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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
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Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 231 to 240 of 1254 (0.071 seconds)Spelling suggestions: "subject:"water pollution."" "subject:"water collution.""
| 231 |
Factors controlling the solubility of trace metals in rainwatersKeyse, Sarah January 1996 (has links)
No description available.
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| 232 |
Aspects of nitrogen dynamics and the functioning of river marginal wetlandsBaker, Christopher John January 1994 (has links)
No description available.
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| 233 |
Groundwater recharge and pesticide leaching in a Triassic sandstone aquifer in South-West EnglandFrey, Andreas January 1999 (has links)
No description available.
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| 234 |
A numerical study of flow and contaminant transport in fractured porous mediaPollard, Adam Spencer January 1998 (has links)
No description available.
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| 235 |
Self-tuning PI control of industrial wastewater treatment process and simultaneous on-line estimations of oxygen uptake and transfer ratesCakici, Avni January 1992 (has links)
No description available.
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| 236 |
Field assessment of the environment impact of potential pollutants on land irrigated with leachate generated from municipal solid wastesRuegg, Josephine January 1993 (has links)
No description available.
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| 237 |
Phosphorus release from 12 contrasting European soils under their aggregate size fractionsMaguire, Rory January 1996 (has links)
No description available.
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| 238 |
The fate of terrestrially derived phosphorus in estuariesErnstberger, Helmut Hans January 1999 (has links)
In this study the phase distribution of phosphorus (P) is examined in 7 Scottish East Coast rivers. Rivers with contrasting catchment properties were selected, including pristine highland rivers, lowland rivers with agricultural land use and a range of intermediate rivers. Suspended particulate matter (SPM) was rich in organic P and had total P contents in the range of 0.1 to 1%. Highest total P contents of particles were observed for the river richest in dissolved P. The pristine highland systems showed the lowest total P contents. Large increases in exchangeable P in summer were partly attributable to the presence of phytoplankton. Phytoplankton accounted for less than half and more typically around 20% of organic carbon in SPM. The remainder is likely to consist largely of amorphous, humic substances. Sorption properties (e.g. EPC<sub>0</sub>, equilibrium phosphate concentration at zero adsorption) of SPM were examined using adsorption isotherms. Particle concentrations for sorption experiments were kept low (ca. 200 mg/l) to allow extrapolations to natural conditions. SPM from highland rivers showed the largest affinity for P. Lowland rivers displayed a comparatively low affinity for P. EPC<sub>0</sub> values of SPM closely reflected soluble reactive phosphorus concentrations in river water. SPM from highland and lowland rivers showed consistent differences in organic carbon content. Organic carbon content of SPM was correlated to sorption parameters of SPM. The sorption parameters of intermediate rivers could be explained by mixing particles of different affinity, using organic carbon contents to trace the proportions of particle mixing. Under estuarine conditions the affinity of fluvial SPM for P decreases. The magnitude of the change is insufficient to cause desorption in the pristine highland rivers. Up to 80-fold increases in EPC<sub>0</sub> were observed for the remaining rivers suggesting desorption takes place in the estuary.
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| 239 |
Fractionation of chromium toxicity in waterWararatananurak, Puchong January 2000 (has links)
No description available.
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| 240 |
Nitrate reduction and nitrous oxide production in a eutrophic estuaryOgilvie, Brett January 1995 (has links)
No description available.
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