Search for dissertations about: "PORE-WATER"

Showing result 1 - 5 of 54 swedish dissertations containing the word PORE-WATER.

2. 1. Excess pore water pressure generation in fine granular materials under cyclic loading -A laboratory study

   Author : Tan Manh Do; Jan Laue; M. Kubilay Kelesoglu; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Excess pore water pressure; migration of particles; fine granular materials; cyclic loading; Soil Mechanics; Geoteknik;

   Abstract : Abstract Excess pore water pressure can be generated in subgrades of both railway and pavement sub-structures under cyclic loading caused by heavy traffic. When saturated subgrades are subjected to cyclic loading, excess pore water pressures accumulate over time which then could lead to migration of particles into overlying layers. READ MORE

4. 2. Dispersal and environmental impact of contaminants in organic rich, fibrous sediments of industrial origin in the Baltic Sea

   Author : Anna Apler; Ian Snowball; Karin Wiberg; Kevin Bishop; Sarah Josefsson; Lovisa Zillén; Ida-Maja Hassellöv; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Fiberbank; fiber-rich sediments; metals; persistent organic pollutants; pore water; bottom water; dispersal; sorption; pulp and paper; Natural Resources and Sustainable Development; Naturresurser och hållbar utveckling;

   Abstract : The health of the Baltic Sea is negatively affected by hazardous substances such as metals and persistent organic pollutants (POPs), which include legacy pollutants that were banned decades ago, but still circulate in the ecosystem. Elevated levels of legacy pollutants, identified by HELCOM as key hazardous substances, have been found in accumulations of fibrous sediments, so-called fiberbanks and fiber-rich sediments, which derive from old pulp mills along the Swedish north coast. READ MORE

5. 3. Contaminated organic sediments of anthropogenic origin: impact on coastal environments

   Author : Anna Apler; Ian Snowball; Sarah Josefsson; Lovisa Zillén; Magdalena Kuchler; Jonas Gunnarsson; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fiberbank; fiber-rich sediment; metals; persistent organic pollutants; pore water; bottom water; dispersal; sorption; pulp and paper; chemostratigraphy; Anthropocene; Natural Resources and Sustainable Development; Naturresurser och hållbar utveckling;

   Abstract : The Baltic Sea is negatively affected by legacy pollutants such as metals and persistent organic pollutants (POPs) that are known to have adverse effects on living organisms, including, humans and were banned decades ago. This thesis addresses the dispersal of these pollutants from heavily contaminated, cellulose-rich sediments of industrial origin in the Ångermanälven river estuary in northern Sweden. READ MORE

6. 4. Studies of actinides in a superanoxic fjord

   Author : Per Roos; Lund Medicinsk strålningsfysik; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Geology; colloids.; TIMS; pore water; remobilisation; sediments; ultrafiltration; uranium; thorium; americium; plutonium; Anoxic; Framvaren; fjord; physical geography; Geologi; fysisk geografi;

   Abstract : Water column and sediment profiles of plutonium, americium, thorium and uranium have been obtained in the superanoxic Framvaren fjord, southern Norway. The concentrations of bomb test fallout Pu, Am as well as 'dissolved' Th in the bottom water are the highest recorded in the marine environment. READ MORE

7. 5. Excess pore water pressure generation in crushed and fine granular materials under cyclic traffic loads

   Author : Tan Manh Do; Jan Laue; Hans Mattsson; Qi Jia; Ivo Herle; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Geoteknik; Soil Mechanics;

   Abstract : Excess pore water pressure can develop in subgrades of railway and pavement substructures due to cyclic loading from heavy traffic, leading to the migration of fine particles into upper layers. This migration can clog pores and diminish the drainage capacity of upper layers,negatively impacting the long-term performance of sub-structures and service life, ultimately risking failure. READ MORE