Sökning: "Per Erik Olsson"

Visar resultat 1 - 5 av 22 avhandlingar innehållade orden Per Erik Olsson.

  1. 1. Micromechanics of Powder Compaction and Particle Contact

    Författare :Erik Olsson; Per-Lennart Larsson; Pär Jonsén; KTH; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  3. 2. Micromechanics of Powder Compaction

    Författare :Erik Olsson; Per-Lennart Larsson; Christophe Martin; KTH; []
    Nyckelord :Hållfasthetslära; Solid Mechanics;

    Sammanfattning : Compaction of powders followed by sintering is a convenient manufacturing method for products of complex shape and components of materials that are difficult to produce using conventional metallurgy. During the compaction and the handling of the unsintered compact, defects can develop which could remain in the final sintered product. LÄS MER

  4. 3. Interaction of brominated flame retardants with the chicken and zebrafish androgen receptors

    Författare :Solomon Asnake; Per-Erik Olsson; Dennis Larsson; Örebro universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; DBE-DBCH; TBP-AE; TBP-BAE; TBP-DBPE; gene transcription; Biology; Biologi;

    Sammanfattning : The survival of organisms depends on their ability to use different signaling pathways to adapt to the environment. The endocrine system consists of glands that release hormones to the blood stream. Male reproductive functions are regulated by androgens through interactions with the androgen receptor (AR). LÄS MER

  5. 4. Modulation of androgen receptor function by brominated flame retardants

    Författare :Joubert Banjop Kharlyngdoh; Per-Erik Olsson; Peter Pärt; Örebro universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; DBE-DBCH; TBP-AE; TBP-BAE; TBP-DBPE; androgen receptor; endocrine disrupters; brominated flame retardant; Biology; Biologi;

    Sammanfattning : .... LÄS MER

  7. 5. Teleost reproduction: Aspects of Arctic char (Salvelinus alpinus) oocyte growth and maturation

    Författare :Håkan Berg; Per-Erik Olsson; Birgitta Norberg; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Zoophysiology; Salmonid; oocyte growth; vitellogenin; vitelline envelope protein; stress; cortisol; oocyte maturation; membrane receptor; Zoofysiologi; Animal physiology; Zoofysiologi; Zoophysiology; zoofysiologi;

    Sammanfattning : In all vertebrate species, reproduction is a hormonally controlled process, important for growth and maturation of gonads and germ cells. Production of functional germ cells is of outmost importance to secure the survival of a species. Fish comprises 50% of the known vertebrates and are found in aquatic habitats all over the world. LÄS MER