خيارات البحث
النتائج 1 - 10 من 31
Development of a test-tube stress-ethylene bioassay for detecting phytotoxic gases | Development of a test-tube stress-ethylene bioassay for detecting phytotoxic gases
1982
Craker, L. E. | Fillatti, J. J.
A rapid, quantitative bioassay for detecting phytotoxic air pollutants has been developed. The technique uses wheat Triticum aestivum L. or tomato Lycopersicon esculentum L., seedlings growing on an agar medium in test-tubes. The seedlings are exposed to a pollutant in the test-tube and stress-ethylene induced by the pollutant is quantitatively measured by gas chromatography. Increases in ethylene production from seedlings exposed to a phytotoxic air pollutant as compared with controls not exposed to pollutants were related to the pollutant concentration.
اظهر المزيد [+] اقل [-]Hazardous waste leachate management manual
1982
Shuckrow, Alan J. | Pajak, Andrew P. | Touhill, C. J.
Bacterial indicators of pollution
1982
Pipes, Wesley O.
Making pollution prevention pay
1982
Huisingh, Donald | Bailey, Vicki
Specifying air pollution control equipment
1982
Predatory birds, pesticides, and pollution
1982
Cooke, A. S. | Bell, A. A. | Haas, M. B.
Performance and trace metal content of crambe and kenaf grown on sewage sludge-treated stripmine land
1982
Carlson, K.D. | Cunningham, R.L. | Garcia, W.J. | Bagby, M.O. | Kwolek, W.F.
Crambe Crambe abyssinica and kenaf Hibiscus cannabinus were grown for 3 years on stripmine land in three replications of the four treatments: control (no soil amendment); added commercial fertiliser; and two levels of digested sewage sludge (42% solids at the rate of 112 and 224 metric tons ha-1). Favourable growth responses to sludge and commercial fertiliser were observed with both crops, although performance of crambe on the sludge-treated plots were adversely affected by weed competition. The yield of kenaf increased with sludge amendment of the soil. Concentrations of eight metals (Fe, An, Mn, Cu, Pb, Cr, Cd, and Hg) in crambe seed were unaffected by plot treatment, but kenaf stems appeared to accumulate higher metal concentrations with soil amendment by sewage sludge. Neither crambe seed nor kenaf stalks accumulated unusual quantities of these metals, and thus neither crop would be expected to remove significant quantities of metals from soils. Metal concentrations of both soil and sludge samples were determined to evaluate translocation of metals to both crops.
اظهر المزيد [+] اقل [-]Effects of air pollution on farm commodities
1982
Holbrook, Marni | Jacobson, Jay S. | Millen, Amy A.
Air pollution--physiological effects
1982
McGrath, James J. | Barnes, Charles D.
The effects of air pollution and acid rain on fish, wildlife, and their habitats
1982
Olson, James E.
