Sökning: "viklander"
Visar resultat 1 - 5 av 31 avhandlingar innehållade ordet viklander.
1. Melting of urban snow deposits : a water quality study
Sammanfattning : .... LÄS MER
2. Snow quality in urban areas
Sammanfattning : The studies reported on this thesis aim to provide information and increase knowledge about the quality of urban snow and the path of pollutants. The results develop a basis for decisions regarding the prevention of environmental damage. LÄS MER
3. Compaction and thaw deformation of frozen soil : permeability and structural effects due to freezing and thawing
Sammanfattning : This thesis is the result of the two projects:"Deformations in winter compacted soils" and "Permeability changes in a fine-grained till due to freeze/thaw". The aim of the first project was to study whether it is possible to compact frozen soils, in road embankments etc. LÄS MER
4. Frusen jords packnings- och deformationsegenskaper
Sammanfattning : .... LÄS MER
5. Organic micropollutants in highway stormwater and the role of a gross pollutant trap-biofilter stormwater treatment train
Sammanfattning : The studies which this thesis is based on assessed the stormwater quality in a highway catchment located in Sundsvall, Sweden, and examined the performance of a gross pollutant trap (GPT)-biofilter stormwater treatment train (TT) downstream of the catchment, in terms of removal efficiency, intra-event variability, and environmental risk reduction of organic micropollutants (OMPs) for the receiving water body. Assessing the occurrence and event mean concentrations (EMCs) of all OMPs in the catchment revealed that bisphenol A (BPA), octylphenol (OP), nonylphenol (NP), five carcinogenic and four non-carcinogenic polycyclic aromatic hydrocarbons (PAHs), and C16-C40 fractions of petroleum hydrocarbons (PHCs) all potentially pose an environmental risk to freshwater (EMCs >PNEC: predicted non-effect concentration), while alkylphenolethoxylates, six low- molecular weight PAHs, and lighter fractions of PHCs (C10-C16) do not occur at problematic levels. LÄS MER