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A stability-indicating HPLC assay with on-line clean-up for betamethasone 17-valerate in topical dosage forms

- Smith, Eric W, Haigh, John M, Kanfer, Isadore

Authors: Smith, Eric W , Haigh, John M , Kanfer, Isadore
Date: 1985
Language: English
Type: Article
Identifier: vital:6421 , http://hdl.handle.net/10962/d1006556
Description: A stability-indicating high-performance liquid chromatographic method with on-line clean-up has been developed for the analysis of betamethasone 17-valerate in topical dosage forms. A short pre-column containing 10 μm octadecylsilane mounted into the sample loop position of an injection valve was used as the primary clean-up step. The utilization of a diode-array UV detector allowed the quantitative analysis of betamethasone 17-valerate together with its degradation product, betamethasone 21-valerate, as well as the qualitative analysis of these compounds, relevant internal standards and the preservatives chlorocresol and methyl hydroxybenzoate contained in the cream and lotion formulations, respectively. Typically, cream and lotion dosage forms were dissolved in acetonitrile and ointments in tetrahydrofuran, internal standards added and aliquots injected onto the analytical system. Dosage form excipients were retained on the loop column and back-flushed to waste with the aid of a second solvent pump while components of interest were allowed to transfer to the analytical column for quantitative analysis. The method is accurate, precise and stability indicating and permits the rapid on-line analysis of betamethasone 17-valerate from complex topical formulation matrices without prior extractions.
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Date Issued: 1985

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The distribution of the Pied Starling, and southern African biogeography

- Craig, Adrian J F K

Authors: Craig, Adrian J F K
Date: 1985
Subjects: To be catalogued
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/447882 , vital:74681 , https://doi.org/10.1080/00306525.1985.9639580
Description: The Pied Starling is restricted to South Africa, Lesotho and Swaziland, but within this region it occupies a variety of habitats. Its modern distribution is certainly influenced by its association with man. However, a comparison with other vertebrate species, and with patterns of plant distribution, suggests that its geographical distribution has been determined primarily by its evolutionary history. A hypothesis for the origin of this species leads to several predictions concerning biogeography in southern Africa.
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Date Issued: 1985

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Workers News - Special Issue

- Cape Town Municipal Workers Association

Authors: Cape Town Municipal Workers Association
Date: Jan 1985
Subjects: Cape Town Municipal Workers Association
Language: English
Type: text
Identifier: http://hdl.handle.net/10962/135520 , vital:37273
Description: Members have shown tremendous interest in the Industrial Court Hearing relating to the Wage Dispute with the City Council. In addition to personal enquiries, we have received hundreds of telephone calls asking for progress reports. The calls are still coming in. It is in response to this clamour for information, as well as the Union’s commitment to keep members informed, that it was decided to bring out this SPECIAL ISSUE of WORKER NEWS. We hope that members will now be better informed on the latest developments.
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Date Issued: Jan 1985

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A new species of the triggerfish genus Xenobalistes matsuura (Tetradontiformes: Balistidae) from South Africa

- Heemstra, Phillip C, Smith, Margaret Mary, J.L.B. Smith Institute of Ichthyology

Authors: Heemstra, Phillip C , Smith, Margaret Mary , J.L.B. Smith Institute of Ichthyology
Date: 1983-01
Subjects: Fishes -- South Africa , Fishes -- Classification , Balistidae -- South Africa
Language: English
Type: text , book
Identifier: http://hdl.handle.net/10962/69968 , vital:29603 , 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. 26 , Xenobalistes punctatus, the second species of the peculiar balistid genus Xenobalistes, is described from one specimen found on the beach at the mouth of the Van Stadens River, eastern Cape Province, South Africa. X. punctatus differs significantly from X. tumidipectoris Matsuura, 1981 in the number of body scale rows and spination of the anterolateral surface of the first dorsal-fin spine. The head and body of X. punctatus are dark brown, covered with numerous, small, evenly-spaced, silvery/white spots.
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Date Issued: 1983-01

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Distribution of Ca in highly fractionated peralkaline magmas

