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Результаты 1361-1370 из 62,084
Sources of soluble organic nitrogen in activated sludge effluents.
1981
Parkin G.F. | McCarty P.L.
Effects of low-level SO2 fumigation on decomposition of western wheatgrass litter in a mixed-grass prairie.
1981
Dodd J.L. | Lauenroth W.K.
Aquatic sediments [Constituents, biological activity].
1981
DePinto J.V. | Young T.C. | Martin S.C.
Eutrophication [Nutrient loading concepts].
1981
Medine A.J. | Porcella D.B.
Fresh water macroinvertebrates [as indicators of water pollution].
1981
Quigley M.A.
Meat-, fish-, and poultry-processing wastes [Effluent treatment systems].
1981
Litchfield J.H.
Simulation model for agricultural non-point-source pollution [Water pollution].
1981
Tubbs L.J. | Haith D.A.
Environmental recovery in a marine ecosystem impacted by a sulfite process pulp mill.
1981
Cross S.F. | Ellis D.V.
Deposition of sulphur gases from multiple scattered sources in Alberta [Canada].
1981
Walker D.R. | Dick A.C. | Nyborg M.
Various measurements utilizing soils, plants, precipitation and free water surfaces indicate that approximately 7 to 9 kg/ha of sulphate S was deposited annually within an area of 4600 km('2). This area contained or had adjacent to its boundaries 10 S emission sources for which the provincial government had established a combined allowable daily emission of approximately 330 tonne S. At distance of 40 or more km from the emission sources the annual deposition rate had declined to 4 to 6 kg/ha.
Показать больше [+] Меньше [-]Effect of mean-cell residence time on organic composition of activated sludge effluents.
1981
Saunders F.M. | Dick R.I.
