Sökning: "rain pH"

Visar resultat 11 - 15 av 20 avhandlingar innehållade orden rain pH.

1. 11. Road runoff quality in cold climates

   Författare :Camilla Westerlund; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; VA-teknik; Urban Water Engineering;

   Sammanfattning : The main objective of the doctoral thesis was to investigate the complex processes and influencing factors affecting snowmelt-induced runoff and snowmelt quality in a cold climate under wintry conditions compared to non- winter conditions in areas with a warmer climate. In order to improve the understanding and knowledge of road-runoff quantity, quality and pollutant transport, snowmelt and rainfall runoff were studied and characterized in the laboratory and in the field, respectively. LÄS MER

3. 12. Nutrient and Organic Matter Dynamics in Beech Forest Floors, in Relation to the Presence of Ground Flora

   Författare :Frida Andréasson; Biologiska institutionen; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; bioavailability; mineralisation; soil acidity; soil matrix solution; soil leachate; nitrate; ammonia; dissolved organic carbon; beech; Ground flora; forest floor; O horizon; A horizon; Plant ecology; Växtekologi;

   Sammanfattning : The objective of this thesis was to quantify differences between adjacent patches with and without ground flora of Deschampsia flexuosa L. Trin or Anemone nemorosa L. in two acid European beech (Fagus sylvatica L.) forest floors in south-west of Sweden. LÄS MER

4. 13. Accelerate ageing of refuse-derived-fuel (RDF) fly ashes

   Författare :Evelina Brännvall; Britt-Marie Steenari; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Waste Science and Technology; Avfallsteknik;

   Sammanfattning : Ashes have properties that can be exploited in various applications, e.g. some ashes can be used in the construction of barriers in a landfill final top cover. LÄS MER

5. 14. The CRACKER Program and Modelling of Äspö Groundwater Chemistry

   Författare :Allan Emrén; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : A sufficiently accurate understanding of groundwater chemistry and interactions between minerals and groundwater is of fundamental importance for performance assessment in connection with a repository for nuclear waste. Here, a model is described, which has been able to give agreement between observed and modelled values for more than ten element concentrations (including pH and pE values). LÄS MER

7. 15. From precipitation to stream : isotopic insights into hydrological flow paths and transit times in boreal catchments

   Författare :Andres Peralta Tapia; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : Understanding the journey water makes from precipitation entering a catchment, traveling through soils, and the time it takes before it exits as stream water are questions of great relevance for both scientists and environmental managers. Natural stable isotopes such as δ¹⁸O and δ²H have been extensively used over the last decades to trace water through diverse catchments across the world. LÄS MER