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The exchange-correlation potential formalism previously introduced and applied to the one-dimensional Hubbard model has been extended to spin systems and applied to the case of the one-dimensional antiferromagnetic spin-12 Heisenberg model. Within the spin exchange-correlation potential formulation, a sum rule for spin systems is derived. The exchange-correlation potential for the Heisenberg model
Objective: This study was undertaken to develop and characterize a multiplex immunoassay for detection of autoantibodies against peptides derived from proteins known to play a role in development of arthritis and that are also expressed in joints. Methods: We selected peptides from the human counterpart of proteins expressed in the joints, based on mouse models that showed these to be targeted by
We present the first systematic comparison of the charged-particle pseudorapidity densities for three widely different collision systems, pp, p–Pb, and Pb–Pb, at the top energy of the Large Hadron Collider (sNN=5.02TeV) measured over a wide pseudorapidity range (−3.5
INTRODUCTION: Hip and knee osteoarthritis (OA) are increasingly common with a significant impact on individuals and society. Non-pharmacological treatments are considered essential to reduce pain and improve function and quality of life. EULAR recommendations for the non-pharmacological core management of hip and knee OA were published in 2013. Given the large number of subsequent studies, an upda
Background: Antibody-based immunoassays have enabled quantification of very low concentrations of phosphorylated tau (p-tau) protein forms in cerebrospinal fluid (CSF), aiding in the diagnosis of AD. Mass spectrometry enables absolute quantification of multiple p-tau variants within a single run. The goal of this study was to compare the performance of mass spectrometry assessments of p-tau181, p-
Background. National registries that capture patients with chronic kidney disease (CKD) across all stages are scarce. We present here the Swedish Renal Registry (SRR), a nationwide prospective register covering the whole spectrum of CKD. Methods. Created in 1991, SRR enrolls CKD patients referred to adult nephrologist care (non-dialysis CKD [ND-CKD], kidney transplantation, maintenance dialysis),
The recognition of amine groups by ninhydrin, along with a simple mathematical algorithm, showed that di- and tripeptides derived from dietary protein are the major end products of protein digestion entering the blood postprandially. There are thousands of oligopeptides appearing in the gut during protein digestion. However, the presented study on a pig model clearly shows that peptides longer tha
We study the problems of computing the Voronoi diagram and a triangulation of a set of n2 points with O(logn)-bit coordinates in the Euclidean plane in a substantially sublinear in n number of rounds in the congested clique model with n nodes. First, we observe that if the points are uniformly at random distributed in a unit square then their Voronoi diagram within the square can be computed in O
Purpose: The sugar industry is always pressured to be suitable and enhance its operational effectiveness. Digital Twin (DT) has the potential to transform this industry. However, the lack of industry-specific Key Performance Indicator (KPI) frameworks makes it challenging to implement them. This study provides a hierarchical KPI model for DT adoption in the sugar sector, interconnecting the United
This study explores how ideas of variety were created and practised among women and men of different social strata in Norway and Sweden before the big changes in the second half of the nineteenth century. Three researchers with in-depth knowledge of clothing during that period look at their material through questions they developed based on current clothing and sustainability discourse. The materi
Polyethylene glycol (PEG) is commonly used in the conservation of wooden artifacts, but its presence adversely affects the accuracy of radiocarbon dating. It is therefore critical to have robust methods for the removal of PEG from heritage materials. This paper presents the results of an experiment designed to test a protocol for the removal of low molecular-weight PEG-400 from conserved wood. We
A majority of all infectious diseases manifest some climate-sensitivity. However, many of those sensitivities are not well understood as meteorological drivers of infectious diseases co-occur with other drivers exhibiting complex non-linear influences and feedback. This makes it hard to dissect their individual contributions. Here we apply a novel deep learning Explainable AI (XAI) compartment mod
Probabilistic models of imposed loads require adjustments to reflect current knowledge and experience. To do so, relevant data about their spatial and temporal variability must be collected. Structural Health Monitoring allows to estimate loads acting on bridges by measuring the relevant strains or deflections. Adapting this approach to buildings is not straightforward due to the increased complex
In this thesis we consider different tests for unit roots in the presence of structural change. We present the theory that lies behind unit roots, what we mean by structural change and try to detect the instances that “breaks” occur in the data. When performing a unit root test, when there is a structural change the results are biased toward accepting a unit root. Therefore, special care must be t
