Sökning: "Anders Nordin"

Visar resultat 6 - 10 av 17 avhandlingar innehållade orden Anders Nordin.

  1. 6. Low social support and disturbed sleep : epidemiological and psychological perspectives

    Författare :Maria Nordin; Anders Knutsson; Elisabet Sundbom; Steven Linton; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; social support; sleep initiation and maintenance disorder; psychological adaptation; myocardial infarction; social psychology; public health; mental health; occupational health; epidemiology; cohort studies; Public health science; Folkhälsovetenskap;

    Sammanfattning : The Swedish work force underwent dramatic changes during an economic crisis in the 1990s. In the aftermath, sick leave increased at an unprecedented rate and stress-related disorders, such as burnout, depression, and sleep disturbances replaced earlier work-related diagnoses. LÄS MER

  3. 7. Particulate and gaseous emissions from residential biomass combustion

    Författare :Christoffer Boman; Anders Nordin; Ingwald Obernberger; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; aerosols; air pollution; emissions; fuel pellets; residential biomass combustion; inorganic characterization; incomplete combustion; particulate matter; polycyclic aromatic hydrocarbons; trace elements; Kemi; Chemistry; Kemi;

    Sammanfattning : Biomass is considered to be a sustainable energy source with significant potentials for replacing electricity and fossil fuels, not at least in the residential sector. However, present wood combustion is a major source of ambient concentrations of hydrocarbons (e.g. LÄS MER

  4. 8. Urbanism Under Sail : An Archaeology of Fluit Ships in Early Modern Everyday Life

    Författare :Niklas Eriksson; Johan Rönnby; Anders Andrén; Jonas Nordin; Södertörns högskola; []
    Nyckelord :HUMANIORA; HUMANITIES; Seventeenth century; Urbanism; Shipwrecks; Historical; Historical Studies; Historiska studier; Östersjö- och Östeuropaforskning; Baltic and East European studies;

    Sammanfattning : In the seventeenth- and early eighteenth centuries, fluits were the most common type of merchant ship used in Baltic trade. Originally a Dutch design, the majority of all goods transported between Sweden and the Republic was carried on board such vessels. Far from all voyages reached their destination. LÄS MER

  5. 9. Co-firing animal waste, sludge, residue wood, peat and forest fuels in a 50MWth CFB boiler : ash transformation, availability and process improvements

    Författare :Henrik Hagman; Dan Boström; Rainer Backman; Anders Nordin; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Co-combustion; animal waste; peat; waste wood; forest residues; industrial sludge; limestone; CFB boiler; ash transformation; corrosion; erosion; ash and deposit characteristics; deposit buildup; boiler failures; availability; sulfation; boiler design; boiler conversion; waste derived fuels; large scale; Samförbränning; animaliskt avfall; torv; returträ; skogsbränsle; reningsslam; askomvandling; korrotion; erosion; ask- och beläggnings-karaktäristik; beläggningstillväxt; tillgänglighet; sulfatisering; panndesign; pannkonvertering; avfallsderiverade bränslen; storskalig;

    Sammanfattning : The direct variable costs for heat and electricity production based on solid biomass fuel combustion is approximately 3-5 times lower than the costs in a fossil fuel-oil based boiler in Sweden. In addition waste derived biomass fuels are typically much cheaper than biomass not classified as waste. LÄS MER

  7. 10. Fate of Cu, Cr, As and some other trace elements during combustion of recovered waste fuels

    Författare :Karin Lundholm; Anders Nordin; Britt-Marie Steenari; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; combustion; chemical equilibrium model calculations; trace elements; impregnated wood; waste; thermodynamic data; Cu; Cr; As; Other chemistry; Övrig kemi;

    Sammanfattning : The increased use of biomass and recovered waste fuels in favor of fossil fuels for heat and power production is an important step towards a sustainable future. Combustion of waste fuels also offers several advantages over traditional landfilling, such as substantial volume reduction, detoxification of pathological wastes, and reduction of toxic leaches and greenhouse gas (methane) formation from landfills. LÄS MER