Sökning: "Water in nature and society"

Visar resultat 21 - 25 av 55 avhandlingar innehållade orden Water in nature and society.

  1. 21. Coupled Hydrological and Microbiological Processes Controlling Denitrification in Constructed Wetlands

    Författare :Johan Kjellin; Anders Wörman; Sara Hallin; Barbro Ulén; Björn Klöve; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Constructed wetland; Residence time; water flow modeling; denitrification rate; Tracer experiment; denitrifying bacteria community structure; Water in nature and society; Vatten i natur och samhälle;

    Sammanfattning : Treatment wetlands play an important role in reducing nitrogen content in wastewater and agricultural run-off water. The main removal process is denitrification and the removal efficiency depends on the hydrological and microbiological features of the wetland, especially in terms of water residence times and denitrification rates. LÄS MER

  3. 22. Arsenic in tubewell water of Bangladesh and approaches for sustainable mitigation

    Författare :Md. Jakariya; Prosun Bhattacharya; Jan Hoinkis; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Tubewell; Arsenic; field test kit; groundwater; sediment colour; local drillers; safe aquifer; people’s initiatives; Participatory GIS PGIS ; Water in nature and society; Vatten i natur och samhälle;

    Sammanfattning : There is an urgent need for Bangladesh to identify the arsenic (As) contaminated tubewells (TWs) in order to assess the health risks and initiate appropriate mitigation measures. This involves testing water in millions of TWs and raising community awareness about the health problems related to chronic As exposure from drinking water, and providing alternative safe water option for the exposed population of the country. LÄS MER

  4. 23. Freedom in a bottle : Young Swedes on rationales and norms for drunken behaviour

    Författare :Kalle Tryggvesson; Robin Room; Henrik Tham; Klaus Mäkelä; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Football supporters; time-out; alcohol; violence; vignette; intoxication; excuse; expectancy; Criminology; Kriminologi;

    Sammanfattning : There is today much evidence for a positive relationship between alcohol and violence. There are however still many questions about the nature of the relationship. LÄS MER

  5. 24. Forests and Greenhouse gases. Fluxes of CO2, CH4 and N2O from drained forests on organic soils

    Författare :Karin von Arnold; Leif Klemedtsson; Mats Nilsson; Björn Hånell; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Greenhouse gases; GHG; fluxes of CO2; CH4; drained forests; organic soils; Skogsbotanik; miljöaspekter; växthusgaser; Water in nature and society; Vatten i natur och samhälle;

    Sammanfattning : One of the largest environmental threats believed to be facing us today is global warming due to the accumulation of green house gases (GHG). The concentrations of GHG in the atmosphere are a result of the net strength of different sinks and sources. LÄS MER

  7. 25. Framing the Water Challenge : Multilateral donor policies for water supply and sanitation 1960-2005

    Författare :Anna Bohman; Lena Andersson-Skog; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Water Supply; Sanitation; Official Development Assistance; Institutional change; Problem Frames; Ghana; Private Sector Participation; Economic history; Ekonomisk historia;

    Sammanfattning : Opinions on what is best way to provide more people in low income countries with adequate water and sanitation services have changed over time. A recent policy paradigm suggests that private companies should be involved in WSS service provision to improve the situation for those in need. LÄS MER