Sökning: "Circadian rhythms"

Visar resultat 6 - 10 av 34 avhandlingar innehållade orden Circadian rhythms.

  1. 6. Multiple neurotransmitter inputs modulate circadian clock neurons in Drosophila

    Författare :Yasutaka Hamasaka; Dick Nässel; François Rouyer; Stockholms universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; circadian; Drosophila; neurotransmitter; G-protein coupled receptor; Neurobiology; Neurobiologi;

    Sammanfattning : Most animals have endogenous circadian clocks, which drive daily rhythms in behavior and physiology to adapt to daily cycles of the environment. Several sets of neurons have been identified as circadian pacemakers (clocks) in the brain of Drosophila melanogaster, but the neuronal circuits and neurotransmitters signalling circadian information are poorly known. LÄS MER

  3. 7. Altered sleep/wake patterns and circadian rhythms : laboratory and field studies of sympathoadrenomedullary and related variables

    Författare :Torbjörn Åkerstedt; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES;

    Sammanfattning : Six studies on sleep/wake patterns and circadian rhythms were  carried out. In summary: (1) Adrenaline excretion, self-rated activation,  and body temperature rhythms persisted during sleep  deprivation, resisted adjustment to rotating shift work, but adjusted  rather well to permanent night work. LÄS MER

  4. 8. Biological Rhythms of Pancreatic Secretion in Young Pigs with empahasis to the time around weaning

    Författare :Mary-Jane Sebabatso Thaela; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Volume; Ultradian; Protein; Pancreas; Pig; IRCT; Insulin; Infradian; Glucose; Circadian; Chymotrypsin; Biologic week and Half-week; Chronome; Animal physiology; Djurfysiologi;

    Sammanfattning : When the time structure (chronome) of pancreatic secretion was studied after weaning in 5-week-old pigs, the zero-amplitude (no-rhythm) assumption was rejected for the about-weekly (circaseptan, CS) and about-half-weekly (circasemiseptan, CSS) chronome components. When the data were assessed individually on a day-to-day basis, a 24-hour component was suggested (P. LÄS MER

  5. 9. On gene regulatory networks and data fitting

    Författare :Karl Fogelmark; Beräkningsbiologi och biologisk fysik - Genomgår omorganisation; []
    Nyckelord :Circadian rhythms; gene regulation; transcription networks; correlated data; Circadian rhythms; gene regulation; transcription networks; correlated data; Fysicumarkivet A:2016:Fogelmark;

    Sammanfattning : Living organisms can be viewed as complex biological machines. In order to function, they must regulate their internal mechanism to do the right thing, at the right time, and in the right amount. Part of this regulation is encoded in gene regulatory networks. LÄS MER

  7. 10. Non-image-forming effects of light : Implications for the design of living and working environments

    Författare :Mathias Adamsson; Thorbjörn Laike; Maria Johansson; Yvonne de Kort; Institutionen för arkitektur och byggd miljö; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; circadian rhythms; circannual; light exposure; melatonin; cortisol; sleep-wake behavior; perception; mood; spectral composition; measurement;

    Sammanfattning : Seasonal variation in mood and subjective well-being are common at geographical locations further away from the equator. The 24-h light-dark cycle is the main time cue for synchronizing the human circadian clock to the external day and night. LÄS MER