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结果 41-50 的 306
Microbiology: detection of [waterborne] bacterial pathogens and their occurrence.
1981
Reasoner D.J.
Bringing about an end to ocean dumping [Alternative uses for sludge, including acclaiming strip-mines for pasture].
1981
Feliciano D.V.
Materials balance in aerated static pile composting [Wastewater sludge processing].
1981
Sikora L.J. | Willson G.B. | Colacicco D. | Parr J.F.
Losses of nitrogen, phosphorus and potassium from agricultural watersheds of minor rivers in the Oka valley [USSR].
1981
Kudeyarov V.N. | Bashkin V.N. | Kudeyarova A.Y.
The losses of nitrogen (NH(,4), NO(,3), N(, org)), phosphorus (P(, ortho), P(, poly), P(, org)) and potassium (K('+)) from watershed areas of minor rivers, draining regions of different agricultural land use in the Oka Valley, U.S.S.R., were investigated. No N, P, and K pollution was shown in these watersheds, even though the rate of losses was found to be highly correlated with the amounts of mineral fertilizers and FYM applied. The losses were also determined by the natural soil fertility, erosion processes and soil texture under the similar level of fertilization.
显示更多 [+] 显示较少 [-]Municipal wastewater reutilization on cultivated soil.
1981
Terry R.E. | Tate R.L.
Re-utilization of municipal wastewater sludges: metals and nitrate.
1981
Chang A.C. | Page A.L. | Bingham F.T.
Characterization of air pollutants from an activated sludge process.
1981
Scheff P.A. | Holden J.A. | Wadden R.A.
Direct measurement of gaseous nitrogen losses from an effluent irrigation area [Santa Barbara County; California].
1981
Ryden J.C. | Lund L.J. | Whaley S.A.
Pipeline friction losses for wastewater sludges.
1981
Mulbarger M.C. | Copas S.R. | Kordic J.R. | Cash F.M.
Comments on the United States Environmental Protection Agency's proposal to add ammonia to the toxic pollutant list.
1981
Lee G.F. | Jones R.A.
