Sökning: "irregular migration"

Visar resultat 16 - 20 av 22 avhandlingar innehållade orden irregular migration.

  1. 16. Investigating the function of the Receptor Tyrosine Kinase ALK during Drosophila melanogaster development

    Författare :Christina Lorén; Mike Taylor; Umeå universitet; []
    Nyckelord :DAlk; receptor tyrosine kinase; Jeb; visceral muscle fusion; ERK; Drosophila; endoderm; molecular cell biology; molekylär cellbiologi;

    Sammanfattning : The Drosophila melanogaster gene Anaplastic Lymphoma Kinase (DAlk) is homologous to mammalian Alk, which is a member of the Alk/Ltk family of receptor tyrosine kinases (RTKs). In humans the t(2;5) translocation involving the Alk locus encodes an active form of Alk that is the causative agent in Non-Hodgkin’s Lymphoma (Morris et al., 1994). LÄS MER

  3. 17. On regulation of hippocampal neurogenesis : roles of ethanol intake, physical activity and environment

    Författare :Elin Åberg; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The addiction research field struggles with the question of how long-term memories associated with addictions, which are likely to have a role in the relapse phenomenon, are formed. The work in this thesis has focused on structural adaptations and changes in plasticity genes in hippocampus, formed by both naturally awarding and drug-induced reward-seeking behaviors. LÄS MER

  4. 18. Seismic investigations in the Brunswick No. 6 area, Canada – Imaging and heterogeneity

    Författare :Saeid Cheraghi; Alireza Malehmir; Gilles Bellefleur; Pekka Heikkinen; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Brunswick No. 6; Mineral deposits; 2D and 3D reflection seismic; Acquisition footprint; Scale length; Heterogeneity; Numerical modeling; Geofysik med inriktning mot fasta jordens fysik; Geophysics with specialization in Solid Earth Physics;

    Sammanfattning : The Brunswick No. 6 area, which is located in the Bathurst Mining Camp, New Brunswick, Canada, is the focus of this thesis. LÄS MER

  5. 19. Stress Effects on Solute Transport in Fractured rocks

    Författare :Zhihong Zhao; Lanru Jing; Ivars Neretnieks; Auli Niemi; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fractured rocks; Solute transport; Stress effects; Coupled stress-flow-transport processes; Analytical solution; Particle mechanics model; Fracture surface damage; Discrete element method; Particle tracking method;

    Sammanfattning : The effect of in-situ or redistributed stress on solute transport in fractured rocks is one of the major concerns for many subsurface engineering problems. However, it remains poorly understood due to the difficulties in experiments and numerical modeling. LÄS MER

  7. 20. Conformational and Dynamical Aspects of Conjugated Polymers and Oligomers of Interest for Photoluminescence

    Författare :Mette Grage; Kemisk fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; femtosecond spectroscopy; conformations; anisotropy; excitation transfer; oligothiophene radical cations; MEH-PPV; Conjugated polymers; polythiophene; resonance Raman spectroscopy.; Chemistry; Kemi; Physics; Fysik;

    Sammanfattning : Transient absorption laser spectroscopy and resonance Raman spectrscopy have been used to study conjugated polymers and oligomers. To extract more information the measurements have been compared to computer simulations and calculations. LÄS MER