Sökning: "feeder"

Visar resultat 1 - 5 av 43 avhandlingar innehållade ordet feeder.

  1. 1. The importance of biodiversity for ecosystem processes in sediments : experimental examples from the Baltic Sea

    Författare :Johan Näslund; Jonas Gunnarsson; Sara Sjöling; Nils Kautsky; Antoine Grémare; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biodiversity; Soft-bottom sediment; Ecosystem processes; Ecosystem function; Benthic-pelagic coupling; Baltic Sea; Trophic interactions; Pollutant biodegradation; Organic matter mineralization; Deposit feeder; Detritivore; Invasive species; Marine ecology; Marin ekologi; marin ekotoxikologi; Marine Ecotoxicology;

    Sammanfattning : Aquatic sediments are, by surface, the largest habitat on Earth. A wide diversity of organisms inhabit these sediments and by their actions they have a large influence on and also mediate many ecosystem processes. LÄS MER

  3. 2. Derivation, Characterization and Differentiation of Feeder-Free Human Embryonic Stem Cells

    Författare :Narmin Bigdeli; Göteborgs universitet; []
    Nyckelord :Embryonic Stem Cells; Differentiation;

    Sammanfattning : Human embryonic stem cells (hESCs) are pluripotent cells with self-renewal ability, derived from the inner cell mass of a human blastocyst. They have the remarkable potential to develop into different cell types and can thus be used to regenerate and restore damaged tissues and organs in the entire body. LÄS MER

  4. 3. Steady State Operation and Control of Power Distribution Systems in the Presence of Distributed Generation

    Författare :Ferry Viawan; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; distance protection; stochastic assessment; voltage dip; line drop compensation; distribution systems; on-load tap changer; overcurrent protection; sensitive equipment; voltage dip immunity; voltage control; short circuit; reactive power control; pilot protection.; protection coordination; protection; Distributed Generation; losses;

    Sammanfattning : In this thesis, the impact of distributed generation (DG) on steady state operation and control of power distribution systems is investigated. Over the last few years, a number of factors have led to an increased interest in DG schemes. DG is gaining more and more attention worldwide as an alternative to large-scale central generating stations. LÄS MER

  5. 4. Reliability Evaluation of Distribution ArchitecturesConsidering Failure Modes and Correlated Events

    Författare :Sajeesh Babu; Patrik Hilber; Hans Kristian Høidalen; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Power systems are in a phase of automation where intelligent components and sub-systems are employed to monitor, control and manage the grid. Quantifying the complex consequences on system reliability, from the integration of such automated and semi-automated equipment into the existing grid is important for maintenance optimisation and fault mitigation. LÄS MER

  7. 5. Time and energy in long-distance bird migration

    Författare :Thord Fransson; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; zoologi; Zoology;

    Sammanfattning : Long-distance seasonal migration is energetically demanding and time consuming. For example, some passerine birds are on migration during six months of the year, travel more than 10 000 km and make use of many fuelling sites. Migration requires many different decisions, and an individual bird will face a variety of situations. LÄS MER