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Digitale Medien

Mortality study among workers producing chromate pigments in France (1995)

Deschamps, F. ; Moulin, J. J. ; Wild, P. ; [weitere]

Springer

International archives of occupational and environmental health 67 (1995), S. 147-152

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ISSN: 1432-1246

Schlagwort(e): Epidemiology ; Lung cancer ; Chromate pigments

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin

Notizen: Abstract In a follow-up study of 294 men who had worked for at least 6 months in a chromate-producing factory in France between 1958 and 1987, only 16 were lost to follow-up and the number of person-years in the study was 5207. Occupational data were provided by the administration of the plant. The causes of deaths were ascertained from hospital and general practitioners' records. The observed numbers of deaths were compared with the expected numbers based on local rates with adjustment for age, sex and calendar time (standardized mortality ratio, SMR). The overall mortality did not differ significantly from that expected (SMR = 1.20, 95% CI = 0.98–1.47), whereas mortality due to lung cancer was in significant excess (SMR = 3.60, 95% CI = 2.13–5.68). Significantly higher lung cancer SMRs were found for workers whose duration of employment was more than 10 years. A non-significant excess was observed for all forms of digestive tract cancer (SMR = 1.30, 95% CI = 0.60–2.47). There were two cases of brain cancer when 0.24 was expected (SMR = 8.44, 95% CI = 1.02–30.49). No previous report has mentioned an association of brain cancer with chromate pigments; however, because of the small numbers involved, a chance excess should be considered.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00626345

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Digitale Medien

Cellulase production by trichoderma harzianum in static and mixed solid-state fermentation reactors under nonaseptic conditions (1985)

Deschamps, F. ; Giuliano, C. ; Asther, M. ; [weitere]

New York, NY [u.a.] : Wiley-Blackwell

Biotechnology and Bioengineering 27 (1985), S. 1385-1388

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ISSN: 0006-3592

Schlagwort(e): Chemistry ; Biochemistry and Biotechnology

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Biologie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung

Notizen: Cellulase production from lignocellulosic materials was studied in solid-state cultivation by both static and mixed techniques under nonaseptic conditions. The effects of fermentation conditions, such as moisture content, pH, temperature, and aeration, on cellulase production by Trichoderma harzianum using a mixture of wheat straw (80%) and bran (20%) were investigated. With a moisture content of 74% and a pH of 5.8., 18 IU filter paper activity and 198 IU endoglucanase activity/g initial substrate content were obtained in 66 h. The extension from static column cultivation to stirred tank reactor of 65 L capacity gave similar yields of cellulase.

Zusätzliches Material: 3 Ill.