Search for dissertations about: "XK"

Found 5 swedish dissertations containing the word XK.

  2. 1. Metabolic Engineering of Xylose-Utilising Saccharomyces cerevisiae Strains. A Closer Look at Recombinant Strains Based on the Xylose Reductase-Xylitol Dehydrogenase Pathway

    Author : Marie Jeppsson; Teknisk mikrobiologi; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Microbiology; bacteriology; virology; mycology; Mikrobiologi; bakteriologi; virologi; mykologi; microarrays; cofactors; XK; XDH; XR; lignocellulose; xylose; ethanol; Saccharomyces cerevisiae; yeast;

    Abstract : Saccharomyces cerevisiae produces ethanol efficiently from the hexose sugars in lignocellulose hydrolysates, but it can not utilise pentose sugars such as xylose and arabinose. Stable xylose-utilising S. READ MORE

  4. 2. Gaussian fluctuations in some determinantal processes

    Author : Jonas Hägg; Kurt Johansson; Alexander Soshnikov; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Random matrices; limit theorems; MATHEMATICS; MATEMATIK;

    Abstract : This thesis consists of two parts, Papers A and B, in which some stochastic processes, originating from random matrix theory (RMT), are studied. In the first paper we study the fluctuations of the kth largest eigenvalue, xk, of the Gaussian unitary ensemble (GUE). READ MORE

  5. 3. Engineering xylose and arabinose metabolism in recombinant Saccharomyces cerevisiae

    Author : Kaisa Karhumaa; Teknisk mikrobiologi; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; virologi; bakteriologi; mycology; Mikrobiologi; bacteriology; Saccharomyces cerevisiae ; arabinose; xylose; fermentation; lignocellulose; yeast; mykologi; Biochemical technology; Biokemisk teknik; virology; Microbiology; ethanol;

    Abstract : Utilization of all sugars in lignocellulose hydrolysates is a prerequisite for economically feasible bioethanol production. The yeast commonly used for industrial ethanol production, Saccharomyces cerevisiae, is naturally unable to utilize pentose sugars xylose and arabinose, which constitute a large fraction of many lignocellulosic materials. READ MORE

  6. 4. Ethanol production by recombinant and natural xylose-utilising yeasts

    Author : Anna Eliasson; Teknisk mikrobiologi; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; lignocellulose; electron transport; redox balance; Pichia stipitis; Saccharomyces cerevisiae; ethanol; xylose; physiology; Microbiology; bacteriology; virology; mycology; Mikrobiologi; bakteriologi; virologi; mykologi;

    Abstract : The xylose-fermenting capacity of recombinant Saccharomyces cerevisiae carrying XYL1 and XYL2 from Pichia stipitis, which encode xylose reductase (XR) and xylitol dehydrogenase (XDH), respectively, is poor due to high xylitol formation. Whereas, P. READ MORE

  7. 5. Moduli spaces of zero-dimensional geometric objects

    Author : Christian Lundkvist; Dan Laksov; Jason Starr; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Algebraic geometry; Commutative algebra; Moduli spaces; Algebra and geometry; Algebra och geometri;

    Abstract : The topic of this thesis is the study of moduli spaces of zero-dimensional geometricobjects. The thesis consists of three articles each focusing on a particular moduli space.The first article concerns the Hilbert scheme Hilb(X). This moduli space parametrizesclosed subschemes of a fixed ambient scheme X. READ MORE