Sökresultat

Filtyp

Din sökning på "*" gav 529814 sökträffar

Photoinduced charge transfer renormalization in NiO

Photodoped states in strongly correlated charge-Transfer insulators are characterized by d-d and d-p interactions and the resulting intertwined dynamics of charge excitations and local multiplets. Here, we use femtosecond x-ray absorption spectroscopy in combination with dynamical mean-field theory to disentangle these contributions in NiO. Upon resonant optical excitation across the charge-Transf

Influence of Scanning Strategy on Residual Stresses in Laser-Based Powder Bed Fusion Manufactured Alloy 718 : Modeling and Experiments

In additive manufacturing, the presence of residual stresses in produced parts is a well-recognized phenomenon. These residual stresses not only elevate the risk of crack formation but also impose limitations on in-service performance. Moreover, it can distort printed parts if released, or in the worst case even cause a build to fail due to collision with the powder scraper. This study introduces

Traffic Safety Footprint in Sustainability Practices and Reporting—Exploring the Views of Companies

Road traffic accidents cause nearly 1.3 million deaths and around 50 million injuries each year globally. Most organisations generate travel and transport, and influence thereby traffic safety. In Sweden, 47 percent of fatal accidents in road traffic are work-related, and 36 percent are linked to a procured transport service. Effective approaches to managing traffic safety in organisations have no

Loop Dynamics and Enzyme Catalysis in Protein Tyrosine Phosphatases

Protein tyrosine phosphatases (PTPs) play an important role in cellular signaling and have been implicated in human cancers, diabetes, and obesity. Despite shared catalytic mechanisms and transition states for the chemical steps of catalysis, catalytic rates within the PTP family vary over several orders of magnitude. These rate differences have been implied to arise from differing conformational

From Funding to Financing: Complementary Pathways, Refugee Finance and the Emergence of the Refugee Entrepreneur

As part of the implementation of the Comprehensive Refugee Response Framework and the Global Compact on Refugees we are witnessing the promotion of refugee responses aimed at creating an enabling environment for sustainable investments. This marks a paradigmatic shift “from funding to financing” which sees the role of financial markets becoming central to the way in which refugee responses are man

Energy-resolved fast-neutron radiography using an event-mode neutron imaging detector

Energy-resolved fast-neutron radiography is a powerful non-destructive technique that can be used to remotely measure the quantity and distribution of elements and isotopes in a sample. This is done by comparing the energy-dependent neutron transmission of a sample with the known cross-sections of individual isotopes. The reconstruction of the composition is possible due to the unique features (e.

Competing or complementary? : Socio-technical imaginaries of a bio-based construction sector

The construction sector needs to transition toward using bio-based building materials in order to reduce its negative environmental impact. However, it is unclear how exactly such a bio-based future will look like, with different stakeholders in different geographical contexts having different visions of the sector’s future. Based on an extensive collection of expert interviews with stakeholders f

The Interplay Between Visual Traits and Forest in Bumblebee Communities Across Sweden

Understanding how ecological communities assemble in relation to natural and human-induced environmental changes is critical, particularly for communities of pollinators that deliver essential ecosystem services. Despite widespread attention to interactions between functional traits and community responses to environmental changes, the importance of sensory traits has received little attention. To

Pollination Across the Diel Cycle : A Global Meta-Analysis

The daily transition between day and night, known as the diel cycle, is characterised by significant shifts in environmental conditions and biological activity, both of which can affect crucial ecosystem functions like pollination. Despite over six decades of research into whether pollination varies between day and night, consensus remains elusive. We compiled the evidence of diel pollination from

Utility of Simultaneous Left Atrial Strain–Volume Relationship During Passive Leg Lift to Identify Elevated Left Ventricular Filling Pressure—A Proof-of-Concept Study

Background: The assessment of left ventricular (LV) filling pressure in heart failure (HF) poses a diagnostic challenge, as HF patients may have normal LV filling pressures at rest but often display elevated LV filling pressures during exercise. Rapid preload increase during passive leg lift (PLL) may unmask HF in such challenging scenarios. We explored the dynamic interplay between simultaneous l

Topological Superconductivity in Heavily Doped Single-Layer Graphene

The existence of superconductivity (SC) appears to be established in both twisted and nontwisted graphene multilayers. However, whether their building block, single-layer graphene (SLG), can also host SC remains an open question. Earlier theoretical works predicted that SLG could become a chiral d-wave superconductor driven by electronic interactions when doped to its van Hove singularity, but que

Divide and Surrender: Exploiting Variable Division Instruction Timing in HQC Key Recovery Attacks

We uncover a critical side-channel vulnerability in the Hamming Quasi-Cyclic (HQC) round 4 optimized implementation arising due to the use of the modulo operator. In some cases, compilers optimize uses of the modulo operator with compiletime known divisors into constant-time Barrett reductions. However, this optimization is not guaranteed: for example, when a modulo operation is used in a loop the

The 10th yearly volume of JPOR is complete

The first issue of Journal for Person-Oriented Research (JPOR) was published in 2015, representing the first international journal specifically focused on person-oriented research. With this issue, the JPOR completes its tenth yearly volume. The status of JPOR as a truly international journal is reflected in the number of published articles from different countries. The number of submissions to JP

Development and psychometric evaluation of an instrument measuring ambulance nurses’ adherence and attitudes to acute chest pain guidelines

Background: Effective prehospital care for acute chest pain critically relies on ambulance nurses’ adherence to clinical guidelines. However, current adherence is inadequate, with no instruments available to improve the situation. Therefore, this study aimed to develop and psychometrically evaluate an instrument measuring ambulance nurses’ adherence to and attitudes towards acute chest pain guidel

Diet-Induced Obesity Modulates Close-Packing of Triacylglycerols in Lipid Droplets of Adipose Tissue

Adipose-derived lipid droplets (LDs) are rich in triacylglycerols (TAGs), which regulate essential cellular processes, such as energy storage. Although TAG accumulation and LD expansion in adipocytes occur during obesity, how LDs dynamically package TAGs in response to excessive nutrients remains elusive. Here, we found that LD lipidomes display a remarkable increase in TAG acyl chain saturation u

An Evaluation of the Psychometric Properties of the Short Form of the Speech, Spatial and Qualities of Hearing Scale in Swedish : Online Versus Paper-and-Pen

PURPOSE: The purpose of this study was to examine the psychometric properties of the Swedish short form of the Speech, Spatial and Qualities of Hearing Scale (SSQ12) and investigate whether the paper-and-pen and online formats could be used interchangeably. METHOD: Individuals with and without hearing problems were invited to participate in this study. The participants (N = 125) were randomized in

Data-driven modelling of hydraulic-head time series : results and lessons learned from the 2022 Groundwater Time Series Modelling Challenge

This paper presents the results of the 2022 Groundwater Time Series Modelling Challenge, where 15 teams from different institutes applied various data-driven models to simulate hydraulic-head time series at four monitoring wells. Three of the wells were located in Europe and one was located in the USA in different hydrogeological settings in temperate, continental, or subarctic climates. Participa