Sökning: "elektrontransport"

Visar resultat 1 - 5 av 11 avhandlingar innehållade ordet elektrontransport.

  1. 1. Electron transport in microbial chlorate respiration

    Författare :Anna Smedja Bäcklund; Thomas Nilsson; Åke Strid; Karlstads universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; c cytochromes; chlorate reduction; electron transport; c cytokromer; kloratreduktion; elektrontransport; Biochemistry; Biokemi; Kemi; Chemistry;

    Sammanfattning : Several bacterial species are capable to use perchlorate and/or chlorate as an alternative electron acceptor in absence of oxygen. Microbial respiration of oxochlorates is important for biotreatment of effluent from industries where oxochlorates are produced or handled. LÄS MER

  3. 2. Ultrafast Dynamics in Ground and Excited States of Porphyrin Molecules

    Författare :Peter Martinsson; Kemisk fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; intra- and intermolecular dynamics.; Zn-porphyrin; bacteriochlorophyll a; chlorophyll b; Femtosecond transient absorption spectroscopy; chlorophyll a; Physical chemistry; Fysikalisk kemi;

    Sammanfattning : This thesis describes inter and intramolecular dynamics in porphyrin molecules. To create a basis for understanding the energy and electron transfer processes in photosynthesis, the ultrafast dynamics of monomeric chlorophyll a, chlorophyll b and bacteriochlorophyll a were studied with ultrashort laser pulses. LÄS MER

  4. 3. Characterization of folding dynamics and accelerated electron transfer in proteins

    Författare :Anna Katrine Museth; Linköpings universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : The research presented in this thesis is divided in two: The first part is a study of the intracellular protein human copper zinc superoxide dismutase which has been associated with the fatale disease Amyotrophic lateral Selerosis (ALS). ALS is a progressive neurodegenerative disease of motor neurons, and in the cases where the disease is inheriled (fALS), roughly 15% is caused by mutations in human copper·zinc superoxide dismutase (CuZnSOD). LÄS MER

  5. 4. Collective Excitation Dynamics in Molecular Aggregates

    Författare :Mats Dahlbom; Kemisk fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Kemi; Fysik; Physics; computational methods; photosynthesis; femtosecond spectroscopy; Exciton; Polaron;

    Sammanfattning : The aim of this thesis is to study collective excitation dynamics in molecular aggregates. Half of the work presented here is method development and the remainder is application of these methods to several di.erent molecular aggregates. LÄS MER

  7. 5. Linear and Nonlinear Transport in Quantum Nanostructures

    Författare :Anneli Löfgren; Fasta tillståndets fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; magnetoconductance; mesoscopic; electron billiard; quantum dot; quantum ratchets; non-linear; symmetries; non-symmetric conduction; rectification; artificial material; Halvledarfysik; Fysicumarkivet A:2002:Löfgren; ballistic transport; quantum transport; 2DEG; Semiconductory physics; InP InGaAs; GaAs AlGaAs;

    Sammanfattning : In this thesis, electron transport in mesoscopic semiconductor nanostructures, in particular so-called electron billiards or quantum dots, is studied. The thesis can be divided into two areas: the linear response regime of transport, and the nonlinear response regime of transport. LÄS MER