Sökning: "polycyclic aromatic hydrocarbon"

Visar resultat 11 - 15 av 23 avhandlingar innehållade orden polycyclic aromatic hydrocarbon.

  1. 11. Chemical and bioanalytical characterisation of PAH-contaminated soils : identification, availability and mixture toxicity of AhR agonists

    Författare :Maria Larsson; Magnus Engwall; Jessika Hagberg; Peter Haglund; Örebro universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Polycyclic aromatic compounds; Soil; Risk assessment; Mixture studies; AhR-mediated activity; REPs; GC MS; H4IIE-luc bioassay; Chemistry; Kemi;

    Sammanfattning : Contaminated soils are a worldwide problem. Polycyclic aromatic hydrocarbons (PAHs) are common contaminants in soil at former industrial areas, especially at old gasworks sites, gas stations and former wood impregnation facilities. LÄS MER

  3. 12. A mechanistic description of the evolution of aromatic tar during catalytic upgrading of the raw gas produced from biomass steam gasification

    Författare :Huong Nguyen; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; biomass gasification; raw gas; catalytic raw gas upgrading; ilmenite; kinetic model; tar;

    Sammanfattning : The removal of tar from the raw gas produced during biomass gasification is a prerequisite for the viability of the process downstream of the gasifier. The tar, the composition of which is dominated by aromatics, readily condenses, leading to process disruption. LÄS MER

  4. 13. Xenobiotic-metabolizing enzymes and enzymes involved in the metabolism of reactive oxygen species in the porcine ovary : subcellular distributions and levels of expression during follicular maturation and in the non-pregnant and pregnant corpus luteum

    Författare :Maria Eliasson; Thomas Friedberg; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; biokemi; Biochemistry;

    Sammanfattning : The polycyclic aromatic hydrocarbon (PAH) 7,12-dimethylbenz(a)anthracene (DMBA) is metabolized by both porcine ovarian microsomes and mitochondria, with the highest activity being seen in the corpus luteum. Microsomal DMBA monooxygenase activity is inhibited by inhibitors of the CYP450 system and by 17-bestradiol, thus indicating involvement of CYP1B1. LÄS MER

  5. 14. Congenital heart disease, genetic syndromes, and childhood cancer

    Författare :Christina-Evmorfia Kampitsi; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Childhood cancer is a diverse group of rare diseases and remains a significant global concern, despite substantial improvements in survival outcomes. Yet, little is known about its etiology. LÄS MER

  7. 15. Ions colliding with molecules and molecular clusters : fragmentation and growth processes

    Författare :Tao Chen; Henrik Cederquist; Hutton Roger; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; PAH; H2; C60; fragmentation; fysik; Physics;

    Sammanfattning : In this work we will discuss fragmentation and molecular growth processes in collisions of Polycyclic Aromatic Hydrocarbon (PAH) molecules, fullerenes, or their clusters with atoms or atomic ions. Simple collision models as well as molecular structure calculations are used to aid the interpretations of the present and other experimental results. LÄS MER