Sökning: "Kjell Sjöberg"

Hittade 5 avhandlingar innehållade orden Kjell Sjöberg.

  1. 1. Organic syntheses applicable to preparation of penicillins : synthetic uses of methylsulfinyl carbanion

    Författare :Kjell Sjöberg; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  3. 2. Temporal relationships between fish-eating birds and their prey in a north Swedish river

    Författare :Kjell Sjöberg; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Seasonal and diel activity; food consumption; predator-prey relationships; fish-eating birds; anadromous fish; Mergus merganser; M. serrator; Sterna spp.; Larus spp.; Lampetra fluviatilis; Gasterosteus aculeatus;

    Sammanfattning : The seasonal and diel feeding habits of the goosander, Mergus merganser, the red-breasted merganser, M. serrator, gulls (Larus canus, L. argentatus and L. fuscusj and terns, Sterna hirundo/paradisaea were studied at 64V05'N. LÄS MER

  4. 3. Detail Surveying with GPS

    Författare :Kjell Almgren; Lars Sjöberg; []
    Nyckelord :;

    Sammanfattning : Abstract In the past ten years, the Global Positioning System (GPS) has revolutionized navigation and positioning at or near the surface of the Earth. Even though it is developed and authorized by the US military forces, it has found a remarkable civilian use. In most uses of GPS, the position accuracy is in the order of metres. LÄS MER

  5. 4. Survival patterns and density-dependent processes in breeding mallards Anas platyrhynchos

    Författare :Gunnar Gunnarsson; Kjell Sjöberg; Johan Elmberg; Per Lundberg; Robert Clark; Högskolan Kristianstad; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; broods; dabbling ducks; density dependence; ducklings; experiments; models; mortality; nest predation; regulation; survival; Terrestrial ecology; Terrestrisk ekologi;

    Sammanfattning : Measuring and assessing vital rates such as births and deaths are prerequisites for understanding population dynamics. Vital rates may be affected by the density of individuals, even though the importance of density dependence on population dynamics has been debated for a long time. LÄS MER

  7. 5. Survival patterns and density-dependent processes in breeding mallards Anas platyrhynchos

    Författare :Gunnar Gunnarsson; Kjell Sjöberg; Johan Elmberg; Per Lundberg; Kristianstad University; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Measuring and assessing vital rates such as births and deaths are prerequisites for understanding population dynamics. Vital rates may be affected by the density of individuals, even though the importance of density dependence on population dynamics has been debated for a long time. LÄS MER