PubMed Health⌕ Search

Biomedical subjects

D V Bates

Publications and source records attributed to D V Bates.

At least 55 records · Page 3Linked to original sources
PubMed1983

Vibration white finger disease among tree fellers in British columbia.

On the basis of symptomatology, 51% of 146 fellers from seven coastal lumber camps in British Columbia were found to be suffering from vibration white finger disease (VWFD). Symptoms were present in 70% of the men who had been engaged in felling for 11 to 15 years and in 75% of the men who had been employed in this occupation for more than 20 years. Prevalence rates were not changed by the exclusion of 57 fellers with a history of vibration exposure other than the chain saw, or with a history of other possible secondary causes. The prevalence of symptoms in an age-corrected control group was 2%. There was objective evidence of disease (delayed finger rewarming after cooling) in 31 of the 43 fellers with symptoms (72%) and in 13 of the 74 controls (18%) without symptoms. The median latency period for fellers with symptomatic VWFD was 7.3 years. There was no evidence that the condition was related to cigarette smoking.

Adult↗
PubMed1979

Community air pollution in Canada: a review and predictions for the 1980s.

The main trends in Canadian air pollution since the national program of surveillance began are reviewed in this paper. In common with the United States, significant improvements in sulfur dioxide and particulate pollution have been recorded in a number of cities after the institution of control measures. However, some areas with a concentration of certain industries still have considerable particulate pollution. Since emission of nitrogen dioxide is increasing in the United States, the consequent photochemical pollution in southern Ontario will probably continue to increase. Nitrogen dioxide concentrations in the air are elevated in some western Canadian cities, presumably because of the presence of plants that burn natural gas to generate electricity and increasing pollution from automobiles. There is increasing concern about community air pollution in cities with large metal-fabricating plants, and community exposure to asbestos fibres is likely to be an important concern in the 1980s.

Air Pollutants↗
PubMed1977

Respiratory effects of exposure to ozone plus sulfur dioxide in Southern Californians and Eastern Canadians.

Volunteer subjects were exposed in an environmentally controlled chamber in Los Angeles to SO2 and O3, separately and in combination, to study the enhanced toxicity of the O3 + SO2 mixture observed in a previous study in Montreal. Toxic responses to O3 + SO2 were less severe than observed previously, and only slightly more severe than with O3 alone. Sulfur-containing aerosols formed by chemical reactions within the chamber air may have contributed to the O3 + SO2 responses in the Montreal study. Adaptation of Los Angeles residents to ambient O3 may also contribute to response variability.

California↗