Sökning: "broms"

Visar resultat 11 - 15 av 19 avhandlingar innehållade ordet broms.

  1. 11. Broms och inlärning : tjänstemän i Västerås planerar ett bostadsområde

    Författare :Christer Lindgren; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Samhällsplanering; Sverige; Västerås;

    Sammanfattning : .... LÄS MER

  3. 12. Railway Open System Tribology

    Författare :Yezhe Lyu; Ulf Olofsson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wheel; Rail; Brake; Environmental conditions; Tribology; Noise; Particle; Hjul; Räl; Broms; Miljöförhållanden; Tribologi; Ljud; Partiklar; Machine Design; Maskinkonstruktion;

    Sammanfattning : Tribology in the railway system is of increasing interest in the new railway era due to the demand for higher speed and load capacity. Since railway vehicles operate in an open environment, their performance depends greatly on temperature, humidity and natural and artificial contaminants. LÄS MER

  4. 13. Issues of validity in longitudinal studies of youth tobacco use

    Författare :Ann Post; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Cohort; validity; smoking; smokeless tobacco; adolescents; participation; consent; retrospective reports; nicotine dependence; attrition;

    Sammanfattning : In the Stockholm region, a prospective longitudinal study: BROMS Cohort Study (Children s Smoking and Environment in the Stockholm County) was conducted between 1997 and 2005, with the primary aim to investigate determinants of adolescents´ tobacco use. It was based on a sample recruited in schools with junior high grades. LÄS MER

  5. 14. Modeling individual behavioral changes : the case of tobacco uptake in a cohort of school children

    Författare :Ingvar Rosendahl; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The aim of this thesis was to elucidate preventable determinants of smoking and smokeless tobacco use in adolescence in the frame of a longitudinal study (BROMS cohort). The study population encompasses 3019 children recruited from 5th grade classes in 96 schools in Stockholm, Sweden during the academic year 1997-1998. LÄS MER

  7. 15. Pyrolysis and Detoxification of Waste Electrical and Electronic Equipment (WEEE) for Feedstock Recycling

    Författare :Panagiotis Evangelopoulos; Weihong Yang; Efthymios Kantarelis; Tobias Richards; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Pyrolysis; WEEE; solvent extraction; brominated flame retardants; Tetrabromobisphenol A; Auger reactor; Πυρόλυση; ΑΗΗΕ; εκχύλιση με διαλύτη; βρωμιωμένα επιβραδυντικά φλόγας; Τετραβρωμοδιφαινόλη Α; Pyrolys; WEEE; lösningsmedelsextraktion; bromerade flamskyddsmedel; tetrabrombisfenol A; Teknisk materialvetenskap; Materials Science and Engineering;

    Sammanfattning : The trends in waste electrical and electronic equipment (WEEE) generation shows that their volume constantly increases, while the current waste management technologies have proven to be insufficient in order to meet the strict criteria and the new legislations of the European Union. Pyrolysis and thermal treatment in general could be a valuable solution for closing the loop of materials and could contribute to the energy demands of modern society. LÄS MER