Sökning: "Luleå University Of Technology"

Visar resultat 6 - 10 av 3377 avhandlingar innehållade orden Luleå University Of Technology.

  1. 6. Production of L-arginine by Escherichia coli : Impact of genetic modifications, carbon and nitrogen sources

    Författare :Mireille Ginesy; Ulrika Rova; Michael Sauer; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biokemisk processteknik; Biochemical Process Engineering;

    Sammanfattning : In the recent years, the demand for environmental friendly produced L-arginine has risen with the increasing number of applications for this amino acid in pharmaceuticals, nutraceuticals, cosmetics, animal feed and fertilizers.Microbial production of L-arginine usually relies on Corynebacterium glutam-icum and Corynebacterium crenatum strains. LÄS MER

  3. 7. Mechanical and Environmental Durability of High Performance Bio-based Composites

    Författare :Newsha Doroudgarian; Egidija Rainosalo; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polymera konstruktionsmaterial; Polymeric Composite Materials;

    Sammanfattning : This study is an initial step within the on-going project on development of high performance bio-based composites with improved mechanical (fatigue) and environmental (elevated humidity and temperature) durability. In the presented thesis the performance of cellulosic fibers (flax and regenerated cellulose), bio-based resins (Tribest, EpoBioX, Palapreg, and Envirez) and their composites under exposure to elevated humidity has been studied. LÄS MER

  4. 8. The effect of changing stresses on the stability of underground openings : a study of the behavior of underground tunnels

    Författare :Peter Lundman; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och Berganläggningsteknik;

    Sammanfattning : .... LÄS MER

  5. 9. Modelling and simulation in the early stages of the development process of a manufacturing system : a case study of the development process of a wood flooring industry

    Författare :Jon Johansson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Träteknik; Wood Technology;

    Sammanfattning : Manufacturing Simulation, or more accurately, Discrete Event Simulation (DES), is an important problem-solving methodology for the solution of many real-world problems in the manufacturing industry. Implementation of DES has become successful in a number of industrial sectors. LÄS MER

  7. 10. Machining properties of wood : Tool wear, cutting force and tensioning of blades

    Författare :Luis Cristovao; Frieder Scholz; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Träteknik; Wood Technology;

    Sammanfattning : Cutting processes, in general, and wood cutting processes, in particular, are complex to explain and describe with many influencing factors. Wood, in contrast to man-made fabricated materials, is not a homogenous and distinct material, but a multifaceted and nonhomogeneous biological material. LÄS MER