Sökning: "bulk sediment"
Visar resultat 1 - 5 av 24 avhandlingar innehållade orden bulk sediment.
1. Eastern equatorial Pacific bulk sediment properties and paleoceanography since the late Neogene
Sammanfattning : Reconstructing eastern equatorial Pacific (EEP) oceanography since the late Neogene (about 8 million years ago, Ma) is a central topic in current paleoceanographic investigations. The reason for this is two-fold. LÄS MER
2. Role of sediment organic matter quality and benthic organisms for the fate of organic contaminants in marine systems
Sammanfattning : Marine sediments constitute important contaminant sources within our environment. Organic matter input to marine sediments changes seasonally in terms of both quantity and quality, and has been profoundly altered in many coastal areas due to eutrophication. LÄS MER
3. Molecular analysis of lake-sediment organic matter : long-term dynamics and environmental implications in boreal lakes
Sammanfattning : Lake sediment organic matter is material composed of residues from plants, algae, animals, fungi and bacteria. Its molecular composition is dependent on the sources as well as secondary biotic and abiotic transformations, which combined generates a highly complex matrix. LÄS MER
4. New tools for sample preparation and instrumental analysis of dioxins in environmental samples
Sammanfattning : Polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs), two groups of structurally related chlorinated aromatic hydrocarbons, are of high concern due to their global distribution and extreme toxicity. Since they occur at very low levels, their analysis is complex, challenging and hence there is a need for efficient, reliable and rapid alternative analytical methods. LÄS MER
5. Sediment Characteristics and Sedimentation Rate Estimation in the Dukan Reservoir
Sammanfattning : The Dukan Reservoir has been created from the construction of the Dukan Dam on the Lesser Zab River where it crosses the Khalakan Thrust Sheet (Khalakan Mountains) through a gorge 65 km northwest of Sulaimani and 295 km northeast of Baghdad. The Dukan Dam is a multi-purpose dam which was built from 1954 to 1959 to control the flooding of the Lesser Zab River, and to provide irrigation, hydroelectricity, and water storage. LÄS MER