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Rhodes eResearch Repository (2,360 recursos)
Repository of the academic and research output of the Rhodes University community.

Mostrando recursos 81 - 100 de 461

81. Finding the optimum: fluoridation of potable water in South Africa. - Muller, W.J.; Heath, R.G.M.; Villet, M.H.
Since the South African Department of Health has tabled legislation to make fluoridation of public water supplies mandatory, the issue of whether fluoride is beneficial or harmful has, once again, become controversial in South Africa.

82. An estimation of the standing stock and population structure of Upogebia africana (Crustacea : Thalassinidae) in the Knysna Estuary - Hodgson, A.N.; Allanson, B.R.; Cretchley, R.
Within the Knysna Estuary Upogebia africana has an extensive distribution from north of Leisure Isle to the Red Bridge, occupying 62% of the available intertidal zone.

83. An interdisciplinary cruise dedicated to understanding ocean eddies upstream of the Prince Edward Islands - Ansorge, I.J.; Froneman, P.W.; Lutjeharms, J.R.E.; Bernard, K.; Lange, L.; Lukac, D.; Backburg, B.; Blake, J.; Bland, S.; Burls, N.; Davies-Coleman, Michael T.; Gerber, R.; Gildenhuys, S.; Hayes-Foley, P.; Ludford, A.; Manzoni, T.; Robertson, E.; Southey, D.; Swart, S.; Van Rensburg, D.; Wynne, S.
A detailed hydrographic and biological survey was carried out in the region of the South-West Indian Ridge during April 2004.

84. A century of Zoology and Entomology at Rhodes University, 1905 to 2005 - Hodgson, A.N.; Craig, A.J.F.K.
The history of the Department of Zoology & Entomology at Rhodes University is traced from its origin with a single staff member, through the era of permanent heads of department to the present day staff.

85. Endothermy in African Platypleurine Cicadas: The Influence of Body Size and Habitat (Hemiptera: Cicadidae) - Sanborn, A.F.; Villet, M.H.; Phillips, P.K.
The platypleurine cicadas have a wide distribution across Africa and southern Asia.

86. Kappia lobulata (Apocynaceae, Periplocoideae), a new genus from South Africa - Venter, H.J.T.; Dold, A.P.; Verhoeven, R.L.; Ionta, G.
Kappia, a new genus from the Fish River Valley in the Eastern Cape Province, South Africa is presented.

87. Creating international support for the development of the news media in Africa - Banda, Fackson
This article analyses the issues associated with providing support mechanisms for strengthening media institutions in Africa.

88. A stability-indicating hplc assay with on-line clean-up for betamethasone 17-valerate in topical dosage forms - Smith, E.W.; Haigh, J.M.; Kanfer, I.
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.

89. Evaluation of the proposed FDA pilot-dose response methodology for topical corticosteroid bioequivalence testing - Demana, P.H.; Smith, E.W.; Walker, R.B.; Haigh, J.M.; Kanfer, I.
The visually-assessed human skin blanching assay methodology routinely practiced in our laboratories was modified to comply with the requirements of the pilot study so that visual and chromameter data could be compared.

90. Evaluation of the proposed FDA pilot-dose response methodology for topical corticosteroid bioeqivalence testing [authors' reply in Letters to the Editor] - Smith, E.W.; Walker, R.B.; Haigh, J.M.; Kanfer, I.

91. Analysis of chromameter results obtained from corticosteroid-induced skin blanching. I. Manipulation of data - Smith, E.W.; Haigh, J.M.; Walker, R.B.
One of the unresolved issues in the FDA Guidance document for topical corticosteroid bioequivalence testing is the method of manipulation suggested for the chromameter data.

92. The exploitation of Upogebia africana (Crustacea: Thalassinidae) for bait in the Knysna Estuary - Hodgson, A.N.; Allanson, B.R.; Cretchley, R.
The activities of people collecting Upogebia africana for bait at six popular collecting sites in the Knysna Estuary were monitored from February 1995 until April 1996.

93. Estimation of small reservoir storage capacities in Limpopo River Basin using geographical information systems (GIS) and remotely sensed surface areas: Case of Mzingwane catchment - Sawunyama, T; Senzanje, J; Mhizha, A
The current interest in small reservoirs stems mainly from their utilization for domestic use, livestock watering, fishing and irrigation.

94. The requirements for accurate analysis of pharmaceutical research at South African Universities - Haigh, J.M.; Smith, E.W.
International Pharmaceutical Abstracts is a valuable database for pharmaceutical research, although the multisiciplinary nature of this field implies that the database should only be the starting point of a search.

95. Maximum likelihood and Bayesian approaches to stock assessment when data are questionable - Booth, Anthony J.; Quinn II, Terrance J.
This study examines the use of age-structured maximum likelihood and Bayesian approaches for stock assessment of the Namibian monkfish, Lophius vomerinus, resource with questionable data, in which time series are short, abundance indices are variable, and research data conflict with commercial data.

96. ATP-sulphurylase: an enzymatic marker for biological sulphate reduction? - Oyekola, Oluwaseun Oyekami; Pletschke, Brett
Adenosine triphosphate-sulphurylase (ATPS) plays a major role in dissimilatory sulphate reduction.

97. Electrocatalytic behaviour of carbon paste electrode modified with iron(II) phthalocyanine (FePc) nanoparticles towards the detection of amitrole - Siswana, Msimelelo; Ozoemena, K.I.; Nyokong, Tebello
The new electrode (nanoFePc-CPE) revealed interesting electrocatalytic behaviour towards amitrole; pure catalytic diffusion-controlled process, with high Tafel slope (235 mV/decade) suggesting strong binding of amitrole with nanoFePc catalyst.

98. Anomalous behaviour of thermoluminescence from quartz: A case of glow peaks from a Nigerian quartz - Ogundare, O.G.; Chithambo, M.L.; Oniya, E.O.
Anomalous behaviour displayed by a thermoluminescence (TL) glow peak as radiation dose increases in a Nigerian quartz is presented.

99. Tetracarboxylic acid cobalt phthalocyanine SAM on gold: Potential applications as amperometric sensor for H[subscript 2]O[subscript 2] and fabrication of glucose biosensor - Mashazi, Philani N.; Ozoemena, K.I.; Nyokong, Tebello
This report describes the applications of cobalt tetracarboxylic acid phthalocyanine (CoTCAPc) self-assembled monolayer (SAM) immobilized onto a preformed 2-mercaptoethanol (Au-ME) SAM on gold surface (Au-ME-CoTCAPc SAM) as a potential amperometric sensor for the detection of hydrogen peroxide (H[subscript 2]O[subscript 2]) at neutral pH conditions.

100. Synthesis of triprenylated toluquinone and toluhydroquinone metabolites from a marine-derived Penicillium fungus - Scheepers, Brent A.; Klein, Rosalyn; Davies-Coleman, Michael T.
Two triprenylated toluquinone and toluhydroquinone marine fungal metabolites, 5-methyl-2-[(2?E,6?E)-3?,7?,11?-trimethyl-2?,6?,10?-dodecatrienyl]-2,5-cyclohexadiene-1,4-dione and 5-methyl-2-[(2?E,6?E)-3,7,11-trimethyl-2?,6?,10?-dodecatrienyl]-1,4-benzenediol, were synthesized in four and five steps, respectively, from 2-methyl-1,4-benzoquinone.

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