article
- Identifier: vital:6399 , http://hdl.handle.net/10962/d1006326
- Description: The bioavailabilities of three locally manufactured proprietary betamethasone- 17-valerate containing creams and ointments were compared by measuring their abilities to cause blanching of human skin after topical application. The preparations studied were Betnovate Cream and Ointment, Celestoderm-V Cream and Ointment and Persivate Cream and Ointment. Celestoderm-V cream displayed a significantly superior blanching activity over both Betnovate and Persivate creams in' the occluded mode, whereas Persivate cream displayed a significantly superior blanching activity over both Betnovate and Celestoderm-V creams in the unoccluded mode. Persivate ointment was found to produce a significantly superior blanching activity over Betnovate and Celestoderm-V ointments in both the occluded and unoccluded modes of application.
- Full Text:
- Date Issued: 1983
Determination of phenylpropanolamine in serum and urine by high performance liquid chromatography
- Dowse, Roslind, Haigh, John M, Kanfer, Isadore
- Authors: Dowse, Roslind , Haigh, John M , Kanfer, Isadore
- Date: 1983
- Language: English
- Type: Article
- Identifier: vital:6361 , http://hdl.handle.net/10962/d1006056
- Description: A high-performance liquid chromatographic analysis of phenylpropanolamine in human serum and urine without prior derivatization is presented. Using direct UV detection the method is sufficiently sensitive to detect 25 ng of drug/ml of serum or urine; the coefficients of variation at 25 ng/ml and 500 ng/ml were 5.16 and 2.12, respectively, in serum. The method involves serum and urine extraction at a basic pH with chloroform, a single back-extraction, and chromatography on a reverse-phase column. Serum and urine data following administration of a single 150-mg sustained-release tablet of phenylpropanolamine hydrochloride in 6 healthy volunteers demonstrates the suitability of the analytical method.
- Full Text:
- Date Issued: 1983
- Authors: Dowse, Roslind , Haigh, John M , Kanfer, Isadore
- Date: 1983
- Language: English
- Type: Article
- Identifier: vital:6361 , http://hdl.handle.net/10962/d1006056
- Description: A high-performance liquid chromatographic analysis of phenylpropanolamine in human serum and urine without prior derivatization is presented. Using direct UV detection the method is sufficiently sensitive to detect 25 ng of drug/ml of serum or urine; the coefficients of variation at 25 ng/ml and 500 ng/ml were 5.16 and 2.12, respectively, in serum. The method involves serum and urine extraction at a basic pH with chloroform, a single back-extraction, and chromatography on a reverse-phase column. Serum and urine data following administration of a single 150-mg sustained-release tablet of phenylpropanolamine hydrochloride in 6 healthy volunteers demonstrates the suitability of the analytical method.
- Full Text:
- Date Issued: 1983
Significance of 87Sr/86Sr ratios in the Merensky cyclic unit of the Bushveld Complex
- Kruger, Floris J, Marsh, Julian S
- Authors: Kruger, Floris J , Marsh, Julian S
- Date: 1982
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/133524 , vital:36986 , https://doi.org/10.1038/298053a0
- Description: In a number of mafic layered intrusions, layers with platinum group element (PGE) mineralization coincide with breaks in cumulus mineral composition and isotopic variation trends through the layered sequence1,2. For example, in the Bushveld Complex in South Africa, abrupt increases in initial 87Sr/86Sr ratios occur at the UG-2 and Merensky pegmatoid (or ‘reef’) horizons, both of which are exploited for PGEs. We report here the results of a detailed Sr-isotope study across the Merensky unit and its immediate foot- and hangingwall-rocks which, when considered together with new ideas on processes operating in magma chambers3–5, suggest that magma mixing and post-cumulus infiltration of liquids displaced from below were important during crystallization of the Merensky pegmatoid.
- Full Text: false
- Date Issued: 1982
- Authors: Kruger, Floris J , Marsh, Julian S
- Date: 1982
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/133524 , vital:36986 , https://doi.org/10.1038/298053a0
- Description: In a number of mafic layered intrusions, layers with platinum group element (PGE) mineralization coincide with breaks in cumulus mineral composition and isotopic variation trends through the layered sequence1,2. For example, in the Bushveld Complex in South Africa, abrupt increases in initial 87Sr/86Sr ratios occur at the UG-2 and Merensky pegmatoid (or ‘reef’) horizons, both of which are exploited for PGEs. We report here the results of a detailed Sr-isotope study across the Merensky unit and its immediate foot- and hangingwall-rocks which, when considered together with new ideas on processes operating in magma chambers3–5, suggest that magma mixing and post-cumulus infiltration of liquids displaced from below were important during crystallization of the Merensky pegmatoid.
