• Horizons that gyre and gimble: a differential characterization of null hypersurfaces 

  Blitz, Samuel; McNutt, David Duncan (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-06-04)

  Motivated by the thermodynamics of black hole solutions conformal to stationary solutions, we study the geometric invariant theory of null hypersurfaces. It is wellknown that a null hypersurface in a Lorentzian manifold can be treated as a Carrollian geometry. Additional structure can be added to this geometry by choosing a connection which yields a Carrollian manifold. In the literature various ...
• Simulations of the collection of mesospheric dust particles with a rocket instrument 

  Pineau, Adrien; Trollvik, Henriette M.; Greaker, Herman; Olsen, Sveinung viggo; Eilertsen, Yngve; Mann, Ingrid Brigitte (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-06-28)

  We investigate the collection of dust particles in the mesosphere with the MESS (MEteoric Smoke Sampler) instrument that is designed to fly on a sounding rocket. We assume that the ice particles that form in the polar mesosphere between 80 and 85 km altitude in summer contain meteoric smoke particles; and these should be collected with MESS. The instrument consists of a collection device with an ...
• Path analysis reveals combined winter climate and pollution effects on the survival of a marine top predator 

  Layton-Matthews, Kate; Erikstad, Kjell E.; Sandvik, Hanno; Ballesteros, Manuel; Hodges, Kevin; Mesquita, Michel d. S.; Reiertsen, Tone Kristin; Yoccoz, Nigel Gilles; Bustnes, Jan Ove (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-08-06)

  Marine ecosystems are experiencing growing pressure from multiple threats caused by human activities, with far-reaching consequences for marine food webs. Determining the effects of multiple stressors is complex, in part, as they can affect different aspects of biological organisation (behaviour, individual traits and demographic rates). Determining the combined effects of stressors, through different ...
• MRSA-halsbærerskap hos to helsearbeidere 

  Evenstad, Berit; Halvorsen, Dag Seeger; Myrbakk, Torni (Journal article; Tidsskriftartikkel, 2024-02-14)

  Helsearbeidere med påvist bærerskap av meticillinresistente Staphylococcus aureus (MRSA) opplever ofte negative konsekvenser, slik som arbeidsrestriksjoner, langvarige sykmeldinger, repeterte saneringsforsøk, stigmatisering og psykososialt stress. Vi omtaler to studenter som etter flere mislykkede saneringsforsøk fikk utført tonsillektomi for å kvitte seg med halsbærerskap.
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  Mapping Potential Timing of Ice Algal Blooms From Satellite 

  Stroeve, J.C.; Veyssiere, G.; Nab, C.; Light, B.; Perovich, D.; Laliberté, J.; Campbell, Karley Lynn; Landy, Jack Christopher; Mallett, Robbie David Christopher; Barrett, A; Liston, G.E.; Haddon, A.; Wilkinson, J. (Journal article; Tidsskriftartikkel, 2024-04-17)

  As Arctic sea ice and its overlying snow cover thin, more light penetrates into the ice and upper ocean, shifting the phenology of algal growth within the bottom of sea ice, with cascading impacts on higher trophic levels of the Arctic marine ecosystem. While field data or autonomous observatories provide direct measurements of the coupled sea ice-algal system, they are limited in space and time. ...

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