Browsing Faculty of Health Sciences by Author "10057773 - Laubscher, Petrus Johannes"
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Assessment of dermal exposure and skin condition of workers exposed to nickel at a South African base metal refinery
Du Plessis, Johannes L.; Eloff, Frederik C.; Badenhorst, Casper J.; Olivier, Johretha; Laubscher, Petrus J.; Van Aarde, Michiel N.; Franken, Anja (Oxford Univ Press, 2010)Objectives: The objectives of this study were to assess dermal exposure of cell workers to nickel at a South African base metal refinery and to characterize their skin condition by measuring the skin hydration and trans ... -
Characterisation of and exposure of workers to tailings dust at South African platinum mines
Franken, Anja; Eloff, Frederik; Du Plessis, Johannes; Van Aarde, Michiel; Laubscher, Petrus (Mine Ventiliation Society of South Africa, 2009)The National Institute for Occupational Safety and Health (NIOSH) has conducted research to improve the ventilation of large-opening mines whose entries are at least 93m2 (1,000 ft2). The ventilation of large-opening mines ... -
Comparison of South African skin and sensitisation notations with those of other countries
Du Plessis, Johannes Lodewykus; Eloff, Frederik Christoffel; Franken, Anja; Laubscher, Petrus Johannes; Van Aarde, Michiel Nicolaas (Occupational Health Southern Africa, 2010)South African skin notations listed in the Regulations for Hazardous Chemical Substances (RHCS) and Mine Health and Safety Regulations (MHSR) were compared to those of selected other developed countries in order to ascertain ... -
Dermal exposure and changes in skin barrier function of base metal refinery workers co-exposed to cobalt and nickel
Du Plessis, J.L.; Eloff, F.C.; Engelbrecht, S.; Laubscher, P.J.; Van Aarde, M.N.; Franken, A. (The South African Society of Occupational Medicin, 2013)Refi nery workers are exposed to many metals, including cobalt and nickel, both of which are skin sensitisers, causing allergic contact dermatitis. Dermal exposure, and changes in skin barrier function [skin hydration, ... -
Dermal exposure sampling methods: an overview
Laubscher, Petrus; Van Aarde, Michiel; Eloff, Frederik; Du Plessis, Johannes; Booysen, R.; Badenhorst, C.J. (South African Society of Occupational Medicine, 2008) -
DNA damage and repair capacity in hairdressers exposed to chemical products: a pilot study
Eloff, F.C.; Preston, R.; Pretorius, P.J.; Du Plessis, J.L.; Laubscher, P.J.; Van Aarde, M.N.; Van der Westhuizen, F.H.; Franken, A. (SASOM, 2013)Hairdressers are exposed to numerous hazardous chemical substances, some of which are known or suspected allergens, carcinogens or organic solvents. The objectives of this study were to compare DNA damage and DNA repair ... -
DNA damage and repair detected by the comet assay in lymphocytes of African petrol attendants: a pilot study
Keretetse, G.S.; Laubscher, P.J.; Du Plessis, J.L.; Pretorius, P.J.; Van der Westhuizen, F.H.; Van Deventer, E.; Van Dyk, E.; Eloff, F.C.; Van Aarde, M.N.; Du Plessis, L.H. (Oxford Univ Press, 2008)Petrol attendants are exposed to petrol volatile organic compounds (VOCs) which may have genotoxic and carcinogenic effects. The single-cell gel electrophoresis assay (comet assay) is a method highly sensitive to DNA damage ... -
An exposure assessment of a laboratory assistant to hazardous chemical substances
Franken, Anja; Eloff, Frederik C.; Du Plessis, Johan L.; Van Aarde, Michiel Nico; Laubscher, Petrus J.; Franken, Anja; Eloff, Frederik C.; Du Plessis, Johan L.; Van Aarde, Michiel Nico; Laubscher, Petrus J. (Nutrition and Consumer Sciences, North-West University, 2009)A survey was conducted to measure exposure to hazardous chemical substances of a laboratory assistant working in a university laboratory, who complained of symptoms that could be indicative of chemical absorption. This ... -
Flow cytometric analysis of the oxidative status in human peripheral blood mononuclear cells of workers exposed to welding fumes
Du Plessis, Lissinda; Laubscher, Petrus; Jooste, Jacques; Du Plessis, Johan; Franken, Anja; Van Aarde, Nico; Eloff, Fritz (Taylor & Francis, 2010)Flow cytometry is a simple analytical technique that identifies, counts, and characterizes cells. The oxidative status of cells is influenced by many exogenous sources, such as occupational exposure to welding fumes. This ... -
The influence of vibration and noise from a handheld pneumatic (sculptors) chisel on the human cardiovascular system
Franken, Anja; Eloff, Frederik; Du Plessis, Johannes; Van Aarde, Michiel; Laubscher, Petrus (Mine Ventiliation Society of South Africa, 2009)Noise-induced hearing loss (NIHL) in the South African mining industry can be prevented, but only by incorporating more proactive and innovative measures into NIHL prevention programmes. At present, direct and indirect ... -
Low level exposure to nine volatile chemicals in research and testing laboratories at a South African university
Franken, Anja; Du Plessis, Johan L.; Eloff, Fritz C.; Laubscher, Petrus J.; Van Aarde, M. Nico; Franken, Anja; Du Plessis, Johan L.; Eloff, Fritz C.; Laubscher, Petrus J.; Van Aarde, M. Nico (2010)Universities have numerous research and testing laboratories where laboratory workers are exposed to various hazardous chemical substances on a regular basis with short periods of exposure possibly above the short-term ...