Sökning: "Organic Food"

Visar resultat 16 - 20 av 243 avhandlingar innehållade orden Organic Food.

  1. 16. Molecular-level dissolved organic matter dynamics in lakes : Constraints on reactivity and persistence

    Författare :Anne Marie Kellerman; Lars J. Tranvik; Dolly N. Kothawala; Thorsten Dittmar; Robert G. M. Spencer; Uppsala universitet; []
    Nyckelord :dissolved organic matter; DOM; dissolved organic carbon; organic matter characterization; fluorescence; PARAFAC; molecular weight; mass spectrometry; FT-ICR-MS; boreal lakes; Biology with specialization in Limnology; Biologi med inriktning mot limnologi;

    Sammanfattning : Dissolved organic matter (DOM) is a central component of the global carbon cycle. Thus, small changes to the amount of DOM imported, processed and produced within lakes can have a large effect on regional carbon budgets. In addition to being a vital energy source at the base of the aquatic food web, DOM is physico-chemically reactive. LÄS MER

  3. 17. Food and Rank in Early Medieval Time

    Författare :Sven Isaksson; Dr Carl Heron; Stockholms universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; food culture; power resources; soil-organic matter; ancient biomolecules; trace metal elements; pottery-use; Early Medieval Period; Archaeology; Arkeologi; Archaeological Science; laborativ arkeologi;

    Sammanfattning : .... LÄS MER

  4. 18. Optimisation and modelling of aroma recovery by pervaporation

    Författare :Jenny Olsson; Livsmedelsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Food and drink technology; optimisation; mass transfer; modelling; pervaporation; aroma recovery; Livsmedelsteknik;

    Sammanfattning : During production of concentrated fruit juices, both physical and chemical losses of aroma compounds occur due to heat treatment such as pasteurisation and evaporation. This leads to an inferior quality of the final product. LÄS MER

  5. 19. Tools for Evaluating the Fate and Bioaccumulation of Organic Compounds in Aquatic Ecosystems

    Författare :Erick Nfon; Ian Cousins; Jan Hendriks; Stockholms universitet; []
    Nyckelord :Baltic Sea; Biomagnification; Exposure; Food web; Fugacity model; Stable isotopes; Organic contaminants; NATURAL SCIENCES; NATURVETENSKAP; Applied Environmental Science; tillämpad miljövetenskap;

    Sammanfattning : The bioaccumulation of organic contaminants in aquatic ecosystems has been a key focus in environmental toxicology over the last decades. Bioaccumulation is a key concept in ecological risk assessments since it controls the internal dose of potential environmental contaminants. LÄS MER

  7. 20. Effects of inorganic nitrogen and organic carbon on pelagic food webs in boreal lakes

    Författare :Anne Deininger; Ann-Kristin Bergström; Jan Karlsson; Antonia Liess; Carolyn L. Faithfull; John A. Downing; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; autochthony; basal production; boreal; global change; dissolved organic carbon; food web efficiency; N deposition; phytoplankton; seston stoichiometry; whole lake enrichment; zooplankton; limnologi; Limnology;

    Sammanfattning : Anthropogenic activities are increasing inorganic nitrogen (N) loadings to lakes in the northern hemisphere. In many boreal lakes phytoplankton are N limited, wherefore enhanced N input may affect the productivity of pelagic food webs. LÄS MER