Sökning: "benzo a pyrene"
Visar resultat 21 - 25 av 44 avhandlingar innehållade orden benzo a pyrene.
21. Development of Mild Methods for Selective Covalent Functionalization of Graphene
Sammanfattning : This thesis discusses methods for the comparatively mild covalent functionalization of graphene. Several graphene models were investigated: polycyclic aromatic hydrocarbons (PAHs), chemical vapor deposition (CVD)-graphene on SiO2/Si substrate, graphite foil, graphite flakes, kish graphite and highly oriented pyrolytic graphite. LÄS MER
22. Isolation and characterization of glutathione S-transferases from various animal sources
Sammanfattning : In the present investigation several forms of glutathione S-transferase were found in preparations of rat liver, rat lung, adult human liver, fetal human liver and whole earthworms. Human placenta, however, appeared to contain only one form of glutathione S-transferase. LÄS MER
23. Supernucleophilic Cob(I)alamin : analytical tool for genotoxic compounds in vitro and in vivo
Sammanfattning : The low but still non-acceptable levels of exposure to genotoxic compounds emphasises the need for sensitive methods for searching, detecting, identifying and quantifying these compounds. Within the field of studies on genotoxic compounds, chemically quantitative work is required throughout. LÄS MER
24. Factors Influencing the Yield of Mutations Induced by Polycyclic Aromatic Hydrocarbons in Mammalian Cells
Sammanfattning : Environmental contaminants are ubiquitously present in the urban environment, this has the implication that humans are exposed to toxic and carcinogenic chemicals. Polycyclic aromatic hydrocarbons (PAH) are one type of environmental contaminants, which are produced by combustion of organic compounds. LÄS MER
25. Laccases from New Fungal Sources and Some Promising Applications
Sammanfattning : Fungi are a group of organisms with the ability to produce different types of enzymes in order to get access to nutrients. Among the enzymes, oxidoreductases have the ability to degrade lignocellulosic material via an oxidative mechanism, facilitating the uptake of cellulosic material, which will be metabolized using other enzymes to provide the required nutrients to the fungi. LÄS MER