- Marsh, Julian S

Authors: Marsh, Julian S
Date: 1976
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/132974 , vital:36914 , https://doi.org/10.1016/0012-821X(76)90106-0
Description: Many peralkaline rhyolites and granites contain less than 0.15 wt.% CaO. In contrast, strongly fractionated peralkaline nepheline syenites and phonolites usually contain greater than 0.5 wt.% CaO. Consideration of known distributions of Ca between crystals and liquid in conjunction with crystal fractionation does not provide an adequate explanation of the contrasting levels of Ca depletion observed. Examination of the suites of late-crystallizing accessory phases in peralkaline rocks suggests that Ca is more soluble in undersaturated magmas than in over-saturated magmas. Activities for CaO in silicic and phonolitic rocks are calculated and the latter have higher CaO activities than the former and this may manifest itself in the different suites of accessory phases and levels of Ca depletion noted in natural rocks.
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Date Issued: 1976

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The fish Elops machnata in South Africa

- Fraser, Thomas H, Rhodes University. J.L.B. Smith Institute of Ichthyology

Authors: Fraser, Thomas H , Rhodes University. J.L.B. Smith Institute of Ichthyology
Date: 1973-08
Subjects: Elopidae -- South Africa , Elops -- Indian Ocean , Fishes -- South Africa
Language: English
Type: text , book
Identifier: http://hdl.handle.net/10962/69652 , vital:29563 , 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. 11 , Introduction: The status of the species of Elops present in the Indian Ocean along the southern part of Africa has been uncertain in recent times. Two names have been applied - Elops saurus Linnaeus, 1766 and Elops machnata (Forsskål, 1775) by numerous workers up to the present despite three revisions of Elops concluding that only one species, E. machnata, occurs in the western Indian Ocean (Regan, 1909; Bertin, 1944; Whitehead, 1962). These workers also demonstrated that Elops saurus is fotmd only in the western Atlantic Ocean and can be separated 100% of the time from E. machnata by vertebral counts (73-82 in E. saurus and 60-66 in E. machnata). Why, then, have workers persisted in using both names but not exclusively one or the other? There appear to be two reasons: 1. Some workers regard Elops to consist of one world-wide tropical species (in which case E. saurus is the oldest valid name). 2. The inadequate material upon which Regan, Bertin and Whitehead based their conclusions about the species of Elops. The first idea does not appear to be tenable with the evidence presented in the three species revisions and I regard it as erroneous. The second reason is real. We lack the basic information on geographic variation, if any, for the Indian Ocean population. Regan (1909) examined two specimens, Bertin (1944) an unknown number and Whitehead (1962) seven specimens. Whitehead (1965:231) indicates some doubt about the South African population and its status relative to the West African species E. senegalensis Regan, 1909. Furthermore, both Whitehead (1965) and Losse (1968) suggest that E. machnata and E. hawaiensis Regan, 1909 possibly may be subspecies of the same species, but indicate present data to be inadequate. This paper documents meristic and morphometric variation of 39 Elops mostly taken in South African estuaries as a first step toward understanding variation of the southern-most population in the Indian Ocean. South of Durban, South Africa, Elops machnata frequents the coastal waters only during the warmer months and is known to reach Mossel Bay. No species of Elops has been reported along the colder south western coast of southern Africa. The size range examined is large, 30 mm-900 mm SL (or to 6,9 kg), but does not include the maximum recorded size in South Africa of 13,7 kg. Losse's (1968) data for central East Africa are of nearly comparable size range and provide a useful comparison.
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Date Issued: 1973-08

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Dream of a buffer strip

- Butler, Guy F

Authors: Butler, Guy F
Date: 1972
Subjects: To be catalogued
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/458803 , vital:75772 , https://journals.co.za/doi/epdf/10.10520/AJA00284459_303
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.
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Date Issued: 1972

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Eggs and early larvae of the congrid eel Gnathophis capensis off Southern Africa

- Castle, P H J (Peter Henry John), Rhodes University. J.L.B. Smith Institute of Ichthyology

