Browsing by Author "Du Plessis, Johan L."
Now showing items 1-6 of 6
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Associations of outdoor fine particulate air pollution and cardiovascular disease in 157 436 individuals from 21 high-income, middle-income, and low-income countries (PURE): a prospective cohort study
Hystad, Perry; Du Plessis, Johan L.; Larkin, Andrew; Rangarajan, Sumathy; AlHabib, Khalid F. (Elsevier, 2020)Background Most studies of long-term exposure to outdoor fine particulate matter (PM2·5) and cardiovascular disease are from high-income countries with relatively low PM2·5 concentrations. It is unclear whether risks are ... -
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 ... -
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 ... -
A retrospective analysis of nickel exposure data at a South African base metal refinery
Young, Monica M.; Van der Merwe, Cornelius J.; Linde, Stefan J.L.; Du Plessis, Johan L. (Taylor & Francis, 2018)This study aimed to analyze historical soluble nickel exposure data from a South African base metal refinery and to identify trends in the soluble nickel exposure from 1981 until 2014 in the electrowinning department. Exposure ... -
Self-reported skin colour and erythemal sensitivity vs. objectively measured constitutive skin colour in an African population with predominantly dark skin
Wright, Caradee Y.; Wilkes, Marcus; Du Plessis, Johan L.; Rheeder, Anthony I. (Wiley-Blackwell, 2015)Background Skin colour is an important factor in skin-related diseases. Accurate determination of skin colour is important for disease prevention and supporting healthy sun behaviour, yet such data are lacking for dark ... -
South African and international reference values for lung function and its relationship with blood pressure in Africans
Van Rooyen, Yolandi; Huisman, Hugo W.; Schutte, Aletta E.; Eloff, Fritz E.; Du Plessis, Johan L.; Kruger, Annamarie; Van Rooyen, Johannes M. (Elsevier, 2015)Background In South Africa respiratory diseases are highly prevalent, with cardiovascular disease being a manifestation. However, international reference values for lung function are commonly used, which may not be ...