The cuticular layer of the skin of certain cyprinidae

No Abstract

Huldigingsbundel Paul van Warmelo

Text in Afrikaans, English, Dutch, German and LatinHuldigingsbundel aangebied aan professor Paul van Warmelo by geleentheid van sy sewentigste verjaarsdag op 19 November 1984Voorwoord / Preface (pages vii-x) -- Curriculum vitae (pages xi-xii) -- Publikasies (pages xiii-xxii) -- Die mens Paul van Warmelo / F.J. du T. Spies (pages 2-5) -- Mancipatio by slaves in Classical Roman Law / Hans Ankum (pages 6-19) -- Na vijfenzestig jaar / J.Th. de Smidt (pages 20-31) -- Ongepubliseerde aantekeninge op die Inleidinge van Hugo de Groot / J.C. de Wet (pages 32-37) -- Some reflections on the reception of the “Proper Law” doctrine into South African law / A.B. Edwards (pages 38-69) -- De pecuniaire bescherming van de koper te goeder trouw van andermans zaak in Hugo de Groots De lure Belli ac Pacis / R. Feenstra (pages 70-81) -- Ontmoetingen in de Rechtsgeschiedenis / Heleen Gall (pages 82-93) -- Romeinsrechtelijke invloeden op de rechtspositie van het kind in het oude recht van de Zuid-Nederlandse gewesten / John Gilissen (pages 94-109) -- Nemo Debet Bis Vexari pro Una et Eadem Causa / C.P. Joubert (pages 110-117) -- Afstanddoening van Serwituutregte / D.J. Joubert (pages 118-127) -- The will that won’t: formalities gone bananas / Ellison Kahn (pages 128-143) -- Nochmals zu ‘in bonis habere’ / Max Kaser (pages 144-165) -- Some reflections on Section 1 (1 )(a) of the Apportionment of Damages Act 1956 and Contributory Intent / Johan Scott (pages 166-179) -- Authors as authority / Sir Thomas Smith -- Het Raets-besluit van burgemeester Velleius / J.E. Spruit (pages 194-217) -- The fate of the institutional system / Peter Stein (pages 218-229) -- Concubinatus in Roman law / Ph.J. Thomas (pages 230-237) -- Cicero as a legal philosopher / D.H. van Zyl (pages 238-257) -- Die uitbreiding van die werking van die Romeins-Hollandse Reg deur middel van “Vrywillige Onderwerping” deur lede van die Outochtone bevolking / D.P. Visser (pages 258-276) -- Die Recensio der Pandekten und die moderne Romanistik / F. Wieacker (pages 276-285) -- Die Rechtsprechung des Supreme Court of the Cape of Good Hope am Ende der sechziger Jahre des 19. Jahrhunderts / R. Zimmermann (pages 286-307

The fungus flora of stock feeds in South Africa

A total of 60 spp. of fungi (of which 13 had not been reported before) representing 34 genera was isolated from 39 samples of feed examined. The spp. and their frequency of isolation are tabulated. The fungi most frequently encountered were: Aspergillus flavus, A. nidulans, A. niger, Cladosporium sp., Fusarium moniliforme [Gibberella fujikuroi], Hormodendrum sp., Rhizopus stolonifer, and Trichoderma viride. A. flavus was present in a viable state in 16 of the 39 feed samples, but aflatoxin could be detected chemically in only 5 of them. In 3 samples, in which aflatoxin was detected, A. flavus did not appear among the fungi isolated. Of 18 samples fed to experimental animals none produced symptoms of toxicity, although aflatoxin was present in 2 of them.The journals have been scanned in colour with a HP 5590 scanner; 600 dpi. Adobe Acrobat v.11 was used to OCR the text and also for the merging and conversion to the final presentation PDF-format

Language endangerment and language documentation in Africa

Non peer reviewe

African Linguistics in Central and Eastern Europe, and in the Nordic Countries

Non peer reviewe

Juxtaposing a cultural reading of landscape with institutional boundaries: the case of the Masebe Nature Reserve, South Africa

The article explores theoretically the juxtaposition of local stories about landscape with institutional arrangements and exclusionary practices around a conservation area in South Africa. The Masebe Nature Reserve is used as a case study. The article argues that the institutional arrangements in which the nature reserve is currently positioned are too static, and consequently exclusionary, in their demarcation of boundaries. This stifles local communities’ sense of belonging to these landscapes. Hence, they strongly resent and feel alienated by the nature reserve. Their opposition and alienation often manifests in poaching. The empirical material is based on how local people living adjacent to the Masebe Nature Reserve have historically named and interpreted the area’s impressive sandstone mountains, in the process creating a sense of belonging. Juxtaposing this mostly tranquil cultural reading of the landscape to the institutional practices of boundary demarcation gives the analysis an immediate critical edge regarding issues of social justic

Susceptibility of 12% CR steels to sensitisation during welding of thick gauge plate

In recent years, the subject of sensitisation in unstabilised ferritic/martensitic dual phase 11-14%Cr steels has been investigated in some detail after a number of failures in service due to accelerated corrosion. It was found that sensitisation could occur due to a number of different mechanisms which were dependant on the heat treatment, the number of thermal cycles and the phases present in the material. All the detected modes of sensitisation could be prevented by stabilisation with titanium or niobium and suitable design of the material composition to produce a suitably high ferrite factor. However, these options could not readily be applied to thick gauge plate and therefore 12%Cr material available in the market above 10mm thickness still tends to be unstabilised. This project was initiated with the intention of determining how sensitisation would manifest itself during welding of thicker plates and whether the degree of sensitisation could be controlled to acceptable levels by appropriate control of the welding parameters. This was done in two phases, namely evaluation of actual welds produced using varying heat input parameters and by simulation of the thermal treatment using a Gleeble 3500 thermomechanical simulator. The samples were evaluated using standard immersion tests (Strauss test) and electrochemical techniques. Mode 2 sensitisation was found to occur on all samples and on all materials, irrespective of the welding parameters. This occurred at all points where the heat affected zone (HAZ) from one weld bead intersected with the HAZ from a previous bead. However, the sensitised regions were generally well below the surface of the material and would therefore not be exposed to the atmosphere and any corrosive environment. The exception to this rule occurred when very high heat input resulted in an excessively large HAZ or when poor weld bead positioning and inappropriate bead overlap resulted in sensitisation of the HAZ on the surface. Mode 3 sensitisation did not occur within the range of welding parameters investigated. Mode 4 sensitisation was found to occur on all materials but could not reliably be detected by the Strauss test. Electrochemical evaluation clearly showed that sensitisation was present in the subcritical HAZ on all materials, irrespective of welding conditions. However, the degree of sensitisation was very low. From a practical perspective, problems in service due to sensitisation are most likely to arise from very high heat input levels and welding defects such as excessive overlap of weld beads and incomplete fusion

Ethnological publications Nr 17 - 22

ETHNOLOGICAL PUBLICATIONS No.17: The Bakgatla ba ga Mosetlha No.18: The Ndebele of J. Kekana No.19: The Bahwaduba No.20: The tribes of the Vryburg District No.21: A genealogy of the house of Sekhukhune No.22: History of. Ha MakuyaDigitised by the Department of Library Services in support of open access to information, University of Pretoria, 2020http://explore.up.ac.za/record=