Tidligere arrangementer - Side 53

Abstract:  The cerebral circulation must ensure continuous blood perfusion of the brain which is the biggest oxygen consumer in the human body. It must also provide mechanisms for adaptability to changing oxygen demand as well as resilience to local blockages. We will look at such mechanisms at the level of the microcirculation where the mechanics of blood flow is dominated by red blood cells. We will find that red blood cells do not only play the role of oxygen carriers, but that they are an important element of blood flow regulation itself. To this end, we will compare results from in vitro studies in microfluidic chips to theoretical and computational models and to in vivo data from mice. We will derive local auto-regulation mechanisms for blood flow and will study how local modifications in the vascular network can modify the global hematocrit distribution. These results will emphasize the relevance of red blood cell mechanics and microvascular network geometry in cerebral blood perfusion.

This talk is part of the Mechanics Lunch Seminar series. Bring-your-own-lunch and lots of questions.

Prof. Dr. Sergey V. Ketov
Tokyo Metropolitan University and Kavli Institute for the Physics and Mathematics of the Universe, The University of Tokyo, Japan.

Dr. Katie Overy, senior lecturer at University of Edinburgh, will speak at RITMO's Seminar Series.

NCMM invites to a mini-symposium in molecular and precision medicine.

NCMM invites to a mini-symposium in molecular and precision medicine.

Abstract:  Swimming bacteria, growing cell tissues, molecular motors, and microtubule systems confined to a substrate are examples of active matter films that exhibit long-range nematic (orientational) order. Intrinsic activity in these systems builds mechanical stresses that tend to destroy local nematic order through topological defects, which act as sources of persistent active flows.  The overall evolution and functionality of biological matter is greatly influenced by these orientational defects. Yet, their formation and dynamics are driven by a complex interplay between topological singularities in the nematic order and active flow instabilities, and this is not completely understood. 

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Prof. Per Barth Lilje, Institute of Theoretical Astrophysics, UiO.

Antibiotikaresistens utgj?r en global trussel. I forbindelse med den internasjonale antibiotikauken inviterer ASP til fagwebinar om antibiotika i prim?rhelsetjenesten.

For many real-life phenomena one may assume that the units of observation, typically patients, transition through a set of discrete states on their way towards an absorbing state. The states often constitute various stages of a disease, from perfect health through various stages of dementia for example. Multi-state models are a class of statistical models which allow us to study the time spent in different states, the probability of transitioning between states, and the relationship between these quantities and covariates of interest. In many applications the transition times between states are not observed exactly; instead, the current state of the patients is queried at arbitrary times. The transition times are therefore interval censored, and this makes inference and modelling challenging. Most current approaches are based on the Markov assumption, for example the simplest parametric model available - the time-homogeneous Markov model. Here, we propose a new, general framework for parametric inference with interval censored multi-state data. Our models allow non-Markovian behaviour. I will present the framework and an algorithm for the automatic construction of the likelihood function, along with real-data examples. This talk is based on joint work with Marthe Aastveit and Nils Lid Hjort.

Professor Samuli Ripatti, Assistant Director and Head of the Complex Disease Genetics group at the Institute for Molecular Medicine (FIMM), and Dr. Elisabeth Wid¨¦n, Head of the Genomic Discoveries and Clinical Translation group at FIMM, will present their latest research. 

Abstract:  Exchange processes across a porous-medium free-flow interface occur in a wide range of environmental, technical, and bio-mechanical systems.  In the course of these processes, flow dynamics in the porous domain and in the free-flow domain exhibit strong coupling, often controlled by mechanisms at the common interfaces.  Such processes need to be analyzed on small scales and new scale-bridging modeling concepts need to be developed for an accurate description also on larger scales (REV scale). Recent developments within the Collaborative Research Center "Interface-Driven Multi-Field Processes in Porous Media ¨C Flow, Transport and Deformation" and the Cluster of Excellence SimTech at the University Stuttgart regarding such aspects for coupled free-flow and porous-medium flow systems will be presented in this talk.

This talk is part of the Mechanics Lunch Seminar series. Bring-your-own-lunch and lots of questions.

Abstract:  We present a second-order numerical scheme to compute capillary bridges between arbitrary solids by minimizing the total energy of all interfaces. From a theoretical point of view, this approach can be interpreted as the computation of generalized minimal surfaces using a Newton-scheme utilizing the shape Hessian. In particular, we give an explicit representation of the shape Hessian for functionals on shells involving the normal vector without reverting back to a volume formulation. From an algorithmic perspective, we combine a resolved interface via a triangulated surface for the liquid with a level-set description for the constraints stemming from the arbitrary geometry. The actual shape of the capillary bridge is then computed via finite elements provided by the FEniCS environment, minimizing the shape derivative of the total interface energy.

This talk is part of the Mechanics Lunch Seminar series. Bring-your-own-lunch and lots of questions.

Honorary Prof. Jean-Pierre Eckmann, University of Geneva, Switzerland.

Norsk senter for helsetjenesteforskning presenterer p?g?ende forskning innen brukerorienterte helsetjenester. 

Anne Marit rundet 70 ?r i h?st og vi har satt sammen et program som gir smakebiter p? forskning og temaer som hun har v?rt opptatt av i ulike stadier i sin karriere.

C*-algebra seminar talk by Ole Brevig (University of Oslo)

Second of two lectures on constructing non-Fourier-Mukai functors

Abstract:  After a broad overview of the activities of MecaWet group at PMMH, the presentation will focus on the ¡°dry side¡± of MecaWet.

This talk is part of the Mechanics Lunch Seminar series. Bring-your-own-lunch and lots of questions.

Foteini Oikonomou, Physics Department of the Norwegian University of Science and Technology

First of two lectures on constructing non-Fourier-Mukai functors

How to strengthen global cooperation to prevent future pandemics? In this seminar, Adam Kamradt-Scott will discuss different proposals currently being negotiated, such as a new pandemic treaty or revising existing international instruments.

Anders Jahre¡¯s Senior Medical Prize for 2021 is awarded to Professor Poul Nissen, the Director of the Nordic EMBL Partnership¡¯s Danish node, DANDRITE. On the occasion he will talk about his work at the Jahre lectures.