Sökresultat

Introduction: Neurofilament light chain (NfL) is a promising blood biomarker to detect neurodegeneration in Alzheimer's disease (AD) and other brain disorders. However, there are limited reports of how longitudinal NfL relates to imaging biomarkers. We herein investigated the relationship between blood NfL and brain metabolism in AD. Methods: Voxelwise regression models tested the cross-sectional

Controlling antibiotic resistance is a global concern. The One Health initiative has provided a strategy to deal with this problem efficiently within a country. However, due to the global nature of the problem it is paramount not only to focus on specific countries, but to establish ways to avoid the development of antibiotic resistance in different geographical regions. In this letter, we propose

Purpose: To describe a new form of childhood-onset rhegmatogenous retinal detachment (RRD) in autosomal recessive high myopia associated with mutations in LRPAP1. Design: Retrospective cohort study. Participants: A total of 12 children (24 eyes) with recessive LRPAP1 mutations and associated high myopia. Methods: Serial ophthalmological examination and retinal imaging during 4.6±1.9 (mean ± standa

Total scattering and pair distribution function (PDF) analysis has created new insights that traditional powder diffraction methods have been unable to achieve in understanding the local structures of materials exhibiting disorder or complex nanostructures. Care must be taken in such analyses as subtle and discrete features in the PDF can easily be artefacts generated in the measurement process, w

Electric road systems (ERS) are technologies that allow to charge electric vehicles (EVs) while they are driving. A large scale implementation of ERS would allow to significantly reduce the installed battery capacity on board the vehicles, which consequently reduces their weight and cost. Due to geographical, practical and economic constraints the ERS is not expected to cover the full extension of

Dietary components in early life play a role in both microbiota and intestinal immune system maturation in mammalian species. Adipokines, as endogenously produced hormones from breast milk, may have an impact on this process. The aim of the present study was to establish the influence of leptin and adiponectin supplementation during suckling on the intraepithelial lymphocyte composition, intestina

OBJECTIVES:To report the initial experience of an international group of investigators in identifying mutations in the BRCA1 breast and ovarian cancer susceptibility gene, to assess the spectrum of such mutations in samples from patients with different family histories of cancer, and to determine the frequency of recurrent mutations.DESIGN:Nine laboratories in North America and the United Kingdom

This paper shows how the Computer Revolution of the 1980s shifted the economic trajectories of U.S. cities. Examining the emergence of new occupational titles in official census classifications, we document a sharp reversal in the skill content of new jobs. While technological change was biased towards routine skills throughout the 1970s, new job titles mainly appeared in occupations and industrie

Industrial renewal in the 21st century: evidence from US cities. Regional Studies. Where and why do new industries emerge? Using revisions of official industrial classifications, this paper documents the appearance of new industries in the US economy between 2000 and 2010 stemming directly from technological advances. Examining differences in new industry creation across cities, this paper shows t

A vast literature documents a positive relationship between patents and companies stock market performance. Nevertheless, evidence on the influence of patents on companies’ debt capacity remains sparse. In this article, we examine the relationship between companies’ patent portfolios and their credit rating, providing relevant, albeit indirect, evidence on patents as a debt funding mechanism. Usin

We study the rise of the so-called “gig economy” through the lens of Uber and its drivers in the United Kingdom. Using administrative data from Uber and a new representative survey of London drivers, we explore their backgrounds, earnings, and subjective well-being. We find that the vast majority of Uber drivers are male immigrants, primarily drawn from the bottom half of the London income distrib

Aim: Vegetation structure is a key determinant of animal diversity and species distributions. The introduction of Light Detection and Ranging (LiDAR) has enabled the collection of massive amounts of point cloud data for quantifying habitat structure at fine resolution. Here, we review the current use of LiDAR‐derived vegetation metrics in diversity and distribution research of birds, a key group f

Biogenic volatile organic compounds (BVOCs) can be released from soils to the atmosphere through microbial decomposition of plant residues or soil organic carbon, root emission, evaporation of litter-stored BVOCs, and other physical processes. Soils can also act as a sink of BVOCs through biotic and abiotic uptake. Currently, the source and sink capabilities of soils have not been explicitly accou

This study focuses on quantitative long-term effects of Supplemental Instruction (SI) in terms of graduation and dropout rates. One of the main aims of SI is to introduce students to effective study strategies and techniques. If SI is introduced at an early stage for new students in higher education, it should therefore be expected that this action will promote timely graduation. This has also beeThis study focuses on quantitative long-term effects of SupplementalInstruction (SI) in terms of graduation and dropout rates. One of the main aimsof SI is to introduce students to effective study strategies and techniques. If SIis introduced at an early stage for new students in higher education, it shouldtherefore be expected that this action will promote timely graduation. This hasalso been ind

A field study on current structure and circulation characteristics in Lake Vendyurskoe, a small, shallow, icecovered lake in Karelia, Russia, is presented. The current velocity magnitudes were generally found to be small. The most pronounced currents had an oscillating character, with velocity amplitudes on the order of millimeters per second. The oscillation period, obtained from spectral density