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The preparation of ultra-thin PtSn-alloyed layers by molecular beam epitaxy was studied using low-energy electron microscopy (LEEM) and micro-diffraction (μ-LEED). Deposition at a sample temperature of 435 °C initially results in the formation of a Pt3Sn/Pt(111) layer showing a (2 × 2) reconstruction. With continued Sn deposition, a Pt2Sn/Pt(111) layer develops, showing a (3×3)R30° reconstruction.
BACKGROUND AND AIM[|]The incidence of skin cancer has risen sharply over the past 30 years - coinciding with the rapidly increasing tattoo trend. In Sweden, 20% of the population is tattooed. The link between tattoos and skin cancer needs to be investigated, due to the presence of carcinogenic chemicals in tattoo ink, and the lack of epidemiological studies of the association. We aimed to investig
Dopaminergic neurons in the ventral midbrain are critical for regulating movement, cognition, and emotion. Ventral midbrain organoids can be used to model both development and diseases of the dopaminergic system, especially Parkinson’s disease. Here, we summarize recent advances and remaining challenges in developing such three-dimensional organoids from human pluripotent stem cells. We outline ho
Aberrant protein aggregation into amyloid fibrils is often catalyzed by interfaces. Therefore, it is important to characterize the surface activity of chaperone proteins having the ability to suppress amyloid formation. The air–water interface is of large practical significance in experimental setups used to study aggregation kinetics in vitro, but in addition, the binding of chaperones to hydroph
In the pursuit of CO₂-neutral renewable energy solutions, biofuels have emerged as one of the key strategies. However, biodiesel production generates a surplus of crude glycerol (GL), creating a need for efficient valorization pathways. The conversion of GL into value-added chemicals represents a sustainable approach to address this issue. Metal nanoclusters (NCats) embedded within metal-organic f
Layered transition metal dichalcogenides (TMDs) are model systems to investigate the interplay between superconductivity and the charge density wave (CDW) order. Here, we use muon spin rotation and relaxation (μ+SR) to probe the superconducting ground state of polycrystalline 2H-TaS2, which hosts a CDW transition at 76 K and superconductivity below 1 K. The μ+SR measurements, conducted down to 0.2
Aim Habitual physical activity (PA) affects metabolism and homeostasis in various tissues and organs. However, detailed knowledge of associations between PA and cardiovascular disease (CVD) risk markers is limited. We sought to identify associations between accelerometer-assessed PA classes and 183 proteomic and 154 metabolomic CVD-related biomarkers. Method We utilized cross-sectional data from t
Objective: To evaluate the effects of excluding fatty tissue in QSM of human knee cartilage. Materials and methods: Gradient echo images from 18 knee-healthy volunteers were acquired, from which chemical shift corrected field perturbation maps were calculated. Based on these, QSM maps were reconstructed using morphology enabled dipole inversion and one of three masking alternatives: (1) excluding
Correlated electron physics is intrinsically a multiscale problem, since high-energy electronic states screen the interactions between the correlated electrons close to the Fermi level, thereby reducing the magnitude of the interaction strength and dramatically shortening its range. Thus the handling of screening is an essential ingredient in the first-principles modeling of correlated electron sy
By combining ab initio downfolding with cluster dynamical mean-field theory, we study the degree of correlations in monolayer, bilayer, and bulk breathing-mode kagome van der Waals materials Nb3(F, Cl, Br, I)8. Our new material-specific many-body model library shows that in low-temperature bulk structures the Coulomb correlation strength steadily increases from I to Br, Cl, and F, allowing us to i
Transposable elements (TEs) are mobile genetic sequences comprising around 50% of human DNA. TEs shape gene regulatory networks in development, pluripotency and inflammation, and are implicated in a number of neurological disorders. Therefore, TEs are tightly controlled by epigenetic regulators which form a complex repressive network throughout different stages of development. However, while the r
Denna uppsats analyserar Europeiska kommissionens förslag till en förord-ning om tvångslicenser i krissituationer. (COM(2023) 224) ur ett rättsligt och rättspolitiskt perspektiv. Förslaget syftar till att införa ett unionsomfattande system för tvångslicenser avsett att säkerställa tillgången till krisrelevanta pro-dukter, särskilt läkemedel, i situationer där nationella åtgärder bedöms vara otillrThis thesis examines the European Commission’s proposal for a regulation on compulsory licensing in crisis situations (COM(2023) 224) from a legal and legal-policy perspective. The proposal seeks to introduce a Union-wide sys-tem for compulsory licensing intended to ensure access to crisis-relevant products, particularly medicinal products, in situations where national measures are considered insu
Objective: There is a well-established association of oral manifestations in the non-infectious chronic diarrhoeal conditions namely, Morbus Crohn, ulcerative colitis, and coeliac disease. Such a connection may exist also for the remaining non-infectious chronic diarrhoeal conditions, that is irritable bowel syndrome (IBS) and microscopic colitis (MC). Materials and methods: A systematic search wa
In March of 2025, the Swedish Supreme Administrative Court decided to request a preliminary ruling in a case regarding repayment of Swedish withholding tax on dividends. The non-resident company claimed that they were not obligated to calculate their results according to Swedish rules, whereas the Swedish tax authority claimed that not doing so would make it impossible to determine whether the non
BACKGROUND AND OBJECTIVE: The treatment landscape for metastatic hormone-sensitive prostate cancer (mHSPC) is evolving rapidly. Real-world data (RWD) are essential to understand actual treatment use and outcomes. This study aimed to describe treatment trajectories and clinical outcomes in a large, multicenter RWD cohort under the PIONEER project. METHODS: Eight European and US databases (2016-2020
Diffraction gratings are among the most fundamental optical elements. They are essential in ultrafast optics for manipulating the spectral phase of coherent ultrashort light pulses in grating stretchers, compressors, and pulse shapers. In this work, we have exploited an effect associated with diffraction from a single grating, which can produce large amounts of spatially dependent GDD. Leveraging
Denna uppsats analyserar förhållandet mellan enskilda och allmänna intressen enligt plan- och bygglagen, samt hur detta förhåller sig till Regeringsformen och Europakonventionen, samt om det finns skäl för ett starkare skydd för enskildas intressen. Enligt svensk rätt har kommuner planmonopol och i vissa fall detaljplanekrav för användningen av mark- och vattenområden inom kommunens geografiska omThis essay analyses the balance between private and public interest in matters relating to the Planning and building act of 2010 according to which there has to be a fair balance of interests. This essay also analyses how the previous relates to the European convention and the Instrument of Government and if there is a need for a stronger protection of private interests. According to the Planning
Photocatalysis has emerged as a promising technology for environmental remediation and sustainable energy production. This chapter provides a brief overview of the main definitions and recent advancements in photocatalysis using metal nanoparticles supported on metal oxides. The chapter also explores the photocatalytic mechanisms, highlighting the role of metal nanoparticles in providing alternati
