Author:Kuyper, L; Weinert, IAG; Mcgill, AEJDate:1993The effect of modified atmosphere packaging in combination with the addition of calcium hypochlorite on the atmosphere composition, colour and microbial quality of mushrooms was investigated. A modified atmosphere which slowed down discolouration ...Read more
Author:Kfir, R; Genthe, BettinaDate:1993The applications of immunological techniques to the analytical challenges presented by water pollution and its tremendous expansion during recent decades are reviewed. Examples of the immunodetection methods evaluated for their advantages and ...Read more
Author:Le Maitre, David C; Van Wilgen, BW; Richardson, DMDate:1993Managers of natural areas require a wide variety of up-to-date and accurate information and maps to manage their lands effectively. This paper reviews the objectives of conservation management, and the problems faced by mountain catchment ...Read more
Author:Grantham, GH; Thomas, RJ; Eglington, BM; Debruin, D; Atanasov, A; Evans, MJDate:1993Olivine-plagioclase and phlogopite-plagioclase coronas have been identified from olivine melanorites of the mid- to late Proterozoic Equeefa Suite in southern Natal, South Africa. Olivine, in contact with plagioclase, is mantled by a shell ...Read more
Author:Kfir, R; Du Preez, M; Genthe, BettinaDate:1993Monoclonal antibodies (MAbs) against heat-killed Escherichia coli and Klebsiella oxytoca originating from wastewater effluent were raised in BALB/C mice. The fusion was highly successful and three hybridomas cloned were selected to study the ...Read more
Author:McGillivray, RDate:1993Local information distribution in electronic form in South Africa is a new and growing industry. Research shows that in any country the needs of users of information are largely for local information and to a lesser extent for overseas or ...Read more
Author:Toerien, DF; Walters, NM; Swart, DH; Hofmeyr, HPDate:Jan 1993Lutjeharms and Thompson decided that it was the opportune to assess critically what had been wrought by the “dramatic organisational and cultural changes” t o “the largest scientific organisation in Africa” the South African CSIR. This analysis ...Read more
Author:Louw, M; Reid, SJ; Watson, TGDate:Jan 1993A Bacillus brevis gene coding for an endo-(1, 3-1, 4)-beta-glucanase was cloned in Escherichia coli and sequenced. The open reading frame contains a sequence of 759 nucleotides encoding a polypeptide of 252 amino acid residues. The amino acid ...Read more
Author:Bollong, CA; Vogel, JC; Jacobson, L; Van der Westhuizen, WA; Sampson, CGDate:Jan 1993Several 14C dates have been obtained from the fibre temper in cooking bowls made by the forbears of the Zeekoe River Bushmen (Basarwa), South Africa. Although the temper appears to be burned grass, the Q (13) C values do not match those of ...Read more
Author:Van Zwieten, ACTM; Bulloch, JHDate:Feb 1993The present report describes a study aimed at assessing the influence of interstitial solute concentrations, in the form of carbon, nitrogen and oxygen, on the mechanical properties of a 40% Cr-Fe stainless steel. It’s observed that carbon ...Read more
Author:Schoonees, JS; Theron, AKDate:Feb 1993A literature search was undertaken to collect field data on longshore sediment transport. This yielded a large number of data sets (273 points for bulk transport rates) from a variety of sites around the world. Data are especially lacking for ...Read more
Author:Vleggaar, R; Horak, RM; Maharaj, VJDate:Feb 1993Incorporation studies of [2-(2)H(3),2-(13)C].acetate and different [2H, 13C]-labelled mevalonolactones into verruculogen established the stereochemical course of ring C formation in fumitremorgin B, which results in the loss of stereochemical ...Read more
Author:Van Zwieten, ACTM; Bulloch, JHDate:Feb 1993The present paper has attempted to briefly review the factors that influence the toughness properties of ferritic stainless steels. The structure and constitution of ferritic stainless steels were discussed together with the effects of second ...Read more
Author:Van Zyl, A; Thackeray, MM; Duncan, GK; Kingon, AI; Heckroodt, RODate:Feb 1993Two aluminium oxyhydroxides, boehmite and pseudoboehmite, and two aluminium hydroxides, bayerite and gibbsite, have been investigated as precursors for the synthesis of the solid electrolyte, beta alumina. Reaction pathways and products have ...Read more
Author:Geldenhuys, CJDate:Feb 1993An annotated list of species recorded in the forests of the southern Cape is provided. The flora comprises 470 species which belong to 280 genera and 106 families (50 monogeneric families, 32 monospecific families and 193 monospecific genera). ...Read more
Author:Gummow, RJ; Liles, DC; Thackeray, MMDate:Mar 1993Rietveld refinements of X-ray data of LiCoO2 prepared at 400-degrees-C and a chemically-delithiated product Li0.5CoO2 using space group symmetries R3mBAR and Fd3m are reported. Refinements in both R3mBAR (layered-type structure) and Fd3m ...Read more
Author:Lodolo, EJ; Van Zyl, WH; Rabie, CJDate:Mar 1993The nuclear DNA (nDNA) of different isolates of three closely related, toxin-producing Fusarium species, F. moniliforme, F. nygamai and F. napiforme, was compared to ascertain the sensitivity of a molecular method to distinguish these three ...Read more
Author:Young, R; Gomez, MH; McDonough, CM; Waniska, RD; Rooney, LWDate:Mar 1993Sorghum grains varying in grain hardness or endosperm texture (soft and intermediate) and starch composition (nonwaxy and waxy) were parboiled. Whole grain (one volume) and water (three volumes) were boiled, soaked for 12 hr, and brought to ...Read more
Author:Thackeray, MM; Rossouw, MH; De Kock, A; De la Harpe, AP; Gummow, RJ; Pearce, K; Liles, DCDate:15 Mar 1993Manganese dioxide has for many years found widespread use as a cathode material in aqueous Leclanche, zinc chloride and alkaline cells and, more recently, in nonaqueous lithium cells. However, despite the large number of polymorphic structures ...Read more