Filtyp
Albeit costly, flight allows birds to travel great distances in a short time, making it a highly effective mode of locomotion, especially during migration.1,2 Understanding how birds use energy during flight is essential for studying their flight ecology.3 To fly, birds flap their wings, accelerating surrounding air and generating flight forces, where the rate of energy added to the wake represent
The recent Kunming-Montreal Global Biodiversity Framework (GBF) sets ambitious goals but no clear pathway for how zero loss of important biodiversity areas and halting human-induced extinction of threatened species will be achieved. We assembled a multi-taxa tracking dataset (11 million geopositions from 15,845 tracked individuals across 121 species) to provide a global assessment of space use of
Birds regularly moult their feathers when they are worn from use such as mechanical wear damage due to UV exposure or accidents. Moulting generates temporary, generally symmetric, wing gaps, which can reduce flight performance by altering aerodynamic forces, lift and drag. Birds can compensate for some of these effects through mass loss, enlarged flight muscles, and adaptive wing morphing. To circ
System-level brain modeling is a powerful method for building computational models of the brain and allows biologically motivated models to produce measurable behavior that can be tested against empirical data. System-level brain models occupy an intermediate position between detailed neuronal circuit models and abstract cognitive models. They are distinguished by their structural and functional r
Purpose The purpose of this study is to explore how e-banking strategies affects three Swedish banks’ employees in their daily work, to further build on the research that has been done within e-banking, and to complete the research on employees’ approach to the phenomenon. Methodology The study was conducted with a qualitative research approach; semi-structured interviews through personal con
Organisationer med dess ledare intresserar sig i allt större utsträckning för att ha anställda som har en balans i sin arbets- och livssituation. Ett sätt att hjälpa och stötta individen med att hitta harmoni mellan arbete och fritid är att erbjuda så kallad karriärplanering. Det traditionella sättet att jobba med karriärplanering, det vill säga individen ansikte mot ansikte med en samtalspartner,
Spårväxeln är en viktig komponent i järnvägsanläggningen som möjliggör byte mellan spår. Att växeln fungerar väl är viktigt ur trafikeringssynpunkt då den största delen av trafiken någon gång måste byta spår under sin färd mellan två destinationer. Problemen kan bli påtagliga med en icke-fungerande växel vilket orsakar försenade/inställda tåg och resenärer som kostar samhället pengar. Att införa n
Spiral galaxies, like the Milky Way, transform at some point in time into a rotationally supported system. Using an extant dataset consisting of 319,835 subgiants from LAMOST with precise ages from the literature, we determine, for the first time, the age when the Milky Way disk spins up, i.e., when the mean circular velocity changes from halo-like to disk-like. We find in concordance previous stu
Regional carbon dioxide (CO₂) and methane (CH₄) source contributions were analysed at two European coastal observatories, El Arenosillo (ARN) in southwestern Spain and Capo Granitola (CGR) in southern Italy, using in situ observations and STILT model simulations from 2006 to 2023, enabling source attribution to biogenic, fossil fuel, anthropogenic, and natural contributions. Model-observation agre
Inclination-dependent grain boundary (GB) energy and shear-coupled motion are studied for [001] and [111] tilt GBs in face-centered cubic materials using three-dimensional (3D) phase field crystal (PFC) simulations. A large dataset spanning misorientation and inclination space is systematically generated to evaluate trends in GB energy and shear-coupling. GB energy variations broadly follow ideal
Recovery of plastically deformed metals involves several stages of substructure evolution during which dislocation entanglements and networks become increasingly organized, thereby lowering the stored energy in the material. Central to recovery is the formation and evolution of subgrains, which is also recognized as a recrystallization precursor. In this paper, subgrain coarsening is investigated
In this paper, we have studied the sensitivity of the ESSnuSB far detector to supernova neutrinos. ESSnuSB is a proposed long-baseline neutrino experiment in Sweden, which will use a 538 kt water Cherenkov detector to probe the leptonic phase δCP by studying the second oscillation maximum. However, given the very large detector volume, it will have an excellent sensitivity to supernova neutrinos i
https://www.nateko.lu.se/sv/ola-olsson - 2026-09-15
It is known that many-fermion systems, such as complex atoms and nuclei, reveal (at some level of excitation energy) local signatures of quantum chaos similar to the predictions of random matrix theory. Here, we study the gradual development of such signatures in a model system of up to 16 fermions interacting through short-range pairing-type forces in a two-dimensional harmonic trap. We proceed f
https://www.geologi.lu.se/leif-johansson - 2026-09-15
