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Inorganic fly-ash spheres as pollution tracers
1996
Rose, N.L. (Environmental Change Research Centre, University College London, 26 Bedford Way, London WC1H 0AP (United Kingdom))
Fly ash application on two acid soils and its effect on soil salinity, pH, B, P and on ryegrass growth and composition
1999
Matsi, T. | Keramidas, V.Z. (Soil Science Laboratory, Aristotle University, Thessaloniki, 54006 (Greece))
The effect of fly ash on plant growth and yield of tomato
1996
Khan, M.R. | Khan, M.W. (Department of Plant Protection, Institute of Agriculture, Aligarh Muslim University, Aligarh 202-002 (India))
[New method for purification of chromate containing groundwater]
1993
Aktor, H. | Christensen, T.
Model studies on heterogeneous reactions of organic components within aerosols and their influence on the condensation of water: Surface-analytical investigations on the water up-take of fly-ashes before and after exposition to fluoranthene and toluene
1993
Faude, F. (Kernforschungszentrum Karlsruhe (Germany). Inst. fuer Radiochemie) | Goschnick, J.
A two-year experience on 15N-urea fertilization of a corn field amended with fly ash
1989
Cervelli, S. (Institute of Soil Chemistry, Pisa (Italy)) | Di Giovanni, F. | Perna, A. | Petruzzelli, G.
Ash from cereal and rape straw used for heat production: liming effect and contents of plant nutrients and heavy metals
1997
Sander, M.L. (Swedish Univ. of Agricultural Sciences, Uppsala (Sweden). Dept. of Ecology and Environmental Research) | Andren, O.
Defluoridation of water by adsorption on fly ash
1990
Chaturvedi, A.K. (Banaras Hindu Univ., Varanasi (India). Dept. of Applied Chemistry) | Yadava, K.P. | Pathak, K.C. | Singh, V.N.
Increment of conifers and its air pollution-related tendencies in Ida-Viru and Laeaene-Viru counties
2000
Ots, K. | Rauk, J. (Estonian Agricultural Univ., Tartu (Estonia). Forest Research Inst.)
The research was conducted in 1990-99 in forest observation sites in the neighbourhoods of industrial enterprises of Kohtla-Jaerve-Johvi and the cement plant of Kunda and in the control area in Lahemaa National Park. Differences between the radial increments of conifers growing under pollution and in a relatively unpolluted area were estimated. The stands selected for investigation were similar as to their edaphic conditions and forest survey indicators. The high sensitivity of conifers to long term emissions of pollutants into the atmosphere from oil shale based power engineering and chemical industry, production of building materials and fertilisers and other industrial enterprises in the investigation area is expressed as changes in the radial increment of trees with the changes depending on the pollution load and alterations in precipitation and soil
Afficher plus [+] Moins [-]Chronology of needle retention in Scots pine trees growing near the Ahtme Power Plant
2000
Pensa, M. (University of Tartu, Tartu (Estonia). Inst. of Ecology)
A needle trace method was used to reveal the chronology of needle retention and growth rates on Scots pine in a stand near a power plant operating on oil shale. During the period of 1964-97, the height increment varied between 31 and 64 cm yr (-1), and the radial increment ranged from 1.06 to 3.71 mm yr (-1). The average needle density on the newly sprouted shoots of the main stem was 5.9 needles cm (-1) and the mean needle production on the same shoots was 266. The average number of needle sets along the main stem ranged from 2.2 to 3.1, the mean age of needles varied between 1.3 and 2.3 years. The short-term maximum concentrations of oil shale fly ash and SO2 ranged from 55 to 2510, and from 75 to 270 micro g m (-3), respectively. The annual average concentrations of fly ash varied between 6 and 95 micro g m (-3), and of SO2 between 2.5 and 10 micro g m (-3). Changes in neither the concentrations of fly ash nor SO2 were associated with the variation in needle retention of Scots pine. In the case of height increment, however, the correlation with the annual average concentration of oil shale fly ash was significant (r=0.83; p0.05)
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