Sökning: "Lantbruksvetenskaper Lantbruksvetenskap"

Visar resultat 1 - 5 av 510 avhandlingar innehållade orden Lantbruksvetenskaper Lantbruksvetenskap.

  1. 1. Chlorine Cycling in Terrestrial Environments

    Detta är en avhandling från Linköping : Linköping University Electronic Press

    Författare :Malin Montelius; Linköpings universitet.; Linköpings universitet.; [2016]
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Chloride; organic chlorine; chlorination; dechlorination; 36Cl; risk assessment modelling; Klorid; organiskt klor; klorering; deklorering; klor-36; riskmodellering;

    Sammanfattning : Chlorinated organic compounds (Clorg) are produced naturally in soil. Formation and degradation of Clorg affect the chlorine (Cl) cycling in terrestrial environments and chlorine can be retained or released from soil. LÄS MER

  2. 2. Soil nitrogen fluxes and root uptake in the boreal forest

    Detta är en avhandling från Linköping : Linköping University Electronic Press

    Författare :Olusegun Ayodeji Oyewole; Sveriges lantbruksuniversitet.; [2015]
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Nitrogen (N) is essential for growth and net primary production of plants. However, N acquisition by plants is influenced by movement of soil N compounds from bulk soil to plant roots and uptake of N by roots. This thesis is aimed at deepening our knowledge on these key processes involved in plant N acquisition in the N-limited boreal forest. LÄS MER

  3. 3. Triterpenes and phenolic compounds in apple fruit (Malus domestica Borkh.)

    Detta är en avhandling från Linköping : Linköping University Electronic Press

    Författare :Yanrong Lv; Sveriges lantbruksuniversitet.; [2016]
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Apple (Malus × domestica Borkh.), a popular and widely cultivated fruit world-wide, contains bioactive triterpenes and phenolic compounds with potentially valuable pharmacological functions. This thesis investigated the effects of pre-harvest and postharvest factors on concentrations of these bioactive compounds in apples. LÄS MER

  4. 4. Natural and human-made capital interdependencies in fisheries : examples from the Baltic Sea

    Detta är en avhandling från Stockholm : Stockholm University

    Författare :Monica Hammer; Stockholms universitet.; [1994]
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Östersjön;

    Sammanfattning : .... LÄS MER

  5. 5. The function of seasonal habitat shifts in two congeneric mayflies in a boreal river

    Detta är en avhandling från Umeå : Umeå universitet

    Författare :Olle Söderström; Umeå universitet.; [1988]
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Habitat utilization; diel activity; orientation; predation; life-history; temperature; food quality; mayflies; Parameletus chelifer; Parameletus minor;

    Sammanfattning : Unregulated North Swedish rivers show large seasonal variations in their physical characteristics. During winter the whole littoral zone freezes solid, and in spring the water flow increases rapidly and the same areas become flooded. The two mayflies Parameletus chelifer and P. minor are common in the North Swedish river Vindelälven. LÄS MER