Sökning: "Kinetic study"

Visar resultat 1 - 5 av 543 avhandlingar innehållade orden Kinetic study.

  1. 1. Pea carbonic anhydrase : a kinetic study

    Författare :Inga-Maj Johansson; W. Richard Chegwidden; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Pisum sativum; carbonic anhydrase; kinetic studies; site-directed mutagenisis;

    Sammanfattning : The enzyme carbonic anhydrase (CA), catalysing the interconversion between CO2 and HCO3', has long been known to be present in plants as well as in animals. Several of the animal isozymes, but none of the plant CAs, have been extensively studied. LÄS MER

  3. 2. Oxidative dissolution of doped UO2 and H2O2 reactivity towards oxide surfaces : A kinetic and mechanistic study

    Författare :Kristina Nilsson; Mats Jonsson; Mats Johansson; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Oxidative dissolution; UO2; ADOPT; H2O2; Spent Nuclear Fuel.; Kemi; Chemistry;

    Sammanfattning : Oxidative dissolution of std. UO2 and UO2 doped with Cr2O3 and Al2O3, i.e. ADOPT, induced by H2O2 and γ radiation has been the main focus in this licentiate thesis. LÄS MER

  4. 3. The effect of solid state inclusions on the reactivity of UO2 : A kinetic and mechanistic study

    Författare :Martin Trummer; Mats Jonsson; Lara Duro; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nuclear chemistry; Kärnkemi;

    Sammanfattning : The release of radionuclides is a key process in the safety assessment of a deep geological repository for spent nuclear fuel. A large fraction of the release is assumed to be a consequence of dissolution of the fuel matrix, UO2. In this doctoral thesis, the kinetics and the mechanisms behind oxidative U(IV) dissolution were studied. LÄS MER

  5. 4. Asymmetric transformation of ß- and γ-functionalized alcohols : Study of combined ruthenium-catalyzed racemization and enzymatic resolution

    Författare :Annika Träff; Jan-Erling Bäckvall; Reko Leino; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Kinetic resolution; dynamic kinetic resolution; kinetic asymmetric transformation; dynamic kinetic asymmetric transformation; enzyme catalysis; racemization; asymmetric synthesis; chlorohydrin; cyano acetate; amino alcohol; metalloenzyme; bifunctional catalytic system; Organic synthesis; Organisk syntes; organisk kemi; Organic Chemistry;

    Sammanfattning : The major part of this thesis describes the asymmetric synthesis of β- and γ-amino alcohols through the combination of ruthenium catalyzed racemization and enzymatic kinetic resolution. The dynamic kinetic resolution, DKR, protocol for chlorohydrins was improved by employing Bäckvall’s catalyst, which is a base activated racemization catalyst, in combination with Burkholderia cepacia lipase. LÄS MER

  7. 5. Adsorption of Metallic Ions onto Chitosan : Equilibrium and Kinetic Studies

    Författare :Martha Benavente; Joaquín Martínez; Olle Wahlberg; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Adsorption; biosorption; chitin; heavy metals; isotherm; kinetic models; mining; speciation; water treatment; Chemical engineering; Kemiteknik;

    Sammanfattning : Equilibrium isotherms and the adsorption kinetics of heavy metals onto chitosan were studied experimentally. Chitosan, a biopolymer produced from crustacean shells, has applications in various areas, particularly in drinking water and wastewater treatment due to its ability to remove metallic ions from solutions. LÄS MER