Sökning: "Magnus Björklund"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden Magnus Björklund.

  1. 1. The link between kraft cooking and bleaching : influence on ECF bleachabiblity and bleaching effluent parameters

    Författare :Magnus Björklund; []
    Nyckelord :;

    Sammanfattning : The link between kraft cooking and bleaching was investigated, with the focus on how cooking kappa number, cooking conditions and pre-bleaching stages influence ECF bleachability and environmental parameters in the bleaching effluent. In one part of the study standard cooking conditions were used to produce birch and spruce pulps of different kappa numbers and then we studied how the AOX in the ECF bleaching effluent was affected by oxygen delignification, and hot acid stages. LÄS MER

  3. 2. Studies of Functional Interactions within Yeast Mediator and a Proposed Novel Mechanism for Regulation of Gene Expression

    Författare :Magnus Hallberg; Stefan Björklund; Karl Ekwall; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biochemistry; Mediator; Transcriptional regulation; Srb10; Cdk8; Med2; Srb7; Med21; RNA pol II; Biokemi; Biochemistry; Biokemi; medicinsk biokemi; Medical Biochemistry;

    Sammanfattning : The yeast Mediator complex is required for transcriptional regulation both in vivo and in vitro and the identification of similar complexes from metazoans indicates that its function is conserved through evolution. Mediator subunit composition and structure is well characterized both by biochemical, genetic and biophysical methods. LÄS MER

  4. 3. Initiation of rolling contact fatigue from asperities in elastohydrodynamic lubricated contacts

    Författare :Carl-Magnus Everitt; Bo Alfredsson; Stefan Björklund; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Spalling; Pitting; Slip; Elastohydrodynamic; Thermal elastohydrodynamic; Fatigue; Contact mechanics.; Pitting; Glidning; Elastohydrodynamik; Termisk elastohydrodynamik; Utmattning; Kontaktmekanik.; Hållfasthetslära; Solid Mechanics;

    Sammanfattning : Rolling contacts are utilized in many technical applications, both in bearings and in the contact between gear teeth. These components are often highly loaded, which makes them susceptible to suffer from rolling contact fatigue. This work focuses on the rolling contact fatigue mechanism of pitting. LÄS MER

  5. 4. Akademisk afhandling om allmänningar, hwaraf första delen med konungens allernådigste tillstånd den vidtlagfarna juridiska facultetens samtycke utgifves af Lars Janzon ... och Johan Magn. Björklund östgöthe. till offentlig granskning i gustavianska lärosalen den 15 april 1807

    Författare :Laurentius Janzon; Johan Magnus Björklund; Laurentius Janzon; Uppsala universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Skogsbruk; Sverige;

    Sammanfattning : .... LÄS MER

  7. 5. Optical Sensing With an Ordinary Mobile Phone

    Författare :Zafar Iqbal; Ingemar Lundström; Robert Björklund; Mats Eriksson; Magnus Willander; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : A major portion of the world’s population (≈ 80% of the total) lives in developing countries where lab instruments such as spectrophotometers are not widely available as their purchasing as well as maintenance is normally unaffordable. On the other hand, there are now around five billion mobile phone subscriptions worldwide and the current generation of standard mobile phones has several capabilities to perform user-defined analysis. LÄS MER