Authors: Castle, P H J (Peter Henry John) , Rhodes University. J.L.B. Smith Institute of Ichthyology
Date: 1969-03
Subjects: Eels , Fishes -- Larvae , Gnathophis capensis
Language: English
Type: text , book
Identifier: http://hdl.handle.net/10962/69563 , vital:29549 , 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. 5 , Two hauls made in late January, 1930 off southern Africa by the Danish Dana Expedition contained developing eggs and very young larvae of the congrid eel Gnathophis capensis (Kaup, 1856). Collection of these specimens confirms the suggestion made from previous larval studies that spawning, development, and at least early larval growth of this species occurs in late summer in this area.
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Date Issued: 1969-03

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Rhodeo, Vol. 21, No. 9

Date: 1967-05-18
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:14563 , http://hdl.handle.net/10962/d1019435
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.
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Date Issued: 1967-05-18

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The new townsmen: the legal position of the African in the white areas today

- Wollheim, O D

Authors: Wollheim, O D
Date: 1964
Subjects: South Africa. Bantu Labour Act, No. 67 of 1964 , Segregation -- Law and legislation -- South Africa , Civil rights -- South Africa , Apartheid -- South Africa , South Africa -- Race relations -- 20th century , South Africa -- Social conditions -- 1961-1994 , Human rights -- South Africa -- History -- 20th century
Type: Text
Identifier: http://hdl.handle.net/10962/61241 , vital:27996 , Pamhlet Box 267 , This manuscript is held at the Cory Library for Humanities Research at Rhodes University. For further information contact cory@ru.ac.za. The digitisation of this image was made possible through a generous grant received from the Andrew W. Mellon Foundation 2014-2017.
Description: This study of urban African legislation is prompted by the widespread public interest in the controversial Bantu Laws Amendment Acts — now in force as the Bantu Labour Act, No. 67 of 1964. It will seek to give a picture of the purpose and effect of this legislation.
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Date Issued: 1964

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A Review of Arterial Stiffness and HIV Infection in Adult Africans

- Awotedu, Kofoworola Olajire, Iputo, Jehu

Authors: Awotedu, Kofoworola Olajire , Iputo, Jehu
Date: 09-06-2016
Language: English
Type: text , article
Identifier: http://hdl.handle.net/11260/3484 , vital:43615 , https://www.hilarispublisher.com/open-access/a-review-of-arterial-stiffness-and-hiv-infection-in-adult-africans-2167-1095-1000221.pdf
Description: Aim: To review the impact of the human immunodeficiency virus and antiretroviral therapy on the vasculature. Objectives: This review seeks to identify the burden which the human immunodeficiency virus and antiretroviral therapy have on the vasculature. Method: Medline/PubMed and Google scholar were searched. There were over 100 publications reviewed. Some people who worked in similar fields were also contacted. The present review summarized current understanding of Human immunodeficiency virus, antiretroviral therapy and effect on the vasculature such as arterial stiffness. Atherosclerosis, endothelial dysfunction, the strengths and weaknesses of current testing strategies, and their potential applications in clinical research and patient care. The association of inflammatory biomarkers, blood pressure and ageing with arterial stiffness were also reviewed. Conclusion: Available literature shows that HIV and antiretroviral agents have a great impact on the vasculature and its progression.
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Date Issued: 09-06-2016

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Education Methods - Role playing

- TUC Education

Authors: TUC Education
Subjects: TUC Education
Language: English
Type: text
Identifier: http://hdl.handle.net/10962/118311 , vital:34616
Description: This note is a practical guide to what role playing is and how to do it on trade union courses. 'Role playing' is not just a method of education: it is something you do every day. One minute, you're a parent , seeing the kids off to school. Then you're off to work, and you're a driver, passenger, or pedestrian. Go to the branch meeting and you are a union activist. So in your daily life you take on a number of different roles, and get used to switching between them. Used properly, role plays can help you to run a lively, active, arid effective course. Role playing involves everyone, helps them to develop skills, and gives them practice in applying Information to problems. Because your course is a 'safe' environment where you do not pay a price for making n ml stake, a role play can give people confidence in trying out new ideas. So you could try to get participants to Improve the way they run union meetings; talk to members, management, or journal lets; or work on a negotiating team.
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