Zobrazeno 1 - 10 of 24 pro vyhledávání: '"S. J. Du Toit"'
1
Akademický článek
Metrisering
Autor: S. J. du Toit
Publikováno v: South African Journal of Business Management, Vol 1, Iss 4 (1970)
South Africa is at present experiencing a radical change by the introduction of the metric system. In this article, the advantages of the modern internationally accepted metric system (S.I.) are sketched. To obtain the full benefit of this system, it
Externí odkaz: https://doaj.org/article/12a56026591a4983b0cc82b73335e7b3
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2
Akademický článek
Neutronefisika as navorsingsgebied
Autor: S. J. du Toit
Publikováno v: Koers : Bulletin for Christian Scholarship, Vol 31, Iss 10 (1964)
Alhoewel die Kernfisika in die populêre opvatting beskou word as ’n moderne ontwikkeling, gaan die geskiedenis daarvan reeds relatief ver terug in die verlede van die Fisika. Rutherford het reeds in 1911 die atoomkern ontdek, en in 1913 het J. J.
Externí odkaz: https://doaj.org/article/02393d8d31c4482798776a19040e9884
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3
Elektronická kniha
Rhodesia: Past and Present (Classic Reprint)
Autor: S. J. Du Toit
Excerpt from Rhodesia: Past and Present (Classic Reprint)One remark only need be added. When we started for the North, the secretary of the Chartered Company kindly supplied us with letters of introduction to all officials of the Company in Mashonala
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5
Dust exposure and pneumoconiosis in a South African pottery. 1. Study objectives and dust exposure
Autor: R Cronje, R. S. J. Du Toit, D Rees
Publikováno v: Occupational and Environmental Medicine. 49:459-464
Dust exposure and pneumoconiosis were investigated in a South African pottery that manufactured wall tiles and bathroom fittings. This paper describes the objectives of the investigation and presents dust measurement data. x Ray diffraction showed th
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3d7d1a7e205cf04b620f61858f8557f
https://doi.org/10.1136/oem.49.7.459
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6
EVIDENCE FOR AN AMPHIBOLE ASBESTOS THRESHOLD EXPOSURE FOR ASBESTOSIS ASSESSED BY AUTOPSY IN SOUTH AFRICAN ASBESTOS MINERS
Autor: E. Hnizdo, Gerhard K. Sluis-Cremer, R. S. J. Du Toit
Publikováno v: Annals of Occupational Hygiene. 34:443-451
In an attempt to determine whether there exists a threshold asbestos dose below which asbestosis does not occur, data on 807 men who had worked on amphibole asbestos mines and undergone autopsy were analysed. When exposure was expressed as fibre-year
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8ff5cee7d81666fc3fc82fc89a320d97
https://doi.org/10.1093/annhyg/34.5.443
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7
Estimating the quartz exposure of South African gold miners
Autor: G. W. Gibbs, R. S. J. Du Toit
Publikováno v: The Annals of occupational hygiene. 46(7)
The possibility that dust and silica exposure estimates in epidemiological studies of South African gold miners have been underestimated has been postulated for some years. These exposure estimates were obtained by converting particle number concentr
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::41a63eec6910b11ba45c0c1a415cc680
https://pubmed.ncbi.nlm.nih.gov/12270884
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9
An estimate of the rate at which crocidolite asbestos fibres are cleared from the lung
Autor: R. S. J. Du Toit
Publikováno v: The Annals of occupational hygiene. 35(4)
The cumulative fibre exposure of 36 deceased persons who had been employed on crocidolite asbestos mines of the NW Cape was compared with their lung burden determined by fibre count by optical microscope. Allowance for the period which lapsed between
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce42439be843560c8d6b1993777ae437
https://pubmed.ncbi.nlm.nih.gov/1750732
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