11 results for “General Electric”
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Medical study · Medical research · 2004
Quantitative analysis of asbestos burden in a series of individuals with lung cancer and a history of exposure to asbestos
…Seventeen of the 20 cases were positive for ferruginous bodies (which were morphologically consistent with asbestos bodies). Five of these were found to have concentrations within the range used in our laboratory for the general population (
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Medical study · Medical research · 2008
A technical comparison of evaluating asbestos concentration by phase-contrast microscopy (PCM), scanning electron microscopy (SEM), and analytical transmission electron microscopy (ATEM) as illustrated from data generated from a case report
…333 asbestos fibers per gram of deparaffinized wet tissue. Both laboratories found asbestos bodies above the level the authors cite as the upper limit expected in the general population. The authors calculated that 97% of the…
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Medical study · Medical research · 2017
Spirometry: a predictor of lung cancer among asbestos workers
…concluded that spirometry can identify patients at risk of lung cancer and should be offered at least every three years. They noted that participation was voluntary and that the results cannot be generalized to general practice.
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Medical study · Medical research · 2020
Inhalation unit risk (IUR) of asbestos based on available science
…chrysotile's value was 0.026, about 65 times lower than crocidolite's. The authors stated that the general US EPA asbestos value, 0.23, would overestimate risk for Libby amphibole and chrysotile and dramatically underestimate…
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Medical study · Medical research · 2020
Estimates of carbon nanotube deposition in the lung: improving quality and robustness
…particles, although experimental confirmation of this would be of benefit, especially given their low density. The validation of fiber deposition models is significantly less extensive and, in general, focused on larger particles, e.g. asbestos. This…
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Medical study · Medical research · 2007
Fiber deposition in the tracheobronchial region: experimental measurements
…the data shows large variability among the bifurcations within the same generation, there is a general trend for the data obtained in these two replicas. Our results show that fiber deposition for carbon fibers increases with…
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Medical study · Medical research · 2012
Are airborne refractory ceramic fibers similar to asbestos in their carcinogenicity?
…there were 12 deaths from lung cancer. General population rates predicted 11.8 cases expected for an observed/expected (O/E) ratio of 1.0. Anticipated numbers of deaths from lung cancer under hypotheses of carcinogenicity…
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Medical study · Medical research · 2006
Exposure matrix development for the Libby cohort
…cohort, there has not been a comprehensive approach to characterizing these varied exposure pathways. Any approach toward assessing historical exposures among this population must account for three general categories: (1) occupational exposures, (2) residential exposures, and…
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Medical study · Medical research · 2002
Appropriate in vitro test conditions for genotoxicity testing of fibers
…metabolic activation) seems to be well suited to detect genotoxic activity of asbestos fibers with high accuracy. Further investigations are needed to shown whether this approach can be recommended for genotoxicity testing of fibers in general.
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Medical study · Medical research · 2006
A review of scientific literature examining the mining history, geology, mineralogy, and amphibole asbestos health effects of the Rainy Creek igneous complex, Libby, Montana, USA
…Registry shows that residents of Libby who had not been employed in the vermiculite mining or milling operations also appear to have developed asbestos-related pulmonary diseases at a higher rate than the general public elsewhere…
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Medical study · Medical research · 2002
Particle toxicology: from coal mining to nanotechnology
…20-50 mg/m3 and from 1-2 microm to 20-100 nm (ultrafine) as domestic fuel burning has decreased and vehicle sources have increased and attention has moved from coal mining industry to general environment…