Sökning: "migration-speed"

Visar resultat 1 - 5 av 9 uppsatser innehållade ordet migration-speed.

  1. 1. Feedback imaging of cellular dynamics with fluorescence microscopy

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Emil Sorcini; [2022]
    Nyckelord :Tracking; Segmentation; Fluorescence microscopy; Lattice light-sheet; Cell migration; NK cells; ZEN; OAD; Experiment Feedback; Spårning; Segmentering; Fluorescensmikroskopi; Lattice light-sheet; Cellmigration; NK celler; ZEN; OAD; Experiment Feedback;

    Sammanfattning : In biology, it is common to study cultured cells (in vitro) with fluorescence time-lapse microscopy. The cells are recorded for longer period of time and can later be viewed at an accelerated speed. During the acquisition some live cells tend to migrate. LÄS MER

  3. 2. Smoltification status of Atlantic salmon (Salmo salar) in relation to migratory success and migration speed in a regulated river

    Master-uppsats, Karlstads universitet

    Författare :Johanna Högvall; [2020]
    Nyckelord :Atlantic salmon; juvenile downstream migration; parr-smolt transformation; regulated rivers; dams; migration delay; radio-telemetry; Atlantlax; vandringshinder; smoltifieringsgrad; reglerade älvar; radiotelemetri;

    Sammanfattning : There is a concern that the ecosystems around the world are suffering from fragmentation. Ecosystems such as rivers have lost their connectivity to a large extent due to hydroelectric dams with no or insufficient passways for the natural flow of organisms, matter and energy. LÄS MER

  4. 3. Hur påverkar ålder och fetthalt laxsmoltens utvandring till havet?

    Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Pär Dahlgren; [2015]
    Nyckelord :Salmon; smolt; migration-speed; survival;

    Sammanfattning : Abstract Previous studies have shown that wild smolt have 2.5-4.5 times higher survival rate than smolt grown in culture and that starved reared smolt behave more like wild born smolt. LÄS MER

  5. 4. Fysiska strukturer i Umeälvens gamla älvfåra och dess inverkan på laxsmoltens utvandringsframgång

    Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental Studies

    Författare :Viktoria Tegenfeldt; [2014]
    Nyckelord :smolt; vandring; fysiska strukturer; Umeälven; akustiska sändare;

    Sammanfattning : The survival of hatchery reared smolts is generally low after release. To get a better understanding of what variables affecting migration success, Atlantic salmon smolts were studied during their out-migration in the old river channel in the lower part of river Umeälven. LÄS MER

  7. 5. Directed Migration of Natural Killer Cells by Microcontact Printing

    Kandidat-uppsats, KTH/Tillämpad fysik

    Författare :Karl Olofsson; Gustav Stenbom; [2014]
    Nyckelord :;

    Sammanfattning : NK cells are large granular lymphocytes that patrol the body for defect or virally infected cells. The migration of natural killer (NK) cells is critical for the detection and elimination of aberrant cells such as tumor- and virally infected cells. If a NK cell stumbles upon a target, i.e. LÄS MER