Sökresultat

A search is performed for a long-lived particle decaying into a final state that includes a pair of muons of opposite-sign electric charge, using proton-proton collision data collected at s=13 TeV by the ATLAS detector at the Large Hadron Collider corresponding to an integrated luminosity of 32.9 fb-1. No significant excess over the Standard Model expectation is observed. Limits at 95% confidence

BACKGROUND: In patients with AD, CSF Aβ42 is reduced while Aβ40 remains unchanged. It has been suggested that altered CSF Aβ42 is due to aggregation of this peptide into insoluble plaques, resulting in less soluble Aβ42 available for secretion to the CSF. However, the relations between soluble and insoluble Aβ42 and Aβ40 in the brain and the concentrations of these Aβ peptides in CSF are not well

A search for heavy neutral Higgs bosons is performed using the LHC Run 2 data, corresponding to an integrated luminosity of 139 fb-1 of proton-proton collisions at s=13 TeV recorded with the ATLAS detector. The search for heavy resonances is performed over the mass range 0.2-2.5 TeV for the τ+τ-decay with at least one τ-lepton decaying into final states with hadrons. The data are in good agreement

A search for heavy neutral Higgs bosons produced in association with one or two b-quarks and decaying to b-quark pairs is presented using 27.8 fb-1 of s=13 TeV proton-proton collision data recorded by the ATLAS detector at the Large Hadron Collider during 2015 and 2016. No evidence of a signal is found. Upper limits on the heavy neutral Higgs boson production cross section times its branching rati

BACKGROUND: Prior to COVID-19, >90% of caregivers of people with brain health challenges (dementia, mental ill health, intellectual disability) experienced high levels of distress, burden, loneliness and social isolation. The COVID-19 pandemic has significantly increased these impacts, particularly since these caregivers are often older and physically vulnerable themselves. The aim of this cross-s

BACKGROUND: To examine associations between the APOE-ε2 and APOE-ε4 alleles and core Alzheimer's disease (AD) pathological hallmarks as measured by amyloid-β (Aβ) and tau PET in older individuals without dementia. METHOD: We analyzed data from 462 ADNI participants without dementia who underwent Aβ ([18 F]florbetapir or [18 F]florbetaben) and tau ([18 F]flortaucipir) PET, structural MRI and cognit

The inclusive top quark pair (tt¯) production cross-section σtt¯ has been measured in proton–proton collisions at s=13TeV, using 36.1 fb- 1 of data collected in 2015–2016 by the ATLAS experiment at the LHC. Using events with an opposite-charge eμ pair and b-tagged jets, the cross-section is measured to be: σtt¯=826.4±3.6(stat)±11.5(syst)±15.7(lumi)±1.9(beam)pb,where the uncertainties reflect the l

COVID-19 is characterized by a dysregulated and excessive inflammatory response and, in severe cases, acute respiratory distress syndrome. We have recently demonstrated a previously unknown high-affinity interaction between the SARS-CoV-2 spike (S) protein and bacterial lipopolysaccharide (LPS), leading to the boosting of inflammation. Here we present a mouse inflammation model employing the coadm

The inclusive J/ψ meson production in Pb–Pb collisions at a center-of-mass energy per nucleon–nucleon collision of sNN=5.02 TeV at midrapidity (|y|<0.9) is reported by the ALICE Collaboration. The measurements are performed in the dielectron decay channel, as a function of event centrality and J/ψ transverse momentum pT, down to pT=0. The J/ψ mean transverse momentum 〈pT〉 and rAA ratio, defined as

The Swedish gender-inclusive pronoun hen can be used generically (referring to anyone), or specifically (referring to non-binary gender identities). Three studies tested evaluations and use of hen, and individual-level predictors. In Study 1 (N = 2145), specific hen was slightly favoured over generic hen. In Study 2 (N = 297), hen was more negatively evaluated than binary pronouns, and generic hen

A search for supersymmetry through the pair production of electroweakinos with mass splittings near the electroweak scale and decaying via on-shell W and Z bosons is presented for a three-lepton final state. The analyzed proton-proton collision data taken at a center-of-mass energy of s=13 TeV were collected between 2015 and 2018 by the ATLAS experiment at the Large Hadron Collider, corresponding

Different signal frequencies from body tissues, muscles fat etc affects the EMG signals. The signal frequencies from body organ can considered as noise which affects the output and hence for better signal output noised should be minimised. Traditional EMG machines supports analogue filtering while residual noises carried by signal channels. For good and better signal aggregation and useful data ga

Nedstängningar har liten smittskyddseffekt och stora ekonomiska och sociala kostnader. Pandemilagen står inte på stabil vetenskaplig grund utan är ett oroväckande tecken på vad som rimligen bör diagnostiseras som pandemipopulism, skriver Fredrik NG Andersson och Lars Jonung vid Ekonomihögskolan i Lund.

Students' understanding of forces in circular motion is often incomplete. The problems are not limited to confusions about centripetal acceleration and centrifugal forces. This paper considers possible effects of different interventions by a teacher who has discovered the many types of free-body diagrams drawn by students for circular motion in a vertical plane. Students' free-body diagrams often

I report on the opening ceremony of the International Year of Light and Light-based Technologies 2015 (IYL2015), which took place at the UNESCO headquarters in Paris, France, on 19-20 January 2015. Over the two days, more than 1000 participants from all over the world learned more about the fundamental properties of light and advanced photonics applications, the history of optics and its applicati

Det finns i princip två vägar för att öka den sociala och dämpa smittspridningen: antingen en strategi byggd på tvång eller att ansvarstagande medborgare av fri vilja anpassar sitt beteende. Frihet under ansvar har visat sig fungera bra, skriver nationalekonomerna Fredrik NG Andersson och Lars Jonung.

Purpose: The purpose of this article is to offer new insights into crisis communication in service ecosystems. The authors present a framework to conceptually categorize service crises and then analyze key aspects of crisis communication among different stakeholders in a service ecosystem. Design/methodology/approach: Building on crisis communication and service ecosystems research, we propose a f