Sökning: "strains"

Visar resultat 11 - 15 av 1494 avhandlingar innehållade ordet strains.

  1. 11. Development of robust cyanobacterial strains for biotechnological applications : Stress tolerance and cell-specific expression in heterocyst-forming cyanobacteria

    Författare :Xin Li; Karin Stensjö; Yagut Allahverdiyeva-Rinne; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cyanobacteria; Dps protein; heterocysts; Nostoc; oxidative stress; cell specific promoter; ROS tolerance; synthetic biology tools transcriptional regulation.; Biokemi; Biochemistry;

    Sammanfattning : Synthetic biology tools can be used to exploit potential applications of cyanobacteria, promising photosynthetic hosts for production of fuels and chemicals. Specific genetic tools are needed for the development of robust cyanobacterial strains for bioengineering. LÄS MER

  3. 12. Fractional derivative viscoelasticity at small and finite strains

    Författare :Klas Adolfsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : .... LÄS MER

  4. 13. Läraryrkets tillfredsställelse och påfrestning : en empirisk metodstudie för klassificering av kritiska situationer i lärares yrkesutövning

    Författare :Roger Ellmin; Stockholms universitet; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  5. 14. Evolution of Anisotropy in Continua Exposed to Large Strains

    Författare :Magnus Harrysson; Hållfasthetslära; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This thesis deals with the modeling of anisotropic materials at finite deformations. The major emphasis is the development of constitutive models able to account for the evolving directionally dependent properties of these materials. In addition, the numerical implementation of the models developed is addressed. LÄS MER

  7. 15. Constitutive Modeling of Large Ratcheting Strains in Carbon Steel

    Författare :Göran Johansson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : A thermodynamically consistent constitutive materialmodel for describing the large strain response of polycrystallinemetals during cyclic loading is proposed. In particular, it isproposed to model experimentally observed large ratcheting strainsin rail steel by the classical Armstrong-Frederick evolution ruleand several back-stresses. LÄS MER