Tidlegare arrangement - Side 297

UiO:Livsvitenskap skal finansiere flere konvergensmiljø – forskningsgrupper med samarbeid på tvers av konvensjonelle faggrenser. Søknadsprosessen starter med workshop med speed-dater 28. og 29. september.

Late Lunch Talk by Meike Wortel, CEES

Jens Paaske, NBI Copenhagen

Motivated by recent experiments, we study lattices of magnetic adatoms exchange coupled to the surface of a conventional s-wave superconductor. We show that a variety of collective magnetic and electronic phases emerge in this system, due to the interplay between ferromagnetism and superconductivity. In particular, an adatom chain on a bulk (2d or 3d) superconductor can order into a magnetic spiral state leading to, and stabilized by, the opening of a topological superconducting gap within the band of YSR states induced by the adatoms. The spiral wave-vector increases sharply as the YSR energy is lowered from the quasiparticle continuum, due to a strong spin-spin exchange interaction mediated through the band of sub-gap YSR states. As the YSR band enters the topological phase, the wave-vector exhibits a peak and is thereafter driven down towards ferromagnetism due to YSR state double-exchange. We provide the range of YSR energies and adatom spacing where these phases exist for adatoms on a 3d, or 2d  superconductor. The magnetic ordering within a 2d YSR lattice is also explored.

(The slides will be available here)

"Comparative genomics by targeted capture and long read sequencing reveal dynamic evolution of hemoglobin gene clusters in codfishes"

UiO:Life Science will fund several «konvergensmiljø» – research groups with collaboration across conventional disciplinary boundaries. The application process starts with workshops with speed dating September 28 and 29.

UiO:Livsvitenskap skal finansiere flere konvergensmiljø – forskningsgrupper med samarbeid på tvers av konvensjonelle faggrenser. Søknadsprosessen starter med workshop med speed-dater 28. og 29. september.

Analysis on foreground cleaning methods for the CMB; Locating the residuals by correlation

Volcanic Margins: A Quantitative Analysis of Magmatic Activity

Dagmar Frisch,   Marie Skłodowska-Curie Research Fellow, University of Birmingham

Minisymposium open for all! Talks by Grace Wyngaard, Kristian Alfsnes, Martin Malmstrøm and William Brynildsen Reinar. Start at 13.00.

We consider extensions of Morel-Voevodsky's motivic homotopy theory to the

settings of derived and spectral algebraic geometry. Part I will be a

review of the language of infinity-categories and the setup of

Morel-Voevodsky homotopy theory in this language. As an example we will

sketch an infinity-categorical proof of the representability of Weibel's

homotopy invariant K-theory in the motivic homotopy category.

Ungforsk arrangeres i år av Det matematisk-naturvitenskapelige fakultet, UiO. Det blir både inspirasjonsshow, workshops, foredrag mm. Institutt for geofag stiller med fire foredrag.

The study of ancient DNA sequences from Yersinia pestis has yielded important insights into the ecology and evolution of this important human pathogen. However, the analysis and interpretation of ancient DNA data remains challenging compared with modern data. Here, we will discuss two recent papers with new or improved genomes from First and Second Pandemic victims.

Welcome to the GeoHyd Lunch Seminar on Monday Sept. 26th @ 12:15 in aud. 3 in the ZEB building (CEED-auditorium).

MD. Pandula Anilpriya Siribaddana at the Department of Informatics will be defending his dissertation for the degree of Ph.D:

Training as a means of cultivating communities of practice around health information systems

Numerical methods for stochastic conservation laws

Friday seminar by Marcin Piwczyński from Nicolaus Copernicus University in Toruń, Poland

MA Gerd Berget at the Department of Informatics will be defending her dissertation for the degree of Ph.D:

Search and find? An accessibility study of dyslexia and information retrieval

Velkommen til seminar om grunnleggende innføring i kjønnsforskning med Michael Kimmel, professor i sosiologi og kjønnsforskning ved Stony Brook University og professor 2 på Senter for tverrfaglig kjønnsforskning ved Universitetet i Oslo.

This Friday the journal club will discuss a paper by Pennell et al. (2015): "Model Adequacy and the Macroevolution of Angiosperm Functional Traits" .

Join us!

Nick Kaiser, IfA, Hawai University

Experimental investigation of linear stability mechanisms in stratified gas-liquid pipe flow

The evolution of interfacial waves on a stratified air water pipe flow is investigated experimentally. An oscillating plate introduced controlled perturbations at the inlet of the pipe. High speed cameras captured the evolution of these perturbations along the pipe by means of a phase-locked shadowgraphy technique. Thereby, it was possible to measure the temporal and the spatial evolution of the disturbances introduced in the flow. Particle image velocimetry was performed further downstream in order to evaluate changes in the base flow. 

A relatively large data bank has been gathered with varying air and water flow rates as well as varying amplitudes and frequencies of the inlet perturbations. Some preliminary results contain a qualitative assessment of linear vs. non-linear regimes and momentum transfer into the water layer.