Search for dissertations about: "Per-erik Jansson"

Showing result 11 - 15 of 24 swedish dissertations containing the words Per-erik Jansson.

  2. 11. The role of roads on hydrological response : Modeling and assessment for Swedish watersheds

    Author : Alireza Nickman; Per-Erik Jansson; Lars Rosen; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; GIS; Roads; Flooding; HEC-HMS; Sweden; Mark- och vattenteknik; Land and Water Resources Engineering;

    Abstract : Understanding the role of road networks in alteration of hydrological responses is crucial for maintaining the accessibility and durability of road infrastructures. Road construction is one of the most common man made disturbances to a landscape. READ MORE

  4. 12. Managing water according to river basins : Information management, institutional arrangements and strategic policy support - with focus on the EU Water Framework Directive

    Author : Susanna Nilsson; Per-Erik Jansson; Erik Mostert; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; River basin management; EU Water Framework Directive WFD ; River Basin Dis-tricts RBDs ; International cooperation; Indicators; Baltic Sea Region BSR ; Water in nature and society; Vatten i natur och samhälle;

    Abstract : Today, there is a general notion that water resources are best managed according to their river basins. River basin management may be approached from a wide variety of angles. This thesis focuses on information management, institutional arrangements and strategic policy support, with special reference to the EU Water Framework Directive (WFD). READ MORE

  5. 13. Soil Degradation of Raised-beds on Orchards in the Mekong Delta Field and Laboratory Methods

    Author : Quang Pham Van; Per-Erik Jansson; Khoa Le Van; Ingmar Messing; KTH; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; citrus orchards; nutrient; soil fertility; soil strength; soil degradation; alluvial soil; Mekong delta;

    Abstract : Soil degradation is a complex process which may occur anywhere and at any time. It directly affects the physical, chemical and biological processes within the soil profile. Soil degradation can either be as a result of natural hazards or due to manmade actions, such as mismanagement on cropping patterns, soil preparation and cultivation practices. READ MORE

  6. 14. On-site wastewater treatment : Polonite and other filter materials for removal of metals, nitrogen and phosphorus

    Author : Agnieszka Renman; Per-Erik Jansson; Lars D. Hylander; Gunno Renman; Björn Klöve; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; alkaline materials; heavy metals; mechanisms; nutrient removal; sorption; speciation modelling; Environmental engineering; Miljöteknik;

    Abstract : Bed filters using reactive materials are an emerging technology for on-site wastewater treatment. Chemical reactions transfer contaminants from the aqueous to the solid phase. Phosphorus is removed from domestic wastewater by sorption to filter materials, which can then be recycled to agriculture as fertilisers and soil amendments. READ MORE

  7. 15. Measurements for winter road maintenance

    Author : Mats Riehm; Per-Erik Jansson; Eros Pasero; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; winter road maintenance; sensors; infrared thermometry; energy efficiency; road salt;

    Abstract : Winter road maintenance activities are crucial for maintaining the accessibility and traffic safety of the road network at northerly latitudes during winter. Common winter road maintenance activities include snow ploughing and the use of anti-icing agents (e.g. road salt, NaCl). READ MORE