Search for dissertations about: "Degradation"

Showing result 21 - 25 of 2402 swedish dissertations containing the word Degradation.

  2. 21. Structural and biochemical insights into biosynthesis and degradation of N-glycans

    Author : Tom Reichenbach; Christina Divne; David Drew; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; N-glycan; biosynthesis; degradation; glycosyltransferase; glycoside hydrolase; biofuel; enzyme; membrane protein; Bioteknologi; Biotechnology;

    Abstract : Carbohydrates are a primary energy source for all living organisms, but importantly, they also participate in a number of life-sustaining biological processes, e.g. cell signaling and cell-wall synthesis. The first part of the thesis examines glycosyltransferases that play a crucial role in the biosynthesis of N-glycans. READ MORE

  4. 22. Cellulose degradation in pulp fibers studied as changes in molar mass distributions

    Author : Rickard Berggren; KTH; []
    Keywords : cellulose; kraft pulp; birch; spruce; ozonation; acid hydrolysis; degradation; MMD; size-exclusion chromatography; light scattering; molar mass; chain scission;

    Abstract : In this thesis, size-exclusion chromatography (SEC) of woodpolymers dissolved in lithium chloride/N,N-dimethylacetamide(LiCl/DMAc) has been used to characterize the molar massdistributions (MMD) of wood polymers in pulp fibers afterchemical degradation.Characterization of birch kraft pulps subjected to ozonedegradation and acid hydrolysis, respectively, rendereddifferent changes in the MMD. READ MORE

  5. 23. Modification of Surface Properties Through Polymer Adsorption. Kinetics, Interaction, Degradation and Stability

    Author : Dries Muller; Fysikalisk kemi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TIRF.; protein; poly lactide ; poly ethylene oxide ; gelatin; exchange; enzyme; ellipsometry; desorption; degradation; adsorption; copolymers; Physical chemistry; Fysikalisk kemi;

    Abstract : The interfacial behaviour of polymers in relation to surface modification and polymer degradation was studied. In the first part the interfacial behaviour of amphiphilic poly(ethylene oxide)–poly(D,L-lactide) (EmLn) diblock copolymers at hydrophilic and hydrophobic substrates from aquous solution was studied. READ MORE

  6. 24. Chemical Pollutants Released to the Marine Environment by Degradation of Plastic Debris

    Author : Berit Gewert; Matthew MacLeod; Magnus Breitholtz; Merle Plassmann; Martin Wagner; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Plastic; microplastic; degradation; leachates; weathering; photo-oxidation; marine environment; toxicity; Applied Environmental Science; tillämpad miljövetenskap;

    Abstract : Since the beginning of the mass production in the 1940s, plastic has been manufactured in quickly increasing amounts. Plastic debris accumulates in the environment and lately much attention has been drawn to the pollution in the world’s oceans. READ MORE

  7. 25. Temporal and spatial variations of soil degradation in Mwisanga Catchment, Kondoa, Tanzania

    Author : Pius Zebhe Yanda; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Soil degradation; and degradation; Tanzania; Erosion; Kondoa; Tanzania;

    Abstract : .... READ MORE