Search for dissertations about: "nitrogen indicator"

Showing result 21 - 25 of 27 swedish dissertations containing the words nitrogen indicator.

  2. 21. Small Sanitation Systems – Treatment Efficiency, Sustainability and Implementation

    Author : Brenda Vidal; Annelie Hedström; Inga Herrmann; Günther Langergraber; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Sustainable sanitation; sand filter; phosphorus filter; package plant; cold climate; treatment process; system analysis; sustainability indicators; decentralization; centralization; historical development; on-site; resource recovery; source separation; source-separating systems; blackwater; urine; greywater; hållbarthetsanalys; små avlopp system; enskilda avlopp; markbädd; minireningsverk; kallt klimat; systemanalys; fosforfälla; fosforfilter; indikator; urin sortering; svartvatten; toalettvatten; gråvatten; BDT; VA-teknik; Urban Water Engineering;

    Abstract : Current socio-technical wastewater system paradigms are being challenged by emerging global issues such as climate change, environmental degradation and scarcity of resources. Thus, exploration of innovative new urban water management solutions is required that enable closure of resource loops. READ MORE

  4. 22. Exposure to motor exhaust in the occupational and general environment in Stockholm county

    Author : Marie Lewné; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Exposure measurement; NO2; Particles; EC; diesel exhaust;

    Abstract : In recent years, health hazards associated with air pollution from motor exhaust have received increasing attention. Lung cancer and heart disease have been linked to air pollution exposure. However, the knowledge concerning exposure levels, is insufficient, but is essential for risk assessment. READ MORE

  5. 23. Prehistoric diet transitions : an archaeological perspective

    Author : Kerstin Lidén; Stockholms universitet; []
    Keywords : HUMANIORA; HUMANITIES;

    Abstract : This is a study of prehistoric diet transitions within the Baltic area during the Stone Age. More specific the changes in diet expected to be found when hunter-gatherer subsistence is changed into a farming subsistence. This transition should be able to detect in the bone material as changes in trace element amounts and changes in stable isotopes. READ MORE

  6. 24. Respiratory symptoms and lung function in foundry workers exposed to low molecular weight isocyanates

    Author : Håkan Löfstedt; Karolinska Institutet; Karolinska Institutet; []
    Keywords : formaldehyde;

    Abstract : Background: Some foundries use the Hot Box method, which involves use of a nitrogen-containing binder system to produce cores for hollow castings. During the process, low molecular weight isocyanates such as isocyanic acid (ICA) and methyl isocyanate (MIC) are formed, which are potentially toxic. READ MORE

  7. 25. Performance of on-site systems and a green wall for greywater treatment

    Author : Mashreki Sami; Annelie Hedström; Elisabeth Kvarnström; Inga Herrmann; Sahar Dalameh; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; VA-teknik; Urban Water Engineering;

    Abstract : Greywater contains inorganic and organic substances, nutrients, pathogens, micropollutants and microplastics. Source-separated greywater using decentralized systems can potentially provide energy-efficient and low-maintenance treatment. READ MORE