Sökning: "sand 2000"

Visar resultat 1 - 5 av 10 avhandlingar innehållade orden sand 2000.

  1. 1. Long-term set-up of driven piles in sand

    Författare :Gary Axelsson; KTH; []
    Nyckelord :driven piles; shaft capacity; instrumentation; sand; set-up; torque; loading tests; soil ageing; time effects; driven rods; dynamic probing;

    Sammanfattning : .... LÄS MER

  3. 2. Adsorption and reclamation of wastewater nitrogen and the value of human urine as a nitrogen fertiliser

    Författare :Annelie Hedström; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; VA-teknik; Urban Water Engineering;

    Sammanfattning : Ammonium adsorption and ammonium ion exchange technique are possible alternatives for ammonium reclamation at conventional wastewater treatment plants. There are a few ion exchange applications that have been suggested for nitrogen reclamation, which can be further developed. LÄS MER

  4. 3. Influence of ice-cover on local scour at circular bridge piers : an experimental study

    Författare :Peter Olsson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Vattenteknik; Water Resources Engineering;

    Sammanfattning : The objective of this work has been to investigate the effect of a simulated ice cover on the local scour depth around a cylindrical pier. Experiments were performed in a laboratory flume for different flow velocities with both a smooth and rough cover. The bed material consisted of uniform ripple-forming sand. LÄS MER

  5. 4. Processing Aspects for Improving Mechanical Properties in Aluminium Castings

    Författare :Jonas Bäckman; Linköpings universitet; []
    Nyckelord :Aluminium; microstructure; mechanical properties; gradient solidification; mould filling; filter; filter parameter; casting simulation; TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : The relation between the process and mechanical properties in aluminium alloys for castings has been examined. The relation was hard to define since the spread in data was severe due to defects created in the casting process. To avoid such defects a gradient solidification equipment was built. LÄS MER

  7. 5. Climatic signals and frequencies in the Swedish Time Scale, River Ångermanälven, Central Sweden

    Författare :Mikkel Sander; Kvartärgeologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; marklära; kartografi; klimatologi; pedology; cartography; climatology; Fysisk geografi; geomorfologi; geomorphology; Physical geography; winter precipitation; climate change; central Sweden; last 2000 year; discharge; varve;

    Sammanfattning : Any future climate variation forced by human activities will be superimposed on the background of natural climate variation. Therefore, before interpreting the present climate and addressing future climate scenarios some knowledge of past climate is necessary. LÄS MER