Luleå University of Technology

Evaluation on the cooling performance of the green façade system under different microclimates in a tropical area

This study conducted a one-year experiment of a green façade system under various microclimates in the tropical zone. The aim is to reveal the thermal effects and heat energy exchange from the green façade to the wall and the ambient air. Days with sunny, cloudy, and rainy weathe...

Mine Tailings as Supplementary Cementitious Materials: Properties, Performance, Mechanochemical Activation, and Challenges

The environmental impacts associated with Portland-cement production have driven decades of research into sustainable supplementary cementitious materials (SCMs). An emerging alternative, mine tailings, has been gaining attention lately due to its large availability, environmenta...

Species-dependent effects of tool geometry and machining parameters on surface roughness during longitudinal up-milling of Mongolian Scots pine and white oak

Previous studies on wood milling have mainly examined individual species or restricted machining conditions, leaving uncertain whether responses to tool geometry and cutting parameters are transferable across anatomically contrasting woods. This study aimed to distinguish common...

Meeting lifestyle recommendations among cancer survivors – a cross-sectional descriptive analysis from the Swedish CArdioPulmonary BioImage study (SCAPIS)

PURPOSE: This study aimed to describe lifestyle patterns in relation to recommendations -including physical activity, diet, smoking, alcohol consumption, and sleep quality-among Swedish cancer survivors, stratified by sex and age. METHOD: A descriptive cross-sectional study was p...

The Effect of Pre-oxidation on the Hydrogen Reduction of Magnetite Ores at 973 K: Role of Particle Size and Gangue Chemistry

This study systematically investigates the effects of controlled pre-oxidation on hydrogen-based reduction of three industrial magnetite ores, distinguished by their gangue chemistries (CaO, negligible gangue, and MgO), and examines two particle size fractions. Pre-oxidation beha...

Rupture and growth of holes in the melt pool during laser keyhole welding of thin sheets

Abstract This study investigates the formation and growth of holes during laser keyhole welding of 100 μm thin 316 L stainless-steel sheets in overlap joints, represented by bead-on-plate welding of 200 μm thick foils. Using high-speed imaging, keyhole instabilities, promoted by...

Perpetual propagation of singularities for evolutionary Hamilton–Jacobi equations

Abstract This paper studies viscosity solutions S ( t , x ) of the Hamilton–Jacobi equation $$ \partial S/\partial t+H(x,\nabla S)=0,\qquad (t,x)\in (0,\infty )\times {\mathbb {R}}^n. $$ ∂ S / ∂ t + H ( x , ∇ S ) = 0 , ( t , x ) ∈ ( 0 , ∞ ) × R n . The singular set $$\Sigma (S)$$...

Elucidation of the Hydrogen Evolution Reaction on a Photochemical Molecular Device

Abstract The direct conversion of solar energy to produce useful chemical products such as molecular hydrogen is one of the ultimate goals of photocatalysis. Photochemical molecular devices enable such a process cost-efficiently while offering additional benefits like repairabili...

Influence of Fe2O3 addition on the phase equilibrium for CaO-SiO2-TiO2 system at 1300 °C in air

Optimizing the Selective Crystallization and Phase Separation (SCPS) process is essential for improving the resource utilization of titanium-bearing blast furnace slag. However, the influence of Fe 2 O 3 addition on the phase equilibria of the CaO-SiO 2 -TiO 2 system remains insu...

Unidirectional carbon fibre reinforced polyetherimide: Pilot-scale wet powder impregnation and critical composite properties

High-performance thermoplastic composites are increasingly favoured over traditional thermosets due to their superior toughness, faster processing without complex curing processes, lower health risks, and potential recyclability. Among thermoplastics, amorphous polyetherimide (PE...

Quantum Encryption Resilience Score (QERS): A System-Level Evaluation Framework

The transition to post-quantum cryptography (PQC) presents significant challenges for modern computing environments due to increased computational overhead, communication latency, and implementation complexity. Existing evaluation methods typically focus on isolated cryptographic...

Trends and challenges in authorship analysis: a review of ML, DL, and LLM approaches

Abstract Authorship analysis plays an important role in diverse domains, including forensic linguistics, academia, cybersecurity, and digital content authentication. This paper presents a systematic literature review on two key sub-tasks of authorship analysis; Authorship Attribu...

Sensitivity of NOX formation to nitrogen release and char surface area: An estimation approach for CFD modelling of pulverized coal combustion

To effectively mitigate NO X emissions in pulverized coal combustion, Computational Fluid Dynamics (CFD) is frequently employed as a predictive tool. Because fuel-bound nitrogen is the primary source of NO X in these applications, modelling largely relies on coal characterization...

Professional legitimacy in Swedish wildlife management: frontline bureaucrats in a gendered governance landscape

Swedish wildlife management is characterized by multi-level governance, stakeholder conflict, and strong cultural ties to hunting. In this contested arena, frontline wildlife officers play a central role in mediating between state authority and local interests, making professiona...

Fluid and metal provenance of the Kiskamavaara Cu-Co deposit, northern Norrbotten, Sweden

Abstract Kiskamavaara is a shear zone-hosted cobaltian pyrite and chalcopyrite deposit in Northern Norrbotten, Sweden. Although previously classified as an Iron Oxide Copper-Gold (IOCG) deposit, the dominance of pyrite is atypical, suggesting either an unusual IOCG variant or a d...

Study of Supernova Neutrinos at ESSnuSB

In this paper, we have studied the sensitivity of the ESSnuSB far detector to supernova neutrinos. ESSnuSB is a proposed long-baseline neutrino experiment in Sweden, which will use a 538 kt water Cherenkov detector to probe the leptonic phase δCP by studying the second oscillatio...

Petrophysical attributes of the Seixo Amarelo-Gonçalo Li-bearing aplite-pegmatites (Guarda-Belmonte area, central Portugal)

Lithium-bearing pegmatites of the Seixo Amarelo-Gonçalo area are hosted within twomica granites of the Guarda-Belmonte area in central Portugal. The pegmatites, often concealed beneath cover material, occur at sizes difficult to detect via airborne geophysical methods but may be...

A Conceptual Framework of Deterioration Factors for Sustainable Selection of Feasible Railway Track Solutions

Escalating track deterioration poses a significant challenge for infrastructure managers seeking to balance increasing capacity demands with long-term sustainability objectives. Although traffic loading is the primary driver of deterioration, existing deterioration models conside...

The impact of financial shocks on the continued use of clean cooking technologies in Sub-Saharan Africa: evidence from Nigeria

Clean cooking represents an important pathway through which households in Sub-Saharan Africa can contribute to environmental sustainability and improve health outcomes. While previous studies have primarily examined the determinants of initial adoption of clean-cooking technologi...

Numerical investigation of repurposing oil storage caverns for hydrogen storage using lined rock cavern (LRC) technology

The growing demand for large-scale geological hydrogen storage has driven the exploration of resource-efficient methods for repurposing existing underground infrastructure. This study assesses the technical feasibility of converting underground oil storage caverns into lined rock...