Students’ learning developments of limits were studied in a calculus course. Theiractions, such as problem solving and reasoning, were considered traces of theirmental representations of concepts and were used to describe the developmentsduring a semester. Several students went through the course with a vague conception of limits which in some cases was wrong. A higher awareness about their mental

The ratio of production cross-sections of ψ(2S) over J/ψ mesons as a function of charged-particle multiplicity in proton-proton collisions at a centre-of-mass energy s = 13 TeV is measured with a data sample collected by the LHCb detector, corresponding to an integrated luminosity of 658 pb−1. The ratio is measured for both prompt and non-prompt ψ(2S) and J/ψ mesons. When there is an overlap betwe

Sports-related concussions may cause white matter injuries and persistent post-concussive symptoms (PPCS). We hypothesized that athletes with PPCS would have neurocognitive impairments and white matter abnormalities that could be revealed by advanced neuroimaging using ultra-high field strength diffusion tensor (DTI) and diffusion kurtosis (DKI) imaging metrics and cerebrospinal fluid (CSF) biomarSports-related concussions may cause white matter injuries and persistent post-concussive symptoms (PPCS). We hypothesized that athletes with PPCS would have neurocognitive impairments and white matter abnormalities that could be revealed by advanced neuroimaging using ultra-high field strength diffusion tensor (DTI) and diffusion kurtosis (DKI) imaging metrics and cerebrospinal fluid (CSF) biomar

Utforskandet av nya roller av komplement proteinet C3 Komplementsystemet är en uråldrig evolutionär mekanism i det medfödda immunförsvaret och funkar som en av kroppens första försvarslinje. I detta gamla system finns det ett protein som sticker lite mer, ett protein som har en central roll i komplementsystemet, nämligen komplement protein C3. Inte nog med att den har en viktig roll i framkallninThe complement system is an ancient component of the immune system, comprising three pathways: classical, lectin and alternative pathways. Central to these pathways is complement component C3, which converges the three pathways. C3 can be enzymatically cleaved into C3a which functions as an anaphylatoxin, and C3b, which functions as an opsonin. Previously, C3 was understood as a serum protein, how

Inhibitory neurons or interneurons are important regulators of brain signaling. Parvalbumin (PV) interneurons, the most common interneuron subtype, have the unique ability to fire a rapid train of action potentials. They regulate the activity of pyramidal neurons to promote appropriate behavioral responses. Cortical PV interneurons’ function is greatly diminished in neuropsychiatric disorders e.g.

Ett ofta förekommande problem inom byggbranschen är fukt- och inomhusmiljörelaterade skador. Dessa skador är både kostsamma att åtgärda och har negativa effekter på inomhusklimatet. Problem kan till exempel uppstå då ett betongbjälklag beläggs med en tät plastmatta. Vid för hög halt icke uttorkad byggfukt i bjälklaget vid tidpunkten för limningen av mattan kan kritisk relativ fuktighet överskridasThe study aimed to assess the impact of varying accuracy in material parameters and calculation models on the moisture redistribution in hollow-core slabs. Previous studies emphasized the need for well-defined material properties and carefully executed calculations as crucial factors to accurately estimate future moisture levels in a structure. Furthermore, calculations of this kind demand substan

This Letter presents results from a combination of searches for Higgs boson pair production using 126-140 fb^{-1} of proton-proton collision data at sqrt[s]=13 TeV recorded with the ATLAS detector. At 95% confidence level (CL), the upper limit on the production rate is 2.9 times the standard model (SM) prediction, with an expected limit of 2.4 assuming no Higgs boson pair production. Constraints o

In this Master's Thesis we study Semi-Riemannian Geometry. More speci cally, this is done by discussing some well-known classi cation theorems from Riemannian geometry and then showing some counter-examples to these in the semi-Riemannian setting. In particular, we brie y discuss the theorem by Hopf and Rinow, and give a counter-example to this in the semi-Riemannian setting. Moreover, we stud

The aim of the study is to gain knowledge about the transition to living with formal home care for cohabiting partners. Data consist of 14 interviews with partners aged 64–85, most with extensive experience of home care. Grounded in a life course perspective, the study identified the key factors in the process of becoming an ‘inadvertent care user’, and two modes for that transition: (1) adaptions

This article unpacks the politics of disinformation attribution as deterrence. Research and policy on disinformation deterrence commonly draw on frameworks inspired by cyber deterrence to address the ‘attribution problem’, thereby overlooking the political aspects underpinning attribution strategies in liberal democracies. Addressing this gap and bringing together disinformation studies and the fo

An extension of the feedline is often needed when an antenna is integrated with the roof glass of a car. How much the extension affects the antenna performance depends on the type of antenna and feedline used. This paper studies the effects of coplanar waveguide feedline extension on the performance of a circularly-polarized square slot antenna. Simulation results show a general decrease in the an