Sökning: "sediment"

Visar resultat 1 - 5 av 656 uppsatser innehållade ordet sediment.

  1. 1. Loess in southwestern Sweden. Determining the genesis of the silt-rich layer rödfemman in Svartedalen nature reserve

    Master-uppsats, Göteborgs universitet/Institutionen för geovetenskaper

    Författare :Fanny Ekström; Anna Hedeving; [2021-10-28]
    Nyckelord :Loess; silt; grain-size distribution; bimodal; Optically Stimulated Luminescence OSL ; p-XRF; spatial distribution; paleowind;

    Sammanfattning : The presence of loess in Sweden is relatively unexplored and has only been found in a fewplaces. Loess acts as a paleoclimatic proxy, which in times of changing climates, is highlyrelevant. LÄS MER

  2. 2. Variations in depositional environments of the Paleogene Firkanten Formation across Adventdalen, from Operafjellet to Breinosa

    Master-uppsats, Göteborgs universitet/Institutionen för geovetenskaper

    Författare :Anna Stella Guðmundsdóttir; [2021-03-18]
    Nyckelord :;

    Sammanfattning : The lowermost Paleogene clastic infill of the Central Spitsbergen Tertiary Basin, the coal bearing FirkantenFormation, has been the subject of study for researchers in the past but little focus has been on thenortheast edge of the basin until now. Due to the economic potential of the coal seams in the formation,the Norwegian mining company, Store Norske Spitsbergen Grubekompani (SNSG), has for several yearsconducted core drilling in key locations in basin, and for decades, they have given an access to their corematerial to researchers. LÄS MER

  3. 3. Alkaline Protein Extraction of Oat Bran and Oat Endosperm Flour - the Effect of pH during Extraction and Precipitation

    Master-uppsats, Lunds universitet/Livsmedelsteknik och nutrition (master)

    Författare :Bella Nielsen; Alva Rodhe; [2021]
    Nyckelord :Oats; Protein; Alkaline extraction; Protein extraction; Plant-based proteins; Oat protein; Oat bran; Oat endosperm; Iso-electric precipitation; Food engineering; Technology and Engineering; Agriculture and Food Sciences;

    Sammanfattning : An increased understanding of the negative impacts of animal-based proteins, on both environment and health, has led to a rise in the demand for plant-based proteins. To meet the demands, conventional crops must be efficiently utilized. LÄS MER

  4. 4. Riparian buffer zones in agricultural landscapes : Their status today and their future as an ecological tool in Sweden

    Master-uppsats, Karlstads universitet

    Författare :Mikaela Ignatiou Hadjicharalambous; [2021]
    Nyckelord :Riparian buffer zones; agriculture lanscapes; ecological tool; streams; kantzoner; lantbrukslandskap; ekologisk vertyg; vattendrag;

    Sammanfattning : The application of intensive farming and cultivation practices, resulting in large-scale modification of the hydrology of streams and rivers and of the natural vegetation, has increased the need to find ways to mitigate the negative impact of this habitat degradation. Suitable design and creation of riparian buffer zones in agriculture areas, is by many considered the best remedial measure. LÄS MER

  5. 5. Väder- och klimatförändringars effekter på produktivitet och sedimentation i en boreal sjö

    Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Albin Eriksson; [2021]
    Nyckelord :Chlorophyll; Climate-change; Paleolimnology; Sediment traps; Freeze-coring; Klorofyll; Klimatförändringar; Paleolimnologi; Sedimentfällor; Frysproppar;

    Sammanfattning : This report aimed to investigate how chlorophyll-concentrations (Chl-a) in the water column and varved sediments were affected by changes in air temperature and precipitation and consequently how climate change will affect the sedimentation and productivity in boreal aquatic ecosystems. VRS (visible-reflectance-spectroscopy) was used to asses Chl-a and its derivates in sediment trap samples between 2002-2021 and in a series of freeze cores (1979-2021) from lake Nylandssjön, with annually laminated sediments. LÄS MER