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Pulmonary and systemic toxicity following exposure to nickel nanoparticles.
The subject, a 38-year-old previously healthy male, inhaled nanoparticles of nickel while spraying nickel onto bushes for turbine bearings using a metal arc process and died 13 days after being exposed and the cause of death at autopsy was adult respiratory distress syndrome.
Red or rufous albinism in southern Africa.
The combination of the unusual red skin colour, ginger to reddish hair colour, low susceptibility to sun damage, and minimal visual problems, in affected individuals, suggested that they form a group which is distinct from the brown and other types of albinism.
Rock drills used in South African mines: a comparative study of noise and vibration levels.
Isolating the operator from the drill, as for the self-propelled drill, addresses the problems of both vibration and noise exposure, and is a possible direction for future development.
Ochronosis in Black South Africans Who Used Skin Lighteners
Electron microscopy shows that the changes arise from a breakdown of normal collagen, and Histologically, there is increased basophilia of the collagen, followed by the formation of yellow fibers.
Evidence against a role for SV40 in human mesothelioma.
Findings strongly argue against a role of SV40 by any known transformation mechanism in the etiology of the majority of human malignant mesotheliomas.
Chlamydia pneumoniae in atheroma: consideration of criteria for causality.
There is a strong correlation between C pneumoniae and arterial atheromatous lesions and the organism may contribute to the disease process by damaging smooth muscle cells.
Death following exposure to fine particulate nickel from a metal arc process.
The cause of death was determined to be shock lung or Adult Respiratory Distress Syndrome (ARDS), associated with the very fine particulate nature of the metal fume and the large amount inhaled.
Asbestos lung fibre concentrations in South African chrysotile mine workers.
The fibre content in the lungs of nine former chrysotile mine workers was ascertained by transmission electron microscopy and results support the contention that South African chrysOTile is not heavily contaminated by tremolite.
Mineralogy and Malignant Mesothelioma: The South African Experience
South Africa is a uniquely mineral rich country. Of the six types of asbestiform minerals found in the country, three, namely crocidolite, amosite and chrysotile were mined and milled on a large
Arrangements of collagen fibrils and muscle fibres in the female urethra and their implications for the control of micturition.
X-ray diffraction has been used to determine collagen fibril orientations in the female human, mouse, rat and rabbit urethra and the results are used to explain sphincter and opening mechanisms.