- Full Text: false
- Date Issued: 1982
Message to be broadcast over the SABC by the Vice-Chancellor on plans and prospects for Rhodes University in 1981
- Authors: Henderson, Derek Scott
- Date: 1981
- Language: English
- Type: text
- Identifier: vital:7444 , http://hdl.handle.net/10962/d1018321
- Description: The year 1980 has been a good one for Rhodes University, both academically and financially. In the academic sphere, the University launched the M.Sc degree course in Limnology and there have been extensions to the courses offered in African History and in English in Africa. The major development, however, has been the establishment of two new chairs - one in Electronics and the other in English-Second- Language, endowed respectively by Federale Electronics and the Molteno Brothers' Trust.
- Full Text:
- Date Issued: 1981
- Authors: Henderson, Derek Scott
- Date: 1981
- Language: English
- Type: text
- Identifier: vital:7444 , http://hdl.handle.net/10962/d1018321
- Description: The year 1980 has been a good one for Rhodes University, both academically and financially. In the academic sphere, the University launched the M.Sc degree course in Limnology and there have been extensions to the courses offered in African History and in English in Africa. The major development, however, has been the establishment of two new chairs - one in Electronics and the other in English-Second- Language, endowed respectively by Federale Electronics and the Molteno Brothers' Trust.
- Full Text:
- Date Issued: 1981
Résultats des études menées en Angleterre: détermination de la posologie optimale
- Woodford, R, Haigh, John M, Barry, B W
- Authors: Woodford, R , Haigh, John M , Barry, B W
- Date: 1981
- Language: French
- Type: Article
- Identifier: vital:6449 , http://hdl.handle.net/10962/d1006636
- Description: Les auteurs ont etudie la biodisponibilite et I'activite de formules experimentales et commercialisees de dermocortico'ides en utilisant les essais de vasoconstriction avec et sans occlusion (1, 2, 6, 7, 8, 9). L'application unique de six heures avec lectures multiples a ete largement utilisee dans ce travail et la methodologie en a ete decrite en detail ailleurs (4). Sur la base de ce travail. on a pratique des applications repetees de dermocortico'ides commercialises au Royaume- Uni. en utilisant Ie test du blanchiment de la peau sans occlusion, de maniere a reproduire au plus pres la situation realisee en clinique (3). Ce travail a montre que I'application de cortico'ides trois fois par jour pendant cinq jours aboutissait a une tachyphylaxie considerable de la reponse du blanchiment quelque soit I'activite therapeutique de la formule utilisee. Au bout de deux jours de repos, on a assiste a une recuperation considerable, mais a nouveau une tachyphylaxie aigue s'est installee a la suite d'une nouvelle application triquotidienne.
- Full Text:
- Date Issued: 1981
- Authors: Woodford, R , Haigh, John M , Barry, B W
- Date: 1981
- Language: French
- Type: Article
- Identifier: vital:6449 , http://hdl.handle.net/10962/d1006636
- Description: Les auteurs ont etudie la biodisponibilite et I'activite de formules experimentales et commercialisees de dermocortico'ides en utilisant les essais de vasoconstriction avec et sans occlusion (1, 2, 6, 7, 8, 9). L'application unique de six heures avec lectures multiples a ete largement utilisee dans ce travail et la methodologie en a ete decrite en detail ailleurs (4). Sur la base de ce travail. on a pratique des applications repetees de dermocortico'ides commercialises au Royaume- Uni. en utilisant Ie test du blanchiment de la peau sans occlusion, de maniere a reproduire au plus pres la situation realisee en clinique (3). Ce travail a montre que I'application de cortico'ides trois fois par jour pendant cinq jours aboutissait a une tachyphylaxie considerable de la reponse du blanchiment quelque soit I'activite therapeutique de la formule utilisee. Au bout de deux jours de repos, on a assiste a une recuperation considerable, mais a nouveau une tachyphylaxie aigue s'est installee a la suite d'une nouvelle application triquotidienne.
- Full Text:
- Date Issued: 1981
Toast to honorary graduates : luncheon
- Authors: Henderson, Derek Scott
- Date: 1981
- Language: English
- Type: text
- Identifier: vital:7429 , http://hdl.handle.net/10962/d1018306
- Description: Rhodes University's Vice Chancellor toast to honorary graduates : luncheon 1981
- Full Text:
- Date Issued: 1981
- Authors: Henderson, Derek Scott
- Date: 1981
- Language: English
- Type: text
- Identifier: vital:7429 , http://hdl.handle.net/10962/d1018306
- Description: Rhodes University's Vice Chancellor toast to honorary graduates : luncheon 1981
- Full Text:
- Date Issued: 1981