Sökning: "Fysikalisk biologi"

Visar resultat 1 - 5 av 11 avhandlingar innehållade orden Fysikalisk biologi.

  1. 1. Biomarkers aiming at cancer risk estimation of polycyclic aromatic hydrocarbons

    Detta är en avhandling från Stockholm : Stockholm University

    Författare :Hans Helleberg; Kimmo Peltonen; [2001]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physical Biology; fysikalisk biologi;

    Sammanfattning : Polycyclic aromatic hydrocarbons (PAH), a family of compounds that are formed in incomplete combustion of organic matter, occur as general pollutants in air and food. Exposure to PAH is, according to preliminary estimates, associated with non-acceptable cancer risks showing the need for improved data to be used in risk estimation. LÄS MER

  2. 2. Modern Computational Physical Chemistry An Introduction to Biomolecular Radiation Damage and Phototoxicity

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Jorge Llano; Leif A. Eriksson; Ulf Ryde; [2004]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; statistical mechanics; biophysical chemistry; interface; surface thermodynamics; bioelectrochemistry; ionizing radiation; radiation therapy; condensed matter; computational chemistry; nucleic acids; radiation damage; electrode potential; electronic transport; photochemistry; strand break; photodynamic action; cytostatic; solvation; solvated electron; absolute potential; chemical potential; Biologi; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi;

    Sammanfattning : The realm of molecular physical chemistry ranges from the structure of matter and the fundamental atomic and molecular interactions to the macroscopic properties and processes arising from the average microscopic behaviour.Herein, the conventional electrodic problem is recast into the simpler molecular problem of finding the electrochemical, real chemical, and chemical potentials of the species involved in redox half-reactions. LÄS MER

  3. 3. Quantum Chemical Studies of Aromatic Substitution Reactions

    Detta är en avhandling från Stockholm : Universitetsservice US AB, Stockholm

    Författare :Magnus Liljenberg; Tore Brinck; Leif Eriksson; [2017]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Theoretical Chemistry and Biology; Teoretisk kemi och biologi;

    Sammanfattning : In this thesis, density functional theory (DFT) is used to investigate the mechanisms and reactivities of electrophilic and nucleophilic aromatic substitution reactions (SEAr and SNAr respectively). For SEAr, the σ-complex intermediate is preceded by one (halogenation) or two (nitration) π-complex intermediates. LÄS MER

  4. 4. Biogenesis of messenger and ribosomal RNPs in the eukaryotic cell

    Detta är en avhandling från Stockholm : Department of Molecular Biology and Functional Genomics, Stockholm University

    Författare :Petra Björk; Juan Valcárcel; [2003]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES Biology Cell and molecular biology Molecular biology; NATURVETENSKAP Biologi Cell- och molekylärbiologi Molekylärbiologi; Physical Biology; fysikalisk biologi;

    Sammanfattning : In eukaryotic cells, gene expression involves multi-step processes in the nucleus and the cytoplasm. The different processes engage specific RNA-protein complexes, RNPs. Upon activation of most, if not all genes, a precursor RNA molecule is synthesized that has to be extensively processed and modified. LÄS MER

  5. 5. DNA repair and genome organisation in mammalian cells : studies involving single-cell electrophoresis

    Detta är en avhandling från Stockholm : Stockholm University

    Författare :Stefan Eriksson; Bert van Zeeland; [2000]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physical Biology; fysikalisk biologi;

    Sammanfattning : The comet assay (single-cell electrophoresis) is a comparably new method for measurement of DNA strand breakage, primarily in eukaryotic cells. Its main advantage is that it works on the single-cell level, making it possible to detect heterogeneity in DNA damage induction and repair. LÄS MER