Sediments exchange

Xem 1-5 trên 5 kết quả Sediments exchange
  • Sediment Transport in Aquatic Environments is a book which covers a wide range of topics. The effective management of many aquatic environments, requires a detailed understanding of sediment dynamics. This has both environmental and economic implications, especially where there is any anthropogenic involvement. Numerical models are often the tool used for predicting the transport and fate of sediment movement in these situations, as they can estimate the various spatial and temporal fluxes.

    pdf344p cucdai_1 15-10-2012 24 11   Download

  • Severe chemical contamination was found in ash contaminated soil samples from open burning sites at both Agbogbloshie and Korforidua, as well as in sediment from a shallow lagoon at the Agbogbloshie site. Most samples contained numerous toxic and persistent organic chemical pollutants, as well as very high levels of many toxic metals, the majority of which are either known to be used in electronic devices, or are likely to be formed during the open- burning of materials used in such devices.

    pdf13p cao_can 02-01-2013 30 7   Download

  • Morphology change at tidal influent estuary is controlled by the net sediment transport rate of river and tidal transport, and variations in features (bathymetry, structures, etc.) where scour and shoaling take place. To examine river and tidal exchange sediment transport in a systematic way, we investigated sediment transportation at the Bach Dang estuary with a coupled tide, wave and sediment transport-morphology change numerical modeling system. Five simulations consisting of

    pdf8p dem_thanh 22-12-2012 23 3   Download

  • After some further kilometres, sodium begins to increase by ion exchange at the expense of calcium, producing a natural softening of the water. Eventually, the available calcium in the water is exhausted, but sodium continues to increase to a level greater than could be achieved purely by cation exchange. As chloride also begins to increase, this marks the point at which recharging water moving slowly down through the aquifer mixes with much older saline water present in the sediments (Figure 4.1).

    pdf32p cao_can 29-12-2012 18 3   Download

  • A method for determination of arsenic species in environmental samples have been studied (water and sediment of Nhatrang onshore). The analytical method used was ion-exchange liquid chromatography coupled on-line to atomic absorption pectrometry through hydride generation. It was applied to determination of As species in H3PO4+NH2OH.HCl extracts of sediments. The efficiency of this extraction procedure was studied in details. The sensibility of this investigated method allows both the analysis of As-poor samples and the dilution extracts, of As-rich ones.

    pdf12p uocvong01 24-09-2015 21 3   Download

CHỦ ĐỀ BẠN MUỐN TÌM

Đồng bộ tài khoản